公开(公告)号：US20230122896A1

公开(公告)日：2023-04-20

申请号：US17906756

申请日：2020-03-24

Applicant: Siemens Energy, Inc.

Inventor： Ashok Reddy Gitta ,  Damien G. Teehan ,  Yan Yin ,  Chirag Patel ,  John T. Fetherolf, Jr.

IPC: F02C7/18 ,  F01D25/12

Abstract: A method of modulating a cooling supply in a gas turbine engine includes providing the engine comprising a compressor section and a turbine section and including a cooling flow circuit, the cooling flow circuit supplying a cooling air flow from a compressor cavity in the compressor section to a blade ring cavity in the turbine section, wherein the cooling flow circuit includes a main line with a full capacity valve, measuring a first pressure in the blade ring cavity, measuring a second pressure in the compressor cavity, adjusting, by a control system, the opening of the full capacity valve to control the cooling air flow through the main line in order to maintain a target pressure ratio, wherein the pressure ratio defined as a ratio of the first pressure to the second pressure. The method is performed in an ambient temperature operating range of the engine.

公开(公告)号：US11795877B2

公开(公告)日：2023-10-24

申请号：US17906756

申请日：2020-03-24

Applicant: Siemens Energy, Inc.

Inventor： Ashok Reddy Gitta ,  Damien G. Teehan ,  Yan Yin ,  Chirag Patel ,  John T. Fetherolf, Jr.

IPC: F02C7/18 ,  F02C9/18 ,  F01D25/12

CPC classification number: F02C7/18 ,  F02C9/18 ,  F01D25/12 ,  F05D2220/32 ,  F05D2230/80 ,  F05D2260/20

Abstract: A method of modulating a cooling supply in a gas turbine engine includes providing the engine comprising a compressor section and a turbine section and including a cooling flow circuit, the cooling flow circuit supplying a cooling air flow from a compressor cavity in the compressor section to a blade ring cavity in the turbine section, wherein the cooling flow circuit includes a main line with a full capacity valve, measuring a first pressure in the blade ring cavity, measuring a second pressure in the compressor cavity, adjusting, by a control system, the opening of the full capacity valve to control the cooling air flow through the main line in order to maintain a target pressure ratio, wherein the pressure ratio defined as a ratio of the first pressure to the second pressure. The method is performed in an ambient temperature operating range of the engine.