公开(公告)号：US20180283456A1

公开(公告)日：2018-10-04

申请号：US15471352

申请日：2017-03-28

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Bruce Alan Carter ,  Anand Madihalli Srinivasan ,  Satish K. Yadav ,  Ravindra Shankar Ganiger

IPC: F16C35/067 ,  F01D25/16 ,  F16C35/04 ,  F16C43/04

CPC classification number: F16C35/067 ,  F01D25/162 ,  F05D2230/60 ,  F05D2250/183 ,  F05D2250/281 ,  F05D2260/31 ,  F16C35/042 ,  F16C2360/23

Abstract: A bearing assembly for use in a rotating machine includes a housing and a retention nut threadably coupled to the housing and including a first retention mechanism. The bearing assembly also includes a retention bolt coupled to the housing and including a second retention mechanism configured to engage the first retention mechanism to maintain engagement of the retention nut with the housing.

公开(公告)号：US12270303B2

公开(公告)日：2025-04-08

申请号：US18196949

申请日：2023-05-12

Applicant: General Electric Company

Inventor： Srinivasan Swaminathan ,  Anand Madihalli Srinivasan ,  Shalini Thimmegowda ,  Ravindra Shankar Ganiger

IPC: F01D11/00 ,  F01D25/18

Abstract: This disclosure is directed to seal assemblies for a turbomachine. The seal assemblies include stationary and rotating components and at least one interface between the stationary and rotating components. The seal assembly further includes a self-lubricating lattice element made of carbon or a carbon-based material. The self-lubricating lattice element may have a porous and compressible microstructure capable of retaining a liquid substance. During engine operation, the self-lubricating lattice element can compress and expel some portion of the liquid substance to form a liquid-containing layer between the rotating and stationary components of the seal assembly. Also described herein are self-lubricating wear sleeves for use in other portions of the turbomachine.

公开(公告)号：US20230383669A1

公开(公告)日：2023-11-30

申请号：US18199249

申请日：2023-05-18

Applicant: General Electric Company

Inventor： Arundhati Sengupta ,  Ravindra Shankar Ganiger ,  Anand Madihalli Srinivasan ,  Scott Francis Wolfer

IPC: F01D11/00

CPC classification number: F01D11/003 ,  F05D2240/55 ,  F05D2300/611

Abstract: This disclosure is directed to seal assemblies for a turbomachine. The seal assemblies include stationary and rotating components and at least one interface between the stationary and rotating components. In some examples, seal assembly includes an oleophilic coating disposed between the stationary and rotating components. The seal assembly may include a surface texture to enhance the oleophilicity of the surface coating disposed between the stationary and rotating components. In other examples, the seal assembly includes an oleophobic coating disposed between the stationary and rotating components. The seal assembly may include a surface texture to enhance the oleophobicity of the surface coating. During operation, the oleophilic seal assembly features retain lubricant between the stationary and rotating components and the oleophobic seal assembly features inhibit the escape of lubricant from the contact regions between the stationary and rotating components.

公开(公告)号：US20250122973A1

公开(公告)日：2025-04-17

申请号：US18999986

申请日：2024-12-23

Applicant: General Electric Company

Inventor： Ravindra Shankar Ganiger ,  David Raju Yamarthi ,  Mandyam Rangayan Sridhar ,  Anand Madihalli Srinivasan

IPC: F16N7/40 ,  F16N29/00 ,  F16N39/02

Abstract: Example bearing lubrication system and methods of operating the same are disclosed herein. An example closed loop system to provide a lubricant to a fluid pump includes a lubrication flow network disposed within the fluid pump; a sensor fluidly coupled to the fluid pump to measure a condition of a fluid that is to enter the lubrication flow network; a first transport bus fluidly coupled to the lubrication flow network, the first transport bus to transport an inert gas; a controller to actuate a valve fluidly coupled to the first transport bus, the controller to transmit signals to the valve based on the condition of the fluid to cause the valve to open or close; and a separator fluidly coupled between an outlet of the fluid pump and the first transport bus, the separator to separate the fluid and the inert gas.

公开(公告)号：US10704734B2

公开(公告)日：2020-07-07

申请号：US15682859

申请日：2017-08-22

Applicant: General Electric Company

Inventor： Ravindra Shankar Ganiger ,  Anand Madihalli Srinivasan ,  Uma Maheshwar Domala ,  Thomas DeWitt Woodrow

IPC: F16N29/00 ,  G01N33/28 ,  F01D25/18 ,  F16N29/04 ,  F01M11/10 ,  F02C7/06

Abstract: An apparatus and method for determining lubrication contamination or deterioration in an engine or a lubricant system of an engine can include at least one sensor provided in the lubricant system. The sensor can sense an aroma of a lubricant or the air around the lubricant to measure a chemical composition or an aromatic. The sensed chemical composition or aromatic can be compared to a baseline or threshold to determine a particular contamination type or deterioration level of the lubricant.

