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公开(公告)号：US11359669B2
公开(公告)日：2022-06-14
申请号：US16833791
申请日：2020-03-30
Applicant: Stein Seal Company
Inventor： Glenn M. Garrison
Abstract: A circumferential seal assembly capable of separating a gas into two separate flow paths before communication between a rotatable runner and a pair of seal rings is presented. The seal assembly includes an annular seal housing, a pair of annular seal rings, a rotatable runner, and a plurality of groove structures. The seal housing is interposed between a pair of compartments. The seal rings are separately disposed within the seal housing and separately disposed around the rotatable runner. The groove structures are disposed along an outer annular surface of the rotatable runner. A gas is communicable onto the groove structures. Each groove structure includes at least two hydrodynamic grooves that separate and communicate the gas onto the seal rings. Each groove includes steps whereby the depth of at least one adjoining step decreases in the direction opposite to rotation with or without the depth of another adjoining steps increasing in the direction opposite to rotation.
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公开(公告)号：US10890112B2
公开(公告)日：2021-01-12
申请号：US16372696
申请日：2019-04-02
Applicant: Airbus Helicopters
Inventor： Michel Vialle , Alban Corpron , Frederic Dyrla
Abstract: The present invention relates to a method of increasing the safety of a power plant provided with at least one heat engine and a gearbox (BTP), the engine driving the gearbox (BTP), the gearbox (BTP) having a lubrication system implemented using an aqueous medium stored in a reserve, in which method a fluid comprising water is injected into the heat engine to increase the power developed by the heat engine without increasing the temperature of a member of the heat engine or to decrease the temperature without modifying the power developed by the engine, the fluid being taken from the reserve.
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公开(公告)号：US10731761B2
公开(公告)日：2020-08-04
申请号：US15650457
申请日：2017-07-14
Applicant: United Technologies Corporation
Inventor： Conway Chuong , Tara L. D'Ambruoso , Joey Wong
Abstract: A non-contact seal assembly includes a plurality of seal shoes arranged about a centerline in an annular array, the seal shoes including a first seal shoe extending axially along the centerline between a first shoe end and a second shoe end. The non-contact seal assembly may comprise a seal base circumscribing axially offset from the annular array of the seal shoes. The non-contact seal assembly may further comprise a plurality of spring elements, each of the spring elements radially distal from and connecting to a respective one of the seal shoes, and each of the plurality of spring elements is axially adjacent to the seal base.
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公开(公告)号：US10711839B2
公开(公告)日：2020-07-14
申请号：US16030927
申请日：2018-07-10
Applicant: Stein Seal Company
Inventor： Glenn M. Garrison
Abstract: A circumferential seal assembly capable of dividing a gas into separate flow paths before communication between a rotatable runner and a pair of seal rings is presented. The assembly includes an annular seal housing, a rotatable runner, a pair of annular seal rings, and a plurality of groove structures. Each groove structure separates a source flow communicated into a feed groove so that a portion enters at least two grooves to form a longitudinal flow therein. Each groove includes at least two adjoining steps defined by base walls. The base walls are arranged along the groove to decrease depthwise opposite to rotation of the rotatable runner. Two adjoining base walls are disposed about a base shoulder. Each base shoulder locally redirects the longitudinal flow to form an outward radial flow in the direction of one annular seal ring. The base walls are bounded by and intersect a pair of side walls. Each side wall includes at least one side shoulder which narrows the groove widthwise and locally redirects the longitudinal flow away from the side wall to form a lateral flow in the direction of the other side wall. Each reduction to the volume of the gas at the downstream end of each groove structure increases pressure and enhances the stiffness of a thin-film layer between each annular seal ring and the rotatable runner.
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5.发明授权公开(公告)号：US10669893B2
公开(公告)日：2020-06-02
申请号：US15605351
申请日：2017-05-25
Applicant: General Electric Company
Inventor： Alan Roy Stuart , Jeffrey Donald Clements , Richard Schmidt , Thomas Ory Moniz
Abstract: The present disclosure is directed to a gas turbine engine defining a longitudinal direction, an axial centerline extended along the longitudinal direction, an upstream end and a downstream end opposite of the upstream end along the longitudinal direction, a radial direction, and a circumferential direction. The gas turbine engine includes a high speed turbine rotor coupled to a high pressure (HP) shaft and HP compressor, a low speed turbine rotor comprising an axially extended hub, and a first turbine bearing disposed radially between the low speed turbine rotor and the high speed turbine rotor. The high speed turbine rotor defines a turbine cooling conduit through the high speed turbine rotor. The low speed turbine rotor includes a rotating nozzle adjacent to the turbine cooling conduit. The first turbine bearing defines an outer air bearing and an inner air bearing. The first turbine bearing defines a stationary nozzle adjacent to the rotating nozzle of the first turbine rotor.
