CN107489858B - The hot On Tranofer Tube For Liquid Helium of low drain - Google Patents
The hot On Tranofer Tube For Liquid Helium of low drain Download PDFInfo
- Publication number
- CN107489858B CN107489858B CN201710810463.8A CN201710810463A CN107489858B CN 107489858 B CN107489858 B CN 107489858B CN 201710810463 A CN201710810463 A CN 201710810463A CN 107489858 B CN107489858 B CN 107489858B
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- tube
- cold screen
- liquid helium
- hot
- vacuum
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/06—Arrangements using an air layer or vacuum
- F16L59/065—Arrangements using an air layer or vacuum using vacuum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L53/00—Heating of pipes or pipe systems; Cooling of pipes or pipe systems
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
Abstract
The present invention provides a kind of hot On Tranofer Tube For Liquid Heliums of low drain, comprising: vacuum outer tube, both ends are respectively equipped with infusion connector；Cold screen sealing structure, it is threaded through in the vacuum outer tube, and there is the cold screen sealing structure infusion inner tube and cold screen pipe, the cold screen seal of tube to be set in outside the infusion inner tube, it is formed with seal chamber between the cold screen pipe and the infusion inner tube, is filled with gas in the seal chamber；The shell for containing adsorbent is arranged in the infusion inner tube, the shell is located in the seal chamber.The hot On Tranofer Tube For Liquid Helium of low drain of the invention, can effectively reduce the loss of liquid helium in liquid helium transmission process.
Description
Technical field
The present invention is low more particularly to applying in a kind of refrigeration & cryogenic engineering field about a kind of On Tranofer Tube For Liquid Helium
Leak hot On Tranofer Tube For Liquid Helium.
Background technique
With the development of technology, application of the liquid helium in fields such as low-temperature physics, low-temperature superconductings is more and more wider, due to liquid helium
Temperature is extremely low (temperature of liquid helium is -269 DEG C), therefore is easy to gasification, especially in liquid helium transmission process.Simultaneously liquid helium at
This is high, if not configuring helium recovery unit, direct emission will cause biggish economic loss by the helium of gasification.
High vacuum multiple layer heat insulation structure is directlyed adopt in traditional On Tranofer Tube For Liquid Helium, due to lacking suitable cold source, is not had
There is setting low temperature cold screen, causes leakage heat larger.
Summary of the invention
The object of the present invention is to provide a kind of hot On Tranofer Tube For Liquid Helium of low drain, liquid helium in liquid helium transmission process can be effectively reduced
Loss.
Following technical proposal can be used to realize in above-mentioned purpose of the invention:
The present invention provides a kind of hot On Tranofer Tube For Liquid Helium of low drain comprising:
Vacuum outer tube, both ends are respectively equipped with infusion connector；
Cold screen sealing structure is threaded through in the vacuum outer tube, and the cold screen sealing structure has infusion inner tube and cold
Screen pipe, the cold screen seal of tube are set in outside the infusion inner tube, are formed between the cold screen pipe and the infusion inner tube close
Chamber is sealed, is filled with gas in the seal chamber；The shell for containing adsorbent is arranged in the infusion inner tube, the shell is located at
In the seal chamber.
In embodiments of the present invention, multiple insulation support knot is equipped between the cold screen pipe and the vacuum outer tube
Structure.
In embodiments of the present invention, the insulation support construction is the plate structure with multiple abutments, described
Plate structure is socketed on the cold screen pipe, and multiple abutments are connected on the inner wall of the vacuum outer tube.
In embodiments of the present invention, the gas is nitrogen or argon gas.
In embodiments of the present invention, the infusion inner tube is equipped with bellows, and the bellows is located at the cold screen
In pipe.
In embodiments of the present invention, the outside of the cold screen pipe and the infusion inner tube are pierced by the cold screen pipe
Both ends are arranged with multilayer insulant layer respectively.
In embodiments of the present invention, the hot On Tranofer Tube For Liquid Helium of the low drain has cryogenic globe valve, the low temperature cut-off
Valve is connected to the infusion inner tube.
