Bearing, Seal, Or Liner Between Runner Portion And Static Part Patents (Class 415/170.1)
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Publication number: 20120171021Abstract: A turbomachine includes a compressor having a cartridge that is configured to slide in and out of an external casing. The turbomachine further includes an electrical motor having a motor shaft configured to be connected to the compressor shaft. A conduit is configured to extend through the statoric part of the compressor or the motor, from a first magnetic bearing to the second magnetic bearing. The conduit includes conduit electrical cables provided inside the conduit and extending from a first end of the conduit to a second end of the conduit; and electrical cables connecting one of the first and second magnetic bearings to an external connector via the conduit electrical cables of the conduit.Type: ApplicationFiled: December 16, 2011Publication date: July 5, 2012Inventors: Massimiliano MARIOTTI, Luciano Mei, Silvio Glachetti
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Publication number: 20120156010Abstract: According to an embodiment, an upper-side bearing cover 50a configuring a bearing stand cover 50 is provided with an upper-side large-diameter semicylindrical body 70 which is disposed to cover the periphery of a bearing stand 31 and has a semicylindrical shape with its one end closed, and an upper-side small-diameter semicylindrical body 71 having a semicylindrical shape which is integrally formed from the other open end of the upper-side large-diameter semicylindrical body 70 to cover a rear gland packing portion 40 and which has an outer diameter smaller than that of the upper-side large-diameter semicylindrical body 70. A reduced cylindrical body 72 is disposed between the upper-side large-diameter semicylindrical body 70 and the upper-side small-diameter semicylindrical body 71. An upper-side passage forming semicylindrical body 75 is configured as a different body to cover the peripheries of the upper-side small-diameter semicylindrical body 71 and the reduced cylindrical body 72.Type: ApplicationFiled: November 22, 2011Publication date: June 21, 2012Inventor: Toshio MORIMOTO
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Publication number: 20120156009Abstract: A fan shield for an air cycle machine includes a fan shield body in the general shape of a frustum of a cone having curved sides. The curved sides define a radius of curvature and a center point of curvature that corresponds to the radius of curvature. The center point of curvature is an axial distance from a large end of the fan shield body and a radial distance from the central axis such that a ratio of the radial distance to the axial distance is between 1.160 and 1.360. A bearing housing includes a body that defines a cylindrical portion and an annular flange at one end. The annular flange includes a first attachment opening, a second attachment opening and a third attachment opening that are non-uniformly circumferentially spaced around the flange.Type: ApplicationFiled: December 21, 2010Publication date: June 21, 2012Inventors: Darryl A. Colson, Seth E. Rosen, Eric Chrabascz
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Publication number: 20120156008Abstract: An air cycle machine includes turbine and compressor housings respectively having a turbine and a compressor. An insulator seal plate is fastened between the turbine and compressor housings. The insulator seal plate includes a bore. A seal has an outer diameter that engages the bore. The seal also includes an inner diameter provided between lateral sides defining a first width. The inner diameter provides a seal and configured to engage a rotating surface. The outer diameter to the inner diameter provides a first ratio of 1.30-1.31. The inner diameter to the first width provides a second ratio of 1.59-1.61. A rotor shaft is disposed in the seal and includes knife edges extending from the rotor shaft to the seal land. The rotor shaft supports the turbine and the compressor.Type: ApplicationFiled: December 21, 2010Publication date: June 21, 2012Inventors: Eric Chrabascz, Darryl A. Colson, Seth E. Rosen
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Publication number: 20120148388Abstract: An annulus filler for mounting to a rotor disc of a gas turbine engine and for bridging the gap between two adjacent blades attached to the rotor disc. The annulus filler has a body portion including a lid which has a leading edge, a trailing edge and opposing side edges which connect respective ends of the leading and trailing edges. The lid defines an airflow surface for air being drawn through the engine. The annulus filler further has one or more attachment formations which, in use, connect the body portion to the rotor disc. The lid is configured such that the stiffness of the lid under compressive loading exerted on the opposing side edges by sideways blade movement is greater at the leading edge than at the trailing edge.Type: ApplicationFiled: December 5, 2011Publication date: June 14, 2012Applicant: ROLLS-ROYCE PLCInventor: Kristofer J. BOTTOME
