Fluid Biased, Movable Or Resilient Portion Patents (Class 415/113)
  • Patent number: 10690005
    Abstract: An exhaust-gas turbocharger for an internal combustion engine has a turbine housing, in which a turbine wheel with a shaft is arranged rotatably. The shaft is mounted rotatably in a bearing housing via at least one piston ring adjacently with respect to the turbine wheel. The bearing housing has a lubricant inflow and a pressureless lubricant outflow for lubricating the shaft, wherein an insulating washer is provided which is clamped in by the turbine housing and the bearing housing and has an opening which is connected to the lubricant outflow in a manner which conducts a lubricant. Passage of lubricant out of the bearing housing into the turbine housing is avoided.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: June 23, 2020
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Stefan Ehrmann, Harun Kara
  • Patent number: 10670033
    Abstract: A pump includes first and second impellers and a sealing element. The sealing element is arranged between the first and second impellers around the drive shaft. The sealing element has a first end transvers 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 has a length along an axis smaller than the 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 and second ends of the sealing element have first and second areas transverse to the axis, the first area being larger than the second area such that the force exerted by the lower pressure generated by the first impeller is substantially equal to the force exerted by the higher pressure generated by the second impeller.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: June 2, 2020
    Assignee: SULZER MANAGEMENT AG
    Inventor: Nils Hökby
  • Patent number: 10184356
    Abstract: A support structure for a gas turbine engine includes an axially extending portion that forms a loop. A radially extending portion extends radially inward from the axially extending portion. A plurality of retention members are attached to at least one of the axially extending portion and the radially extending portion for retaining a blade outer air seal.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: January 22, 2019
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventor: Michael G. McCaffrey
  • Patent number: 10132195
    Abstract: Cooling air extracted from a gas turbine engine compressor is sent to nozzle vane cooling passage inlets, through the cooling passages, and to purge tubes of a set of two or more vanes. A mixing chamber formed between the purge tubes in a diaphragm cavity receives fluid from the purge tubes and directs it through exit passage(s) formed through a wall of the mixing chamber to a surface of the diaphragm. The exit passage(s) can be inclined to induce a fluid velocity component substantially parallel to the surface and/or in a rotation direction of a turbine wheel.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: November 20, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Matthew Peter Scoffone, Jason Edward Albert, Michael Robert Berry, Mitchell Allan Merrill
  • Patent number: 10125632
    Abstract: Cooling air extracted from a gas turbine engine compressor is sent to a nozzle vane cooling passage inlet, through the cooling passage, and to a purge tube of the vane. A mixing chamber formed in a diaphragm cavity receives fluid from the purge tube and directs it through exit passage(s) formed through a side wall of the mixing chamber and/or diaphragm cavity to a diametral surface of the diaphragm. The exit passage(s) can be inclined to induce a fluid velocity component substantially parallel to the diametral surface and/or in a rotation direction of a turbine wheel adjacent the diaphragm.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: November 13, 2018
    Assignee: General Electric Company
    Inventors: Matthew Peter Scoffone, Jason Edward Albert, Michael Robert Berry, Mitchell Allan Merrill
  • Patent number: 10100669
    Abstract: A turbo machine, such as a gas turbine, includes a rotor, which rotates about a horizontal machine axis, and which is enclosed by a coaxial enclosure. The turbo machine includes a metal casing, whereby an electrical heating system is provided on the lower half of the metal casing. A safe operation is achieved by having the heating system configured as a redundant system.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: October 16, 2018
    Assignee: ANSALDO ENERGIA IP UK LIMITED
    Inventors: Janos Farkas, Giovanni Cataldi, Matteo Rocchi
  • Patent number: 9957830
    Abstract: A control ring extends circumferentially about a central axis. A plurality of circumferentially spaced carrier portions have a cavity receiving the control ring. There are circumferential gaps between the carrier portions. A blade outer air seal is mounted on the carrier portions radially inwardly of the control ring. The control ring maintains the carrier portions at a radially outwardly expanded position when heated by an electric heater.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: May 1, 2018
    Assignee: United Technologies Corporation
    Inventors: Michael G. McCaffrey, Mark Borja, Brandon T. Rouse, John R. Farris, Brian R. Pelletier, Thomas Almy, Igor S. Garcia
  • Patent number: 9945384
    Abstract: A turbo compressor includes: a compressor casing which accommodates impellers compressing gas by rotation; and a motor casing which accommodates a motor rotating the impellers, wherein the motor casing has a cylindrical main body part having a larger diameter than a mounting flange provided in the compressor casing, and the compressor casing and the motor casing are connected through an adapter member.