公开(公告)号：US12173845B1

公开(公告)日：2024-12-24

申请号：US18501707

申请日：2023-11-03

Applicant: General Electric Company

Inventor： Ravindra Shankar Ganiger ,  David Raju Yamarthi ,  Mandyam Rangayan Sridhar ,  Anand Madihalli Srinivasan

IPC: F02C7/06 ,  F16N7/40 ,  F16N29/00 ,  F16N39/02

Abstract: Example bearing lubrication system and methods of operating the same are disclosed herein. An example closed loop system to provide a lubricant to a fluid pump includes a lubrication flow network disposed within the fluid pump; a sensor fluidly coupled to the fluid pump to measure a condition of a fluid that is to enter the lubrication flow network; a first transport bus fluidly coupled to the lubrication flow network, the first transport bus to transport an inert gas; a controller to actuate a valve fluidly coupled to the first transport bus, the controller to transmit signals to the valve based on the condition of the fluid to cause the valve to open or close; and a separator fluidly coupled between an outlet of the fluid pump and the first transport bus, the separator to separate the fluid and the inert gas.

公开(公告)号：US12060798B2

公开(公告)日：2024-08-13

申请号：US18199249

申请日：2023-05-18

Applicant: General Electric Company

Inventor： Arundhati Sengupta ,  Ravindra Shankar Ganiger ,  Anand Madihalli Srinivasan ,  Scott Francis Wolfer

IPC: F01D11/00 ,  F01D11/02

CPC classification number: F01D11/003 ,  F01D11/00 ,  F01D11/02 ,  F05D2240/55 ,  F05D2300/611

Abstract: This disclosure is directed to seal assemblies for a turbomachine. The seal assemblies include stationary and rotating components and at least one interface between the stationary and rotating components. In some examples, seal assembly includes an oleophilic coating disposed between the stationary and rotating components. The seal assembly may include a surface texture to enhance the oleophilicity of the surface coating disposed between the stationary and rotating components. In other examples, the seal assembly includes an oleophobic coating disposed between the stationary and rotating components. The seal assembly may include a surface texture to enhance the oleophobicity of the surface coating. During operation, the oleophilic seal assembly features retain lubricant between the stationary and rotating components and the oleophobic seal assembly features inhibit the escape of lubricant from the contact regions between the stationary and rotating components.

公开(公告)号：US20230383666A1

公开(公告)日：2023-11-30

申请号：US18196949

申请日：2023-05-12

Applicant: General Electric Company

Inventor： Srinivasan Swaminathan ,  Anand Madihalli Srinivasan ,  Shalini Thimmegowda ,  Ravindra Shankar Ganiger

IPC: F01D11/00 ,  F01D25/18

CPC classification number: F01D11/001 ,  F01D25/183 ,  F05D2300/224 ,  F05D2260/98 ,  F05D2240/55

Abstract: This disclosure is directed to seal assemblies for a turbomachine. The seal assemblies include stationary and rotating components and at least one interface between the stationary and rotating components. The seal assembly further includes a self-lubricating lattice element made of carbon or a carbon-based material. The self-lubricating lattice element may have a porous and compressible microstructure capable of retaining a liquid substance. During engine operation, the self-lubricating lattice element can compress and expel some portion of the liquid substance to form a liquid-containing layer between the rotating and stationary components of the seal assembly. Also described herein are self-lubricating wear sleeves for use in other portions of the turbomachine.

公开(公告)号：US10274016B2

公开(公告)日：2019-04-30

申请号：US15471352

申请日：2017-03-28

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Bruce Alan Carter ,  Anand Madihalli Srinivasan ,  Satish K. Yadav ,  Ravindra Shankar Ganiger

IPC: F16C35/04 ,  F16C35/067 ,  F01D25/16

Abstract: A bearing assembly for use in a rotating machine includes a housing and a retention nut threadably coupled to the housing and including a first retention mechanism. The bearing assembly also includes a retention bolt coupled to the housing and including a second retention mechanism configured to engage the first retention mechanism to maintain engagement of the retention nut with the housing.

公开(公告)号：US20190063678A1

公开(公告)日：2019-02-28

申请号：US15682859

申请日：2017-08-22

Applicant: General Electric Company

Inventor： Ravindra Shankar Ganiger ,  Anand Madihalli Srinivasan ,  Uma Maheshwar Domala ,  Thomas DeWitt Woodrow

IPC: F16N29/00 ,  F01D25/18

Abstract: An apparatus and method for determining lubrication contamination or deterioration in an engine or a lubricant system of an engine can include at least one sensor provided in the lubricant system. The sensor can sense an aroma of a lubricant or the air around the lubricant to measure a chemical composition or an aromatic. The sensed chemical composition or aromatic can be compared to a baseline or threshold to determine a particular contamination type or deterioration level of the lubricant.