US Pat. No. 9,255,573

TESTING APPARATUS FOR AN OUTER HOUSING OF A PUMP AND METHOD FOR THE TESTING OF AN OUTER HOUSING OF A PUMP

SULZER MANAGEMENT AG, Wi...

1. A testing apparatus for an outer housing (3) of a pump, wherein the outer housing (3) has an outlet (4), and the testing apparatus (1) includes
a separation element (2);

a first and a second closure element (91, 92), wherein the first and second closure elements (91, 92) respectively close an axial end of the outer housing (3) in a sealing manner;

a middle pressure line (71, 72) which is arranged in the first or the second closure element (91, 92); and

a bounding element (8), wherein the bounding element (8) closes the outlet (4) outside of the outer housing (3) and wherein a high pressure line (81, 82) is arranged in the bounding element (8), and

the separation element (2) is configured and arranged in the outer housing (3) such that the separation element (2) bounds the outlet (4) of the outer housing (3) and the outer housing (3) is divided into a first pressure region (5) and a second pressure region (6), wherein the first pressure region (5) and the second pressure region (6) are configured as pressure regions independent from one another.

US Pat. No. 9,188,134

FLOW MACHINE FOR A FLUID HAVING A RADIAL SEALING GAP AND A STATIONARY WEAR RING

Sulzer Management AG, Wi...

1. A flow machine for a fluid having a radial sealing gap which is formed between stator parts and a closed impeller, wherein
the flow machine is designed for an operating pressure of more than 240 bar, with at least one wear ring arranged in a stationary
manner being provided at the sealing gap and having an inner side facing the impeller, an outer side and two axially spaced
apart side surfaces, characterized in that a concentrically extending recess is formed in the wear ring in the form of a radial
gap or of a radial incision; in that the recess, starting from one of the side surfaces, extends in the axial direction over
more than a fifth of the axial length of the wear ring; and in that the wear ring is produced from metal, hard metal or ceramic
material, wherein the outer side of the wear ring is connected on the one side directly to the stator part and a radial gap
whose axial length is larger than a fourth or larger than a third of the axial length of the wear ring is formed on the other
side of the wear ring in the axial direction between it and the stator part.

US Pat. No. 9,182,001

APPARATUS AND METHOD FOR THE VIBRATION CONTROL OF A RISING PIPE OF A VERTICAL PUMP

Sulzer Management AG, Wi...

1. An apparatus for the vibration control of a rising pipe of a vertical pump, wherein the rising pipe is excited to vibrations
in operation and wherein the rising pipe has a longitudinal direction, wherein the apparatus is configured to be fastened
outwardly at the rising pipe; wherein the apparatus comprises:
a vibration element; and
three or more spring elements, wherein the spring elements are resilient bars which are oriented substantially parallel to
the longitudinal direction of the rising pipe in operation,

wherein a first end of each bar is attached to the vibration element, wherein the first ends of the three or more spring elements
define a polygon disposed in a plane perpendicular to the longitudinal direction of the rising pipe,

wherein a second end of each bar is configured to be attached to a holder, the holder being configured to fasten the apparatus
to the rising pipe, such that, when the second ends of the bars are attached to the holder, the vibration element is elastically
connected to the holder,

wherein each of the spring elements is further configured to guide the vibration element with respect to the holder;
wherein the vibration element comprises an opening configured to surround the rising pipe, wherein the vibration element is
held by the first ends of the spring elements; and wherein the vibration element is guided by the spring elements such that
movements of the vibration element with respect to the holder are substantially restricted to movements in the plane perpendicular
to the longitudinal direction of the rising pipe.

US Pat. No. 9,234,529

HELICO-AXIAL PUMP, ROTOR FOR A HELICO-AXIAL PUMP AS WELL AS METHOD FOR JOURNALLING A ROTOR IN A HELICO-AXIAL PUMP

SULZER MANAGEMENT AG, Wi...

1. A helico-axial pump for conveying a multiphase mixture, which helico-axial pump includes a rotor rotatably journalled about
a longitudinal axis in a pump housing and having a first part rotor and a second part rotor, wherein the first part rotor
and the second part rotor include a compression stage having a helico-axial impeller and a stator for the compression of the
multiphase mixture, and wherein a hydrodynamic stabilization bush having a stabilization surface is provided and formed between
the first part rotor and the second part rotor such that a stabilization gap is formed before the stabilization surface so
that a hydrodynamic stabilization layer can be formed from a stabilization medium in the stabilization gap in the operating
state.

US Pat. No. 10,082,154

INTAKE CHANNEL ARRANGEMENT FOR A VOLUTE CASING OF A CENTRIFUGAL PUMP, A FLANGE MEMBER, A VOLUTE CASING FOR A CENTRIFUGAL PUMP AND A CENTRIFUGAL PUMP

SULZER MANAGEMENT AG, Wi...

1. An intake channel arrangement for a volute casing of a centrifugal pump, comprising:an intake channel comprising
a first end with a first inner diameter, and a second end with a second inner diameter, the second inner diameter being smaller than the first inner diameter,
a cross-sectional flow area and an adapter section arranged between the first end and the second end,
a first channel portion with a surface and the first inner diameter,
an annular convex curvature surface joining at an angle to the surface of the first channel portion, the angle being in a range of 90° -110° between the surface of the first channel portion and a tangent of the convex curvature surface having a tangent point in an intersection of the surface of the first channel portion and the convex curvature surface, the annular convex curvature surface reducing the cross-sectional flow area from the first inner diameter to the second inner diameter and the first inner diameter being chosen to correspond to a first predetermined inner diameter greater than the second diameter.

US Pat. No. 9,482,345

SEALING ARRANGEMENT FOR A ROTATING SHAFT

Sulzer Management AG, Wi...

1. A sealing system for sealing a rotating shaft projecting through a sealing chamber, comprising:
a mechanical seal arrangement, wherein a barrier fluid at a barrier fluid pressure flows through the mechanical seal arrangement;
a barrier fluid pressure device which has a pressure piston which is displaceable in a cylinder and by means of which the
barrier fluid pressure is set; and

a position indicator which is arranged outside the cylinder of the barrier fluid pressure device and is connected to the piston
rod,

wherein
the position indicator is arranged at a spring retainer plate connected to the piston rod;
the cylinder has a cylinder end cover and is divided by the pressure piston into a sealing fluid space in which a sealing
fluid pressure acts and into a barrier fluid space which is flowed through by the barrier fluid;

the barrier fluid space is connected to the mechanical seal arrangement via a feed line for introducing the barrier fluid
into the mechanical seal arrangement and a lead-off line for discharging the barrier fluid from the mechanical seal arrangement;

the barrier fluid pressure is greater than the sealing fluid pressure of a sealing fluid acting in the sealing chamber;
the sealing fluid pressure and an additional force act on the pressure piston of the barrier fluid pressure device for setting
the barrier fluid pressure; and

the additional force acts on the pressure piston via a piston rod connected to the pressure piston,
wherein
the cylinder end cover has a passage and the piston rod projects through the barrier fluid space and the passage of the cylinder
end cover and thus projects out of the cylinder.

US Pat. No. 10,066,636

AXIALLY SPLIT PUMP

SULZER MANAGEMENT AG, Wi...

1. An axially split pump for conveying a fluid, comprising:an axially split housing comprising a bottom part and a cover, the bottom part has a first sealing surface and the cover has a second sealing surface, the bottom part and the cover configured to be fastened to one another so that the first and second sealing surfaces are in direct contact with one another, at least one first sealing groove disposed in at least one of the first and second sealing surfaces for the reception of a first sealing element, and at least one second sealing groove disposed for the reception of a second sealing element, the first sealing groove and the second sealing groove being connected to one another through a connection region, an elastic pre-loading element being disposed in the connection region, the pre-loading element configured to exert a pre-load onto one of the first and second sealing elements.

US Pat. No. 9,273,699

HELICO-AXIAL PUMP, A ROTOR FOR A HELICO-AXIAL PUMP, METHOD FOR THE HYDRODYNAMIC JOURNALLING OF A ROTOR OF A HELICO-AXIAL PUMP, AS WELL AS A HYBRID PUMP WITH A ROTOR FOR A HELICO-AXIAL PUMP

Sulzer Management AG, Wi...

1. A helico-axial pump for pumping a multi-phase mixture, said helico-axial pump comprising:
a pump housing;
a rotor rotatably journalled in the pump housing about a longitudinal axis, wherein the rotor includes a compression stage
having a helico-axial impeller;

a stator for the compression of the multi-phase mixture; and
a hydrodynamic stabilization element having a stabilization surface, disposed in the pump housing in such a way that a stabilization
gap is formed upstream of the stabilization surface, so that in the operating state a hydrodynamic stabilization layer made
of a stabilization medium can be formed in the stabilization gap.

US Pat. No. 9,663,897

METHOD OF AND AN ARRANGEMENT FOR INTRODUCING PROCESS LIQUID FROM A TREATMENT STEP TO A WASHING AND/OR FILTERING APPARATUS

SULZER MANAGEMENT AG, Wi...

1. A method of introducing pulp or fiber suspension of pulp and paper industry from a treatment step to a washing or filtering
apparatus having at least one inlet for receiving the pulp or fiber suspension of pulp and paper industry, the method comprising:
discharging pulp or fiber suspension of pulp and paper industry from the treatment step to a gas separator;
separating gas from the pulp or fiber suspension of pulp and paper industry;
introducing the pulp or fiber suspension of pulp and paper industry to the washing or filtering apparatus,
performing the separation of gas from the pulp or fiber suspension of pulp and paper industry at a level of the at least one
inlet; and

controlling the feed pressure of the washing or filtering apparatus by a valve arranged in connection with the gas separator.

US Pat. No. 9,416,491

METHOD OF AND AN ARRANGEMENT FOR TRANSFERRING A PROCESS LIQUID, AN INDUSTRIAL FACILITY AND A METHOD OF SIMPLIFYING THE LAYOUT OF SUCH

Sulzer Management AG, Wi...

1. A method of transferring a fiber suspension from a washing and thickening device to a subsequent process stage, the method
comprising the steps of:
discharging the fiber suspension in a consistency of 20-50% from a washing and thickening device,
taking the fiber suspension to a stand pipe,
diluting the fiber suspension to a second consistency, i.e. to a MC-consistency,
providing the stand pipe with means for measuring the surface level of the fiber suspension in the stand pipe, the measuring
means having a surface level control range with an upper surface level control limit, and a lower surface level control limit
for maintaining, when in use, the surface level of the fiber suspension between the upper and the lower surface level control
limits,

discharging the fiber suspension in the second consistency from said stand pipe by means of a pump arranged in flow communication
with a discharge outlet opening provided in the stand pipe,

characterized by the further step of
providing the fiber suspension in the surface level control range in the stand pipe with an average consistency, i.e. a third
consistency, the third consistency being at least 1.5 times the second consistency.