In embodiments of the present invention, it is formed with vacuum chamber between the vacuum outer tube and the cold screen sealing structure,
The vacuum outer tube is equipped with and vacuumizes interface, and the interface that vacuumizes is connected with the vacuum chamber.
In embodiments of the present invention, two infusion connectors of the vacuum outer tube are respectively connected with mouthpiece, institute
Stating mouthpiece has the external tapping pipe being connected with the vacuum outer tube, and the inner joint pipe being connected with the infusion inner tube, institute
The external tapping seal of tube is stated to be set in outside the inner joint pipe, be formed between the external tapping pipe and the inner joint pipe with it is described
The hub cavity that vacuum chamber is connected.
In embodiments of the present invention, the vacuum outer tube is multiple, passes through vacuum between multiple vacuum outer tubes
Band mesh grid flexible pipe is connected；The cold screen sealing structure be it is multiple, multiple cold screen sealing structures are connected in series setting and exist
In multiple vacuum outer tubes, it is connected between the both ends of the infusion inner tube of each cold screen sealing structure by bellows.
The characteristics of low drain of the invention hot On Tranofer Tube For Liquid Helium and advantage are: the hot On Tranofer Tube For Liquid Helium of the low drain is provided with cold screen pipe
And seal chamber, by the heat convection mode of cold screen pipe and infusion inner tube, cold source needed for solving the problems, such as cold screen pipe cooling, together
When utilize the Refrigeration Technique of adsorbent again, avoid the loss of convection current leakage heat under extremely low temperature, effectively reduce in infusion process and manage
Leakage heat in road reduces the liquid helium loss in infusion process.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the schematic cross-sectional view of the hot On Tranofer Tube For Liquid Helium of low drain of the invention.
Fig. 2 is the schematic diagram of the insulation support construction of the hot On Tranofer Tube For Liquid Helium of low drain of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As depicted in figs. 1 and 2, the present invention provides a kind of hot On Tranofer Tube For Liquid Helium of low drain comprising vacuum outer tube 1 and cold screen are close
Seal structure 2, in which: the both ends of vacuum outer tube 1 are respectively equipped with infusion connector 11；Cold screen sealing structure 2 is threaded through outside the vacuum
In pipe 1, the cold screen sealing structure 2 has infusion inner tube 21 and cold screen pipe 22, and the cold sealing of screen pipe 22 is set in described defeated
Outside liquid inner tube 21, seal chamber 23, filling in the seal chamber 23 are formed between the cold screen pipe 22 and the infusion inner tube 21
There is gas；It is arranged with the shell 24 for containing adsorbent 241 in the infusion inner tube 21, the shell 24 is located at the seal chamber 23
It is interior.
Specifically, vacuum outer tube 1 is substantially cylindrical, it is made of stainless steel material, the wall thickness of the vacuum outer tube 1 is less than
Or it is equal to 3mm；The both ends of the vacuum outer tube 1 are respectively formed there are two infusion connector 11.In the present embodiment, vacuum outer tube 1
One end is connected with adapter tube 12, adapter tube 12 and the perpendicular setting of vacuum outer tube 1 and is oppositely arranged with infusion connector 11, the adapter tube 12 tool
There are inner connecting tube 121 and extension tube attached 122, which is connected with vacuum outer tube 1, shape between inner connecting tube 121 and extension tube attached 122
At there is adapter tube chamber 123.
Cold screen sealing structure 2 is arranged in vacuum outer tube 1, vacuum chamber 13 is formed between vacuum outer tube 1, the vacuum
Chamber 13 is connected with adapter tube chamber 123；In the present embodiment, it is connected on vacuum outer tube 1 and vacuumizes interface 16, this vacuumizes interface
16 are connected with vacuum chamber 13；Certainly, in other examples, this, which vacuumizes interface 16, may be provided at the extension tube attached of adapter tube 12
On 122, herein with no restrictions.The external vacuum pump of interface 16 is vacuumized by this, it can be achieved that vacuumizing operation to vacuum chamber 13,
Use is vacuumized again after can also be used for vacuum failure, it is convenient and efficient.
