US Pat. No. 9,587,217

APPARATUS FOR PRODUCING SACCHARIDE SOLUTION THAT USES BIOMASS AS FEEDSTOCK

TORAY INDUSTRIES, INC., ...

1. An apparatus for producing saccharide solution that uses biomass as a feedstock comprising:
a hydrothermal decomposition apparatus that brings a biomass feedstock including at least cellulose, hemicellulose, and lignin
into countercurrent contact with pressurized hot water and performs a high temperature and high pressure treatment in a temperature
range of 180° C. to 240° C. so as to produce a biomass treated liquid containing a pressurized hot water soluble component
of the biomass feedstock;

a cooling means that is provided downstream of the hydrothermal decomposition apparatus and cools the biomass treated liquid
which has been discharged from the hydrothermal decomposition apparatus;

an enzymatic saccharification tank that is provided downstream of the cooling means and saccharifies the cooled treated liquid
with an enzyme so as to produce a saccharide solution;

a saccharide solution purification means that is provided downstream of the enzymatic saccharification tank and removes a
water-slightly soluble substance from the saccharide solution, the water-slightly soluble substance being a substance that
is contained in the pressurized hot water soluble component, and solidified or colloidal due to the cooling;

a dilution tank that is disposed downstream of the saccharide solution purification means and adds water thereto so as to
dilute the saccharide solution from which the water-slightly soluble substance has been removed;

a water separation unit that is provided with a reverse osmosis (RO) membrane and removes water from the diluted saccharide
solution so as to obtain concentrated saccharide solution;

a first measurement unit that measures both of a turbidity and a light absorbance of the saccharide solution from which the
water-slightly soluble substance has been removed, wherein

the saccharide solution purification means includes:
a saccharide solution purification tank that is provided downstream of the enzymatic saccharification tank to receive and
retain the saccharide solution taken from the enzymatic saccharification tank;

a first circulation line that connects between a bottom portion of the saccharide solution purification tank and an upper
portion of the saccharide solution purification tank to circulate the saccharide solution;

a second circulation line that connects between the bottom portion of the saccharide solution purification tank and the upper
portion of the saccharide solution purification tank to circulate the saccharide solution;

a solid-liquid separation apparatus that is interposed in the first circulation line and removes the water-slightly soluble
substance contained in the saccharide solution circulating in the first circulation line;

a foreign substance removing unit that is interposed in the second circulation line and has a microfiltration (MF) membrane
by which the water-slightly soluble substance circulating in the second circulation line is further removed and through which
the saccharide solution from which the remaining water-slightly soluble substance is thus removed is passed.

US Pat. No. 9,309,869

SOLAR THERMAL ENERGY GENERATING PLANT AND METHOD FOR OBTAINING ENERGY BY MEANS OF A SOLAR THERMAL ENERGY GENERATING PLANT

MITSUBISHI HITACHI POWER ...

1. A solar thermal energy generating plant, comprising:
a first solar array, using water as a heat transfer medium;
a water separator, arranged downstream of the first solar array;
a high-pressure turbine;
a first superheater which overheats the steam leaving the water separator arranged between the water separator and the high-pressure
turbine, wherein the first superheater is a steam-steam heat exchanger; and

an additional solar array which operates the steam-steam heat exchanger, wherein steam generated in the additional solar array
has a higher temperature than steam generated in the first solar array, so steam leaving the first solar array can be overheated
by the steam generated by the additional solar array.

US Pat. No. 9,422,519

BIOMASS HYDROTHERMAL DECOMPOSITION SYSTEM AND SACCHARIDE-SOLUTION PRODUCTION METHOD USING BIOMASS MATERIAL

MITSUBISHI HITACHI POWER ...

1. A biomass hydrothermal decomposition system comprising:
a biomass feeding unit that feeds a biomass material containing cellulose, hemicellulose, and lignin under a normal pressure
to put it under an increased pressure;

a hydrothermal decomposition unit that hydrothermally decomposes the biomass material by pressurized hot water and dissolves
a lignin component and a hemicellulose component in the pressurized hot water, the hydrothermal decomposition unit including
a hot-water effluent outlet from which a hot-water effluent containing the lignin component and the hemicellulose component
is discharged;

a biomass solid discharging unit that discharges a biomass solid from the hydrothermal decomposition unit;
a slurrying vessel comprising:
a biomass solid inlet that communicates with the biomass solid discharging unit and introduces the biomass solid;
a water inlet that introduces water; and
an outlet that discharges a slurried biomass solid composed of the introduced water and the introduced biomass solid;
a first saccharification tank that is provided downstream of the slurrying vessel and saccharifies the slurried biomass solid
with a first enzyme so as to produce a first saccharide solution;

a hot-water effluent feed line that communicates with the hot-water effluent outlet of the hydrothermal decomposition unit;
and

a second saccharification tank that saccharifies the hot-water effluent with a second enzyme via the hot-water effluent feed
line so as to produce a second saccharide solution,

wherein the biomass solid inlet is provided at an upper portion of the slurrying vessel, and the outlet is provided at a lower
portion of the slurrying vessel, so that the biomass hydrothermal decomposition system is configured to provide a liquid seal
between a gas-liquid interface of the slurried biomass solid in the slurrying vessel and a gas-liquid interface of hot water
of the hydrothermal decomposition unit, and

wherein the biomass hydrothermal decomposition system further comprises:
a first solid-liquid separation device that is provided downstream of the first saccharification tank and separates a first
solid residual liquid containing lignin from the first saccharide solution; and

a second solid-liquid separation device that is provided downstream of the second saccharification tank and separates a second
solid residual liquid containing lignin from the second saccharide solution

wherein the biomass hydrothermal decomposition system further comprises a pH measuring device provided downstream of the slurrying
vessel, the pH measuring device measures pH in the slurried biomass solid, and

wherein the biomass hydrothermal decomposition system is configured to, on a basis of the measured pH, control at least one
of the following:

(i) a feed amount of the pressurized hot water;
(ii) a feed amount of the biomass material;
(iii) a conveying rate of the biomass material by a screw means;
(iv) a liquid level of the gas-liquid interface of the hydrothermal decomposition unit; and
(v) a discharge amount of the hot-water effluent.

US Pat. No. 9,422,489

PRESSURE EQUALIZING STRUCTURE AND PRESSURE EQUALIZING METHOD FOR GASIFICATION FURNACE APPARATUS

MITSUBISHI HITACHI POWER ...

1. A pressure equalizing method for a gasification furnace apparatus including a gasification furnace for gasifying a carbon-containing
fuel, a pressure vessel housing the gasification furnace, a pressure holding section filled with a pressurizing gas and provided
between the gasification furnace and the pressure vessel, a pressure equalizing part which is connected to the gasification
furnace in the pressure vessel, which communicates between the inside of the gasification furnace and the inside of the pressure
holding section, and which equalizes the pressure inside the gasification furnace and the pressure inside the pressure holding
section, and at least one heat exchanger installed along a passing direction of an in-furnace gas flowing inside the gasification
furnace,
the pressure equalizing method comprising:
setting a temperature of the in-furnace gas, which has passed through the heat exchanger located on the most downstream side,
to be higher than a peripheral wall boiler water temperature; and

equalizing the pressure inside the gasification furnace and the pressure inside the pressure holding section by communicating
the inside of the gasification furnace with the inside of the pressure holding section in a region where the in-furnace gas
temperature inside the gasification furnace is higher than the temperature inside the pressure holding section.

US Pat. No. 9,366,287

TILTING PAD BEARING DEVICE

MITSUBISHI HITACHI POWER ...

1. A tilting-pad bearing device, comprising:
a plurality of bearing pads disposed around a rotation shaft so as to support the rotation shaft rotatably;
a support member interposed between the plurality of bearing pads and a bearing housing supporting the plurality of bearing
pads, the support member supporting each of the plurality of bearing pads pivotably; and

an oil-supply mechanism configured to supply a lubricant oil to at least one oil groove formed on a bearing surface of at
least one of the plurality of bearing pads,

wherein the at least one oil groove is disposed inside and outside a contact area of the bearing surface which is in contact
with an outer circumferential surface of the rotation shaft when the rotation shaft is stopped.

US Pat. No. 9,433,874

SPRAY DRYING APPARATUS FOR DEHYDRATED FILTRATE FROM DESULFURIZATION WASTE WATER, AND AIR POLLUTION CONTROL SYSTEM

MITSUBISHI HITACHI POWER ...

1. A spray drying apparatus, comprising:
a body portion, a top portion and a bottom portion;
a gas inlet, for introducing a flue gas, being provided in the body portion;
a spray nozzle for spraying waste water into the flue gas in order to evaporate and dry the waste water; and
an outlet duct connected to the bottom portion of the spray drying apparatus,
wherein the bottom portion of the spray drying apparatus is connected to a longitudinal intermediate portion of the outlet
duct such that the flue gas discharged from the bottom portion is provided to a midstream of main flue gas flowing in the
outlet duct.

US Pat. No. 9,051,839

SUPERSONIC TURBINE MOVING BLADE AND AXIAL-FLOW TURBINE

Mitsubishi Hitachi Power ...

1. A turbine moving blade, which expands a flow in a flow passage formed between neighboring turbine moving blades with a
high pressure area as an upstream side and a low pressure area as a downstream side, an airfoil of the turbine moving blade
is configured such that an exit angle of the blade is oriented in an axial direction of a turbine with respect to an entrance
angle of the blade; and when a blade surface curvature with a curvature center in an inner direction of the blade is defined
as positive, a blade pressure surface curvature is positive or zero from a leading edge end to a trailing edge end.

US Pat. No. 9,366,435

IGNITION TORCH AND PRESSURIZED GASIFICATION FURNACE INCLUDING THE SAME

MITSUBISHI HITACHI POWER ...

1. A pressurized gasification furnace including an ignition torch extending from an outside of a gasification furnace to an
inside of the gasification furnace which is pressurized during operation, the ignition torch comprising:
a first end positioned outside of the gasification furnace;
a second end positioned inside of the gasification furnace;
an ignition device positioned outside of the gasification furnace; and
an opening/closing valve located outside of the gasification furnace and disposed downstream in a fuel flow direction relative
to the ignition device,

wherein the entire ignition device is disposed upstream of the opening/closing valve in the fuel flow direction,
wherein a fuel supply port and a combustion air supply port are provided at the first end of the ignition torch for receiving
fuel and combustion air and feeding the fuel and the combustion air to the second end of the ignition torch positioned in
the inside of the gasification furnace in order to make flames at the second end.

US Pat. No. 9,284,856

GAS TURBINE COMBINED CYCLE POWER PLANT WITH DISTILLATION UNIT TO DISTILL A LIGHT OIL FRACTION

MITSUBISHI HITACHI POWER ...

1. A gas turbine combined cycle power plant, comprising:
a gas turbine which generates electricity by being fueled with crude oil or heavy oil;
a multiple-stage exhaust heat recovery portion, which generates electricity by using exhaust gas of the gas turbine as at
least a partial heat source of the multiple-stage exhaust heat recovery portion; and

a distillation unit,
wherein the multiple-stage exhaust heat recovery portion comprises a low pressure steam generator, a low pressure steam turbine,
a medium pressure steam generator, and a medium pressure steam turbine,

wherein the distillation unit distills a light oil fraction from crude oil or heavy oil, with the interior of the distillation
unit kept in an environment which lowers a boiling point of crude oil or heavy oil,

wherein the distillation unit is provided with heaters configured to heat crude oil or heavy oil, wherein the heaters are
provided with a low pressure steam extraction pipe through which low pressure steam generated in the multiple-stage exhaust
heat recovery portion flows and a medium pressure steam extraction pipe through which medium pressure steam generated in the
multiple-stage exhaust heat recovery portion flows,

wherein the low pressure steam extraction pipe is branched from and connected to a low pressure steam pipe which supplies
the low pressure steam from the low pressure steam generator to the low pressure steam turbine, and

wherein the medium pressure steam extraction pipe is branched from and connected to a medium pressure steam pipe which supplies
the medium pressure steam from the medium pressure steam generator to the medium pressure steam turbine.

US Pat. No. 9,409,117

AIR POLLUTION CONTROL SYSTEM, AIR POLLUTION CONTROL METHOD, SPRAY DRYING DEVICE OF DEWATERING FILTRATION FLUID FROM DESULFURIZATION DISCHARGED WATER, AND METHOD THEREOF

MITSUBISHI HITACHI POWER ...

1. An air pollution control system for a boiler that burns fuel comprising:
an air heater that is provided downstream of the boiler and recovers heat of the flue gas from the boiler;
a first precipitator that is provided downstream of the air heater and reduces dust in the flue gas after heat recovery;
a desulfurizer that is provided downstream of the first precipitator and reduces sulfur oxides in the flue gas after dust
reduction by an absorbent;

a dewaterer that is connected to the desulfurizer via a waste water line and reduces gypsum from desulfurization discharged
water discharged from the desulfurizer;

a spray drying device that is connected to the dewaterer via a dewatering line and includes a spray nozzle for spraying dewatering
filtration fluid from the dewaterer;

a flue-gas introducing line that is branched from between the boiler and the desulfurizer and introduces a part of the flue
gas into the spray drying device; and

a water supplying line that is connected to the dewatering line and supplies water to the spray nozzle,
wherein the dewatering line and the spray nozzle are cleaned by stopping the supply of the dewatering filtration fluid and
supplying the water to the spray nozzle.

US Pat. No. 9,206,705

SEALING DEVICE AND GAS TURBINE HAVING THE SAME

MITSUBISHI HITACHI POWER ...

1. A sealing device which seals between an outside space between an outer side in the radial direction of an external diffuser
which has a tubular shape and forms an exhaust channel through which combustion gas rotating a rotor of a gas turbine passes
in the inner side in the radial direction and an outside member which is disposed outside the external diffuser with an interval
between them in the radial direction, and the exhaust channel by an end of the external diffuser, the sealing device comprising:
a first seal plate group and a second seal plate group which include a plurality of seal plates, wherein the plurality of
seal plates, which extend to the outer side in the radial direction from the end of the tubular external diffuser and reach
the outside member, are laminated in contact with each other; and

a spacer is sandwiched between the first seal plate group and the second seal plate group, and maintains an interval between
the first seal plate group and the second seal plate group in an axial direction in which a rotational axis of the rotor extends,

wherein the spacer includes an outside spacer which maintains an interval between an outer side portion in the radial direction
of the first seal plate group and an outer side portion in the radial direction of the second seal plate group, and an inside
spacer which maintains an interval between an inner side portion in the radial direction of the first seal plate group and
an inner side portion in the radial direction of the second seal plate group, and

wherein a seal air hole which penetrates from the outer side in the radial direction toward the inner side in the radial direction
is formed in the outside spacer.

US Pat. No. 9,115,899

GAS TURBINE COMBUSTOR AND METHOD FOR OPERATING SAME

Mitsubishi Hitachi Power ...

1. A gas turbine combustor comprising:
a combustion chamber for burning a fuel and air in a mixed condition; and
a burner, provided upstream in a gas flow direction of the combustor, for supplying the fuel and the air to inside of the
combustion chamber and thus stabilizing a flame;

wherein the burner includes
a first swirler in which both of a plurality of gas injection holes for injecting the fuel, and a plurality of air injection
holes for injecting air are arranged at alternate positions in a circumferential direction of the swirler, and

a second swirler circumferentially surrounding an outer periphery of the first swirler, the second swirler being fitted only
with a plurality of gas injection holes to inject the fuel, and

wherein the plurality of gas injection holes and the plurality of air injection holes are independent flow channels that supply
the fuel and the separately to the combustion chamber.

US Pat. No. 9,249,706

METHOD FOR REGENERATING EXHAUST GAS TREATMENT CATALYST

MITSUBISHI HITACHI POWER ...

1. A method for regenerating an exhaust gas treatment catalyst, in which a coating layer containing at least one selected
from the group consisting of alkali metal carbonates and alkaline earth metal carbonates is provided on a surface of a de-NOx
catalyst, and VOSO4 is deposited on the coating layer, the method comprising removing only the coating layer of the de-NOx catalyst with an acid.

US Pat. No. 9,440,161

SPRAY DRYING APPARATUS FOR DEHYDRATED FILTRATE FROM DESULFURIZATION WASTE WATER, AND AIR POLLUTION CONTROL SYSTEM

MITSUBISHI HITACHI POWER ...

1. A spray drying apparatus for waste water,
the spray drying apparatus comprising:
a gas inlet that is provided in the vicinity of a top portion of a body of the spray drying apparatus and introduces a flue
gas for drying a spray;

a flow-adjusting plate provided in the body of the spray drying apparatus;
a spray nozzle that sprays waste water as the spray into the flue gas having been flow-adjusted; and
a joining unit that connects a bottom of the body of the spray drying apparatus to a main flue gas duct so as to discharge
spray-dried solids to the main flue gas duct along with the flue gas that has contributed to the drying of the spray,

wherein the joining unit is connected to an intermediate portion of the main flue gas duct such that the discharged spray-dried
solids and the flue gas are provided to a midstream of main flue gas flowing in the main flue gas duct.

US Pat. No. 9,435,536

GAS TURBINE COMBUSTOR EQUIPPED WITH HEAT-TRANSFER DEVICE

Mitsubishi Hitachi Power ...

1. A gas turbine combustor comprising:
a combustor liner;
an air transfer casing disposed on an outer circumference side of the combustor liner, the combustor liner and the air transfer
casing defining an annular passage therebetween adapted to allow a heat-transfer medium to flow therethrough; and

a plurality of vortex generating devices disposed on an inside surface of the air transfer casing, the vortex generating devices
each generating longitudinal vortices each having a rotational axis extending in a flow direction of the heat-transfer medium;

wherein the plurality of vortex generating devices are arranged in a paired manner, with each pair of vortex generating devices
generating the vortices so that the vortices have rotational directions opposed to each other; and

wherein each of a plurality of impingement jet cooling holes is formed in the air transfer casing downstream of the vortex
generating devices with respect to the flow of the heat-transfer medium, is disposed between paired devices of the vortex
generating devices corresponding to the impingement jet cooling hole, and is positioned so that a direction of a jet flow
of the heat transfer medium flowing from the impingement jet cooling hole does not oppose rotation of the longitudinal vortices
formed by the paired vortex generating devices.

US Pat. No. 9,056,273

WET TYPE EXHAUST GAS DESULFURIZATION APPARATUS

MITSUBISHI HITACHI POWER ...

1. A wet type flue gas desulfurization apparatus comprising:
an absorption tower configured to desulfurize flue gas by causing the flue gas to come into gas-liquid contact with an absorbent;
nozzles configured to spray the absorbent into the absorption tower;
a header pipe configured to feed the absorbent to the nozzles;
a circulation mechanism configured to feed the absorbent accumulated inside the absorption tower through the nozzles of the
header pipe toward an upstream of a flow of the absorbent;

a bypass pipe configured to feed the absorbent through the nozzles of the header pipe from a downstream of the nozzles into
the absorption tower in a direction of flow of the absorbent;

a tank arranged at an intermediate location on the bypass pipe in the direction of flow of the absorbent;
a perforated plate being arranged inside the tank and having multiple transmission holes; and
an access port that opens on a side surface of the tank to communicate between an inside and an outside of the tank;
wherein the access port is arranged above the perforated plate, and
wherein the absorbent that freely falls inside the tank and passes through the transmission holes of the perforated plate
while scales or impurities contained in the absorbent are collected above the perforated plate.

US Pat. No. 9,421,525

EXHAUST GAS TREATMENT CATALYST

MITSUBISHI HITACHI POWER ...

1. An exhaust gas treatment catalyst for denitrifying an exhaust gas including sulfur oxides and vanadium discharged from
a heavy oil combustion boiler, comprising:
a support comprising titanium and silica wherein a content of silica is from 10% by mass to 20% by mass, and
an active component supported in the support and comprising one selected from the group consisting of vanadium and tungsten.

US Pat. No. 9,395,085

COMMUNICATING STRUCTURE BETWEEN ADJACENT COMBUSTORS AND TURBINE PORTION AND GAS TURBINE

MITSUBISHI HITACHI POWER ...

1. A communicating structure between a plurality of combustors and a turbine portion,
wherein the plurality of combustors generate combustion gas by combusting compressed air supplied from a compressor and fuel
supplied from fuel nozzles, which are mixed inside a plurality of pipe pieces each of which are provided for each of the combustors
and which are disposed next to each other around a rotating shaft,

a turbine portion generates a rotational driving force by making the combustion gas sequentially pass through a turbine stage
formed of a plurality of turbine stator vanes including first-stage turbine stator vanes and turbine rotor blades disposed
around the rotating shaft,

wherein at least some of first-stage turbine stator vanes closest to the pipe pieces of the combustors among the turbine stator
vanes are disposed downstream of a gap between a sidewall of a first pipe piece of the plurality of pipe pieces and a sidewall
of a second pipe piece of the plurality of pipe pieces which is adjacent to the first pipe piece, wherein the distance from
leading edges of the first-stage turbine stator vanes disposed downstream of the gap between the sidewalls of the first and
second pipe pieces to end portions of the sidewalls closer to the turbine portion is equal to or less than a spacing between
an internal surface of the sidewall of the first pipe piece and an internal surface of the sidewall of the second pipe piece
in order to prevent the combustion gas from flowing in a gap between the leading edges of the first-stage turbine stator vanes
disposed downstream of the gap and the end portions of the side walls closer to the turbine portion, and

wherein the internal surfaces of the sidewalls have shapes that are smoothly continuous with combustor-side external surfaces
of the first-stage turbine stator vanes disposed downstream of the sidewalls such that the extending directions of the internal
surfaces of the sidewalls being the same as the extending directions of the combustor-side external surfaces, the combustor-side
external surfaces of the first-stage turbine stator vanes being surfaces which are closest to the internal surfaces of the
sidewalls.

US Pat. No. 9,371,737

GAS TURBINE

MITSUBISHI HITACHI POWER ...

1. A gas turbine including a rotor rotated around a rotation axis by a combustion gas, a bearing rotatably supporting a portion
of a downstream side of the rotor, and a bearing box covering an outer circumferential side of the bearing and supporting
the bearing, the gas turbine comprising:
a rotor main body provided in the rotor and extending in an axial direction parallel to the rotation axis around the rotation
axis;

a plurality of blade stages provided in the rotor and fixed to an outer circumference of the rotor main body and arranged
in the axial direction;

a cooling air main passage opened at a downstream end of the rotor main body and extending in the axial direction formed at
the rotor main body;

a cooling air pipe disposed at a downstream side of the rotor main body without contacting with the rotor main body and configured
to feed cooling air into the cooling air main passage of the rotor main body;

a downstream side seal retaining ring fixed to the bearing box and configured to cover a portion of the rotor main body at
a downstream side of the bearing;

a bearing downstream end shaft seal annularly disposed at the outside of the rotor main body in a radial direction and at
the downstream side of the bearing, and installed inside of the downstream side seal retaining ring in the radial direction;

a bearing-side downstream side shaft seal disposed at the downstream side of the bearing and the upstream side of the bearing
downstream end shaft seal, and installed inside of the downstream side seal retaining ring in the radial direction; and

a collecting flow passage member having a leaked air collecting flow passage that guides the cooling air, which reaches to
the bearing downstream end shaft seal from a clearance between the downstream end of the rotor main body and the cooling air
pipe via the outside of the rotor main body in the radial direction and is leaked from the bearing downstream end shaft seal
to the bearing side, into an exhaust flow passage through which the combustion gas passing through the blade stage flows,

wherein the downstream side seal retaining ring includes:
a first through-hole that is disposed at a position between the bearing downstream end shaft seal and the bearing-side downstream
side shaft seal in the axial direction, and that penetrates through the downstream side seal retaining ring from the inside
thereof in the radial direction to the outside thereof in the radial direction; and

a second through-hole that is disposed at a position between the farthest downstream side of the bearing-side downstream side
shaft seal and a downstream side of the bearing, and that penetrates through the downstream side seal retaining ring from
the inside thereof in the radial direction to the outside thereof in the radial direction, and

wherein a portion of the collecting flow passage member is connected to the first through-hole, and
a shaft seal air pipe that supplies a shaft seal air from a shaft seal air supply source to the inside of the downstream side
seal retaining ring in the radial direction is connected to the second through-hole.

US Pat. No. 9,192,920

EXHAUST GAS TREATMENT CATALYST AND METHOD FOR REGENERATING THE SAME

MITSUBISHI HITACHI POWER ...

1. A method for regenerating an exhaust gas treatment catalyst whose NOx removal performance is reduced by sulfur dioxides and vanadium included in an exhaust gas discharged from a heavy oil combustion
boiler,
the exhaust gas treatment catalyst comprising:
titanium and silica; and
an active component comprising one selected from the group consisting of vanadium and tungsten in a support having an Si content
of 10% by mass or more, and

the method comprising:
immersing the exhaust gas treatment catalyst in an alkali cleaning liquid at a concentration from 0.5 N to 2.0 N so as to
remove vanadium oxysulfate on the surface of the exhaust gas treatment catalyst, and

subjecting the catalyst to activation treatment with an acid aqueous solution after cleaning the exhaust gas treatment catalyst
with the alkali cleaning liquid.

US Pat. No. 9,186,753

BACK-SHIELDED WELDING METHOD AND WELDED STRUCTURE USING THE SAME

MITSUBISHI HITACHI POWER ...

1. A back-shielded welding method of performing welding is performed by forming a welding bead in such a manner that the welding
bead is formed to be melted into a back surface-side from a front surface-side of two welding base materials while supplying
an inert gas from the back surface-side thereof, the method comprising:
communicating the front surface-side and the back surface-side of two welding base materials with each other at a joint of
the abutted two welding base materials, at least one abutting edge portion having a notched portion in such a manner that
a slit-shaped gas supply opening is formed to extend along a forming direction of the welding bead, wherein the notched portion
is preformed in the at least one abutting edge portion, wherein the at least one abutting edge portion is to be abutted to
another abutting edge portion;

forming the gas supply opening with the notched portion by abutting the abutting edge portions of the welding base materials
against each other and temporarily fixing the abutting edge portions; and

forming the welding bead while supplying an inert gas via the gas supply opening, and blocking the gas supply opening by the
welding bead.

US Pat. No. 9,334,757

SINGLE-CASING STEAM TURBINE AND COMBINED CYCLE POWER PLANT OF SINGLE-SHAFT TYPE

MITSUBISHI HITACHI POWER ...

1. A single-casing steam turbine comprising:
blade rows including at least high-pressure blade rows and low-pressure blade rows;
a high-pressure chamber housing the high-pressure blade rows;
a low-pressure chamber housing the low-pressure blade rows;
an expansion joint connecting the high-pressure chamber and the low-pressure chamber to each other and sealing an interior
space of the high-pressure chamber and the low-pressure chamber;

a position-adjusting unit for adjusting a position of the high-pressure chamber in an axial direction of a rotor;
a detection unit for detecting a thermal extension difference between the rotor and the high-pressure chamber; and
a control unit for controlling the position-adjusting unit based on the thermal extension difference detected by the detection
unit,

wherein the detection unit includes a sensor for measuring a distance from the sensor to the rotor.

US Pat. No. 9,217,708

EQUIPMENT AND METHOD FOR DIAGNOSING SLIDING CONDITION OF ROTATING ELECTRICAL MACHINE

Mitsubishi Hitachi Power ...

1. Equipment for diagnosing a sliding condition of a rotating electrical machine, the equipment comprising:
a light source that emits light onto a sliding surface of a collecting brush relative to a surface of a rotating body of the
rotating electrical machine;

a light-receiving section that receives light reflected from the sliding surface; and
a determination section that processes a signal from the light-receiving section;
wherein the determination section is arranged to compare a specific wavelength component of the reflected light with a non-specific
wavelength component of the reflected light, the non-specific wavelength component being a wavelength component other than
the specific wavelength component, and to detect an increase in a difference between the compared wavelength components to
determine whether the sliding condition of the rotating electrical machine is abnormal.

US Pat. No. 9,169,866

TILTING PAD BEARING

Mitsubishi Hitachi Power ...

