公开(公告)号：US10900369B2

公开(公告)日：2021-01-26

申请号：US16129218

申请日：2018-09-12

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Nathan Evan McCurdy Gibson ,  Christopher Jon Potokar ,  Hariharan Manickavasagam Sarojini ,  Arnab Sen ,  Bikramjit Chatterjee

IPC: F01D11/02

Abstract: An aspirating face seal between high and low pressure regions of a turbomachine at a juncture between rotatable and non-rotatable members of turbomachine includes gas bearing rotatable and non-rotatable face surfaces. Primary and starter seal teeth and optional deflector seal tooth are mounted on seal teeth carrier on rotatable member. Non-rotatable face surface is mounted on an annular slider on the non-rotatable member. A pull-off biasing means urges the annular slider away from the rotatable member and the non-rotatable face surface away from the rotatable surface. A secondary seal is in sealing engagement with the annular slider in the low pressure region and the pull-off biasing means is located radially outwardly of the annular slider in the high pressure region. Biasing means may include coil springs within spring chambers of circumferentially spaced cartridges. Tongues extend inwardly from spring chambers into grooves in slider.

公开(公告)号：US10890082B2

公开(公告)日：2021-01-12

申请号：US16098561

申请日：2017-04-28

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Narendra Anand Hardikar ,  Nathan Evan McCurdy Gibson

IPC: F16J15/34 ,  F01D11/02 ,  F02C7/28 ,  F01D11/00 ,  F16J15/447 ,  F16J15/16

Abstract: An aspirating face seal between high and low pressure regions of a turbomachine at a juncture between rotatable and non-rotatable members of turbomachine includes gas bearing rotatable and non-rotatable face surfaces. A starter seal tooth and optional deflector seal tooth are mounted on a seal teeth carrier on the rotatable member. The primary seal tooth and non-rotatable face surface are mounted on an annular slider on the non-rotatable member. A pull-off biasing means urges the annular slider away from the rotatable member and the non-rotatable face surface away from the rotatable surface. A secondary seal is in sealing engagement with the annular slider in the low-pressure region and the pull-off biasing means is located radially outwardly of the annular slider in the high pressure region.

公开(公告)号：US10781709B2

公开(公告)日：2020-09-22

申请号：US15865359

申请日：2018-01-09

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Arnab Sen ,  Jeffrey Douglas Rambo ,  Rajesh Kumar ,  Nathan Evan McCurdy Gibson ,  Robert Proctor ,  Bhaskar Nanda Mondal ,  Steven Douglas Johnson

IPC: F01D11/00 ,  F01D25/12

Abstract: A turbine engine includes an engine core defining a higher pressure region and a lower pressure region. A seal can fluidly separate the higher pressure region from the lower pressure region and be movably mounted to a component within the turbine engine, where a side of the seal can confront the component.

公开(公告)号：US20200166142A1

公开(公告)日：2020-05-28

申请号：US16201564

申请日：2018-11-27

Applicant: General Electric Company

Inventor： Rahul Anil Bidkar ,  Christopher Edward Wolfe ,  Nathan Evan McCurdy Gibson ,  Rodrigo Rodriguez Erdmenger ,  Deepak Trivedi ,  Quang Tue Nguyen Tran

IPC: F16J15/44 ,  F01D5/20 ,  F01D5/22 ,  F16J15/40

Abstract: A seal assembly for a rotary machine is positioned between a rotating component and a stationary component of the rotary machine. The seal assembly includes a seal bearing face that opposes the rotating component and a slide device. The slide device is positioned between different fluid pressure volumes in the rotary machine. The slide device axially moves toward the rotating component responsive to pressurization of the rotary machine. The slide device includes cross-over ports and the seal bearing face includes feed ports. The feed ports extend through the seal bearing face to form an aerostatic portion of a film bearing between the seal bearing face and the rotating component. The seal bearing face and/or the rotating component is a non-planar surface that, during rotating motion of the rotating component, forms an aerodynamic portion of the film bearing between the seal bearing face and the rotating component.

公开(公告)号：US20200157964A1

公开(公告)日：2020-05-21

申请号：US16194653

申请日：2018-11-19

Applicant: General Electric Company

Inventor： Rodrigo Rodriguez Erdmenger ,  Nathan Evan McCurdy Gibson ,  Quang Tue Nguyen Tran ,  Antonio Guijarro Valencia

IPC: F01D11/16

Abstract: An aspect of the present disclosure is directed to a seal assembly. The seal assembly includes a fluid bearing wall including a bearing face defining a fluid opening through the fluid bearing wall. The seal assembly further includes a tilt member is extended from and attached to the fluid bearing wall. The tilt member defines a fluid passage therethrough in fluid communication with the fluid opening at the bearing face of the fluid bearing wall. The seal assembly still further includes a seal body surrounding the tilt member. A cavity is defined between the tilt member and the seal body. The seal assembly further includes a spring member coupled to the seal body and the fluid bearing wall. A passage is defined between the fluid bearing wall and the seal body.