The cold screen sealing structure 2 has infusion inner tube 21 and cold screen pipe 22, and the sealing of Leng Pingguan 22 is set in infusion inner tube 21
Outside, in the present embodiment, the generally tubular structure of Leng Pingguan 22, is made of oxygen-free copper or red copper material, and Leng Pingguan's 22 is outer
Surface can effectively ensure that the finish on its surface, reduced the emissivity of material surface using polishing or electroplating processes.At this
In invention, the both ends of the cold screen pipe 22 are sealedly attached to infusion inner tube 21, the end part seal connector by end part seal connector 221
221 be the thin-walled tube body made of stainless steel material or titanium alloy material, is welded to connect end and the infusion of Yu Lengping pipe 22
Between the outer tube wall of inner tube 21, so as to effectively seal the seal chamber 23 formed between infusion inner tube 21 and cold screen pipe 22,
The direct thermally conductive leakage heat of infusion inner tube 21 and cold screen pipe 22 can be effectively reduced.The infusion inner tube 21 is pierced by the both ends of cold screen pipe 22
It is respectively protruding into two infusion connectors 11 at 1 both ends of vacuum outer tube.
In the present invention, the hot On Tranofer Tube For Liquid Helium of the low drain also has cryogenic globe valve 4, which is connected to defeated
Liquid inner tube 21.The cryogenic globe valve 4 is used to control the flow in liquid helium transmission process, can be hand-operated valve, pneumatic operated valve or electricity
Dynamic control valve.The cryogenic globe valve 4 in addition to valve handle all is arranged in vacuum outer tube 1, the import of the cryogenic globe valve 4 with it is aftermentioned
Mouthpiece 14 inner joint pipe 142 be welded to connect, outlet with infusion inner tube 21 be welded to connect, valve handle pass through flange or weldering
Binding structure is connected with vacuum outer tube 1.
The shell 24 with multiple apertures is arranged in the infusion inner tube 21, which for example can be used the mode of bonding
It is connected to the outer wall of infusion inner tube 21, is placed with adsorbent 241 in the shell 24, in the present embodiment, which can be
The porous media materials such as active carbon or molecular sieve.In the present invention, the both ends of the infusion inner tube 21 in seal chamber 23 point
It is not connected with the shell 24 for being loaded with adsorbent 241.
It, in the present embodiment, should filled with gas in the seal chamber 23 formed between the infusion inner tube 21 and cold screen pipe 22
Gas can be nitrogen or argon gas, under normal temperature condition (such as 20 DEG C), the control of gas pressure in seal chamber 23 100Pa~
1000Pa。
Further, two infusion connectors 11 of the vacuum outer tube 1 are respectively connected with mouthpiece 14, the mouthpiece 14 have with
The connected external tapping pipe 141 of vacuum outer tube 1, and the inner joint pipe 142 being connected with infusion inner tube 21, the external tapping pipe 141 are close
Big envelope is located at outside inner joint pipe 142, is formed between the external tapping pipe 141 and inner joint pipe 142 and is connected with vacuum chamber 13
Hub cavity 143.
In the present embodiment, infusion inner tube 21 is pierced by the both ends of the cold screen pipe 22 inner joint pipe with each mouthpiece 14 respectively
142 are connected, and one end of the external tapping pipe 141 of each mouthpiece 14 is connected with vacuum outer tube 1, and other end sealing welding is in inner joint
The end of pipe 142, so that the hub cavity 143 and vacuum chamber 13 that are connected form whole sealing structure.
In present invention embodiment shown in FIG. 1, the generally straight tube-like of vacuum outer tube 1, two mouthpieces 14 are connected to
The both ends of vacuum outer tube 1, and respectively with the perpendicular setting of vacuum outer tube 1 so that the hot On Tranofer Tube For Liquid Helium of low drain of the invention
Overall U-shaped structure；Certainly, in other embodiments, two mouthpieces 14 can also setting parallel with vacuum outer tube 1, with
Making the hot On Tranofer Tube For Liquid Helium of low drain of the invention is integrally in linear type structure；Alternatively, in a further embodiment, two mouthpieces 14
In one of with the perpendicular setting of vacuum outer tube 1, another mouthpiece 14 setting parallel with vacuum outer tube 1, so that this hair
The whole L-shaped structure of the hot On Tranofer Tube For Liquid Helium of bright low drain, herein with no restrictions.