US Pat. No. 9,174,180

AGITATOR AND A METHOD OF REPLACING A SHAFT SEAL OF AN AGITATOR

SULZER MANAGEMENT AG, Wi...

1. An agitator comprising
a) a drive unit (2) coupled by means of a coupling (16) to a first end of a second drive shaft (18),

b) a propeller (8) attached to a second end of the second drive shaft (18),

c) the drive unit (2) being attached to a mounting flange (22) adapted for fastening the agitator to a wall of a mixing vessel,

d) the agitator further comprising a support housing (6) having at least a tubular support frame (24) with a first end and a second end,

e) the first end of the tubular support frame (24) being attached to the mounting flange (22),

f) the second end of the tubular support frame (24) being provided with a support bearing (30) for supporting the second end of the second drive shaft (18), the support bearing (30) being a slide bearing,

g) a shaft seal (20) arranged at the first end of the tubular support frame (24), the shaft seal (20) being provided with means for locking the shaft seal (20) on the second drive shaft, and the shaft seal (20) being fastened either to the mounting flange (22) or to the first end of the tubular support frame (24),

h) sealing means (32) arranged in connection with the second end of both the second drive shaft (18) and the tubular support frame (24), the sealing means comprising a sealing member (44) and a counter surface (46), and

i) an intermediate frame (4) between the drive unit (2) and the mounting flange (22) comprising an opening or window,
wherein a carrier is provided at one of the mounting flange (22) and the first end of the tubular support frame (24) adapted for locking the second drive shaft (18) immobile in both axial and circumferential directions for the maintenance of the shaft seal (20).

US Pat. No. 9,492,801

METHOD AND APPARATUS FOR MIXING A FIRST FLUID WITH A SECOND FLUID IN A MIXING CHAMBER CONNECTED TO A TURBINE CHAMBER

Sulzer Management AG, Wi...

6. A method of mixing a second fluid into a first fluid in an apparatus, the apparatus comprising:
a housing comprising a mixing chamber and a turbine chamber in operative communication with said mixing chamber;
the mixing chamber comprising:
an inlet channel with an inlet opening, wherein the inlet opening is configured for said first fluid to be introduced into
the inlet opening from a pipeline, wherein the pipeline is separate from and fluidly isolated from the turbine chamber;

an outlet channel with an outlet opening for a mixture of said first and said second fluid; and
a mixer rotor disposed in the mixing chamber;
the turbine chamber comprising an inlet conduit for the second fluid, and a turbine wheel; said turbine wheel being connected
operatively to said mixer rotor;

the method comprising:
introducing said first fluid into said mixing chamber from said pipeline;
introducing said second fluid into said turbine chamber to thereby rotate said turbine wheel by a motive force of said second
fluid, so that the rotation of the turbine wheel imparts rotation to the mixer rotor thereby affecting the mixing of the second
fluid into said first fluid;

discharging said second fluid from said turbine chamber to an outlet conduit;
introducing said second fluid from said outlet conduit into one of said mixing chamber and said inlet channel; and
mixing said first fluid and said second fluid in said mixing chamber; wherein the turbine chamber is separate from the mixing
chamber, wherein the turbine wheel is disposed in the turbine chamber, wherein the turbine wheel is separate from the mixer
rotor, and wherein the motive force of the second fluid rotates the turbine wheel without directly rotating the mixer rotor.

US Pat. No. 9,752,916

PROBE FOR MONITORING THE SURFACE LEVEL OF A FLUID IN A VESSEL AND A METHOD OF INSTALLING THE PROBE IN THE VESSEL

SULZER MANAGEMENT AG, Wi...

1. A method of installing a probe inside a vessel for monitoring a surface level of a fluid in the vessel from outside the
vessel, the vessel having a side wall and the probe having a first end, a second end, a detection unit therebetween, at least
a first fastening device and at least a second fastening device for fastening the probe to the side wall of the vessel and
at least one device for transmitting surface level-related information out of the vessel, the method comprising the steps
of:
providing the vessel side wall with a first opening;
providing the vessel side wall with a second opening through the side wall;
passing the second end of the probe, the second fastening device for fastening the probe and the detection unit of the probe
through the first opening and inside the vessel;

orienting the second end of the probe towards the second opening;
attaching the second end of the probe to the side wall of the vessel at the second opening; and
fastening the first end of the probe to the side wall of the vessel at the first opening.

US Pat. No. 9,593,694

PUMP

Sulzer Management AG, Wi...

1. A pump including:
an outer housing having an outlet chamber with an outlet connector;
a first part pump and a second, downstream part pump, wherein the first and second part pumps are arranged in the outer housing;
a separating element which can be arranged between the first and second part pumps; and
a rotor shaft which is rotatably arranged in the first and second part pumps,
wherein the outer housing, the first part pump and the separating element bound a first pressure chamber and the outer housing,
the second part pump and the separating element bound a second pressure chamber and the first and second pressure chambers
are designed and arranged such that the outlet chamber is formed as a single high-pressure region of the pump, and the first
pressure chamber includes a compensation opening and the second pressure chamber includes an inlet opening, wherein an output
of a pump module is in flow communication with the compensation opening of the first pressure chamber by means of a compensation
line.

US Pat. No. 9,702,371

SEALING ARRANGEMENT AND PUMP HAVING A SEALING ARRANGEMENT

Sulzer Management AG, Wi...

1. A sealing arrangement for a high-pressure space comprising:
a bounding element which has an outer sealing surface and
a termination element which has an inner sealing surface,
wherein the outer sealing surface and the inner sealing surface are arranged such that a sealing-off of the high-pressure
space is achieved via a contact of the two sealing surfaces,

wherein the bounding element is configured so that a force, due to a pressure in the high-pressure space, in the direction
of the inner sealing surface acts on the outer sealing surface and causes the outer sealing surface to press onto the inner
sealing surface and the bounding element is a part of a housing of the high-pressure space or as a separation element to a
different pressure space, and

wherein the bounding element or the termination element has an integral projecting collar which forms at least a part of the
outer sealing surface or of the inner sealing surface, said collar being configured so such that the pressure in the high-pressure
space acts on an inner surface of the collar lying opposite of the outer sealing surface or the inner sealing surface.

US Pat. No. 9,339,777

METHOD, AN APPARATUS AND A ROTOR FOR HOMOGENIZING A MEDIUM

Sulzer Management AG, Wi...

1. A method of homogenizing a medium in an apparatus,
the apparatus including
a housing having
a homogenizing chamber with a circumferential wall, and
two end caps at the opposite ends of the chamber,
the circumferential wall having an inlet opening and an outlet opening,
 the inlet opening communicating with an inlet duct, and
 the outlet opening communicating with an outlet duct,
 both openings having a center;
a center line plane between the end caps;
the center line plane running essentially via the centers of the inlet opening and the outlet opening; and
a rotor having
blades and
an axis extending through the homogenizing chamber;
the center line plane running at essentially right angles to the rotor axis,
the rotor blades being arranged symmetrically on both sides of the center line plane, each rotor blade being inclined in relation
to a plane defined by the rotor axis and an intersecting point between the respective rotor blade and the center line plane,

in which method the medium to be homogenized
is introduced into the homogenizing chamber transverse to the rotor axis through the inlet duct and the inlet opening,
is homogenized in the chamber and
is discharged therefrom via the outlet opening and the outlet duct,
the method comprising the step of
forcing the medium within the homogenizing chamber
to radially circulating movement, and
to axially circulating symmetrical movement on both axial sides of the center line plane by pumping the medium by means of
the rotor blades towards the end caps of the housing, i.e. to the axial sides of the blades.

US Pat. No. 9,303,654

METHOD FOR THE PRESSURE REGULATION OF A BARRIER FLUID AND A PUMPING DEVICE FOR A METHOD OF THIS KIND

Sulzer Management AG, Wi...

1. A method for the pressure regulation of a barrier fluid in a pumping device, the pumping device comprising a pump unit
comprising a shaft and a pump housing, the pumping device further comprising a drive unit, which is mechanically coupled to
the pump unit, the pumping device further comprising a shaft seal, which seals the pump housing relative to the shaft, the
method comprising:
pumping a pumping medium is pumped by means of the pumping device;
conveying the barrier fluid via a feed line to the shaft seal and/or to a housing in which the pump unit and the drive unit
are disposed, in order to prevent a leakage of the pumping medium out of the pump housing;

increasing the pressure of the supplied barrier fluid when a pressure difference between the pressure of the supplied barrier
fluid and a pressure of the pumping medium in the pump unit falls below a first pre-determined value by opening a pressure
reducing valve for the differential pressure to thereby connect the feed line to a source for the barrier fluid via the open
valve, the pressure of the barrier fluid lying above the pressure of the pumping medium in the pump unit;

wherein opening the pressure reducing valve comprises directly activating the pressure reducing valve by the pressure difference
between the pressure of the supplied barrier fluid and the pressure of the pumping medium in the pump unit.

US Pat. No. 10,527,048

SUBMERSIBLE PUMP AND BEARING ARRANGEMENT

SULZER MANAGEMENT AG, Wi...

9. A bearing arrangement for a submersible pump, comprising:a bearing cover;
a bearing flange; and
a bearing element having an inner bearing ring, an outer bearing ring and a roller element, the bearing element being configured to rotatably support a rotor shaft about an axis of rotation extending in a longitudinal direction so that the inner bearing ring is capable of rotating along with the rotor shaft in an operating state,
the bearing element being arranged at the bearing flange such that the bearing cover compresses the outer bearing ring in a longitudinal axial direction and such that a peripheral gap having a predefined axial width is formed in a radial direction between the outer bearing ring and the bearing cover and between the outer bearing ring and the bearing flange, the peripheral gap being a spark gap capable of explosion protection.

US Pat. No. 9,829,110

SLIDE RING, A SHAFT, A MECHANICAL SEAL, A HOUSING AND A ROTOR FOR A FLOW MACHINE AND A FLOW MACHINE

SULZER MANAGEMENT AG, Wi...

1. A mechanical seal comprising:
at least one pair of slide rings, each slide ring having an outer circumferential surface, an inner circumferential surface
and slide or seal surfaces at one axial end;

a spring,
each pair of slide rings having a rotating slide ring and a stationary slide ring, the slide or seal surfaces of each pair
of slide rings being configured to be in sliding and sealing contact with each other,

the inner circumferential surface of at least one rotating slide ring having a first shape complementing an outer circumferential
surface of one of a hub of a flow machine and a shaft of the flow machine and configured to form lock the at least one rotating
slide ring by direct mechanical contact to one of the hub and the shaft, and at least one sealing surface at a side of the
first shape,

each of the rotating slide rings, when assembled to the flow machine, being supported in an axial direction by a seal ring
to one of the hub and the shaft of the flow machine.

