System and method for transitioning between fuel supplies for a combustion system
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02M-033/02
F02C-007/22
G06F-019/00
출원번호
US-0042322
(2011-03-07)
등록번호
US-8340886
(2012-12-25)
발명자
/ 주소
Nenmeni, Vijay Raghavendran
Rozdolski, Michael John
Chillar, Rahul Jaikaran
출원인 / 주소
General Electric Company
대리인 / 주소
Fletcher Yoder, P.C.
인용정보
피인용 횟수 :
5인용 특허 :
36
초록▼
A system includes a turbine fuel controller. The turbine fuel controller includes a purge control logic configured to control a purge sequence of mixing a purge gas with a first fuel during a first fuel shutdown, wherein the purge sequence is configured to open a purge valve for the purge gas before
A system includes a turbine fuel controller. The turbine fuel controller includes a purge control logic configured to control a purge sequence of mixing a purge gas with a first fuel during a first fuel shutdown, wherein the purge sequence is configured to open a purge valve for the purge gas before fully closing a fuel valve for the first fuel.
대표청구항▼
1. A system, comprising: a turbine fuel controller, comprising: a purge control logic configured to control a purge sequence of mixing a purge gas with a first fuel during a first fuel shutdown, wherein the purge sequence is configured to open a purge valve for the purge gas before fully closing a f
1. A system, comprising: a turbine fuel controller, comprising: a purge control logic configured to control a purge sequence of mixing a purge gas with a first fuel during a first fuel shutdown, wherein the purge sequence is configured to open a purge valve for the purge gas before fully closing a fuel valve for the first fuel. 2. The system of claim 1, wherein the purge sequence is configured to fully open the purge valve before fully closing the fuel valve. 3. The system of claim 1, wherein the purge sequence is configured to start opening the purge valve after starting to close the fuel valve. 4. The system of claim 3, wherein the purge sequence is configured to start opening the purge valve after closing of the fuel valve is equal to or greater than a fuel valve closing threshold percentage. 5. The system of claim 1, wherein the purge sequence is configured to increase a rate of opening the purge valve if a flame extinguishes in a gas turbine engine. 6. The system of claim 1, comprising a gas turbine engine having the turbine fuel controller. 7. The system of claim 1, wherein the turbine fuel controller comprises a fuel transition control logic configured to control a fuel transition from the first fuel to a second fuel for a gas turbine engine. 8. A system, comprising: a fuel controller, comprising: a fuel transition control logic configured to control a fuel transition from a first fuel to a second fuel for a combustion system; anda purge control logic configured to control a purge sequence of mixing a purge gas with the first fuel during the fuel transition, wherein the purge sequence is configured to open a purge valve for the purge gas before fully closing a fuel valve for the first fuel. 9. The system of claim 8, wherein the purge sequence comprises a fuel valve closing duration of progressively closing the fuel valve from a first open position to a first closed position, the purge sequence comprises a purge valve opening duration of progressively opening the purge valve from a second closed position to a second open position, and the fuel valve closing duration overlaps the purge valve opening duration. 10. The system of claim 9, wherein the purge valve opening duration completes before the fuel valve reaches the first closed position during the fuel valve closing duration. 11. The system of claim 9, wherein the purge valve opening duration starts after initiation of the fuel valve closing duration. 12. The system of claim 11, wherein the purge valve opening duration starts after approximately 70 percent closure of the fuel valve during the fuel valve closing duration. 13. The system of claim 9, wherein a rate of opening the purge valve increases during the purge valve opening duration if a flame extinguishes in the combustion system. 14. The system of claim 8, comprising the combustion system having the fuel controller. 15. The system of claim 14, wherein the combustion system comprises a gas turbine engine. 16. The system of claim 8, wherein the first fuel is a gas fuel and the second fuel is a liquid fuel, or both the first and second fuels are gas fuels. 17. The system of claim 8, wherein the purge gas comprises nitrogen, carbon dioxide, argon, helium, or steam. 18. A method, comprising: transitioning a combustion system from a first fuel to a second fuel; andmixing a purge gas with the first fuel during the transitioning, wherein mixing comprises opening a purge valve for the purge gas before fully closing a fuel valve for the first fuel. 19. The method of claim 18, wherein opening the purge valve comprises fully opening the purge valve before fully closing the fuel valve. 20. The method of claim 18, wherein opening the purge valve comprises starting to open the purge valve after closing of the fuel valve is equal to or greater than a fuel valve closing threshold percentage.
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이 특허에 인용된 특허 (36)
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