[특허]Diaphragm valve with welded diaphragm seat carrier

Swagelok Company

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특허 상세정보

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Diaphragm valve with welded diaphragm seat carrier

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F16K-007/14
출원번호	US-0169298 (2014-01-31)
등록번호	US-9863542 (2018-01-09)
발명자 / 주소	Glime, William H.
출원인 / 주소	Swagelok Company
대리인 / 주소	Calfee, Halter & Griswold LLP
인용정보	피인용 횟수 : 0 인용 특허 : 37

초록
▼

A diaphragm valve with an assembly or cartridge that facilitates replacement of the diaphragm, the valve seat or both. The assembly may be a valve assembly having a diaphragm, a seat carrier and a valve seat that are combined into a discrete subassembly or cartridge for a diaphragm valve. The assembly as a discrete cartridge can be easily removed and replaced in order to change out the diaphragm or the valve seat or both. In one embodiment, the diaphragm has a perimeter that is welded to one side of the seat carrier. Flow capacity is favored by providing a gap between a seat carrier and a flow port of the valve body where the gap in part defines a flow area that is the same or greater than the flow area of the flow port. Methods for installing and replacing a valve assembly into a valve body are also disclosed.

대표
청구항
▼

1. A diaphragm valve, comprising: a valve body comprising a valve cavity, a first port and a second port, said first port and said second port being open to said valve cavity,a valve assembly disposed to seal said valve cavity, said valve assembly comprising a valve seat, a seat carrier and a diaphragm, said valve seat being retained with said seat carrier and said diaphragm being attached to a first side of said seat carrier, said valve seat being disposed to surround said first port and defining a lowermost seal surface of the valve assembly,said diaphragm being attached to said seat carrier by a weld about a periphery of said diaphragm,a threaded member assembled with the valve body and including an annular bead that directly contacts a non-wetted surface of the diaphragm entirely inboard of said weld to apply a compressive load to said diaphragm entirely inboard of said weld to isolate said weld with said lowermost seal surface of the valve assembly being held in sealing engagement with said valve body around said first port. 2. The diaphragm valve of claim 1 wherein said diaphragm comprises a domed circular disk. 3. The diaphragm valve of claim 1 wherein said seat carrier comprises an annular body having an outer rim and a web that extends radially inward from said outer rim to a central opening, said central opening being aligned with said first port when said valve assembly is installed in said valve body. 4. The diaphragm valve of claim 3 wherein said web comprises a plurality of flow passages separated by lands about said central opening. 5. The diaphragm valve of claim 3 wherein said valve seat is retained with said seat carrier by an interference fit between a circumferential wall of said valve seat and a wall of said web that defines said central opening. 6. The diaphragm valve of claim 3 wherein said web is flexible so that said web biases said lowermost seal surface of the valve assembly that faces away from said diaphragm into contact with a seal surface of said valve body that surrounds said first port. 7. The diaphragm valve of claim 4 wherein each said land between adjacent pairs of said flow passages has a surface area that is less than a cross-sectional area of said second port so as to reduce obstruction of flow when said land overlays said second port. 8. The diaphragm valve of claim 1 wherein said diaphragm comprises a domed circular disk that is attached to said seat carrier by said weld about a periphery of said domed circular disk, said diaphragm being compressed between said annular bead of said threaded member and a surface on said first side of said seat carrier. 9. The diaphragm valve of claim 1 wherein said second port is provided in a surface of said valve body that defines said valve cavity, said seat carrier comprises an annular body having an outer rim and a web that extends radially inward from said outer rim to a central opening, said web being disposed to provide a gap between a lower surface of said web and said surface of said valve body. 10. The diaphragm valve of claim 1 wherein said diaphragm comprises stainless steel, said seat carrier comprises stainless steel, and said valve seat comprises a polymer or plastic. 11. The diaphragm valve of claim 1 wherein said seat carrier has a spring rate of less than 100,000 lbs/in. 12. The diaphragm valve of claim 11 wherein said seat carrier has a spring rate of less than 80,000 lbs/in. 13. The diaphragm valve of claim 12 wherein said seat carrier has a spring rate of approximately 20,000 lbs/in. 14. The diaphragm valve of claim 9 wherein said gap presents a flow area that is approximately the same or greater than the flow area of said second port. 15. The diaphragm valve of claim 14 wherein said web is generally planar and has a spring rate of less than 100,000 lbs/in. 16. The diaphragm valve of claim 1 wherein said compressive load isolates said weld from stress due to flexure of said diaphragm. 17. The diaphragm valve of claim 1 wherein said valve seat comprises a flow passage in fluid communication with said first port. 18. The diaphragm valve of claim 6, wherein the web applies a load between approximately 50 pounds and 100 pounds between the upper seal surface and the seal surface. 19. The diaphragm valve of claim 1, wherein the threaded member comprises an interior threaded portion. 20. The diaphragm valve of claim 19, further comprising a valve actuator threadably assembled with the interior threaded portion of the threaded member. 21. The diaphragm valve of claim 1 wherein the valve assembly further includes an upper seal surface for sealing against said diaphragm. 22. The diaphragm valve of claim 21, wherein the upper seal surface is defined by an upper surface of the valve seat. 23. The diaphragm valve of claim 21 further comprising a valve actuator that is assembled with the valve body and operable to move a surface of said diaphragm into and out of contact with said upper seal surface, wherein the valve actuator is separate from the threaded member, and wherein the valve actuator is removable from the valve body without removing the threaded member from the valve body. 24. The diaphragm valve of claim 23, wherein the valve actuator is secured to the valve body by the threaded member. 25. The diaphragm valve of claim 21 in combination with a valve actuator that is operable to move a surface of said diaphragm into and out of contact with said upper seal surface. 26. The diaphragm valve of claim 21 wherein said diaphragm is operable to open and close flow between said first port and said second port, said diaphragm being moveable into contact with said upper seal surface to close flow between said first port and said second port.

이 특허에 인용된 특허 (37)

이 특허와 함께 이용한 콘텐츠

[특허] Diaphragm valve with metal seat 함께 이용한 콘텐츠

IPC 상위 출원인

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상세정보
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구성항목	관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
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특허 상세정보

Diaphragm valve with welded diaphragm seat carrier

초록
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청구항
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이 특허에 인용된 특허 (37)

이 특허와 함께 이용한 콘텐츠

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특허 상세정보

Diaphragm valve with welded diaphragm seat carrier

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이 특허에 인용된 특허 (37)

이 특허와 함께 이용한 콘텐츠

IPC 상위 출원인

과제정보

상세정보조회

원문조회

IPC 상세정보(version : 201201)

연구과제 성과물(0)

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처리중입니다.

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