US Pat. No. 9,683,575

PUMP AS WELL AS A RECIRCULATION DEVICE FOR A PUMP

Sulzer Management AG, Wi...

1. A pump for conveying a pump fluid in the form of a multiphase mixture, wherein the pump fluid provided at an input pressure
at a low-pressure side of the pump can be conveyed to a high-pressure side of the pump by means of a pump rotor rotatably
supported about an axis of rotation in a pump stator in the operating state and a rotor shaft is arranged in a shaft leadthrough
such that a lubricating film of a lubricating fluid formed from the pump fluid can be formed in a ring gap between the rotor
shaft and the shaft leadthrough; and wherein a separation device is provided at the rotor shaft by which a predefinable quantity
of an ingredient can be separated from the pump fluid by means of a centrifugal force for providing the lubricating fluid
at the ring gap in the operating state, wherein a recirculation device is provided which separates a gas from the pump fluid
in the separation device and recirculates the separated gas to the high-pressure side of the pump with the aid of the separation
device.

US Pat. No. 9,664,199

CENTRIFUGAL PUMP, A SHAFT THEREFOR AND A SLEEVE FOR COUPLING THE SHAFT OF A CENTRIFUGAL PUMP TO A SHAFT OF A DRIVE MOTOR

Sulzer Management AG, Wi...

1. A centrifugal pump assembly comprising:
a motor including a motor shaft, the motor shaft having a threaded internal bore;
an impeller including an impeller shaft;
a coupling sleeve connecting the motor shaft to the impeller shaft, the coupling sleeve being arranged on the motor shaft
and including a first threaded section; and

an adjustment nut including a second threaded section in threaded communication with the first threaded section allowing the
coupling sleeve to be adjustably positioned in an axial position relative to the adjustment nut and motor shaft, the adjustment
nut being freely rotatable on a screw threaded into the threaded internal bore and being securable against an end surface
of an end of the motor shaft with the screw;

wherein the axial position of the impeller shaft relative to the motor shaft is based on the axial position of the coupling
sleeve relative to the adjustment nut and the motor shaft.

US Pat. No. 9,441,637

VOLUTE SHAPED PUMP CASING WITH SPLITTER RIB

Sulzer Management AG, Wi...

1. A volute shaped pump casing for a centrifugal pump including a chamber for housing at least one impeller rotatable around
an axis of rotation and including a volute shaped chamber which forms a flow channel and which contains a splitter rib for
dividing the flow channel formed, characterized in that in a section perpendicular to the axis of rotation a mean camber line
is positioned equidistantly between an inner and outer surface of the splitter rib, in that the thickness of the splitter
rib is varied along the mean camber line and for the mean camber line unwrapped to a straight line there is a maximum in the
thickness of the splitter rib, with the thickness at said maximum being called maximum thickness s, and in that said maximum
is positioned at a distance L from the leading edge of the splitter rib wherein the distance L is in the range between 1.4
times the maximum thickness s and 6 times the maximum thickness s, wherein for a distance from the leading edge of the splitter
rib just outside the range of the distance L the thickness of the splitter rib is smaller than the maximum thickness s.

US Pat. No. 9,316,314

SEALING ARRANGEMENT AND PUMP HAVING A SEALING ARRANGEMENT

SULZER MANAGEMENT AG, Wi...

1. A sealing arrangement for placement between two components which have a planar contact surface, comprising:
a first elongate flexible sealing element which comprises a first start region and a first end region; and
a first termination element which is configured to carry out a sealing function;
wherein the first sealing element and the first termination element are configured so that they have a first overlap region
in the first end region of the first sealing element and thus form a first continuous sealing edge,

wherein the first sealing element is displaceable relative to the first termination element so that the first sealing edge
is maintained during a displacement of the first end region of the first sealing element in the direction of the first start
region within the first overlap region; and

wherein the first termination element has a first curvature and the first sealing element contacts the first termination element
along the first curvature in a pressure-free state.

US Pat. No. 10,001,132

AXIALLY SPLIT PUMP

SULZER MANAGEMENT AG, Wi...

1. An axially split pump for conveying a fluid, comprising:an axially split housing comprising a bottom part and a cover, the bottom part having a first sealing surface and the cover having a second sealing surface, the bottom part and the cover being configured to be fastened to one another so that the first and second sealing surfaces are in direct contact with one another, a first sealing groove configured to receive a first string-like sealing element and being disposed in at least one of the first and second sealing surfaces, and a second sealing groove being disposed to receive a second string-like sealing element, the second sealing groove being connected to the first sealing groove via an opening, a connection element being disposed in the opening, the connection element having two lateral cut-outs configured to receive a respective one of the first and second string-like sealing elements, the cut-outs being arranged and configured so that the first and second string-like sealing elements are capable of being run substantially in parallel in the region of the connection elements.

US Pat. No. 9,599,150

BEARING PAD, SUPPORT BODY, BEARING ARRANGEMENT AND PUMP

Sulzer Management AG, Wi...

1. A bearing pad, comprising:
a pad body comprising a thermoplastic and defining an elongated recess extending in a radial direction; and
a tilting element disposed in the elongated recess of the pad body and comprising a contact body, wherein the contact body
projects beyond a surface of the pad body, wherein the tilting element has a planar contact surface configured to rest on
the elongated recess of the pad body, and wherein the tilting element has a lower elasticity than the pad body, further wherein
the tilting element has a recess contact surface opposite the pad surface, the recess contact surface configured to rest in
the elongated recess, the contact body extending from the pad surface, the contact body having parallel opposing first and
second side walls that extend parallel with the elongated recess, the parallel side walls extend transverse from the pad surface
a predetermined distance, and wherein the distance between the first and second sidewalls is less than the width of pad surface.

US Pat. No. 10,330,122

OPERATING METHOD FOR A PUMP, IN PARTICULAR FOR A MULTIPHASE PUMP, AND PUMP

SULZER MANAGEMENT AG, Wi...

1. An operating method for a pump for conveying a fluid from a low-pressure side to a high-pressure side, the method comprising:providing a return line for returning the fluid from the high-pressure side to the low-pressure side;
controlling a control valve in the return line with a surge control unit for avoiding an unstable operating state, the control valve controlling throughflow through the return line;
storing a limit curve for a control parameter in the surge control unit;
comparing an actual value of the control parameter with the limit curve during the operation of the pump; and
when the actual value of the control parameter reaches the limit curve, controlling the control valve in the return line such that the actual value of the control parameter is moved away from the limit curve, an operating parameter of the pump being used as the control parameter.

US Pat. No. 9,631,633

ROTOR FOR A CENTRIFUGAL FLOW MACHINE AND A CENTRIFUGAL FLOW MACHINE

SULZER MANAGEMENT AG, Wi...

1. A rotor for a centrifugal flow machine, the rotor comprising:
a hub with an axis and device configured to couple the rotor, when in use, on a shaft of the flow machine including a sealing
chamber; and

at least one working vane extending outwardly from the hub, the working vane having a front edge, a leading edge, a trailing
edge, a rear face, a leading surface and a trailing surface, the rear face, when in use, facing the sealing chamber, the working
vane being formed of a root portion and a vane portion integrated to one another, the working vane being fastened to the hub
solely by the root portion, the root portion having, when joined to the hub, a substantially trapezoidal or triangular cross
section having sides representing a leading face, a trailing face, a rounded front edge between the leading face and the trailing
face and the rear face opposite to the front edge of the root portion, the rear face of the at least one working vane forming
a sharp angle with a circumferential direction, the sharp angle opening in a direction of rotation of the rotor for pumping
fluid towards the sealing chamber for flushing the sealing chamber.

US Pat. No. 10,444,118

METHOD FOR ASSESSING A WEAR STATE OF A MODULE OF A TURBOMACHINE, MODULE, AND TURBOMACHINE

SULZER MANAGEMENT AG, Wi...

1. A method of evaluating a wear state of a component of a pump or a turbine, the method comprising:generating a mechanical query signal in a form of a wave having a predefinable signal shape using a signal generator;
providing a sensor in contact with the component of the pump or the turbine;
detecting a response signal generated from the query signal using the sensor in contact with the component;
changing the response signal in dependence on a variation of a physical operating value of the component in accordance with a characteristic pattern; and
determining a wear characteristic of the component based on the change in the response signal and evaluating the wear state of the component based on the wear characteristic.

US Pat. No. 9,556,877

PUMP AND DRIVE BEARING FOR A PUMP

Sulzer Management AG, Wi...

1. A multistage pump for conveying a pump fluid, wherein the pump fluid provided at an inlet pressure at a low pressure side
(LP) of the pump (1) can be conveyed in the operating state to a high pressure side (HP) of the pump rotor (12) by means of a pump rotor (12) rotatably supported about an axis of rotation (A) in a pump stator (11) and wherein a rotor shaft (13) with a drive side and a non-drive side is arranged with the pump rotor (12) at an additional bearing (14), which is located on the drive side, whereby the rotor shaft (13) is supported on the drive side in an outer bearing and can be coupled to the drive by means of a coupling, characterized
in that the additional bearing (14) is arranged between the outer bearing and the pump rotor (12) and a lubricating film which is formed from a lubricating fluid formed from the pump fluid can be formed on the drive side
(AS) of the rotor shaft (13) between the rotor shaft (13) and the additional bearing (14) in a lubricating ring gap (15), with a lubricant line (16) being provided such that the lubricating fluid can be supplied to the lubricating ring gap (15) between the rotor shaft (13) and the additional bearing (14).

US Pat. No. 10,634,164

FLOW MACHINE, AND FLOW GUIDING ELEMENT FOR A FLOW MACHINE

SULZER MANAGEMENT AG, Wi...

21. A pump, comprising:a housing defining a rotor space;
a rotor arranged about an axis of rotation in the rotor space of the housing,
the housing being configured so as to enable a flowing fluid to exchange energy with the rotor and, after the energy exchange, to lead the flowing fluid out of the housing; and
a flow guiding element extending about the axis of rotation in a peripheral direction of the rotor, and being disposed in the rotor space between an inner wall of the housing and the rotor such that the flow guiding element surrounds the rotor in a region of an inlet lip, and
the flow guiding element has a predetermined axial width and, in operation, the flowing fluid impinges the flow guiding element in a radially oriented direction relative to the axis of rotation, and the flow guiding element enables the flowing fluid to flow over at least one axial end thereof,
the flow guiding element being a cylindrical flow ring having the predetermined width, approximately corresponding to an axial width of the rotor, at a radial spacing from the axis of rotation in the peripheral direction around the rotor, and the predetermined width of the flow guiding element reducing in a radial direction towards the rotor.

