Method and apparatus to control part-load performance of a turbine
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02C-009/18
F01D-011/24
F01D-009/06
F01D-005/18
출원번호
US-0366649
(2012-02-06)
등록번호
US-9541008
(2017-01-10)
발명자
/ 주소
Reed, Robert Joseph
출원인 / 주소
GENERAL ELECTRIC COMPANY
대리인 / 주소
Dority & Manning, PA
인용정보
피인용 횟수 :
0인용 특허 :
15
초록▼
A method of controlling the part-load performance of a turbine includes generating a bypass flow in the turbine by removing a portion of a compressed fluid from a compressor of the turbine, determining an operating load of the turbine, transmitting the bypass flow to a turbine section of the turbine
A method of controlling the part-load performance of a turbine includes generating a bypass flow in the turbine by removing a portion of a compressed fluid from a compressor of the turbine, determining an operating load of the turbine, transmitting the bypass flow to a turbine section of the turbine; and selectively heating the bypass flow according to the determined operating load of the turbine.
대표청구항▼
1. A turbine, comprising: a compressor to intake a fluid and compress the fluid;a combustion section to combust a fuel to generate heated fluid by heating the fluid from the compressor;a turbine section to convert the heated fluid to work, wherein the turbine section receives heated compressed air d
1. A turbine, comprising: a compressor to intake a fluid and compress the fluid;a combustion section to combust a fuel to generate heated fluid by heating the fluid from the compressor;a turbine section to convert the heated fluid to work, wherein the turbine section receives heated compressed air directly from the combustion section; anda bypass circuit to generate a bypass flow by taking in compressed fluid from the compressor, the bypass circuit including: a valve to direct the bypass flow to a heat exchanger to heat the bypass flow and from the heat exchanger directly to the turbine section according to one operation mode of the turbine, and to direct the bypass flow directly to the turbine in another operation mode of the turbine, wherein the bypass flow flows from a portion of the compressor between a compressor inlet and a compressor outlet directly to the valve;a first conduit to transmit the bypass flow from the compressor to the valve;a second conduit to transmit the bypass flow from the valve to a first inlet on the turbine section, the first inlet being coupled to a first vane;a third conduit to transmit the bypass flow from the valve to the heat exchanger;a fourth conduit to transmit the bypass flow from the heat exchanger to a second inlet on the turbine section, the second inlet being coupled to a second vane; andwherein the second and fourth conduits are connected to each other by a connection conduit extending axially along the turbine section, and the first and second inlets are located along the connection conduit. 2. The turbine of claim 1, wherein the bypass circuit heats the bypass flow when the turbine operates in a part-load mode, and the bypass circuit does not heat the bypass flow when the turbine operates in a peak-load mode. 3. The turbine of claim 1, further comprising: an exhaust section to output the heated fluid from the turbine section,wherein the bypass circuit heats the bypass flow by passing the bypass flow through the heat exchanger in the exhaust section. 4. The turbine of claim 3, wherein the valve selectively outputs the bypass flow from the compressor to one of the exhaust section and the turbine section. 5. The turbine of claim 4, wherein the valve outputs the bypass flow to the exhaust section when the turbine operates in a part-load mode, and the valve outputs the bypass flow to the turbine section when the turbine operates in a peak-load mode. 6. The turbine of claim 3, wherein the exhaust section includes an inlet to transmit the bypass flow from the valve to the heat exchanger, and an outlet to transmit the bypass flow from the heat exchanger to the turbine section. 7. The turbine of claim 1, wherein the turbine section includes a plurality of vanes to direct the heated fluid to a plurality of annular stages of buckets, and the bypass circuit outputs the bypass flow to the plurality of vanes of the turbine section. 8. A power generation system, comprising: a compressor section having a compressor to take in and compress a fluid, a combustion section to heat the fluid from the compressor, a turbine section that receives fluid directly from the combustion section to drive a shaft with the fluid heated by the combustion section, an exhaust section to eject the fluid from the turbine section, a bypass circuit to generate a bypass flow by taking in a portion of the fluid compressed by the compressor, and a valve to direct the bypass flow to a heat exchanger to heat the bypass flow and from the heat exchanger directly to a second inlet on the turbine section according to one operation mode of the turbine, the second inlet being coupled to a second vane, and to direct the bypass flow directly to a first inlet on the turbine in another operation mode of the turbine, the first inlet being coupled to a first vane, wherein the bypass flow flows from a portion of the compressor between a compressor inlet and a compressor outlet directly to the valve;wherein the first and second inlets are located along a connection conduit that extends axially along the turbine section; anda turbine control unit to determine an operating mode of the turbine, and to control the bypass circuit to transmit the bypass flow to one of the turbine section and the heat exchanger according to a determined operating mode. 9. The power generation system of claim 8, wherein the turbine control unit controls the bypass circuit of the turbine to transmit the bypass flow directly to the turbine section when the turbine operates in a peak-load operating mode, and to transmit the bypass flow to the heat exchanger when the turbine operates in a part-load operating mode. 10. The power generation system of claim 9, wherein the turbine control unit receives an input instruction to operate the turbine at a predetermined operating mode, analyzes the input instruction to determine the operating mode of the turbine, and outputs control signals to control a level of combustion in the combustion section and to transmit the bypass flow directly to the turbine section when the turbine operates in the peak-load operating mode, and to transmit the bypass flow to the heat exchanger when the turbine operates in the part-load operating mode. 11. The power generation system of claim 8, wherein the bypass circuit of the turbine includes a conduit from the exhaust section to the turbine section to direct the bypass flow from the exhaust section to the turbine section. 12. The power generation system of claim 8, wherein the exhaust section of the turbine includes the heat exchanger. 13. A method to control part-load performance of a turbine, the method comprising: generating a bypass flow in a turbine by removing a portion of a compressed fluid from a compressor of the turbine;determining an operating load of the turbine;transmitting the bypass flow to a heat exchanger to heat the bypass flow and from the heat exchanger directly to a second inlet on a turbine section according to one operation mode of the turbine, the second inlet being coupled to a second vane; andtransmitting the bypass flow to a first inlet on the turbine section of the turbine, the turbine section receiving heated compressed air directly from a combustion section according to another operation mode of the turbine, the first inlet being coupled to a first vane;wherein the first and second inlets are located along a connection conduit that extends axially along the turbine section; andwherein the bypass flow flows from a portion of the compressor between a compressor inlet and a compressor outlet directly to a valve that directs the bypass flow to either the heat exchanger or directly to the turbine section. 14. The method of claim 13, wherein when it is determined that the turbine operates at peak-load, the bypass flow is transmitted directly to the turbine section, and when it is determined that the turbine operates at part-load, the bypass flow is heated before being transmitted to the turbine section. 15. The method of claim 14, wherein the heat exchanger is in an exhaust section of the turbine and heats the bypass flow when it is determined that the turbine operates at part-load. 16. The method of claim 13, wherein selectively heating the bypass flow includes controlling a valve to close a conduit to an exhaust section of the turbine when the bypass flow is not heated, and to close a conduit to the turbine section when the bypass flow is heated. 17. The method of claim 13, wherein determining the operating load of the turbine comprises: receiving an instruction to operate the turbine at a predetermined operating load; andanalyzing the instruction to determine the operating load of the turbine.
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