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CN201228802Y - Low-temperature vacuum multilayer thermal insulation adjusting valve - Google Patents

Low-temperature vacuum multilayer thermal insulation adjusting valve Download PDF

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Publication number
CN201228802Y
CN201228802Y CNU2008201054884U CN200820105488U CN201228802Y CN 201228802 Y CN201228802 Y CN 201228802Y CN U2008201054884 U CNU2008201054884 U CN U2008201054884U CN 200820105488 U CN200820105488 U CN 200820105488U CN 201228802 Y CN201228802 Y CN 201228802Y
Authority
CN
China
Prior art keywords
valve
low
adjusting valve
temperature
thermal insulation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNU2008201054884U
Other languages
Chinese (zh)
Inventor
陈虹
孙雅度
刘岩云
雷刚
温庆林
邢科伟
诸方舟
曾浩
周东兴
孙庆国
邱小林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Special Construction Design & Research Institute
Original Assignee
Beijing Special Construction Design & Research Institute
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Special Construction Design & Research Institute filed Critical Beijing Special Construction Design & Research Institute
Priority to CNU2008201054884U priority Critical patent/CN201228802Y/en
Application granted granted Critical
Publication of CN201228802Y publication Critical patent/CN201228802Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model provides a low-temperature vacuum multi-layer thermal insulation adjusting valve, can be used in a low-temperature pipe system of minus 253 DEG C or below the temperature. The adjusting valve utilizes a vacuum multi-layer thermal insulation structure as an insulation structure, a low-temperature portion utilizes a corrugated pipe as a moving seal element, the adjusting valve is connected with a pipe by a small vacuum welding connector, and the welding connector utilizes a foldable thin-wall heat-bridge structure. The valve utilizes a pneumatic film actuating mechanism of an electropneumatic positioner as a driving mechanism, and manual open and close is realized by a hand wheel. The adjusting valve is used in a low-temperature pipe system, and is extremely low in self-heat-leakage rate.