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Patent number: 8197183Abstract: A turbocharger thrust bearing assembly, which maintains a constant relationship between the thrust faces, for example by use of gimbal or spherical segment geometry. Spherical geometry, while more difficult to manufacture than that of a flat thrust bearing, provides a more constant relationship between the thrust pads and thrust washers than is possible with a typical flat thrust bearing. As a consequence of this more constant relationship the thrust bearing operates with less oil flow, which ultimately may reduce vehicle emissions.Type: GrantFiled: July 1, 2009Date of Patent: June 12, 2012Assignee: BorgWarner Inc.Inventors: Daniel Ward, Allan Kelly
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Publication number: 20120114466Abstract: The present application provides a sealing assembly for use between a first component and a second component of a rotary machine. The sealing assembly may include a first sealing segment having a first end with a first angled surface and a second sealing segment having a second end with a second angled surface. The first angled surface of the first end of the first sealing segment meets the second angled surface of the second end of the second sealing segment at a joint.Type: ApplicationFiled: November 5, 2010Publication date: May 10, 2012Applicant: GENERAL ELECTRIC COMPANYInventor: Xiaoqing Zheng
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Publication number: 20120099968Abstract: An abrasive coating on a rotor shaft interacts with cantilevered vanes to form an abradable air seal in a turbine engine. The abrasive coating includes a metal bond coat, and an abrasive layer containing a plurality of abrasive grit particles in a ceramic matrix. The grit particles may be selected from cubic boron nitride (CBN), zirconia, alumina, silicon carbide, diamond and mixtures thereof.Type: ApplicationFiled: October 25, 2010Publication date: April 26, 2012Applicant: UNITED TECHNOLOGIES CORPORATIONInventors: Paul H. Zajchowski, Christopher W. Strock, Matthew E. Bintz
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Publication number: 20120099969Abstract: One embodiment of the present invention is a vane assembly for a gas turbine engine. Another embodiment of the present invention is a damper seal that may be employed in conjunction with a vane assembly of a gas turbine engine. Other embodiments include apparatuses, systems, devices, hardware, methods and combinations for vane assemblies and the sealing and damping thereof. Further embodiments, forms, features, aspects, benefits and advantages of the present application shall become apparent from the description and figures provided herewith.Type: ApplicationFiled: December 22, 2010Publication date: April 26, 2012Inventor: Justin Gilman
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Patent number: 8157511Abstract: An arrangement for sealing a turbine shroud gas path duct interface of a turbine engine comprises a static shroud surrounding a rotatable airfoil array and an annular duct downstream of the shroud with respect to a gas flow passing through the gas path. The shroud and the duct define a portion of the gas path for directing the gas flow, having an axially extending interface gap between the shroud and duct. An annular seal in use engages both the shroud and the duct, thereby sealing the annular gap.Type: GrantFiled: September 30, 2008Date of Patent: April 17, 2012Assignee: Pratt & Whitney Canada Corp.Inventors: John Pietrobon, Eric Durocher
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Patent number: 8142136Abstract: An oil-sealing arrangement for cooling fan includes a fan housing provided with a central hollow pipe having a hollow bearing fitted therein in a clearance fit relation, and the bearing having a front end formed into a forward tapered projection; and a blade carrier including a fitting cylinder with a rearward tapered projection. When the fitting cylinder is extended into the hollow pipe on the fan housing, the rearward tapered projection and the forward tapered projection together define a seeped oil chamber between them. When the cooling fan operates, lubricating oil seeped out of the hollow pipe along the bearing is recovered in the seeped oil chamber and flows back to the hollow pipe via the clearance between the bearing and the hollow pipe without being centrifugally thrown out of the cooling fan, allowing the cooling fan to have extended usable life.Type: GrantFiled: May 21, 2008Date of Patent: March 27, 2012Assignee: Asia Vital Components Co., Ltd.Inventor: Hong-Guang Li
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Patent number: 8141879Abstract: A side seal for sealing the side edges of adjacent combustors of a turbine engine include extended ends. The extended ends of the side seal abut and seal against inner and outer circumferential seals to prevent leakage of combustion gases.Type: GrantFiled: July 20, 2009Date of Patent: March 27, 2012Assignee: General Electric CompanyInventors: Krishna Kumar Venkataraman, Kevin Weston McMahan, Timur R. Repikov, Kara Edwards
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Publication number: 20120057966Abstract: A fan includes a motor base, a bearing, an impeller, a stator and a magnetic element. The motor base has a bearing stand in a center portion thereof. The bearing is accommodated within the bearing stand. The impeller includes a metallic case, a hub, plural blades and a rotating shaft. The metallic case has a top surface and a sidewall. The hub is sheathed around the metallic case. The blades are disposed around an outer periphery of the hub. The rotating shaft is protruded from a center portion of the top surface and penetrated through the bearing stand, wherein no raised ring structure is formed in the top surface of the metallic case, and the rotating shaft and the metallic case are jointed together by a laser welding process. The magnetic element is disposed on an inner wall of the metallic case and aligned with the stator.Type: ApplicationFiled: September 1, 2011Publication date: March 8, 2012Inventors: Chiu-Kung Chen, Chun-Chih Wang, Bing-Feng Wang