    Type: Grant
    Filed: July 14, 2014
    Date of Patent: April 17, 2018
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Kentarou Oda, Nobuyoshi Sakuma, Katsuya Fujisaku
  • Patent number: 9683456
    Abstract: In a heat shield for an exhaust gas turbocharger, by means of which at least a first area of the exhaust gas turbocharger is to be shielded against a second area in a heat insulating manner wherein the heat shield comprises at least one fastening structure by which the heat shield is attached to one of the housing parts of the exhaust gas turbocharger, the fastening structure is in the form of locking elements for interlocking the heat shield with the respective housing part. The invention also resides in an arrangement of a heat shield between two housing parts of an exhaust gas turbocharger in such a way that it is firmly attached to one housing part without contacting the other housing part.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: June 20, 2017
    Assignee: IHI CHARGING SYSTEMS INTERNATIONAL GMBH
    Inventors: Hermann Burmester, Joachim Delitz
  • Patent number: 9587507
    Abstract: An apparatus and method for controlling a clearance between the blades of a turbomachinery component and flow forming surface are disclosed herein, and includes controlling the clearance by moving the surface axially relative to the turbomachinery component. In one embodiment the apparatus includes an impeller rotatable about a first axis, a shroud encircling the impeller, and a first ring encircling the first axis. An actuator is operably engaged with the first ring to pivot the first ring about the first axis. The apparatus also includes at least one cam engaged with the first ring and at least one cam follower engaged with the shroud. Pivoting movement of the first ring about the first axis results in the at least one cam urging the at least one cam follower and the shroud along the first axis to vary a distance between the plurality of blades and the shroud.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: March 7, 2017
    Assignee: Rolls-Royce North American Technologies, Inc.
    Inventor: Nathan W. Ottow
  • Patent number: 9541008
    Abstract: A method of controlling the part-load performance of a turbine includes generating a bypass flow in the turbine by removing a portion of a compressed fluid from a compressor of the turbine, determining an operating load of the turbine, transmitting the bypass flow to a turbine section of the turbine; and selectively heating the bypass flow according to the determined operating load of the turbine.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: January 10, 2017
    Assignee: GENERAL ELECTRIC COMPANY
    Inventor: Robert Joseph Reed
  • Patent number: 9347319
    Abstract: Disclosed is a dental handpiece structure including a head having a turbine chamber, a rotor installed in the turbine chamber and having a transmission shaft, and a transmission element composed of a plurality of turbine vanes. A high-pressure air entering into the turbine chamber can push each turbine vane to drive and rotate the rotor, and a breach is upwardly formed between two adjacent turbine vanes. A head cap is covered onto the turbine chamber, and a circular groove is formed at the head cap and between an end surface facing the turbine chamber and the transmission element, and the circular groove and each breach are arranged opposite to each other for collecting the high-pressure air guided out from each breach to enhance the cutting force of the dental handpiece.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: May 24, 2016
    Assignee: THUNDER TIGER CORPORATION
    Inventor: Aling Lai
  • Patent number: 9291067
    Abstract: An aspirating face seal for use with a rotary machine includes a rotating seal ring including a radially outer surface that includes an oblique portion. A stationary seal ring is coupled proximate the rotating seal ring such that a first gap is defined therebetween. The stationary seal ring is movable along a centerline axis of the rotary machine between an open position and a sealed position, and includes an extension member that extends across the first gap. An auxiliary seal includes at least one seal tooth that includes a seal tooth tip. The at least one seal tooth extends radially inward from the extension member such that a second gap is defined between the seal tooth tip and the oblique portion.
