Fuel supply system for a gas turbine combustor
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02C-007/22
F23R-003/28
F23R-003/34
F02C-007/228
출원번호
US-0629717
(2015-02-24)
등록번호
US-9951693
(2018-04-24)
발명자
/ 주소
Elwasila, Nazar Ahmed
Rohrssen, Robert Joseph
Pentecost, Ronnie Ray
Stoia, Lucas John
출원인 / 주소
GENERAL ELECTRIC COMPANY
대리인 / 주소
Dority & Manning, PA
인용정보
피인용 횟수 :
0인용 특허 :
4
초록▼
A fuel supply system for a gas turbine combustor includes a fuel distribution manifold. A first fuel circuit extends from the fuel distribution manifold in a first circumferential direction around an outer surface of the outer casing and provides for fluid communication from the fuel distribution ma
A fuel supply system for a gas turbine combustor includes a fuel distribution manifold. A first fuel circuit extends from the fuel distribution manifold in a first circumferential direction around an outer surface of the outer casing and provides for fluid communication from the fuel distribution manifold, through the outer casing and to at least one fuel injector disposed within the outer casing. A second fuel circuit extends from the fuel distribution manifold in a second circumferential direction around the outer surface of the outer casing. The second fuel circuit provides for fluid communication from the fuel distribution manifold, through the outer casing and to at least one fuel injector within the outer casing. In particular configurations, the fuel supply system includes a shield that surrounds at least a portion of the outer casing and at least partially encases the first fuel circuit and the second fuel circuit.
대표청구항▼
1. A fuel supply system for a gas turbine combustor, the system comprising: an outer casing;a liner positioned within the outer casing;a forward casing positioned axially upstream of the outer casing such that the forward casing is positioned outside of the outer casing, the outer casing and the for
1. A fuel supply system for a gas turbine combustor, the system comprising: an outer casing;a liner positioned within the outer casing;a forward casing positioned axially upstream of the outer casing such that the forward casing is positioned outside of the outer casing, the outer casing and the forward casing at least partially defining a first plenum within the outer casing and the forward casing;a fuel distribution manifold coupled to the outer casing;a first fuel circuit that extends from the fuel distribution manifold in a first circumferential direction around an outer surface of the forward casing and an outer surface of the outer casing, wherein the first fuel circuit provides for fluid communication from the fuel distribution manifold, through the outer casing and to at least one fuel injector of a plurality of fuel injectors that are disposed within the outer casing; anda second fuel circuit that extends from the fuel distribution manifold in a second circumferential direction around the outer surface of the forward casing and the outer surface of the outer casing, wherein the second fuel circuit provides for fluid communication from the fuel distribution manifold, through the outer casing and to at least one other fuel injector of the plurality of fuel injectors; anda shield that circumferentially surrounds at least a portion of the forward casing, the shield at least partially encasing the first fuel circuit and the second fuel circuit, wherein the shield is disposed outside of the first plenum. 2. The system as in claim 1, wherein the shield at least partially defines a second plenum between the forward casing and the shield, wherein the first and second fuel circuits extend within the second plenum. 3. The system as in claim 1, wherein the first fuel circuit includes a primary fuel line that is in fluid communication with the fuel distribution manifold and a plurality of secondary fuel lines, wherein each secondary fuel line of the plurality of secondary fuel lines is in fluid communication with the primary fuel line and the at least one fuel injector of the plurality of fuel injectors. 4. The system as in claim 3, further comprising fittings fluidly connected to the plurality of secondary fuel lines of the first fuel circuit, wherein the fittings provide for fluid communication through the outer casing. 5. The system as in claim 1, wherein the second fuel circuit includes a primary fuel line that is in fluid communication with the fuel distribution manifold and a plurality of secondary fuel lines, wherein each secondary fuel line of the plurality of secondary fuel lines is in fluid communication with the primary fuel line and the at least one other fuel injector of the plurality of fuel injectors. 6. The system as in claim 5, further comprising fittings fluidly connected to the plurality of secondary fuel lines of the second fuel circuit, wherein the fittings provide for fluid communication through the outer casing. 7. The system as in claim 1, wherein the forward casing surrounds at least a portion of the gas turbine combustor. 