In infusion process, two infusion connectors 11 of the hot On Tranofer Tube For Liquid Helium of low drain are separately connected mouthpiece 14 first
Afterwards, it is connected to liquid helium Dewar and related liquid helium application apparatus.Before initial infusion, entire inner tube 21 of being infused is all in normal temperature state
(20 DEG C), liquid helium are directly entered infusion inner tube 21, and begin to cool infusion inner tube 21, at this time due to having gas in seal chamber 23,
The heat convection between infusion inner tube 21 and cold screen pipe 22 can be strengthened, so that cold screen pipe 22 also fast cooling, with defeated
The reduction of 21 temperature of liquid inner tube, the temperature of adsorbent 241 also decrease, and adsorbent 241 has the adsorption capacity of gas
Effect is strengthened, so that the gas in seal chamber 23 is all adsorbed or freezed solidification, realizes high vacuum in seal chamber 23, inner tube of being infused
Leakage heat between 21 and cold screen pipe 22 substantially reduces, at this time since the temperature of cold screen pipe 22 has quickly been reduced, according to spoke
Penetrate the hot formula Q=ε σ A (T of leakageh 4-Tl 4),
Wherein, Q: radiation leaking heat, unit are W (watt)；
ε: slin emissivity；
σ: Boltzmann constant, 5.67 × 10-8W/m2K4, unit W/m2K4(four times of watt every square metre of every Kelvin
Side)；
Th: high-temperature material surface temperature, unit are K (Kelvin)；
Tl: cryogenic material surface temperature, unit are K (Kelvin)；
According to above formula, under conditions of cryogenic material surface temperature is constant, high-temperature material surface temperature is dropped from 300K
Down to 80K hereinafter, radiation leakage heat, which will have, is reduced to original 1/200th.Therefore the spoke of infusion inner tube 21 can quickly be reduced
Penetrate leakage heat.
The hot On Tranofer Tube For Liquid Helium of low drain of the invention is provided with cold screen pipe 22 and seal chamber 23, passes through cold screen pipe 22 and infusion
The heat convection mode of inner tube 21 solves the problems, such as that cold screen pipe 22 cools down required cold source, while utilizing the cold of adsorbent 241 again
Freeze techniques avoid the loss of convection current leakage heat under extremely low temperature, effectively reduce pipeline leakage heat in infusion process, reduce infusion process
In liquid helium loss.Due to the introducing of cold screen pipe 22, small flow liquid helium infusion advantage is especially apparent.
According to embodiment of the present invention, multiple insulation support knot is equipped between the cold screen pipe 22 and vacuum outer tube 1
Structure 3.
As shown in Fig. 2, the insulation support construction 3 is the plate structure with multiple abutments 31, plate structure socket
On cold screen pipe 22, multiple abutments 31 are connected on the inner wall of vacuum outer tube 1.In the present embodiment, the insulation support construction 3
Substantially rectangular plate, there are four abutment 31, the middle parts of the insulation support construction 3 to be equipped with for being socketed cold screen pipe 22 for tool
Connecting hole, inner wall of four abutments 31 of the insulation support construction 3 respectively with vacuum outer tube 1 be weldingly connected；Further,
Four perforation 32 are additionally provided with close to the external place of four abutments 31 in the insulation support construction 3, the perforation 32 is for being connected to absolutely
The inner cavity of the vacuum outer tube 1 of hot 3 two sides of support construction.The insulation support construction 3 generally use low thermal conductivity material processing and
At, such as can (G10 is a kind of to be answered as glass fabric with synthesized by epoxy number rouge for stainless steel material or G10 material
Condensation material), the inside for being usually insulated support construction 3 is contacted with the cold directly fixation of screen pipe 22, and outside is connect using the point of abutment 31
Touching mode is connect with vacuum outer tube 1, so that the middle part of cold screen pipe 22 be avoided directly to contact with the middle part of vacuum outer tube 1, cause compared with
Big leakage heat.The insulation support construction 3 is applicable in the longer structure of vacuum outer tube 1, prevents vacuum outer tube 1 and cold screen pipe 22
Directly contact.