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Patent Agency Ranking
公开(公告)号：US10577975B2
公开(公告)日：2020-03-03
申请号：US15131370
申请日：2016-04-18
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Bugra Han Ertas , Jason Joseph Bellardi , Joshua Tyler Mook
Abstract: Embodiments of a stage for a turbomachine have been provided herein. In some embodiments, a stage for a turbomachine may include a bearing having a housing, the bearing defining an interior cavity; an outer ring disposed radially outward from the housing; and a plurality of airfoils disposed between the housing of the bearing and the outer ring.
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公开(公告)号：US10316974B2
公开(公告)日：2019-06-11
申请号：US15681829
申请日：2017-08-21
Applicant: ROLLS-ROYCE plc
Inventor： Helen Webster , Luke Hamilton , Murad Khader , Robert Grasse
Abstract: Air-riding seal arrangement between two components are rotatable relative to each other about a rotation axis. The seal arrangement includes an axially slidable carrier module mounted to one component and runner provided by other components. The carrier module and runner have respective and opposing annular sealing faces in a seal arrangement normal operation are axially spaced to form an air-seal therebetween separating a high-pressure region at one side of the air-seal from low-pressure region at the other side. The carrier module has a front and rear portions, and carrier module sealing face is provided by the front portion. The front portion has first and second rotation positions relative to the rear portion, the first rotation position being in normal operation, and second rotation position being in event of high speed touchdown of the annular sealing faces when contact between sealing faces rotates the front portion to the second rotation position.
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公开(公告)号：US10119474B2
公开(公告)日：2018-11-06
申请号：US14766192
申请日：2013-12-18
Applicant: United Technologies Corporation
Inventor： Dave J. Hyland , Joseph T. Caprario , Timothy Dale
Abstract: A hydrostatic seal and vibration damping apparatus for a gas turbine engine adapted to reduce vibrations during cold engine start-ups is disclosed. In one disclosed configuration, the vibration damping apparatus is comprised of a temperature sensitive control ring having a relatively high coefficient of thermal expansion adapted to expand quickly at relatively low temperatures to protect the hydrostatic seal during such gas turbine engine startups. At operational temperatures, the control ring is adapted to become separated from the hydrostatic sea.
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公开(公告)号：US20180180096A1
公开(公告)日：2018-06-28
申请号：US15899813
申请日：2018-02-20
Applicant: Stein Seal Company
Inventor： Glenn M. Garrison
CPC classification number: F16C32/0662 , F01D11/04 , F01D25/22 , F05D2250/75 , F16C32/0607 , F16C32/0625 , F16C2360/23 , F16J15/40 , F16J15/441 , F16J15/442
Abstract: A circumferential seal assembly capable of separating a gas into two separate flow paths before communication between a rotatable runner and a pair of seal rings is presented. The seal assembly includes an annular seal housing, a pair of annular seal rings, a rotatable runner, and a plurality of groove structures. The seal housing is interposed between a pair of compartments. The seal rings are separately disposed within the seal housing and separately disposed around the rotatable runner. The groove structures are disposed along an outer annular surface of the rotatable runner. A gas is communicable onto the groove structures. Each groove structure includes at least two hydrodynamic grooves that separate and communicate the gas onto the seal rings. Each groove includes steps whereby the depth of at least one adjoining step decreases in the direction opposite to rotation with or without the depth of another adjoining steps increasing in the direction opposite to rotation. Each groove is also tapered widthwise.
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10.发明授权公开(公告)号：US10001030B2
公开(公告)日：2018-06-19
申请号：US14504198
申请日：2014-10-01
Applicant: Energy Recovery, Inc.
Inventor： Prem Krish , Jeremy Grant Martin
IPC: B01D53/14 , F01D25/22 , F02C7/06 , F02C6/12 , C10M173/00 , B01D53/78 , F04D29/06 , F04D13/04 , B01D53/00
CPC classification number: F01D25/22 , B01D53/002 , B01D53/14 , B01D53/1418 , B01D53/1425 , B01D53/1456 , B01D53/1462 , B01D53/1493 , B01D53/78 , B01D2252/204 , B01D2257/304 , B01D2257/504 , B01D2257/80 , C10M173/00 , F02C6/12 , F02C7/06 , F04D13/04 , F04D29/061 , F05D2210/12 , F05D2220/40 , F05D2260/98
Abstract: A method includes treating a process fluid of a gas processing system to create a treated process fluid and pressurizing the treated process fluid to a predetermined pressure using a pump of the gas processing system. The method also includes routing the treated process fluid at the predetermined pressure to a rotating assembly of the gas processing system and lubricating a bearing of the rotating assembly using the treated process fluid at the predetermined pressure.
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