1. A tilting pad bearing, comprising:
a plurality of journal pads arranged in a circumferential direction of a rotating shaft so as to face an outer circumferential
surface of the rotating shaft; and

a bearing housing for carrying the plurality of journal pads via a plurality of pivots in a tiltable manner;
wherein lubricating oil is fed to a sliding surface of each of the journal pads via an oil-feeding hole formed in at least
one of the journal pads or via an oil-feed nozzle disposed between at least a pair of the journal pads adjacent to each other;
and

wherein the sliding surface of each of the journal pads includes a portion having a center of the pad in the axial direction
and so formed that an axial width of the portion gradually increases from an oil-feed start position to feed the lubricating
oil from the oil-feeding hole or the oil-feed nozzle onto the sliding surface as the axial width approaches the circumferential
downstream side of the rotating shaft.

US Pat. No. 9,429,043

GASIFICATION POWER GENERATION PLANT

MITSUBISHI HITACHI POWER ...

1. A gasification power generation plant comprising:
a gasifier that generates syngas by gasifying fuel, the gasifier including a communication channel that communicates water
to an interior of the gasifier to undergo heat exchange with the generated syngas;

gas purifying equipment connected to the gasifier so as to receive syngas generated by the gasifier and remove impurities
from the syngas;

a gas turbine connected to the gas purifying equipment, wherein the gas turbine is driven by the syngas purified by the gas
purifying equipment;

a heat exchanger connected to the gas turbine such that the heat exchanger heats water with gas exhausted from the gas turbine,
wherein a downstream side of the heat exchanger is connected to the communication channel so that at least a portion of the
heated water can be supplied to the communication channel;

a gas-liquid separator connected to the communication channel, the gas-liquid separator having a water region connected to
the communication channel and a gas region; and

a non-condensable pressurizing gas supplier connected to the gas region of the gas-liquid separator to pressurize an interior
of the gas-liquid separator, the non-condensable pressurizing gas supplier being capable of pressurizing water in the water
region of the gas-liquid separator to or above a saturated pressure of the heated water when the heated water is at a temperature
of about 250° C., wherein water in the water region of the gas-liquid separator is received by the communication channel,

wherein in a case where a warm-up of the gasifier is performed,
the non-condensable pressurizing gas supplier supplies non-condensable pressurizing gas to the gas region of the gas-liquid
separator,

the gas-liquid separator guides the water pressurized by the non-condensable pressurizing gas to the communication channel,
and

the heat exchanger supplies the water heated by the heat exchanger to the communication channel.

US Pat. No. 9,200,524

STEAM TURBINE ROTOR

Mitsubishi Hitachi Power ...

1. A steam turbine rotor, comprising:
a steam turbine low-pressure final stage long blade made of a precipitation hardening type martensitic stainless steel containing,
in mass, 0.1% or less of C, 0.1% or less of N, 9.0% to 14.0% inclusive of Cr, 9.0% to 14.0% inclusive of Ni, 0.5% to 2.5%
inclusive of Mo, 0.5% or less of Si, 1.0% or less of Mn, 0.25% to 1.75% inclusive of Ti, 0.25% to 1.75% inclusive of Al, and
the balance consisting of Fe and inevitable impurities, and

a disk containing, in mass, 0.10% to 0.35% of C, 0.50% or less of Si, 0.33% or less of Mn, 8.0% to 13.0% of Cr, 0.5% to 3.5%
of Ni, 1.5% to 4.0% of Mo, 0.05% to 0.35% of V, 0.02% to 0.30% in total of at least one kind of Nb and Ta, 0.02% to 0.15%
of N, and the balance consisting of Fe and inevitable impurities, wherein the disk is joined to a final stage section of the
stream turbine rotor made of a low-alloy steel.

US Pat. No. 9,468,862

SPRAY DRYING APPARATUS FOR DEHYDRATED FILTRATE FROM DESULFURIZATION WASTE WATER, AND AIR POLLUTION CONTROL SYSTEM

MITSUBISHI HITACHI POWER ...

1. A spray drying apparatus, comprising:
a body portion, a top portion and a bottom portion;
a gas inlet, for introducing a flue gas, being provided in the body portion;
a spray nozzle for spraying waste water into the flue gas in order to evaporate and dry the waste water; and
an outlet duct connected to the bottom portion of the spray drying apparatus,
wherein the bottom portion of the spray drying apparatus is connected to a longitudinal intermediate portion of the outlet
duct such that the flue gas discharged from the bottom portion is provided to a midstream of main flue gas flowing in the
outlet duct.

US Pat. No. 9,194,820

METHOD FOR MANUFACTURING A TURBINE ROTOR

MITSUBISHI HITACHI POWER ...

1. A method for manufacturing a turbine rotor, the method comprising the steps of:
forming a recessed groove on at least one of a first disk and a second disk adapted to a turbine rotor, each of the first
disk and the second disk having a body supportable for a rotor blade and a circular part protruding from the body toward an
axial direction, each of the circular parts of the first and second disks having a joint surface at a tip end of the circular
part in the axial direction, the joint surface having an abutment face and a groove part, the joint surfaces of the first
disk and the second disk being capable of contacting each other, the groove parts of the first disk and the second disk being
capable of forming an outer circumferential groove outside of the abutment faces in a radial direction, the recessed groove
being formed at a tip end side and an inner circumferential side on at least one of the first disk and the second disk so
as to extend along a circumferential direction of the circular part;

first-layer welding the abutment faces to each other through the outer circumferential groove so as to form a penetration
part;

imaging by x-ray radiation from outside of the penetration part in the radial direction of the circular part so as to form
an image on a photosensive film by x-ray radiation penetrating the penetration part after the first-layer welding step;

determining the presence or absence of incomplete penetration in the penetration part based on the image obtained in the step
of imaging;

second-layer welding the groove parts to each other around the penetration part when an absence of incomplete penetration
is determined in the determining step; and

repairing the penetration part when the presence of incomplete penetration is determined in the determining step.

US Pat. No. 9,377,192

COMBUSTOR

Mitsubishi Hitachi Power ...

7. A combustor comprising:
a mixing chamber forming member that forms a mixing chamber inside thereof;
a first mixing chamber defined in the mixing chamber, the first mixing chamber broadening toward a downstream side;
the mixing chamber forming member including air introduction holes formed in a plurality of rows in an axial direction, with
the air introduction holes being arranged plurally in a circumferential direction of the mixing chamber; and

the mixing chamber forming member including a fuel ejection hole, the fuel ejection hole being provided in a wall surface
which forms the air introduction hole; wherein

the air introduction holes are each disposed such that a central axis thereof does not intersect a burner central axis, and
the air introduction holes located in a most upstream row are more inclined toward the downstream side with respect to lines
that are perpendicular to the central axis of the burner than the air introduction holes located in a row other than the most
upstream row.

US Pat. No. 9,353,427

NI-BASED ALLOY, AND GAS TURBINE ROTOR BLADE AND STATOR BLADE EACH USING SAME

MITSUBISHI HITACHI POWER ...

1. A standard cast Ni-based alloy consisting essentially of Cr, Co, Al, Ti, Ta, W, Mo, Nb, C, B, and the balance being Ni
and unavoidable impurities, wherein content of the Ni-based alloy is 13.1% to 15.0% Cr, 10.1% to 15.0% Co, 2.3% to 3.3% Al,
4.55% to 6.0% Ti, 3.05% to 4.0% Ta, 4.35% to 4.9% W, 1.05% to 2.0% Mo, 0.05% to 0.5% Nb, less than 0.05% Zr, 0.05% to 0.2%
C, and 0.015% to 0.02% B, by mass.

US Pat. No. 9,140,142

MOUNTING/DISMOUNTING JIG FOR COMBUSTOR TAIL PIPE AND TAIL PIPE INSTALLATION METHOD

MITSUBISHI HITACHI POWER ...

1. A tail cylinder attaching and detaching fixture that attaches and detaches a tail cylinder to and from a casing, the tail
cylinder included in a combustor inserted into the casing so that a front end is connected to an inlet portion of a combustion
gas passageway, the tail cylinder attaching and detaching fixture comprising:
a guide portion of which the front end is disposed inside the casing and the front end and the base end are respectively supported
by the casing and which supports the tail cylinder so as to be movable in an axial direction of the combustor;

an advancing and retracting mechanism configured to advance and retract the tail cylinder in the axial direction; and
a support pin in a front end of the guide portion so as to be fitted to a concave portion provided inside the casing,
wherein the front end of the guide portion is supported in a manner such that the support pin is fitted to the concave portion.

US Pat. No. 9,388,978

METHODS AND SYSTEMS FOR CONTROLLING GAS TEMPERATURES

MITSUBISHI HITACHI POWER ...

1. A system for controlling the temperature of a heated flue gas stream at a downstream device within a desired operating
temperature range, the system comprising:
a multipart heat exchanger comprising:
a first heat exchanger section located in said flue gas stream said first heat exchanger section having a fluid inlet coupled
to a fluid feed line;

a second heat exchanger section connected in series with said first heat exchanger section in said flue gas stream, said second
heat exchanger section being located upstream of said first heat exchanger section in said flue gas stream;

an intermediate header having a first mixer fluid input, a second mixer fluid input, and a fluid outlet, said first mixer
fluid input being coupled to a fluid output of said first heat exchanger section, and said fluid outlet of said intermediate
header being coupled to a fluid inlet of said second heat exchanger section;

a fluid bypass line coupling said fluid feed line to said second mixer fluid input of said intermediate header, said fluid
bypass line extending outside of said flue gas stream and providing a fluid bypass allowing at least some fluid supplied by
said fluid feed line to fully bypass said first heat exchanger section; and

wherein the system further comprises:
a first temperature sensor in said flue gas stream in proximity of said intermediate header;
a first valve located in series with said fluid bypass line for controlling an amount of fluid flow through said fluid bypass
line; and

a control module coupled to said first temperature sensor and said first valve, being configured to control a position of
said first valve as a function of a temperature measured by said first temperature sensor.

US Pat. No. 9,233,437

FORMING BODY FOR SEALING AN OBJECT TO BE WELDED, MORE PARTICULARLY A PIPE

Mitsubishi Hitachi Power ...

1. A method for welding a steel pipe comprising:
introducing a forming body into an inner space of a steel pipe to be welded, wherein the forming body sealingly acts as a
gas barrier for the temporary internal sealing of a flow cross section of the steel pipe,

welding the steel pipe under protective gas, wherein the steel pipe is sealed by the forming body during welding;
after welding, introducing a liquid into contact with the inner space of the steel pipe; and
dissolving the forming body as a result of contact with the liquid,
wherein the forming body is composed of a biologically degradable material the main constituent of which is corn starch and/or
corn semolina and/or corn flakes and which has a water solubility of ?90% and which yields an ash content of 0.29% during
incineration according to DIN 51719 and a pH value of 6.6 when dissolved in fully demineralized water,

wherein the forming body, already in its initial state as produced, has a cylindrical shape and size that is adapted to the
inner space of the steel pipe to ensure a reliable sealing of the inner space of the steel pipe during welding and has an
edge region with a chamfer which is formed in the transitional region between an end face and a longitudinal side face of
the forming body and wherein the forming body is dimensionally stable, pressure-stable, and temperature-stable so that its
shape does not change when pressure and an increased temperature during welding are applied, and

when the forming body is introduced into the inner space of the steel pipe and is positioned at the desired location inside
the steel pipe by means of an elongated, cylindrical introduction tool which presses onto an end face of the forming body
when the forming body is pressed into the inner space of the steel pipe by means of the introduction tool, wherein the forming
body is in contact with its outer circumferential face extensively against an inner circumferential face of the steel pipe.

US Pat. No. 9,359,953

COMBINED CYCLE POWER PLANT WITH SOLAR ASSISTED COOLING OF COMPRESSOR INLET AIR

Mitsubishi Hitachi Power ...

1. A combined cycle power plant with solar assisted cooling of compressor inlet air having a compressor that pressurizes the
compressor inlet air into a combustion air, a combustor that mixes and burns the combustion air and a gas turbine fuel to
generate a high-temperature combustion gas, a gas turbine that drives the compressor by using the combustion gas, an exhaust
heat recovery steam generator that obtains steam from thermal energy of the combustion gas exhausted from the gas turbine,
and a steam turbine that is driven by using the steam obtained by the exhaust heat recovery steam generator, the combined
cycle power plant with solar assisted cooling comprising:
a solar collector that uses thermal energy of sunlight to turn supplied water to warm water;
a heat accumulator that stores pressurized hot water derived from the solar collector and the exhaust heat recovery steam
generator;

a spray device that handles the pressurized hot water, which is stored in the heat accumulator, as spray water and sprays
the spray water into the compressor inlet air to be taken into the compressor;

a temperature sensor disposed in the heat accumulator to measure temperature of the pressurized hot water in the heat accumulator;
a pressure sensor disposed in the heat accumulator to measure pressure of the pressurized hot water;
a flow sensor disposed on an inlet side of the spray device to measure flow rate of the spray water;
a temperature sensor disposed on an inlet side of the heat accumulator to measure temperature of the pressurized hot water;
a water flow regulating valve for controlling flow rate of supplied water at an outlet of a first water supply pump;
a pressure controller acquiring a value measured by the pressure sensor, the pressure controller controlling the water flow
regulating valve;

a spray water flow regulating valve for controlling flow rate of the spray water at the inlet side of the spray device;
a flow controller acquiring a flow rate value measured by the flow sensor, the flow controller controlling the spray water
flow regulating valve;

a temperature regulating valve for controlling flow rate of the pressurized hot water from the exhaust heat recovery steam
generator; and

a warm water temperature controller acquiring values measured by the temperature sensor disposed in the heat accumulator and
the temperature sensor disposed on inlet side of the heat accumulator, the warm water temperature controller controlling the
temperature regulating valve.

US Pat. No. 9,327,236

WET TYPE FLUE-GAS DESULFURIZATION METHOD

Mitsubishi Hitachi Power ...

1. A wet type flue-gas desulfurization method for desulfurizing by using a wet type flue-gas desulfurization apparatus comprising:
an apparatus body side absorption tower which has an apparatus body side circulation tank in a lower portion thereof, the
apparatus body side circulation tank reserving absorbent slurry;

an apparatus body side absorbent spray nozzle which is placed inside the apparatus body side absorption tower to spray the
absorbent slurry;

an oxidation gas supply portion which supplies oxidation gas to the absorbent slurry reserved in the apparatus body side circulation
tank; and

a desulfurization apparatus body which includes the apparatus body side absorption tower, the apparatus body side absorbent
spray nozzle and the oxidation gas supply portion, and in which gas to be treated, containing sulfur compounds, is introduced
into the apparatus body side absorption tower and brought into gas-liquid contact with the absorbent slurry sprayed from the
apparatus body side absorbent spray nozzle, so that the sulfur compounds in the gas to be treated can be absorbed by the absorbent
slurry; wherein:

the gas to be treated contains mercury;
the desulfurization apparatus is provided with, on an upstream side of the desulfurization apparatus body in a flow direction
of the gas to be treated:

an upstream absorption tower which includes an upstream circulation tank reserving absorbent slurry;
an upstream absorbent spray nozzle which is placed inside the upstream absorption tower to spray the absorbent slurry; and
a make-up water supply unit which supplies make-up water into the upstream circulation tank,
the method comprising the acts of:
keeping a chloride ion concentration of the absorbent slurry in the upstream circulation tank not lower than 50,000 ppm by
a process in which the make-up water supply unit supplies make-up water into the upstream circulation tank;

collecting liquid by an upstream mist eliminator provided between the upstream absorbent spray nozzle and the desulfurization
apparatus body; and

returning the collected liquid obtained by the upstream mist eliminator to the upstream absorption tower.

US Pat. No. 9,046,469

ULTRASONIC TESTING METHOD

Mitsubishi Hitachi Power ...

1. An ultrasonic testing method, the method comprising the steps of:
causing a transverse ultrasonic wave to be incident on a test object that has acoustic anisotropy and is constituted by a
crystal structure, in a direction perpendicular to a surface of the test object; and

measuring a thickness of the test object on the basis of a velocity of the transverse ultrasonic wave propagating in the test
object and a time period for the propagation of the transverse ultrasonic wave, while using, as the time period for the propagation
of the transverse ultrasonic wave, a time period for propagation of a transverse wave component that propagates in the test
object for the shortest time period, among a plurality of transverse wave components that are obtained by dividing the transverse
ultrasonic wave and have polarizations in the different directions (vibration direction) due to the acoustic anisotropy.

US Pat. No. 9,482,159

POWER GENERATION SYSTEM AND OPERATING METHOD THEREOF

MITSUBISHI HITACHI POWER ...

1. A power generation system comprising:
a fuel cell;
a gas turbine including a combustor;
an exhausted oxidant line that supplies exhausted oxidant from the fuel cell to the combustor;
a fuel gas supply line that supplies fuel gas to the combustor;
an exhausted fuel gas supply line that directly supplies exhausted fuel gas from the fuel cell to the combustor;
a supply amount adjustment unit that adjust an amount of the fuel gas supplied from the fuel gas supply line to the combustor;
and

a control system including an information acquisition unit that acquires operational information, a calculation unit that
executes a calculation process using the information acquired by the information acquisition unit, and a fuel gas supply control
unit that controls the supply amount adjustment unit using a result operated by the calculation unit to control a flow rate
of the fuel gas supplied to the combustor of the gas turbine,

wherein the information acquisition unit acquires an output command of the gas turbine, an atmospheric temperature, a temperature
of the exhausted oxidant supplied to the gas turbine, and a temperature of the exhausted fuel gas supplied to the gas turbine,
and

the calculation unit calculates a heat input of the exhausted oxidant using at least the temperature of the exhausted oxidant,
calculates a heat input of the exhausted fuel gas by a calculation using at least the temperature of the exhausted fuel gas,
calculates using the output command and the atmospheric temperature to calculate a gas turbine heat input command, executes
a calculation by the gas turbine heat input command and the heat input of the exhausted oxidant to calculate a gas turbine
fuel heat input command, and executes a calculation by the gas turbine fuel heat input command and the heat input of the exhausted
fuel gas to calculate a supply amount of the fuel gas.

US Pat. No. 9,388,702

PRECIPITATION HARDENING MARTENSITIC STAINLESS STEEL, AND STEAM TURBINE LONG BLADE, STEAM TURBINE, AND POWER PLANT USING THE SAME

MITSUBISHI HITACHI POWER ...

1. A precipitation hardening martensitic stainless steel comprising, by mass, 0.1% or less of C; 0.1% or less of N; 9.0% or
more and 14.0% or less of Cr; 9.0% or more and 14.0% or less of Ni; 0.5% or more and 1.47% or less total of Mo with optional
W; 0.5% or less of Si; 1.0% or less of Mn; 0.25% or more and 1.75% or less of Ti; 0.25% or more and 1.75% or less of Al; 1.0%
or less of Co and the rest is Fe and inevitable impurities, and
a parameter A related to martensite transformation finish-temperature and a parameter B related to martensitic tissue stability
satisfying the following specific range:

(Cr+2.2Si+1.1Mo+0.6W+4.3Al+2.1Ti)?(Ni+31.2C+0.5Mn+27N+1.1Co)  A:
(125?4.0Cr?6.0Ni?3.0Mo+2.5Al?1.5W?3.5Mn?3.5Si?5.5Co?2.0Ti?221.5C?321.4N), and,  B:Specific range: 4.0?A?10.0 and 2.0?B?7.0.

US Pat. No. 9,366,441

BURNER, COMBUSTOR AND REMODELING METHOD FOR BURNER

Mitsubishi Hitachi Power ...

1. A burner comprising:
an air hole member with a plurality of air holes, said plurality of air holes including a plurality of first air holes and
a plurality of second air holes that are different from the plurality of first air holes, all of said plurality of air holes
being located in the air hole member at an upstream side of post-combustion gases which are generated in a combustion chamber;

at least one first cylindrical fueling nozzle for jetting a fuel from a plurality of injection ports provided on an outer
circumferential surface of the at least one first cylindrical fueling nozzle and which fuel jetted from said plurality of
injection ports is directed only towards inner wall surfaces of at least two adjacent ones of the plurality of first air holes;

a plurality of second fueling nozzles, each second fuel nozzle being provided in association with each one of the plurality
of second air holes that are different from the plurality of first air holes, each of the second fueling nozzles being formed
for jetting the fuel in a direction routed along a burner axis and only towards an associated one of the plurality of second
air holes that are different from the plurality of first air holes;

a fuel header for distributing the fuel to the at least one first cylindrical fueling nozzle and to each of the second fueling
nozzles; and

a fuel header storage unit that shrouds the fuel header, the at least one first cylindrical fueling nozzle and each of the
plurality of second fueling nozzles, the fuel header storage unit including an air inflow hole.

US Pat. No. 9,309,897

AXIAL-FLOW FLUID MACHINERY, AND VARIABLE VANE DRIVE DEVICE THEREOF

MITSUBISHI HITACHI POWER ...

1. A variable vane drive device of an axial-flow fluid machine with a rotor having a plurality of blades, a casing which rotatably
houses the rotor, and a plurality of variable vanes annularly arranged around the rotor on the inside of the casing, the variable
vane drive device of the axial-flow fluid machine comprising:
a movable ring disposed at an outer circumferential side of the casing and having an annular shape;
a plurality of ring support mechanisms which are disposed at intervals along a circumferential direction of the movable ring
and rotatably support the movable ring around a rotor axis of the rotor;

a rotary drive mechanism which rotates the movable ring around the rotor; and
a link mechanism which connects the movable ring to the variable vane such that an angle of the variable vane is varied by
rotation of the movable ring,

wherein each of the plurality of ring support mechanisms comprises:
an inner roller which is disposed at an inner circumferential side of the movable ring;
an outer roller which is disposed at an outer circumferential side of the movable ring, the movable ring being sandwiched
between the inner roller and the outer roller; and

a roller support base, which is connected to the casing, and having an assembly including both the inner roller and the outer
roller, and rotatably supports the inner roller and the outer roller around an axis parallel to the rotor in a state in which
the movable ring is sandwiched between the inner roller and the outer roller and maintains contact therebetween,

wherein the inner roller and the outer roller are disposed so as to be close to each other and along the circumferential direction
of the movable ring in a state in which the movable ring is sandwiched between the inner roller and the outer roller, and

wherein each of the plurality of ring support mechanisms has a center distance adjustment mechanism which adjusts a distance
between the axis of the inner roller and the axis of the outer roller.

US Pat. No. 9,252,762

PULSE GENERATION DEVICE AND PULSE GENERATION METHOD

MITSUBISHI HITACHI POWER ...

1. A pulse generation device comprising:
a PWM waveform outputting part which outputs a PWM waveform having a duty ratio in which one pulse is defined with a first
number of bits;

an inputting part which receives as an input a control signal that indicates a duty ratio defined with a second number of
bits larger than the first number of bits; and

a setting part which sets the PWM waveform to be output by the PWM waveform outputting part based on the control signal input
to the inputting part with one cycle being made up of a set comprised of a plurality of consecutive pulses according to the
second number of bits,

wherein the number of the plurality of pulses making up the set is 2n when a difference between the second number of bits and the first number of bits is n,

wherein the setting part performs setting so as to express, in the control signal indicated with the second number of bits,
higher-order bits corresponding to the first number of bits with the one pulse defined with the first number of bits and the
remaining bits with 2n-1 pulses (where n is the difference between the second number of bits and the first number of bits) and

wherein the setting part performs setting so as to express each of the remaining bits with twice as many pulses as pulses
expressing a bit of the next lower digit.

US Pat. No. 9,103,003

NICKEL-BASED SUPERALLOY AND GAS TURBINE BLADE USING THE SAME

Mitsubishi Hitachi Power ...

1. A casting that is a conventional casting formed of a Ni-based conventional casting superalloy comprising: 13.1 to 16.0
percent by mass of Cr, 1.0 to 6.8 percent by mass of Co, 3.0 to 3.4 percent by mass of Al, more than 5.0 to 5.6 percent by
mass of Ti, 2.0 to 4.4 percent by mass of Ta, 3.5 to 4.9 percent by mass of W, 0.1 to 0.9 percent by mass of Mo, 0.3 to 1.4
percent by mass of Nb, 0.05 to 0.20 percent by mass of C, and 0.014 to 0.02 percent by mass B, with the remainder being Ni
and inevitable impurities, the conventional casting containing equiaxis grains.

US Pat. No. 9,097,188

GAS TURBINE DEVICE

MITSUBISHI HITACHI POWER ...

11. A gas turbine device configured to burn in a combustor a fuel gas supplied from a fuel gas supplier, together with a compressed
air supplied from an air compressor, and to rotationally drive a gas turbine by a combustion gas generated at the burning,
wherein the fuel gas supplier includes a plurality of mixers, and is configured to produce a mixed gas by mixing three or
more types of gases in the mixers in ascending order of specific gravity or in descending order of specific gravity, and to
supply the mixed gas to the combustor as the fuel gas, and

wherein the fuel gas supplier is configured to include:
a hydrogen/oxygen sensor that detects a hydrogen concentration and an oxygen concentration in the mixed gas;
an emergency discharge valve provided in the fuel line; and
a controller that causes the emergency discharge valve to operate to discharge the mixed gas when the hydrogen concentration
and the oxygen concentration detected by the hydrogen/oxygen sensor become equal to or more than a set value; and

a remixer that performs remixing by agitating the mixed gas.

US Pat. No. 9,561,482

STATIC MIXER ASSEMBLY SUITABLE FOR USE WITH INJECTED GAS IN SCR AND/OR OTHER APPLICATIONS

MITSUBISHI HITACHI POWER ...

1. A mixer assembly, comprising:
a duct configured to pass flue gas in a first direction, said first direction being a downstream direction;
a plurality of rows of mixing plates in said duct, each row of mixing plates extending in a second direction in said duct,
mixing plates in said rows of mixing plates each having an upstream end and a downstream end and being supported at a location
between said upstream end and said downstream end, said second direction being perpendicular to said first direction, said
plurality of rows of mixing plates forming a set of consecutive rows of mixing plates, each consecutive row being at a different
location in a third direction, said third direction extending perpendicular to said first and second directions, a mixing
plate row boundary, extending parallel to the rows of mixing plates, occurring in the third direction between each pair of
adjacent rows of mixing plates in said set of consecutive rows of mixing plates, adjacent mixing plates in a first row of
mixing plates alternating in angle with respect to the second direction, a first mixing plate in said first row being adjacent
a first mixing plate in a second row of mixing plates in said plurality of rows of mixing plates and having a different angle
with respect to the second direction than the first mixing plate in the second row; and

a plurality of gas injection nozzles, positioned upstream of said rows of mixing plates, said nozzles being arranged in rows
which are aligned in said third direction with mixing plate row boundaries.

US Pat. No. 9,468,861

SPRAY DRYING APPARATUS FOR DEHYDRATED FILTRATE FROM DESULFURIZATION WASTE WATER, AND AIR POLLUTION CONTROL SYSTEM

MITSUBISHI HITACHI POWER ...

1. A spray drying apparatus for waste water,
the spray drying apparatus comprising:
a gas inlet that is provided in the vicinity of a top portion of a body of the spray drying apparatus and introduces a flue
gas for drying a spray;

a flow-adjusting plate provided in the body of the spray drying apparatus;
a spray nozzle that sprays waste water as the spray into the flue gas having been flow-adjusted; and
a joining unit that connects a bottom of the body of the spray drying apparatus to a main flue gas duct so as to discharge
spray-dried solids to the main flue gas duct along with the flue gas that has contributed to the drying of the spray,

wherein the joining unit is connected to an intermediate portion of the main flue gas duct such that the discharged spray-dried
solids and the flue gas are provided to a midstream of main flue gas flowing in the main flue gas duct.

US Pat. No. 9,283,520

EXHAUST GAS TREATMENT APPARATUS

Mitsubishi Hitachi Power ...

