Fuel supply system for use in a gas turbine engine and method of controlling an overspeed event therein
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02C-009/28
F02C-007/232
F23R-003/28
F01D-021/02
F02C-009/46
F02C-007/22
출원번호
US-0945006
(2015-11-18)
등록번호
US-10100747
(2018-10-16)
발명자
/ 주소
Negroni, Alberto Jose
Snider, David August
Seely, William Forrester
O'Donnell, Keegan Saunders
Conger, Kyle Joseph
Roman, Carlos Gabriel
출원인 / 주소
General Electric Company
대리인 / 주소
Armstrong Teasdale LLP
인용정보
피인용 횟수 :
0인용 특허 :
11
초록▼
A fuel supply system for use in a gas turbine engine is provided. The fuel supply system includes a fuel manifold, and a shutoff valve coupled in flow communication with the fuel manifold and positioned upstream from said fuel manifold. The shutoff valve is configured to actuate into a closed positi
A fuel supply system for use in a gas turbine engine is provided. The fuel supply system includes a fuel manifold, and a shutoff valve coupled in flow communication with the fuel manifold and positioned upstream from said fuel manifold. The shutoff valve is configured to actuate into a closed position when the gas turbine engine is operating at an overspeed condition. The system also includes a relief valve coupled in flow communication with the fuel manifold, wherein the relief valve is configured to release fuel from within the fuel manifold when the shutoff valve is in the closed position, and when a pressure within the fuel manifold is greater than a first predetermined threshold.
대표청구항▼
1. A fuel supply system for controlling an overspeed condition of a gas turbine engine, said fuel supply system comprising: a fuel manifold;a shutoff valve coupled in flow communication with said fuel manifold and positioned upstream from said fuel manifold, wherein said shutoff valve is configured
1. A fuel supply system for controlling an overspeed condition of a gas turbine engine, said fuel supply system comprising: a fuel manifold;a shutoff valve coupled in flow communication with said fuel manifold and positioned upstream from said fuel manifold, wherein said shutoff valve is configured to actuate from an open shutoff valve position into a closed shutoff valve position in response to the gas turbine engine operating at the overspeed condition, wherein the closed shutoff valve position precludes fuel from being supplied to said fuel manifold;a relief valve;a primary discharge line coupled in flow communication between said fuel manifold and said relief valve;a sensing line coupled between said fuel manifold and said relief valve in parallel to said primary discharge line, said sensing line configured to supply a first portion of the fuel from said fuel manifold to said relief valve in response to the overspeed condition; andat least one sensing valve for determining pressure coupled along said sensing line, wherein said at least one sensing valve is configured to actuate into an open sensing valve position in response to the overspeed condition such that the first portion of the fuel is channeled through said sensing line towards said relief valve, wherein said relief valve is configured to actuate from a closed relief valve position into an open relief valve position in response to being subjected to a pressure in said sensing line greater than a first predetermined threshold, and wherein said relief valve is configured to release a second portion of the fuel from within said fuel manifold via said primary discharge line when said relief valve is in the open relief valve position. 2. The fuel supply system in accordance with claim 1, wherein said relief valve comprises a first inlet coupled in flow communication with said primary discharge line, and a second inlet coupled in flow communication with said sensing line. 3. The fuel supply system in accordance with claim 2, wherein said relief valve is configured to actuate into the open relief valve position in response to being subjected to the pressure greater than the first predetermined threshold at said second inlet. 4. The fuel supply system in accordance with claim 1, further comprising a testing valve coupled along said sensing line between said at least one sensing valve and said relief valve. 5. The fuel supply system in accordance with claim 1, wherein said relief valve is configured to release the first portion of the fuel and the second portion of the fuel from within said fuel manifold to atmosphere. 6. The fuel supply system in accordance with claim 1, wherein said primary discharge line has a larger flow capacity than said sensing line. 7. A gas turbine engine comprising: a combustor;a fuel manifold configured to supply fuel to said combustor;a shutoff valve coupled in flow communication with said fuel manifold and positioned upstream from said fuel manifold, wherein said shutoff valve is configured to actuate from an open shutoff valve position into a closed shutoff valve position in response to the gas turbine engine operating at an overspeed condition, wherein the closed shutoff valve position precludes the fuel from being supplied to said fuel manifold;a relief valve;a primary discharge line coupled in flow communication between said fuel manifold and said relief valve;a sensing line coupled between said fuel manifold and said relief valve