Description

Cryogenic vacuum multilayer heat insulation modulating valve
[technical field]
The utility model relates to a kind of cryogenic vacuum multilayer heat insulation modulating valve that is used for cryogenic piping system.
[background technique]
The normal control unit that uses modulating valve as flow in cryogenic liquide storing and the low-temperature liquefaction system.Traditional modulating valve is an individual layer, the outsourcing thermal insulation layer, and leaking heat is big, causes the meaningless loss of cryogenic liquide.Traditional low temperature modulating valve adopts the outer sealing element of filler as low temperature space in the valve, causes the modulating valve external leakage in cryogenic system easily.
[summary of the invention]
The purpose of this utility model provides a kind of low temperature modulating valve, and its use is leaked hot little in cryogenic system, and is difficult for producing external leakage.
Above-mentioned purpose will realize by cryogenic vacuum multilayer heat insulation modulating valve of the present utility model.This novel cryogenic vacuum multilayer heat insulation modulating valve mainly comprises the valve body with fluid inlet and outlet of employing cryogenic vacuum multilayer heat insulation as insulating structure, and the spool of band bellows.Bellows on the use spool is as the motive sealing of valve low temperature part.Valve body adopts the welded joint of collapsible thin-walled heat bridge structure to be connected with pipe-line system.
Other details of the utility model cryogenic vacuum multilayer heat insulation modulating valve, with and other purposes and the advantage followed, will illustrate in detailed below explanation and the accompanying drawing.
[description of drawings]
Fig. 1 is the sectional view of the utility model cryogenic vacuum multilayer heat insulation modulating valve.
Fig. 2 is the sectional view of the valve body of Fig. 1.
Fig. 3 is the sectional view of the spool of Fig. 1.
Fig. 4 is the pneumatic actuator sectional view of Fig. 1.
Fig. 5 is the valve seat sectional view of Fig. 2.
Fig. 6 is welded joint and the pipe joint connection diagram of Fig. 1.
[embodiment]
What Fig. 1 represented is cryogenic vacuum multilayer heat insulation modulating valve.Valve has the valve body 1 that has the vacuum multi-layer insulation structure, with the spool 2 of valve body fit adjustment flow, and the actuator 4 of control spool lifting, and the valve gap 3 that connects valve body 1 and actuator 4.Fluid enters valve from runner 21, after overregulating, flows out valve from exporting 22.
What Fig. 2 represented is the modulating valve valve body.Outer valve 6, inner valve body 7, welded joint 9 and lid 14 have constituted an enclosed cavity 23, and this enclosed cavity vacuumizes by the mouth 13 of finding time.Inner valve body 7 outer walls are twining multilayer heat insulation layer 12, and heat insulation layer alternately is entwined by aluminium foil and glass fiber cloth.Valve seat 8 outer walls of inner valve body 7 are placed sorbent 11.After enclosed cavity 23 vacuumizes, the heat transfer by convection of outer valve mezzanine space in significantly reducing; Inner valve body 7 outer walls are twining the multilayer heat insulation layer, reduce the radiative heat transfer amount between inside and outside valve body; Valve seat 8 outer walls are placed sorbent, and when cryogen flow through in valve, sorbent was cooled to very low temperature.The sorbent that adopts has extremely strong adsorptive power for gas molecule at low temperatures, thereby the residual gas molecule in the vacuum chamber is fully adsorbed, and has guaranteed the condition of high vacuum degree in the vacuum chamber thus.Above being provided with constituted the vacuum multi-layer insulation structure, reduced the leakage heat of valve.When the degree of vacuum of enclosed cavity 23 is too high, can vacuumize again by the mouth 13 of finding time, guaranteed the maintainability of valve.
Entrance end is provided with a FlexbleJoint 10 respectively on the inner valve body 7, 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. 3 represented is the spool of modulating valve.Bellows 17 on the spool is stroke bellowss of valve, and it is the moving sealing element of valve low temperature part simultaneously.As shown in Figure 1, the pallet 18 on the bellows is sandwiched between lid 14 and the valve gap 3, uses washer sealing between the three, and lid 14 is fastening with valve gap 3 usefulness stud and nut.Along with the lifting of spool, bellows is flexible thereupon, regulates the interior low temperature part of valve pocket like this and is just kept apart by bellows with valve pocket top, and the packing seals 19 in the valve gap 3 just work in the temperature near normal temperature.The double sealing of bellows and filler has guaranteed the reliability of modulating valve external sealed.
Fig. 4 represents is valve seat 8 in the inner valve body 7.Fluid 28 flows into from entering the mouth, and the adjusting by cooperating between the valve head 15 in sealing surface 26 and the spool 2 from exporting 29 outflows, has realized the purpose of regulated fluid.Plating department titanium Lay alloy on the sealing surface 25 on sealing surface 26 and the valve head 15 makes sealing surface not easy to wear on the valve seat 8.Guide section 24 cooperatively interacts on valve seat 8 guide sections 27 and the valve head 15, has guaranteed the cooperation of sealing surface 26 and 25, has reduced the interior leakage of modulating valve, and also plating department titanium Lay alloy on the guide section 27,24 makes it not easy to wear.
Fig. 5 is the pneumatic actuator 4 of this low temperature modulating valve.Provide power to make spool 3 liftings by it, regulate the relative position between valve head 15 and the valve seat 8, thereby realize the purpose of regulated fluid.The pressure that charged gas positioning work piece 20 on the pneumatic actuator, the electrical signal by control change propellant is realized the location of spool 3 positions.The hand switch of modulating valve drives spool 3 liftings by handwheel 5 and realizes.
Fig. 6 is the schematic representation that this low temperature modulating valve is connected with the welding type cryogenic piping.Welded joint 9 all is weldingly connected with stainless steel with welded joint 32 inner and outer pipes of pipeline, forms enclosed cavity 30, and this enclosed cavity is evacuated by the mouth 31 of finding time.So just reduced the heat transfer by convection between inner and outer pipes.Welded joint 9 is made the structure of folding thin wall-type simultaneously, makes thermal resistance increase, and inner and outer pipes is little by the leakage heat of joint heat bridge conduction.
A kind of cryogenic vacuum multilayer heat insulation modulating valve that provides by the utility model when realizing fluid regulation, has significantly reduced the leakage heat of cryogenic piping system by modulating valve as can be seen, has saved valuable low-temperature energy sources.
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. a cryogenic vacuum multilayer heat insulation modulating valve that is used in the cryogenic piping system comprises: the valve body with stream socket; The spool that is used for controlling opening of valve; The actuator of control spool lifting is characterized in that valve body adopts the structure of vacuum multilayer insulation as insulating structure; Valve body adopts the welded joint of collapsible thin-walled heat bridge structure; Be with bellows on the spool, make valve low temperature partly adopt bellows as moving sealing element.
CNU2008201054884U 2008-04-06 2008-04-06 Low-temperature vacuum multilayer thermal insulation adjusting valve Expired - Fee Related CN201228802Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008201054884U CN201228802Y (en) 2008-04-06 2008-04-06 Low-temperature vacuum multilayer thermal insulation adjusting valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008201054884U CN201228802Y (en) 2008-04-06 2008-04-06 Low-temperature vacuum multilayer thermal insulation adjusting valve