1. An exhaust gas NOx removal apparatus comprising:
a NOx removal reactor having a catalyst layer for removing nitrogen oxides in a combustion exhaust gas;
a duct located upstream of the NOx removal reactor, the duct having a stub-up point at which a flow of the exhaust gas changes
from a horizontal direction to a vertical direction in the duct;

a screen (13A) comprising a number of thin plates which are disposed in a plane parallel to each other to form vertical slits, a width
of the slits being smaller than an opening width of the catalyst layer, the screen (13A) being located in a horizontal portion of the duct at an inlet side of the stub-up point, and the screen (13A) being tilted at a predetermined angle relative to the cross-section of an exhaust gas flow path; and

a dust collecting/discharging portion (11) attached to the lower end of the screen (13A).

US Pat. No. 9,279,329

TRANSONIC BLADE

Mitsubishi Hitachi Power ...

1. A transonic blade used in a flow field through which an overall or partial flow passes at a transonic speed or higher,
wherein the transonic blade is formed such that:
a cross-sectional surface at each of spanwise positions of the blade is shifted parallel to a line connecting a leading edge
with a trailing edge of the blade;

a stacking line is shifted toward an upstream side of working fluid, the stacking line connecting together gravity center
positions of blade cross-sectional surfaces at respective spanwise positions in a range from a hub cross-sectional surface
joined to a rotating shaft or an outer circumferential side casing of a rotating machine to a tip cross-sectional surface
lying at a position most remote from the hub cross-sectional surface in a spanwise direction; and

a maximum thickness position of the cross-sectional surface of the blade at each of the spanwise positions are shifted toward
a trailing edge side of the blade in a range from the hub cross-sectional surface to the tip cross-sectional surface.

US Pat. No. 9,249,682

STEAM TURBINE POWER PLANT

Mitsubishi Hitachi Power ...

1. A steam turbine power plant, comprising:
a heat source equipment that heats a low-temperature flow by applying a heat medium and thus generates a high-temperature
flow;

a steam generator that generates steam using the high-temperature flow generated by the heat source equipment;
a steam turbine driven by the steam generated by the steam generator;
an electric generator that converts rotational motive power of the steam turbine into electric power;
a controller that controls a plant load; and
a steam turbine starting control device that predicts a value of a startup constraint due to a change in physical quantities
of the steam in the steam turbine, and controls the controller according to the predicted value;

wherein the steam turbine starting control device includes:
at least one fundamental startup constraint prediction device calculating from a control input variable of the controller
a prediction period of fundamental startup constraint data about a fundamental startup constraint which is short in response
time with respect to the change in the physical quantities of the steam;

at least one reference control input variables calculating device calculating such a reference control input variable of the
controller as the value predicted and calculated by the fundamental startup constraint prediction device will not exceed a
corresponding limit value;

at least one other startup constraint prediction device calculating a corresponding prediction period of data about one of
other startup constraints longer than the fundamental startup constraint in response time, from the prediction period of reference
control input variables data;

at least one other control input variables calculating device calculating such an other control input variable of the controller
as the value predicted and calculated by the corresponding other startup constraint prediction device will not exceed a corresponding
limit value; and

a control signal output device that outputs a command value to the controller according to a value selected from the reference
control input variable and the other control input variable.

US Pat. No. 9,188,393

MULTISTAGE PRESSURE CONDENSER AND STEAM TURBINE PLANT EQUIPPED WITH THE SAME

MITSUBISHI HITACHI POWER ...

11. A multistage pressure condenser comprising:
a low-pressure chamber for operating at low pressure;
a high-pressure chamber for operating at high pressure;
a pressure bulkhead that has a plurality of holes and that divides the low-pressure chamber in a vertical direction into an
upper section and a lower section;

a cooling-tube bank that is provided in the upper section of the low-pressure chamber and is configured to perform heat exchange
with low-pressure steam guided to the low-pressure chamber by introducing coolant therein so as to condense the low-pressure
steam to low-pressure steam condensate;

a steam duct configured to convey high pressure steam from the high-pressure chamber to the low-pressure chamber to reheat
the low-pressure chamber; and

a plurality of corrugated plate members that are arranged parallel to each other below a part of the pressure bulkhead and
that extend in a falling direction of the low-pressure steam condensate falling from the holes in the pressure bulkhead,

wherein the lower section of the low-pressure chamber is a reheat chamber that is configured to store the low-pressure steam
condensate falling from the holes in the pressure bulkhead,

wherein the corrugated plate members each have a corrugated shape including at least one protrusion and at least one recess
disposed alternately in the vertical direction, the at least one protrusion and at least one recess protruding and being recessed
respectively in a horizontal direction perpendicular to the vertical direction,

wherein adjacent ones of the corrugated plate members are arranged with a continuous predetermined gap therebetween,
wherein the corrugated plate members include pocket sections that open toward the low-pressure steam condensate falling along
the corrugated plate members,

wherein the pocket sections extend outwardly from the protrusions, respectively, in the horizontal direction and are configured
such that the low-pressure steam condensate falling from the holes in the pressure bulkhead flows into the pocket sections,
wherein said part of the pressure bulkhead is depressed downward to form a condensate pool, and the holes are provided only
in said part of the pressure bulkhead, and

wherein the adjacent corrugated plate members are arranged away from each other at a distance to allow the low-pressure steam
condensate falling from the holes to contact both of the adjacent corrugated plate members to form a liquid film therebetween.

US Pat. No. 9,199,342

REPAIRING METHOD FOR WALL MEMBER WITH FLOW PASSAGES

MITSUBISHI HITACHI POWER ...

1. A repairing method for a wall member with flow passages comprising:
a removal stage of removing a portion of the wall member provided with a plurality of flow passages between a base member
and a plate member;

a base member welding stage of girth welding a repairing base member to an existing base member which is the base member except
for the portion removed in the removal stage;

a flow passage forming stage of providing a plurality of overlay welds on the repairing base member to form a plurality of
beads, and forming flow passages between the adjacent beads; and

a plate member welding stage of welding a repairing plate member onto surfaces of the plurality of the overlay welds.
US Pat. No. 9,186,657

EXHAUST GAS PURIFICATION CATALYST SUPPRESSING INFLUENCE OF IRON COMPOUND

Mitsubishi Hitachi Power ...

1. A method for purifying an exhaust gas, comprising:
contacting the exhaust gas with an exhaust gas purification catalyst;
wherein the exhaust gas purification catalyst comprises titanium oxide as a main component and an oxide of one element or
two or more elements selected from the group consisting of tungsten (W), molybdenum (Mo), and vanadium (V) as an active component;

wherein the active component is reacted with a phosphoric acid or a water soluble phosphoric acid compound to form a complex
thereof so that the atomic ratio of phosphorus (P) to a catalytically active component represented by the following formula
is 0.2 to 1.0; P/catalytically active component (Atomic ratio)=number of moles of P/(number of moles of W+number of moles
of Mo+number of moles of V);

wherein the exhaust gas contains nitrogen oxide and elemental mercury; and
wherein the nitrogen oxide is reduced by ammonia.

US Pat. No. 9,109,449

TURBINE ROTOR AND MANUFACTURING METHOD OF TURBINE ROTOR

MITSUBISHI HITACHI POWER ...

1. A turbine rotor formed by welding a rotor member made of high Cr steel and a rotor member made of low Cr steel, comprising:
the rotor member made of high Cr steel containing 0.02% to 0.1% of nitrogen by mass % to reinforce strength and having a chemical
composition (1) or (2), where

(1) contains, by mass %, C: 0.05 to 0.4, Si: 0.35 or less, Mn: 2 or less, Ni: 7.0 or less, Cr: 8 to 15, Mo: 0.1 to 3, V: 0.01
to 0.5, N: 0.02 to 0.1, Nb: 0.2 or less, and balance Fe, and

(2) contains, by mass %, C: 0.05 to 0.4, Si: 0.35 or less, Mn: 2 or less, Ni: 7.0 or less, Cr: 8 to 15, Mo: 1 or less, V:
0.01 to 0.5, N: 0.02 to 0.1, Nb: 0.2 or less, W: 0.1 to 3, and balance Fe;

the rotor member made of low Cr steel having a chemical composition (3) or (4), where
(3) contains, by mass %, C: 0.2 to 0.35, Si: 0.35 or less, Mn: 1.5 or less, Ni: 0.2 to 2.0, Cr: 1.5 to 3.0, Mo: 0.9 to 1.50,
V: 0.2 to 0.30, and balance Fe, and

(4) contains, by mass %, C: 0.4 or less, Si: 0.35 or less, Mn: 1.20 or less, Ni: 3.0 to 4.5, Cr: 1.5 to 2.5, Mo: 0.1 to 1.50,
V: 0.01 to 0.3, and balance Fe; and

a weld that connects the rotor member made of high Cr steel and the rotor member made of low Cr steel together, the weld comprising
a filler material that has a chemical composition (5), where

(5) contains, by mass %, C: 0.10 or less, Si: 0.30 or less, Mn: 1.20 or less, Ni: 1.0 or less, Cr: 8.00 to 9.50, Mo: 0.60
to 1.00, V: 0.10 to 0.30, N: 0.001 to 0.025, Nb: 0.04 or less, and balance Fe.

US Pat. No. 9,188,062

GAS TURBINE

MITSUBISHI HITACHI POWER ...

1. A gas turbine comprising:
a rotor having a rotor body that rotates around a rotation axis, and a plurality of blade stages that are lined up in an axial
direction in which the rotation axis extends and that are fixed to the rotor body;

a plurality of vane stages, each of which is arranged on an upstream side of each of the plurality of blade stages; and
a casing that covers the rotor and to which the plurality of vane stages are attached to an inner peripheral side thereof;
wherein the casing comprises
a plurality of blade ring portions that form an annular shape around the rotation axis and that each cover one blade stage
and one vane stage;

a plurality of ring segments that form an annular shape around the rotation axis and that are arranged between the plurality
of vane stages on an inner peripheral side of the blade ring portions and on an outer peripheral side of the blade stages;
and

a plurality of isolation rings for attaching the ring segments arranged on one of an upstream side and a downstream side of
the vane stages;

wherein two or more of the blade ring portions that are adjacent to each other in the axial direction form an integrated blade
ring that is integrally formed;

wherein an upstream member among the ring segments and the vane stages, which is arranged on an upstream side of a predetermined
isolation ring among the plurality of isolation rings, is provided with the predetermined isolation ring, and a downstream
member among the ring segments and the vane stages, which is arranged on a downstream side of the predetermined isolation
ring, is provided with the predetermined isolation ring; and

wherein the casing further includes
a pressing member which is arranged on the upstream side of the predetermined isolation ring, which is attached to the blade
ring portion, and which pushes a pressed member of at least one of the predetermined isolation ring and the upstream member
to a downstream side.

US Pat. No. 9,816,161

NI-BASED SINGLE CRYSTAL SUPERALLOY

MITSUBISHI HITACHI POWER ...

1. A Ni-based single crystal superalloy comprising
6% A by mass or more and 12% by mass or less of Cr,
0.4% by mass or more and 3.0% by mass or less of Mo,
6% by mass or more and 10% by mass or less of W,
4.0% by mass or more and 6.5% by mass or less of Al,
0% by mass or more and 1% by mass or less of Nb,
8% by mass or more and 12% by mass or less of Ta,
0% by mass or more and 0.15% by mass or less of Hf,
0.01% by mass or more and 0.2% by mass or less of Si, and
0% by mass or more and 0.04% by mass or less of Zr, and
optionally containing at least one element selected from B, C, Y, La, Ce, and V,
with a balance being Ni and inevitable impurities,
wherein the Ni-based single crystal superalloy does not contain either Re or Co.

US Pat. No. 9,404,373

TURBINE-BLADE RETAINING STRUCTURE AND ROTARY MACHINE HAVING THE SAME

MITSUBISHI HITACHI POWER ...

7. A turbine-blade retaining structure comprising:
blade grooves that extend through a rotor disc in a disc-thickness direction so as to receive blade roots of turbine blades
arranged in a circumferential direction;

a protruding portion that protrudes, as a whole, outwards in the disc-thickness direction such that an outer circumferential
end is located at an inner side of an inner circumferential end of the blade grooves in the radial direction;

a ring-shaped locking groove that is formed in a circumferential edge portion of the protruding portion along the circumferential
direction so as to open towards an outer side in the radial direction;

a step portion that protrudes outwards in the disc-thickness direction in a circumferential edge portion on an inner circumferential
side of the blade root so as to face the locking groove; and

plate-like locking pieces received in the ring-shaped locking groove and fitted between the locking groove and the step portion;
wherein the circumferential edge portion of the protruding portion is provided with, along the circumferential direction,
at least one insertion window portion that is cut out in the disc-thickness direction such that an inner circumferential surface
thereof is flush with an inner circumferential surface of the locking groove, and

end portions of adjacent locking pieces are exposed through the insertion window portion and are joined to each other by means
of welding; and

at least one of the end portions of the locking pieces is provided with a thick-plate portion expanding in the disc-thickness
direction.

US Pat. No. 9,353,951

BURNER, COMBUSTOR AND REMODELING METHOD FOR BURNER

Mitsubishi Hitachi Power ...

1. A combustion method for a burner, the method including:
Providing an air hole member with a plurality of air holes including an inner-array of said plurality of air holes and an
outer-array of said plurality of air holes, with each said air hole in said plurality of air holes having an air hole center,
the air hole member being provided at an upstream side of a combustion chamber in a flow direction of gases passing through
the air hole member; and

providing a fuel header having a plurality of fueling nozzles with each said fueling nozzle being provided at an upstream
side of the plurality of air holes in the air hole member, the plurality of fueling nozzles including at least one first fueling
nozzle which is offset from the air hole center of each one of the plurality of air holes in the air hole member, said at
least one first fueling nozzle being generally cylindrical and having a cylindrical outer circumferential surface with a plurality
of jetting ports on said cylindrical outer circumferential surface, the plurality of fueling nozzles further including a plurality
of second fueling nozzles separate from said at least one first fueling nozzle having said plurality of jetting ports on its
cylindrical outer circumferential surface, ones of the plurality of air holes in said inner-array of said plurality of air
holes being associated with said at least one first fueling nozzle and being distinct from ones of the plurality of air holes
in said outer-array of said plurality of air holes which are associated with said second fueling nozzles, said ones of said
plurality of air holes in said inner-array of said plurality of air holes receiving fuel only from said at least one first
fueling nozzle;

jetting a first fuel flow divergently from said plurality of jetting ports on said cylindrical outer circumferential surface
of said at least one first fueling nozzle only towards at least two of the plurality of air holes, positioned in said inner-array
of said plurality of air holes on the air hole member;

directing said first fuel flow in a radially outward direction, said radially outward direction being inclined relative to
a direction of an axis of the burner;

jetting a second fuel flow from the plurality of second fueling nozzles towards outer-array of said plurality of air holes;
and

directing said second fuel flow only toward said outer-array of said plurality of said air holes in the air hole member and
which said outer-array of said plurality of air holes is separate from the at least two of the plurality of air holes in the
inner-array of air holes, which the at least two of the plurality of air holes in the inner-array of air holes are receiving
the first fuel flow from only the plurality of jetting ports on the cylindrical outer circumferential surface of said at least
one first fueling nozzle.

US Pat. No. 9,239,164

SLAG MONITORING DEVICE FOR COAL GASIFIER AND COAL GASIFIER

MITSUBISHI HITACHI POWER ...

1. A slag monitoring device for a coal gasifier the slag monitoring device, comprising:
a slag-hole observing unit that observes a slag hole from which molten slag flows out;
a water-surface observing unit that observes a situation in which the slag flowing out from the slag hole falls onto a water
surface of cooling water;

a slag-falling-sound observing unit that observes a sound of the slag falling onto the water surface;
an underwater-slag observing unit provided below the slag-falling-sound observing unit, the underwater-slag observing unit
including at least one wave transmitting sensor that transmits a detection wave toward the water onto which the slag falls
and a plurality of wave receiving sensors that receive the detection wave transmitted by the wave transmitting sensor; and

a processing device that determines a solidification and adhesion position of the slag based on an opening area of the slag
hole observed by the slag-hole observing unit, and falling lines and falling positions of the slag observed by the water-surface
observing unit, and evaluates deposition of solidified slag in the cooling water, based on the detection wave detected by
the wave receiving sensors.

US Pat. No. 9,863,315

GAS TURBINE AND OPERATION METHOD OF GAS TURBINE

Mitsubishi Hitachi Power ...

1. A gas turbine having a compressor for compressing air, a combustor for taking in compressed air discharged from the compressor,
mixing it with fuel, and burning them, and a turbine driven by combustion gas generated in the combustor, comprising:
inlet guide vanes installed at a stage near an inlet of the compressor for adjusting a compressor flow rate by changing an
attaching angle thereof,

a steam injector for injecting steam to the combustor,
a steam adjustment valve for adjusting a steam injection rate, and a steam rate controller for adjusting an opening of the
steam adjustment valve,

a steam monitor for monitoring the steam injection rate of steam injected to the combustor, an air temperature monitor for
monitoring an atmospheric temperature, and

a unit controller for determining whether a restriction value of the steam injection rate using an air temperature, an opening
of the inlet guide vanes, and the steam injection rate as indexes is satisfied, and controlling at least one of the air temperature
of air flowing into the compressor, the steam injection rate, and the inlet guide vane opening,

wherein the unit controller, using the atmospheric temperature, an output target value, and the steam injection rate as input
values,

calculates an appropriate opening of the inlet guide vanes,
compares the calculated appropriate opening with a preset restriction value of the inlet guide vanes in a restriction value
map,

determines whether or not the calculated appropriate opening of the inlet guide vanes satisfies the preset restriction value
of the inlet guide vanes, and

when the calculated appropriate opening of the inlet guide vanes does satisfy the preset restriction value, controls the opening
of the inlet guide vanes so as to become the appropriate opening calculated, and

when the calculated appropriate opening of the inlet guide vanes does not satisfy the preset restriction value, reduces the
steam injection rate.

US Pat. No. 9,780,628

GENERATOR INSPECTION METHOD

MITSUBISHI HITACHI POWER ...

1. A generator inspection method of inspecting a generator in which rotary machines are respectively connected to both ends
of a shaft, the method comprising:
a shaft disconnecting step of disconnecting the rotary machines respectively connected to the ends of the shaft;
a gap forming step of forming a gap, in a vertical direction, between an installation stand of the generator and the generator;
a pathway installing step of inserting into the gap a portion of a movement pathway member extending in a lateral direction,
the lateral direction including a horizontal direction component and a radial direction component of the shaft;

a moving step of moving the generator in the lateral direction on the movement pathway member; and
an inspecting step of inspecting the generator having undergone the moving step.

US Pat. No. 9,199,806

BIN SYSTEM AND CHAR RECOVERY UNIT

MITSUBISHI HITACHI POWER ...

8. A bin system comprising:
a container for gathering or storing powder;
a plurality of powder discharge lines placed at a predetermined slope angle, for causing the powder to fall with the force
of gravity so as to discharge the powder into the container;

a plurality of powder feed lines for causing the powder to fall with the force of gravity so as to feed the powder gathered
or stored in the container, each of the plurality of powder feed lines including:

a first linear section placed vertically;
a second linear section placed vertically; and
a slope section that couples a lower end of the first linear section and an upper end of the second linear section to each
other, the slope section being placed so as to slope at a predetermined angle; and

an assist device for assisting flow of the powder that falls with the force of gravity through the plurality of powder feed
lines, wherein

the assist device includes an assist gas feed device for feeding inert gas in a direction of flow of the powder,
the assist gas feed device includes:
an assist gas feed unit including a gas feed pipe through which the inert gas is fed; and
an assist gas discharge unit including:
a gas discharge pipe through which the inert gas that corresponds to a volume of the powder that has moved is discharged;
and

a gas recovery unit that discharges the inert gas contained inside from a rear portion of a downstream end of the slope section
to the gas discharge pipe.

US Pat. No. 9,808,809

DUST COLLECTOR, ELECTRODE SELECTION METHOD FOR DUST COLLECTOR, AND DUST COLLECTION METHOD

MITSUBISHI HITACHI POWER ...

1. A dust collector comprising:
a discharge electrode configured to have a voltage applied thereto; and
a collecting electrode having a planar member formed of a wire mesh and disposed facing the discharge electrode; wherein
the wire mesh of the planar member satisfies equations (1) and (2) below, and a gas face velocity v of penetrating the wire
mesh is such that v=not less than 0.1 m/s:

IndexT=(inter-wire distance÷2)÷opening ratio+wire diameter×gas face velocity v,  (1)

IndexT?2,   (2)

wherein a unit of IndexT is m/s,
wherein, when the wire mesh is a plain-woven or twill-woven wire mesh, the inter-wire distance is set as a minimum aperture
A of an opening which gas penetrates, the aperture A being expressed as: A=(wire pitch of the wire mesh)?(wire diameter),
or when the wire mesh is a plain dutch woven wire mesh, the inter-wire distance is set as a particle diameter R of a penetrating
spherical particle,

wherein, when the wire mesh is the plain-woven or twill-woven wire mesh, the opening ratio is a value obtained by (opening
area of the wire mesh)/(area of the wire mesh), or when the wire mesh is the plain dutch woven wire mesh, the opening ratio
is a value obtained by (area which the particle penetrates)/(area of the wire mesh),

wherein the gas face velocity v is a value obtained by (amount of gas)/(area of the wire mesh).

US Pat. No. 9,429,326

COMBUSTOR NOZZLE ASSEMBLY, COMBUSTOR EQUIPPED WITH THE SAME, AND GAS TURBINE

MITSUBISHI HITACHI POWER ...

1. A combustor nozzle assembly of a gas turbine comprising:
a nozzle mounting base that blocks a combustor insertion opening formed in a turbine casing;
a nozzle rod formed in a tubular shape, passes through the nozzle mounting base, and having a rod tip portion protruding to
an inside of the turbine casing and a rod base end portion protruding to the outside of the turbine casing;

a fuel pipe formed in a tubular shape, inserted as a whole into the nozzle rod, having a pipe tip portion fixed to the rod
tip portion of the nozzle rod and a pipe base end portion inserted into the rod base end portion of the nozzle rod, wherein
fuel is supplied to an inside of the fuel pipe through the rod base end portion, and injects the fuel from the pipe tip portion
through the rod tip portion of the nozzle rod; and

a seal member disposed in the rod base end portion of the nozzle rod and suppresses leakage of the fuel to a pipe tip portion
side between an inner periphery side of the nozzle rod and an outer periphery side of the fuel pipe,

wherein the nozzle rod comprises:
a mounting portion located in the nozzle mounting base; and
a cross-sectional area reduced portion provided between the mounting portion and the rod base end portion, wherein a cross-sectional
area of the cross-sectional area reduced portion perpendicular to a direction that the nozzle rod extends is smaller than
a maximum cross-sectional area of the mounting portion, and is also smaller than a cross-sectional area of the rod base end
portion.

US Pat. No. 9,410,432

TURBINE

Mitsubishi Hitachi Power ...

1. A turbine comprising:
a blade member; and
a structural member located close to the blade member such that a clearance is provided between a tip portion of the blade
member and the structural member, and fluid passes through the clearance, wherein

the blade member is capable of rotating with respect to the structural member,
the tip portion of the blade member is provided with stepped parts which have step surfaces facing an upstream side in a rotating
axial direction of the structural member, the stepped parts protrude toward the structural member, and the stepped parts are
aligned in the rotating axial direction,

the structural member is provided with seal fins, each seal fin extending toward a circumference surface of a corresponding
one of the stepped parts so as to form a small clearance between each seal fin and the circumference surface of the corresponding
stepped part,

a first distance between a first one of the seal fins and the step surface of the stepped part corresponding to the first
seal fin in the rotating axial direction is longer than a second distance between a second one of the seal fins adjacent to
the first seal fin and the step surface of the stepped part corresponding to the second seal fin, wherein the first seal fin
is located at the upstream side with respect to the second seal fin,

an axial directional width is set between the first seal fin and a wall surface of the structural member facing the upstream
side of the first seal fin in the rotating axial direction,

a radial directional distance is set between a lower end of the step surface of the stepped part corresponding to the first
seal fin and a bottom surface of the structural member provided with the first seal fin, and

the axial directional width and the radial directional distance are approximately set to be the same size.

US Pat. No. 9,255,604

HYDRO DYNAMIC BEARING DEVICE

Mitsubishi Hitachi Power ...

1. A hydro dynamic bearing device comprising:
an upper half of a main bearing; and
a lower half of the main bearing, wherein
the upper half of the main bearing and the lower half of the main bearing are respectively provided with a low-strength metal
formed on an inner circumferential side of a bearing base metal thereof,

the lower half of the main bearing has an oil supply port opening in a mating surface of the lower half of the main bearing
relative to the upper half of the main bearing on a downstream side, and a circumferential lubrication groove provided at
a center of a bearing width direction and in a circumferential direction,

the low-strength metal of the upper half of the main bearing, which is located at a region opposed to a downstream side outlet
of the circumferential lubrication groove of the lower half of the main bearing, is partially removed to cause the bearing
base metal to be partially exposed and

the upper half of the main bearing is provided with a wide-width oil supply/drain groove formed so as to gently extend to
the bearing surface of the upper half of the main bearing from a mating surface of the upper half of the main bearing relative
to the lower half of the main bearing.

US Pat. No. 9,651,251

METHODS AND SYSTEMS FOR CONTROLLING GAS TEMPERATURES

MITSUBISHI HITACHI POWER ...

1. A method for controlling the temperature of a heated flue gas stream at a location downstream of a multi-part heat exchanger
within a desired operating temperature range, the method comprising:
sensing, using a first temperature sensor, a temperature in said flue gas stream in proximity to an intermediate header of
said multipart heat exchanger, said multi-part heat exchanger including:

a first heat exchanger section located in said flue gas stream said first heat exchanger section having a fluid inlet coupled
to a fluid feed line;

a second heat exchanger section located in series with said first heat exchanger section in said flue gas stream, said second
heat exchanger section being located upstream of said first heat exchanger section in said flue gas stream; and

said intermediate header having a first mixer fluid input, a second mixer fluid input, and a fluid outlet, said first mixer
fluid input being coupled to a fluid output of said first heat exchanger section, and said fluid outlet being coupled to a
fluid inlet of said second heat exchanger section; and

a fluid bypass line coupling said fluid feed line to said second mixer fluid input of said intermediate header, said fluid
bypass line extending outside of said flue gas stream and providing a fluid bypass allowing at least some fluid supplied by
said fluid feed line to fully bypass said first heat exchanger section; and

controlling a position of a bypass line control valve to control an amount of fluid passing through said fluid bypass line
to the second mixer fluid input based on said temperature in said flue gas stream in proximity to the intermediate header
of said multipart heat exchanger.

US Pat. No. 9,527,004

SPRAY DRYING APPARATUS OF DEHYDRATION FILTRATE FROM DESULFURIZATION WASTE WATER, AND AIR POLLUTION CONTROL SYSTEM

MITSUBISHI HITACHI POWER ...

1. A spray drying apparatus of dehydration filtrate from desulfurization waste water comprising:
a gas inlet that is provided on a side wall in the vicinity of a top portion of a spray drying apparatus main body and introduces
a flue gas from a boiler;

rectifying plates that are provided in the spray drying apparatus main body;
a spray nozzle that sprays the dehydration filtrate emitted from the desulfurization waste water into the flue gas rectified
by the rectifying plates;

a gas outlet that is provided on a side wall in the vicinity of a bottom portion of the spray drying apparatus main body and
discharges the flue gas contributed to drying of the dehydration filtrate; and

a solid discharging means that is provided on the bottom portion of the spray drying apparatus main body and discharges a
spray-dried solid, wherein

the solid discharging means is provided with a discharge hopper and the discharge hopper is provided with a thermal insulation
means.

US Pat. No. 9,261,421

APPARATUS AND METHOD FOR MEASURING FIXING FORCE

Mitsubishi Hitachi Power ...

1. A fixing force measuring apparatus comprising:
hitting means for applying a predetermined controlled hitting force to a surface of a plate-like member to generate a hitting
sound;

means for collecting the hitting sound generated;
means for obtaining plural kinds of feature quantities from the hitting sound; and
fixing force estimating means for estimating the fixing force from a database representing a relationship between the plural
kinds of feature quantities previously prepared in correspondence to a kind of evaluation object, and the fixing force, and
the feature quantities extracted from said database and the hitting sound;

wherein a solenoid type actuator is used as said hitting means for applying the predetermined controlled hitting force to
generate the hitting sound, thereby controlling the hitting force by using a PWM system.