8. A combustor for a gas turbine, the combustor comprising: an outer casing;a liner positioned within the outer casing;a forward casing coupled to the outer casing, the forward casing being positioned axially upstream of the outer casing such that the forward casing is positioned outside of the outer casing;an end cover coupled to the forward casing, wherein the outer casing, the forward casing, and the end cover at least partially define a first plenum with the outer casing and the forward casing;a primary fuel nozzle that extends axially downstream from the end cover within the forward casing and the outer casing;a primary combustion zone defined downstream from the primary fuel nozzle;a plurality of fuel injectors disposed within the outer casing downstream from the primary combustion zone;a fuel distribution manifold coupled to the forward casing;a first fuel circuit that extends from the fuel distribution manifold in a first circumferential direction around an outer surface of the forward casing and an outer surface of the outer casing, wherein the first fuel circuit provides for fluid communication from the fuel distribution manifold, through the outer casing and to at east one fuel injector of the plurality of fuel injectors;a second fuel circuit that extends from the fuel distribution manifold in a second circumferential direction around the outer surface of the forward casing and the outer surface of the outer casing, wherein the second fuel circuit provides for fluid communication from the fuel distribution manifold, through the outer casing and to at east one other fuel injector of the plurality of fuel injectors; anda shield that circumferentially surrounds at least a portion of the forward casing, the shield at least partially encasing the first fuel circuit and the second fuel circuit, wherein the shield is disposed outside of the first plenum. 9. The combustor as in claim 8, wherein the shield at least partially defines a second plenum between the forward casing and the shield, wherein the first and second fuel circuits extend within the second plenum. 10. The combustor as in claim 8, wherein the first fuel circuit includes a primary fuel line that is in fluid communication with the fuel distribution manifold and a plurality of secondary fuel lines, wherein each secondary fuel line of the plurality of secondary fuel lines is in fluid communication with the primary fuel line and the at least one fuel injector of the plurality of fuel injectors. 11. The combustor as in claim 10, further comprising fittings fluidly connected to the secondary fuel lines, wherein the fittings provide for fluid communication through the outer casing. 12. The combustor as in claim 8, wherein the second fuel circuit includes a primary fuel line that is in fluid communication with the fuel distribution manifold and a plurality of secondary fuel lines, wherein each secondary fuel line of the plurality of secondary fuel lines is in fluid communication with the primary fuel line and the at least one other fuel injector of the plurality of fuel injectors. 13. The combustor as in claim 12, further comprising fittings fluidly connected to the secondary fuel lines, wherein the fittings provide for fluid communication through the outer casing. 14. The combustor as in claim 8, wherein the forward casing surrounds at least a portion of the combustor. 15. A gas turbine, comprising: a compressor;a turbine; anda combustor disposed downstream from the compressor and upstream of the turbine, the combustor comprising: an outer casing;a liner positioned within the outer casing;a forward casing coupled to the outer casing, the forward casing being positioned axially upstream of the outer casing such that the forward casing is positioned outside of the outer casing;an end cover coupled to the forward casing, wherein the outer casing, the forward casing, and the end cover at least partially define a first plenum with the outer casing and the forward casing;a fuel nozzle that extends axially downstream from the end cover within the forward casing and the outer casing;a fuel supply in fluid communication with the combustor;a plurality of fuel injectors disposed within the outer casing downstream from the fuel nozzle;a fuel distribution manifold coupled to the forward casing of the combustor, wherein the fuel distribution manifold is in fluid communication with the fuel supply;a first fuel circuit that extends from the fuel distribution manifold in a first circumferential direction around an outer surface of the forward casing and an outer surface of the outer casing, wherein the first fuel circuit provides for fluid communication from the fuel distribution manifold, through the outer casing and to at east one fuel injector of the plurality of fuel injectors;a second fuel circuit that extends from the fuel distribution manifold in a second circumferential direction around the outer surface of the forward casing and the outer surface of the outer casing, wherein the second fuel circuit provides for fluid communication from the fuel distribution manifold, through the outer casing and to at least one other fuel injector of the plurality of fuel injectors; anda shield that circumferentially surrounds at least a portion of the forward casing, the shield at least partially encasing the first fuel circuit and the second fuel circuit, wherein the shield is disposed outside of the first plenum. 16. The gas turbine as in claim 15, wherein the shield at least partially defines a second plenum between the forward casing and the shield, wherein the first and second fuel circuits extend within the second plenum. 17. The gas turbine as in claim 15, wherein the first fuel circuit includes a primary fuel line that is in fluid communication with the fuel distribution manifold and a plurality of secondary fuel lines, wherein each secondary fuel line of the plurality of secondary fuel lines of the first fuel circuit is in fluid communication with the primary fuel line of the first fuel circuit and the at least one fuel injector of the plurality of fuel injectors, and wherein the second fuel circuit includes a primary fuel line that is in fluid communication with the fuel distribution manifold and a plurality of secondary fuel lines, wherein each secondary fuel line of the plurality of secondary fuel lines of the second fuel circuit is in fluid communication with the primary fuel line of the second fuel circuit and the at least one other fuel injector of the plurality of fuel injectors.
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이 특허에 인용된 특허 (4)
Shekleton Jack R. (San Diego CA), Dual zone single manifold fuel injection system.
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