CN103776591A - Low-temperature valve testing device - Google Patents
Low-temperature valve testing device Download PDFInfo
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- CN103776591A CN103776591A CN201410025585.2A CN201410025585A CN103776591A CN 103776591 A CN103776591 A CN 103776591A CN 201410025585 A CN201410025585 A CN 201410025585A CN 103776591 A CN103776591 A CN 103776591A
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- block
- entrance
- outlet
- trepanning
- cryogenic valve
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Abstract
The invention discloses a low-temperature valve testing device which comprises a first sealing supporting plate, a second sealing supporting plate, a first connecting plate, a second connecting plate, an outlet stopping block component and an inlet stopping block component. When the testing device is used, the first connecting plate and the second connecting plate are mounted on the periphery of the outlet end of a low-temperature valve and the periphery of the inlet end of the low-temperature valve in a sleeved mode and are stopped and supported by the outlet stopping block component and the inlet stopping block component, the first connecting plate and the first sealing supporting plate are fixed through a fastener, and the second connecting plate and the second sealing supporting plate are fixed through a fastener. The testing device solves the problem that according to an existing testing device, leakage easily happens, the torque is reduced by shortening the length of a stud, the sealing performance of the low-temperature valve and the sealing supporting plates is good, and normal operation of a low-temperature valve test is guaranteed.
Description
Technical field
The present invention relates to a kind of test unit of cryogenic valve, this cryogenic valve is applied to liquid oxygen, and liquid argon, in the pipeline of the cryogenic medias such as liquid nitrogen and liquefied natural gas (LNG) (LNG), plays the effect of blocking and connecting to cryogenic media gas.
Background technology
The sealing property of cryogenic valve is one of leading indicator of examination valve mass quality, therefore before dispatching from the factory, needs it to carry out sealing test.The structure for pressure test of tradition cryogenic valve is to import and export and add two flanges at ball valve, on flange, be provided with caulking groove and sealing gasket, the inlet end of cryogenic valve and endpiece are against in caulking groove and contact sealing with sealing gasket, by double-screw bolt, thereby two flanges are connected and make bad student's pressure between the inlet end of flange and cryogenic valve and endpiece, realize sealing; Do so common double-screw bolt longer, packing washer is difficult to even compression, easily produces and reveals.Double-screw bolt length is longer, and the therefore easy moment additional to the generation of cryogenic valve, cause decline serviceable life, and sealing effectiveness guarantees very much.
Summary of the invention
Technical matters to be solved by this invention is: the test unit that a kind of cryogenic valve is provided, this experimental provision solves the problem that current proving installation is easily revealed, reduce moment of torsion by having shortened double-screw bolt length, make cryogenic valve and the good airproof performance that seals back up pad, guaranteed normally carrying out of cryogenic valve test.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of test unit of cryogenic valve, comprise the first sealing back up pad, the second sealing back up pad, also comprise the first web joint and the second web joint, outlet block assembly and entrance block assembly, in the first sealing back up pad, the second sealing back up pad, be provided with tested media through hole, on this tested media through hole, be provided with connector; On the plate face of the first sealing back up pad, be provided with the outlet of cryogenic valve along the entrance caulking groove coordinating, in this outlet caulking groove, be provided with O-ring seal; On the plate face of the second sealing back up pad, be provided with and the entrance caulking groove that opening's edge coordinates that enters of cryogenic valve, in this entrance caulking groove, be provided with O-ring seal; Outlet block assembly comprises at least two outlet blocks, and entrance block assembly comprises at least two entrance blocks, outlet block and entrance block discrete endpiece periphery and the inlet end periphery that is fixedly installed in cryogenic valve respectively; Described the first web joint comprises outlet trepanning and the outlet block trepanning of the endpiece periphery that is set in cryogenic valve, and this outlet block trepanning is corresponding with position and the number homogeneous one of outlet block, and this outlet block trepanning is communicated with outlet trepanning; Described the second web joint comprises entrance trepanning and the entrance block trepanning of the inlet end periphery that is set in cryogenic valve, the position of this entrance block trepanning and entrance block and number homogeneous one is corresponding and be communicated with entrance trepanning, described the first web joint is set in endpiece periphery and the outlet block and the dislocation of outlet block trepanning of cryogenic valve, the second web joint is set in inlet end periphery and entrance block and the dislocation of entrance block trepanning of cryogenic valve, between described the first web joint and the first sealing back up pad, between the second web joint and the second sealing back up pad, fix by securing member.
As the preferred scheme of one, the entrance block number that described entrance block assembly comprises is three, this block circumference uniform distribution.
As the preferred scheme of one, the outlet block number that described outlet block assembly comprises is three, this block circumference uniform distribution.
As the preferred scheme of one, described outlet block and entrance block are block arc and measure-alike.
As the preferred scheme of one, described securing member is bolt fastener.