US Pat. No. 9,227,158

METHOD OF REGENERATING NOX REMOVAL CATALYST AND METHOD OF OPERATING HEAVY-OIL FIRED COMBUSTION APPARATUS

MITSUBISHI HITACHI POWER ...

1. A method of operating a heavy-oil fired combustion apparatus that burns heavy oil in a boiler, wherein
at an operating step before shutdown of a boiler, a part of combustion gas that has bypassed an economizer provided in a flue
gas duct for flue gas from the boiler is supplied to an upstream of a NOx removal device and mixed with flue gas from the economizer, a temperature of mixed gas is increased to a predetermined temperature
equal to or higher than 360° C., which is higher than a normal operating temperature condition, to have the NOx removal device in a high-temperature denitration condition, so that nitrogen oxide in flue gas is removed during an operation
of the NOx removal device, and vanadyl sulfate (VOSO4) adhered and accumulated on a NOx removal catalyst is decomposed into vanadium pentoxide (V2O5), and

sulfur oxide (SOx) produced at a time of decomposing vanadyl sulfate (VOSO4) into vanadium pentoxide (V2O5) at the operating step before shutdown is treated in an air pollution control facility on a downstream side of the NOx removal device.

US Pat. No. 9,101,882

WET TYPE FLUE-GAS DESULFURIZATION APPARATUS AND METHOD FOR ADJUSTING OXIDATION REDUCTION POTENTIAL OF ABSORBENT THEREFOR

MITSUBISHI HITACHI POWER ...

1. A wet type flue-gas desulfurization apparatus comprising:
a desulfurization apparatus main body;
a gas introducing unit that is disposed on a side wall of the desulfurization apparatus main body and that introduces a flue
gas;

an absorbent accumulating unit that accumulates an absorbent which has absorbed the sulfur oxide present in the flue gas;
a circulation line that circulates the absorbent from the absorbent circulating unit;
a spraying unit that is disposed in the vicinity of the middle portion of the desulfurization apparatus main body and that
sprays the absorbent, which is supplied in the circulation line, as a spray liquid from a nozzle;

an ORP meter that measures the oxidation reduction potential of the absorbent; and
a falling-liquid cushioning material that is disposed in the vicinity of the interface of the absorbent present in the absorbent
accumulating unit and that cushions a falling liquid falling from an absorber of the absorbent.

US Pat. No. 9,700,839

AIR POLLUTION CONTROL SYSTEM AND AIR POLLUTION CONTROL METHOD

MITSUBISHI HITACHI POWER ...

1. An air pollution control system comprising:
an air heater that is configured to recover heat of a flue gas after combustion;
a precipitator that is configured to remove soot and dust contained in the flue gas after heat recovery;
a desulfurization apparatus that is configured to remove sulfur oxides contained in the flue gas after dust removal, using
an absorbent;

a dehydrator that is configured to remove gypsum from absorber slurry discharged from the desulfurization apparatus;
a spray drying apparatus that is provided with a spray unit which is configured to spray dehydrated filtrate supplied from
the dehydrator;

a flue gas introduction line that is connected between a main flue gas duct and the spray drying apparatus and is configured
to branch some of the flue gas flowing through the main flue gas duct to be introduced to the spray drying apparatus;

a flue gas supply line that is connected between the spray drying apparatus and the main flue gas duct at a downstream side
of where the flue gas introduction line branched therefrom and is configured to return the flue gas obtained after the dehydrated
filtrate is dried by the spray drying apparatus to the main flue gas duct; and

a soot and dust supply unit that is configured to forcedly supply soot and dust contained in the flue gas to the flue gas
introduction line.

US Pat. No. 9,476,588

BOILER AND OPERATING METHOD OF SAME

MITSUBISHI HITACHI POWER ...

1. A boiler operating method comprising:
burning a fossil fuel with a first combustion gas used to transport the fossil fuel and a second combustion gas used to compensate
for oxygen deficiency of the first combustion gas;

switching operations between air combustion mode in which air is used as the first and the second combustion gas, and oxygen
combustion mode in which mixed gas of combustion flue gas of the fossil fuel and oxygen-rich gas is used as the first and
the second combustion gas;

in the process of switching from the air combustion mode to the oxygen combustion mode, mixing the oxygen-rich gas in the
air used as the first combustion gas in the air combustion mode; and

switching the air to the mixed gas of the combustion flue gas and the oxygen-rich gas, wherein in the process of switching
from the air combustion mode to the oxygen combustion mode, the oxygen-rich gas is mixed in the air used as the first combustion
gas, and then the oxygen-rich gas is mixed in the second combustion gas.

US Pat. No. 9,444,356

POWER SUPPLY DEVICE AND POWER SUPPLY SWITCHING METHOD

MITSUBISHI HITACHI POWER ...

1. A power supply device comprising:
a plurality of power supply units capable of supplying power to a load, wherein power is supplied to the load by a first power
supply unit that is one of the plurality of the power supply units,

wherein each of the power supply units includes:
a pulse generating unit configured to generate a pulse voltage having a pulse width corresponding to a voltage and current
to be output;

a feedback control unit configured to perform a feedback control of the pulse voltage, which is output from the pulse generating
unit, so that the current flowing in the load reaches a prescribed value; and

an abnormality detection unit configured to detect an occurrence of an abnormality in the corresponding power supply unit,
wherein when the occurrence of the abnormality in the first power supply unit is detected by the abnormality detection unit
of the first power supply unit, the first power supply unit stops the supply of power to the load, and a second power supply
unit that is one of the plurality of the power supply units and is different from the first power supply unit starts the supply
of power to the load, and

wherein a cycle of the feedback control of the second power supply unit is set to a second cycle shorter than a first cycle
that is a cycle of the feedback control set to the first power supply unit.

US Pat. No. 9,399,213

APPARATUS FOR REMOVING ARSENIC COMPOUND

MITSUBISHI HITACHI POWER ...

1. An apparatus for removing an arsenic compound, comprising a treatment unit which conducts heat-treatment of a NOx removal
catalyst contaminated with the arsenic compound at a predetermined temperature in a reducing atmosphere while exposing the
catalyst to hydrocarbon compounds except CH4 or oxygen-containing carbon compounds.

US Pat. No. 9,297,308

TEMPERATURE MEASUREMENT IN A GAS TURBINE

MITSUBISHI HITACHI POWER ...

1. A gas turbine comprising:
a rotor that rotates around an axis of rotation;
a casing that covers the rotor so as to be rotatable; and
a vane fixed to the casing,
wherein the rotor has a rotor disk centered on the axis of rotation and a plurality of turbine blades fixed to the rotor disk
and arranged in a circumferential direction with respect to the axis of rotation, in each of a plurality of stages arranged
in an axial direction in which the axis of rotation extends, and a plurality of the vanes are disposed side by side in the
circumferential direction on the upstream side of the plurality of turbine blades in each of the plurality of stages,

an upstream-side rim portion protruding to the upstream side and a downstream-side rim portion protruding to the downstream
side are formed on the rotor disk of each of the plurality of stages,

an annular seal housing is fixed to the inside of the vane in a radial direction of the rotor,
an upstream-side seal member facing the downstream-side rim portion on the upstream side with respect to the annular seal
housing is provided in the annular seal housing, and a detection end space in which a temperature detection end of a thermometer
is accommodated, a gas introduction path which leads gas in a disk cavity between the annular seal housing and the upstream-side
rim portion on the downstream side with respect to the annular seal housing and the downstream-side rim portion to the detection
end space, and a gas discharge path that discharges gas, which has reached the detection end space, further to the downstream
side than an introduction port of the gas introduction path are also formed in the annular seal housing,

the detection end space is formed at a radially outer position with respect to the upstream-side seal member, and
the introduction port of the gas introduction path is formed at a position further on the downstream side than the upstream-side
seal member, and the gas introduction path has a radially extending portion which extends toward the outside in the radial
direction from the introduction port, and an axially extending portion which extends from an outer end portion of the radially
extending portion to the upstream side along the axis of rotation and reaches the detection end space.

US Pat. No. 9,127,569

SHROUD STRUCTURE FOR GAS TURBINE

Mitsubishi Hitachi Power ...

1. A gas turbine shroud structure comprising:
a one-piece outer shroud to feed cooling air into internal sections of the gas turbine shroud structure, the outer shroud
including a hook retainer groove formed continuously along the periphery on an inner circumferential side; and

an inner shroud including a hook formed continuously along the periphery on an outer circumferential side and held on the
inner circumferential side of the outer shroud by inserting the hook into the hook retainer groove of the outer shroud, and
an inner circumferential side of the inner shroud fed with cooling air to the inside that passed by the outer shroud, facing
gas path surfaces,

wherein, in the gas turbine shroud structure including the inner shroud segmented into a plurality of inner shrouds along
the periphery, the segmented inner shroud being all retained in an outer shroud retainer groove to form a ring-shaped inner
shroud,

hook retainer grooves of the outer shroud, and the inner shroud which hooks into the hook retainer grooves, are respectively
mounted one each on an upstream side and a downstream side along an axial direction of a gas turbine;

a plurality of inner seal plate grooves are formed along the outer circumferential side of both an upstream side hook and
a downstream side hook of the inner shroud;

a plurality of a first seal plates are respectively mounted in the plurality of inner seal plate grooves;
a split surface facing an edge of adjacent inner shrouds is formed on edges of each of the plural segmented inner shrouds;
a split surface seal plate groove is formed along a corresponding split surface on the outer circumferential side of the inner
shroud; and

a plurality of a second seal plates are inserted into the split surface seal plate grooves,
wherein the first seal plates and the second seal plates are substantially disposed to contact each other so as to form a
fence with the first seal plates and the second seal plates.

US Pat. No. 9,109,461

AXIAL FLOW COMPRESSOR, GAS TURBINE SYSTEM HAVING THE AXIAL FLOW COMPRESSOR AND METHOD OF MODIFYING THE AXIAL FLOW COMPRESSOR

Mitsubishi Hitachi Power ...

7. A method of distributing a load to stator vanes disposed downstream of a last-stage rotor blade in an axial flow compressor
in which, an annular flow passage is formed by a rotor having multiple of rotor blades fitted thereto and a casing having
multiple of stator vanes fitted thereto, and three or, more stator vanes are disposed downstream of the last-stage rotor blade
of the annular flow passage, wherein
a blade loading on a first stator vane disposed downstream of the last-stage rotor blade by one vane row is set to be equal
to or lower than 1.3 times as large as a blade loading on a third stator vane disposed at the most downstream side, and

a blade loading on a second stator vane is set to be larger than the blade loading on the first stator vane, and to be 1.3
to 1.6 times as large as the blade loading on the third stator vane.

US Pat. No. 9,085,994

GAS TURBINE

MITSUBISHI HITACHI POWER ...

1. A gas turbine including a turbine cooling structure of cooling a turbine by using cooling air and a filter that reduces
dust in the cooling air on an upstream side of the turbine, the gas turbine comprising:
a supply pipe for supplying the cooling air to the filter;
a branch pipe that is branched from the supply pipe on an upstream side of the filter; and
a unit that calculates or estimates a circulation amount of dust in the cooling air, wherein
the supply pipe includes a first supply pipe which is disposed downstream of a branching point at which the branch pipe is
branched, and a second supply pipe which is disposed upstream of the branching point,

the first supply pipe includes a first valve, and the branch pipe includes a second valve,
at a time of start-up of the turbine, the first supply pipe is closed and the branch pipe is opened, and
when the circulation amount of dust in the cooling air becomes equal to or less than a predetermined threshold k1, the first supply pipe is opened and the branch pipe is closed.

US Pat. No. 9,890,672

COMBUSTION GAS COOLING APPARATUS, DENITRATION APPARATUS HAVING THE COMBUSTION GAS COOLING APPARATUS, AND COMBUSTION GAS COOLING METHOD

MITSUBISHI HITACHI POWER ...

1. A combustion gas cooling apparatus comprising:
a first duct through which a combustion gas travels; and
a cooling duct from which a cooling gas at a temperature lower than the temperature of the combustion gas flows out into the
first duct to form a mixed gas in which the combustion gas and the cooling gas are mixed, the cooling duct having:

a cooling gas flow inlet into which the cooling gas flows;
a plurality of cooling gas flow outlets through which the cooling gas having flowed in through the cooling gas flow inlet
flows out into the first duct; and

a distribution passage through which the cooling gas having flowed into the cooling gas flow inlet is distributed to the plurality
of cooling gas flow outlets,

wherein the distribution passage is a passage partitioned by a plurality of partition plates connecting a lower surface and
an upper surface of the cooling duct.

US Pat. No. 9,567,558

BIOMASS HYDROTHERMAL DECOMPOSITION SYSTEM AND SACCHARIDE-SOLUTION PRODUCTION METHOD USING BIOMASS MATERIAL

MITSUBISHI HITACHI POWER ...

1. A saccharide-solution production method using a biomass material, comprising:
putting a biomass material under an increased pressure, the biomass material containing cellulose, hemicellulose, and lignin
under a normal pressure, and feeding the biomass material under the increased pressure to a biomass material inlet provided
at a lower end side of a vertical hydrothermal decomposition unit;

feeding pressurized hot water to a pressurized hot water inlet provided at an upper end side of the hydrothermal decomposition
unit, so as to provide a first gas-liquid interface between the biomass material inlet and the pressurized hot water inlet
of the hydrothermal decomposition unit;

supplying a pressurizing gas to a pressurizing gas inlet provided at the upper end side of the hydrothermal decomposition
unit;

conveying the biomass material from the biomass material inlet to a biomass material outlet provided at the upper end side
of the hydrothermal decomposition unit to hydrothermally decompose the biomass material using the pressurized hot water in
the hydrothermal decomposition unit; and

dissolving a lignin component and a hemicellulose component in the pressurized hot water, so as to discharge hot-water effluent
containing the lignin component and the hemicellulose component from a hot water outlet provided at the lower end side of
the hydrothermal decomposition unit;

extracting the hydrothermally decomposed biomass material as a biomass solid from the biomass material outlet of the hydrothermal
decomposition unit;

injecting water in a slurrying vessel that communicates with the hydrothermal decomposition unit and has a water inlet at
an upper side thereof and an outlet at a lower side thereof, so as to provide a second gas-liquid interface between the water
inlet and the outlet of the slurrying vessel;

adding the biomass solid discharged from the hydrothermal decomposition unit to the slurrying vessel so as to obtain a slurried
biomass solid;

measuring pH of the slurried biomass solid;
removing water from the slurried biomass solid;
performing enzymatic saccharification of the water-removed biomass solid to produce a first saccharide solution; and
performing enzymatic saccharification of the hot-water effluent, so as to produce a second saccharide solution,
wherein a liquid seal that prevents leakage of the pressurized gas is provided by the first gas-liquid interface and the second
gas-liquid interface, and

wherein the saccharide-solution production method further comprises:
on the basis of the measured pH, controlling at least one of the following:
(i) a feed amount of the pressurized hot water;
(ii) a feed amount of the biomass material;
(iii) a conveying rate of the biomass material by a screw means;
(iv) a liquid level of the first gas-liquid interface of the hydrothermal decomposition unit; and
(v) a discharge amount of the hot-water effluent.

US Pat. No. 9,458,765

INTAKE AIR COOLING SYSTEM

MITSUBISHI HITACHI POWER ...

1. An intake air cooling system for a gas turbine, the system comprising:
an intake duct configured to lead intake air taken in from an intake-air inlet to a compressor of the gas turbine, the intake
duct having a vertical duct and a manifold part disposed on a downstream side of the vertical duct;

a cooling part provided in the intake duct and configured to cool the intake air by heat exchange with a cooling medium which
is introduced from an outside;

a filter part provided on an inlet side of the manifold part and configured to remove impurities contained in the intake air
introduced through the vertical duct; and

a drain catcher constituted by a gutter member provided immediately above the filter part along an inner wall surface of the
vertical duct, the drain catcher being configured to collect drain water flowing along the inner wall surface of the vertical
duct.

US Pat. No. 9,341,068

BLADE

Mitsubishi Hitachi Power ...

1. A blade disposed on an outer periphery of a rotor, comprising:
a blade portion;
a dovetail portion for holding the blade on the rotor;
a platform portion that connects the dovetail portion and the blade portion; and
a stress relief groove that connects a side surface of the platform portion and a blade load bearing surface of the dovetail
portion, the stress relief groove disposed only in a range outside in a widthwise direction of the platform portion relative
to the side surface of the platform portion, on a bottom side of the dovetail portion relative to an intersection point between
the side surface of the platform portion and the stress relief groove,

wherein the dovetail portion has a width that increases toward the bottom side thereof within a range from a connection point
between the side surface of the platform portion and the stress relief groove to a connection point between the dovetail portion
and the stress relief groove.

US Pat. No. 9,181,807

BLADE MEMBER AND ROTARY MACHINE

MITSUBISHI HITACHI POWER ...

1. An airfoil member comprising:
an airfoil body;
an end wall which is installed at an end part of the airfoil body in a blade span direction and extends so as to intersect
in the blade span direction;

a fillet portion which smoothly connects the end part of the airfoil body with the end wall; and
a cooling channel which allows a cooling medium to circulate inside the airfoil body and the end wall and in which two main
channels extending along the blade span direction are connected so as to bend in a folding manner at a return channel formed
on the end wall side, wherein

the return channel is formed in a flat shape in which a length in the blade span direction is smaller than a length in a profile
thickness direction so as to run along the fillet portion on a cross section intersecting with a center line of a profile
of the airfoil body,

the return channel is provided with an enlarged portion, wherein the width of the enlarged portion in the profile thickness
direction is greater than the width of the main channel in the profile thickness direction, and a channel inner wall of the
enlarged portion is expanded in the profile thickness direction,

the channel inner wall of the enlarged portion is expanded outward from the end part of the airfoil body along a gas path
surface of the fillet portion, and

the return channel has a base part and a projection part, the projection part is formed at the center of the base part in
the profile thickness direction and projects from the base part.

US Pat. No. 9,133,769

CONNECTION STRUCTURE OF EXHAUST CHAMBER, SUPPORT STRUCTURE OF TURBINE, AND GAS TURBINE

MITSUBISHI HITACHI POWER ...

1. A support structure of a turbine comprising:
a turbine main body formed in a cylindrical shape, forming an exhaust system, and including an exhaust chamber and an exhaust
duct;

an outer shell member formed in a ring shape and disposed at an outer peripheral side of the exhaust chamber; and
an exhaust chamber leg for mounting the turbine main body, wherein the exhaust chamber leg connects between the outer shell
member and a floor of a turbine building,
wherein
the exhaust chamber is disposed upstream of the exhaust duct,
the exhaust chamber and the outer shell member are connected by a support member that is configured to absorb thermal expansion,
and

the outer shell member and the exhaust duct are connected by a high-temperature expansion joint that is configured to absorb
thermal expansion.

US Pat. No. 9,114,391

METHOD FOR REMOVING ARSENIC COMPOUND, METHOD FOR REGENERATING NOX REMOVAL CATALYST, AND NOX REMOVAL CATALYST

MITSUBISHI HITACHI POWER ...

1. A method for removing an arsenic compound, comprising heat-treating a NOx removal catalyst contaminated with the arsenic
compound at a predetermined temperature in a reducing atmosphere while exposing the catalyst to hydrocarbon compounds except
CH4 or oxygen-containing carbon compounds.

US Pat. No. 9,103,223

SHAFT SEALING DEVICE AND ROTATING MACHINE COMPRISING SAME

MITSUBISHI HITACHI POWER ...

1. A shaft sealing device provided in an annular space between a rotor and a stator surrounding an outer periphery of the
rotor to divide the annular space into a high-pressure region and a low-pressure region in a direction of an axis of the rotor,
the shaft sealing device comprising:
a seal body having a plurality of thin plate sealing pieces that extend from the stator toward a radial inner side of the
rotor and are stacked in a circumferential direction of the rotor;

a high-pressure side plate that extends from the stator toward a radial inner side so as to run along a high-pressure side
of the seal body, and is segmented into a plurality of portions in the circumferential direction; and

a rigidity imparting member configured to impart rigidity in the direction of the axis of the rotor to a portion of a surface
of the high-pressure side plate that faces the high-pressure region,

wherein the rigidity imparting member is a supporting plate portion comprising a first plate piece and a second plate piece,
wherein the first plate piece is stacked on the surface of the high-pressure side plate that faces the high-pressure region,
and extends from the stator toward the radial inner side, wherein a longitudinal length of the first plate piece is shorter
than the high-pressure side plate, and

wherein the second plate piece is stacked on the surface of the first plate piece that faces the high-pressure region, and
extends from the stator toward the radial inner side, wherein a longitudinal length of the second plate piece is shorter than
the first plate piece.

US Pat. No. 9,541,281

HIGH-TEMPERATURE PIPING PRODUCT AND METHOD FOR PRODUCING SAME

MITSUBISHI HITACHI POWER ...

1. A high-temperature piping product for flowing a high-temperature fluid, configured from a plurality of primary pipe members
and a welding material,
wherein the primary pipe members are each made from an Ni-based forged alloy which contains Ni, Al, and at least one of Mo
and W, the total content of the Mo and the W being 3 mass % or more and 8 mass % or less, and the Ni-based forged alloy having
a ?? phase precipitated therein in 30 volume % or more in which the precipitated ?? phase has a ??-phase dissolution temperature
of from 920 to 970° C. and a precipitation characteristic of 30 volume % or more in a temperature range of from 700 to 800°
C.,

wherein the welding material is made from an Ni-based cast alloy having a cast structure formed by welding, the Ni-based cast
alloy containing Ni, Al, and at least one of Mo and W, the total content of the Mo and the W being 9 mass % or more and 15
mass % or less, and the Ni-based cast alloy having another ?? phase precipitated therein in 20 volume % or more in which the
another precipitated ?? phase has a ??-phase dissolution temperature of from 850 to 900° C. and a precipitation characteristic
of 20 volume % or more in a temperature range of from 700 and 800° C., and

wherein the welding material is buttered to the primary pipe members in portions welded to each other.

US Pat. No. 9,399,927

METHOD AND APPARATUS FOR OPERATING A GAS TURBINE POWER PLANT AT LOW LOAD CONDITIONS WITH STACK COMPLIANT EMISSIONS LEVELS

Mitsubishi Hitachi Power ...

1. An apparatus for a gas turbine power plant that configures emission control equipment such that the plant can extend the
emissions compliant operational range below the traditional Gas Turbine Minimum Emissions Compliance Load (GT MECL), said
apparatus comprising:
a heat exchanger;
a plurality of carbon monoxide (CO) oxidation catalysts arranged in series; and
at least one Selective Catalytic Reduction (SCR) catalyst downstream of said plurality of oxidation catalysts that reduces
NOx emissions to maintain emissions compliance at low loads as well as between 50% and 100% load,

wherein at least one of the plurality of CO catalysts is provided upstream of said heat exchanger and at least one of the
plurality of CO catalysts is provided downstream of said heat exchanger.

US Pat. No. 9,289,720

SYSTEM AND METHOD FOR TREATING MERCURY IN FLUE GAS

MITSUBISHI HITACHI POWER ...

1. A system for treating mercury in flue gas, comprising:
a boiler that discharges flue gas containing mercury;
a reduction-oxidation assistant supplying unit that is provided downstream of the boiler to supply a reduction-oxidation assistant;
a denitration device that is provided downstream of the reduction-oxidation assistant supplying to denitrate nitrogen oxide
(NOx) in the flue gas;

an air heater that is provided downstream of the denitration device to adjust a temperature of the flue gas;
a heat exchanger that is provided downstream of the air heater to lower the temperature of the flue gas;
a mercury adsorbent supply device that is provided downstream of the heat exchanger and supplies a mercury adsorbent into
the flue gas so as to adsorb the mercury with the mercury adsorbent;

a precipitator that is provided downstream of the heat exchanger to collect the mercury adsorbent with adsorbed mercury and
soot in the flue gas;

a mercury adsorption assistant supply device that is provided downstream of the precipitator and supplies a mercury adsorption
assistant into the flue gas so as to remove mercury remaining in the flue gas; and

a desulfurization device that is provided downstream of the mercury adsorption assistant supply device to remove sulfur oxide
(SOx) in the flue gas.

US Pat. No. 9,109,513

COMBINED CYCLE ELECTRIC POWER GENERATION PLANT AND HEAT EXCHANGER

MITSUBISHI HITACHI POWER ...

1. A combined cycle electric power generation plant, comprising:
a heat recovery steam generator that generates steam for steam turbine driving using heat of exhaust gas of a gas turbine,
including an economizer,

a first heat exchanger that heats high-pressure feed water supplied from the economizer of the heat recovery steam generator
by compressed air for turbine cooling extracted from a compressor of the gas turbine to thereby cool the compressed air, and

a second heat exchanger connected in series with the first heat exchanger along a supply path for the compressed air, and
heating a fuel gas for the gas turbine by supplying the compressed air passed through the first heat exchanger to further
cool the compressed air to thereby heat the fuel gas.

US Pat. No. 9,080,464

GAS TURBINE AND METHOD OF OPENING CHAMBER OF GAS TURBINE

MITSUBISHI HITACHI POWER ...

1. A gas turbine comprising:
a combustor chamber that houses a combustor unit configured to include a combustor that burns fuel to generate combustion
gas for rotating a rotator;

a turbine unit chamber that houses a turbine-side rotator, which is the rotator and rotates upon reception of the combustion
gas;

a compressor casing;
a combustor casing that forms the combustor chamber inside thereof;
a turbine unit casing that forms the turbine unit chamber inside thereof;
a casing assembly that is configured to include the compressor casing, the combustor casing, and the turbine unit casing,
in which

a first divided portion on a surface orthogonal to a rotation axis of the rotator is not formed in the combustor casing, but
is formed downstream of the combustor casing in the flow of the combustion gas, and

a second divided portion on a surface orthogonal to the rotation axis of the rotator is not formed in the combustor casing,
but is formed in the compressor casing upstream of the combustor casing in the flow of the combustion gas;

a turbine-unit rotor blade constituting the turbine;
a cooling air chamber which is formed inside the turbine unit casing and outside of the turbine-unit rotor blade in a radial
direction of the rotation axis, and is supplied with cooling air for cooling the turbine;

a partition member that protrudes toward an inner periphery of the casing assembly along a surface orthogonal to the rotation
axis and divides the cooling air chamber; and

a turbine diaphragm which is disposed inside the turbine unit casing and is formed by protruding the partition member toward
outside in the radial direction,

wherein
the compressor casing, the combustor casing and the turbine unit casing are configured to be divisible into a lower casing
on a ground and a unitary first upper casing which is farther than the lower casing from the ground, when the gas turbine
is installed, respectively, wherein flanges provided on each the lower casing and the upper casing are connected by a bolt,

the first divided portion is a connected surface where an upstream side flange disposed at upstream side of the combustion
gas flow in the casing assembly and a downstream side flange disposed at downstream side of the combustion gas flow in the
casing assembly are tightly connected such that the upstream side flange and the downstream side flange contact with one another,

the connected surface of the upstream side flange is disposed at a position corresponding to a downstream side circumferential
surface of the turbine diaphragm where the partition member disposed inside the turbine unit casing protrudes outward in the
radial direction, and

the unitary first upper casing extends from the second divided portion to the first divided portion.

US Pat. No. 10,113,932

METHOD AND APPARATUS FOR DETECTING BREAKAGE OF PIPING IN COMBINED POWER PLANTS

MITSUBISHI HITACHI POWER ...

1. A method for detecting breakage of piping in a combined power plant in which piping through which a second fluid circulates is disposed in a container through which a first fluid circulates for heat exchange between the first fluid and the second fluid, the method comprising the steps of:closing an outlet of the piping;
supplying the second fluid into the piping with a pump;
closing an inlet of the piping with the piping filled with the second fluid; and
determining breakage of the piping based on a change in pressure of the second fluid in the piping with the inlet and the outlet closed,
wherein breakage of the piping is determined based on a change in the pressure of the second fluid in the piping when the outlet of the piping is closed after the first fluid bypasses the container through a bypass line and the second fluid is supplied to the piping in the combined power plant during startup of the combined power plant.

