Advanced fluidics gate valve with active flow control for subsea applications
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F16K-003/00
F16K-003/26
출원번호
US-0845336
(2010-07-28)
등록번호
US-8567759
(2013-10-29)
발명자
/ 주소
Gharaibah, Emad Ahmad Obaid
Kristoffersen, Astrid
출원인 / 주소
Vetco Gray Inc.
대리인 / 주소
Bracewell & Giuliani LLP
인용정보
피인용 횟수 :
0인용 특허 :
5
초록▼
A valve assembly for use in a wellhead assembly that includes a valve body, a cavity formed in the valve body, and a flow passage through the valve body that intersects the cavity. Also included is a gate slidable in the cavity between an open position and a closed position. A bore is formed through
A valve assembly for use in a wellhead assembly that includes a valve body, a cavity formed in the valve body, and a flow passage through the valve body that intersects the cavity. Also included is a gate slidable in the cavity between an open position and a closed position. A bore is formed through the gate. A fluidic passage is also formed through the gates that provides fluid communication between the bore and an upstream side of the valve member. The fluidic passage is formed so that when the gate is being moved into the closed position, fluid upstream of the gate enters the fluidic passage and exits into the bore to assist closing the valve.
대표청구항▼
1. A valve assembly, comprising: a housing;a cavity in the housing;a flow passage formed through the housing and the cavity;a gate slidably disposed in the cavity that is selectively moveable between an open position and a closed position, and having an upstream side and a downstream side;a bore for
1. A valve assembly, comprising: a housing;a cavity in the housing;a flow passage formed through the housing and the cavity;a gate slidably disposed in the cavity that is selectively moveable between an open position and a closed position, and having an upstream side and a downstream side;a bore formed through the gate that registers with the flow passage when the gate is in the open position; anda fluidic passage in the gate and having an entrance spaced from the bore so that at least a portion of an exterior surface of the upstream side of the gate is between the entrance and the bore, and an exit intersecting the bore, so that when fluid flows through the valve assembly and the gate is moving into the closed position, a portion of the fluid passes into the fluidic passage at the upstream side and exits the fluidic passage into the bore. 2. The valve assembly of claim 1, wherein the bore is offset from the mid portion of the gate and the fluidic passage intersects the bore along a side proximate the mid portion. 3. The valve assembly of claim 1, wherein an entrance to the bore and entrance to the fluidic passage are coplanar, and wherein an interface between the fluidic passage and the bore is configured so that fluid entering the bore from the interface is directed oblique to an axis of the flow passage. 4. The valve assembly of claim 1, wherein an interface between the fluidic passage and the bore is configured so that fluid entering the bore from the interface is directed proximate a gap between the flow passage and the bore when the gate is almost closed where the flow passage registers with the bore on a downstream side of the valve body. 5. The valve assembly of claim 1, wherein an interface between the fluidic passage and the bore is configured so that fluid entering the bore from the interface is directed towards an opposite side of the bore from the interface. 6. The valve assembly of claim 1, wherein an interface between the fluidic passage and the bore is closer to a downstream side of the gate than an upstream side. 7. The valve assembly of claim 1, wherein the fluidic passage has a diameter less than the diameter of the bore. 8. A method of controlling flow through a wellhead assembly comprising: (a) directing the flow from an upstream flow line to a valve assembly that comprises a valve body, a cavity in the valve body, a flow passage through the body that intersects the cavity, a gate selectively moveable in the cavity, and a bore in the gate;(b) moving the gate away from an open position with the bore registered with the flow passage towards a closed position with a solid portion of the gate blocking flow through the flow passage so that a main body of the flow passes through an opening defined where the bore registers with the flow passage; and(c) lowering a velocity of fluid flowing through the bore by diverting a portion of the flow from the upstream flow line through a fluidics channel extending from an exterior surface of an upstream side of the gate into the bore and that is separated from the main body of the flow. 9. The method of claim 8, wherein a pressure drop of the flow through the valve assembly is increased during step (b), the method further comprising reducing the pressure drop by mixing the diverted flow of step (c) with the flow in the valve passage. 10. The method of claim 9, wherein the step of mixing comprises directing the diverted flow from the fluidics passage toward a gap between the bore and the flow passage. 11. The method of claim 9, wherein the step of mixing comprises directing the diverted flow from the fluidics passage to an opposite side of the bore. 12. The method of claim 8, further comprising moving the valve completely to the closed position, which stops flow through the fluidic passage. 13. A valve assembly comprising: an upstream end connected to an upstream flow line;a downstream end connected to a downstream flow line;a valve body;a cavity in the valve body;a flow passage through the valve body and the cavity, having an upstream side in fluid communication with the upstream flow line and having a downstream side in fluid communication with the downstream flow line;a gate comprising a substantially solid portion and a portion with a bore formed therethrough, so that when the gate is moved within the cavity, the bore at least partially registers with the flow passage to define a flow path through the valve body that varies in cross sectional area with selective movement of the gate, anda fluidic passage formed through the gate in a direction oblique with the bore and between a side of the gate facing the upstream flow line and a side of the bore proximate the downstream flow line, and having an entrance with an outer periphery of an upstream side and set back from an entrance to the bore. 14. The valve assembly of claim 13, wherein the fluidic passage has an outlet formed along a path directed towards a space where the flow path transitions into the downstream flow line when the gate is almost closed. 15. The valve assembly of claim 13, wherein the fluidic passage has an outlet formed along a path directed towards a side of the bore distal from where the fluidic channel intersects the bore.
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이 특허에 인용된 특허 (5)
Jones Taylor L., Gate valve for subsea completion system.
Malyshev Vladimir N. (ulitsa 25 let Oktyabrya ; 4 ; kv. 22 Novokuznetsk Kemerovskoi oblasti SUX) Reinik Oleg G. (ulitsa Ordzhonikidze ; 50 ; kv. 57 Novokuznetsk Kemerovskoi oblasti SUX) Jurin Petr I., Gate valve to shut off flow of liquid in pipelines.
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