US Pat. No. 9,708,762

METHOD OF AND AN ARRANGEMENT FOR TRANSFERRING A PROCESS LIQUID, AN INDUSTRIAL FACILITY AND A METHOD OF SIMPLIFYING THE LAYOUT OF SUCH

Sulzer Management AG, Wi...

1. A method of transferring a fiber suspension from a washing and thickening device to a subsequent process stage, the method
comprising the steps of:
providing the stand pipe with measuring means with a surface level control range having an upper surface level control limit
and a lower surface level control limit,

washing and thickening the fiber suspension to a first consistency in a washing and thickening device,
discharging the fiber suspension from the washing and thickening device at the first consistency,
introducing the fiber suspension at the first consistency directly from the top part of the washing and thickening device
into a stand pipe among the fiber suspension present in the stand pipe, the stand pipe having a cross section,

diluting the fiber suspension into a second consistency by diluting means in the stand pipe by spreading and feeding dilution
liquid by the diluting means to the cross section of the stand pipe in communication with the fiber suspension, the diluting
means being positioned and dimensioned such that the average consistency of the fiber suspension in the surface level control
range, i.e. a third consistency, is at least 1.5 times the second consistency, and

discharging the fiber suspension in the second consistency from the stand pipe.

US Pat. No. 10,634,155

PUMP DRIVE UNIT FOR CONVEYING A PROCESS FLUID

SULZER MANAGEMENT AG, Wi...

1. A pump for conveying a process fluid, comprising:a pump having an impeller rotatable about an axial direction;
a drive for the pump, the drive having a shaft configured to drive the impeller, and which connects the drive to the pump;
a restrictor extending around the shaft and being arranged between the impeller and the drive;
a housing having a pump inlet and a pump outlet for the process fluid, a barrier inlet for introduction of a barrier fluid into the drive and a barrier outlet for drainage of the barrier fluid from the housing; and
a plurality of storage chambers for the barrier fluid provided at the shaft in a region between the restrictor and the drive, the storage chambers being arranged behind one another with respect to the axial direction, with two adjacent storage chambers of the plurality of storage chambers being in flow communication with one another,
the barrier outlet and the barrier inlet being in flow communication with one another through a line so as to form a cooling circuit for the barrier fluid, with the cooling circuit comprising a heat exchanger, and
the plurality of storage chambers having a total volume which is at least as large as a thermally induced volume change of the barrier fluid in the cooling circuit based on an estimated temperature change of the barrier fluid.

US Pat. No. 10,550,850

PUMP FOR CONVEYING A HIGHLY VISCOUS FLUID

SULZER MANAGEMENT AG, Wi...

1. A pump for conveying a highly viscous fluid, comprising:a casing with at least a first inlet and an outlet for the highly viscous fluid;
an impeller configured to convey the highly viscous fluid from the first inlet to the outlet, the impeller being arranged on a rotatable shaft for rotation about an axial direction, and comprising a front shroud facing the first inlet of the pump, the casing including a stationary impeller opening configured to receive the front shroud of the impeller, the stationary impeller opening having a diameter, the front shroud and the stationary impeller opening forming a gap having a width in a radial direction perpendicular to the axial direction, and the gap extending parallel to the rotatable shaft, a ratio of the width of the gap and the diameter of the stationary impeller opening being at least 0.0045, and
the gap having a length in the axial direction which is at least 0.092 times the diameter of the impeller opening, wherein the length extends between an outer circumferential surface of the front shroud and an inner circumferential surface of the stationary impeller opening.

US Pat. No. 10,330,119

METHOD FOR THE POSITIONING OF A COVER DISK OF A PUMP AND PUMP

SULZER MANAGEMENT AG, Wi...

1. A method for the positioning of a cover disk with respect to an open impeller of a pump arranged in a pump housing, the method comprising:positioning the cover disk and the pump housing with respect to one another such that the cover disk comes into contact with the pump housing at the impeller and such that a predetermined spacing only has to be set in an axial direction between the cover disk and the impeller for reaching an end position of the cover disk;
screwing a first adjustment bolt into a first threaded bore of the cover disk until a bolt end of the first adjustment bolt comes into contact with a contact surface of the pump housing, with the cover disk continuing to contact the impeller;
applying an identifier at the cover disk or at the pump housing, the identifier identifying a position of a first marking of the first adjustment bolt;
screwing in the first adjustment bolt until a second marking of the first adjustment bolt reaches the identifier such that the predetermined spacing between the cover disk and the impeller is thereby set;
screwing a second adjustment bolt into a second threaded bore of the cover disk until a bolt end of the second adjustment bolt comes into contact with the contact surface of the pump housing, with the cover disk continuing to contact the impeller;
applying a second identifier at the cover disk or at the pump housing, the second identifier identifying a position of a first marking of the second adjustment bolt; and
screwing in the second adjustment bolt until a second marking of the second adjustment bolt reaches the second identifier such that the predetermined spacing between the cover disk and the impeller is thereby set,
the first and second adjustment bolts having like threads comprising first and second markings made as notches at a periphery of the respective adjustment bolt and have different shapes and wherein the first and second adjustment bolts being arranged in a similar manner with respect to one another at the first and second adjustment bolts.

US Pat. No. 10,240,605

PUMP CONTROL UNIT LOCATED IN THE POWER CORD AND COMPATIBLE WITH MULTIPLE PUMP UNITS

Sulzer Management AG, Wi...

1. A system for controlling a pump, comprising a pump and a control unit connected to the pump by a three phase electrical power supply cable, wherein:the control unit is, irrespective of a power rating of the pump, detachably connectable to the pump via the electrical power supply cable,
the control unit is compatible with pumps having different power ratings,
an electronic controller is arranged in the pump, the electronic controller including a soft starter unit for starting the pump and a microcontroller unit for monitoring at least one of the pump's operating conditions,
the pump and the control unit are adapted to communicate with each other and transmit data/signals over the electrical power supply cable, comprising control and/or monitoring information/data for managing the system,
the pump and the control unit pair automatically such that the control unit receives signals or transmits signals adapted to a specific power rating of the pump paired to the control unit,
the control unit is connected to the electronic controller of the pump and located along the electrical power supply cable between a power supply and the pump, and
the pump is maintained operational by the electronic controller arranged in the pump when the control unit is bypassed.

US Pat. No. 10,066,635

MULTIPHASE PUMP

SULZER MANAGEMENT AG, Wi...

1. A multiphase pump for pumping a multiphase mixture containing hydrocarbon, comprising:a separation system having a first separation stage and a second separation stage, the first separating stage configured to at least partly separate at least one portion of the multiphase mixture into a plurality of phase-enriched components, and comprising an impeller attached to a pump shaft of the multiphase pump;
a supply system configured to supply a liquid-enriched liquid component as a lubricant to a pump element to be lubricated,
the second separation stage configured to separate the liquid-enriched liquid component into a more highly enriched liquid component and a gas-enriched gas component, and having a centrifuge with a rotating centrifugal element with an inwardly disposed gas passage and an outwardly disposed liquid passage which leads through a bearing for supporting the centrifugal element; and
a central shaft supporting the centrifugal element.

US Pat. No. 10,330,110

PUMP IMPELLER

Sulzer Management AG, Wi...

1. A pump impeller for use in combination with a wear plate, the pump impeller comprising:a single impeller vane defining an interior space through which fluid is displaced, the impeller vane having a leading edge, a trailing edge and an upper rim for location, in use, adjacent the wear plate, wherein the impeller vane comprises a sloping inner wall that crosses a central bore for receiving a main shaft of a pump; and
a shroud from which the impeller vane projects;
wherein the leading edge is profiled to actively displace solid material entering the impeller in a direction away from the wear plate,
wherein the leading edge defines a tip at the upper rim and a root at the shroud, the leading edge extending rearward into the impeller vane from the root and curving outward toward the tip such that the leading edge forms a first acute angle with an upper surface of the shroud at the root and a second acute angle with the upper rim at the tip.

US Pat. No. 10,274,015

BEARING FOR A PUMP AND METHOD OF RETROFITTING A BEARING FOR A PUMP

SULZER MANAGEMENT AG, Wi...

17. A bearing for a pump with a shaft rotating around an axial direction, the bearing comprising:a housing;
a bearing cover fixed to the housing;
a bearing structure configured to support the shaft of the pump;
a reservoir for a lubricant;
an oil ring configured to transport the lubricant and to supply the lubricant to the bearing structure, the oil ring arranged to be moved by the rotating shaft; and
a retaining element fixed with respect to the housing or the cover, the retaining element being configured and arranged so as to restrict movement of the oil ring at least in the axial direction, the retaining element comprising two lateral bars extending parallel and being spaced from each other to define a gap therebetween, the gap accommodating a part of the oil ring, and the two lateral bars being connected by two end pieces, and each end piece being located at an end of the lateral bars.

US Pat. No. 10,634,165

PUMPING APPARATUS HAVING A FLOW GUIDING ELEMENT

SULZER MANAGEMENT AG, Wi...

1. A pumping apparatus comprising:an impeller rotationally supported about an axis of rotation, being configured to convey a pumpable medium and discharge the pumpable medium in a direction having a major component thereof parallel to the axis of the rotation;
an inlet housing spanning a suction region upstream of the impeller and partially spanning a pump region in which the impeller is arranged, and forming a constriction between the pump region and the suction region upstream of the impeller, the pump region extending from the constriction so as to have an increasing diameter at least partially upstream of the impeller, and the constriction having a diameter that is less than both a diameter of the pump region and a diameter of the suction region; and
at least one flow guiding element at least partly arranged within the suction region, and further arranged to guide the medium flowing in an axial direction of the impeller, the suction region being provided to guide the medium flowing in the axial direction of the impeller so as to discharge the medium into the pump region, the at least one flow guiding element including at least one ring segment and being at least partially disposed in the constriction, and a spacing defining a distance being present between the inlet housing and the at least one flow guiding element that is less than a radial distance of the flow guiding element from the axis of rotation.

US Pat. No. 10,495,092

PUMP FOR CONVEYING WASTE WATER AS WELL AS IMPELLER AND BASE PLATE FOR SUCH A PUMP

Sulzer Management AG, Wi...

1. An impeller for a pump for conveying waste water comprising:a support body configured to be rotated about an axis of rotation; and
two distinct non-contiguous blades separately extending from the support body and positioned radially around the axis of rotation, wherein each blade comprises:
an end side surface remote from the support body, wherein the end side surfaces of the two blades are not contiguous,
an inlet edge defining a leading edge of each blade and extending between the support body and the end side surface, wherein the inlet edges of the two blades are spaced apart from each other and are positioned radially around the axis of rotation,
a pressure side extending from the inlet edge and facing away from the axis of rotation, and
a suction side extending from the inlet edge and facing the axis of rotation,
wherein the blades each define an inlet region extending from the inlet edge to an apex of the end side surface,
wherein a wall thickness at the end side surface of each blade increases from the end side surface at the inlet edge to a maximum value of the wall thickness at the end side surface at the apex,
wherein the suction side of each blade along a length of the inlet region is angled in an axial direction from the support body to the end side surface away from the axis of rotation, and
wherein the pressure side of each blade along the length of the inlet region is angled in an axial direction from the support body to the end side surface toward the axis of rotation.

