IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0096934
(2011-04-28)
|
등록번호 |
US-8770950
(2014-07-08)
|
우선권정보 |
DE-20311033 (2003-07-17); EP-PCT/EP2004/007948 (2004-07-16) |
발명자
/ 주소 |
|
출원인 / 주소 |
- Cameron International Corporation
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
9 |
초록
▼
Pump device for hydraulically activating a valve in particular used for oil and gas exploration wherein such a valve may be a safety valve assigned to a riser or a tree, said pump device including a piston cylinder unit from which pressurized hydraulic fluid can be pumped in direction to the valve.
Pump device for hydraulically activating a valve in particular used for oil and gas exploration wherein such a valve may be a safety valve assigned to a riser or a tree, said pump device including a piston cylinder unit from which pressurized hydraulic fluid can be pumped in direction to the valve. To improve such a pump device so that the pressure of the hydraulic fluid is produced in particular at the corresponding site and near to the valve and is safe and constructed in a simple way an electrical drive means is movably connected to a piston of the piston cylinder unit for alternating movement in axial direction of the piston within the cylinder.
대표청구항
▼
1. A system, comprising: a hydrocarbon production safety valve system, comprising: a hydraulic pump comprising a hydraulic inlet and a hydraulic outlet, wherein the hydraulic pump is configured to pump a hydraulic fluid from the hydraulic inlet to the hydraulic outlet;a hydraulically actuated safety
1. A system, comprising: a hydrocarbon production safety valve system, comprising: a hydraulic pump comprising a hydraulic inlet and a hydraulic outlet, wherein the hydraulic pump is configured to pump a hydraulic fluid from the hydraulic inlet to the hydraulic outlet;a hydraulically actuated safety valve coupled to the hydraulic outlet, wherein the hydraulically actuated safety valve receives the hydraulic fluid from the hydraulic outlet, the hydraulically actuated safety valve and the hydraulic pump are physically separate from one another, and the hydraulically actuated safety valve is proximate to the hydraulic pump; anda first servomotor and a second servomotor, wherein the first and second servomotors are arranged redundantly with respect to one another, and the first and second servomotors are configured to operate an internal safety valve. 2. The system of claim 1, wherein the hydraulic pump and the hydraulically actuated safety valve are configured to be subsea devices. 3. The system of claim 1, wherein the hydraulic pump comprises: a piston-cylinder unit having a piston disposed within a cylinder, the cylinder comprising:a first port coupled to an internal discharge line disposed in an interior of the hydraulic pump and coupled to the hydraulic outlet; anda second port coupled to an intermediate reservoir disposed in the interior of the hydraulic pump, wherein the intermediate reservoir is configured to store a portion of the hydraulic fluid; andan electrical drive movably coupled to the piston, wherein the electrical drive is configured to alternately move the piston in opposite directions between a first position and a second position within the cylinder. 4. The system of claim 3, wherein the piston is configured to move toward the first position to drive the hydraulic fluid from the cylinder out through the hydraulic outlet, and the piston is configured to move toward the second position to draw the hydraulic fluid from the intermediate reservoir into the cylinder. 5. The system of claim 4, wherein the hydraulic pump comprises: a first non-return valve coupled to the first port, wherein the first non-return valve is configured to block flow of the hydraulic fluid from the hydraulic outlet into the cylinder; anda second non-return valve coupled to the second port, wherein the second non-return valve is configured to block flow of the hydraulic fluid from the cylinder into the intermediate reservoir. 6. The system of claim 3, wherein the hydraulic pump comprises: a first branch line coupled to the internal discharge line;a second branch line coupled to the internal discharge line;an the internal safety valve, wherein an inlet of the internal safety valve is coupled to the second branch line, and an outlet of the internal safety valve is coupled to a feedback line coupled to the intermediate reservoir; andan internal pressure switch coupled to the first branch line, wherein the internal pressure switch is configured to output a signal to move the internal safety valve from a closed position to an open position when a pressure of the first branch line exceeds a predetermined value, and the internal safety valve in the open position is configured to transfer the hydraulic fluid from the second branch line to the feedback line. 7. The system of claim 6, wherein the first and second servomotors are configured to receive the signal from the internal pressure switch and open the internal safety valve when the pressure of the first branch line exceeds the predetermined value. 8. The system of claim 1, comprising a quick-release coupling configured to couple the hydraulic inlet to a hydraulic fluid supply pipe and the hydraulic outlet to a hydraulic fluid discharge pipe, wherein the quick-release coupling is configured to convey only the hydraulic fluid. 9. The system of claim 1, comprising: an accumulator disposed between the hydraulic pump and the hydraulically actuated safety valve, wherein the accumulator is configured to store a portion of the hydraulic fluid, and the accumulator is physically separate from the hydraulic pump and the hydraulically actuated safety valve. 10. The system of claim 3, wherein the electrical drive comprises a spindle drive, a reduction gear, a spur gear, at least one drive shaft, at least one electric motor configured to rotate the at least one drive shaft, a spindle nut, and a threaded spindle; wherein the spindle nut is threadingly engaged with the threaded spindle and is movably connected to the reduction gear, and the spindle nut is rotatable and axially immovable;wherein the threaded spindle has an actuating end releasably connected to the piston, and the threaded spindle is axially movable;wherein the reduction gear comprises a flexible, cup-shaped toothed sleeve coupled to the spindle nut; andwherein the spur gear comprises a first helical spur wheel rotationally rigidly connected to a wave generator, and a second helical spur wheel rotationally rigidly arranged on the at least one drive shaft. 