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Patent number: 8128352Abstract: The invention relates to a turbomachine thermomechanical part forming a body of revolution about a longitudinal axis, and including at least one abradable ring for a labyrinth seal. In characteristic manner, the abradable ring is made up of angular sectors that present different stiffnesses between adjacent pairs of sectors. The invention is applicable to a compressor, a turbine, or to a rotor and stator assembly.Type: GrantFiled: April 23, 2009Date of Patent: March 6, 2012Assignee: SNECMAInventors: Mathieu Caucheteux, Francois Maurice Garcin, Jean-Pierre Francois Lombard, Nicolas Christian Triconnet
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Patent number: 8128343Abstract: A configuration of seals disposed around and between a plurality of ring segments (10) arrayed annularly about the periphery of moving blades in a gas turbine engine. The seals function to retain coolant in the plenum (18) within each of the ring segments (10). The seals are disposed atop a substrate (16A), which forms the top of the plenum (18). The first seal (25) is made of a piece of sheet material and seals the gap between adjacent ring segments. This seal has an edge (25A) thereof creased for mating with a similar seal on an adjacent ring segment. A second seal (27), which is also made of sheet material, seals the ends of the plenum (18) of the ring segments (10). Lastly, a third seal (29), which is also made of a piece of sheet material, seals the sides of the second seal (27).Type: GrantFiled: October 30, 2007Date of Patent: March 6, 2012Assignee: Siemens Energy, Inc.Inventors: Anthony L. Schiavo, Malberto F. Gonzalez
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Publication number: 20120051893Abstract: A vacuum pump rotor suitable for use in a vacuum pump is described for a vacuum pump that comprises a regenerative pumping mechanism. The rotor has a generally disc-shaped configuration and is mounted on an axial shaft for rotation relative to a stator of a vacuum pump. The rotor has a first and second opposing surface on which a rotor formations are disposed, each rotor formation defining a portion of a pump stage formed between the pump rotor and a stator for pumping gas from an inlet to an outlet in the same radial direction along the first and second opposing surface. A conduit is provided to interconnect the portions of the pump stage and assist with pressure imbalance that might occur on opposing sides of the rotor.Type: ApplicationFiled: May 18, 2010Publication date: March 1, 2012Applicant: EDWARDS LIMITEDInventors: Nigel Paul Schofield, Michael Chung Kau Liu
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Publication number: 20120051892Abstract: There is provided a designing method of a wind turbine rotor which includes a rotor head, a bearing provided on the rotor head and a wind turbine blade attached to the bearing. The wind turbine rotor designing method includes: providing operation environment data indicative of an operation environment of a wind turbine generator including the wind turbine rotor and design data of the wind turbine blade; calculating a position of a center of mass of the wind turbine blade in each position in a lengthwise direction of the wind turbine blade in the operation environment from the operation environment data and the design data; and calculating an evaluation value which is a value depending on an integral value obtained by integrating a product of the calculated position of the center of mass of the blade and a mass per unit length at each position in a lengthwise direction of the wind turbine blade from a blade root portion of the wind turbine blade to a blade tip end of the same.Type: ApplicationFiled: November 30, 2010Publication date: March 1, 2012Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Hideyasu FUJIOKA, Akihiro NAKAMURA, Takao KUROIWA, Yoshiyuki HAYASHI, Yoshihiko HAYASHI
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Patent number: 8113771Abstract: A spring assembly for a retractable turbine rotor seal supported in an arcuate segment may include in one embodiment a first radially inner restraining plate having a lower surface adapted to engage a surface of a turbine stator, and a flat upper surface provide with an upstanding hub; a second radially outer restraining plate having a flat lower surface and an upper surface adapted to engage a surface of the arcuate segment, the radially outer restraining plate formed with an opening receiving the upstanding hub; and at least one spring telescoped over the upstanding hub and exerting a radially outward biasing force on the second radially outer restraining plate, and adapted to exert a radially outward retracting force on the arcuate segment.Type: GrantFiled: March 20, 2009Date of Patent: February 14, 2012Assignee: General Electric CompanyInventors: Norman Arnold Turnquist, Shorya nmn Awtar, Mustafa Gursoy, Kartik Mangudi Varadarajan
