公开(公告)号：US20210131298A1

公开(公告)日：2021-05-06

申请号：US16673293

申请日：2019-11-04

Applicant: General Electric Company

Inventor： Ravindra Shankar Ganiger ,  Anusrita Raychaudhuri ,  Apostolos Karafillis

IPC: F01D11/00

Abstract: A sealing apparatus for a gas turbine engine includes: a first component; a second component positioned in proximity to the first component such that cavity is defined between the first and second components; a resilient seal disposed in the cavity so as to block gas flow between the first and second components, the resilient seal having a first contact surface contacting the first component and a second contact surface contacting the second component; and wherein the resilient seal is configured so as to produce a rolling movement in response to relative movement of the first and second components.

公开(公告)号：US10823228B2

公开(公告)日：2020-11-03

申请号：US16394180

申请日：2019-04-25

Applicant: General Electric Company

Inventor： Ravindra Shankar Ganiger ,  Shuvajyoti Ghosh ,  Shivaram Ac ,  Akash Joshi ,  Vidya Lokammanahalli Shivashankar

IPC: F16C19/06 ,  F16C25/08 ,  F04D29/056 ,  F02K3/06 ,  F04D29/32 ,  F04D29/053 ,  F16C35/073 ,  F16C39/02 ,  F16C19/22 ,  F01D25/16 ,  F04D29/66 ,  F01D21/04 ,  F02C7/06

Abstract: A hybrid bearing support system includes a shaft extension fixedly coupled to a rotatable member at a radial inner end of the shaft extension, a radial outer end of the shaft extension fixedly coupled to a rotatable race of a bearing supporting the rotatable member, and a recoupler device formed of a shape memory alloy (SMA) material coupled in parallel with at least a portion of the shaft extension between the radial inner end and the radial outer end.

公开(公告)号：US10724400B2

公开(公告)日：2020-07-28

申请号：US15949427

申请日：2018-04-10

Applicant: General Electric Company

Inventor： Shivaram Ac ,  Vidyashankar Ramasastry Buravalla ,  Ravindra Shankar Ganiger ,  Shuvajyoti Ghosh ,  Akash Joshi

IPC: F01D25/16 ,  F02C7/20 ,  F16F15/02 ,  F16C19/54 ,  F16F15/023 ,  F02C7/06 ,  F16C19/26 ,  F16C27/04 ,  F16C27/06 ,  F16F1/22

Abstract: A support assembly for a load-bearing unit, a gas turbine engine including the support assembly, and a method of operation of the support assembly are provided. The support assembly includes a support element, a damper, and a variable stiffness member. The support element supports the load-bearing unit. The damper supports the support element and is configured to provide dampening of the load-bearing unit. The variable stiffness member is positioned between the damper and the load-bearing unit. The variable stiffness member is configured to provide a serial dampening of the load-bearing unit with the damper. The variable stiffness member includes a shape memory alloy.

公开(公告)号：US20190360357A1

公开(公告)日：2019-11-28

申请号：US15989869

申请日：2018-05-25

Applicant: General Electric Company

Inventor： Eduardo Aguilar ,  Ravindra Shankar Ganiger ,  Richard R. Schmidt

IPC: F01D25/16 ,  F01D25/04 ,  F01D21/14 ,  F16C25/06

Abstract: A system for operating a turbo machine to maintain bearing engagement, the system including a bearing assembly; a first displacement device adjacent a bearing race; a second displacement device disposed adjacent the bearing race opposite of the first displacement device; an effort supply system disposed adjacent to the first and/or second displacement devices; and one or more controllers configured to perform operations. The operations include generating a first effort input at the first and/or second displacement devices; adjusting a thrust loading at the bearing assembly; generating a second effort input at the first displacement device greater than the first effort input; and displacing the bearing race opposite of the thrust loading at the bearing assembly via the generated second effort input at the first displacement device.