Further, in the present invention, which is equipped with bellows 211, and the bellows 211 is located at described
In cold screen pipe 22.In order to avoid due to cold screen pipe 22 with infusion inner tube 21 since low-temperature shrink amount difference causes to be seal failure,
Therefore bellows 211 is set in the infusion inner tube 21 in seal chamber 23, for compensating deflection.
Further, the both ends that the outside of the cold screen pipe 22 and infusion inner tube 21 are pierced by the cold screen pipe 22 are arranged respectively
There is multilayer insulant layer.The insulation material layer can be aluminium plating terylene film, further decrease leakage heat, to guarantee system leakage heat to the greatest extent
It may be small.
According to embodiment of the present invention, which is multiple, passes through vacuum between multiple vacuum outer tubes 1
Band mesh grid flexible pipe 15 is connected；The cold screen sealing structure 2 be it is multiple, multiple cold screen sealing structures 2, which are connected in series, to be arranged more
In a vacuum outer tube 1, it is connected between the both ends of the infusion inner tube 21 of each cold screen sealing structure 2 by bellows 212.
Specifically, passing through vacuum belt mesh grid flexible pipe 15 between the vacuum outer tube 1 adjacent two-by-two of multiple vacuum outer tubes 1
It connects adjacent, wherein it is metal net that vacuum belt mesh grid flexible pipe 15, which is outside, and inside is the pipe of flexible hydraulic bellows
Body is made of stainless steel material.
Multiple cold screen sealing structures 2, which are connected in series, to be arranged in multiple vacuum outer tubes 1, the cold screen sealing of two be disposed adjacent
It is connected between the end of the infusion inner tube 21 of structure 2 by bellows 212, the bellows 212 and vacuum belt mesh grid flexible pipe
15 are oppositely arranged.
In order to ensure the flexibility of the hot On Tranofer Tube For Liquid Helium of low drain of the invention, facilitate operation, which, which uses, divides
Section arragement construction, and bellows 212 and vacuum belt mesh grid are used between every section of infusion inner tube 21 and between vacuum outer tube 1
The flexible connecting structure of flexible pipe 15, to meet overall flexibility demand.The present invention is while reducing leakage heat, to greatest extent
It ensure that the flexibility of the hot On Tranofer Tube For Liquid Helium of low drain.
The foregoing is merely several embodiments of the present invention, and those skilled in the art is according to application documents disclosure
Various changes or modifications can be carried out without departing from the spirit and scope of the present invention to the embodiment of the present invention.
Claims (10)
1. a kind of hot On Tranofer Tube For Liquid Helium of low drain, comprising: vacuum outer tube, both ends are respectively equipped with infusion connector, which is characterized in that also
Include:
Cold screen sealing structure is threaded through in the vacuum outer tube, and the cold screen sealing structure has infusion inner tube and cold screen pipe,
The cold screen seal of tube is set in outside the infusion inner tube, is formed with seal chamber between the cold screen pipe and the infusion inner tube,
Gas is filled in the seal chamber；The shell for containing adsorbent is arranged in the infusion inner tube, the shell is located at described
In seal chamber.
2. the hot On Tranofer Tube For Liquid Helium of low drain as described in claim 1, which is characterized in that the cold screen pipe and the vacuum outer tube it
Between be equipped with multiple insulation support constructions.
3. the hot On Tranofer Tube For Liquid Helium of low drain as claimed in claim 2, which is characterized in that the insulation support construction is with multiple
The plate structure of abutment, the plate structure are socketed on the cold screen pipe, and multiple abutments are connected to the vacuum
On the inner wall of outer tube.
4. the hot On Tranofer Tube For Liquid Helium of low drain as described in claim 1, which is characterized in that the gas is nitrogen or argon gas.
5. the hot On Tranofer Tube For Liquid Helium of low drain as described in claim 1, which is characterized in that the infusion inner tube is equipped with bellows,
The bellows is located in the cold screen pipe.
