Load absorption arrangements for gas turbine engines
원문보기
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0104576
(2005-04-13)
|
등록번호 |
US-7717669
(2010-06-10)
|
우선권정보 |
GB-0410903.9(2004-05-14) |
발명자
/ 주소 |
- Sheath, Michael J.
- McCabe, Paul S.
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
6 |
초록
▼
A load absorption arrangement 40 for absorbing loads in a variable stator vane positioning system of a gas turbine engine includes a valve 42 which has a first operating condition to enable the load absorption arrangement 40 to transmit load, and a second operating condition, which is operable above
A load absorption arrangement 40 for absorbing loads in a variable stator vane positioning system of a gas turbine engine includes a valve 42 which has a first operating condition to enable the load absorption arrangement 40 to transmit load, and a second operating condition, which is operable above a predetermined load, in which the valve 42 can release to enable the load absorption arrangement 40 to absorb the load thereon. The arrangement 40 is particularly suitable for absorbing shock loads which may arise under engine surge.
대표청구항
▼
We claim: 1. A load absorption arrangement for absorbing loads in a variable stator vane positioning system, the arrangement comprising: a piston arrangement within a housing, the housing filled with incompressible fluid; a release means operable to control the flow of the incompressible fluid from
We claim: 1. A load absorption arrangement for absorbing loads in a variable stator vane positioning system, the arrangement comprising: a piston arrangement within a housing, the housing filled with incompressible fluid; a release means operable to control the flow of the incompressible fluid from one side of the piston to the other, wherein in a normal operation position the release means prevents the incompressible fluid from flowing from one side of the piston to the other and the piston is held in a fixed position within the housing such that it transmits desired movements to variable stator vanes, wherein in response to a transient load on the piston arrangement exceeding a predetermined threshold the release means will automatically allow the incompressible fluid to flow from one side of the piston to the other, to allow the piston to move freely within the housing, and wherein in response to the transient load falling below the predetermined threshold the release means will automatically return to the normal operation position. 2. An arrangement according to claim 1, wherein the release means comprises a valve. 3. An arrangement according to claim 2, wherein the valve is in a closed position when the release means is in the normal operating condition. 4. An arrangement according to claim 2, wherein the valve is in an open position when the release means is in a second operating condition. 5. An arrangement according to claim 1, wherein the release means includes a fluid transfer conduit. 6. An arrangement according to claim 5, wherein the fluid transfer conduit extends between a first fluid containment compartment and a second fluid containment compartment. 7. An arrangement according to claim 6, wherein the fluid transfer conduit includes a valve. 8. An arrangement according to claim 1, wherein the release means includes positioning means to locate the arrangement in a predetermined position when the release means is in the normal operating condition. 9. An arrangement according to claim 8, wherein the positioning means comprises a resilient means locatable within the fluid containment housing. 10. An arrangement according to claim 5, and in which the release means includes positioning means to locate the arrangement in a predetermined position when the release means is in a first operating condition, and in which the positioning means comprises a resilient means locatable within the fluid containment housing, wherein the resilient means includes a resilient member located within a first fluid containment compartment and operable between the fluid containment housing and the fluid displacement member to bias the fluid displacement member in a first direction. 11. An arrangement according to claim 10, wherein the resilient means includes a further resilient member located within a second fluid containment compartment and operable between the fluid containment housing and the fluid displacement member to bias the fluid displacement member in a second direction, opposite to the first direction. 12. An arrangement according to claim 11, wherein the resilient member and further resilient member abut respectively opposite surfaces of the fluid displacement member. 13. An arrangement according to claim 11, wherein the respective stiffness of the resilient members defines the predetermined position of the arrangement when the release means is in a first operating condition. 14. An arrangement according to claim 11, wherein the resilient member and further resilient member each comprise a spring. 15. A gas turbine engine comprising: a compressor having a plurality of alternative stages of rotor blades and stator vanes; and a combustor, wherein, stator vanes in a stage of stator vanes of the stages of stator vanes are connected to a load absorption arrangement, the load absorption arrangement having: a piston arrangement within a housing, the housing filled with incompressible fluid; a release means operable to control the flow of the incompressible fluid from one side of the piston to the other, wherein in a normal operation position the release means prevents the incompressible fluid from flowing from one side of the piston to the other and the piston is held in a fixed position within the housing such that it can transmit desired movements to variable stator vanes, wherein in response to a transient load on the piston arrangement exceeding a predetermined threshold the release means will automatically allow the incompressible fluid to flow from one side of the piston to the other, to allow the piston to move freely within the housing, and wherein in response to the transient load falling below the predetermined threshold the release means will automatically return to the normal operation position. 16. A gas turbine engine according to claim 15, wherein the gas turbine engine includes a control rod and the control rod comprises the load absorption arrangement. 17. A gas turbine engine according to claim 15, wherein the gas turbine engine includes an actuator and the actuator comprises the load absorption arrangement.
이 특허에 인용된 특허 (6)
-
Dawson John (Boxford MA), Actuator for variable vanes.
-
Braswell, Douglas K.; Nelson, Del R.; Dick, Brian W., Position-sensitive shock absorber.
-
Kuwayama Kiyoaki (Nagoya JPX) Hirabayashi Katsumi (Nagoya JPX), Stabilizer device for motor vehicles.
-
Lund Mark A. (Escondido CA), Tilt correction system.
-
Farrar Peter G. G. (Derby GB2), Variable stator vane arrangement for an axial flow compressor.
-
Seymour John R. (Lowell MA) Gardner Craig M. (Danvers MA) Wellner Kenneth V. (Westminster MA) Luz James J. (Tewksbury MA), Vibration damper assembly.
이 특허를 인용한 특허 (2)
-
Kramer, Klaus, Elastic connection element with variable rigidity.
-
Popovic, Predrag; Carnell, Jr., William Francis; Rodwell, Andrew Mitchell, Method and apparatus for operating a gas turbine engine.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.