US Pat. No. 10,060,276

TURBINE ROTOR, TURBINE, AND METHOD FOR REMOVING SEAL PLATE

MITSUBISHI HITACHI POWER ...

1. A method for removing a seal plate of a turbine rotor, the turbine rotor including:a rotor shaft part extending in an axial direction;
a plurality of blades secured to an outer periphery of the rotor shaft part;
for each of the blades:
a seal plate facing a blade root of one of the blades on at least one side in the axial direction of the blade root, the seal plate being configured to be fitted into a groove and to seal off a flow of gas in the axial direction, the groove being defined in a platform of the one of the blades so as to be recessed toward an outer side in a radial direction and to extend in a peripheral direction;
a locking plate on an inner side in the radial direction of the seal plate, the locking plate being engaged with an end portion on the inner side in the radial direction of the seal plate with both the locking plate and the end portion on the inner side in the radial direction of the seal plate partially overlapping each other in the radial direction; and
a protrusion portion that projects toward the outer side in the radial direction on an end portion on the outer side in the radial direction of the seal plate, the method comprising:
forming a blind hole in advance that allows a removing tool to be inserted therein in a first surface of the seal plate opposite a second surface of the seal plate that faces the blade root;
removing the locking plate; and
removing the seal plate by inserting the removing tool into the blind hole and operating the removing tool to move the seal plate to the inner side in the radial direction and in the peripheral direction of the turbine rotor or at least to the inner side in the radial direction,
wherein the removing the seal plate is performed by applying a force toward the inner side in the radial direction to the removing tool,
wherein an inside groove which extends in the peripheral direction is defined in the rotor shaft part so that an end portion of the inner side in the radial direction of the locking plate is inserted into the inside groove, and
wherein the removing the locking plate is performed by moving the locking plate in the peripheral direction while moving the locking plate in the axial direction.

US Pat. No. 9,995,223

COMBUSTOR AND METHOD OF FUEL SUPPLY AND CONVERTING FUEL NOZZLE FOR ADVANCED HUMID AIR TURBINE

Mitsubishi Hitachi Power ...

1. A fuel control method for humid air turbines, the method comprising:providing a compressor which compresses intake air to form high pressure air;
providing a gas turbine combustor which generates combustion gas;
providing a turbine driven by the combustion gas;
providing a humidification tower which humidifies the high pressure air to form humid air;
providing a recuperator which heats the humid air with exhaust gas discharged from the turbine to form high temperature air; and
providing a controller,
wherein the gas turbine combustor includes plural combustion units, the plural combustion units comprising plural fuel nozzles supplying fuel and plural air nozzles supplying a portion of the high temperature air, wherein the plural combustion units burn the fuel and the portion of the high temperature air to generate the combustion gas, and wherein a first group of the plural combustion units have a higher flame stabilizing performance than a second group of the plural combustion units,
wherein the controller sets a first fuel ratio defining a first flow of the fuel that is fed to the first group of the plural combustion units, calculates a first bias of the first fuel ratio based on a feed water volume supplied to the humidification tower, determines a flow bias of the first fuel ratio by adding a lag bias to the first bias, and determines an adjusted first fuel ratio by adding the first fuel ratio and the flow bias of the first fuel ratio,
wherein the controller determines the lag bias based on a first order lag of the feed water volume supplied to the humidification tower and a time constant, and
wherein the controller adjusts the first flow of the fuel that is fed to the first group of the plural combustion units according to the adjusted first fuel ratio, thereby accounting for moisture content in the humid air.

US Pat. No. 9,885,257

FLEXIBLY OPERABLE POWER PLANT AND METHOD FOR THE OPERATION THEREOF

MITSUBISHI HITACHI POWER ...

1. A power plant which has a large-scale steam generator which is equipped with carbon-fired burners and/or a gas turbine
and has a connected water/steam circuit comprising at least one steam-charged turbogenerator comprising at least one connected
generator, wherein a CO2-containing offgas stream is produced in the large-scale steam generator equipped with the carbon-fired burners,
and which comprises at least one unit for production of a CO2-rich gas stream,

and which is connected by its power-generating component comprising the at least one generator to a public power grid which
provides control power, wherein the release of electrical power by the power-generating component of the power plant to the
power grid is subject to power control on the power grid side,

wherein the power plant comprises at least one electrolysis plant for preparation of hydrogen (H2) and at least one synthesis plant for preparation of methanol and/or methanol conversion products from at least CO2 components of the CO2-rich gas stream and the hydrogen produced in the electrolysis plant, and wherein the at least one unit for production of
a CO2-rich gas stream and the at least one electrolysis plant for preparation of hydrogen (H2) and the at least one synthesis plant for preparation of methanol and/or methanol conversion products from at least CO2 components of the CO2-rich gas stream and the hydrogen produced in the electrolysis plant are connected and interconnected physically and electrically
to one another in terms of conduction via current-conducting and via media-conducting lines to form a group in such a way
that the power generated on the power plant side in the course of operation of the power plant is utilizable wholly or partly,
as required, for operation of one, more than one or all of this group of units and plants comprising the at least one unit
for production of a CO2-rich gas stream, the at least one electrolysis plant for preparation of hydrogen (H2) and the at least one synthesis plant for preparation of methanol and/or methanol conversion products.

US Pat. No. 9,810,094

STEAM TURBINE FORCED AIR COOLING SYSTEM, EQUIPMENT, AND STEAM TURBINE EQUIPPED WITH IT

Mitsubishi Hitachi Power ...

1. A steam turbine forced air cooling system for forcibly cooling a steam turbine after shutdown of the steam turbine, comprising:
a first branch pipe branched off from a pipe on a steam inlet side configured to supply steam to the steam turbine;
a non-steam-driven ejector disposed on the branch pipe; and
a stop valve disposed in the branch pipe at a position closer to the pipe on the steam inlet side than to the non-steam-driven
ejector, wherein

the non-steam-driven ejector is installed separately from an existing vacuum pump or a steam-driven ejector,
the existing vacuum pump or the steam-driven ejector is configured to produce a vacuum in a condenser,
the first branch pipe does not connect the existing vacuum pump or the steam-driven ejector, and
the non-steam-driven ejector releases an exhaust air to an atmosphere through the first branch pipe without passing through
the existing vacuum pump or the steam-driven ejector.

US Pat. No. 9,810,159

METHOD AND APPARATUS FOR CONTROLLING GAS TURBINE COMBUSTOR

Mitsubishi Hitachi Power ...

1. A method for controlling a gas turbine combustor including a diffusion combustion burner
and a premix combustion burner, comprising the steps of:
detecting a rotating speed of a gas turbine;
recording a detected value of the rotating speed of the gas turbine;
calculating a value of a change of the rotating speed with respect to time of the gas turbine in accordance with the detected
value of the rotating speed of the gas turbine;

detecting an opening angle of a compressor bleed valve installed in a compressor;
regulating a fuel flow rate fed to the gas turbine combustor on the basis of results of the value of the change of the rotating
speed with respect to time of the gas turbine and a signal of the opening angle of the bleed valve; and

controlling with a fuel control unit to control a fuel flow rate for a diffusion combustion to be fed to the diffusion combustion
burner installed in the gas turbine combustor and a fuel flow rate for a premix combustion to be fed to the premix combustion
burner so as to switch a combustion state of the gas turbine combustor from an independent diffusion combustion by the diffusion
combustion burner to a mixed combustion of the diffusion combustion and the premix combustion by the diffusion combustion
burner and the premix combustion burner, wherein:

when it is detected that the rotating speed of the gas turbine increased from a rated rotating speed at a time that a load
dump of the gas turbine begins to decrease and the opening angle of the bleed valve installed in the compressor is totally
closed,

regulating the fuel control unit to control the fuel flow rate fed to the gas turbine combustor; and
switching the gas turbine combustor from the independent diffusion combustion by the diffusion combustion burner to the mixed
combustion of the diffusion combustion and the premix combustion by the diffusion combustion burner and the premix combustion
burner by respectively controlling the fuel flow rate for the diffusion combustion fed to the diffusion combustion burner
and the fuel flow rate for the premix combustion fed to the premix combustion burner.

US Pat. No. 9,463,411

CARBON DIOXIDE CHEMICAL ABSORPTION SYSTEM INSTALLED WITH VAPOR RECOMPRESSION EQUIPMENT

MITSUBISHI HITACHI POWER ...

6. A carbon dioxide chemical absorption system comprising:
a CO2 chemical absorption equipment comprising an absorption column which absorbs carbon dioxide (CO2) in a carbon dioxide-containing gas with the use of an absorbing solution comprising an amine compound as a main component
and a regeneration column which regenerates the absorbing solution by desorbing CO2 from

the absorbing solution which absorbed CO2;

a flash tank which depressurizes the absorbing solution withdrawn from a lower part of the regeneration column to flash-evaporate
the absorbing solution;

a vapor recompression equipment which compresses a vapor generated by the flash tank;
a temperature control device which adjusts a vapor compressed by the vapor recompression equipment to be within a predetermined
temperature; a piping for feeding a vapor adjusted to the predetermined temperature by the temperature control device to the
regeneration column; and

a piping which feeds to the temperature control device a part of the absorbing solution withdrawn from a lower part of the
flash tank as a coolant.

US Pat. No. 9,400,111

GAS TURBINE COMBUSTOR AND GAS TURBINE

MITSUBISHI HITACHI POWER ...

1. A gas turbine combustor which is arranged in an interior space of a casing of a gas turbine, the combustor comprising:
a first tubular member which is formed by abutting ends of a curved panel member and welding the ends together along a welding
line, and has an interior where combustion gas flows; and

a communication tube configured to connect the interior space of the first tubular member to the interior space of a second
tubular member of an adjacent combustor,

wherein a position of the welding line coincides with a connection position for connecting the communication tube to the first
tubular member, and a cooling air hole is provided in at least the communication tube so as to introduce cooling air from
the interior space of the casing to the interior of the first tubular member.

US Pat. No. 9,312,558

FUEL CELL, METHOD FOR MANUFACTURING THE SAME, AND APPLICATION APPARATUS USED FOR MANUFACTURING THE SAME

MITSUBISHI HITACHI POWER ...

1. A fuel cell comprising:
a cell stack in which a cell including an anode, a solid electrolyte film and a cathode on an outer peripheral surface of
a substrate tube is formed in a circumferential direction of the substrate tube, a plurality of the cells are arranged along
a longitudinal direction of the substrate tube, and an interconnector connecting the cells electrically in series is formed
between the adjacent cells,

wherein a thickness of an end portion of the cathode in the longitudinal direction, the portion being in contact with the
interconnector, is larger than a thickness of a center portion of the cathode in the longitudinal direction.

US Pat. No. 9,255,908

TIGHTNESS MEASURING APPARATUS AND MEASURING METHOD

Mitsubishi Hitachi Power ...

1. A tightness measuring apparatus of a fixed member, comprising:
tapping means for applying a controlled tapping force to a plurality of positions on a surface of the one member, thereby
allowing tap tones to be generated;

tone collecting means for collecting the plurality of generated tap tones;
arithmetic operating means for obtaining one feature amount from the plurality of collected tap tones by an arithmetic operation
and obtaining a tightness corresponding to said feature amount by using a database showing a correlation between tightness
of said member and a feature amount of the tap tone,

the tapping means having a plurality of hammers for tapping the surface of the one member, a plurality of solenoids each of
which drives each of the hammers, and a plurality of springs each of which acts to keep each of the hammers at a predetermined
position when no current is supplied to each of the solenoids;

detecting means of a gravity acceleration; and
means for controlling a driving current of said tapping means on the basis of a signal of said gravity acceleration.

US Pat. No. 9,062,885

FUEL NOZZLE, GAS TURBINE COMBUSTOR WITH THE SAME, AND GAS TURBINE WITH THE SAME

MITSUBISHI HITACHI POWER ...

1. A fuel nozzle, comprising:
an internal cylinder;
a burner cylinder concentrically provided on an outer circumference of the internal cylinder in the vicinity of a distal end
thereof to surround a distal end portion of the internal cylinder;

an air passage provided between the burner cylinder and the internal cylinder for delivering combustion air;
a space provided at an axial center of the internal cylinder and extending in an axial direction of the internal cylinder;
a plurality of inner passages provided at approximately equal intervals in a circumferential direction of the internal cylinder
for injecting fluid through a distal end portion;

at least one communication portion provided on an upstream side of the distal end portion of the internal cylinder and extending
from an outer wall of the internal cylinder toward an inner side in a radial direction to communicate with the space;

a circular return combustion air passage provided in the internal cylinder to be sandwiched between the inner passages and
the space and extending in the axial direction of the internal cylinder; and

a plurality of connection portions connecting the return combustion air passage and the air passage, wherein
part of the combustion air passing through the air passage is delivered into the space through the communication portion and
is discharged from a distal end portion of the space, and

a porous plate with a plurality of holes communicating with the space is provided at a distal end of the space, and a blocker
closing the return combustion air passage is provided at a distal end of the return combustion air passage.

US Pat. No. 10,094,567

DUAL-FUEL INJECTOR WITH A DOUBLE PIPE SLEEVE GASEUS FUEL FLOW PATH

Mitsubishi Hitachi Power ...

1. A dual-fuel burning gas turbine combustor comprising: a liquid fuel and a gaseous fuel, in which a diffusive combustion burner that burns the liquid fuel and the gaseous fuel is placed at the center of the axis of the gas turbine combustor anda plurality of pre-mixing combustion burners that burns the liquid fuel and the gaseous fuel are placed on an outer circumferential side of the diffusive combustion burner, each pre-mixing combustion burner comprising:
a liquid fuel nozzle through which the liquid fuel is supplied;
a plurality of gaseous fuel spray holes through which the gaseous fuel is supplied;
a plurality of air holes through which a combustion air is supplied; and
a gaseous fuel flow path through which the gaseous fuel is supplied to the plurality of gaseous fuel spray holes, the fuel spray holes and the air holes are being placed on an outer circumferential side of the liquid fuel nozzle, and a pre-mixing chamber in which the gaseous fuel and the combustion air are mixed together;
an end cover which is provided with the pre-mixing combustion burner at the downstream side thereof, and a flow path through which the gaseous fuel supplied from the gaseous fuel flow path configured to provide gaseous fuel flow, is formed within the end cover; and
a double pipe sleeve which is attached to at a connected portion between the flow path disposed in the end cover and the gaseous fuel flow path disposed in the pre-mixing combustion burner;
wherein, the double pipe sleeve which is provided with a cylindrical inner sleeve through which the gaseous fuel flows down from the flow path disposed in the end cover to a gaseous fuel flow path disposed in the pre-mixing combustion burner, an outer sleeve which is disposed to be concentric with the cylindrical inner sleeve positioned on an outer circumferential side of the cylindrical inner sleeve;
the cylindrical inner sleeve and the outer sleeve of the double pipe sleeve both extend and overlap each other approximately between an upstream portion of the gaseous fuel flow path and a downstream portion of the gaseous fuel flow path;
the outer sleeve of the double pipe sleeve has a first end that is attached to an inner wall surface of the pre-mixing combustion burner by a first welded portion approximately at the downstream portion of the gaseous fuel flow path;
the cylindrical inner sleeve of the double pipe sleeve has a first end that is attached to a second end of the outer sleeve of the double pipe sleeve by a second welded portion at the upstream portion of the gaseous fuel flow path; and
a circular spacing is formed between and enclosed by the cylindrical inner sleeve and the outer sleeve of the double pipe sleeve.

US Pat. No. 9,657,585

AXIAL COMPRESSOR AND OPERATION METHOD OF THE SAME

Mitsubishi Hitachi Power ...

1. An axial compressor comprising a liquid drop spray nozzle for feeding liquid drops to an operating fluid of the compressor
as intake air, a casing for forming a flow path through which the operating fluid flows down and a plurality of stages, each
of which is composed of one continuous rotor blade row and one continuous stator vane row, the axial compressor being structured
so that the liquid drops evaporate inside the compressor, characterized in that:
the casing is provided with a cavity therein, and the cavity is formed by an outer casing and an inner casing which is enclosing
a periphery of the rotor blade rows at the plurality of stages and forming internally a flow path of the operating fluid,
and

another flow path is provided for feeding the operating fluid to the cavity on a downstream side of a region forming the cavity
of the inner casing, wherein

the another flow path is a flow path for feeding the operating fluid bled from an intermediate stage of the compressor via
a bleed pipe as turbine cooling air for cooling a turbine driven by high-temperature combustion gas and connected to the cavity
for feeding a part of the operating fluid to the cavity.

US Pat. No. 9,551,224

TURBINE AND METHOD FOR MANUFACTURING TURBINE

MITSUBISHI HITACHI POWER ...

1. A turbine comprising:
a shaft body supported rotatably;
a plurality of turbine blade members that is provided on an outer periphery of the shaft body and constitutes a turbine blade
row in a circumferential direction of the shaft body;

a casing covering the shaft body and the turbine blade row;
an outer ring that is provided on an inner periphery of the casing and includes an inner peripheral portion in which a cross-section
having an uneven shape is continuous in a circumferential direction;

a plurality of turbine vane members that each has a shroud fitted into the inner peripheral portion of the outer ring and
a turbine vane main body extending from the shroud to a radially inward side and that is provided in the circumferential direction
and constitutes a turbine vane row in which the shrouds adjacent to each other are aligned in the circumferential direction;
and

a plate member that connects at least some of the plurality of turbine vane members and covers one side of the shrouds in
an axial direction, thereby sealing a shroud gap formed between the shrouds adjacent to each other in the circumferential
direction,

wherein the inner peripheral portion of the outer ring is formed as a groove extending in the circumferential direction, and
the plate member seals at least a portion of each of the shrouds that protrude from the inner peripheral portion of the outer
ring to the radially inward side of the shroud gap.

US Pat. No. 9,540,934

HOT PART OF GAS TURBINE, GAS TURBINE INCLUDING THE SAME, AND MANUFACTURING METHOD OF HOT PART OF GAS TURBINE

MITSUBISHI HITACHI POWER ...

1. A hot part of a gas turbine that defines a ring-shaped combustion gas flow path around a rotor, the combustion gas flow
path having combustion gas flowing therethrough, the hot part comprising:
a planar member that includes a gas path surface, the gas path surface facing at least one of an inner side and an outer side
in a radial direction of the rotor in the combustion gas flow path,

wherein the planar member includes a cooling flow path that is formed in an interior of the planar member along an outer peripheral
surface that intersects the gas path surface, and an outer peripheral surface side turbulator that protrudes from an inner
surface on the outer peripheral surface side of the cooling flow path, and

wherein the hot part further comprises a gas path surface side turbulator that protrudes from an inner surface on the gas
path surface side of the cooling flow path.

US Pat. No. 9,534,613

COMPRESSOR

Mitsubishi Hitachi Power ...

1. A compressor comprising:
stage portions composed of stator blade rows and rotor blade rows; and
an adjusting portion configured to adjust a flow of a compressed air increased in pressure at the stage portions,
wherein the adjusting portion comprises:
outlet side stator blades circumferentially mounted to an inner circumferential surface side of a casing forming an annular
path; and

an inner barrel forming a stationary body supported by the casing, and arranged radially inside of the outlet side stator
blades on the outlet side of a last stage of the stage portions as a partition wall on a radial side of the annular path;

wherein the inner barrel comprises annular grooves formed circumferentially in its outer circumferential surface,
wherein the outlet side stator blades respectively include an outer shroud mounted to an inner circumferential surface of
the casing at a position facing the inner barrel, and an inner shroud supporting a blade portion at an inner diameter side
and facing the inner barrel, the inner shrouds being individually disposed in a space of a corresponding annular groove of
the annular grooves, and each of the inner shrouds being disposed with a given gap between the inner barrel,

wherein the outlet side stator blades are continuously arranged in an axial direction,
wherein the outlet side stator blades, including the outer shroud, the inner shroud and the blade portion, are machined in
a monolithic structure,

wherein a plurality of the outlet side stator blades adjacent circumferentially to each other are monolithically formed as
a stator blade ring segment, and a plurality of the stator blade ring segments are mounted to the casing in the circumferential
direction thereof to form a ring-shaped stator blade ring,

wherein a plurality of stator blade rings are axially arranged at a position located on the outlet side of the last stage
of the stage portions and facing the inner barrel, and

wherein the inner shrouds of all of the plurality of stator blade rings are individually and entirely disposed in the corresponding
annular groove and do not contact the inner barrel.

US Pat. No. 9,482,110

POWER GENERATION SYSTEM AND METHOD OF STOPPING POWER GENERATION SYSTEM

MITSUBISHI HITACHI POWER ...

1. A power generation system comprising:
a gas turbine including a compressor and a combustor;
a fuel cell including an cathode and a anode;
a first compressed oxidant supply line adapted to supply a compressed oxidant compressed by the compressor to the combustor;
a second compressed oxidant supply line adapted to supply a part of the compressed oxidant compressed by the compressor to
the cathode;

a first fuel gas supply line adapted to supply a fuel gas to the combustor;
a second fuel gas supply line adapted to supply a fuel gas to the anode;
a fuel gas recirculation line adapted to return an exhausted fuel gas discharged from the anode to the anode;
a cooler provided in the fuel gas recirculation line; and
a control unit adapted to operate the cooler when the control unit has stopped the fuel cell and has cut the compressor and
the second compressed oxidant supply line, wherein

a reductant supply line adapted to supply a reductant to the anode, and a discharge line adapted to discharge an exhausted
fuel gas discharged from the anode to an outside are provided, and the control unit supplies a predetermined amount of the
reductant to the anode through the reductant supply line and discharges the exhausted fuel gas from the anode to the outside
through a discharged line, at the same time as the control unit causes a fuel cell stop, and

a purge gas supply line adapted to supply a purge gas to the anode is provided, and when the temperature of the fuel cell
is decreased to a predetermined temperature set in advance, the control unit stops supplying the reductant through the reductant
supply line to the fuel cell, and supplies the purge gas through the purge gas supply line to the fuel cell.

US Pat. No. 9,347,666

COMBUSTOR WITH FUEL INJECTOR PEGS FOR REDUCING COMBUSTION PRESSURE OSCILLATIONS

MITSUBISHI HITACHI POWER ...

1. A combustor comprising:
a combustor external cylinder;
a tubular combustor basket installed in the combustor external cylinder;
a compressed air channel defined between an inner circumferential surface of the combustor external cylinder and an outer
circumferential surface of the combustor basket;

a plurality of fuel nozzles installed in the combustor basket, extending approximately in parallel with a central axis of
the combustor basket, and injecting fuel for premixing combustion from at least one thereof; and

an airflow introduction part configured to introduce compressed air flowing in a direction along the compressed air channel
into the plurality of fuel nozzles so that the compressed air is approximately reversed in the flow direction at an end of
the combustor basket, wherein

fuel injection pegs, each of which is made up of an upstream side fuel injection peg injecting upstream side fuel and a downstream
side fuel injection peg provided in the downstream side of the upstream side fuel injection peg and injecting downstream side
fuel, are installed in the compressed air channel, and

concentration fluctuation of the upstream side fuel caused by pressure fluctuation in the combustor is configured so as to
reduce a peak of concentration fluctuation of the downstream side fuel at a combustion start position of the combustor,

wherein, with respect to a direction from the upstream side fuel injection peg to the downstream side fuel injection peg,
the downstream side fuel injection peg forms an acute angle with respect to the combustor external cylinder and an obtuse
angle with respect to the tubular combustor basket.

US Pat. No. 9,291,104

DAMPING DEVICE AND GAS TURBINE COMBUSTOR

MITSUBISHI HITACHI POWER ...

7. A gas turbine combustor comprising:
a combustion cylinder in which high-pressure air and fuel are combusted to generate combustion gas;
a transition piece that is connected to the combustion cylinder and that guides the combustion gas to a turbine;
a high-pressure combustion air supply passage that supplies high-pressure air to be used for combustion to the combustion
cylinder;

a fuel nozzle that injects fuel into high-temperature air in the combustion cylinder; and
a bypass pipe that supplies high-pressure air to the transition piece, wherein the bypass pipe includes the damping device
according to claim 1 and wherein a pipe is the bypass pipe.

US Pat. No. 9,163,840

GAS TURBINE COMBUSTOR AND FUEL SUPPLY METHOD USED FOR THE SAME

Mitsubishi Hitachi Power ...

1. A gas turbine combustor comprising:
a combustion chamber to which fuel and air are supplied;
a first burner located on an upstream side of the combustion chamber, the first burner jetting fuel into the combustion chamber
and jetting air into the combustion chamber in a swirling manner;

a plurality of second burners arranged around the first burner, each of the second burners supplying a premixed gas of air
and fuel to the combustion chamber;

an annular bulkhead disposed between the first burner and the second burners, the annular bulkhead having an inclined surface
formed to broaden toward the downstream side of the combustion chamber; and

a plurality of air jet ports formed in the inclined surface of the annular bulkhead, each of the air jet ports being adapted
to jet air into the combustion chamber, the air jet ports formed between the first burner and the plurality of second burners,
wherein one of the second burners has more of the air jet ports than the remaining second burners;

wherein if the number of the second burners arranged around the first burner is K, the number of the air jet ports provided
is K×n+1 (n=1, 2, 3, . . . ).

US Pat. No. 9,086,078

STATIONARY VANE UNIT OF ROTARY MACHINE, METHOD OF PRODUCING THE SAME, AND METHOD OF CONNECTING THE SAME

MITSUBISHI HITACHI POWER ...

1. A stationary vane unit of a rotary machine in which a plurality of stationary vane members is arranged around a central
axis and outer shrouds formed in outer peripheries of the stationary vane members are continuous in a circumferential direction
so as to be connected to each other, the stationary vane unit comprising:
a first band member that extends in the circumferential direction and is accommodated in a first groove formed in the outer
shrouds of the plurality of stationary vane members on a first side of the outer shrouds in a main axial direction in which
the central axis extends;

a second band member that extends in the circumferential direction and is accommodated in a second groove formed in the outer
shrouds of the plurality of stationary vane members on a second side of the outer shrouds in the main axial direction; and

a fastening member that fastens the first band member and the second band member to each other so that the outer shrouds of
the plurality of stationary vane members are connected to each other and the fastening member penetrates through the first
band member, one of the outer shrouds, and the second band member in the main axial direction.

US Pat. No. 9,810,093

GAS TURBINE AND GAS TURBINE POWER FACILITIES

Mitsubishi Hitachi Power ...

1. A gas turbine comprising:
an air compressor,
a turbine coaxially coupled to the compressor,
a turbine casing accommodating the compressor and the turbine,
a compressor output shaft protruding from the turbine casing towards a side opposite to the turbine,
a turbine output shaft protruding from the turbine casing towards a side opposite to the compressor,
a compressor side mounting section provided at a section of the turbine casing that is near the compressor;
a turbine side mounting section provided at a section of the turbine casing that is near the turbine, and
a rigid structure support member and a flexible structure support member that are used as a pair, wherein:
only one of the compressor output shaft and the turbine output shaft is connected to a rotary device,
the rigid structure support member is mounted to the compressor side mounting section or the turbine side mounting section,
whichever is closer to the rotary device,

the flexible structure support member is mounted to the compressor side mounting section or the turbine side mounting section,
whichever is more distant from the rotary device, and

the rigid structure support member is more rigid than the flexible structure support member.

US Pat. No. 9,689,660

METHOD AND DEVICE FOR MONITORING STATUS OF TURBINE BLADES

Mitsubishi Hitachi Power ...