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Publication number: 20120034072Abstract: A seal assembly arranged adjacent to a primary flow region, the seal assembly including: first and second components; a seal arranged between the first and second components to seal a secondary flow region from the primary flow region; and a first recess portion provided in the first component and arranged adjacent to the seal and the primary flow region, the first recess portion further being arranged to receive flow from at least one of the primary flow region and the secondary flow region and shed flow to the primary flow region, wherein the first recess portion is configured to promote a first flow feature within the first recess portion, the first flow feature flowing with a portion of the first flow feature adjacent to the primary flow region and the portion of the first flow feature being shed to the primary flow region in substantially the same direction as the flow in the primary flow region.Type: ApplicationFiled: July 6, 2011Publication date: February 9, 2012Applicant: ROLLS-ROYCE PLCInventors: Adam M. BAGNALL, Ross D. MAXWELL
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Publication number: 20120034073Abstract: To solve heat soak and reduced heat rejection capability problems in turbochargers with rolling element bearings (REBs), the REB cartridge is mounted to the bearing housing in a way that is not rigid, thus allows for an oil damping film, but, at the same time, the REB cartridge is held both axially, to transfer thrust loads to the bearing housing, and rotationally, so that the REB cartridge does not rotate relative to the bearing housing, using male or female features in the REB and corresponding female or male features associated with the bearing bore or the turbine face of the bearing housing closure.Type: ApplicationFiled: April 16, 2010Publication date: February 9, 2012Applicant: BORGWARNER INC.Inventors: Timothy House, Paul Diemer, Allan Kelly, Augustine Cavagnaro
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Patent number: 8105024Abstract: A seal assembly for a gas turbine is arranged in grooves of a rotor heat shield having several bends. The assembly comprises four seal portions overlapping one another and extending in the axial, radial, and circumferential direction with respect to the turbine rotor. A holding means retains the radial sections of one seal portion allowing a limited movement of said seal portion independent of another seal portion. The independent movement assures contact of the individual seal portions with all mating surfaces of the rotor heat shield and improved sealing function regardless of displacements of the rotor heat shield and tolerances of turbine parts.Type: GrantFiled: September 24, 2008Date of Patent: January 31, 2012Assignee: Alstom Technology LtdInventors: Alexander Khanin, Arkadi Fokine, Maxim Konter, Sergey Vorontsov
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Patent number: 8105023Abstract: A steam turbine has: a casing; a rotor rotatably arranged in the casing; a nozzle diaphragm concentrically arranged with respect to the rotor, the nozzle diaphragm being engaged with the casing; moving blades arranged in circumferential direction on outer circumference of the rotor at positions adjacent to the nozzle diaphragm; seal strips circumferentially extending on tips of the moving blades, the seal strips protruding in radial outward direction; and an abradable structure rigidly connected to the nozzle diaphragm. The abradable structure faces the seal strips in radial direction at a facing surface, and has an abradable part made of an abradable material arranged at the facing surface.Type: GrantFiled: January 2, 2008Date of Patent: January 31, 2012Assignee: Kabushiki Kaisha ToshibaInventors: Kazutaka Ikeda, Takashi Sasaki, Satoru Asai, Hitoshi Sakakida, Kenji Kamimura, Ryohei Ogino, Yasushi Ooishi
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Publication number: 20120020777Abstract: Durable pumps for abrasives are provided. In one implementation, an example centrifugal pump or pump stage for subsurface operation has a thrust washer located inside the circumference of a close-fitting clearance seal between an impeller shroud and the diffuser. The relocation of the thrust washer allows the clearance seal to protect the thrust washer from abrasives while the thrust washer supports the impeller against the reaction forces of axial fluid flow. In one implementation, the radius or size of a thrust washer or other seal-like feature is reduced in order to increase exposure of the bottom impeller shroud to pressured fluid, thus balancing pressure at the top and bottom of the impeller to decrease friction between the impeller and the thrust washer. Reducing the radius of the thrust washer also reduces surface area of the washer subject to friction and reduces the moment arm of a braking torque on the rotating impeller, thereby reducing power loss in the pump.Type: ApplicationFiled: June 30, 2011Publication date: January 26, 2012Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventor: David M. Eslinger
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Publication number: 20120014783Abstract: Improvements in the operation and maintenance of non-clogging pumps are provided which increase pump efficiencies through improved impeller design and vacuum assembly design, and which increase seal lubrication efficiencies through improved seal lubricant reservoir system design.Type: ApplicationFiled: July 18, 2011Publication date: January 19, 2012Applicant: ENVIROTECH PUMPSYSTEMS, INC.Inventors: James G. Shaw, James Northrup, Martin Miller