US Pat. No. 10,215,185

PUMP FOR THE CONVEYANCE OF A FLUID WITH VARYING VISCOSITY

SULZER MANAGEMENT AG, Wi...

1. A pump for conveying a fluid with varying viscosity, comprising:a housing having an inlet and an outlet configured to convey the fluid;
an impeller configured to convey the fluid from the inlet to the outlet, the impeller being arranged on a rotatable shaft; and
a balance drum configured to relieve axial thrust, the balance drum comprising a rotor rotationally fixedly connected to the shaft, the rotor having a high pressure side and a low pressure side, a stator configured to be stationary with respect to the housing, and a relief passage extending between the rotors and the stator from the high pressure side up to the low pressure side of the rotor;
a return passage connecting the low pressure side of the rotor to the inlet;
an intermediate passage opening into the relief passage between the high pressure side and the low pressure side of the rotor; and
a blocking member configured to influence the flow through the intermediate passage.

US Pat. No. 10,557,474

ROTARY MACHINE AND METHOD FOR THE HEAT EXCHANGE IN A ROTARY MACHINE

SULZER MANAGEMENT AG, Wi...

1. A rotary machine for conveying a fluid, comprising:a drive unit configured to drive a shaft;
an impeller arranged at the shaft, and configured to convey the fluid;
at least one mechanical seal configured to seal the shaft;
a first and a second heat exchange system configured to cool or heat the mechanical seal, the first heat exchange system comprising an inlet and configured for direct application of a fluid heat carrier at the mechanical seal and the second heat exchange system comprising a heat exchange jacket capable of having a fluid heat carrier flow therethrough without direct contact with the mechanical seal and comprising a hollow space having an inlet and an outlet, the fluid heat carrier of the second heat exchange system of passing from the inlet of the hollow space to the outlet of the hollow space without being in fluid communication with the inlet of the first heat exchange system, and the inlet for the first heat exchange system being different from both the inlet and the outlet for the second heat exchange system, the second heat exchange system at least partially defining the flow path of the first heat exchange system, and the first and the second heat exchange systems forming a common heat exchange system in which a common fluid heat carrier comprising the fluid heat carrier of the first heat exchange system and the fluid heat carrier of the second heat exchange system is capable of being circulated; and
a fan wheel configured to circulate the common fluid heat carrier in the common heat exchange system.

US Pat. No. 10,670,033

PUMP FOR A FLUID

SULZER MANAGEMENT AG, Wi...

1. A pump for fluids, the pump comprising:a pump housing;
a power source;
a drive shaft connected to the power source and extending along an axis;
a fluid inlet;
a first impeller rotated by the drive shaft and comprising a first impeller inlet in fluid connection with the fluid inlet, and a first impeller outlet;
a second impeller rotated by the drive and comprising a second impeller inlet in fluid connection with the first impeller outlet, and a second impeller outlet; and
a sealing element stationarily arranged in relation to the drive shaft and the first and second impellers, the sealing element being sleeve shaped and arranged between the first and second impellers around the drive shaft, the sealing element having a first end transverse to the drive shaft and facing the first impeller and a second end transverse to the drive shaft facing the second impeller, the sealing element having a length along the axis smaller than a distance between the first and second impellers such that the sealing element is movable along the axis between the first and second impellers,
the first end of the sealing element having a first area transverse to the axis and the second end having a second area transverse to the axis, and the first area being larger than the second area such that a force exerted by a lower pressure generated by the first impeller and the first area is substantially equal to a force exerted by a higher pressure generated by the second impeller and the second area.

US Pat. No. 10,247,195

IMPELLER FOR A CENTRIFUGAL HEADBOX FEED PUMP

SULZER MANAGEMENT AG, Wi...

1. An impeller of a centrifugal headbox feed pump, the impeller comprising:a shroud with a front face and a circumference;
a plurality of long working vanes on the front face; and
a plurality of shorter intermediate working vanes on the front face between the long working vanes, the shorter intermediate working vanes having a leading edge and a foot part thereof, wherein the shorter intermediate working vanes have a leading edge with an angle of inclination, a foot length (Lfs) and an edge length (Les), the long working vanes having a leading edge with an angle of inclination, the angles of inclination of the leading edges of the long and shorter working vanes having a difference of 20 to 45 degrees, the foot length (Lfs) of the shorter intermediate working vane being between 1.2* Les and 3.0* Les and at least one of a plurality of openings for gas discharge arranged through the shroud within a circumference formed by the foot parts of the leading edges of the shorter intermediate working vanes and of a plurality of balancing openings arranged through the shroud within a circumference formed by the foot parts of the leading edges of the long working vanes.

US Pat. No. 10,280,924

PUMP AND METHOD FOR CHANGING THE PUMPING CAPACITY OF A PUMP

SULZER MANAGEMENT AG, Wi...

1. A pump for fluids, the pump comprising:a pump housing;
a power source enclosed within the housing;
a drive shaft connected to the power source;
at least one pump inlet arranged in the pump housing;
a pump outlet arranged in the pump housing;
a first impeller arranged within a first impeller chamber and configured to be rotated by the drive shaft; and
a second impeller arranged within a second impeller chamber and configured to be rotated by the drive shaft,
the pump being changeable between a first configuration in which the first and second impellers are arranged in parallel to provide a high pumping capacity, and a second configuration in which the first and second impeller are arranged in series to provide a pump with less pumping capacity than the high pumping capacity, and
the first and second impeller chambers each comprises two impeller chamber outlets arranged adjacent to an outer periphery of the first and second impellers in radially opposite positions around a respective impeller.

US Pat. No. 10,273,969

AXIALLY SPLIT PUMP

SULZER MANAGEMENT AG, Wi...

1. An axially split pump for conveying a fluid, comprising:an axially split housing including a bottom part and a cover;
a rotatable shaft determining an axial direction; and
at least one side cover configured to close the housing in the axial direction,
the at least one side cover having a first contact surface configured to cooperate with a second contact surface disposed on the housing, the second contact surface extending along both the bottom part and the cover, the bottom part having a first sealing surface and the cover having a second sealing surface, the bottom part and the cover being configured to be fastened to one another so that the first and second sealing surfaces are in direct contact with one another, at least one sealing groove disposed in one of the first and second sealing surfaces for the reception of a string-like sealing element, the at least one sealing groove extending up to the second contact surface of the housing,
a recess surrounding the shaft being disposed in the second contact surface and a projection surrounding the shaft being disposed in the first contact surface of the at least one side cover, and the recess and the projection being configured and arranged so as to form a ring-shaped groove for the reception of a ring-shaped sealing element in a mounted state of the at least one side cover.

US Pat. No. 10,857,479

LIQUID DISTRIBUTOR IN COLUMNS, METHOD FOR PRODUCING A LIQUID DISTRIBUTOR AND COLUMN AND METHOD FOR SEPARATING SUBSTANCE MIXTURES

SGL Carbon SE, Wiesbaden...

1. A liquid distributor, comprising:an internal column component for a defined distribution of a liquid flowing downward within a column, said internal column component including:
at least one bottom and side walls forming a container for accommodation and defined distribution of the liquid;
said bottom and at least one of said side walls being constructed as interconnected planar flat panels;
said interconnected panels being connected to each other at least in a form-locking manner; and
at least one panel of said at least one side wall including a fiber composite material.

US Pat. No. 10,584,710

SEAL ARRANGEMENT FOR A HIGH-PRESSURE PUMP AND HIGH-PRESSURE PUMP HAVING SUCH A SEAL ARRANGEMENT

SULZER MANAGEMENT AG, Wi...

1. A sealing arrangement for sealing a pressure chamber in a high pressure pump, the pressure chamber being bounded by a first bounding element and a second bounding element, comprising:a separate sealing element having a first sealing surface configured to cooperate with the first bounding element and a second sealing surface configured to cooperate with the second bounding element,
the first and second sealing surfaces being inclined with respect to one another and each of the first and second sealing surfaces having a groove configured to receive a sealing ring, and the separate sealing element being arranged and configured so as to cover a gap opening between the first bounding element and the second bounding element by being displaced along one of the first and second bounding elements on application of a predetermined pressure.

US Pat. No. 10,480,517

METHOD OF AND ARRANGEMENT FOR MONITORING THE CONDITION OF A VOLUTE CASING OF A CENTRIFUGAL PUMP

SULZER MANAGEMENT AG, Wi...

1. A method of monitoring a condition of a volute casing of a centrifugal pump, the volute casing comprising an outlet duct with a wall and an outlet opening, a centreline plane, a cutwater tongue, an axis, and a wall having an inner surface defining an interior of the volute casing and an outer surface, the method comprising:determining, in the wall of the volute casing, at least one point, which, in view of the material forming the volute casing, is critical to wear;
providing, from outside the volute casing, a blind hole in the wall of the volute casing at the at least one point, the blind hole having a depth;
receiving information regarding the blind hole; and
taking predetermined actions to replace the volute casing with a new casing after the information indicates the blind hole opens into the interior of the volute casing.

US Pat. No. 10,161,378

ENERGY RECOVERING EQUIPMENT AS WELL AS A METHOD FOR RECOVERING ENERGY

Sulzer Management AG, Wi...

1. An energy recovering equipment, comprising:a first pump for pumping a liquid from a first lower level corresponding to a first lower potential energy to a second higher level corresponding to a second higher potential energy,
a turbine being located at a third level corresponding to a third potential energy being smaller than said second higher potential energy, and
a first tank and a second tank for storing the liquid, wherein the first lower level and the third level are above the first tank and the second tank,
wherein the turbine is in liquid communication with the first pump by a connecting pipe in such a way that, in an operating state, the liquid is fed by the first pump via the connecting pipe from the first lower level and via the second higher level to the turbine located at the third level, wherein the turbine is connected to the first pump in such a way that a recovery-energy recovered from the liquid by passing through the turbine is used to drive the first pump that operates concurrently with the turbine, wherein the first pump and the turbine are in liquid communication via an energy exchange device being provided at the second higher level for exchanging energy between the liquid and an external energy.

US Pat. No. 10,094,222

IMPELLER FOR A CENTRIFUGAL PUMP

Sulzer Management AG, Wi...

