[특허]Valve assembly

Cameron International Coporation

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특허 상세정보

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내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Valve assembly

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F16K-047/08 E21B-034/02 E21B-034/04 F16K-003/24 F16K-017/168 F16K-005/04 F16K-001/14 F16K-001/22 F16K-047/04
출원번호	US-0971996 (2015-12-16)
등록번호	US-10260654 (2019-04-16)
우선권정보	GB-1423201.1 (2014-12-24)
발명자 / 주소	Hopper, Hans Paul
출원인 / 주소	Cameron International Coporation
대리인 / 주소	Fletcher Yoder, P.C.
인용정보	피인용 횟수 : 0 인용 특허 : 24

초록

A valve assembly that includes a main valve having a valve member moveable between a closed position and an open position. The main valve has an upstream side and a downstream side. The valve assembly includes a pressure equalizing assembly for equalizing the fluid pressure across the main valve. The pressure equalizing assembly includes a line extending from the upstream side of the main valve to the downstream side of the main valve and a pressure equalizing valve assembly.

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1. A valve assembly comprising: a main valve having a valve member moveable between a closed position and an open position, in use the main valve having an upstream side and a downstream side;a pressure equalizing assembly for equalizing the fluid pressure across the main valve, the pressure equalizing assembly comprising a line extending from the upstream side of the main valve to the downstream side of the main valve and a pressure equalizing valve assembly; wherein the pressure equalizing valve assembly comprises: a valve housing;a first port for fluid to enter or leave the valve housing;a second port for fluid to leave or enter the valve housing;a flow control assembly disposed within the valve housing between the first and second ports, the flow control assembly comprising: a cage defining apertures from an outermost cylindrical surface to an innermost cylindrical surface, wherein the apertures extend through the cage at an angle from the outermost cylindrical surface to the innermost cylindrical surface, the apertures are configured to provide passage for fluid passing between the first port and the second port; anda closure assembly configured to open and close the apertures, wherein the closure assembly comprises: a first closure member disposed within the cage; anda second closure member disposed outside the cage, wherein the first and second closure members are configured to move with respect to the cage between a first closed position that closes the apertures in the flow control assembly, and a second open position, in which the apertures in the flow control assembly are open, and wherein the fluid flowing through the pressure equalizing assembly flows unobstructed between the first port and the cage and between the second port and the cage in the second open position. 2. The valve assembly according to claim 1, wherein the main valve is a ball valve, a butterfly valve or a gate valve. 3. The valve assembly according to claim 1, wherein the line extends between the upstream and downstream sides exterior to the main valve. 4. The valve assembly according to claim 1, wherein the pressure equalizing valve assembly is arranged whereby all the fluid entering the valve housing through either the first port or second port flows through the flow control assembly and leaves the valve housing through the corresponding first or second port. 5. The valve assembly according to claim 1, wherein the first port is in fluid flow connection with the outside of the cage, such that fluid entering the valve housing through the first port is provided to an exterior of the cage and flows through the cage to an interior thereof. 6. The valve assembly according to claim 5, wherein the second port is in fluid flow connection with the interior of the cage, such that fluid entering the valve housing through the second port is provided to the interior of the cage and flows through the cage to an outside of the cage. 7. The valve assembly according to claim 1, wherein the valve housing comprises a cavity therein connected to the first port, the flow control assembly being disposed within the cavity. 8. The valve assembly according to claim 7, wherein the flow control assembly is arranged centrally within the cavity, such that the cavity extends around the flow control assembly. 9. The valve assembly according to claim 7, wherein the first port is arranged in the valve housing to extend tangentially to a wall of the cavity. 10. The valve assembly according to claim 9, wherein the first port forms an opening in the wall that defines the cavity to direct fluid into an involute channel or groove extending around the wall of the cavity. 11. The valve assembly according to claim 1, wherein the cage is a generally cylindrical tube. 12. The valve assembly according to claim 11, wherein the apertures are arranged in the flow control assembly in a plurality of rows, each row containing one or more apertures, with adjacent rows being separated by a land or region having no apertures therethrough. 