    Type: Grant
    Filed: November 11, 2013
    Date of Patent: March 22, 2016
    Assignee: General Electric Company
    Inventors: Xiaoqing Zheng, Norman Arnold Turnquist, Michael Dennis Mack, Rahul Anil Bidkar, Azam Mihir Thatte
  • Patent number: 9091178
    Abstract: A sealing arrangement, for example for providing an intershaft seal between shafts of a gas turbine engine, includes an air-riding sealing ring disposed between runners. A buffer fluid, such as air, is conveyed to a buffer cavity through a passage in the sealing ring. The buffer air provides a positive pressure drop along fluid-riding gaps, preventing leakage across the sealing arrangement. The sealing ring may be a split carbon ring, and measures may be provided to minimize leakage of buffer air at the split.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: July 28, 2015
    Assignee: ROLLS-ROYCE PLC
    Inventor: Ingo H J Jahn
  • Patent number: 8979480
    Abstract: A plurality of blades are studded in a rotor disc integrated with the rotor along the circumferential direction of the rotor, a plurality of vanes are attached to a casing covering the rotor along the circumferential direction of the rotor, and an internal diaphragm disposed on rotor-side surfaces of the vanes in such a way that the internal diaphragm faces the rotor disc. The vanes and the blades adjacent to each other in the axial direction of the rotor form a turbine stage. A rotor-side cooling path is formed through the rotor disc in the axial direction of the rotor, and a diaphragm-side cooling path is formed through the internal diaphragm in the axial direction of the rotor, and a cooling medium flowing through the rotor-side cooling path diverts into the diaphragm-side cooling path and a labyrinth flow path provided between the internal diaphragm and the rotor.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: March 17, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Asako Inomata, Katsuya Yamashita, Kazuhiro Saito, Takao Inukai, Kazutaka Ikeda
  • Patent number: 8961102
    Abstract: A system and method for sealing a shaft disposed for rotation within a casing, where two axially-spaced seal rings of an oil film seal extend around the shaft and define a clearance therebetween. Oil is pumped into the clearance from an oil reservoir and a portion of the oil is received in an annular port defined in the casing between an outer labyrinth seal and one of the axially-spaced seal rings. The oil mixes with a process gas to for an oil and gas mixture. A blower is in fluid communication with the annular port and circulates the oil and gas mixture to a trap where the oil is separated from the process gas and a separated process gas is returned back to the annular port.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: February 24, 2015
    Assignee: Dresser-Rand Company
    Inventor: Philippe Auber
  • Patent number: 8944756
    Abstract: An example blade outer air seal assembly includes a blade outer air seal that is biased toward a second part. The blade outer air seal and the second part move together radially during operation. Radial inward movement of the blade outer air seal is limited exclusively by the second part during operation.
    Type: Grant
    Filed: July 15, 2011
    Date of Patent: February 3, 2015
    Assignee: United Technologies Corporation
    Inventor: Ken Lagueux
  • Patent number: 8939710
    Abstract: An exemplary turbomachine seal assembly includes a ring seal that has a radially-facing sealing surface, an axially-facing sealing surface, and a first tapered surface. The turbomachine seal assembly also includes a spacer that has a second tapered surface. The second tapered surface interfaces with the first tapered surface to bias the radially facing sealing surface and the axially facing sealing surface toward a sealing position.
    Type: Grant
    Filed: August 24, 2011
    Date of Patent: January 27, 2015
    Assignee: United Technologies Corporation
    Inventor: Scot A. Webb
  • Patent number: 8932001
    Abstract: Certain embodiments of the invention may include systems, methods and apparatus for providing a labyrinth seal. In an example embodiment, a method is provided for sealing a flow path between a stationary element and a rotating element of a turbomachine. The method can include disposing at least one fixture on an inner surface of a stationary element associated with the turbomachine; disposing a packing ring linked via a spring element to the fixture wherein the packing ring comprises at least one bore; and disposing, according to a predetermined profile, a plurality of interdigitated packing ring teeth and rotor teeth intermediate to the packing ring and the rotating element; wherein the bore, packing ring teeth, and rotor teeth, cooperate to counter a moment associated with one or more axial forces.
    Type: Grant
    Filed: September 6, 2011
    Date of Patent: January 13, 2015
    Assignee: General Electric Company
    Inventors: Xiaoqing Zheng, Hrishikesh Deo, Binayak Roy
  • Patent number: 8919784
    Abstract: A seal assembly for a fan duct metering valve disposed within a casing of a gas turbine engine includes a tab for extending through an opening in the casing and attaching to the valve, a carrier for extending into the opening and engaging the valve such that fluid does not leak between the valve and the carrier.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: December 30, 2014
    Assignee: United Technologies Corporation
    Inventors: Darren M. Smith, Judith F. Brooks
  • Publication number: 20140371919
    Abstract: A centrifugal compressor for compressing a refrigerant vapour in a refrigeration cycle. The compressor comprises an impeller drive shaft (28) supported by first and second radial bearings (32) for rotation within the compressor housing and an impeller assembly including at least one centrifugal impeller wheel mounted on the impeller drive shaft to rotate with the impeller drive shaft. The first and second radial bearings are hydrodynamic fluid bearings in which the bearing fluid is the refrigerant vapour. The compressor further comprising a conduit (36) for supplying a portion of the refrigerant vapour from the impeller assembly to the first and second fluid bearings.
