Power plant including a static mixer and steam generating system via turbine extraction and compressor extraction
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02C-006/08
F02C-007/18
F01D-025/30
F02C-003/04
F02C-006/18
H02K-007/18
F02C-007/141
출원번호
US-0969142
(2015-12-15)
등록번호
US-9976479
(2018-05-22)
발명자
/ 주소
Scipio, Alston Ilford
Ekanayake, Sanji
Shaffer, Jason Brian
Klosinski, Joseph Philip
Mathai, George Vargese
출원인 / 주소
General Electric Company
대리인 / 주소
Dority & Manning, P.A.
인용정보
피인용 횟수 :
0인용 특허 :
17
초록▼
A power plant includes a compressor, a combustor downstream from the compressor and a turbine disposed downstream from the combustor. The compressor includes a compressor extraction port. The turbine includes a turbine extraction port that is in fluid communication with a hot gas path of the turbine
A power plant includes a compressor, a combustor downstream from the compressor and a turbine disposed downstream from the combustor. The compressor includes a compressor extraction port. The turbine includes a turbine extraction port that is in fluid communication with a hot gas path of the turbine and which provides a flow path for a stream of combustion gas to flow out of the turbine. An exhaust duct is disposed downstream from the turbine and receives exhaust gas from the turbine. A static mixer coupled to the turbine extraction port and to the compressor extraction port cools the stream of combustion gas upstream from the exhaust duct. The cooled combustion gas flows into the exhaust duct at a higher temperature than the exhaust gas and mixes with the exhaust gas within the exhaust duct to provide a heated exhaust gas mixture to a heat exchanger downstream from the exhaust duct.
대표청구항▼
1. A power plant, comprising: a compressor, a combustor downstream from the compressor and a turbine disposed downstream from the combustor, the compressor including a compressor extraction port disposed between an upstream end and a downstream end of the compressor, the turbine including a turbine
1. A power plant, comprising: a compressor, a combustor downstream from the compressor and a turbine disposed downstream from the combustor, the compressor including a compressor extraction port disposed between an upstream end and a downstream end of the compressor, the turbine including a turbine extraction port in fluid communication with a hot gas path of the turbine, wherein the turbine extraction port provides a flow path for a stream of combustion gas to flow out of the turbine;an exhaust duct downstream from an outlet of the turbine, wherein the exhaust duct receives exhaust gas from the turbine outlet; anda static mixer having a primary inlet fluidly coupled to the turbine extraction port, a secondary inlet fluidly coupled to the compressor extraction port and an outlet in fluid communication with the exhaust duct;wherein the static mixer cools the stream of combustion gas upstream from the exhaust duct via compressed air extracted from the compressor, wherein the cooled combustion gas is at a higher temperature than the exhaust gas, and wherein the cooled combustion gas mixes with the exhaust gas within the exhaust duct to provide a heated exhaust gas mixture to a heat exchanger disposed downstream from the exhaust duct. 2. The power plant as in claim 1, wherein the heat exchanger extracts thermal energy from the exhaust gas mixture to produce steam. 3. The power plant as in claim 1, further comprising a steam turbine disposed downstream from the heat exchanger. 4. The power plant as in claim 1, wherein the turbine comprises an inner casing, an outer casing and an extraction pipe in fluid communication with at least one turbine stage of the turbine, wherein the extraction pipe is in fluid communication with the turbine extraction port. 5. The power plant as in claim 1, further comprising a coolant injection system disposed downstream from the static mixer outlet and upstream from the exhaust duct, wherein the coolant injection system injects a coolant into the stream of cooled combustion gas flowing from the static mixer outlet. 6. The power plant as in claim 5, wherein the coolant is water. 7. The power plant as in claim 5, wherein the coolant is steam. 8. The power plant as in claim 1, further comprising a controller electronically coupled to a first control valve fluidly connected between the turbine extraction port and the static mixer inlet and a second control valve disposed upstream from the secondary inlet of the static mixer. 9. The power plant as in claim 8, further comprising a temperature monitor electronically coupled to the controller and in thermal communication with the turbine extraction port upstream from the exhaust duct, wherein the controller actuates at least one of the first control valve to increase or decrease the stream of combustion gas from the turbine and the second control valve to increase or decrease mass flow through the secondary inlet of the static mixer in response to a data signal provided by the temperature monitor to the controller. 10. The power plant as in claim 8, further comprising a steam flow monitor disposed downstream from the heat exchanger and electronically coupled to the controller, wherein the controller actuates at least one of the first control valve and the second control valve in response to a flow output signal provided to the controller by the steam flow monitor. 11. A power plant, comprising: a gas turbine having a compressor, a combustor downstream from the compressor and a turbine downstream from the combustor, the compressor including a compressor extraction port disposed between an upstream end and a downstream end of the compressor, the turbine including a first stage in fluid communication with a first turbine extraction port and a second stage in fluid communication with a second turbine extraction port, wherein the first and second turbine extraction ports provide for extraction of a stream of combustion gas out of the turbine downstream from the combustor;an exhaust duct downstream from an outlet of the turbine, wherein the exhaust duct receives exhaust gas from the turbine; anda static mixer having a primary inlet fluidly coupled to at least one of the first and second turbine extraction ports, a secondary inlet fluidly coupled to the compressor extraction port and an outlet fluidly coupled to the exhaust duct;wherein the static mixer cools the stream of combustion gas upstream from the exhaust duct via compressed air extracted from the compressor, wherein the cooled combustion gas is at a higher temperature than the exhaust gas, and wherein the cooled combustion gas mixes with the exhaust gas within the exhaust duct to provide a heated exhaust gas mixture to a heat exchanger disposed downstream from the exhaust duct. 12. The power plant as in claim 11, wherein the heat exchanger extracts thermal energy from the exhaust gas mixture to produce steam. 13. The power plant as in claim 11, further comprising a steam turbine disposed downstream from the heat exchanger. 14. The power plant as in claim 11, further comprising a coolant injection system disposed downstream from the static mixer outlet and upstream from the exhaust duct, wherein the coolant injection system injects a coolant into the stream of cooled combustion gas flowing from the static mixer outlet. 15. The power plant as in claim 14, wherein the coolant is water. 16. The power plant as in claim 14, wherein the coolant is steam. 17. The power plant as in claim 11, further comprising a controller electronically coupled to a first control valve fluidly connected between the first turbine extraction port and the static mixer inlet, a second control valve fluidly connected between the second turbine extraction port and the static mixer inlet and a third control valve disposed upstream from the secondary inlet of the static mixer. 18. The power plant as in claim 17, further comprising a temperature monitor electronically coupled to the controller and disposed downstream from the static mixer outlet, wherein the controller actuates at least one of the first and second control valves to increase or decrease the stream of combustion gas from the turbine and actuates the third control valve to increase or decrease mass flow through the secondary inlet of the static mixer in response to a data signal provided to the controller by the temperature monitor. 19. The power plant as in claim 17, further comprising a flow monitor disposed downstream from the heat exchanger and electronically coupled to the controller, wherein the controller actuates at least one of the first control valve, the second control valve and the third control valve in response to a flow output signal provided by the flow monitor to the controller.
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이 특허에 인용된 특허 (17)
Bunker Ronald S. (Niskayuna NY), Closed-circuit air cooled turbine.
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