13. The valve assembly according to claim 12, wherein centers of the apertures in adjacent rows of the flow control assembly are offset from each other circumferentially around an exterior surface of the flow control assembly. 14. The valve assembly according to claim 13, wherein the apertures are arranged such that adjacent apertures in adjacent rows extend in a helical pattern along and around the flow control assembly. 15. The valve assembly according to claim 12, wherein the apertures extend inwards, in a plane perpendicular to a longitudinal axis of the flow control assembly at an angle to the radial direction. 16. The valve assembly according to claim 15, wherein the apertures extend through the flow control assembly and open tangentially to an inner surface of the flow control assembly. 17. The valve assembly according to claim 12, wherein the apertures extend through the flow control assembly at an angle to a plane perpendicular to a longitudinal axis of the flow control assembly and at an angle to the radial direction. 18. The valve assembly according to claim 17, wherein the apertures extend at an angle to the plane perpendicular to the longitudinal axis in either an upstream direction or downstream direction of fluid within the flow control assembly. 19. The valve assembly according to claim 1, wherein the first and second closure members are moveable together. 20. The valve assembly according to claim 19, wherein the first and second closure members are sized and arranged differently with respect to one another and the cage, such that in a given position of the closure assembly, the first and second closure members are obscuring and closing a different number of apertures. 21. A valve assembly, comprising: a pressure equalizing valve assembly configured to equalize fluid pressure across a main valve, wherein the pressure equalizing valve assembly comprises: a valve housing comprising a wall that defines a cavity;a first port, wherein the first port fluidly communicates with the cavity and extends tangentially to the wall of the cavity;a second port in fluid communication with the cavity;a flow control assembly disposed within the valve housing between the first and second ports, wherein fluid entering and exiting the valve housing flows through the flow control assembly, and the flow control assembly comprises: a cage defining apertures from an outermost cylindrical surface to an innermost cylindrical surface of the cage, wherein the apertures extend through the cage at an angle from the outermost cylindrical surface to the innermost cylindrical surface to enable the fluid to pass through the flow control assembly; anda closure assembly configured to move with respect to the cage between a first closed position and a second open position to open and close the apertures in the flow control assembly, wherein the fluid flowing through the closure assembly flows unobstructed between the first port and the cage and between the second port and the cage in the second open position. 22. The valve assembly of claim 21, comprising a seating ring that threadingly couples to the valve housing. 23. A valve assembly, comprising: a pressure equalizing valve assembly configured to equalize fluid pressure across a main valve, wherein the pressure equalizing valve assembly comprises: a valve housing comprising a wall that defines a cavity;a first port in fluid communication with the cavity;a second port in fluid communication with the cavity;a flow control assembly disposed within the valve housing between the first and second ports, wherein fluid entering and exiting the valve housing flows through the flow control assembly, and the flow control assembly comprises: a cage defining a plurality of apertures that enable the fluid to pass through the flow control assembly; anda closure assembly configured to open and close the apertures, wherein the closure assembly comprises: a sleeve configured to surround the cage, wherein the sleeve is configured to move with respect to the cage between a first closed position that closes the apertures in the cage, and a second open position in which the apertures in the cage are open, wherein the sleeve comprises a first end with a first angled surface defining a first angle with respect to a longitudinal axis of the cage, the first angled surface is configured to form a sealing interface with a second angled surface in the valve housing, the second angled surface defining a second angle with respect to the longitudinal axis, and wherein the first angle is different than the second angle. 24. The valve assembly of claim 23, wherein the sleeve comprises a first surface portion and a second surface portion that form a ridge, and wherein the ridge is configured to form a seal with a seat ring.

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Valve assembly

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Valve assembly

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이 특허에 인용된 특허 (24)

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