in parallel to said primary discharge line, said sensing line configured to supply a first portion of the fuel from said fuel manifold to said relief valve in response to the shutoff valve being in the closed shutoff valve position; andat least one sensing valve for determining pressure coupled along said sensing line, wherein said at least one sensing valve is configured to actuate into an open sensing valve position in response to the shutoff valve being in the closed shutoff valve position such that the first portion of the fuel is channeled through said sensing line towards said relief valve, wherein said relief valve is configured to actuate from a closed relief valve position into an open relief valve position in response to being subjected to a pressure in said sensing line greater than a first predetermined threshold, and wherein said relief valve is configured to release a second portion of the fuel from within said fuel manifold via said primary discharge line when said relief valve is in the open relief valve position. 8. The gas turbine engine in accordance with claim 7, wherein said relief valve comprises a first inlet coupled in flow communication with said primary discharge line, and a second inlet coupled in flow communication with said sensing line. 9. The gas turbine engine in accordance with claim 8, wherein said relief valve is configured to actuate into the open relief valve position in response to being subjected to the pressure greater than the first predetermined threshold at said second inlet. 10. The gas turbine engine in accordance with claim 7, wherein said at least one sensing valve comprises a first sensing valve and a second sensing valve coupled in parallel along said sensing line. 11. The gas turbine engine in accordance with claim 7 further comprising a testing valve coupled along said sensing line between said at least one sensing valve and said relief valve, wherein said testing valve is configured such that during normal non-testing operation said testing valve is in an open testing valve position and during testing operation said testing valve is in a closed testing valve position such that an operating capability of components positioned between said fuel manifold and said testing valve can be verified. 12. The gas turbine engine in accordance with claim 7, wherein said relief valve is configured to release the first portion of the fuel and the second portion of the fuel from within said fuel manifold to atmosphere. 13. The gas turbine engine in accordance with claim 7, wherein said primary discharge line has a larger flow capacity than said sensing line. 14. A method of controlling an overspeed condition in a gas turbine engine, said method comprising: supplying a flow of fuel from a fuel supply to a fuel manifold;determining an operating condition of the gas turbine engine;stopping the flow of fuel to the fuel manifold in response to determining that the operating condition is the overspeed condition, wherein the flow of fuel is stopped by actuating a shutoff valve positioned between the fuel supply and the fuel manifold from an open shutoff valve position into a closed shutoff valve position; andsupplying a first portion of the fuel from the fuel manifold to a relief valve via a sensing line in response to the overspeed condition, wherein at least one sensing valve for determining pressure coupled along the sensing line actuates into an open sensing valve position in response to the overspeed condition such that the first portion of the fuel is channeled through the sensing line towards the relief valve, and wherein the relief valve actuates from a closed relief valve position into an open relief valve position in response to being subjected to a pressure in the sensing line greater than a first predetermined threshold, such that a second portion of the fuel is released from within the fuel manifold through the relief valve via a primary discharge line coupled in parallel to the sensing line. 15. The method in accordance with claim 14 further comprising: receiving the second portion of the fuel via the primary discharge line at a first inlet of the relief valve; andreceiving the first portion of the fuel via the sensing line at a second inlet of the relief valve, wherein the relief valve actuates into the open relief valve position in response to being subjected to the pressure greater than the first predetermined threshold at the second inlet. 16. The method in accordance with claim 14, further comprising releasing the first portion of the fuel and the second portion of the fuel from the relief valve to atmosphere. 17. The method in accordance with claim 14, further comprising, subsequent to the relief valve actuating from the closed relief valve position into the open relief valve position, and in response to the relief valve being subjected to the pressure in the sensing line less than the first predetermined threshold, actuating the relief valve to the closed relief valve position and stopping the supply of the first portion of the fuel from the fuel manifold to the relief valve via the sensing line and stopping the second portion of the fuel from the fuel manifold to the relief valve via the primary discharge line.
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