CN201228801Y - Manual-pneumatic power integration low-temperature vacuum multilayer thermal insulation stop valve - Google Patents
Manual-pneumatic power integration low-temperature vacuum multilayer thermal insulation stop valve Download PDFInfo
- Publication number
- CN201228801Y CN201228801Y CNU200820105487XU CN200820105487U CN201228801Y CN 201228801 Y CN201228801 Y CN 201228801Y CN U200820105487X U CNU200820105487X U CN U200820105487XU CN 200820105487 U CN200820105487 U CN 200820105487U CN 201228801 Y CN201228801 Y CN 201228801Y
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- valve
- stop valve
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Abstract
The utility model provides a novel low-temperature vacuum multi-layer thermal insulation stop valve, which can be used in a high-temperature system under temperature of liquid oxygen, liquid nitrogen and liquid hydrogen. The stop valve body utilizes a vacuum multi-layer thermal insulation structure, a low-temperature portion utilizes a corrugated pipe as a moving seal element, the stop valve is connected with a pipe by a vacuum flange or a small vacuum welding connector, and the two structures all utilize a foldable thin-wall heat-bridge structure. The valve utilizes a novel integrally total pneumatic-manual actuating mechanism, can remotely control pneumatic open and close, and simultaneously can nearly control manual open and close, besides, the two operation modes can be switched flexibly and conveniently. The stop valve is used in a low-temperature pipe system, and is extremely low in self-heat-leakage rate.
Description
[technical field]
The utility model relates to a kind of manual-pneumatic full one cryogenic vacuum multilayer heat insulation stop valve that is used for cryogenic system.
[background technique]
The normal control unit that uses stop valve as the cryogen break-make in cryogenic liquide storing and the low-temperature liquefaction system.Traditional cryogenic globe valve, its actuator is simple pneumatic or manual, and when pneumatic-when man-operated mechanism is combined, manually partly can only realize single opening function or closing function.Such function can not satisfy the special operational control requirement under some specific occasion; Traditional cryogenic globe valve adopts the outer sealing element of filler as low temperature space in the valve, causes the stop valve external leakage in cryogenic system easily; For satisfying long-term, the reliable sealing under the liquid hydrogen temperature, the new type low temperature sealing material has been adopted at the valve head position, has guaranteed the sealability of valve under liquid hydrogen temperature.
[summary of the invention]
The purpose of this utility model provide a kind of manually-pneumatic full one cryogenic vacuum multilayer heat insulation stop valve, it has been realized, and control far away opens and closes, the repertoire of pneumatic switching; Under liquid hydrogen temperature long-term, can innerly seal; Good external sealed performance; Long vacuum life valve and time of movement.
Above-mentioned purpose will realize by cryogenic vacuum multilayer heat insulation stop valve of the present utility model.
This novel cryogenic vacuum multilayer heat insulation stop valve mainly comprise adopt full-function pneumatic-manual incorporate actuator, use the valve head of new type low temperature sealing material, the valve body that has the cryogenic vacuum multiple layer heat insulation structure with fluid inlet and outlet, and the use bellows divides moving sealing element as the valve low-temp. portion and adopt special construction to reduce the spool that heat is leaked at this place.Valve body and the welded joint that adopts collapsible thin-walled heat bridge structure being connected of external system or vacuum flange with similar heat bridge structure.
Other details of the utility model cryogenic vacuum multilayer heat insulation stop valve, with and other purposes and the advantage followed, will illustrate in detailed below explanation and the accompanying drawing.
[description of drawings]
Fig. 1 be the utility model manually-sectional view of pneumatic full one cryogenic vacuum multilayer heat insulation stop valve, wherein Fig. 1 (a) is the sectional view of the new type low temperature vacuum multi-layer insulation stop valve that connects of welded joint; Fig. 1 (b) is the sectional view of the new type low temperature vacuum multi-layer insulation stop valve of vacuum flange connection.
Fig. 2 is actuator's sectional view of Fig. 1.
Fig. 3 is the sectional view of the valve body of Fig. 1.
