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：US20210148243A1

公开(公告)日：2021-05-20

申请号：US17143115

申请日：2021-01-06

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：US11624290B2

公开(公告)日：2023-04-11

申请号：US17143115

申请日：2021-01-06

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：US20170363212A1

公开(公告)日：2017-12-21

申请号：US15183309

申请日：2016-06-15

Applicant: General Electric Company

Inventor： Mohamed Musthafa Thoppil ,  Bikramjit Chatterjee ,  Sunil Srinvasa Murthy

IPC: F16J15/447

CPC classification number: F16J15/444

Abstract: A sealing element apparatus for a rotating seal includes an array of cells defining an annular sealing surface, where the cells are divided into a plurality of layers extending parallel to the sealing surface.