Adopt after technique scheme, effect of the present invention is: when this experimental provision uses by corresponding block trepanning alignment stops on the first web joint and the second web joint, thereby can be enclosed within endpiece and the inlet end of cryogenic valve, make block and outlet block trepanning and the dislocation of entrance block trepanning at rotation the first web joint and the second web joint, like this, the first web joint and the first sealing back up pad, spacing between the second web joint and the second sealing back up pad is just dwindled, reduce the length of securing member, reduce the moment of torsion between securing member, avoid producing additional moment between the valve body of cryogenic valve, so just can guarantee entering opening's edge and exporting along being sealed and matched closely with corresponding O-ring seal of cryogenic valve, guaranteed normally carrying out of cryogenic valve test, and the size of block size for cryogenic valve is less, does not affect the assembling of cryogenic valve, also just without block is removed.
The entrance block number comprising due to described entrance block assembly is again three, this block circumference uniform distribution.The outlet block number that described outlet block assembly comprises is three, this block circumference uniform distribution.Like this, block is just more balanced to the anchorage force of the first web joint and the generation of the second web joint, guarantees the first web joint and the first sealing back up pad, the depth of parallelism of the second web joint and the second sealing back up pad.
Because described outlet block and entrance block are block arc and measure-alike, therefore, the size of the first web joint and the second web joint can be identical again, thereby convenient installation is also reusable.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the structure cut-open view of the embodiment of the present invention;
Fig. 2 is the side schematic view after suit the first web joint;
In accompanying drawing: 1. the first sealing back up pad 1; 2. outlet block 2; 3. the first web joint 3; 4. the second sealing back up pad 4; 5. entrance block trepanning; 6. the second web joint 6; 7. bolt 7; 8. connector 8; 9. O-ring seal 9; 10. outlet caulking groove 10; 11. cryogenic valves 11; 12. outlet block trepannings 12; 13. entrance caulking grooves 13.
Embodiment
Below by specific embodiment, the present invention is described in further detail.
As shown in Figure 1, 2, a kind of test unit of cryogenic valve 11, comprise the first sealing back up pad 1, the second sealing back up pad 4, also comprise the first web joint 3 and the second web joint 6, outlet block assembly and entrance block cover aperture member, the first sealing back up pad 1, the second sealing back up pad 4 are selected ring flange, on it, be provided with tested media through hole, on this tested media through hole, be provided with connector 8, tested media through hole is communicated with the inner chamber of cryogenic valve 11; On the plate face of the first sealing back up pad 1, be provided with the outlet of cryogenic valve 11 along the entrance caulking groove 13 coordinating, in this outlet caulking groove 10, be provided with O-ring seal 9; On the plate face of the second sealing back up pad 4, be provided with and the entrance caulking groove 13 that opening's edge coordinates that enters of cryogenic valve 11, in this entrance caulking groove 13, be provided with O-ring seal 9; Outlet block assembly comprises at least two outlet blocks 2, and entrance block assembly comprises at least two entrance blocks, and in the present embodiment, the entrance block cover number of perforations that described entrance block cover aperture member comprises is three, this block circumference uniform distribution.Outlet block 2 numbers that described outlet block assembly comprises are three, this block circumference uniform distribution.Described outlet block 2 and entrance block trepanning are block arc and measure-alike.
Principle of work of the present invention is: the endpiece periphery and the inlet end periphery that first outlet block 2, entrance block trepanning are welded on to cryogenic valve 11; Then after the outlet block trepanning 12 of the first web joint 3 being aimed at outlet block 2, the first web joint 3 can be enclosed within the endpiece periphery of cryogenic valve 11; Then rotate the first web joint 3 and make to export block trepanning 12 and misplace with outlet block 2, such the first web joint 3 is just blocked support by outlet block 2; The second web joint 6 is arranged on the inlet end periphery of cryogenic valve 11 in the same way; Then the outlet edge of cryogenic valve 11 and enter opening's edge and embed in outlet caulking groove 10 in back up pad 4 of the first sealing back up pad 1 and the second sealing and entrance caulking groove 13 and coordinate with corresponding O-ring seal 9, then by the first web joint 3 and the first sealing back up pad 1, bolt 7 and fastening nuts between the second web joint 6 and the second sealing back up pad 4, the number of its bolt 7 is preferably four.Like this, between the first web joint 3 and the first sealing back up pad 1, spacing is less, bolt 7 contraction in lengths, and the depth of parallelism is guaranteed, and then can reduce the moment to cryogenic valve 11 valve bodies, guarantees sealing.