1. A device for monitoring status of turbine blades, the device comprising:
one or more first sensors mounted so as to be removable from an outer surface of a casing opposed to blade tips;
a second sensor for acquiring a signal from a fixed point on a rotor shaft of the blades;
a section configured to extract data groups from an output signal of the first sensor on the basis of information acquired
by the second sensor;

a section configured to average the data groups;
a section configured to determine thresholds from averaged data obtained under a healthy condition; and
an assessing section configured to compare magnitude of the thresholds and sensor signals obtained during blade status monitoring,
wherein the section configured to determine the thresholds from the averaged data obtained under the healthy condition analyzes
a frequency component of an averaged time-series signal and extracts, as thresholds, signal intensities of frequencies: a
frequency “f1” corresponding to an inverse of a signal interval obtained from the second sensor, a frequency “f2” corresponding to an inverse of a blade-by-blade pulse signal interval of the averaged time-series signal, and a frequency
component between “f1” and “f2”, and

wherein the assessing section configured to compare the magnitude of the thresholds and the sensor signals obtained during
blade status monitoring compares magnitude of signal intensities of the frequencies.

US Pat. No. 9,435,226

GAS TURBINE AND REPAIRING METHOD OF GAS TURBINE

MITSUBISHI HITACHI POWER ...

1. A gas turbine comprising:
a heat-resistant portion surrounding a channel for high-temperature gas from an outer peripheral side;
an annular member formed in an annular shape on the outer peripheral side of the heat-resistant portion; and
a supporting member fitted into a fitting concave portion which has a bottom face facing a downstream side in the high-temperature
gas flow direction along an axis of the annular member, recessed from an axial end face of the annular member along the axis,
and supporting the heat-resistant portion, wherein

the fitting concave portion has a first inclined surface that inclines so as to narrow gradually from an opening edge thereof
toward an upstream side in the high-temperature gas flow direction along the axis, and

the supporting member has a second inclined surface that inclines so as to come into contact with the first inclined surface,
the supporting member comes into contact with the bottom face of the fitting concave portion and is formed in a shape which
fits into the fitting concave portion,

the supporting member is formed so that, when the supporting member is fitted into the fitting concave portion, the axial
end face of the annular member and an axial end face of the supporting member that face the downstream side are located on
the same plane,

a bolt hole with a female thread portion is formed toward the upstream side in the direction of the axis from the bottom face
in the fitting concave portion,

a radial outside portion of the supporting member has a semicircular shape,
a radial inside portion of the supporting member has a rectangular shape in which the longitudinal direction is the radial
direction,

a bolt hole is provided in the supporting member, and
a bolt is inserted into the bolt hole, is screwed into the female thread portion, and fixes the position of the supporting
member.

US Pat. No. 9,435,769

ULTRASONIC TESTING SENSOR AND ULTRASONIC TESTING METHOD

MITSUBISHI HITACHI POWER ...

1. An ultrasonic testing method, comprising the steps of:
calculating a generation angle ?? of a grating lobe;
evaluating, on the basis of a shape of a testing target and positions of a transmission sensor and a reception sensor with
respect to the testing target, whether there exists a reflection source in a grating lobe generation direction;

measuring a reception position of a reflected wave by the reception sensor; and
comparing the reception position of the grating lobe based on the calculated generation angle ?? and the measured reception
position of the reflected wave with each other to evaluate whether the reflected wave is a reflected wave of the grating lobe.

US Pat. No. 9,422,862

COMBINED CYCLE POWER SYSTEM INCLUDING A FUEL CELL AND A GAS TURBINE

MITSUBISHI HITACHI POWER ...

1. A combined cycle power system comprising:
a fuel cell which generates electricity by an electrochemical reaction through an electrolyte upon supply of fuel gas and
air;

a gas turbine which is operated upon supply of discharged fuel and discharged air discharged from the fuel cell after the
generation of electricity;

a fuel gas supply line which includes
a first flow passage that supplies the fuel gas to a fuel electrode of the fuel cell, and
a fuel inlet valve provided in the first flow passage;
a compressed air supply line which includes
a second flow passage that supplies air compressed by a compressor of the gas turbine to an air electrode of the fuel cell,
and

an air inlet valve provided in the second flow passage;
a discharged fuel recirculation line which includes
a third flow passage that connects the fuel electrode and the fuel gas supply line to circulate the discharged fuel, and
a discharged fuel circulation source valve, a booster blower section, and a discharged fuel circulation outlet valve provided
in the third flow passage in order from an upstream side thereof;

a discharged air supply line which includes
a fourth flow passage that supplies the discharged air from the air electrode to a combustor of the gas turbine, and
a discharged air outlet valve provided in the fourth flow passage;
a gas turbine fuel supply line which includes
a fifth flow passage that branches from the discharged fuel recirculation line between the discharged fuel circulation source
valve and the booster blower section to supply a portion of the discharged fuel to the combustor, and

a discharged fuel supply source valve provided in the fifth flow passage;
a discharged fuel atmospheric release line which includes
a sixth flow passage that branches from the discharged fuel recirculation line upstream of the discharged fuel circulation
source valve, and

a discharged fuel release source valve provided in the sixth flow passage;
a discharged air atmospheric release line which includes
a seventh flow passage that branches from the discharged air supply line upstream of the discharged air outlet valve, and
a discharged air release source valve provided in the seventh flow passage; and
a discharged fuel release bypass line which includes
an eighth flow passage that connects the discharged fuel atmospheric release line and the discharged fuel recirculation line
downstream of the discharged fuel release source valve and downstream of the discharged fuel circulation source valve, and

a bypass on-off valve provided in the eighth flow passage.

US Pat. No. 9,416,678

STEAM VALVE

MITSUBISHI HITACHI POWER ...

1. A steam valve comprising:
a casing with a steam flow path formed therein;
a valve body disposed in the steam flow path and provided so as to be capable of moving relative to the steam flow path;
a valve seat portion which is formed in the steam flow path and provided with a valve-seat-side convexly curved surface having
a cross-sectional area gradually increasing toward a downstream side in a flow direction of steam in the steam flow path;
and

a seat portion which is formed in the valve body and has, at a site facing the valve seat portion, a seat-side convexly curved
surface having an outer diameter gradually increasing toward the downstream side from an upstream side in the flow direction
of the steam, wherein

in the seat-side convexly curved surface, an average radius of curvature Rv in the flow direction from a starting end portion
on the upstream side in the flow direction of the steam to a termination end portion on the downstream side in the flow direction
of the steam has a relationship of Rv valve-seat-side convexly curved surface,

the seat-side convexly curved surface is provided with an upstream-side curved surface on the upstream side in the flow direction
of the steam, and a downstream-side curved surface on the downstream side in the flow direction of the steam, the upstream-side
curved surface and the downstream-side curved surface having radii of curvature different from each other,

the downstream-side curved surface has an abutting area abutting the valve seat portion, and
a radius of curvature R1 of the downstream-side curved surface that extends in the flow direction of the steam has a relationship of Rs

US Pat. No. 9,399,939

COMBUSTION EXHAUST GAS TREATMENT SYSTEM AND METHOD OF TREATING COMBUSTION EXHAUST GAS

MITSUBISHI HITACHI POWER ...

14. A method of treating combustion exhaust gas, the method comprising the steps of:
discharging a combustion exhaust gas from a combustion apparatus,
passing the combustion exhaust gas through an air heater,
recovering heat contained in the combustion exhaust gas discharged from the air heater into a heat medium in a heat exchanger
(A),

passing the combustion exhaust gas discharged from the heat exchanger (A) through, in sequence, an electrostatic precipitator,
a wet desulfurization device and a pre-scrubber,

contacting the combustion exhaust gas with an absorbent to absorb CO2 in the combustion exhaust gas into the absorbent to obtain a CO2 removed gas and a CO2 absorbed absorbent,

releasing CO2 from the CO2 absorbed absorbent to obtain a regenerated absorbent,

flash vaporizing the regenerated absorbent to obtain a flash vaporized absorbent,
performing heat exchange between the flash vaporized absorbent and the CO2 absorbed absorbent in a heat exchanger (E), and then

applying the heat recovered by the heat medium to the flash vaporized absorbent in a heat exchanger (C) before performing
heat exchange in the heat exchanger (E).

US Pat. No. 9,370,846

PROCESS FOR PRODUCING COMBUSTOR STRUCTURAL MEMBER, AND COMBUSTOR STRUCTURAL MEMBER, COMBUSTOR FOR GAS TURBINE AND GAS TURBINE

MITSUBISHI HITACHI POWER ...

1. A process for producing a combustor structural member, the process comprising:
brazing a first plate-like member formed from a heat-resistant alloy, and a second plate-like member formed from a heat-resistant
alloy and having a plurality of fins on a surface thereof, with the second plate-like member positioned with the fins facing
the first plate-like member, by interposing a brazing filler metal comprising a melting point lowering element between the
first and second plate-like members, thereby forming a first plate-like assembly,

identifying strain locations in a second plate-like assembly where a strain exceeds a predetermined value after being press-molded
into a desired shape, said second plate-like assembly having been formed by brazing a third plate-like member formed from
the first heat-resistant alloy and having a plurality of fins on surface thereof with the fourth plate-like member positioned
with the fins facing the third plate-like member, by interposing the brazing filler metal comprising the melting point lowering
element between the third and fourth plate-like members, prior to press-molding,

determining the locations within the first plate-like assembly corresponding to the identified strain locations within the
second plate-like assembly,

performing localized heating of the determined locations within the first plate-like assembly, and then
subjecting the first plate-like assembly to cold press molding while maintaining a temperature of the determined locations
subjected to the localized heating at a desired temperature.

US Pat. No. 9,126,272

WELD BEAD CUTTING DEVICE

Mitsubishi Hitachi Power ...

1. A weld bead cutting device for cutting a weld bead formed on a periphery of one end portion of a pin having the one end
portion protruded from a surface of a structure and the other end portion inserted into a hole formed in the structure, comprising:
a cutting unit which cuts the weld bead formed on the periphery of the pin; and
a support unit which supports the cutting unit on an end surface of the one end portion of the pin such that the cutting unit
is movable along the periphery of the pink wherein the support unit includes:

a fitting member configured to be fitted over and locked by the one end portion of the pin; and
a coupling member which is configured to be pivotable with respect to the fitting member and to which the cutting unit is
attached;

a support shaft provided to stand on the end surface of the one end portion of the pin; and
a bearing provided between the coupling member and the fitting member which supports the coupling member such that the coupling
member is pivotable about the support shaft relative to the fitting member.

US Pat. No. 9,074,532

POWER GENERATION PLANT

MITSUBISHI HITACHI POWER ...

5. A method of stopping a power-generation plant including
a gas turbine that combusts fuel gas;
a fuel-gas cooler that cools the fuel gas, which is pressurized at a fuel-gas compressor and recirculated, with coolant sprayed
from a spray nozzle; and

an extraction line that guides the fuel gas extracted from an intermediate stage of the fuel-gas compressor to the fuel-gas
cooler,

the method comprising:
stopping the gas turbine when a level of the coolant accumulated at a bottom portion of the fuel-gas cooler has reached a
predetermined level; and

stopping a coolant pump, which supplies the coolant to the spray nozzle.

US Pat. No. 10,072,528

AXIAL-FLOW EXHAUST TURBINE

MITSUBISHI HITACHI POWER ...

1. An axial-flow exhaust turbine comprising,a steam passage in which rotor blades and stator blades are positioned in rows;
an exhaust chamber for discharging steam from the steam passage in a turbine axial direction, the exhaust chamber being positioned at a downstream side of the steam passage;
a casing including a first casing which defines the steam passage and a second casing which defines the exhaust chamber;
an inner partition wall positioned on an inner circumferential side of the second casing so as to face the exhaust chamber; and
a drain flow channel which is defined between the second casing and the inner partition wall, the drain flow channel being in communication with the steam passage,
wherein the inner partition wall is supported on the second casing so as to be attachable and detachable,
wherein the casing is dividable at a horizontal dividing plane so as to include an upper-half casing and a lower-half casing,
wherein the inner partition wall is dividable at the horizontal dividing plane so as to include an upper-half partition wall and a lower-half partition wall, and
wherein a first key and a second key are fitted into a first key slot and a second key slot at the horizontal dividing plane, respectively, the first key slot being defined over a member on an upper-half casing side and the upper-half partition wall and the second key slot being defined over a member on a lower-half casing side and the lower-half partition wall.

US Pat. No. 9,994,996

RAW-MATERIAL SUPPLY DEVICE AND BIOMASS SEPARATION DEVICE

MITSUBISHI HITACHI POWER ...

7. A biomass decomposition device for decomposing biomass raw material having cellulose, hemicellulose, and lignin, comprising:a hydrothermal decomposition section that transports the powdered raw material supplied by the raw-material supply device described in claim 1 inside a main section from any one side to another by a transport screw, supplies pressurized hot water, the pressurized hot water being treatment water, to an interior of the main section from another side that differs from the supply location of the powdered raw material, and performs hydrothermal decomposition while putting the powdered raw material and the pressurized hot water into opposing contact, transfers a hydrothermal decomposition component into a hydrothermal discharge liquid, the hydrothermal discharge liquid being the pressurized hot water that is discharged, and separates a lignin component and a hemicellulose component from the powdered raw material; and
a biomass discharge section that discharges a solid component from the other side of the main section.
US Pat. No. 9,982,283

SACCHARIDE SOLUTION PRODUCTION SYSTEM, SACCHARIDE SOLUTION PRODUCTION METHOD USING BIOMASS RAW MATERIAL, AND ALCOHOL PRODUCTION METHOD USING BIOMASS RAW MATERIAL

MITSUBISHI HITACHI POWER ...

1. A saccharide solution production system using a biomass raw material, comprising:a biomass supply unit that supplies a biomass raw material containing cellulose, hemicelluloses, and lignin at a pressure ranging from normal pressure to an added pressure;
a hydrothermal decomposition unit that hydrothermally decomposes the biomass raw material by pressurized hot water, and dissolves lignin components and hemicellulose components in the pressurized hot water;
a biomass solid fraction discharge unit that is connected to the hydrothermal decomposition unit and discharges a biomass solid fraction from the hydrothermal decomposition unit;
a pressure vessel including an enzyme supplier and a discharge unit provided in a vicinity of a bottom thereof which is in connection with the biomass solid fraction discharge unit from which the discharged biomass solid fraction is introduced therein, liquefies the biomass solid fraction into biomass slurry containing low molecular weight oligomers with an enzyme supplied from the enzyme supplier under pressurized conditions and discharges the biomass slurry via the discharged unit under pressurized conditions to normal pressure conditions; and
a first saccharification tank that saccharifies the biomass slurry under normal pressure conditions to obtain a first saccharide solution.
US Pat. No. 9,850,511

BIOMASS PROCESSING SYSTEM AND SACCHARIDE-SOLUTION PRODUCTION METHOD USING BIOMASS MATERIAL

MITSUBISHI HITACHI POWER ...

1. A biomass processing system comprising:
a decomposition liquid supply unit that supplies a decomposition liquid for decomposing a biomass material;
a pressurizing gas supply unit that supplies a pressurizing gas for pressurizing an inside of the processing vessel;
a biomass processing unit that decomposes a biomass material containing cellulose, hemicellulose, and lignin under a high
temperature and high pressure condition by a processing vessel having a first gas-liquid interface to remove a lignin component
and a hemicellulose component, so as to obtain a biomass solid, wherein the biomass processing unit comprises:

a biomass material inlet that is provided at a lower side of the processing vessel and introduces the biomass material into
the processing vessel;

a decomposition liquid inlet that is provided at an upper side of the processing vessel and introduces the decomposition liquid
from the decomposition liquid supply unit;

a pressurizing gas inlet that introduces the pressurizing gas into the processing vessel from the pressurizing gas supply
unit; and

a biomass solid outlet that is provided at an upper side of the processing vessel and from which the decomposed biomass material
is discharged as the biomass solid;

a biomass solid discharging unit that is connected to the biomass solid outlet and discharges the biomass solid; and
a slurrying vessel communicating with the biomass solid discharging unit, into which water is injected and the discharged
biomass solid is slurried as a slurried biomass, so as to obtain a second gas-liquid interface of the slurried biomass, wherein
the slurrying vessel comprises:

a biomass solid inlet that communicates with the biomass solid discharging unit and that introduces the biomass solid; and
a slurried biomass outlet from which the slurried biomass is discharged,
wherein the biomass processing unit is configured to provide the first gas-liquid interface between the biomass material inlet
and the biomass solid outlet,

wherein the slurrying vessel is configured to provide the second gas-liquid interface between the biomass solid inlet and
the slurried biomass outlet, and

wherein a liquid seal is provided between the first gas-liquid interface and the second gas-liquid interface to prevent leakage
of the pressurized gas,

wherein the biomass processing system further comprises:
a discharge line that is connected to the slurried biomass outlet to discharge the slurried biomass as a slurried biomass
solid;

a solid-liquid separation device that is connected to the discharge line to separate the slurried biomass solid into a biomass
solid and water, the water containing a reaction inhibiting substance;

a return line that connects the solid-liquid separation device and the slurrying vessel to return the water to the slurrying
vessel;

a biological treatment vessel that is provided in the return line and performs biological treatment on the reaction inhibiting
substance contained in the water to decompose and remove the reaction inhibiting substance from the water;

a saccharification tank that is connected to the solid-liquid separation device to perform enzyme liquefaction on the slurried
biomass solid by adding an enzyme therein and obtain a saccharide solution.

US Pat. No. 9,839,916

WET-TYPE ELECTRIC DUST COLLECTION DEVICE AND DUST REMOVAL METHOD

MITSUBISHI HITACHI POWER ...

3. A dust removal method for removing low-concentration SO3 mist and dust contained in a gas, the dust removal method comprising:
an electrical field formation step of forming, by using a high voltage power source, a DC electrical field between a first
electrode and a second electrode that oppose each other;

a first gas introduction step of guiding the gas, containing the SO3 mist and the dust that are not electrically charged and not having a dielectric sprayed therein, to between the first electrode
and the second electrode in which the DC electrical field is formed;

a first electrical charging step of alternately generating corona discharges, which are reversed in polarity relative to each
other, using the first electrode and the second electrode, in the DC electrical field, and alternately imparting electric
charges of reversed polarity to the SO3 mist and the dust through the corona discharges when the gas flows between the first electrode and the second electrode;

a first collection step of collecting the charged SO3 mist and dust, using the first electrode and the second electrode; and

a concentration acquisition step of acquiring the concentration of the SO3 mist in the gas,

wherein on the basis of the concentration of the SO3 mist acquired in the concentration acquisition step, a first dust removal step including the first gas introduction step,
the first electrical charging step, and the first collection step is carried out when the concentration of the SO3 mist in the gas is equal to or less than a predetermined value which is 10 ppm, and

a second dust removal step is carried out when the concentration of the SO3 mist in the gas is greater than the predetermined value which is 10 ppm, and

wherein the second dust removal step includes:
a preliminary electrical charging step of electrically charging the SO3 mist and the dust in advance;

a spraying step of spraying a dielectric in the gas;
a second gas introduction step of guiding the charged SO3 mist and dust and the dielectric to a location between the first electrode and the second electrode in which the DC electrical
field is formed;

a second electrical charging step of alternately generating the corona discharges of reversed polarity in the DC electrical
field, alternately imparting electric charges of reversed polarity to the SO3 mist and the dust when the gas flows between the first electrode and the second electrode, alternately imparting electric
charges of reversed polarity to the dielectric, and dielectrically polarizing the dielectric;

an adhesion step of adhering the SO3 mist and the dust to the dielectric; and

a second collection step of collecting the SO3 mist, the dust, and the dielectric, using the electrodes.

US Pat. No. 9,650,966

GAS TURBINE WITH AN AIR BLEEDER TUBE

MITSUBISHI HITACHI POWER ...

1. A gas turbine having a compressor, the gas turbine comprising:
an exhaust diffuser;
an exhaust duct connected to a downstream side of the exhaust diffuser; and
an air bleeder tube that guides a portion of compressed air bled from said compressor at a startup timing into the exhaust
duct, wherein an outlet of the air bleeder tube is configured to direct the portion of the compressed air downstream of the
exhaust diffuser,

wherein the compressed air bled from the compressor is discharged into the exhaust duct arranged on the downstream side of
the exhaust diffuser, and connected directly to the exhaust diffuser,

wherein a main flow of combustion gas is not obstructed by an arrangement of said air bleeder tube, and
wherein said air bleeder tube is passed through an inside of a structural element connected to a bearing for supporting a
rotor.

US Pat. No. 9,638,469

CONDENSER, MULTISTAGE PRESSURE CONDENSER PROVIDED THEREWITH, AND REHEATING MODULE USED IN CONDENSER

MITSUBISHI HITACHI POWER ...

1. A condenser, comprising:
a container into which steam flows;
a pressure bulkhead which partitions the inside of the container into an upper space and a lower space and in which a plurality
of bulkhead through-holes are formed;

a heat transfer tube which is disposed in the upper space of the container, and condenses the steam which flows into the upper
space; and

a reheater which is disposed in the lower space of the container, and which heats water which is condensed from the steam
in the upper space of the container and flows into the lower space of the container, by means of high-temperature steam which
flows into the lower space from the outside of the container,

wherein the reheater includes a plurality of partition members which extend vertically in the lower space of the container
and are arranged at intervals from each other, a receiving plate which receives water flowing downward via the plurality of
partition members, and a dam which is connected to an outer peripheral edge of the receiving plate and surrounds the receiving
plate, and

wherein lower ends of the plurality of partition members are below an upper end of the dam.

US Pat. No. 9,505,995

SLAG DISCHARGE SYSTEM, GASIFIER, AND GASIFICATION POWER GENERATION APPARATUS

MITSUBISHI HITACHI POWER ...

1. A slag discharge system comprising:
a gasification furnace which thermally decomposes and gasifies a pulverized raw material composed of a carbonaceous solid;
a water tank which is provided at a bottom portion of the gasification furnace and receives slag produced from the pulverized
raw material and in which cooling water is stored;

a lock hopper which temporarily stores the slag outside of the gasification furnace; and
a slag discharge line which makes the water tank communicate with the lock hopper,
wherein the lock hopper is disposed to the side of the gasification furnace, and
the slag discharge system is provided with a water flow forming apparatus for forming a flow of the cooling water which allows
the slag to be led to the lock hopper in the slag discharge line.

US Pat. No. 9,463,453

METHOD FOR PRODUCING NOX REMOVAL CATALYST FOR HIGH-TEMPERATURE EXHAUST GAS

MITSUBISHI HITACHI POWER ...

1. A method for producing a NOx removal catalyst for high-temperature exhaust gas, comprising:
calcining a mixture comprising ZrO2 and TiO2 with a ZrO2 content ratio of 15% by weight to 55% by weight at 500±15° C. to obtain a composite oxide support;

treating the composite oxide support by immersion in sulfuric acid to produce sulfate ions which are allowed to remain on
the composite oxide support; and

supporting tungsten oxide on the composite oxide support, followed by calcination at 650±15° C. to obtain a powder NOx removal
catalyst for high-temperature exhaust gas,

wherein the obtained NOx removal catalyst for high-temperature exhaust gas secures a solid acid site content of 80.0 ?mol/g
or more at an initial stage, and

wherein the mixture comprising ZrO2 and TiO2 comprises a weight ratio of ZrO2:TiO2 of 85:15.

US Pat. No. 9,347,377

GAS TURBINE AND GAS-TURBINE PLANT HAVING THE SAME

MITSUBISHI HITACHI POWER ...

1. A gas turbine comprising:
a gas-turbine fuel nozzle that includes a plurality of fuel supply channels to which fuel gas is supplied, a plurality of
fuel/sweep-fluid supply channels which are separated from the fuel supply channels and to which one of fuel gas and a sweep
fluid for sweeping the fuel gas is selectively and switchably supplied, and a plurality of injection holes that are provided
at downstream ends of the fuel supply channels and the fuel/sweep-fluid supply channels and that inject the fuel gas or the
sweep fluid guided from the fuel supply channels or the fuel/sweep-fluid supply channels; and

a sweep-fluid supply channel that is connected to the fuel/sweep-fluid supply channels and guides the sweep fluid;
wherein the gas turbine is configured to continuously supply the sweep fluid to the fuel/sweep-fluid supply channels while
the fuel gas is not supplied to the fuel/sweep-fluid supply channels,

the gas turbine further comprising sweep-fluid cooling means for cooling the sweep fluid to a temperature lower than a self-ignition
temperature of the fuel gas.

US Pat. No. 9,249,977

COMBUSTOR WITH ACOUSTIC LINER

MITSUBISHI HITACHI POWER ...

1. A gas turbine combustor comprising:
a combustion chamber inside which a combustion space is formed; and
an acoustic liner that is provided outside the combustion chamber and defines an acoustic space between the acoustic liner
and an outer peripheral surface of the combustion chamber, wherein

through-holes through which the combustion space communicates with the acoustic space are formed in a wall of the combustion
chamber,

a plurality of rows of the through-holes, wherein each row of the plurality of rows of the through-holes includes some of
the through-holes aligned in a circumferential direction of the combustor, the plurality of rows of the through-holes arranged
in a lengthwise direction of the combustor,

the through-holes of a first through-hole row are shifted with respect to the through-holes of a second through-hole row adjacent
to the first through-hole row so that centers of the through-holes of the first and second through-hole rows adjacent each
other are staggered in the circumferential direction of the combustor,

cooling grooves are formed within the wall of the combustion chamber, the cooling grooves being sandwiched between the outer
peripheral surface and an inner peripheral surface of the combustion chamber and corresponds to a position where the acoustic
liner is provided so as to avoid the through-holes, and

the cooling grooves include transverse cooling grooves extending in the circumferential direction of the combustor between
rows of the through-holes, and longitudinal cooling grooves extending in the lengthwise direction of the combustor between
the through-holes and connecting the transverse cooling grooves adjacent to each other in the lengthwise direction of the
combustor.

US Pat. No. 9,234,440

STRUCTURE FOR GAS TURBINE CASING

MITSUBISHI HITACHI POWER ...

1. A gas turbine casing structure comprising:
an upper-half casing;
a lower-half casing;
bolts disposed in bolt installation grooves formed in an inner surface of the upper-half casing and in an inner surface of
the lower-half casing, the bolts bridging between the upper-half casing and the lower-half casing;

upper nuts disposed and attached to the bolts in concave portions formed above the respective bolt installation grooves in
the inner surface of the upper-half casing; and

lower nuts disposed and attached to the bolts in concave portions formed below the respective bolt installation grooves in
the inner surface of the lower-half casing,

wherein a total dimension of the bolt installation groove and the concave portion of the upper-half casing and of the bolt
installation groove and the concave portion of the lower-half casing, in a thickness direction of a flange section of the
upper-half casing and a flange section of the lower-half casing, is smaller than a total dimension of the flange sections,
in the thickness direction of the flange sections.

US Pat. No. 9,212,957

INSTALLATION STRUCTURE FOR TEMPERATURE SENSOR IN ELECTRICAL MACHINERY AND APPARATUS

Mitsubishi Hitachi Power ...

1. An electrical machinery and apparatus comprising:
a rotor having an insulated bar, the insulated bar having strands assembled and a ground wall insulation formed on the outer
periphery of the strands assembled, each of the strands being made up of a rectangular wire and having a strand insulation,
a first wide-width surface facing the inside diameter side of the rotor, a second wide-width surface facing the outside diameter
side of the rotor, and a storage space formed along an extension direction of the strand and being a groove formed on the
first wide-width surface of the strand; and

a temperature sensor that is stored in the storage space, wherein
the groove is formed by removing the strand insulation and the wire at a region on the side of the first wide-width surface
of the strand, such that the temperature sensor directly contacts the wire, and

the strand insulation is formed on the outer periphery of the strands, except for a portion of the outer periphery of the
strands at which the groove is formed.

US Pat. No. 9,121,291

TURBINE BLADE AND GAS TURBINE

MITSUBISHI HITACHI POWER ...

