IPC분류정보
국가/구분 |
United States(US) Patent
공개
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0583333
(2010-03-08)
|
공개번호 |
US-0068982
(2013-03-21)
|
국제출원번호 |
PCT/NL2010/050112
(2010-03-08)
|
§371/§102 date |
20121002
(20121002)
|
발명자
/ 주소 |
- Alink, Fabian Wijnand
- Nootebos, Patrick Anthonius Hendrikus Maria
|
출원인 / 주소 |
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
0 |
초록
▼
A ball valve operative in a cryogenic temperature range, includes a housing having a fluid passage therethrough, a ball rotatably positioned in the fluid passage and including a fluid passage therethough, the fluid passages of the housing and the ball allowing fluid through the ball valve when the b
A ball valve operative in a cryogenic temperature range, includes a housing having a fluid passage therethrough, a ball rotatably positioned in the fluid passage and including a fluid passage therethough, the fluid passages of the housing and the ball allowing fluid through the ball valve when the ball is in an open position and block the fluid when the ball is rotated into a closed position. The housing includes at least two sealing rings disposed therein, sealingly contacting the ball and positioned for rotatably holding the ball between the two sealing rings which include at least a surface layer of thermoplastic material contacting the ball surface and having an annular, circumferential groove in a contacting surface where the rings sealingly engage the ball and an annular recess in the sealing ring opposite to the circumferential groove for providing a spring lip for biasing the sealing ring against the ball.
대표청구항
▼
1-20. (canceled) 21. A ball valve operative in a cryogenic temperature range, said ball valve comprising a housing comprising a fluid passage therethrough, a ball rotatably positioned in said housing in said fluid passage and comprising a fluid passage therethough, said fluid passage of said housing
1-20. (canceled) 21. A ball valve operative in a cryogenic temperature range, said ball valve comprising a housing comprising a fluid passage therethrough, a ball rotatably positioned in said housing in said fluid passage and comprising a fluid passage therethough, said fluid passage of said housing and said fluid passage of said ball provided to allow fluid through said ball valve when said ball is in an open position and to block said fluid when said ball is rotated from said open position into a closed position, wherein said housing comprising at least two sealing rings disposed in said housing, and sealingly contacting said ball and positioned for rotatably holding said ball between said at least two sealing rings, said sealing rings comprising at least a surface layer of thermoplastic material contacting said ball surface comprises an annular, circumferential groove in a contacting surface where said sealing rings sealingly engage said ball and an annular recess in said sealing ring opposite to said circumferential groove for providing a spring lip for biasing said sealing ring against said ball. 22. The ball valve of claim 21, wherein said housing comprises at least two annular recesses adjacent to said ball and each holding a sealing ring disposed with its sealing lip in said annular recess to sealingly press said contacting surface against said ball. 23. The ball valve of claim 21, wherein said thermoplastic material contacting said ball surface has a young modulus between 2500 and 10000 MPa at room temperature and an elongation of at least 2% at a temperature below 80K. 24. The ball valve of claim 21, wherein said ball valve has an asymmetric mass distribution due to its fluid passage. 25. The ball valve of claim 21, wherein said passage through said ball is not a straight channel through said ball. 26. The ball valve of claim 21, wherein said passage through said ball comprises at least one bend. 27. The ball valve of claim 21, wherein said housing comprises at least two modular housing parts. 28. The ball valve of claim 27, wherein a first modular housing part comprises at least one fluid passage end dimensioned for housing the ball and having two opposite coupling ends, and a second modular housing part comprising a fluid passage, an annular recess for holding one sealing ring at one end of the fluid passage, and a coupling end for coupling to one coupling end of said first modular housing part such that in a coupled position said sealing ring presses its contacting surface against the ball. 29. The ball valve of claim 21, wherein said fluid passage of said ball comprises a bend and said housing comprises at least three fluid passage ends connecting to said ball and wherein said fluid passage of said ball and said fluid passage ends of said housing arranged with respect to said ball and said fluid passage of said ball to allow interconnection of sets of two fluid passage ends. 30. The ball valve of claim 21, wherein said sealing ring is substantially made from said polymer material. 31. The ball valve of claim 21, wherein said sealing ring comprises at least a core of said polymer material. 32. The ball valve of claim 21, wherein said sealing ring is substantially from said polymer material and comprising spring element in said annular recess for biasing said lip in outward direction. 33. The ball valve of claim 21, wherein said sealing ring is made from PEEK or another polymer material having comparable properties at a cryogenic temperature. 34. A valve assembly comprising at least three valves according to claim 21, wherein at least one ball of said valves is a three-way ball valve in fluid connection between two of said ball valves configured as 2-way ball valves. 35. A ball valve operative in a cryogenic temperature range, comprising a ball having a channel comprising at least one bend and outlet ends of said fluid channel of said ball not in line, said ball valve comprising a sealing ring comprising an annular, circumferential groove in a contacting surface where said sealing rings sealingly engage said ball. 36. Kit-of-parts for providing a ball valve according to claim 21, said kit-of-parts comprising at least one ball, at least two sealing rings, and a set of modular housing parts comprising a first modular housing part, and at least two second modular housing parts, said first modular housing part comprises at least one fluid passage sized for holding said ball and has two opposite coupling ends, and said second modular housing parts each comprising a fluid passage, an annular recess for holding one sealing ring, and a coupling end for coupling to one coupling end of said first modular housing part such that in a coupled position said sealing rings sealingly hold said ball in the fluid passage of said first modular housing part. 37. A sealing ring for a ball valve, in an embodiment according to claim 21, wherein said sealing ring is substantially made from a thermoplastic material having a young modulus between 2500 and 10000 MPa at room temperature and an elongation of at least 2% at a temperature below 80K. 38. The sealing ring of claim 37 wherein said thermoplastic material is PEEK 39. The sealing ring of claim 37, further comprises an annular, circumferential groove in a contacting surface where said sealing ring in use sealingly engages a ball of a ball valve. 40. The sealing ring of claim 37, having a contacting surface and further comprising an annular recess in said sealing ring opposite to said contacting surface for providing a spring lip for in use in a ball valve biasing said sealing ring against a ball.
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