    Type: Application
    Filed: December 20, 2012
    Publication date: December 18, 2014
    Inventor: Michael Creamer
  • Publication number: 20140356131
    Abstract: Disclosed herein is a fan module including an impeller cover having an intake member formed therein and covering one side of a housing, an impeller accommodated within the impeller cover and rotatably coupled to a rotational shaft of a motor accommodated in the housing, and a leakage reduction member positioned in an inner surface of the impeller cover to reduce a flow leakage between the impeller cover and the impeller.
    Type: Application
    Filed: May 30, 2014
    Publication date: December 4, 2014
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Chang Hwan Park, Seung On Kang, Ji Hae Yang, In Yeop Jung, Sang Ook Jun, Se Yeun Hwang
  • Patent number: 8882447
    Abstract: This hydraulic machine (1) has a wheel (2) mounted to move in rotation relative to a stationary structure (9) and about a stationary axis of rotation (X2), the wheel (2) being designed to pass a forced flow (E) of water therethrough. A hydrostatic bearing (100), provided between firstly an element (111) constrained to rotate with the wheel (2) and, secondly a portion (91) of the stationary structure (9), is disposed between a first zone (Z1) of the machine, which zone is in fluid communication with the forced flow (E) and in which zone, during operation, a pressure prevails that is similar to the pressure of the forced flow, and a second zone (Z2) of the machine that is isolated from the forced flow by said bearing.
    Type: Grant
    Filed: December 24, 2008
    Date of Patent: November 11, 2014
    Assignee: Alstom Renewable Technologies
    Inventors: Yves Bouvet, Jean Francois Bertea
  • Patent number: 8864443
    Abstract: A sealing structure in which free-cutting spacers on a sealing base plate and sealing fins on a rotor are opposed to each other is provided. The sealing base plate is disposed so as to be movable in an axial direction of the rotor. When a steam turbine increases in load, a pressure head moves in an axial steam-pressure loading direction of the rotor and the sealing base plate connected to the pressure head moves in the axial steam-pressure loading direction. Since the free-cutting spacers at positions opposed to those of the sealing fins existing after the movement of the sealing base plate are maintained in a non-contact state, clearances between the sealing fins and the free-cutting spacers are dimensionally minimized.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: October 21, 2014
    Assignee: Hitachi, Ltd.
    Inventors: Kenjiro Narita, Haruyuki Yamazaki, Takeshi Kudo, Kenichi Murata
  • Patent number: 8845267
    Abstract: A propeller pod drive for a vessel has at least one driveshaft for driving a propeller, at least one radial bearing arrangement for receiving radial forces, at least one axial bearing arrangement for receiving axial forces of the driveshaft. A thrust collar is supported in axial direction on at least one side in axial direction at a guide device, and a supporting structure for arranging the at least one radial bearing arrangement and the axial bearing arrangement. The guide device has at least three, axial sliding segments arranged in a segment guide and each of which has a sliding surface in contact with the thrust collar.
    Type: Grant
    Filed: July 23, 2009
    Date of Patent: September 30, 2014
    Assignee: RENK Aktiengesellschaft
    Inventors: Dierk Welz, Uwe Wenzel, Rainer Mischak
  • Patent number: 8807921
    Abstract: A bearing foil assembly includes a top foil, an intermediate foil, and a bump foil. The bump foil is provided with corrugations at circumferentially spaced locations. The bump foil has an end that is bent radially outwardly from a center of the foil assembly. The top foil has a bent portion extending radially outwardly and adjacent to the bent end of the bump foil. A first radius of curvature is defined to a curved portion leading into the bent portion at a first end adjacent to the bent end. A second radius of curvature is defined at an end of the bent portion on an end opposed to the bent end. A ratio of the first radius of curvature to the second radius of curvature is between 0.6 and 10. A bearing assembly, a shaft sub-assembly, an air machine, and a method of assembling a bearing into an air machine are also disclosed.
    Type: Grant
    Filed: April 4, 2011
    Date of Patent: August 19, 2014
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Ronald M. Struziak
  • Publication number: 20140219834
    Abstract: A lower plate includes a lower air inlet arranged radially outward of a bearing portion. In a plan view, a plane is divided into four regions by a first straight line which is parallel to an air outlet and crosses a central axis and a second straight line which is perpendicular to the air outlet and crosses the central axis, and one of the four regions in which a tongue portion is arranged is a first region, followed by a second region, a third region, and a fourth region in this order in a rotation direction of the blades. The air outlet is arranged to extend over both the first and fourth regions.