公开(公告)号：US20190162077A1

公开(公告)日：2019-05-30

申请号：US15823631

申请日：2017-11-28

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Shuvajyoti Ghosh ,  Ravindra Shankar Ganiger ,  Praveen Sharma ,  Ishita Sehgal ,  Prashant Bhujabal ,  Shivam Mittal

IPC: F01D25/16

Abstract: A support system for a gas turbine engine is provided. The support system includes a load-bearing unit that includes a first flange, a support element supporting the load-bearing unit and having a second flange, a fastener connecting the first flange and the second flange, a first super-elastic shape memory alloy component in contact with the first flange, and a second super-elastic shape memory alloy component in contact with the second flange. The first and the second super-elastic shape memory alloy components are configured to deform when a load exerted by the fastener exceeds a threshold load value of the fastener.

公开(公告)号：US20190128329A1

公开(公告)日：2019-05-02

申请号：US16226211

申请日：2018-12-19

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Shuvajyoti Ghosh ,  Akash Joshi ,  Shivaram AC ,  Ravindra Shankar Ganiger ,  Praveen Sharma

IPC: F16C39/02 ,  F01D21/08 ,  F01D25/16 ,  F16C29/12 ,  F16C35/077 ,  F16C35/067

Abstract: A load reduction assembly includes an annular bearing cone configured to extend between a bearing assembly and a frame assembly and form a first load path therebetween. The load reduction assembly further includes an annular recoupler member configured to extend between the bearing assembly and the frame assembly and form a second load path therebetween. The second load path is parallel to the first load path. The recoupler member includes a shape memory alloy configured to change stiffness in response to a change in a stress condition, thereby regulating an imbalance condition of a rotor shaft coupled to the bearing assembly.

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：US20180252317A1

公开(公告)日：2018-09-06

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 ,  F04D29/08

CPC classification number: F16J15/447 ,  F01D11/001 ,  F01D11/003 ,  F01D11/02 ,  F01D11/025 ,  F04D29/164 ,  F04D29/526 ,  F05D2260/38 ,  F05D2260/52

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：US10041534B2

公开(公告)日：2018-08-07

申请号：US15017791

申请日：2016-02-08

Applicant: General Electric Company

Inventor： Ravindra Shankar Ganiger ,  Bruce Alan Carter ,  Charles Andrew Corman

IPC: F01D25/16 ,  F16C27/04 ,  F16C19/16 ,  F16C35/067 ,  F16C35/04 ,  F16C33/58 ,  F01D5/02 ,  F01D25/24 ,  F04D29/32

Abstract: A retention housing for the outer race of a bearing of a gas turbine engine includes a spring finger housing connected to and overlying a bearing housing that is connected to the outer race of the bearing. The spring finger housing includes an arrangement of spring fingers that yields a lightweight housing capable of withstanding very high radial loads combined with very high torsional windup and axial thrust load. Dowel pins extending radially from the bearing housing and through the engine's interface shell limit the deflection and self-arrest the distortion of the housing. A gas turbine engine includes the retention housing described above.

公开(公告)号：US20180112554A1

公开(公告)日：2018-04-26

申请号：US15331158

申请日：2016-10-21

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Shuvajyoti Ghosh ,  Akash Joshi ,  Shivaram AC ,  Ravindra Shankar Ganiger ,  Praveen Sharma

IPC: F01D25/16 ,  F01D5/02 ,  F16C35/077 ,  F16C39/02

CPC classification number: F16C39/02 ,  F01D21/08 ,  F01D25/164 ,  F05D2260/15 ,  F05D2300/505 ,  F16C29/123 ,  F16C35/067 ,  F16C35/077 ,  F16C2202/06 ,  F16C2202/28 ,  F16C2360/23 ,  Y02T50/671

Abstract: A load reduction assembly includes an annular bearing cone configured to extend between a bearing assembly and a frame assembly and form a first load path therebetween. The load reduction assembly further includes an annular recoupler member configured to extend between the bearing assembly and the frame assembly and form a second load path therebetween. The second load path is parallel to the first load path. The recoupler member includes a shape memory alloy configured to change stiffness in response to a change in a stress condition, thereby regulating an imbalance condition of a rotor shaft coupled to the bearing assembly.