1. A turbine blade comprising:
a platform;
a blade body including at least one cooling flow channel including a meandering serpentine cooling flow channel;
a fillet portion provided in a joint surface between the blade body and the platform; and
a base portion including a supply flow channel communicating with the cooling flow channel of the blade body,
wherein a bypass flow channel is branched off from a high-pressure part of the cooling flow channel and is connected to a
low-pressure part of the cooling flow channel,

wherein the bypass flow channel is provided so as to run along the fillet portion in a rotor axis direction,
wherein the bypass flow channel is formed in a wall of the blade body in sectional view when the blade body is seen from a
leading edge toward a trailing edge of the turbine blade, and

wherein a portion of the wall of the blade body in which the bypass flow channel is formed is surrounded by a fillet upper
end line and a fillet lower end line, the fillet upper end line defining a boundary between an outer wall surface of the blade
body and the fillet portion, and the fillet lower end line defining a boundary between a platform outer surface and the fillet
portion.

US Pat. No. 9,084,965

AIR POLLUTION CONTROL DEVICE AND METHOD FOR REDUCING AMOUNT OF MERCURY IN FLUE GAS

MITSUBISHI HITACHI POWER ...

1. An air pollution control device for reducing amounts of a nitrogen oxide and mercury contained in a flue gas from a boiler,
the device comprising:
a reduction-oxidation auxiliary agent supply unit for spraying in a liquid state a reduction-oxidation auxiliary agent that
produces an oxidizing gas and a reducing gas upon gasification thereof, into a flue gas duct at a downstream of the boiler;

a reduction-denitration unit including a denitration catalyst for reducing a nitrogen oxide in the flue gas with the reducing
gas and for oxidizing mercury under coexistence with the oxidizing gas so as to convert mercury in the flue gas to mercury
oxide; and

a wet desulfurization unit provided downstream of the reduction-denitration unit, for reducing the amount of the mercury oxide
using an alkali absorbent; and

a flowmeter for measuring a flow rate of the flue gas in the flue gas duct between the boiler and the reduction-oxidation
auxiliary agent supply unit, wherein

the reduction-oxidation auxiliary agent supply unit includes:
a reduction-oxidation auxiliary agent supply pipe for supplying the reduction-oxidation auxiliary agent;
a first air supply pipe for supplying a first air for spraying the reduction-oxidation auxiliary agent, the first air supply
pipe being an outer pipe of the reduction-oxidation auxiliary agent supply pipe;

a valve for adjusting a flow rate of the first air so as to adjust size of a droplet of the reduction-oxidation auxiliary
agent;

a second air supply pipe for supplying a second air for dispersing the droplets of the reduction-oxidation auxiliary agent;
and

a spray nozzle for simultaneously jetting the reduction-oxidation auxiliary agent and the first air at tip portions of the
reduction-oxidation auxiliary agent supply pipe and the first air supply pipe,

based on the measured flow rate of the flue gas, a flow rate, a jet angle, an initial velocity of the reduction-oxidation
auxiliary agent jetted from the spray nozzle is adjusted,

the spray nozzle is provided so that a shortest distance x from a nozzle hole of the spray nozzle to an inner wall of the
flue gas duct satisfies the following expression: x>L×sin ? . . . (1), where L is a distance required for gasification of
the droplets of the reduction-oxidation auxiliary agent and obtained from the measured flow rate and a temperature of the
flue gas as well as the initial velocity, the size of the droplet and a temperature of the reduction-oxidation auxiliary agent,
and a is the jet angle.

US Pat. No. 9,903,613

SOLAR HEAT COLLECTION SYSTEM

MITSUBISHI HITACHI POWER ...

1. A solar heat collection system comprising:
a low-temperature heat collection device which heats water by use of sunlight heat to thereby generate steam;
a steam-water separation device which separates a water-steam two-phase fluid generated by the low-temperature heat collection
device into water and steam;

a high-temperature heat collection device which heats the steam separated by the steam-water separation device by use of heat
of sunlight which is reflected by a plurality of heliostats to thereby generate superheated steam; and

a heliostat control device which controls angles of the plurality of heliostats so that a metal temperature of the high-temperature
heat collection device cannot be higher than a threshold temperature which is set in order to prevent overshoot of steam temperature
at an outlet of the high-temperature heat collection device,

wherein the low-temperature heat collection device includes a trough device to collect light and heat in which heat transfer
pipes are disposed above inner circumferential curved surfaces of light collection mirrors each extending in a shape of a
trough so that sunlight can be concentrated on the heat transfer pipes by the light collection mirrors to heat water circulating
in the heat transfer pipes to thereby generate steam, or a Fresnel device to collect light and heat in which a large number
of substantially planar light collection mirrors are arranged side by side and heat transfer pipes are disposed above a group
of light collection mirrors so that sunlight can be concentrated on the heat transfer pipes by the group of light collection
mirrors to heat water circulating in the heat transfer pipes to thereby generate steam;

wherein the high-temperature heat collection device includes a tower device to collect light and heat in which a heat transfer
pipe panel is installed on a tower having a predetermined height so that sunlight can be concentrated on the heat transfer
pipe panel by the plurality of heliostats to heat water circulating in the heat transfer pipe panel to thereby generate steam,
the plurality of heliostats comprising a first heliostat and a second heliostat, the first heliostat being closer to the high-temperature
heat collection device than the second heliostat; and

wherein the heliostat control device adjusts the angles of the heliostats such that an angle of the second heliostat is adjusted
to concentrate the sunlight on the heat transfer pipe panel prior to adjusting an angle of the first heliostat.

US Pat. No. 9,612,013

GAS TURBINE COMBUSTOR

MITSUBISHI HITACHI POWER ...

1. A gas turbine combustor provided with a pilot burner that is provided at the center portion of a combustor main body formed
in a cylindrical shape to form a pilot flame, and a plurality of main burners arranged so as to surround the outer periphery
of the pilot burner to form a premixed flame, wherein
the pilot burner includes a pilot nozzle that supplies pilot fuel, a pilot air channel that is formed around the pilot nozzle
such that pilot air in the pilot air channel flows parallel to the pilot fuel flowing in the pilot nozzle to supply the pilot
air thereto, and an ignition improving part that is provided in the pilot air channel and reduces the size of a low-temperature
air layer of the pilot air, formed between the pilot flame and the premixed flame,

the pilot nozzle includes an injecting hole that injects the pilot fuel into the pilot burner,
the pilot air channel supplies the pilot air to the pilot burner at a location downstream of the injecting hole, and
the ignition improving part is provided in the pilot air channel at an exit of the pilot air channel, and is one or a plurality
of flow-splitting members with a substantially triangular pole-shape provided on an inner peripheral surface of a cylindrical
member of the pilot burner so as to project towards an inside in a radial direction with respect to the inner peripheral surface.

US Pat. No. 9,539,680

AUXILIARY MEMBER FOR ASSEMBLY/DISASSEMBLY OF GAS TURBINE CASING, GAS TURBINE HAVING THE SAME, ASSEMBLY METHOD OF GAS TURBINE CASING, AND DISASSEMBLY METHOD OF GAS TURBINE CASING

MITSUBISHI HITACHI POWER ...

1. An auxiliary member for assembly/disassembly of a gas turbine casing which covers an outer circumference of a rotor which
rotates about a rotational axis and in which a first casing member forming a portion in a circumferential direction of the
gas turbine casing and a second casing member forming the other portion in the circumferential direction of the gas turbine
casing are connected by a fastener, the auxiliary member comprising:
a fixing portion which is fixed to a radial outer surface of a flange of one of the first and second casing members; and
a jack receiving portion which extends from the fixing portion and faces a radial outer surface of a flange of the other of
the first and second casing members.

US Pat. No. 9,488,066

TURBINE VANE OF STEAM TURBINE AND STEAM TURBINE

MITSUBISHI HITACHI POWER ...

1. A turbine vane of a steam turbine comprising:
a vane member that has a space formed therein; and
a plate spring member that is disposed inside the space of the vane member and elastically contacts an inner surface of the
vane member, wherein:

the plate spring member includes a positioning portion which is positioned in the inner surface of the vane member, an elastic
contact portion which elastically contacts the inner surface of the vane member, and a connection portion which connects the
positioning portion to the elastic contact portion,

the elastic contact portion is divided into a plurality of segments in a length direction of the vane member, and
the elastic contact portion of the plate spring member is an area in which the elastic contact portion elastically contacts
the inner surface of the vane member, and the elastic contact area of the elastic contact portion at a center in the length
direction of the vane member is wider than the elastic contact area of the elastic contact portion at both ends in the length
direction of the vane member.

US Pat. No. 9,488,416

MULTISTAGE PRESSURE CONDENSER AND STEAM TURBINE PLANT HAVING THE SAME

MITSUBISHI HITACHI POWER ...

1. multistage pressure condenser comprising:
a plurality of pressure chambers in which pressures are different from one another, the plurality of pressure chambers including:
a high pressure chamber, into which high pressure side steam is introduced and which maintains the high pressure side steam
at a first steam pressure; and

a low pressure chamber, into which low pressure side steam is introduced and which maintains the low pressure side steam at
a second steam pressure which is lower than the first steam pressure;

a pressure partition wall configured to partition an inner portion of the low pressure chamber into an upper portion and a
lower portion and which includes a porous plate in which a plurality of holes are formed;

a cooling pipe group provided at the upper portion of the low pressure chamber partitioned by the pressure partition wall,
the cooling pipe group exchanging heat with the low pressure side steam through cooling water introduced to the cooling pipe
group, thereby condensing the low pressure side steam to low pressure side condensate;

a reheat chamber positioned in the lower portion of the low pressure chamber partitioned by the pressure partition wall, the
reheat chamber storing the low pressure side condensate which flows down through the porous plate;

a steam duct configured to connect the high pressure chamber and the reheat chamber and introduce the high pressure side steam
to the reheat chamber;

a corrugated plate unit positioned under the porous plate, the corrugated plate unit configured to guide the low pressure
side condensate which flows down through the porous plate to the reheat chamber while dispersing the low pressure side condensate
on a surface of the corrugated plate unit;

a vent pipe configured to introduce the high pressure side steam into the corrugated plate unit while promoting the flow of
the high pressure side steam which is introduced through the steam duct; and

a current plate provided to the corrugated plate unit,
wherein the vent pipe penetrates the pressure partition wall, is located further downstream than the corrugated plate unit
in a flow channel direction of the high pressure side steam, and circulates the high pressure side steam to the upper portion
of the low pressure chamber from the reheat chamber, and

wherein the current plate is located further upstream than the corrugated plate unit in the flow channel direction of the
high pressure side steam, straightens the high pressure side steam, and introduces the high pressure side steam into the corrugated
plate unit.

US Pat. No. 9,464,343

NI-BASED CASTING ALLOY AND STEAM TURBINE CASTING PART USING THE SAME

Mitsubishi Hitachi Power ...

1. A steam turbine casting part comprising a Ni-based casting alloy consisting of a composition of, in mass %, 0.001% to 0.1%
C, 15% to 23% Cr, 0% to 11.5% Mo, 3% to 18% W, 5 or less % Fe, 4.9 or less % Co, 0.4 or less % Ti, 0.4 or less % Al, at least
one of Nb and Ta, and the balance being inevitable impurities and Ni, wherein
0.5%?Nb+Ta?4.15% is satisfied, and
7%?Mo+1/2W?13% is satisfied.

US Pat. No. 9,464,809

GAS TURBINE COMBUSTOR AND OPERATING METHOD FOR GAS TURBINE COMBUSTOR

Mitsubishi Hitachi Power ...

1. A gas turbine combustor comprising:
a combustion chamber that burns a fuel and air to generate combustion gases;
a fuel header with a plurality of fueling nozzles disposed thereupon to inject the fuel;
an air injection hole plate with a plurality of air injection holes formed therein to deliver to the combustion chamber the
air along with the fuel injected from the fueling nozzles;

cross fire tubes that each transport the combustion gases to an adjacent combustor and ignite the adjacent combustor during
gas turbine ignition; and

supports for fixing the air injection hole plate to the fuel header,
wherein the supports are provided so as to be at the same phase position as that of the cross fire tubes,
wherein the supports have a width greater than an inside diameter of the cross fire tubes adapted for obstructing air flowing
into the air injection hole plate such that a fuel/air ratio is increased downstream the supports and at the same phase position
of the cross fire tubes.

US Pat. No. 9,447,730

PURGE METHOD AND PURGE UNIT FOR GAS TURBINE COMBUSTOR

MITSUBISHI HITACHI POWER ...

1. A purging method for a gas turbine combustor comprising a nozzle which communicates with an oil fuel line where oil fuel
flows and a gas fuel line where gas fuel flows and for which injection fuel is switched between the oil fuel and the gas fuel,
the method comprising:
a first purge step of purging the oil fuel line by at least water immediately after the injection fuel is switched to the
gas fuel from the oil fuel; and

a second purge step of purging the oil fuel line by at least water immediately before the injection fuel is switched to the
oil fuel from the gas fuel.

US Pat. No. 9,406,965

FUEL CELL MODULE

MITSUBISHI HITACHI POWER ...

1. An oxidant discharge method of a fuel cell for introducing a fuel gas from a fuel supply chamber to an inside of a fuel
cell tube to be discharged to a fuel discharge chamber; introducing an oxidant from an oxidant supply chamber into an power
generating chamber to flow the oxidant upward from below through an outside of the fuel cell tube toward an oxidant discharge
chamber, and then causing the fuel gas and the oxidant to be electrochemically reacted to generate power, the method comprising:
providing, by partitioning an interior of a container in a vertical direction, the fuel supply chamber, the oxidant discharge
chamber, the power generating chamber, the oxidant supply chamber, and the fuel discharge chamber in order, from top to bottom;

opening a plurality of the fuel cell tubes penetrating the power generating chamber in a vertical direction inside the container
such that an upper end of each of the fuel cell tubes is opened in the fuel supply chamber and a lower end of each of the
fuel cell tubes is opened in the fuel discharge chamber; and

forming a discharge passage which is connected with the oxidant discharge chamber communicatively connected to each other,
and passing the oxidant from an introduction hole provided to penetrate a longer side inner wall surface of the discharge
passage to be discharged from a discharge pipe connected to a shorter side outer wall surface,

wherein the oxidant discharge chamber has a substantially rectangular horizontal cross-sectional shape, and
wherein the discharge passage has a box-shaped cross section which is divided by an inner wall surface from the an inner space
of the oxidant discharge chamber, and

wherein the discharge passage is provided along outer periphery four wall surfaces of the oxidant discharge chamber.

US Pat. No. 9,388,701

TURBINE

MITSUBISHI HITACHI POWER ...

11. A turbine comprising:
a blade; and
a structure spaced apart from a tip side of the blade by a space and relatively rotated around a rotation axis of a shaft
body with respect to the blade,

wherein a stepped part having a flat surface and a step surface protruding toward a tip part of the blade is formed at the
structure, and the flat surface and a step surface are formed alternately from an upstream side toward a downstream side of
the structure in a direction of the rotation axis,

a seal fin is provided to the tip part of the blade at a position facing an upstream part of the flat surface, and extends
toward the stepped part, and

a first cavity is formed between the tip part of the blade and the structure and formed between the seal fin and a partition
wall facing toward the seal fin at the upstream side, and

wherein the seal fin comprises:
a space restriction part that extends from the tip part of the blade and has an inner circumference wall surface facing the
flat surface,

a side surface facing toward the upstream side, and
a fin main body part that extends toward the structure from a downstream portion of the inner circumference wall surface in
the direction of the rotation axis and forms a small space between the flat surface,

wherein a second cavity smaller than the first cavity is formed by the flat surface, the space restriction part, and the fin
main body part, in an upstream portion of the fin main body part in the direction of the rotation axis,

wherein the second cavity is formed at the downstream side of the first cavity,
wherein the fin main body part is provided so as to be in one-to-one correspondence with the flat surface, and
wherein a height from the flat surface to the tip part of the blade is larger than a height from the flat surface to the inner
circumference wall surface.

US Pat. No. 9,121,415

LINK MECHANISM, AND VARIABLE TURBINE VANE DRIVING UNIT HAVING THE SAME

MITSUBISHI HITACHI POWER ...

1. A link mechanism configured to rotate a second member around an axis of the second member in connection with movement of
a first member, the link mechanism comprising:
a rotary shaft formed in a cylindrical shape around the axis and having a distal end fixed to the second member and a pin
pushing thread hole recessed from a proximal end of the rotary shaft to the distal end in a direction parallel to the axis;

a link member having a shaft insertion hole which passes in a direction parallel to the axis and through which the proximal
end of the rotary shaft can be inserted;

a detent pin configured to restrict the link member to be relatively non-rotatable around the axis with respect to the proximal
end of the rotary shaft;

a pin support member to which the detent pin is fixed; and
a pushing bolt having a male thread section that can be thread-engaged with the pin pushing thread hole of the rotary shaft,
wherein a pin hole, which is formed from the proximal end of the rotary shaft to the link member, which is recessed toward
the distal end in a direction parallel to the axis, and into which the detent pin can be fitted, is formed at the proximal
end of the rotary shaft and the link member into which the proximal end is inserted,

a pin removing thread hole passing in a direction in which the detent pin fixed to the pin support member extends, and concentric
with the pin pushing thread hole of the rotary shaft when the detent pin is fitted into the pin hole, is formed in the pin
support member, and

a thread major diameter of the pin removing thread hole is larger than a thread major diameter of the male thread section
of the pushing bolt, and smaller than an outer diameter of a bolt head section of the pushing bolt.

US Pat. No. 9,120,648

DISK HOISTING TOOL

MITSUBISHI HITACHI POWER ...

1. A disk hoisting tool which is mounted so as to hoist a compressor disk and/or a turbine disk for mounting blades where
a plurality of fitting grooves for engaging blades that penetrate in a plate thickness direction are circumferentially formed
in a peripheral portion, said disk hoisting tool comprising:
a hoisting body comprising:
an eye plate comprising a through hole penetrating in a plate thickness direction;
a fitting projection formed so as to be fitted with the fitting groove; and
a fixing means that fixes the hoisting body to the disk,
wherein the fixing means comprises:
a first stopper arranged at one end portion of the fitting projection located on one end surface side of the disk to restrain
movement of the hoisting body to the other end surface side of the disk;

a first fixing portion inserted into a hole formed in the one end portion of the fitting projection and a hole formed in the
first stopper to fix the first stopper to the one end portion of the fitting projection;

a second stopper arranged at the other end portion of the fitting projection located on the other end surface side of the
disk to restrain movement of the hoisting body to the one end surface side of the disk; and

a second fixing portion inserted into a hole formed in the other end portion of the fitting projection and a hole formed in
the second stopper to fix the second stopper to the other end portion of the fitting projection,

wherein the fitting projection is a member that has a same shape as a blade root of the blade to be embedded in the fitting
groove.

US Pat. No. 9,109,510

GAS TURBINE ENGINE BEARING SUPPORT STRUT

MITSUBISHI HITACHI POWER ...

1. A gas turbine comprising:
a rotor which rotates around a rotation axis;
an exhaust chamber wall which forms a cylindrical shape around the rotation axis;
an outer diffuser which forms a cylindrical shape around the rotation axis and is provided along an inner periphery of the
exhaust chamber wall;

an inner diffuser which forms a cylindrical shape around the rotation axis, is arranged in an inside of the outer diffuser
in a radial direction, and forms a combustion gas exhaust air channel between the inner diffuser and the outer diffuser;

a bearing housing which is arranged in an inside of the inner diffuser in the radial direction and covers and supports a bearing
which rotatably supports the rotor;

a plurality of struts which is arranged with intervals in a circumferential direction with respect to the rotation axis between
the exhaust chamber wall and the bearing housing, passes through the outer diffuser and the inner diffuser, and connects the
exhaust chamber wall and the bearing housing;

a strut cover which is arranged along the extending direction of the strut, of which one end in the extending direction is
attached to the outer diffuser and the other end is attached to the inner diffuser, and which covers the strut with a space
so that cooling air passes between the strut and the strut cover;

a partitioning wall which is arranged between the inside of the inner diffuser in the radial direction and the outside of
the bearing housing in the radial direction, of which an upstream side portion is sealed between a fixing member which is
fixed to the upstream side of the bearing housing and the partitioning wall, of which a downstream side is sealed between
the inner diffuser and the partitioning wall, and in which a strut through-hole through which the strut passes is formed;
and

a hole seal member which is fixed to the strut through-hole of the partitioning wall so as to be relatively movable in the
extending direction with respect to the strut, and seals a gap between the strut through-hole and the strut.

US Pat. No. 9,103,801

DEVICE FOR DETECTING DEFECT OF TURBINE ROTOR BLADE AND METHOD FOR DETECTING DEFECT OF TURBINE ROTOR BLADE

Mitsubishi Hitachi Power ...

1. A defect detection device for a turbine rotor blade having a turbine rotor blade implanting portion constructed by fitting
a set of rotor grooves formed on a rotor disc portion of a turbine rotor and a set of blade grooves formed on a root portion
of the turbine rotor blade, wherein the turbine rotor is rotatably installed inside a turbine casing, and around an outer
circumference of the turbine rotor, a plurality of turbine rotor blades are annularly arranged, and wherein a stationary blade
diaphragm, where a plurality of stationary blades are annularly arranged adjacent to the turbine rotor blades, is provided
with an annular web in an inner circumference side thereof, and an outer circumference side thereof is fixed with the turbine
casing, comprising:
a movable eddy current probe for inspecting a state of the turbine rotor blade implanting portion, installed in a recess provided
in a side surface of the annular web of the stationary blade diaphragm, facing the turbine rotor blade implanting portion;

a fiber rod provided with a signal line for transmitting a signal detected by the eddy current probe, connected to the eddy
current probe, and set up to be movable through a hole formed in the turbine casing and an air gap formed in the stationary
blade of the stationary blade diaphragm, the fiber rod being a flexible fiber rod and inserted in the air gap formed in the
stationary blade of the stationary blade diaphragm to be bent in a hole in the annular web so as to change a direction of
the fiber rod to axial direction of the turbine rotor, so that the eddy current probe connected to the fiber rod is moved
toward or away from the turbine rotor blade implanting portion; and

a data analyzer for determining a condition of a defect that has occurred in the turbine rotor blade implanting portion based
on the detection signal of the turbine rotor blade implanting portion detected by the eddy current probe transmitted through
the fiber rod;

whereby the turbine rotor blade implanting portion is inspected by the eddy current probe under a condition that the turbine
rotor is rotatably installed inside of the turbine casing.

US Pat. No. 9,598,962

TURBINE ROTOR, MANUFACTURING METHOD THEREOF AND STEAM TURBINE USING TURBINE ROTOR

Mitsubishi Hitachi Power ...

1. A turbine rotor comprising:
a high temperature side rotor base material; and
a low temperature side rotor base material,
the high temperature side rotor base material and the low temperature side rotor base material respectively including concavities
and grooves,

the turbine rotor having an enclosed space section formed by the concavity of the high temperature side rotor base material
and the concavity of the low temperature side rotor base material being disposed opposingly, and a gap formed by the groove
of the high temperature side rotor base material and the groove of the low temperature side rotor base material being disposed
opposingly,

the turbine rotor containing a buildup welding section formed between the high temperature side rotor base material and the
low temperature side rotor base material,

wherein the buildup welding section has the same composition as that of the high temperature side rotor base material or the
low temperature side rotor base material, and has a penetration bead on the enclosed space section side, and the gap contains
a weld metal filled therein; and

wherein a ratio of a thermal conductivity of the high temperature side rotor base material and the low temperature side rotor
base material is in the range of 2/3 to 3/2.

US Pat. No. 9,593,852

COOLING UNIT COOLING SWIRLER VANE OF COMBUSTION BURNER

MITSUBISHI HITACHI POWER ...

1. A combustion burner comprising:
a fuel nozzle;
a burner tube that surrounds the fuel nozzle to form an air passage between the burner tube and the fuel nozzle;
a plurality of swirler vanes being arranged in a plurality of positions in a circumferential direction on an external circumferential
surface of the fuel nozzle, each of which extends along an axial direction of the fuel nozzle, and gradually curves from upstream
to downstream so as to swirl air flowing in the air passage from the upstream to the downstream;

a liquid fuel injecting hole that is formed on the fuel nozzle and is configured to inject a liquid fuel to a vane pressure
surface of each of the plurality of swirler vanes;

a static mixer disposed in the fuel nozzle and configured to mix water and the liquid fuel evenly to prepare a mixed fuel;
and

a cooling unit that is configured to cool a part of the vane pressure surface on which the liquid fuel hits;
wherein the cooling unit injects the mixed fuel from the liquid fuel injecting hole to the vane pressure surface of each of
the plurality of swirler vanes.

US Pat. No. 9,399,188

APPARATUS FOR REMOVING CARBON DIOXIDE IN COMBUSTION EXHAUST GAS

MITSUBISHI HITACHI POWER ...

1. An apparatus for removing carbon dioxide in a combustion exhaust gas, the apparatus comprising:
a decarbonator comprising a contact section for making counterflow contact of the combustion exhaust gas and an amine compound
aqueous solution to remove carbon dioxide from the combustion exhaust gas, a first washing section located downstream of the
CO2-removed combustion exhaust gas from the contact section, and a second washing section located downstream of the washed combustion
exhaust gas from the first washing section;

a desorption column for desorbing CO2 from the amine compound aqueous solution by heating the amine compound aqueous solution
discharged from the decarbonator; and

a first cooler located downstream of the desorbed CO2 discharged from the desorption column to obtain a first reflux water containing a first concentration of the amine compound;
and

a second cooler located downstream of the desorbed CO2 discharged from the first cooler to obtain a second reflux water containing a second concentration of the amine compound;

the first washing section for making counterflow contact of the first reflux water and the CO2-removed combustion exhaust
gas from the contact section;

the second washing section for making counterflow contact of the second reflux water and the CO2-removed combustion exhaust
gas from the first washing section;

a first pipe arranged from the first cooler to the first washing section to send the first reflux water from the first cooler
to the first washing section;

a second pipe arranged from the second cooler to the second washing section to send the second reflux water from the second
cooler to the second washing section; and

a third pipe arranged from the second washing section to the first washing section to send a solution in the second washing
section from the second washing section to the first washing section;

wherein the first concentration is higher than the second concentration.

US Pat. No. 9,366,430

FLARE SYSTEM AND METHOD FOR REDUCING DUST THEREFROM

MITSUBISHI HITACHI POWER ...

1. A flare system that performs an incineration process on processing target gas and emits the processed gas to an atmosphere,
the flare system comprising:
an incineration unit that combusts the processing target gas;
a knock-out drum that is placed upstream of the incineration unit and reduces a flow velocity of the processing target gas
introduced thereto;

a seal drum for backfire prevention placed upstream of the incineration unit;
a gas introducing pipe that introduces the processing target gas into at least one of the knock-out drum and the seal drum;
and

a water film forming unit that is provided inside the gas introducing pipe and forms a water film of spray water in a direction
that intersects with a flow direction of the processing target gas,

wherein the water film formation unit comprises a plurality of nozzles placed along an inner circumferential surface of the
gas introducing pipe so as to form the water film at a plurality of stages in the flow direction of the processing target
gas,

wherein the plurality of nozzles include an upstream side nozzle and a downstream side nozzle relative to the flow direction
of the processing target gas, and

wherein the plurality of nozzles are disposed so that particle size of the jetted spray water is gradually larger from the
upstream side nozzle to the downstream side nozzle.

US Pat. No. 9,062,362

PRECIPITATE HARDENING STAINLESS STEEL AND LONG BLADE USING SAME FOR STEAM TURBINE

Mitsubishi Hitachi Power ...

1. A precipitate hardening stainless steel, which further comprises C at 0.05 mass % or less, N at 0.05 mass % or less, Cr
at 10.0 mass % to 14.0 mass %, Ni at 8.5 mass % to 11.5 mass %, Mo at 0.5 mass % to 3.0 mass %, Ti at 1.5 mass % to 2.0 mass
%, Al at 0.25 mass % to 1.00 mass %, Si at 0.5 mass % or less, Mn at 1.0 mass % or less, and W, wherein the total amount of
Mo and W is equivalent to the amount of Mo in a case in which only Mo is added, and a balance composed of Fe and inevitable
impurities.

US Pat. No. 9,718,715

WATER TREATMENT DEVICE

MITSUBISHI HITACHI POWER ...