    Type: Application
    Filed: July 16, 2013
    Publication date: August 7, 2014
    Inventors: Takehito Tamaoka, Kazuhiko Fukushima, Kyoko Horise, Shinya Ishigami, Takahiro Nagai
  • Publication number: 20140178178
    Abstract: A dry seal apparatus (30) for a machine (10) includes a seal having a stationary portion (40) and a rotating portion (38); a space (44) disposed between the stationary and rotating portions; a biasing member (42) disposed proximate the stationary portion (40) and in contact therewith for applying a force to the stationary portion; and a labyrinth (37) proximate the rotating portion (38) and constructed and arranged for receiving a liquid for being vaporized before entering the space between the stationary and rotating portions of the seal. A related method is also provided.
    Type: Application
    Filed: December 16, 2013
    Publication date: June 26, 2014
    Inventors: Sebastien BESSON, Bruno Brethes
  • Publication number: 20140161589
    Abstract: Arrangements for promoting the restriction of fluid flow along a shaft via providing a deformable ring member in an annulus between the shaft and housing. In an initial general condition, the deformable ring member permits free fluid flow in a general direction along the shaft while in a second, constricted condition, the deformable ring closes or blocks a gap or clearance normally conducive to free fluid flow to thereby restrict fluid flow. An actuation medium, which can take any of a very wide variety of forms, preferably promotes constriction of the deformable ring member directly or indirectly.
    Type: Application
    Filed: February 14, 2014
    Publication date: June 12, 2014
    Applicant: CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION
    Inventors: David Jeffrey Janocko, Charles David Bice
  • Patent number: 8740543
    Abstract: A method of deploying offshore wind turbine assemblies includes mounting a wind turbine assembly horizontally on a vessel and transporting the wind turbine assembly to an offshore site. The wind turbine assembly is raised to a vertical condition at the site and attached to anchor weights. Blades are attached to the turbine head after the wind turbine assembly is in the vertical condition. In one embodiment, the wind turbine assembly can include a tower including tapered lower and upper sections joined together at their respective wide ends, a turbine head connected to the upper section, and a platform connected to the lower section. The platform includes a buoy tank partially filled with ballast to provide mass and buoyancy. A wave piercing cowling is rotatively attached to the lower section. The turbine head can include an adjustable journal bearing, scabbard blade mounts, and a gearless induction generator with flux adjusting capabilities.
    Type: Grant
    Filed: October 23, 2009
    Date of Patent: June 3, 2014
    Inventor: Lloyd E. Weaver
  • Patent number: 8727699
    Abstract: One embodiment of the present invention is a damping system for rotating machinery such as gas turbine engines. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for damping systems. Further embodiments, forms, features, aspects, benefits, and advantages of the present application shall become apparent from the description and figures provided herewith.
    Type: Grant
    Filed: October 14, 2010
    Date of Patent: May 20, 2014
    Assignees: Rolls-Royce Corporation, Rolls-Royce North American Technologies, Inc.
    Inventors: Daniel Kent Vetters, Timothy Hoffmann, Steven Arlen Klusman
  • Patent number: 8721263
    Abstract: A centrifugal pump includes at least one impeller (4) and at least one sealing arrangement arranged between the impeller (4) and a housing wall. The sealing arrangement seals a suction side of the impeller (4) with respect to a pressure side of the impeller (4). The sealing arrangement including a seal (12) fastened on the impeller (4) in a rotationally fixed manner.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: May 13, 2014
    Assignee: Grundfos Management a/s
    Inventor: Jorgen Schmidt
  • Patent number: 8657573
    Abstract: A circumferential sealing arrangement is disclosed herein. The circumferential sealing arrangement includes a seal runner operable to be fixed to a structure for concurrent rotation with the structure about an axis. The circumferential sealing arrangement also includes a housing that encircles the seal runner or is encircled by the seal runner. The circumferential sealing arrangement also includes a primary seal element at least partially disposed in the housing. The primary seal element includes a first surface cooperating with a second surface of the seal runner to form a circumferential seal between the primary seal element and the seal runner. The circumferential sealing arrangement also includes a secondary seal element positioned between the housing and the primary seal element on a first side of the primary seal element along the axis of rotation. A second side of the primary seal element along the axis of rotation opposite the first side seals against the housing.