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Publication number: 20120014782Abstract: An assembly for a turbocharger that includes a bearing housing with a cylindrical portion with a bore configured for receipt of a bearing, an extension that extends radially outwardly from the cylindrical portion to a base, the base configured with one or more features for securing the bearing housing to another component, a compressor fitting, a turbine fitting, and lubricant flow paths; and a fluid jacket that includes a cylindrical wall configured for placement over at least a portion of the cylindrical portion of the bearing housing where the cylindrical wall includes a recess configured to accommodate at least a portion of the extension of the bearing housing, a fluid inlet, and a fluid outlet. Various other examples of devices, assemblies, systems, methods, etc., are also disclosed.Type: ApplicationFiled: July 16, 2010Publication date: January 19, 2012Inventors: Dominique Petitjean, Guillaume Dupont, Anthony Ruquart, Philippe Arnold
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Patent number: 8092179Abstract: An example turbine blade includes a blade having an airfoil profile extending radially toward a blade tip. A shelf is established in the blade tip. A sealing portion of the blade tip extends radially past a floor of the shelf. The sealing portion extends from a blade tip leading edge to a blade tip trailing edge. A groove is established in the blade tip. The groove extends from adjacent the shelf to adjacent the blade tip trailing edge. The groove is configured to communicate a fluid from a position adjacent the shelf to a position adjacent the blade tip trailing edge.Type: GrantFiled: March 12, 2009Date of Patent: January 10, 2012Assignee: United Technologies CorporationInventors: Corneil S. Paauwe, Brandon W. Spangler
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Publication number: 20110318170Abstract: A turbine stage for a turbomachine, the stage comprising a rotor wheel mounted inside a sectorized ring carried by an outer casing, and a sectorized nozzle fastened to the casing downstream from the wheel, each ring sector having a downstream end that is held bearing radially outwards against a cylindrical rail of the casing by means of the nozzle, the casing rail including an annular row of through radial notches reducing the areas for heat exchange by conduction both between the casing and the ring sectors and between the casing and the nozzle.Type: ApplicationFiled: June 27, 2011Publication date: December 29, 2011Applicant: SNECMAInventors: Fabrice Marcel Noël GARIN, Alain Dominique GENDRAUD, Thierry LEQUITTE, Sebastien Jean Laurent PRESTEL
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Patent number: 8083468Abstract: A high-speed turbomachine includes a magnetic bearing (22, 23) and a retainer bearing for mounting the rotor. The retainer bearing is embodied as a sliding bearing (26, 27) and encompasses a bearing shell (28) at the stator end, a bearing shaft (20) at the rotor end, and an intermediate bushing (30) between the bearing shell (28) and the bearing shaft (20). The intermediate bushing (30) is spaced apart from both the bearing shaft (20) and the bearing shell (28) by a circular gap (33, 34). The intermediate bushing (30) is rotatable relative to the bearing shell (28) and the bearing shaft (20). As a result of this design, the sliding bearing (26) is provided with two pairs of sliding surfaces, onto which all occurring dynamic forces are distributed such that wear is significantly reduced, thus allowing sliding bearings to be used as retainer bearings in a magnetically mounted high-speed turbomachine.Type: GrantFiled: July 24, 2006Date of Patent: December 27, 2011Assignee: Oerlikon Leybold Vacuum GmbHInventor: Roland Blumenthal
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Publication number: 20110311352Abstract: The disclosure refers to a method and apparatus for checking the bearing alignment of a rotor of a gas turbine or steam turbine having a rotor with a radial offset and a radial offset surface and in a bearing shell, which supports the rotor, with a radial, at least in sections, end surface, wherein the radial offset surface and the radial end surface face the free end of the rotor. The radial offset is arranged in the bearing shell and offset towards the free end of the rotor. The degree of offset in the axial direction with regard to the rotor is measured at least two different circumferential positions around the rotor periphery in order to determine the alignment of the rotor. Differences in the degree of offset at different circumferential positions are used as measurement for the bearing alignment.Type: ApplicationFiled: June 17, 2011Publication date: December 22, 2011Applicant: ALSTOM Technology LtdInventors: Eduard BRÃœHWILER, Marc RAUCH
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Publication number: 20110311351Abstract: Disclosed herein are several embodiments for shroud arrangements to be used in rotary engines using a plurality of rotors within the shroud arrangement. At least one of the rotors is not fixed to the shroud.Type: ApplicationFiled: June 16, 2011Publication date: December 22, 2011Inventors: Curtis Patterson, Kristjan Gottfried, Alejandro Juan