1. An impeller for a centrifugal pump, the impeller comprising a hub with at least one solid and rigid working vane, the at least one solid and rigid working vane having a leading edge region, a trailing edge region, a central region, a thickness at the central region, a side edge, a pressure face, and a suction face, the leading edge region of the at least one solid and rigid working vane being provided with a first rounding having a thickness greater than that in the central region, wherein the trailing edge region of the at least one solid and rigid working vane is provided with a second rounding to have a thickness greater than that in the central region, and wherein the second rounding at the trailing edge region is arranged on the pressure face of the working vane.

US Pat. No. 11,111,800

METHOD FOR MANUFACTURING AN IMPELLER OF A ROTARY MACHINE AND AN IMPELLER MANUFACTURED USING SUCH A METHOD

SULZER MANAGEMENT AG, Wi...


1. A method for manufacturing an impeller of a rotary machine, the impeller comprising at least one vane limiting an inner channel which is at least partly closed, the method comprising:successively manufacturing the impeller from several material layers by a build-up process from a powder, by applying the powder in each case to a processing plane for the production of each material layer;
producing a material layer from the powder by a selective energy input; and
determining a structural orientation for the impeller, according to which the impeller is built up in layers, the structural orientation being defined by only a first angle and a second angle, the first and second angles defining the relative position of the impeller to the processing plane.

US Pat. No. 10,745,332

PROCESS FOR PURIFYING A CRUDE COMPOSITION INCLUDING A MONOTERPENE COMPOUND, SUCH AS A MONOCYCLIC MONOTERPENE ALCOHOL, BY LAYER MELT CRYSTALLIZATION

SULZER MANAGEMENT AG, Wi...

1. A process for purifying a crude composition including a monoterpene compound selected from the group consisting of monocyclic monoterpene alcohols, monocyclic monoterpene ketones, bicyclic epoxy monoterpenes and mixtures of two or more of the aforementioned compounds, the process comprising performing a layer crystallization with a melt of the crude composition,the melt of the crude composition, which is subjected to the layer crystallization, including oxygen-containing solvent in a concentration of 20 ppm to 2% by weight, the oxygen-containing solvent selected from the group consisting of water, C1-6-alcohols, C1-6-carboxylic acids, C1-6-ketones, C1-6-aldehydes, C1-12-ethers, C1-12-esters and mixtures of two or more of the aforementioned solvents.

US Pat. No. 10,981,844

SEMI-CONTINUOUS CRYSTALLIZATION METHOD AND APPARATUS

Sulzer Management AG, Wi...

1. A plant for the separation and purification of a substance in a concentration of less than 50% by weight, the plant comprising:(a) a source of the liquid feed mixture comprising the substance to be separated and purified in a concentration of less than 50% by weight,
(b) a static crystallization apparatus,
wherein the static crystallization apparatus comprises:
(c) a vessel,
(d) a substantially vertically-disposed cooled surface,
(e) optionally a crystal-retention system for retaining crystals within the vessel,
(f) a liquid inlet distribution system embodied so as to distribute a liquid substantially homogeneously over a horizontal cross-section of the vessel and
(g) a liquid outlet collection system embodied so as to collect liquid homogeneously along an edge between a substantially vertical wall and a bottom of the vessel,
wherein the static crystallization apparatus additionally comprises a circulation loop connected directly between the liquid outlet collection system and the liquid inlet distribution system, wherein the circulation loop is embodied to provide at least a partial recirculation directly between the liquid outlet collection system and the liquid inlet distribution system.

US Pat. No. 10,864,607

METHOD FOR MANUFACTURING OR FOR REPAIRING A COMPONENT OF A ROTARY MACHINE AS WELL AS A COMPONENT MANUFACTURED OR REPAIRED USING SUCH A METHOD

SULZER MANAGEMENT AG, Wi...

1. A method for repairing a component of a rotary machine, the component extending in an axial direction and a radial direction vertical thereto, and comprising a plurality of inner channels, each inner channel extending from a first end in a center of the component to a second end at a radial limiting radial surface of the component, the second end of the channel opening in the radial limiting surface of the component, adjacent channels being respectively separated by a separating wall, the method comprising:identifying damaged areas of the component at the limiting radial surface or at one of the channels or at one of the separating walls;
manufacturing a blank by a machining removal or by a separating removal of the damaged areas, the blank comprising the center of the component; and
replacing the removed damaged areas by a build-up process on the blank to manufacture the final form of the component.

US Pat. No. 10,724,526

MULTI-STAGE HORIZONTAL CENTRIFUGAL PUMP FOR CONVEYING A FLUID AND A METHOD FOR REPAIRING THE SAME

SULZER MANAGEMENT AG, Wi...

1. A multiple-stage horizontal centrifugal pump for conveying a fluid, comprising:a rotor comprising a rotatably arranged shaft and a plurality of impellers for conveying the fluid, each impeller of the plurality of impellers being arranged in a rotatably fixed manner on the shaft;
a stator comprising a plurality of stage casings arranged consecutively one after another with respect to an axial direction determined by a central axis, the stator encompassing the rotor, and each stage casing of the plurality of stage casings being configured and arranged centrically with respect to the central axis;
a plurality of wear rings disposed between the rotor and the stator, each wear ring of the plurality of wear rings being fixed with respect to the stator, and surrounding the rotor with a clearance, at least one wear ring of the plurality of wear rings is designed eccentrically and unitarily; and wherein each stage casing of the plurality of stage casings is separate from each other stage casing of the plurality of stage casings.

US Pat. No. 11,060,614

MECHANICAL SEAL AND A SLIDE RING THEREOF

SULZER MANAGEMENT AG, Wi...


1. A mechanical seal, comprising:a rotary part including at least a rotary slide ring and a rotary slide ring carrier, the rotary slide ring having a first axial end located in a seat in the rotary slide ring carrier, and a second axial end with an area and a rotary slide surface;
a non-rotary part including at least a non-rotary slide ring and a non-rotary slide ring carrier, the non-rotary slide ring having a first axial end located in a seat in the non-rotary slide ring carrier, and a second axial end with an area and a non-rotary slide surface;
a sensor in communication with the mechanical seal configured to collect information from at least one of the rotary slide ring and the non-rotary slide ring; and
a circumferential groove positioned on a circumferential surface in one of the rotary slide ring or the non-rotary slide ring at a distance spaced from the rotary slide surface or the non-rotary slide surface and closer to the rotary slide surface or the non-rotary slide surface of the second axial end of the one of the rotary slide ring or the non-rotary slide ring than the first axial end of the one of the rotary slide ring and the non-rotary slide ring, such that when the one of the rotary slide ring or the non-rotary slide ring is worn up to an edge of the circumferential groove, further wear of the one of the rotary slide ring or the non-rotary slide ring results in a diminishing area of the second axial end of the one of the rotary slide ring or the non-rotary slide ring, and the circumferential groove has two side surfaces, and an angle, measured within one of the rotary slide ring or the non-rotary slide ring, between the side surface closer to the second axial end of one of the rotary slide ring or the non-rotary slide ring and the circumferential surface of the one of the rotary slide ring and the non-rotary slide ring is closer to the second axial end of one of the rotary slide ring or the non-rotary slide ring, is obtuse.

US Pat. No. 11,035,374

SHAFT SEAL INCLUDING AN UPSTREAM NON-CONTACT PART

SULZER MANAGEMENT AG, Wi...

1. A rotary machine for acting on a fluid, the rotary machine comprising:a stationary housing;
a rotor configured to interact with the fluid;
a shaft configured to rotate the rotor about an axial direction;
a bearing configured to support the rotor; and
a sealing arrangement configured to seal the bearing with respect to the rotor, the rotor being arranged in the housing, and the sealing arrangement comprising a stationary sealing element surrounding the shaft and configured to contactless seal the shaft, the sealing arrangement further comprising a rotor ring configured to prevent an axial flow along the shaft to the rotor and a cover plate, the rotor ring rotationally fixedly connected to the rotor and arranged axially adjacent to the sealing element, the rotor ring comprising a radially outer edge extending in the axial direction and surrounding the sealing element, the cover plate fixed with respect to the housing and surrounding the rotor ring, the cover plate having an outer rim extending in the axial direction, a drain chamber formed between the outer edge of the rotor ring and the outer rim of the cover plate, and a discharge passage provided to discharge the drain chamber.

US Pat. No. 11,045,744

WASH COLUMN APPARATUS WITH STATIC GRID ELEMENT FOR USE IN A SUSPENSION CRYSTALLIZATION PROCESS

SULZER MANAGEMENT AG, Wi...


1. A wash column apparatus for use in a suspension crystallization process configured to separate crystals from a crystal suspension mixture composed of crystals and mother liquor, the wash column apparatus comprising:a cylindrical vessel, the cylindrical vessel comprising:
a piston with a piston head and a piston rod, the piston being arranged reciprocatingly movable in the cylindrical vessel, the piston bounding above the piston head a wash chamber inside the cylindrical vessel, and the piston head comprising at least one filter,
an inlet configured to supply a crystal suspension mixture composed of crystals and mother liquor into the cylindrical vessel,
a first outlet configured to discharge mother liquor from the cylindrical vessel,
a second outlet configured to discharge crystals or crystal melt from the cylindrical vessel,
a circulation conduit configured to circulate melt arranged outside the cylindrical vessel, the circulation conduit being in communication with the wash chamber, and
a static grid element arranged in the wash chamber configured to restrict movement of a crystal bed that has been compacted in the wash chamber by the piston and configured to direct a wash liquid entering into the cylindrical vessel from the circulation conduit so as to homogeneously distribute the wash liquid over an entire cross-section of the wash column,
the static grid element comprising at least one element, which is at least substantially vertically extending, and at least two vertically extending cavities, which are at least substantially vertically extending, the at least two cavities, which are at least substantially vertically extending, being open at upper and lower ends thereof, but otherwise at least partially closed, substantially vertically extending meaning that a longitudinal axis of the at least one element and of the at least two cavities extends at an angle of 0 to 60° to a vertical direction,
wherein a second inlet leads from the cylindrical vessel into the circulation conduit for discharging a part of the crystals or crystal melt thereof into the circulation conduit and a third outlet leads from the circulation conduit into the cylindrical vessel for partially reintroducing the circulated melt as reintroduced wash liquid into the cylindrical vessel so as to flow through the static grid element to the crystal bed,
wherein the second inlet and the third outlet are arranged at a downstream side of the static grid element, the downstream side being a side of the static grid element that is opposite to a side of the static grid element at which the piston performs a compression stroke,
wherein a heating element is provided in the circulation conduit to control a temperature of the circulated melt, and
wherein dimensions and cross-sectional areas of the cavities are adjusted so as to allow the formation and maintenance of the crystal bed and to homogeneously distribute the reintroduced wash liquid over the entire cross-section of the wash column.

US Pat. No. 10,989,213

SHAFT BEARING DEVICE WITH A LIFTING DEVICE

SULZER MANAGEMENT AG, Wi...