    Type: Grant
    Filed: April 13, 2010
    Date of Patent: February 25, 2014
    Assignee: Rolls-Royce Corporation
    Inventor: John Munson
  • Patent number: 8568084
    Abstract: A system controls net thrust of a steam turbine having a stepped rotating shaft. A first leak off line fluidly couples a first stage of a turbine section to a packing near a stepped portion on the rotating shaft. A second leak off line fluidly couples a second stage of the turbine section that has a pressure different from the first stage to a step area immediately adjacent to the stepped portion, and a connection line fluidly couples the first leak off line to the second leak off line. The lines include control valves such that a controller can actively control the net thrust by regulating thrust pressure on the stepped portion using steam from the first and second stages of the turbine section. The controller may also prevent damage to an active retractable seal using the control valves.
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: October 29, 2013
    Assignee: General Electric Company
    Inventors: Xiaoqing Zheng, Bernard Arthur Couture, Jr., Casey William Jones, Binayak Roy
  • Patent number: 8568081
    Abstract: An electrical submersible pumping system having a pump, a motor, a shaft connecting the pump and motor. Coaxially stacked rotating impellers and stationary diffusers are coaxially housed within the pump. Radial ports are formed in a hub of the diffusers that direct fluid pressurized by an impeller to a cavity formed on the shroud of the impeller. Axial ports are formed in the shrouds of the impellers that direct fluid from the cavity to a fluid flow passage within the impeller. Strategic placement and sizing of the radial and axial ports balances thrust forces exerted onto the impeller.
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: October 29, 2013
    Assignee: Baker Hughes Incorporated
    Inventors: Baojun Song, David Chilcoat
  • Patent number: 8540479
    Abstract: An active retractable seal assembly for use between rotating and non-rotating turbo machinery components including: a plurality of seal rings mounted to the non-rotating component, the seal rings movable toward and away from the rotating component between respective closed and open positions as a function of pressure drop across the seal rings, wherein the seal rings are normally in the open position; and a fluid bypass circuit for directing fluid around one or more of the plurality of seal rings to reduce the pressure drop across the one or more of the seal rings, thereby causing the one or more seal rings to move towards the open position under the action of spring(s) or actuator(s).
    Type: Grant
    Filed: January 11, 2007
    Date of Patent: September 24, 2013
    Assignee: General Electric Company
    Inventors: Shorya Awtar, Timothy R. Kemp, Kurt N. Laurer, Frederick G. Baily
  • Patent number: 8480352
    Abstract: A system controls net thrust of a steam turbine having a stepped rotating shaft. A first leak off line fluidly couples a first stage of a turbine section to a packing upstream of a stepped portion on the rotating shaft. A second leak off line fluidly couples a second stage of the turbine section that is subsequent to the first stage to a step area upstream of the stepped portion, and a connection line fluidly couples the first leak off line to the second leak off line. The lines include control valves such that a controller can actively control the net thrust by regulating thrust pressure on the stepped portion using steam from the first and second stages of the turbine section. The controller may also prevent damage to an active retractable seal using the control valves.
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: July 9, 2013
    Assignee: General Electric Company
    Inventors: Xiaoqing Zheng, Bernard Arthur Couture, Jr., Casey William Jones, Binayak Roy
  • Patent number: 8443514
    Abstract: A maintenance method of a gas turbine unit, having a first stator element provided with first connecting holes contemplates replacing a second stator element, provided with second connecting holes and connected to the first stator element by means of coupling pins insertable into the first and the second connecting holes, with a third spare stator element provided with third connecting holes; and coupling the first stator element to the third spare stator element by means of eccentric coupling pins and eccentric bushes, each of which is selectively insertable in the first and the third connecting holes.
    Type: Grant
    Filed: April 1, 2008
    Date of Patent: May 21, 2013
    Assignee: Ansaldo Energia S.p.A.
    Inventor: Gianluigi Bertino
  • Patent number: 8342796
    Abstract: Damping systems and engines including the damping systems are provided. In one embodiment, and by way of example only, the damping system includes a rotor, a bearing assembly mounted to the rotor, a spring cage disposed around the bearing assembly, an axially-extending housing surrounding the spring cage, a first squeeze film damper formed between the bearing assembly and the spring cage, and a second squeeze film damper formed between the spring cage and the axially-extending housing.
    Type: Grant
    Filed: April 29, 2008
    Date of Patent: January 1, 2013
    Assignee: Honeywell International Inc.