Fig. 4 is the sectional view of the spool of Fig. 1.
Fig. 5 is the sectional view of the valve head of Fig. 1.
Fig. 6 is stop valve flanged joint and the pipe joint connection diagram of Fig. 1 (b).
Fig. 7 is stop valve welded joint and the pipe joint connection diagram of Fig. 1 (a).
[embodiment]
What Fig. 1 represented is manual-pneumatic full one cryogenic vacuum multilayer heat insulation stop valve.Valve has and adopts pneumatic-manual complete incorporate actuator 1, has the valve body 2 of vacuum multi-layer insulation structure, cooperates the spool 3 of controlling the fluid break-make and the valve head 4 that adopts new modified polyimide as sealing material with valve body, valve head.Fluid enters valve from runner 21, flows out valve from exporting 22.Fig. 1 (a) is the valve that adopts welded joint, and Fig. 1 (b) is the valve that adopts the vacuum flange structure.
What Fig. 2 represented is stop valve actuator.Actuator is made up of cylinder 11, piston 10, control gas inlet union 5, control gas outlet connection 6, operation handwheel 8, valve position sensor 7 and associated fitting.When the manual do-part that handwheel drives was adjusted to free position, valve can carry out corresponding pneumatic operation.Lower air chamber venting air inlet time the in the actuator, then valve is realized closed pneumatic, on the contrary valve is then realized pneumatic opening.After manipulation gas was removed, valve can drive screw rod 9 driven plunger upstream or downstream by handwheel, thereby realized the manual open and close of valve.
What Fig. 3 represented is the valve body of stop valve.Outer valve 14, inner valve body 15, heat bridge structure 16 and end flange have constituted a sealed cavity, also are provided with support ring 18 between interior outer valve, and enclosed cavity vacuumizes by the mouth 12 of finding time; Inner valve body 15 outer walls are twining multilayer heat insulation layer 13; The valve seat outer wall of inner valve body 7 is placed sorbent 19.Leakage heat by above vacuum multi-layer insulation structure decrease low temperature lower valve.Entrance end is provided with a FlexbleJoint 17 respectively on the inner valve body 15, in order to the shrinkage at low temperatures of compensation valve, thereby avoids producing distortion and even the damage that excessive stress causes valve.
What Fig. 4 represented is the spool of stop valve.Form the normal temperature sealing by flange 20 and valve body.Bellows 24 on the spool is stroke bellowss of valve, and it is the moving sealing element of valve low temperature part simultaneously.Interior pipe 25 and 26 of outer tubes have formed enclosed space, and form slit between pipe respectively and in bellows 24 and the valve body.Prevent turning round being provided with of plate 23 and can prevent that 28 pairs of stroke bellowss of lower valve rod produce axial torsion in the valve operation process, thereby guaranteed the safety of bellows.
What Fig. 5 represented is the valve head parts.These parts are made up of valve head body 29 that has taper front end location guide and low temperature seal ring 30.For guaranteeing long-term, the reliable sealing of valve under liquid hydrogen temperature, seal ring 30 has adopted new modified polyimide low temperature seal material, and adopted special chimeric technology to guarantee closely chimeric between valve head body and seal ring, eliminate leakage by the two binding site.The terminal dop of lower valve rod in the spool embeds in the draw-in groove of valve head end, thereby forms the connection of the two.
Fig. 6 is the schematic representation that the flanged fitting cryogenic globe valve is connected with corresponding cryogenic piping.
Fig. 7 is the schematic representation that the welded fitting cryogenic globe valve is connected with corresponding cryogenic piping.
As can be seen by the utility model provide a kind of manually-pneumatic full one cryogenic vacuum multilayer heat insulation stop valve, realized fully integratedization of pneumatic-manual function having satisfied the SOR that valve is proposed.When realizing the fluid open and close controlling, significantly reduced the leakage heat of cryogenic piping system by stop valve, saved valuable low-temperature energy sources.The leakage quantity that leaks of valve is very little, and when being used for some dangerous cryogenic media, himself Security is good, and the safety of personnel, facility around having guaranteed.