Publications (1)

Publication Number Publication Date
CN201228802Y true CN201228802Y (en) 2009-04-29

Family

ID=40633753

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2008201054884U Expired - Fee Related CN201228802Y (en) 2008-04-06 2008-04-06 Low-temperature vacuum multilayer thermal insulation adjusting valve

Country Status (1)

Country Link
CN (1) CN201228802Y (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104736911A (en) * 2012-10-01 2015-06-24 林德股份公司 A flow apparatus
CN104806802A (en) * 2015-04-27 2015-07-29 连云港远洋流体装卸设备有限公司 Breaking valve for LNG (Liquefied Natural Gas)
CN104976404A (en) * 2014-04-03 2015-10-14 中国科学院理化技术研究所 Pneumatic low-temperature regulating valve
CN108361426A (en) * 2018-01-16 2018-08-03 西安航天动力试验技术研究所 Low temperature pneumatic stopping valve with heat insulation structural
CN108470079A (en) * 2017-10-26 2018-08-31 北京特种工程设计研究院 Space launching site relates to core operation radiation safety assessment emulation mode
CN109268556A (en) * 2018-11-06 2019-01-25 江苏圣泰阀门有限公司 Ultralow temperature shut-off valve

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104736911A (en) * 2012-10-01 2015-06-24 林德股份公司 A flow apparatus
CN104736911B (en) * 2012-10-01 2017-03-08 林德股份公司 Flow apparatus
US10047876B2 (en) 2012-10-01 2018-08-14 Linde Aktiengesellschaft Flow apparatus
CN104976404A (en) * 2014-04-03 2015-10-14 中国科学院理化技术研究所 Pneumatic low-temperature regulating valve
CN104976404B (en) * 2014-04-03 2018-04-20 北京中科富海低温科技有限公司 A kind of Pneumatic low temperature regulating valve
CN104806802A (en) * 2015-04-27 2015-07-29 连云港远洋流体装卸设备有限公司 Breaking valve for LNG (Liquefied Natural Gas)
CN108470079A (en) * 2017-10-26 2018-08-31 北京特种工程设计研究院 Space launching site relates to core operation radiation safety assessment emulation mode
CN108470079B (en) * 2017-10-26 2023-04-07 北京特种工程设计研究院 Simulation method for radiation safety evaluation of nuclear operation of space launching field
CN108361426A (en) * 2018-01-16 2018-08-03 西安航天动力试验技术研究所 Low temperature pneumatic stopping valve with heat insulation structural
CN109268556A (en) * 2018-11-06 2019-01-25 江苏圣泰阀门有限公司 Ultralow temperature shut-off valve

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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