    Inventors: Douglas Spencer, Mohsiul Alam, Griff Kinsinger
  • Patent number: 8312702
    Abstract: An oil recovery device is disclosed. The oil recovery device includes two bearing supports mounted on an inter-turbine casing, a first bearing and a second bearing mounted on the bearing supports, a low-pressure turbine journal mounted rotating with respect to the inter-turbine casing, a fixed ferrule, and an oil passage provided in the low-pressure turbine journal making it possible to discharge the oil inside the fixed ferrule. The ferrule is preferentially widened from the end at which the oil is discharged.
    Type: Grant
    Filed: February 2, 2009
    Date of Patent: November 20, 2012
    Assignee: SNECMA
    Inventors: Jacques René Bart, Serge René Morreale, Jean-Luc Soupizon
  • Patent number: 8292508
    Abstract: A bearing arrangement includes a bearing outer element that defines a first plurality of races opening radially inwardly, a bearing inner element that defines a second plurality of races opening radially outwardly, and a bearing middle element defining a third plurality of races at its radially outer surface thereof and a fourth plurality of races at its radially inner surface thereof. Rolling elements are receivable in the races. The bearing middle element includes an axial protrusion at least at one end thereof that can be received in a housing with respect to which the bearing outer and inner elements are rotatable.
    Type: Grant
    Filed: January 15, 2009
    Date of Patent: October 23, 2012
    Assignee: NSK Corporation
    Inventors: David Earl Spieth, Kevin Lueschen, Michael Gregory Mshar, Mark A. Thorpe
  • Patent number: 8186938
    Abstract: A gas turbine engine comprising a rotor and a stator which define first, second and third cavities; the rotor and stator define a seal therebetween and which is located for sealing between the second and third cavities, the rotor comprises an aperture through which a gas flow passes from the first cavity to the second cavity characterized in that the seal comprises a deflector that extends axially over at least a portion of the aperture to deflect at least a part of the gas towards the rotor.
    Type: Grant
    Filed: November 4, 2008
    Date of Patent: May 29, 2012
    Assignee: Rolls-Royce PLC
    Inventors: Colin Young, Guy David Snowsill, Paul William Ferra, Clive Peter Gravett
  • Publication number: 20120128466
    Abstract: The present invention relates to a system for lubricating a turbomachine comprising at least one enclosure, called non-ventilated, with members to be lubricated and an air-oil mixture, said enclosure being closed and pressurized using dynamic pressure seals supplied with compressed air to create an airflow from the outside toward the inside of the enclosure, said enclosure comprising an outlet for conveying the air-oil mixture toward an air/oil separator, said separator being provided with an suction function favoring the flow of the air-oil mixture between the enclosure and the separator, characterized in that the lubrication system comprises additional suction means.
    Type: Application
    Filed: November 23, 2011
    Publication date: May 24, 2012
    Applicant: Techspace Aero S.A.
    Inventors: Nicolas Raimarckers, Albert Cornet, Steve Houziaux, Bruno Servais, Geoffroy Ricardou
  • Patent number: 8177475
    Abstract: A seal assembly for deflecting contaminated fluid flowing through the seal assembly from an upstream space to a downstream space includes an annular housing, at least one vent hole peripherally disposed on the annular housing, a first set of seals disposed within the annular housing adjacent to the downstream space, the first set of seals having an inclined surface to deflect the flow of contaminated fluid through the at least one vent hole, and a second set of seals mounted on the shaft, disposed within the annular housing, adjacent to the first set of seals and adjacent to the upstream space. The second set of seals may have larger inside diameter than the first set of seals. The seal assembly may prevent contaminated fluid from entering an air bearing cooling circuit, thereby preventing bearing wear, erosion and failure.
    Type: Grant
    Filed: May 2, 2008
    Date of Patent: May 15, 2012
    Assignee: Honeywell International, Inc.
    Inventors: Fidel Manalo Joco, Marshall Saville, Alan Kang
  • Patent number: 8157502
    Abstract: Pump (1) comprising a rotary shaft (30), a bearing housing (80) that is fixed relative to the rotary shaft, at least one rolling bearing (70) the inner ring (71) of which is connected to the said rotary shaft and the outer ring (76) of which is able to slide in this housing along the axis of rotation of the rotary shaft. The bearing housing (80) comprises a shoulder (81) situated on one side of this bearing and able rigidly to prevent translational movement of the outer ring (76) along the axis of rotation, and a deformable elastic device (100) fixed to the housing on the other side of the bearing (70) so that the bearing lies between the shoulder and the elastic device.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: April 17, 2012
    Assignee: SNECMA
    Inventors: Emmanuel Edeline, Charles Marciquet, Laurent Fabbri, Fabien Wahl
  • Publication number: 20120051887
    Abstract: The present invention provides a pump comprising a regenerative pumping mechanism. A rotor of the pump has a generally disc-shaped pump rotor mounted on an axial driveshaft for rotation relative to a stator, the pump rotor having rotor formations disposed in a surface and defining at least a portion of a flow path for pumping gas from an inlet to an outlet. The rotor formations are formed between the pump rotor and the stator of the pumping mechanism. The pump rotor and the stator comprise an axial gas bearing arrangement for controlling axial clearance between the rotor and the stator during pump operation. Thus, this configuration of pump provides a gas bearing disposed on the rotor which enables an improved control of axial clearance between the pump's rotor and stator components.
