[특허]Gate valve with replaceable inserts

Stinger Wellhead Protection, Inc.

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특허 상세정보

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Gate valve with replaceable inserts

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F16K-003/30 F16K-003/00
미국특허분류(USC)	137/242; 137/375; 251/327; 251/329; 251/361; 251/363
출원번호	US-0979427 (2004-11-02)
등록번호	US-7481239 (2009-01-27)
발명자 / 주소	McGuire,Bob Dallas,L. Murray
출원인 / 주소	Stinger Wellhead Protection, Inc.
대리인 / 주소	Nelson Mullins Riley & Scarborough, LLP
인용정보	피인용 횟수 : 8 인용 특허 : 11

초록
▼

A gate valve includes a valve body having a cylindrical passage defining a flow path through the valve, a gate for controlling fluid flow through the valve and a replaceable wear-resistant flow-path liner for in the flow path. The flow-path liner includes a plurality of replaceable wear-resistant inserts, including wear sleeves lining ports of the valve body, valve seats and a gate insert for a flow path bore through the gate. Each replaceable valve seat has a wiper ring for cleaning the gate when it opens and closes. By regularly inspecting and replacin...

대표
청구항
▼

We claim: 1. A gate valve comprising: a valve body having a generally cylindrical passage defining a flow path bore through the valve; a gate for controlling fluid flow through the valve, the gate being moveable in a plane perpendicular to the flow path bore between an open position, in which fluid flows through the valve and the gate, and a closed position, in which fluid flow is obstructed; first and second valve seats received in the flow path bore adjacent the gate, the first and second valve seats having respective inner ends that respectively abut opposite sides of the gate and outer ends received in the flow path bore; first and second wear sleeves that line respective first and second ports of the flow path bore, the first and second wear sleeves having respective inner ends received in respective said outer ends of respective said first and second valve seats; and a replaceable gate insert for protecting the flow path through the gate, the first and second valve seats, first and second wear sleeves and replaceable gate insert providing a replaceable steel flow-path liner received within the valve body for protectively lining an entire length of the flow path bore through the valve and the gate. 2. The gate valve as claimed in claim 1 wherein the replaceable gate insert is received in the flow path bore and is retained in the flow path bore by a mechanical fastener received in a bore that is perpendicular to, and communicates with, the flow path bore. 3. The gate valve as claimed in claim 1 wherein each valve seat comprises an annular groove in the inner end for receiving a gate wiper ring. 4. The gate valve as claimed in claim 1 wherein each valve seat comprises: an annular shoulder at the inner end for retaining a wiper ring; and a retainer ring surrounding the wiper ring. 5. A gate valve comprising: a valve body having a generally cylindrical passage defining a flow path through the gate valve; a gate for controlling fluid flow through the gate valve, the gate being translatable in a plane perpendicular to the flow path between an open position, in which fluid flows through the gate valve and the gate, and a closed position, in which fluid flow is obstructed; respective cylindrical valve seat received in the flow path on respective sides of the gate, each cylindrical valve seat having an inner end that abuts the gate; a wear sleeve received in respective valve body ports of the gate valve, the wear sleeves having respective inner ends received in respective outer ends of the respective cylindrical valve seats; a cylindrical gate insert received in the flow path through the gate; and the cylindrical gate insert, the respective cylindrical valve seats and the respective wear sleeves providing, in combination, a replaceable steel flow-path liner received within the valve body for protectively lining an entire length of the flow path through the valve body and the gate. 6. The gate valve as claimed in claim 5 wherein at least one of the respective wear sleeves comprises a wear sleeve having a length that is longer than the port of the valve body in which the at least one wear sleeve is received, a free end of the at least one wear sleeve being received in a port of another flow control element to which the gate valve is connected, the other flow control element having another wear-resistant flow path liner that cooperates with the free end of the at least one wear sleeve to provide a continuous wear-resistant connection between the gate valve and the other flow control element. 7. The gate valve as claimed in claim 6 wherein a fluid seal is provided between the port of the other flow control element and the at least one wear sleeve by at least one O-ring on the free end of the at least one wear sleeve. 