1. A water treatment device comprising:
an activated carbon treatment section that receives an inflow of water having a total organic carbon concentration of 100
mg/l or less and adsorbs and removes organic matters contained in the water;

on a downstream side of the activated carbon treatment section, a capacitive de-ionization treatment section including a pair
of electrodes to which voltages having polarities opposite to each other are applied, a flow path that is located between
the electrodes and allows the water to flow therethrough, and an ion exchange membrane that is installed on a flow path side
of each of the electrodes, wherein when the water flows between the electrodes with voltages applied thereto, ions contained
in the water are adsorbed to the electrodes and removed from the water, and voltages reverse to the voltages at a time of
adsorption of the ions are applied to the electrodes to release the ions from the electrodes, whereby the electrodes are regenerated;

organic matter content measurement sections that are installed on an upstream side of the activated carbon treatment section
and between the activated carbon treatment section and the capacitive de-ionization treatment section, and that measure the
total organic carbon concentration in the water; and

a biological treatment section, installed on the upstream side of the activated carbon treatment section, where the organic
matters in the water are decomposed and removed by microorganisms.

US Pat. No. 9,611,886

TILTING PAD BEARING

MITSUBISHI HITACHI POWER ...

1. A tilting pad bearing comprising:
a bearing housing;
a plurality of pads in the bearing housing and which are arranged to be pivotable with respect to the bearing housing;
an oil channel which is formed in each of the pads to cool down at least a rear end part of the pad;
a first nozzle which is formed in each of the pads, which connects with the oil channel, which is open on a rear end surface
of the pad and which supplies a flow of discharging oil to a sliding surface of a next pad at a downstream side; and

a second nozzle which is formed in at least one of the pads, which connects with the oil channel, which is open on a rear
edge part of a sliding surface of the pad and which promotes the flow of discharging oil sideways from the rear edge part
of the sliding surface of the pad.

US Pat. No. 9,574,451

NI-BASED SUPERALLOY, AND TURBINE ROTOR AND STATOR BLADES FOR GAS TURBINE USING THE SAME

Mitsubishi Hitachi Power ...

1. A Ni-based superalloy comprising Cr, Co, Al, Ti, Ta, W, Mo, Nb, C, B, O, N, and inevitable impurities, the balance being
Ni, the Ni-based superalloy having a superalloy composition comprising, by mass, 13.1 to 14.3% of Cr, 13.1 to 18.0% of Co,
2.60 to 3.30% of Al, 4.65 to 5.50% of Ti, 2.70 to 3.30% of Ta, 4.55 to 4.90% of W, 0.10 to 1.10% of Mo, 0.10 to 0.65% of Nb,
0.10 to 0.18% of C, 0.01 to 0.02% of B, 0.001 to 0.005% of 0, and 0.001 to 0.055% of N.

US Pat. No. 9,567,909

INTAKE AIR COOLING SYSTEM

MITSUBISHI HITACHI POWER ...

1. An intake air cooling system for a gas turbine, the system comprising:
an intake duct configured to lead intake air taken in from an intake-air inlet to a compressor of the gas turbine;
a cooling part provided in the intake duct and configured to cool the intake air by heat exchange with a cooling medium which
is introduced from an outside;

a protruding step part formed in a convex shape protruding from a bottom surface of the intake duct disposed on a downstream
side of the cooling part; and

at least one drain hole formed in the bottom surface of the intake duct disposed on the downstream side of the cooling part,
the at least one drain hole being configured to discharge drain water, generated on a surface of the cooling part and dropping
from the surface, to an outside of the intake duct,

wherein the intake duct includes a horizontal duct, a curved duct connected to a downstream side of the horizontal duct and
curved downwardly, and a vertical duct connected to a downstream side of the curved duct, and

wherein the protruding step part is protruding from a bottom surface of the horizontal duct.

US Pat. No. 9,512,731

NI BASED FORGED ALLOY, AND TURBINE DISC, TURBINE SPACER AND GAS TURBINE EACH USING THE SAME

Mitsubishi Hitachi Power ...

2. A turbine spacer including the Ni based forged alloy having a composition containing, on the basis of mass percent:
Al: 0.5 to 1.0%, Cr: 17 to 21%, Fe: 17 to 19%, Nb: 4.5 to 5.5%, Ti: 0.8 to 1.3%, W: 3.0 to 6.0%, B: 0.001 to 0.03%, C: 0.001
to 0.015%, and Mo: 1.0% or less, the balance being Ni and inevitable impurities,

the alloy including carbide grains of the contained elements,
wherein the carbide grains have an average grain diameter of 20 ?m or less; and
the turbine spacer having a mass of 0.25 ton or more.

US Pat. No. 9,476,315

AXIAL FLOW TURBINE

Mitsubishi Hitachi Power ...

1. An axial flow turbine comprising:
a plurality of stator blades provided on the inner circumferential side of a stationary body and circumferentially arranged;
a plurality of rotor blades provided on the outer circumferential side of a rotating body and circumferentially arranged;
a main passage in which the stator blades and the rotor blades on the downstream side of the stator blades are arranged, the
main passage through which working fluid flows;

a shroud provided on the outer circumferential side of the rotor blades;
an annular groove portion formed in the stationary body and housing the shroud therein;
a clearance passage formed between the groove portion and the shroud, wherein a portion of the working fluid flows from the
downstream side of the stator blades in the main passage into the clearance passage and flows out toward the downstream side
of the rotor blades in the main passage;

a plurality of stages of seal fins provided in the clearance passage;
a circulation flow generating chamber defined on the downstream side of the clearance passage; and
a plurality of shielding plates secured to the stationary body in such a manner as to be located in the circulation flow generating
chamber, the shielding plates extending in axial and radial directions of the rotating body, wherein

provided is an annular first projecting portion projecting from a downstream-side lateral surface of the groove portion toward
a downstream-side end face of the shroud, and

the circulation flow generating chamber is defined by a portion of an inner circumferential surface of the groove portion
located on the downstream side of a final stage seal fin of the stages of seal fins, the downstream-side lateral surface of
the groove portion, and an outer circumferential surface of the first projecting portion.

US Pat. No. 9,371,857

TILTING PAD BEARING DEVICE

MITSUBISHI HITACHI POWER ...

1. A tilting-pad bearing device, comprising:
a plurality of bearing pads disposed around a rotation shaft so as to support the rotation shaft rotatably;
a support member interposed between the plurality of bearing pads and a bearing housing supporting the plurality of bearing
pads, the support member supporting each of the plurality of bearing pads pivotably; and

an oil-supply mechanism configured to supply a lubricant oil to at least one oil groove formed on a bearing surface of at
least one of the plurality of bearing pads,

wherein the support member is disposed so as to be offset from a middle position of the at least one bearing pad in a rotational
direction of the rotation shaft, toward an upstream side or a downstream side in the rotational direction of the rotation
shaft, and

wherein a weighted mean position of the at least one oil groove representing a mean position of a respective center position
of the at least one oil groove in a circumferential direction of the rotation shaft weighted by a respective opening area
of the at least one oil groove is offset from an arrangement position of the support member, in an offset direction of the
support member based on the middle position.

US Pat. No. 9,334,745

GAS TURBINE STATOR VANE

Mitsubishi Hitachi Power ...

2. A gas turbine stator vane, comprising:
a vane profile portion including a pressure surface of a shape concaved to a chord line of the vane, and a suction surface
of a shape convexed to the chord line of the vane;

an outer-circumferential end wall positioned at an outer circumferential side of the vane profile portion; and
an inner-circumferential end wall positioned at an inner circumferential side of the vane profile portion; wherein:
an outer surface of the inner-circumferential end wall that is an outer circumferential surface of the inner-circumferential
end wall has an outward convexed shape and an inward convexed shape, at a suction-surface side of the vane profile portion,

a vertex of the outward convexed shape is positioned in a neighborhood of a leading edge of the vane profile portion, and
a vertex of the inward convexed shape is positioned in a neighborhood of an intermediate region between the leading edge of
the vane profile portion and a trailing edge thereof,

an upstream end, in a direction of gas flow, of the outward convexed shape is positioned upstream of the leading edge,
a line segment where radial positions of the outer surface of the inner-circumferential end wall at a cross section perpendicular
to a rotating shaft of a turbine for the gas turbine stator vane are kept a constant value is positioned on the outward convexed
shape of the inner-circumferential end wall outer surface, an area of the outward convexed shape of the inner-circumferential
end wall outer surface in an axial direction of the turbine, starting upstream of the leading edge and ending downstream of
the leading edge, having only the outward convexed shape and no inward convexed shapes, and

a region where the inward convexed shape is formed has an area where the radial positions of the outer surface of the inner-circumferential
end wall at a cross section perpendicular to the rotating shaft of the turbine are not kept a constant value.

US Pat. No. 9,255,494

STEAM TURBINE POWER PLANT

Mitsubishi Hitachi Power ...

1. A steam turbine power plant, comprising:
heat source equipment that heats a low-temperature flow by applying a heat medium and thus generates a high-temperature flow;
a steam generator that generates steam using the high-temperature flow generated by the heat source equipment;
a steam turbine driven by the steam generated by the steam generator;
an electric generator that converts rotational motive power of the steam turbine into electric power;
a controller that controls a load of a plant;
a measuring instrument that measures a physical quantity of the plant;
a predictive value calculating device that calculates a predictive value of a startup constraint of the steam turbine from
a value measured by the measuring instrument;

a first control input variable calculating device that calculates a first control input variable for the controller based
upon the predictive value;

a current value calculating device that calculates a current value of the startup constraint of the steam turbine based upon
the value measured by the measuring instrument;

a second control input variable calculating device that calculates a second control input variable for the controller based
upon the current value; and

a command output device configured so that while preferentially selecting the first control input variable, if the first control
input variable is not calculated, the command output device selects the second control input variable instead, the command
output device being further configured to output an appropriate command value to the controller according to the kind of selected
control input variable.

US Pat. No. 9,091,170

ONE-STAGE STATOR VANE COOLING STRUCTURE AND GAS TURBINE

MITSUBISHI HITACHI POWER ...

1. A one-stage stator vane cooling structure comprising:
a plurality of linking members that are provided between a plurality of combustors disposed in a circumferential direction
of a gas turbine; and

cooling holes that are provided in each one-stage stator vanes to discharge a cooling gas from an inside to an outside of
the one-stage stator vanes in order to cool a stagnation line formed on or near a leading edge of the one-stage stator vanes
by means of stagnation of combustion gas flowing in from the plurality of combustors,

wherein the cooling holes are formed at positions that are determined according to relative positions of the one-stage stator
vanes and the linking members disposed in a vicinity of the one-stage stator vanes,

wherein a pressure surface side of the one-stage stator vanes has a concave surface between the leading edge and a trailing
edge,

wherein the plurality of linking members are arranged with a mutually equal interval in a circumferential direction of the
gas turbine,

wherein the one-stage stator vanes of a number that is an integer multiple of a number of the combustors are arranged with
a mutually equal interval in the circumferential direction of the gas turbine, and

wherein the one-stage stator vanes that are closest in the circumferential direction of the gas turbine to the linking members
are disposed so that a relative position ratio S/P that is a ratio of S to P becomes greater than or equal to ?10% and less
than or equal to +30%, where P and S are as follows:

P: a pitch of a distance between two successive one-stage stator vanes in the circumferential direction of the gas turbine,
and

S: a distance in the circumferential direction of the gas turbine of a center position of the linking member in the circumferential
direction that is in a vicinity with respect to the leading edge of the one-stage stator vane, the distance being a negative
value in a case of the linking member that is in the vicinity shifting to a dorsal side of the one-stage stator vane, and
a positive value in the case of the linking member that is in the vicinity shifting to a ventral side of the one-stage stator
vane.

US Pat. No. 9,085,982

GAS TURBINE

MITSUBISHI HITACHI POWER ...

1. A gas turbine comprising:
a blade ring which faces blades from the outer side in a radial direction perpendicular to a turbine shaft; and
a channel provided in the blade ring and through which a cooling medium is flowed, wherein
the channel includes:
an inner channel formed in the blade ring; and
a tubular outer channel which is connected to the inner channel, is disposed in an outer portion of the blade ring, and extends
in a circumferential direction of the blade ring, and wherein

the outer channel includes:
a plurality of fixing portions fixed to the blade ring;
a thermal stress absorbing portion disposed between the fixing portions adjacent in the circumferential direction and is expandable
in the circumferential direction;

a first outer channel configures a supply system; and
a second outer channel configures a discharge system, which is disposed so as to be adjacent to the first outer channel in
a direction of the turbine shaft.

US Pat. No. 10,174,281

BIOMASS TREATMENT SYSTEM

MITSUBISHI HITACHI POWER ...

1. A biomass treatment system comprising:a biomass treatment section comprising a treatment column having a gas-liquid interface configured to decompose a biomass raw material containing cellulose, hemicellulose, and lignin under high-temperature, and high-pressure conditions, and thus removing a lignin component and a hemicellulose component from the biomass;
a biomass solid discharge section configured to discharge a biomass solid treated by the biomass treatment section;
a slurrying tank that is connected to the biomass solid discharge section, the slurrying tank configured to pour water into the biomass solid discharge section and to slurry the discharged biomass solid;
a solid-liquid separation apparatus including a settling tank configured to settle the biomass solid, the settling tank being provided downstream of the slurrying tank, and a screw conveyor or a belt conveyor, a bottom of which is disposed on a lower side of a bottom of the settling tank and is connected thereto via a connecting section and is inclinedly provided from a bottom to a top end thereof, and which is configured to scoop up a biomass sediment conveyed from the bottom of the settling tank from the bottom of the screw conveyor or the belt conveyor toward a top end thereof and separate water and discharge a thus obtained concentrated biomass slurry from the top end thereof via a discharge port;
a water receiving tank configured to receive water overflown from the settling tank;
a line connected between the settling tank and the water receiving tank and configured to transfer the water overflow from the settling tank to the water receiving tank; and
a return line that is connected between the water receiving tank and the slurrying tank and is configured to return the water from the water receiving tank to the slurrying tank;
wherein the screw conveyor or the belt conveyor includes a blowing line provided on the bottom thereof, the blowing line configured to discharge biomass accumulated outside of the system to prevent from clogging.

US Pat. No. 10,151,241

SEALING MECHANISM FOR A REGENERATIVE GAS TURBINE COMBUSTOR

Mitsubishi Hitachi Power ...

1. A regenerative gas turbine combustor, comprising:a combustor inner cylinder internally defining a combustion chamber;
a tail cylinder connecting the combustor inner cylinder with a turbine;
a combustor outer cylinder surrounding the combustor inner cylinder and the tail cylinder;
a fuel nozzle for supplying fuel to the combustion chamber;
a bleeding port provided in the combustor outer cylinder;
a regenerator for preheating, by using the exhaust gas from the turbine, compressed air bled from the bleeding port;
an injection port for injecting the compressed air bled preheated by the regenerator into the inside of the combustor outer cylinder;
a division wall for blocking a compressed-air passage located between the combustor inner cylinder and the tail cylinder, and the combustor outer cylinder, at a position between the bleeding port and the injection port; and
a sealing mechanism for sealing a clearance between the tail cylinder or the combustor inner cylinder and the division wall;
wherein the sealing mechanism includes a plurality of seal rings, a holder installed on an inner circumferential portion of the division wall and having a ring groove for holding the plurality of seal rings, and a gap provided between an inner circumferential surface of the ring groove and an outer circumferential surface of the plurality of seal rings;
wherein the plurality of seal rings are in contact with an outer circumferential surface of the tail cylinder and each has one cut at a circumferential position thereof;
wherein the plurality of seal rings are provided in the axial direction of the tail cylinder and the cut positions of the plurality of seal rings adjacent to each other are offset from each other;
wherein the holder includes a holder body having a front wall portion whose section extends in a radial direction of the tail cylinder and an outer circumferential wall portion which extends from an outer circumferential portion of the front wall portion toward a downstream side, a spacer interposed between the plurality of seal rings adjacent to each other and defining the ring groove, and a pressing force adjusting mechanism for adjusting the pressing force of the plurality of seal rings and the spacer against the holder body; and
wherein the pressing force adjusting mechanism includes a bracket which is secured to the downstream end of the outer circumferential wall portion, a pressing ring which sandwiches a plurality of seal rings having the spacer interposed therebetween in cooperation with the front wall portion, and a pressing force adjusting bolt that threadedly engages with the bracket so as to adjust a pressing force of the plurality of seal rings and the spacer against the holder body via the pressing ring.

US Pat. No. 9,856,795

GAS TURBINE SYSTEM, CONTROLLER, AND GAS TURBINE OPERATION METHOD

MITSUBISHI HITACHI POWER ...

6. A gas turbine operation method for a gas turbine having a compressor, a combustor, and a turbine, a fuel supply mechanism
for supplying fuel to the combustor, and a composition detection unit for detecting a composition of the fuel, the method
comprising the steps of:
calculating a specific heat ratio of a combustion gas from the composition of the fuel detected by the composition detection
unit;

correcting a function of an exhaust temperature of the combustion gas passing through the turbine and either air pressure
of air expelled from the compressor to the combustor or an expansion ratio of the turbine, which is determined beforehand,
based on the specific heat ratio; and

controlling the fuel supplied from the fuel supply mechanism to the combustor based on the function corrected previously.

US Pat. No. 9,650,961

GAS TURBINE COMBUSTOR INCLUDING BURNER HAVING PLURAL GASEOUS FUEL MANIFOLDS

Mitsubishi Hitachi Power ...

4. A gas turbine combustor that mixes and combusts combustion air introduced from a compressor and gaseous fuel, and supplies
produced combustion gas to a gas turbine,
the gas turbine combustor comprising:
an inner tube to produce combustion gas by combusting the combustion air and the gaseous fuel;
an outer tube enclosing the inner tube;
an end cover located upstream of the outer tube; and
a burner secured to the end cover and installed in the inner tube,
the burner including:
a plurality of gaseous fuel nozzles to inject gaseous fuel;
a first manifold to distribute gaseous fuel to the plurality of gaseous fuel nozzles;
a burner flange to secure the burner to the end cover;
a burner body to connect the first manifold and the burner flange,
an annular second manifold provided in the burner flange, the annular second manifold having a single inlet for fuel inflow
and a single outlet for fuel outflow, and

an annular third manifold provided in the end cover, the annular third manifold having a single inlet for fuel inflow and
a single outlet for fuel outflow,

wherein gaseous fuel passages are provided to flow gaseous fuel through the end cover, the burner flange, and the burner body,
the gaseous fuel passages including a first gaseous fuel passage provided in the burner body, a second fuel passage provided
in the burner flange and a third fuel passage provided in the end cover, an inlet of the first gaseous fuel passage communicating
with an outlet of the second fuel passage, an inlet of the second fuel passage communicating with an outlet of the third fuel
passage, an outlet of the first gaseous fuel passage communicating with the first manifold,

the second fuel passage includes an inlet side second fuel passage and an outlet side second fuel passage,
the third fuel passage includes an inlet side third fuel passage and an outlet side third fuel passage,
the inlet side second fuel passage provides fluid communication between an outlet of the outlet side third fuel passage and
the single inlet for fuel inflow of the annular second manifold,

the outlet side second fuel passage provides fluid communication between the single outlet for fuel outflow of the annular
second manifold and the inlet of the first gaseous fuel passage,

an outlet of the inlet side third fuel passage communicates with the single inlet for fuel inflow of the annular third manifold,
the outlet side third fuel passage provides fluid communication between the single outlet for fuel outflow of the annular
third manifold and an inlet of the inlet side second fuel passage, and

at least one of the second manifold and the third manifold is configured so that the single inlet for fuel inflow of the at
least one of the second manifold and the third manifold and the single outlet for fuel outflow are disposed at opposite circumferential
positions within the burner.

US Pat. No. 9,540,577

MERCURY REMOVAL SYSTEM, GASIFICATION SYSTEM, GASIFICATION COMBINED POWER GENERATION SYSTEM AND MERCURY REMOVAL METHOD

MITSUBISHI HITACHI POWER ...

1. A mercury removal system provided in a powder supply system including a pulverizing machine that pulverizes a hydrocarbon
raw material along with a dry gas supplied from the outside so as to become a powder raw material, the mercury removal system
comprising:
a removal agent supply device which supplies a mercury removal agent for removing mercury contained in a dry flue gas discharged
from the pulverizing machine; and

a mercury removal agent dust collector which collects the dust of the mercury removal agent so as to be separated into the
mercury removal agent and a pure gas,

wherein a gas discharge line to which the dry flue gas is supplied is connected to the mercury removal agent dust collector,
wherein the removal agent supply device includes a mercury removal agent supply line which supplies the mercury removal agent,
and

wherein the mercury removal agent supply line is connected to the upstream side of the mercury removal agent dust collector
in the circulation direction of the dry flue gas.

US Pat. No. 9,249,973

MOISTURE SEPARATOR AND REHEATER

MITSUBISHI HITACHI POWER ...

1. A moisture separator and reheater comprising:
a cylindrical casing extending in a horizontal axial direction, with opposite ends in the axial direction being sealed; and
a heat exchanger tube group that heats steam entering into said casing, wherein
a steam receiving port for receiving steam from outside is formed in a lower part of said casing, and a steam discharge port
for discharging steam to outside is formed in an upper part of said casing,

inside said casing there are formed:
a steam receiving chamber into which steam flowing in from said steam receiving port enters;
a supply manifold chamber communicating with said steam receiving chamber and adjacent to said steam receiving chamber in
the axial direction;

a moisture separating chamber communicating with said supply manifold chamber and adjacent to a lower part of said supply
manifold chamber for separating moisture from steam;

a heating chamber communicating with said moisture separating chamber, adjacent to said steam receiving chamber in the axial
direction, and housing said heat exchanger tube group; and

a collection manifold chamber communicating with said heating chamber and said steam discharge port and adjacent to said heating
chamber and an upper part of said steam receiving chamber, wherein

said steam receiving chamber, said heating chamber and said collection manifold chamber are separated by a transverse partition
panel, a shroud and a ceiling panel,

said transverse partition panel extends in a vertical direction, said heat exchanger tube group penetrates said transverse
partition panel in the axial direction, and said transverse partition panel is disposed between said steam receiving chamber
and said heating chamber,

said shroud covers said end of said heat exchanger tube group penetrating said transverse partition panel,
said ceiling panel is bonded to said transverse partition panel, and is disposed between said steam receiving chamber and
said collection manifold chamber,

in said steam receiving chamber, a reinforcing panel is bonded to said shroud or is integrally formed with a part of said
shroud,

said reinforcing panel includes a stress diffusion part for dispersing a force applied by a pressure difference between said
steam receiving chamber and said collection manifold chamber,

said stress diffusion part is bonded to a corner where said ceiling panel and said transverse partition panel come into contact
with each other,

said shroud has a side shroud,
said reinforcing panel is bonded to said side shroud or integrally formed with said side shroud,
an edge of said reinforcing panel is located on a side of said reinforcing panel opposite to said transverse partition panel,
said edge having a circular arc shape depressed toward said transverse partition panel, and

an arc center of the circular arc shape of said reinforcing panel is positioned closer to said transverse partition panel
than a remote position farthest from said transverse partition panel in said shroud to which said reinforcing panel is bonded.

US Pat. No. 9,132,391

AIR POLLUTION CONTROL DEVICE

MITSUBISHI HITACHI POWER ...

1. An air pollution control device for reducing amounts of a nitrogen oxide and mercury contained in a flue gas from a boiler,
the device comprising:
a reduction-oxidation auxiliary agent supply unit having a spray nozzle for spraying in a liquid state a reduction-oxidation
auxiliary agent that produces an oxidizing gas and a reducing gas upon gasification thereof into a flue gas duct at a downstream
of the boiler;

a mixing unit provided on a downstream side of a region where the reduction-oxidation auxiliary agent is gasified, for promoting
mixing of the oxidizing gas and the reducing gas, which are produced upon the gasification of the reduction-oxidation auxiliary
agent, with the flue gas;

a reduction-denitration unit including a denitration catalyst for reducing a nitrogen oxide in the flue gas with the reducing
gas and for oxidizing mercury under coexistence with the oxidizing gas;

a wet desulfurization unit for reducing the amount of mercury oxidized in the reduction-denitration unit using an alkali absorbent,
mixing promoting auxiliary members including a plurality of guide vanes connected to each other provided upstream of the reduction-denitration
unit and downstream of the mixing unit, for promoting the mixing of the oxidizing gas and the reducing gas into the flue gas,
the mixing promoting auxiliary members comprising a plurality of plate-shaped members extending in a direction perpendicular
to ribs, the ribs extending between the plurality of guide vanes for disturbing the gas flow of the flue gas, and

a current plate for equalizing a gas flow of the flue gas provided upstream of the reduction-denitration unit and downstream
of the plurality of guide vanes,

wherein the mixing unit is a spreading and swirling plate provided peripherally in the flue gas duct and formed in a flat
plate shape on an upstream side in a gas flow of the flue gas in the flue gas duct and formed in a corrugated shape toward
a downstream side in the gas flow of the flue gas, and

the spreading and swirling plate is formed in such a way that an amplitude of the corrugated shape is increased toward the
downstream side in the gas flow of the flue gas.

US Pat. No. 10,145,248

STEAM TURBINE

Mitsubishi Hitachi Power ...

1. A stationary blade for a steam turbine, comprising:a main unit portion made of a plastic-formed metal plate having a hollow blade structure; and
a blade tail section including a blade trailing edge, the blade tail section is joined to the main unit portion; wherein
the main unit portion has a protrusion formed of a portion of the metal plate on a suction-side surface of the main unit portion that extends towards the blade trailing edge;
the blade tail section has a pressure-side surface and a suction side surface;
the blade tail section has an upper portion and a lower portion;
the blade tail section has a recess formed in the upper portion of the suction-side surface of the blade tail section;
the blade tail section has a slit leading from the pressure-side surface of the blade tail section to the recess; and
the recess is covered by the protrusion of the main unit portion.

US Pat. No. 10,065,375

ADDITIVE MANUFACTURING SYSTEM, MODELING-DATA PROVIDING APPARATUS AND PROVIDING METHOD

MITSUBISHI HITACHI POWER ...

1. An additive manufacturing system, comprising:an additive manufacturing apparatus configured to manufacture a 3D object by laminating a modeling material; and
a modeling-data providing apparatus configured to provide modeling data to the additive manufacturing apparatus,
wherein the modeling-data providing apparatus comprises:
a dividing unit configured to divide the modeling data corresponding to the 3D object into n packets of transmission data, where n is a positive integer equal to or greater than two;
a data transmitting unit configured to transmit the n packets of the transmission data to the additive manufacturing apparatus in series; and
a deletion-signal receiving unit configured to receive a deletion signal indicating deletion of the transmission data from the additive manufacturing apparatus, each time a packet of the transmission data sent by the data transmitting unit is deleted from the additive manufacturing apparatus,
wherein the additive manufacturing apparatus comprises:
a data receiving unit for receiving each packet of the transmission data transmitted from the data transmitting unit;
a modeling unit configured to perform a modeling process on the basis of each packet of the transmission data received by the data receiving unit;
a data deleting unit configured to delete each packet of the transmission data each time the modeling unit performs the modeling process on the basis of a packet of the transmission data; and
a deletion-signal transmitting unit configured to transmit the deletion signal indicating deletion of a packet of the transmission data to the deletion-signal receiving unit each time the data deleting unit deletes a packet of the transmission data, and
wherein the data transmitting unit is configured to confirm receipt, by the deletion-signal receiving unit, of the deletion signal indicating deletion of an ith packet of the n packets of the transmission data, and subsequently transmit an i+1th packet of the n packets of the transmission data to the additive manufacturing apparatus, where i is a positive integer less than n,
wherein the dividing unit is configured to divide the modeling data according to a division limiting condition due to at least one of shape, size, or material of the 3D object,
wherein the dividing unit is configured to divide the modeling data according to the division limiting condition even within a single layer of the modeling material to be laminated, and
wherein the dividing unit is configured to set a boundary plane for division along a longitudinal direction of the layer and a main scanning direction of the modeling unit is set along a longitudinal direction of the layer, in a case where the dividing unit divides the modeling data within a single layer of the modeling material to be laminated.