    Type: Application
    Filed: May 18, 2010
    Publication date: March 1, 2012
    Applicant: Edwards Limited
    Inventor: Nigel Paul Schofield
  • Patent number: 8096774
    Abstract: The invention relates to a turbocharger (15) comprising a bearing housing (7) which mounts a rotor shaft (12) and has a bearing-housing oil space (13); comprising a compressor housing which is connected to the bearing housing (7) and has a compressor space (14); and comprising a sealing device (20) which is provided for sealing the bearing-housing oil space (13) relative to the compressor space (14) and which has a sealing ring (1) which is arranged in a fixed position in the bearing housing (7) and has two end faces (17, 17?) which interact with associated end faces (10) and (11) of a disc (9) and a sealing bush (16) which are fastened to the rotor shaft (12), wherein the sealing ring (1) is arranged with axial play on the rotor shaft (12) between the disc (9) and the sealing bush (16); and air-delivery devices (2, 3) oriented in opposition are arranged in the end faces (17, 17?) of the sealing ring (1).
    Type: Grant
    Filed: May 23, 2006
    Date of Patent: January 17, 2012
    Assignees: BorgWarner Inc., KACO GmbH + Co. KG
    Inventors: Dirk Frankenstein, Markus Schwerdtieger, Bruno Ferling
  • Publication number: 20120003076
    Abstract: A method for assembling a rotating machine includes providing a rotating element including a plurality of rotor wheels. The method also includes positioning the rotating element such that at least a portion of a stationary portion extends at least partially about the rotating element. The method further includes assembling an interstage seal mechanism including coupling at least a portion of a first hook device to the rotating element, and also including coupling at least a portion of a second hook device to the first hook device. The first hook device and the second hook device are radially inboard of at least a portion of the stationary portion.
    Type: Application
    Filed: June 30, 2010
    Publication date: January 5, 2012
    Inventors: Josef Scott Cummins, Ian David Wilson
  • Publication number: 20110318164
    Abstract: The means of sealing the compressor wheel with respect to the bearing housing includes an annular sealing element which forms a sealing boundary face with a shaft edge and to which a spring force is applied in the direction of the shaft edge. The external spring force neither compensates or amplifies the pressure forces acting on the sealing element, irrespective of the direction of the difference in pressure. As a result, the sealing of the oil space in the bearing housing of the exhaust gas turbocharger with respect to the shaft is not influenced, or is influenced only to a small degree, by the pressure fluctuations in the wheel back space of the compressor.
    Type: Application
    Filed: June 23, 2011
    Publication date: December 29, 2011
    Applicant: ABB Turbo Systems AG
    Inventors: Adrian Kopp, Christoph Häge, Martin Thiele
  • Publication number: 20110318163
    Abstract: In a centrifugal compressor, for the purpose of preventing the positions of a diaphragm and a head flange in a radial direction from moving with respect to a casing, suppressing the generation of an unstable fluid force in a seal and the contact of the seal with a rotor to prevent the unstable vibration of the rotor and enabling an efficient and stable operation even on high-pressure conditions, there is provided a barrel-shaped centrifugal compressor including a casing, a diaphragm located in the casing to define a flow channel, and a head flange attached to the end of the casing by a shear key, wherein in the inner peripheral surface of the casing and the outer peripheral surface of abutment portions of the diaphragm and the head flange in which they are abutted on the inner peripheral surface of the casing, sliding key grooves which are vertical to the surfaces are provided at least two portions in a peripheral direction, and sliding keys are provided in the key grooves.
    Type: Application
    Filed: June 22, 2011
    Publication date: December 29, 2011
    Inventors: Yohei Magara, Kazuyuki Yamaguchi, Mitsuhiro Narita, Haruo Miura, Naohiko Takahashi, Akira Endo