6. the hot On Tranofer Tube For Liquid Helium of low drain as described in claim 1, which is characterized in that the outside of the cold screen pipe and described defeated
The both ends that liquid inner tube is pierced by the cold screen pipe are arranged with multilayer insulant layer respectively.
7. the hot On Tranofer Tube For Liquid Helium of low drain as described in claim 1, which is characterized in that the hot On Tranofer Tube For Liquid Helium of low drain has low
Warm shut-off valve, the cryogenic globe valve are connected to the infusion inner tube.
8. the hot On Tranofer Tube For Liquid Helium of low drain as described in claim 1, which is characterized in that the vacuum outer tube and the cold screen seal
Vacuum chamber is formed between structure, the vacuum outer tube is equipped with and vacuumizes interface, described to vacuumize interface and the vacuum chamber
It is connected.
9. the hot On Tranofer Tube For Liquid Helium of low drain as claimed in claim 8, which is characterized in that two infusions of the vacuum outer tube
Interface is respectively connected with mouthpiece, and the mouthpiece has an external tapping pipe being connected with the vacuum outer tube, and with the infusion
The connected inner joint pipe of inner tube, the external tapping seal of tube are set in outside the inner joint pipe, the external tapping pipe with it is described interior
The hub cavity being connected with the vacuum chamber is formed between mouthpiece.
10. the hot On Tranofer Tube For Liquid Helium of low drain as claimed in any one of claims 1-9 wherein, which is characterized in that the vacuum outer tube is
It is multiple, it is connected between multiple vacuum outer tubes by vacuum belt mesh grid flexible pipe；The cold screen sealing structure be it is multiple, it is more
A cold screen sealing structure, which is connected in series, to be arranged in multiple vacuum outer tubes, each cold screen sealing structure it is described defeated
It is connected between the both ends of liquid inner tube by bellows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710810463.8A CN107489858B (en) | 2017-09-11 | 2017-09-11 | The hot On Tranofer Tube For Liquid Helium of low drain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710810463.8A CN107489858B (en) | 2017-09-11 | 2017-09-11 | The hot On Tranofer Tube For Liquid Helium of low drain |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107489858A CN107489858A (en) | 2017-12-19 |
| CN107489858B true CN107489858B (en) | 2019-04-30 |
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ID=60651630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710810463.8A Active CN107489858B (en) | 2017-09-11 | 2017-09-11 | The hot On Tranofer Tube For Liquid Helium of low drain |
Country Status (1)
| Country | Link |
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| CN (1) | CN107489858B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110017919B (en) * | 2018-01-10 | 2021-02-12 | 中国科学院理化技术研究所 | Low-temperature infusion pipeline heat leakage testing system and measuring method |
| CN114165653A (en) * | 2021-11-04 | 2022-03-11 | 中国工程物理研究院应用电子学研究所 | Multichannel liquid helium transfusion pipe and liquid helium transfusion device |
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| CN203963355U (en) * | 2014-05-23 | 2014-11-26 | 北京航天发射技术研究所 | A kind of new type low temperature vacuum multi-layer insulation abnormity pipeline |
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| US7517576B2 (en) * | 2004-10-12 | 2009-04-14 | Hitachi Appliances, Inc. | Vacuum insulation panel |
| CN2755404Y (en) * | 2004-11-30 | 2006-02-01 | 贾林祥 | Low-temperature fluid pipeline of vacuum sandwich with cold screen |
| CN2913782Y (en) * | 2005-07-06 | 2007-06-20 | 贾林祥 | Thermally-insulated support means of vacuum interlayer cryogenic fluid delivery conduit with cooling screen |
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| EP2730831A1 (en) * | 2012-11-08 | 2014-05-14 | Linde Aktiengesellschaft | Pipeline apparatus |
| CN203823261U (en) * | 2014-04-22 | 2014-09-10 | 中国科学院等离子体物理研究所 | Low-temperature pipeline return gas cold shieldsystem |
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|---|---|
| CN107489858A (en) | 2017-12-19 |
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