13. A shaft bearing device for a pump, the shaft bearing device comprising:an antifriction bearing that is a radial bearing in contact with a bearing housing and configured to absorb radial forces of a shaft, the antifriction bearing comprising an inner ring and an outer ring; and
a spring arranged at the antifriction bearing such that a spring force is capable of being transmitted to the antifriction bearing by the spring in a mounting condition of the shaft bearing device such that a lifting element and a corresponding counter element are separated from each other in at least one of a starting state and a shutdown state of the pump, a first surface on the outer ring on a first side of the antifriction bearing transverse to an axis of the shaft at a first end of the antifriction bearing abuts a surface of the bearing housing when the pump is in a shutdown state and a second surface on the inner ring on a second side, opposite the first side, of the antifriction bearing transverse to the axis of the shaft at a second end of the antifriction bearing abuts a surface of the pump shaft; and
a pressure ring supporting the spring at the bearing housing of the antifriction bearing, the pressure ring being disposed between the spring and the antifriction bearing such that the spring force is capable of acting on the antifriction bearing via the pressure ring.

US Pat. No. 10,975,006

INTEGRATED PROCESSES FOR PARA-XYLENE PRODUCTION

SCG Chemicals Co., Ltd., ...

1. A process for producing para-xylene, the process comprising:separating, in a xylene column, a C8 aromatic hydrocarbon stream and a C9+ hydrocarbon stream, from at least a portion of an impure ethylbenzene-containing feed;
separating, in a xylene separation zone, a para-xylene rich product from at least a portion of the C8 aromatic hydrocarbon stream, to provide a para-xylene-depleted effluent;
isomerizing, in an isomerization zone, at least a portion of the para-xylene-depleted effluent, to provide a xylene-equilibrated isomerate;
recycling at least a portion of the xylene-equilibrated isomerate to the xylene column, and
separating, in an ethylbenzene (EB) separation unit, an ethylbenzene-rich product from (i) a portion of the ethylbenzene-containing feed to provide an ethylbenzene-depleted feed, and combining at least a portion of the ethylbenzene-depleted feed with all or a portion of the C8 aromatic hydrocarbon stream, (ii) a portion of the C8 aromatic hydrocarbon stream to provide an ethylbenzene-depleted C8 aromatic hydrocarbon stream, and combining at least a portion of the ethylbenzene-depleted C8 aromatic hydrocarbon stream with a portion of the C8 aromatic hydrocarbon stream bypassing the EB separation unit, (iii) a portion of the para-xylene-depleted effluent to provide an ethylbenzene-, para-xylene-depleted effluent, and combining at least a portion of the ethylbenzene-, para-xylene-depleted effluent with a portion of the para-xylene-depleted effluent bypassing the EB separation unit, (iv) a portion of the xylene-equilibrated isomerate to provide an ethylbenzene-depleted, xylene-equilibrated isomerate, and combining at least a portion of the ethylbenzene-depleted, xylene-equilibrated isomerate with a portion of the xylene-equilibrated isomerate bypassing the EB separation unit, or a combination thereof.
US Pat. No. 10,968,471

METHOD OF AND ARRANGEMENT FOR TREATING BIOMASS

SULZER MANAGEMENT AG, Wi...

1. A method of continuous biomass hydrolysis in a two-stage hydrolysis process having a pre-hydrolysis reactor and a hydrolysis reactor having a hydrolysis zone and a discharge zone, the method comprising:pretreating fresh biomass by at least one of mechanical/physical, chemical, biological and thermal process or device to open the biomass for hydrolysis treatment;
adding at least one of enzymes, chemicals and nutrients to the biomass at a consistency of 15 wt % or above during the pretreating or thereafter;
mixing the at least one of enzymes, chemicals and nutrients with the fresh biomass during the adding or thereafter to form a mixture thereof;
recycling at least partially hydrolysed biomass slurry from one of the pre-hydrolysis reactor, the discharge zone of the hydrolysis reactor and a discharge line therebetween to be mixed with the mixture of the at least one of enzymes, chemicals and nutrients and the fresh biomass during the mixing or thereafter before adding to the pre-hydrolysis reactor to form a biomass slurry and to reduce the viscosity thereof;
feeding the biomass slurry to the pre-hydrolysis reactor by a centrifugal pump;
enabling the biomass slurry to advance in the pre-hydrolysis reactor in an upward direction as a laminar plug flow and form an at least partially hydrolysed biomass slurry; and
taking the at least partially hydrolysed biomass slurry from the pre-hydrolysis reactor for further processing in the hydrolysis reactor.

US Pat. No. 10,967,297

CONTINUOUS THROUGH-FLOW SETTLING VESSEL, AND A METHOD OF ADAPTIVE SEPARATION OF A MIXTURE FROM GAS AND/OR OIL EXPLORATION

Sulzer Management AG, Wi...

1. A method for separation of a mixture from gas and/or oil exploration or production, said mixture comprising a varying mixture of liquid and gaseous phases,wherein the mixture is introduced into a continuous through-flow settling vessel, said vessel provided with:
an inlet for the mixture, a gas outlet, a water outlet and an oil outlet, the outlets being provided distant from the inlet, and the oil outlet being downstream of the water outlet,
a weir downstream of the water outlet and upstream of the oil outlet, which weir functions as a barrier to a free through-flow in the vessel of the liquid phase which comprises a water phase and an oil phase, which phases are separated from each other by settling, the weir having a height lower than the gas outlet,
and wherein the method of separation involves the continuous controlling of the velocity of flow through the inlet and outlets of the vessel, so that a liquid level of the liquid phase in the vessel is maintained during operation at or below a threshold value between the height of the weir and the height of the gas outlet,
and wherein the separation comprises the steps of:
determining the presence in a pipeline of a slug flow, said slug flow being an inhomogeneity in the mixture which is mainly liquid, before it enters the inlet of the vessel;
during a phase A which precedes the slug flow entering the vessel:
lowering the liquid level of the liquid phase in the vessel upstream of the weir to or below an adapted height lower than the threshold value; and
during a subsequent phase B which includes the slug flow entering the vessel:
allowing the liquid level to rise above the adapted height in the vessel upstream of the weir, and subsequently maintaining the liquid level at or below the threshold value; and
wherein the continuous through-flow settling vessel is additionally provided with: an oil draining means capable of controllably draining oil phase from the vessel upstream of the weir, said means being provided at a level below the weir height and above the water phase that is present during operation of the vessel,wherein in phase A the oil draining means are in an active mode for draining, and in phase B these means are not in an active mode for draining.

US Pat. No. 10,890,193

MULTIPHASE PUMP

SULZER MANAGEMENT AG, Wi...

1. A multiphase pump for pumping a multiphase mixture containing hydrocarbon, comprising:a separation system having a first separation stage configured to at least partly separate at least one portion of the multiphase mixture into a plurality of phase-enriched components, the first separating stage comprising an impeller attached to a pump shaft of the multiphase pump and having an inlet side formed by a seal; and
a supply system configured to supply a liquid-enriched liquid component as a lubricant to a pump element to be lubricated,
the first separation stage configured to enable the multiphase mixture to flow around and beneath the impeller, such that the liquid and solid from the multiphase mixture is capable of being driven radially outwardly to a collection chamber, a first portion of the liquid and solid being channeled to a product stream via a connection line and a second portion of the liquid and solid entering the supply system.

US Pat. No. 10,871,169

VOLUTE CASING FOR A CENTRIFUGAL PUMP AND CENTRIFUGAL PUMP

SULZER MANAGEMENT AG, Wi...

1. A volute casing for a centrifugal pump, the volute casing having a central axis defining an axial direction, comprising:a volute chamber configured to receive an impeller for rotation about the axial direction;
an outlet passage configured to discharge a fluid; and
a first cutwater configured to direct the fluid to the outlet passage,
the cutwater comprising an inner surface facing the central axis, an outer surface facing away from the central axis and a leading edge joining the inner surface and the outer surface, the cutwater having a cross-sectional contour in a midplane perpendicular to the axial direction, the cross-sectional contour comprising a cutwater starting point at the leading edge, and a cutwater minimum point on the inner surface, the cutwater starting point being defined by a tangent to the leading edge, the tangent intersecting the central axis, and the cutwater minimum point being defined by a location, at which the inner surface has a minimum distance from the central axis, the cutwater being configured such that a straight profile chord located in the cross-sectional contour, and extending from the cutwater starting point to the cutwater minimum point, has a maximum orthogonal distance from the inner surface, the maximum orthogonal distance being at most 15% of the length of the profile chord, and an angular distance between the cutwater starting point and the cutwater minimum point measured on the midplane by an angle between the tangent to the leading edge through the cutwater starting point and a straight line connecting the cutwater minimum point with the central axis is at least 5.5°.

US Pat. No. 10,859,164

DOUBLE MECHANICAL SEAL, A STATIONARY SLIDE RING THEREOF AND A PUMP HOUSING IN A CENTRIFUGAL PUMP

SULZER MANAGEMENT AG, Wi...

1. A double mechanical seal comprising:two pairs of seal rings having slide or seal surfaces, a first pair of the seal rings including a primary stationary seal ring and a primary rotary seal ring, a second pair of the seal rings including a secondary stationary seal ring and a secondary rotary seal ring; andat least one spring arranged and configured to push, when in use, the primary and the secondary stationary seal rings in opposite directions against the primary and secondary rotary seal rings,the primary stationary seal ring comprising a slide ring and a primary carrier ring, the primary carrier ring having a first axial end with a seat for the slide ring and a second axial end with a rim opposite the first axial end, and the secondary stationary seal ring comprising a slide ring and a secondary carrier ring, the secondary carrier ring having an inlet recess or opening and an outlet recess or opening for a barrier fluid, the primary carrier ring having at least one recessed section which is recessed in an axial direction and oblong in a circumferential direction providing an annular cavity, and the inlet and outlet recesses or openings in the secondary carrier ring are arranged, when in use, in radial flow communication with the at least one recessed section, and a full-length section is arranged in the primary carrier ring adjacent the recessed section, wherein the recessed section is disposed in the rim of the second axial end and terminates at an edge of the full-length section, the edge being positioned so as to provide an abrupt reduction in a radial dimension of the annular cavity resulting in an increase in pressure in front of or at the recess or opening for the barrier fluid in the secondary carrier ring.

US Pat. No. 11,123,744

PERFORATED ROTARY CUTTER

SULZER MANAGEMENT AG, Wi...