公开(公告)号：US20200157961A1

公开(公告)日：2020-05-21

申请号：US16194673

申请日：2018-11-19

Applicant: General Electric Company

Inventor： Rodrigo Rodriguez Erdmenger ,  Nathan Evan McCurdy Gibson ,  Quang Tue Nguyen Tran ,  Antonio Guijarro Valencia

IPC: F01D11/02 ,  F01D11/06 ,  F01D11/00

Abstract: An aspect of the present disclosure is directed to a seal assembly for a turbo machine. The seal assembly includes a fluid bearing wall including a bearing face in which the bearing face defines a fluid opening through the fluid bearing wall. The seal assembly further includes a seal body extended circumferentially relative to a centerline axis. The seal body defines a cavity extended at least partially circumferentially through the seal body. A fluid passage is defined through the seal body in fluid communication with the fluid opening through the fluid bearing wall.

公开(公告)号：US20200040940A1

公开(公告)日：2020-02-06

申请号：US16055333

申请日：2018-08-06

Applicant: General Electric Company

Inventor： Sean Christopher Binion ,  Steven Douglas Johnson ,  David Vickery Parker ,  Stephen Joseph Waymeyer ,  Nathan Evan McCurdy Gibson

IPC: F16C32/06 ,  F01D25/16 ,  F01D25/22 ,  F02C7/06 ,  F16C17/12

Abstract: A bearing assembly including a body defining an outer surface, an inner surface, and an aft surface is generally provided. A first inlet opening is defined through the outer surface in fluid communication with a first internal passage defined by a first internal wall. The first internal passage is in fluid communication with a first outlet opening defined through the inner surface. A second inlet opening is defined through the inner surface in fluid communication with a second internal passage defined by a second internal wall. The second internal passage is in fluid communication with a second outlet opening defined through the aft surface.

公开(公告)号：US10359117B2

公开(公告)日：2019-07-23

申请号：US15450130

申请日：2017-03-06

Applicant: General Electric Company

Inventor： Brian Joseph Prenger ,  Richard Alan Wesling ,  Nathan Evan McCurdy Gibson ,  Ravindra Shankar Ganiger ,  Narendra Anand Hardikar ,  Anand Aravindrao Kulkarni

IPC: F16J15/447 ,  F16J15/02 ,  F01D11/02 ,  F04D29/16 ,  F04D29/52 ,  F01D11/00

Abstract: Aspirating face seal between high and low pressure regions of turbomachine between rotatable and non-rotatable members of turbomachine includes gas bearing rotatable and non-rotatable face surfaces, non-rotatable face surface mounted on annular slider on non-rotatable member. Retracting means retracts annular slider away from rotatable member and non-rotatable face surface away from rotatable surface and includes circumferentially spaced apart non-coiled springs axially disposed between slider and non-rotatable engine member. Leaf springs may include first and second ends mounted or attached to first and second mounting lugs or tabs attached to non-rotatable member and slider respectively and middle portion between ends. Springs oriented for retracting slider if slider contacts rotatable member. Primary and starter seal teeth may be mounted on carrier on rotatable member. Primary seal tooth may be on non-rotatable member and starter seal tooth on rotatable member.

公开(公告)号：US10161259B2

公开(公告)日：2018-12-25

申请号：US14878862

申请日：2015-10-08

Applicant: General Electric Company

Inventor： Nathan Evan McCurdy Gibson ,  Rahul Anil Bidkar ,  Azam Mihir Thatte ,  Narayana Shastry ,  Hariharan Manickavasagam Sarojini

IPC: F01D11/00 ,  F16J15/44 ,  F01D11/02 ,  F01D11/16 ,  F01D11/14 ,  F01D11/08 ,  F01D11/04 ,  F01D11/10 ,  F01D11/12

Abstract: A seal apparatus for a rotary machine, including a plurality of sealing assembly segments surrounding a rotor element which is mounted for rotation about a longitudinal axis and has an outer surface. Each of the segments includes a shoe with one or more labyrinth teeth facing the outer surface and a shoe plate disposed downstream of the one or more labyrinth seal teeth and configured to generate an aerodynamic force between the shoe plate and the outer surface of the rotor element. The shoe is further configured to be flexible in a radial-axial plane in response to fluid film forces generated by interaction of the sealing assembly segment and the rotor element, and an axially-oriented beam spring connects the shoe to a stationary seal body.

公开(公告)号：US20180030986A1

公开(公告)日：2018-02-01

申请号：US15221962

申请日：2016-07-28

Applicant: General Electric Company

Inventor： Arnab Sen ,  Mohamed Musthafa Thoppil ,  Nathan Evan McCurdy Gibson

IPC: F04D27/00 ,  F01D9/02 ,  F01D25/10 ,  F04D29/32 ,  F04D29/54 ,  F04D29/056 ,  F01D5/02 ,  F01D11/00

Abstract: A turbine engine with a stator having axially spaced first and second structural elements along with a rotor and a face seal between the rotor and the stator including a non-rotating gas bearing face coupled to the first and second structural elements, and a rotating gas bearing face coupled to the rotor and confronting the non-rotating gas bearing surface. Introducing airflow to one or multiple parts of the seal.