Apparatus for elimination of transient pressure spikes on stiff fluid systems
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02C-007/22
F02C-007/232
출원번호
US-0258304
(2005-10-25)
등록번호
US-7464532
(2008-12-16)
발명자
/ 주소
Shahroudi,Kamran Eftekhari
Greeb,Kevin E.
출원인 / 주소
Woodward Governor Company
대리인 / 주소
Reinhart Boerner Van Deuren P.C.
인용정보
피인용 횟수 :
0인용 특허 :
4
초록▼
An apparatus for reducing pressure spikes in a fuel line having a shut-off valve is provided. The apparatus comprises a body housing a biasing member and a moveable separation member. The body has first, second, and third chambers. The first and second chambers are coupled to upstream and downstream
An apparatus for reducing pressure spikes in a fuel line having a shut-off valve is provided. The apparatus comprises a body housing a biasing member and a moveable separation member. The body has first, second, and third chambers. The first and second chambers are coupled to upstream and downstream sides of the fuel line, respectively. The third chamber is coupled to a return line. When the shut-off valve is open, the separation member is biased toward the first chamber and separates the first and second chambers. When the shut-off valve is closed, the separation member expands the first chamber and places the first chamber and the third chamber in fluid communication once the separation member has gained a significant speed. The expanded first chamber accumulates fuel and the third chamber accumulates and vents the fuel such that transient pressure spikes are reduced and unlikely to damage a turbine system.
대표청구항▼
What is claimed is: 1. An apparatus for reducing transient pressure spikes in a fuel line of a turbine system, the turbine system having a shut-off valve and a relief valve, the relief valve upstream of the shut-off valve in the fuel line, the apparatus comprising: a body forming a first chamber an
What is claimed is: 1. An apparatus for reducing transient pressure spikes in a fuel line of a turbine system, the turbine system having a shut-off valve and a relief valve, the relief valve upstream of the shut-off valve in the fuel line, the apparatus comprising: a body forming a first chamber and a second chamber, the first chamber coupled to the fuel line upstream of the shut-off valve, the second chamber coupled to the fuel line downstream of the shut-off valve; a biasing member within the body; and a moveable separation member within the body, the moveable separation member forcibly biased toward the first chamber by the biasing member and separating the first and second chambers when the shut-off valve is open, the moveable separation member adapted to expand the first chamber and compress the biasing member when the shut-off valve is closed, the expanding first chamber accumulating fuel while the relief valve is opening such that the transient pressure spikes are reduced and unlikely to cause damage to the turbine system. 2. The apparatus of claim 1, wherein the biasing member is a partially compressed spring. 3. The apparatus of claim 1, wherein the moveable separation member is a member selected from the group consisting of a plunger, a diaphragm, a piston, and a bladder. 4. The apparatus of claim 1, wherein a first portion of the moveable separation member is disposed in the first chamber and a second portion is disposed in the second chamber, the second portion forcibly biased further into the second chamber when the shut-off valve is closed. 5. The apparatus of claim 1, wherein the second chamber is coupled to the fuel line downstream from the shut-off valve by a sense line, the sense line including a sense line orifice. 6. An apparatus for reducing transient pressure spikes in a fuel line of a turbine system, the turbine system having a shut-off valve, the apparatus comprising: a body having first, second, and third chambers, the first chamber coupled to the fuel line upstream of the shut-off valve and the second chamber coupled to the fuel line downstream of the shut-off valve, the third chamber adjacent to and coupleable with the first chamber; a biasing member within the body; and a moveable separation member within the body, the moveable separation member biased toward the first chamber by the biasing member and separating the first chamber from the second chamber when the shut-off valve is open, the moveable separation member adapted to expand the first chamber, compress the biasing member, and place the first chamber and the third chamber in fluid communication when the shut-off valve is closed, at least one of the expanding first chamber and the third chamber accumulating fuel when the shut-off valve is closed such that the transient pressure spikes are reduced and unlikely to cause damage to the turbine system. 7. The apparatus of claim 6, wherein the expanded first chamber and the third chamber are adapted to provide a relief valve with time to open when the shut-off valve is closed. 8. The apparatus of claim 6, wherein the third chamber is coupled to a return line, the return line adapted to evacuate the fuel from at least one of the third chamber, the expanded first chamber, and the line upstream of the shut-off valve when the shut-off valve is closed. 9. The apparatus of claim 6, wherein the third chamber includes an opening directed toward the first chamber and the moveable separation member includes an aperture directed toward the third chamber, the moveable separation member adapted to block the opening when the shut-off valve is open and adapted to align the aperture and the opening when the shut-off valve is closed. 10. The apparatus of claim 6, wherein the moveable separation member is a plunger having an accumulation cavity, the accumulation cavity having an opening directed toward the first chamber and adapted to receive the fuel when the shut-off valve is closed, the received fuel biasing the moveable separation member toward the second chamber. 11. The apparatus of claim 6, wherein a first pressure in the first cavity is equivalent to an upstream pressure in the line upstream of the shut-off valve. 12. The apparatus of claim 6, wherein a second pressure in the second cavity is less than a downstream pressure in the line downstream of the shut-off valve. 13. The apparatus of claim 6, wherein a force acting on the moveable separation member from a first pressure in the first cavity is equivalent to a counteracting force upon the moveable separation member from both a second pressure in the second cavity and the biasing member when the shut-off valve is open. 14. The apparatus of claim 6, wherein a force acting on the moveable separation member from a first pressure in the first cavity is greater than a counteracting force upon the moveable separating member from both a second pressure in the second cavity and the biasing member when the shut-off valve is closed and fuel is flowing in the fuel line. 15. The apparatus of claim 6, wherein the fuel is a fuel selected from the group consisting of jet fuel, diesel fuel, and kerosene. 16. The apparatus of claim 6, wherein the shut-off valve is disposed on a supply skid within a gas turbine system, the supply skid adapted to supply the fuel line with the fuel. 17. The apparatus of claim 6, wherein the shut-off valve is disposed on a metering skid within a gas turbine system, the metering skid adapted to monitor the fuel transported by the fuel line. 18. An apparatus for reducing transient pressure spikes in a fuel line of a turbine system, the apparatus comprising: a body including first, second, and third chambers, the first chamber coupled to the fuel line upstream of a shut-off valve and the second chamber coupled to the fuel line downstream of the shut-off valve, the third chamber adjacent to and coupleable with the first chamber, the third chamber coupled to a return line; a biasing member within the body; and a moveable separation member within the body, the moveable separation member biased toward the first chamber by the biasing member and separating the first chamber from the second chamber, the moveable separation member restricting flow between the first and third chambers when the shut-off valve is open, the moveable separation member adapted to expand the first chamber, compress the biasing member, and place the first chamber and the third chamber in fluid communication when the shut-off valve is closed, the expanded first chamber accumulating fuel and the third chamber evacuating the fuel through the return line such that the transient pressure spikes are reduced and unlikely to cause damage to the turbine system. 19. The apparatus of claim 18, wherein the third chamber further accumulates the fuel. 20. The system of claim 18, wherein the biasing member is a partially compressed spring and the moveable separation member is a plunger having an accumulation cavity with an opening directed toward the first chamber. 21. The system of claim 18, wherein the shut-off valve is integrally formed with the body.
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이 특허에 인용된 특허 (4)
Collins Brian J. (Derby GB2) Butler Reginald J. (Derby GB2), Control systems for gas turbine aeroengines.
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