11. A system, comprising: a hydraulic pump configured to actuate a hydraulically actuated safety valve of a hydrocarbon production system, wherein the hydraulic pump comprises a hydraulic inlet and a hydraulic outlet, the hydraulic pump is configured to pump a hydraulic fluid from the hydraulic inlet to the hydraulically actuated safety valve coupled to the hydraulic outlet, the hydraulic pump is configured to be disposed external to the hydraulically actuated safety valve, and the hydraulic pump is configured to be disposed proximate to the hydraulically operated safety valve; anda first servomotor and a second servomotor, wherein the first and second servomotors are arranged redundantly with respect to one another, and the first and second servomotors are configured to operate an internal safety valve of the hydraulic pump. 12. The system of claim 11, wherein the hydraulic pump is configured to be a subsea device. 13. The system of claim 11, wherein the hydraulic pump comprises: a piston-cylinder unit having a piston disposed within a cylinder, the cylinder comprising:a first port coupled to an internal discharge line disposed in an interior of the hydraulic pump and coupled to the hydraulic outlet; anda second port coupled to an intermediate reservoir disposed in the interior of the hydraulic pump, wherein the intermediate reservoir is configured to store a portion of the hydraulic fluid; andan electrical drive movably coupled to the piston, wherein the electrical drive is configured to alternately move the piston in opposite directions between a first position and a second position within the cylinder. 14. The system of claim 13, wherein the piston is configured to move toward the first position to drive the hydraulic fluid from the cylinder out through the hydraulic outlet, and the piston is configured to move toward the second position to draw the hydraulic fluid from the intermediate reservoir into the cylinder. 15. The system of claim 14, wherein the hydraulic pump comprises: a first non-return valve coupled to the first port, wherein the first non-return valve is configured to block flow of the hydraulic fluid from the hydraulic outlet into the cylinder; anda second non-return valve coupled to the second port, wherein the second non-return valve is configured to block flow of the hydraulic fluid from the cylinder into the intermediate reservoir. 16. The system of claim 13, wherein the hydraulic pump comprises: a first branch line coupled to the internal discharge line;a second branch line coupled to the internal discharge line;an the internal safety valve, wherein an inlet of the internal safety valve is coupled to the second branch line, and an outlet of the internal safety valve is coupled to a feedback line coupled to the intermediate reservoir; andan internal pressure switch coupled to the first branch line, wherein the internal pressure switch is configured to output a signal to move the internal safety valve from a closed position to an open position when a pressure of the first branch line exceeds a predetermined value, and the internal safety valve in the open position is configured to transfer the hydraulic fluid from the second branch line to the feedback line. 17. A method, comprising: pumping a hydraulic fluid from a hydraulic outlet of a hydraulic pump to a hydraulically actuated safety valve of a hydrocarbon production system, wherein the hydraulic pump comprises a hydraulic inlet and the hydraulic outlet, and the hydraulic pump is configured to pump a hydraulic fluid from the hydraulic inlet to the hydraulic outlet;actuating the hydraulically actuated safety valve using the hydraulic fluid pumped from the hydraulic pump, wherein the hydraulically actuated safety valve and the hydraulic pump are configured to be physically separate from one another, and the hydraulically actuated safety valve is configured to be proximate to the hydraulic pump; andoperating an internal safety valve of the hydraulic pump with a redundant set of a first servomotor and a second servomotor. 18. The method of claim 17, comprising sensing an internal pressure of the hydraulic fluid inside the hydraulic pump using an internal pressure switch, and opening the internal safety valve inside the hydraulic pump to transfer at least a portion of the hydraulic fluid out of the hydraulic pump when the internal pressure exceeds a predetermined value. 19. The method of claim 17, comprising coupling the hydraulic pump to a hydraulic pipe using a quick-release coupling device, wherein the quick-release coupling device is configured to convey only the hydraulic fluid. 20. The method of claim 17, comprising storing at least a portion of the hydraulic fluid in an accumulator, wherein the accumulator is disposed between the hydraulic pump and the hydraulically actuated safety valve, and the accumulator is physically separate from the hydraulic pump and the hydraulically actuated safety valve. 21. The system of claim 1, wherein the hydraulic pump comprises the internal safety valve. 22. The system of claim 1, wherein the first and second servomotors are configured to receive a signal from an internal pressure switch and open the internal safety valve when a pressure exceeds a predetermined value. 23. A system, comprising: a hydrocarbon production safety valve system, comprising: a hydraulic pump comprising a hydraulic inlet and a hydraulic outlet, wherein the hydraulic pump is configured to pump a hydraulic fluid from the hydraulic inlet to the hydraulic outlet;a hydraulically actuated safety valve coupled to the hydraulic outlet, wherein the hydraulically actuated safety valve receives the hydraulic fluid from the hydraulic outlet, the hydraulically actuated safety valve and the hydraulic pump are physically separate from one another, and the hydraulically actuated safety valve is proximate to the hydraulic pump; andan electrical drive coupled to the hydraulic pump, wherein the electrical drive comprises a spindle nut, a spur gear, and a wave generator coupled to the spur gear. 24. The system of claim 23, wherein the electrical drive comprises a spindle drive, a reduction gear, at least one drive shaft, at least one electric motor configured to rotate the at least one drive shaft, and a threaded spindle. 25. The system of claim 24, wherein the spindle nut is threadingly engaged with the threaded spindle and is movably connected to the reduction gear, and the spindle nut is rotatable and axially immovable. 26. The system of claim 24, wherein the threaded spindle has an actuating end releasably connected to a piston of the hydraulic pump, and the threaded spindle is axially movable. 27. The system of claim 24, wherein the reduction gear comprises a flexible, cup-shaped toothed sleeve coupled to the spindle nut. 28. The system of claim 24, wherein the spur gear comprises a first helical spur wheel rotationally rigidly connected to the wave generator, and a second helical spur wheel rotationally rigidly arranged on the at least one drive shaft.
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