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Publication number: 20110311350Abstract: A turbo machine includes an impeller that rotates to make gas flow, a driving device that rotationally drives the impeller, a rotary shaft that transmits a rotational driving force of the driving device to the impeller, a bearing that rotatably supports the rotary shaft, and a casing that houses at least the driving device and the rotary shaft. In addition, the casing is provided with a grease flow path to supply grease to the bearing for lubricating the bearing.Type: ApplicationFiled: June 10, 2011Publication date: December 22, 2011Inventors: Toshio TAKAHASHI, Hirohisa WAKISAKA
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Patent number: 8075254Abstract: A rotor arrangement has a rotor-section and a circumferential moveable seal around the rotor-section. The arrangement being such that, for a given rotation rate, the rotor-section is subject to an associated radial growth and a corresponding related axial displacement, relative to the seal. The rotor-section is provided with an axially-varying profile for off-setting said radial growth of the rotor-section, adjacent the circumferential seal, at said given rotation rate.Type: GrantFiled: September 11, 2008Date of Patent: December 13, 2011Assignee: Rolls-Royce PLCInventors: Jonathan J Morgan, Nigel Twiggs, Christian H Enderby
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Publication number: 20110293404Abstract: An underwater hydroelectric turbine comprises a turbine housing having an inlet and an outlet, a central shaft extending axially inside the turbine housing, a self-contained, sealed front bearing unit for rotationally supporting a front end of the central shaft, and a self-contained, sealed rear bearing unit for rotationally supporting a rear end of the central shaft. The front bearing unit and the rear bearing unit each comprises a self-powered lubricant circulation system that draws a fraction of the mechanical power from rotation of the central shaft to circulate lubricant through each respective bearing unit. The turbine may have an equilibrium chamber for automatically balancing lubricant pressure inside a lubricant-containing chamber of the bearing chambers with ambient water pressure outside the bearing housing.Type: ApplicationFiled: November 3, 2009Publication date: December 1, 2011Applicant: GESTION RSW INC.Inventors: Imad Hamad, Guy Arnaud, Georges Dick
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Publication number: 20110293408Abstract: A turbomachine is disclosed. The turbomachine includes a rotor, a plurality of blades arranged side by side on the rotor in a circumferential direction, and a plurality of sealing apparatuses each disposed on a respective blade shaft of the plurality of blades. Each of the plurality of sealing apparatuses includes first and second bottom plates protruding in a respective axial direction on the respective blade shaft and first and second bulkheads which extend in a radial direction along the respective blade shaft and form a double-walled seal in the axial direction. A respective rounded or parabolic transitional cross-section from the bottom plates to the bulkheads is provided and at least one of the bulkheads is offset with respect to a blade root edge of the respective blade shaft in a direction toward a radial longitudinal axis of the respective blade shaft.Type: ApplicationFiled: February 2, 2010Publication date: December 1, 2011Applicant: MTU Aero Engines GmbHInventors: Manfred Feldmann, Markus Uecker, Benedikt Heidenreich, Dieter Freno
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Publication number: 20110293407Abstract: A turbine section includes a housing and a blade outer air seal to be mounted on the housing. A flex beam mounts the blade outer air seal onto the housing, with the flex beam being supported on the housing, but free to move relative to the housing. A pressure air chamber is formed on an opposed side of the flex beam from the blade outer air seal. A source of pressurized air is delivered into the chamber to cause the flex beam to move the blade outer air seal toward and away from a central axis of the housing.Type: ApplicationFiled: June 1, 2010Publication date: December 1, 2011Inventor: Joel H. Wagner
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Publication number: 20110293409Abstract: The invention relates to a method of repairing a flange of a casing for an airplane turboprop or turbojet, the flange including at least one through hole for passing a bolt for fastening equipment, the hole opening out in a face of the flange that is worn by friction against the equipment. The method consists in mounting a bearing member on the flange, the bearing member comprising a radial wall covering the worn face of the flange, said wall including a hole that comes into register with the hole in the flange and having thickness for compensating the wear of the face of the flange, said member further including an abutment for bearing against the periphery of the flange, and being fastened to the flange by adhesive.Type: ApplicationFiled: May 31, 2011Publication date: December 1, 2011Applicant: SNECMAInventors: Patrick Jean-Louis REGHEZZA, Julien Tran
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Publication number: 20110286838Abstract: A turbocharger with a variable turbine geometry device has one or two blade bearing rings. At least one or more fastening elements are provided for fastening the one or two blade bearing rings. The respective fastening element has at least one section formed with a knurl and/or at least one section formed with at least one or several notches.Type: ApplicationFiled: September 24, 2009Publication date: November 24, 2011Applicant: Continental Automotive GmbHInventors: Ralf Boening, Dirk Frankenstein, Holger Faeth