8. The gate valve as claimed in claim 6 wherein a fluid seal is provided between the free end of the at least one wear sleeve and the flow path liner that cooperates with the free end of the at least one wear sleeve by at least one ring gasket. 9. The gate valve as claimed in claim 5 wherein the inner end of each said cylindrical valve seat further comprises an annular groove for receiving a wiper ring. 10. The gate valve as claimed in claim 5 wherein the inner end of each said cylindrical valve seat comprises: an annular shoulder for retaining a wiper ring; and a retainer ring surrounding the wiper ring. 11. The gate valve as claimed in claim 1 further comprising an O-ring that provides a fluid seal between an outer end of respective said valve seat sand the valve body. 12. The gate valve as claimed in claim 1 further comprising an O-ring to provide a fluid seal between an outer end of respective said wear sleeve sand valve body ports. 13. The gate valve as claimed in claim 5 further comprising an O-ring to provide a fluid seal between an outer end of the respective wear sleeves that line the respective valve body ports. 14. The gate valve as claimed in claim 5 further comprising an O-ring to provide a fluid seal between an outer end of respective said valve seats and the valve body. 15. The gate valve as claimed in claim 1 wherein respective said wear sleeves pass substantially through respective said valve seats. 16. The gate valve as claimed in claim 5 wherein respective said wear sleeves pass substantially through respective said cylindrical valve seats. 17. A gate valve comprising: a valve body having opposed valve body ports with a generally cylindrical passage defining a flow path through the respective valve body ports and the valve body; a gate for controlling fluid flow through the flow path, the gate that may be moved in a plane perpendicular to the flow path between an open position in which fluid flows through the flow path and the gate, and a closed position in which fluid flow through the flow path is obstructed; respective cylindrical valve seats received in the flow path on opposed sides of the gate, each cylindrical valve seat having an inner end that abuts a respective side of the gate; a wear sleeve received in the opposed valve body ports, the wear sleeves having respective inner ends received in respective outer ends of the respective cylindrical valve seats; a cylindrical gate insert that protectively lines the flow path through the gate; wherein the cylindrical gate insert, the respective cylindrical valve seats and the respective wear sleeves provide, in combination, a steel flow-path liner received within the valve body and the opposed valve body ports for protectively lining an entire length of the flow path. 18. The gate valve as claimed in claim 17 wherein the inner end of each said cylindrical valve seat further comprises an annular groove for receiving a wiper ring that wipes the gate when the gate is moved by a gate mechanism, thereby cleaning the gate of fluids, proppants or other debris that could otherwise be drawn into and potentially clog the gate mechanism. 19. The gate valve as claimed in claim 17 wherein the inner end of each said cylindrical valve seat comprises: an annular shoulder for retaining a wiper ring wipes the gate when the gate is moved by a gate mechanism, thereby cleaning the gate of fluids, proppants or other debris that could otherwise be drawn into and potentially clog the gate mechanism; and a retainer ring surrounding the wiper ring and retaining the wiper ring in place. 20. The gate valve as claimed in claim 17 further comprising: an O-ring that provides a fluid seal between one of the opposed valve body ports and an outer end of the wear sleeve that lines that valve body port; an O-ring that provides a fluid seal between the other of the opposed valve body ports and an outer end of the wear sleeve that lines that other valve body port; an O-ring that provides a fluid seal between the valve body and an outer end of one of the respective valve seats; and an O-ring that provides a fluid seal between the valve body and an outer end of the other of the respective valve seats.

이 특허에 인용된 특허 (11)

이 특허를 인용한 특허 피인용횟수: 8

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특허 상세정보

Gate valve with replaceable inserts

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이 특허에 인용된 특허 (11)

이 특허를 인용한 특허 피인용횟수: 8

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Gate valve with replaceable inserts

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이 특허에 인용된 특허 (11)

이 특허를 인용한 특허 피인용횟수: 8

IPC 상위 출원인

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상세정보조회

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IPC 상세정보(version : 201201)

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