1. An apparatus for comminuting solid waste material comprising:a casing defining a comminution chamber and being open on opposite sides thereof for permitting a flow of liquid therethrough bearing solid waste material and being adapted for connection in a solid waste disposal line;
a comminutor assembly including cooperating parallel first and second shredding stacks comprising:
first and second parallel shafts rotatably mounted, each including a plurality of cutting elements mounted on said first shaft interspaced with a plurality of second cutting elements mounted on said second shaft, each of said cutting elements having at least one cutting tooth thereon, said cutting elements being positioned between and separated in an axial direction by spacers which are coplanar with the cutting elements of the adjacent stack such that each cutting element from one stack is coplanar with one spacer from the other stack to form a pair of interactive shredding members,
wherein the at least one cutting tooth has at least one serration formed on a radially outer facing surface that is on a radial outermost surface of the at least one cutting tooth, and the at least one serration extends in a circumferential direction or a radial direction.

US Pat. No. 11,045,766

REVERSE OSMOSIS SYSTEM

SULZER MANAGEMENT AG, Wi...


1. A method comprising: providing a reverse osmosis system comprising:a membrane unit for reverse osmosis,
an energy recovery device,
a low pressure inlet line,
a high pressure inlet line,
a fluid supply line;
a pretreatment unit directly connected to the fluid supply line, the pretreatment unit being a chemical treatment unit, disinfection treatment unit or a separation treatment unit, and having a single outlet directly connected to the low pressure inlet line; and
a concentrate line,
the membrane unit having a membrane, an inlet configured to receive a pretreated feed fluid from the single outlet, a permeate outlet configured to discharge a permeate fluid, and a concentrate outlet configured to discharge a concentrate fluid, the energy recovering device having a turbine portion with a turbine rotor, a turbine inlet, and a turbine outlet, a pump portion with a pump rotor, a pump inlet and a pump outlet, a motor with a motor rotor, and a motor control unit programmed to control the motor, the pump portion being a first pump in the reverse osmosis system, and the turbine portion, the pump portion and the motor being a constructional unit with the turbine portion arranged vertically with respect to the pump portion,
the turbine rotor, the pump rotor and the motor rotor are operatively connected by a torque-proof connection,
the low pressure inlet line being connected to the pump inlet upstream of the inlet of the membrane unit, and carrying the pretreated feed fluid at a low pressure of less than 4 bars to the pump portion, the high pressure inlet line connecting the pump outlet with the inlet of the membrane unit, and supplying the pretreated feed fluid at a high pressure of at least 45 bar to the membrane unit, the concentrate line connecting the concentrate outlet with the turbine inlet, and being configured to supply concentrate fluid to the turbine portion, the pump portion being the sole pump to pressurize the pretreated feed fluid from the low pressure to the high pressure; and
operating the reverse osmosis system to treat the fluid by reverse osmosis, the fluid optionally being seawater or brackish water.

US Pat. No. 10,947,979

SHREDDING ASSEMBLY FOR A GRINDER PUMP AND CENTRIFUGAL GRINDER PUMP

SULZER MANAGEMENT AG, Wi...

1. A shredding assembly for a grinder pump, comprising:a stationary shredding ring configured to be mounted to an inlet of the pump; and
a cutting device configured to rotate about an axial direction and configured to be fixed to a shaft of the pump,
the shredding ring comprising a top face, a bottom face, and a central opening extending from the top face to the bottom face and being delimited in a radial direction by an inner periphery, a plurality of slots extending in the axial direction formed in the inner periphery,
the cutting device being positioned in the central opening of the shredding ring, and comprising a front face and a back face, the front face comprising a plurality of first cutting members extending in the axial direction and facing the plurality of slots in the inner periphery, the back face of the cutting device comprising exactly two second cutting members projecting beyond the central opening with respect to the radial direction, the exactly two second cutting members being arranged diametrically opposite at an outer periphery of the cutting device.

US Pat. No. 10,857,621

METHOD OF MANUFACTURING A COMPONENT OF A ROTARY MACHINE AND COMPONENT MANUFACTURED USING SAID METHOD

SULZER MANAGEMENT AG, Wi...

1. A method of manufacturing a component of a rotary machine that has at least one inner passage extending from a center up to a boundary surface of the component and is at least partly closed, the method comprising:providing a blank comprising the boundary surface and a top surface;
carrying out a first subtractive machining in which a part of the passage that at least comprises an opening of the passage into the boundary surface as well as a cut-out in the top surface is manufactured by machining production; and
subsequently completing the passage by build-up production on the blank such that the passage has a first end in the center and a second end at the boundary surface;
wherein the at least one inner passage comprises a plurality of inner passages of which each extends out of the center up to the boundary surface, each of a plurality of adjacent passages of the plurality of inner passages are partially separated by respective one of a plurality of partition walls, a respective part of each respective passage of the plurality of inner passages is manufactured in the first subtractive machining of each passage of the plurality of inner passages, each of the respective parts at least partially delimiting the opening of the respective passage into the boundary surface and partially delimiting an opening of the respective passage into a cut-out in the top surface, and each of the partition walls is only completed by the build-up production.

US Pat. No. 10,835,879

VANE FOR AN IMPELLER OF AN AGITATOR, IMPELLER AND AGITATOR

SULZER MANAGEMENT AG, Wi...

1. A vane for an impeller of an agitator for mixing or agitating a process fluid, comprising:a socket configured to mount the vane to an impeller; and
a blade is configured so as to be capable of mixing or agitating the process fluid connected to the socket, the blade having a leading edge, a trailing edge, and a blade tip extending from the leading edge to the trailing edge at an end of the blade facing away from the socket, and the blade having a height and a width, the height being the maximum distance of the blade tip from the socket and the width being the distance of the leading edge from the trailing edge, the blade having a maximum width that is at least 75 percent of the height and in a region between 50 percent and 60 percent of the height, a mean direction of a camber line of a profile of the blade parallel to a base plane turns around the main axis with an increasing distance from the base plane such that the mean direction of the camber line of a profile near the blade tip extend with an twist angle of at least 30° with respect to each other, and the leading edge extends from the socket to the blade tip with a main curvature that is larger than a main curvature with which the trailing edge extends from the socket to the blade tip such that the main curvature of the trailing edge has a radius that is at least 1.5 times a radius of the main curvature of the leading edge.

US Pat. No. 10,837,455

PUMP CASING FOR A CENTRIFUGAL PUMP AND CENTRIFUGAL PUMP

SULZER MANAGEMENT AG, Wi...

1. A pump casing for a centrifugal pump, the pump casing extending in an axial direction and comprising:a first housing part;
a second housing part configured to be sealingly attached to the first housing part;
a plurality of securing elements configured to link the first and the second housing parts; and
a radial sealing element configured to seal between the first and the second housing parts, the first housing part having a first axial end surface and a radially inner surface, and the second housing part having a second axial end surface, the first and second axial end surfaces facing each other, the first axial end surface comprises an annular protrusion extending in the axial direction and the second axial end surface comprises an annular recess configured to engage the annular protrusion and provide an outside centering, and the annular protrusion being arranged radially inwardly with respect to the securing elements, the sealing element arranged at the radially inner surface.

US Pat. No. 10,814,252

SPHERICAL SEPARATION DEVICE AND METHOD FOR SEPARATION

Sulzer Management AG, Wi...

1. A separation apparatus for separation of volume flows of mixtures provided with at least two immiscible phases, comprising:a vessel provided with:
an inlet for the mixture provided with the at least two immiscible phases;
a separation interior;
at least one heavy phase outlet for a separated heavy phase fraction located on a lower side of the vessel and being connected with a first subsequent separator located outside of the vessel and downstream of the heavy phase outlet, wherein the separated heavy phase fraction leaving the separator through the heavy phase outlet is fed to the first subsequent separator;
a light phase outlet for a separated light phase fraction located above the heavy phase outlet and being connected with a second subsequent separator located outside of the vessel and downstream of the light phase outlet, wherein the separated light phase fraction leaving the vessel through the light phase outlet is fed to the second subsequent separator;
wherein the vessel comprises at least one substantially spherical shaped casing to be designed for use under a higher external pressure than 1 atmosphere, and
wherein at least one of the first or second subsequent separators is a compact separator,
wherein the compact separator is selected from the group consisting of: centrifugal separators, cyclone separators, coalescers and vortex separators, and
wherein in the separation interior of the vessel a vane diffuser comprising a plurality of vanes is connected to the inlet for enabling separation of the mixture.
US Pat. No. 10,787,723

NICKEL BASE CASTING ALLOY, CASTING, AND METHOD FOR MANUFACTURING AN IMPELLER OF A ROTARY MACHINE

SULZER MANAGEMENT AG, Wi...

1. A casting cast from a nickel base casting alloy consisting of:a composition, by weight percent: 19.0-22.5 chromium, 7.0-9.5 molybdenum, 2.75-4.0 niobium, 1.0-1.7 titanium, 0.35-1.0 manganese, 0.2-1.0 silicon, 0-0.03 carbon, 0-0.015 phosphorus, 0-0.01 sulfur, 0-0.35 aluminum, 0-13.25 iron, the balance being nickel and incidental impurities,
the casting being an impeller of a rotary machine.

US Pat. No. 10,788,023

PASSIVE ACTUATOR FOR SUPPRESSING A VIBRATION OF A COLUMN PIPE OF A VERTICAL PUMP, VERTICAL PUMP AND METHOD OF RETROFITTING A VERTICAL PUMP

SULZER MANAGEMENT AG, Wi...

1. A passive actuator for suppressing vibration of a column pipe of a vertical pump, the passive actuator is configured to be mounted between the column pipe of the vertical pump and a canister surrounding the column pipe, the passive actuator having a first operational state to add stiffness between the canister and the column pipe and a second operational state to at least reduce said stiffness, the passive actuator comprising:a plurality of passive actuator elements, wherein each of the passive actuator element of the plurality of passive actuator elements is configured to automatically change from the second operational state to the first operational state when the temperature of said each of the passive actuator elements changes from a second temperature to a first temperature, the first temperature being different from the second temperature, and to automatically change from the first operational state to the second operational state, when the temperature of said each of the passive actuator elements changes from the first temperature to the second temperature.

US Pat. No. 10,527,048

SUBMERSIBLE PUMP AND BEARING ARRANGEMENT

SULZER MANAGEMENT AG, Wi...

9. A bearing arrangement for a submersible pump, comprising:a bearing cover;
a bearing flange; and
a bearing element having an inner bearing ring, an outer bearing ring and a roller element, the bearing element being configured to rotatably support a rotor shaft about an axis of rotation extending in a longitudinal direction so that the inner bearing ring is capable of rotating along with the rotor shaft in an operating state,
the bearing element being arranged at the bearing flange such that the bearing cover compresses the outer bearing ring in a longitudinal axial direction and such that a peripheral gap having a predefined axial width is formed in a radial direction between the outer bearing ring and the bearing cover and between the outer bearing ring and the bearing flange, the peripheral gap being a spark gap capable of explosion protection.