The utility model has been described specific mode of execution in context, however for those skilled in the art after the explanation of having read the front, will be as can be seen other replacements, modifications and variations.Therefore in the scope of appending claims, comprise these replacements, modifications and variations.
Claims (1)
1. manual-pneumatic full one cryogenic vacuum multilayer heat insulation the stop valve that is applied in the cryogenic system comprises: the valve body with fluid inlet/outlet; The valve head that is used for the open and close valve; In order to connect the spool of valve head and actuator, realization valve seal; Actuator by spool is realized valve opening and closing is characterized in that, has adopted the integrated novel actuator of pneumatic switching function of control far away and nearly control manual function; The new modified polyimide as sealing material that valve head adopts; Spool adopts bellows as moving sealing element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820105487XU CN201228801Y (en) | 2008-04-06 | 2008-04-06 | Manual-pneumatic power integration low-temperature vacuum multilayer thermal insulation stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820105487XU CN201228801Y (en) | 2008-04-06 | 2008-04-06 | Manual-pneumatic power integration low-temperature vacuum multilayer thermal insulation stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201228801Y true CN201228801Y (en) | 2009-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820105487XU Expired - Fee Related CN201228801Y (en) | 2008-04-06 | 2008-04-06 | Manual-pneumatic power integration low-temperature vacuum multilayer thermal insulation stop valve |
Country Status (1)
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| CN (1) | CN201228801Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806365A (en) * | 2010-05-25 | 2010-08-18 | 山东华腾环保科技有限公司 | Vacuum angle seat valve |
| CN102878304A (en) * | 2012-09-26 | 2013-01-16 | 成都欣国立低温科技有限公司 | Fluid medium stop valve |
| CN103498995A (en) * | 2013-09-26 | 2014-01-08 | 北京航天试验技术研究所 | Valve of dual-vacuum structure |
| CN111535766A (en) * | 2020-05-13 | 2020-08-14 | 中石化石油工程技术服务有限公司 | Drilling fluid circulation system |
| CN113187905A (en) * | 2021-05-28 | 2021-07-30 | 深圳市伙伴气动精密机械有限公司 | Pneumatic stop valve and using method thereof |
| FR3141773A1 (en) * | 2022-11-08 | 2024-05-10 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Device for configuring a double hermetic enclosure probe, Application to analysis by nuclear magnetic resonance (NMR) spectroscopy at low temperature. |
-
2008
- 2008-04-06 CN CNU200820105487XU patent/CN201228801Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806365A (en) * | 2010-05-25 | 2010-08-18 | 山东华腾环保科技有限公司 | Vacuum angle seat valve |
| CN101806365B (en) * | 2010-05-25 | 2011-06-15 | 山东华腾环保科技有限公司 | Vacuum angle seat valve |
| CN102878304A (en) * | 2012-09-26 | 2013-01-16 | 成都欣国立低温科技有限公司 | Fluid medium stop valve |
| CN103498995A (en) * | 2013-09-26 | 2014-01-08 | 北京航天试验技术研究所 | Valve of dual-vacuum structure |
| CN103498995B (en) * | 2013-09-26 | 2016-02-03 | 北京航天试验技术研究所 | Two vacuum structure valve |
| CN111535766A (en) * | 2020-05-13 | 2020-08-14 | 中石化石油工程技术服务有限公司 | Drilling fluid circulation system |
| CN113187905A (en) * | 2021-05-28 | 2021-07-30 | 深圳市伙伴气动精密机械有限公司 | Pneumatic stop valve and using method thereof |
| FR3141773A1 (en) * | 2022-11-08 | 2024-05-10 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Device for configuring a double hermetic enclosure probe, Application to analysis by nuclear magnetic resonance (NMR) spectroscopy at low temperature. |
| WO2024100045A1 (en) * | 2022-11-08 | 2024-05-16 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Device for parameterising a probe having two sealed enclosures and use thereof in the field of low-temperature nuclear magnetic resonance (nmr) spectroscopy analysis |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090429 Termination date: 20120406 |