Claims (5)
1. the test unit of a cryogenic valve, comprise the first sealing back up pad, the second sealing back up pad, it is characterized in that: also comprise the first web joint and the second web joint, outlet block assembly and entrance block assembly, in the first sealing back up pad, the second sealing back up pad, be provided with tested media through hole, on this tested media through hole, be provided with connector; On the plate face of the first sealing back up pad, be provided with the outlet of cryogenic valve along the entrance caulking groove coordinating, in this outlet caulking groove, be provided with O-ring seal; On the plate face of the second sealing back up pad, be provided with and the entrance caulking groove that opening's edge coordinates that enters of cryogenic valve, in this entrance caulking groove, be provided with O-ring seal; Outlet block assembly comprises at least two outlet blocks, and entrance block assembly comprises at least two entrance blocks, outlet block and entrance block discrete endpiece periphery and the inlet end periphery that is fixedly installed in cryogenic valve respectively; Described the first web joint comprises outlet trepanning and the outlet block trepanning of the endpiece periphery that is set in cryogenic valve, and this outlet block trepanning is corresponding with position and the number homogeneous one of outlet block, and this outlet block trepanning is communicated with outlet trepanning; Described the second web joint comprises entrance trepanning and the entrance block trepanning of the inlet end periphery that is set in cryogenic valve, the position of this entrance block trepanning and entrance block and number homogeneous one is corresponding and be communicated with entrance trepanning, described the first web joint is set in endpiece periphery and the outlet block and the dislocation of outlet block trepanning of cryogenic valve, the second web joint is set in inlet end periphery and entrance block and the dislocation of entrance block trepanning of cryogenic valve, between described the first web joint and the first sealing back up pad, between the second web joint and the second sealing back up pad, fix by securing member.
2. the test unit of a kind of cryogenic valve as claimed in claim 1, is characterized in that: the entrance block number that described entrance block assembly comprises is three, this block circumference uniform distribution.
3. the test unit of a kind of cryogenic valve as claimed in claim 2, is characterized in that: the outlet block number that described outlet block assembly comprises is three, this block circumference uniform distribution.
4. the test unit of a kind of cryogenic valve as claimed in claim 3, is characterized in that: described outlet block and entrance block are block arc and measure-alike.
5. the test unit of a kind of cryogenic valve as claimed in claim 4, is characterized in that: described securing member is bolt fastener.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410025585.2A CN103776591B (en) | 2014-01-21 | 2014-01-21 | The test unit of cryogenic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410025585.2A CN103776591B (en) | 2014-01-21 | 2014-01-21 | The test unit of cryogenic valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103776591A true CN103776591A (en) | 2014-05-07 |
| CN103776591B CN103776591B (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410025585.2A Active CN103776591B (en) | 2014-01-21 | 2014-01-21 | The test unit of cryogenic valve |
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| Country | Link |
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| CN (1) | CN103776591B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568318A (en) * | 2014-12-26 | 2015-04-29 | 圣博莱阀门有限公司 | Low-temperature valve welding end detection device |
| CN109490062A (en) * | 2018-11-05 | 2019-03-19 | 成都乘风流体科技集团有限公司 | A kind of application method of valve weld bond end pressure testing sealing frock |
Citations (6)
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| KR20100024133A (en) * | 2008-08-25 | 2010-03-05 | 현대중공업 주식회사 | Blind flange and apparatus for leakage check of water in submersible vehicle using the same |
| CN202521154U (en) * | 2012-04-09 | 2012-11-07 | 中国十七冶集团有限公司 | Baffle for pipeline water/gas pressure testing |
| CN202547870U (en) * | 2012-04-10 | 2012-11-21 | 江苏金石阀业有限公司 | Valve pressure test clamp |
| CN103090153A (en) * | 2011-10-28 | 2013-05-08 | 张旭久 | Compensative pipeline repair device |
| CN203719831U (en) * | 2014-01-21 | 2014-07-16 | 张家港富瑞特种装备股份有限公司 | Low-temperature valve testing device |
| CN204439334U (en) * | 2015-01-30 | 2015-07-01 | 江苏同天机械有限公司 | A kind of welded type adds long pipe ball valve structure for pressure test |
-
2014
- 2014-01-21 CN CN201410025585.2A patent/CN103776591B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100024133A (en) * | 2008-08-25 | 2010-03-05 | 현대중공업 주식회사 | Blind flange and apparatus for leakage check of water in submersible vehicle using the same |
| CN103090153A (en) * | 2011-10-28 | 2013-05-08 | 张旭久 | Compensative pipeline repair device |
| CN202521154U (en) * | 2012-04-09 | 2012-11-07 | 中国十七冶集团有限公司 | Baffle for pipeline water/gas pressure testing |
| CN202547870U (en) * | 2012-04-10 | 2012-11-21 | 江苏金石阀业有限公司 | Valve pressure test clamp |
| CN203719831U (en) * | 2014-01-21 | 2014-07-16 | 张家港富瑞特种装备股份有限公司 | Low-temperature valve testing device |
| CN204439334U (en) * | 2015-01-30 | 2015-07-01 | 江苏同天机械有限公司 | A kind of welded type adds long pipe ball valve structure for pressure test |
Non-Patent Citations (1)
| Title |
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| 范光荣: "《低温阀门的结构设计及管道连接》", 《深冷技术》, no. 4, 31 August 1981 (1981-08-31) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568318A (en) * | 2014-12-26 | 2015-04-29 | 圣博莱阀门有限公司 | Low-temperature valve welding end detection device |
| CN109490062A (en) * | 2018-11-05 | 2019-03-19 | 成都乘风流体科技集团有限公司 | A kind of application method of valve weld bond end pressure testing sealing frock |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103776591B (en) | 2016-03-02 |
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