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Publication number: 20110286837Abstract: An exhaust-gas turbocharger includes an outer housing, a bearing flange connected to the outer housing by a material joint, and a turbine wheel rotatable about a rotation axis. Formfittingly connected to the bearing flange is an inner housing which is formed with a collar having at least one section in contact with an inner edge of the bearing flange in a direction of the rotation axis of the turbine wheel.Type: ApplicationFiled: May 18, 2011Publication date: November 24, 2011Applicant: Benteler Automobiltechnik GmbHInventors: CHRISTIAN SMATLOCH, Elmar Grussmann
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Publication number: 20110286836Abstract: A gas turbine engine includes a bearing and a bearing support having a second wall extending between first and second ends and operatively supported by the bearing at a first end. An engine case is secured to the second end radially outward of the first end. A second wall integral with and extending transversely from the first wall provides a flexible support. The second wall has a flange, and a gear train component is secured to the flange. A gas turbine engine includes a support structure which supports the main rotatable structure via bearings and gear train components. The support provides both the necessary structural support for the rotor structure as well as desired flexibility for a fan drive gear system.Type: ApplicationFiled: May 24, 2010Publication date: November 24, 2011Inventor: Todd A. Davis
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Publication number: 20110280714Abstract: A two-piece bearing housing is provided for use in centrifugal pumps having or requiring multiple chambers for enclosing or confining bearings or seals, and/or providing lubricant or coolant to the bearings and seals of the pump, the two-piece housing providing several improvements including the ability to make the two pieces from different materials, the reduction in scrap castings due to imprecision achieved in the casting process and improved structures in the housing for monitoring the lubricant chambers in the housing.Type: ApplicationFiled: July 22, 2011Publication date: November 17, 2011Applicant: ENVIROTECH PUMPSYSTEMS, INC.Inventors: James Northrup, Kenneth Sessum, SR.
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Publication number: 20110280713Abstract: A pump for providing high volume flows with a low hydrostatic head. The pump is particularly suited for heated fluids such as those from a solar collector and the like.Type: ApplicationFiled: May 11, 2011Publication date: November 17, 2011Applicant: PDM SOLAR INC.Inventor: David M. Baker
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Patent number: 8043051Abstract: A stackable multi-stage diffuser with anti-rotation lugs utilizes cast lugs and complementary recesses in the diffuser walls. When stacked in a housing, the lugs of lower diffusers nest inside the recesses of upper diffusers. The diffuser sections interlock and are mechanically locked in the housing to prevent rotation of the diffusers. Each diffuser is sealed directly to adjacent diffusers with o-rings, but do not contact or seal to the housing.Type: GrantFiled: May 23, 2007Date of Patent: October 25, 2011Assignee: Baker Hughes IncorporatedInventor: Christopher Marvin Brunner
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Publication number: 20110255958Abstract: A seal member for a hot gas path component in a gas turbine system is provided. The seal member includes a first seal pin, a second seal pin spaced from the first seal pin, and at least one cross-member. The at least one cross-member has a first end and a second end, and may be joined at the first end to the first seal pin and at the second end to the second seal pin. The at least one cross-member is configured to force the first and second seal pins apart when the seal member is subjected to a centrifugal force.Type: ApplicationFiled: April 16, 2010Publication date: October 20, 2011Applicant: GENERAL ELECTRIC COMPANYInventor: Thomas Raymond Farrell
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Publication number: 20110250056Abstract: 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: ApplicationFiled: April 13, 2010Publication date: October 13, 2011Inventor: John Munson
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Publication number: 20110236181Abstract: A vertical axis wind turbine comprises upper and lower rotor blades and upper and lower bearing assemblies. Horizontal members connect the upper rotor blades to the upper bearing assembly and the lower blades connect the upper rotor blades to the lower bearing assembly. The upper rotor blades can be arranged vertically or non-vertically. In non-vertical arrangements, the upper rotor blades can be twisted or swept back in a straight manner. The turbine can be self-supporting with a need for a continuous vertical axis connecting the bearing assemblies. Sweeping jet actuators are incorporated into the rotor blades to deliver oscillating air jets to surfaces of the rotor blades to delay occurrence of dynamic stall. Conduits in the blades can deliver pressurized flow of air to the actuators. The turbine can be supported by a structure that can exerts only horizontal and/or lifting forces on the rotor blade assembly to reduce the load on the lower bearing.Type: ApplicationFiled: December 7, 2009Publication date: September 29, 2011Applicant: THE ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSITY OF ARIZONAInventor: Israel J. Wygnanski
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Publication number: 20110236187Abstract: Rotary hydrodynamic blood pumps have been used to treat over a thousand patients. The Jarvik 2000 has supported a patient for seven years and uses blood immersed bearings washed by high flow to avoid excessive thrombus formation. This permits the pump to be very simple and small. Nonetheless, the present Jarvik 2000 bearings and all other mechanical blood immersed bearings of the prior art have a supporting structure that predisposes to thrombus adjacent to the bearings. The present invention provides a bearing structure that eliminates this predilection site for thrombus formation, and may provide indefinite thrombus free operation. The rotor of the preferred embodiment includes a tapered hub fabricated of wear resistant material supported by three posts at each end of the rotor, upon which the rotor rotates. Blood washes the unobstructed spaces between the posts to prevent the accumulation of a torus of thrombus that could enlarge excessively.Type: ApplicationFiled: June 10, 2011Publication date: September 29, 2011Inventor: ROBERT JARVIK
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Publication number: 20110236185Abstract: An interstage seal is provided for installation between forward and aft stage discs of a turbine section of a gas turbine engine. The seal has a forward annular portion, which extends forward to contribute to an air seal at the outer periphery of the forward stage disc, and an aft annular portion, which extends rearward to contribute to an air seal at the outer periphery of the aft stage disc. The seal has a peripheral slot into which static vane inner rails are loadable. The seal includes a first component, which provides the forward annular portion, and a second component, which provides the aft annular portion. The second component is separably connectable to the first component such that the first and second components, when connected, cooperate to form the peripheral slot. Loading the static vane inner rails into the slot prevents the second component separating from the first component.Type: ApplicationFiled: March 11, 2011Publication date: September 29, 2011Applicant: ROLLS-ROYCE PLCInventors: KATHERINE SOPHIA PIGGOTT, PAUL ANTONY DAVIS, MARK JOHN SIMMS
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Publication number: 20110236186Abstract: A wind turbine includes a rotor having at least one wind turbine blade connected to a rotor hub through at least one blade pitch bearing. The pitch bearing includes at least one outer ring, at least one centre ring and at least one inner ring. The pitch bearing has a first rolling element arrangement between the outer ring and the centre ring, and a second rolling element arrangement between the centre ring and the inner ring, wherein at least one of the first and the second rolling element arrangements includes at least two rows of rolling elements. The at least two rows are at different axial positions in relation to a rotational axis. The play in the first row of roller elements is greater than the play in the second row of roller elements. A pitch bearing for a wind turbine is also disclosed.Type: ApplicationFiled: March 25, 2011Publication date: September 29, 2011Applicant: Vestas Wind Systems A/SInventors: Anton Bech, Jesper Lykkegaard Andersen
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Publication number: 20110229311Abstract: A seal assembly comprising a first movable stator member movable between a sealing position and a non-sealing position, a second fixed stator member, the first stator member being movable relative to the second stator member, the seal assembly further comprising at least one flexure member coupled to the second stator member, and at least one biasing member coupled between the at least one flexure and the movable stator for biasing the movable stator to a non-sealing position.Type: ApplicationFiled: July 11, 2008Publication date: September 22, 2011Inventors: Kripa Varanasi, Joseph Albers, William Lee Herron, Peter Crudgington, Mahesh Khandeparker, Sai Raju Ippili, Prathap Anga, Cheryl Herron
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Publication number: 20110229312Abstract: A rolling bearing arrangement comprising two rings arranged concentrically and at least regionally one inside the other, and a gap between the rings, such that the rings are rotatable in opposite directions about an axis at the center of the rings and perpendicular to a ring plane, wherein at least one raceway is closed on itself in a circular shape in a plane and is provided with at least one row of symmetrical rolling bodies between the rings, wherein the rolling bodies of one row are guided at generally equidistant spacings by a cage having at least one disk-shaped region is placed in continuously circumferential, groove-shaped depression in the region of the raceway of one bearing ring, and wherein the cage is shaped like a comb, comprising a plurality of spacers that are joined together along a spine region, and, between every two neighboring spacers, a respective pocket for receiving a respective rolling body.Type: ApplicationFiled: August 20, 2009Publication date: September 22, 2011Inventor: Hubertus Frank