CN110308175A - The device that multilayer insulant is tested under a kind of storage of liquid helium and liquid helium region - Google Patents
The device that multilayer insulant is tested under a kind of storage of liquid helium and liquid helium region Download PDFInfo
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- CN110308175A CN110308175A CN201910690486.9A CN201910690486A CN110308175A CN 110308175 A CN110308175 A CN 110308175A CN 201910690486 A CN201910690486 A CN 201910690486A CN 110308175 A CN110308175 A CN 110308175A
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- liquid nitrogen
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- gallbladder
- helium
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- 239000007788 liquid Substances 0.000 title claims abstract description 199
- 239000001307 helium Substances 0.000 title claims abstract description 108
- 229910052734 helium Inorganic materials 0.000 title claims abstract description 108
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 title claims abstract description 108
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 286
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 142
- 210000000232 gallbladder Anatomy 0.000 claims abstract description 82
- 238000009413 insulation Methods 0.000 claims abstract description 34
- 238000005259 measurement Methods 0.000 claims abstract description 29
- 239000002250 absorbent Substances 0.000 claims abstract description 11
- 230000002745 absorbent Effects 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 15
- HSHNITRMYYLLCV-UHFFFAOYSA-N 4-methylumbelliferone Chemical compound C1=C(O)C=CC2=C1OC(=O)C=C2C HSHNITRMYYLLCV-UHFFFAOYSA-N 0.000 claims description 7
- 229960001396 hymecromone Drugs 0.000 claims description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical group [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 239000003463 adsorbent Substances 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 abstract description 11
- 238000012360 testing method Methods 0.000 abstract description 7
- 238000011056 performance test Methods 0.000 abstract description 4
- 238000012546 transfer Methods 0.000 description 6
- 238000001704 evaporation Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000011810 insulating material Substances 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002631 hypothermal effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L21/00—Vacuum gauges
- G01L21/10—Vacuum gauges by measuring variations in the heat conductivity of the medium, the pressure of which is to be measured
- G01L21/12—Vacuum gauges by measuring variations in the heat conductivity of the medium, the pressure of which is to be measured measuring changes in electric resistance of measuring members, e.g. of filaments; Vacuum gauges of the Pirani type
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L21/00—Vacuum gauges
- G01L21/30—Vacuum gauges by making use of ionisation effects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/18—Investigating or analyzing materials by the use of thermal means by investigating thermal conductivity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Thermal Insulation (AREA)
Abstract
The invention discloses the devices that multilayer insulant under a kind of storage of liquid helium and liquid helium region is tested, it include vacuum staving, cover board is installed at the top of vacuum staving, bottom end side, which is equipped with, evacuates mouth, the cold screen of water storage type liquid nitrogen is provided in vacuum barrel body, it is successively provided with liquid nitrogen bucket from top to bottom in the cold screen of liquid nitrogen, insulation board, upper protection gallbladder, measure gallbladder, lower protection gallbladder and absorbent packet, liquid nitrogen inlet tube and nitrogen muffler are connected separately on vacuum staving and liquid nitrogen bucket, liquid helium inlet tube is connected separately on upper protection gallbladder and measurement gallbladder, helium muffler and liquidometer installing pipe, the cold screen of liquid nitrogen, liquid nitrogen bucket, upper protection gallbladder, measure gallbladder, on the lateral wall of lower protection gallbladder and the upper plane of insulation board is enclosed with multilayer insulant respectively.The present invention can facilitate, accurately and accurately test various multilayer insulants, and device is easily installed, and convenient for operation, be applicable to the storage of different multilayer insulant performance test and different cryogenic fluids.
Description
Technical field:
The present invention relates to the performance test apparatus fields of the storage of cryogenic fluid and multilayer insulant, relate generally to a kind of liquid helium
The device that multilayer insulant is tested under storage and liquid helium region.
Background technique:
Helium is the essential working medium of cryogenic system, and refrigeration machine can realize the liquefaction of helium, and be scientific research
And the key areas such as aerospace provide the experiment condition of extremely low temperature.Since the latent heat of liquid helium is very small, it is easy to steam
Hair.How expert that liquid helium be domestic and international low temperature field and scholar always facing challenges and urgently to be resolved are stored for a long time
Problem.
Solve the problems, such as storage cryogenic fluid, actually need to obtain one reliable and stable and thermal insulation property more preferably
Hold-up vessel.And high vacuum multiple layer heat insulation is as currently used most adiabatic method, the heat-insulating property of heat-insulating material by
The concern of domestic and foreign scholars, is dedicated to seeking the combination of more suitable combination of materials mode and new material all the time to wish
Better insulation effect can be obtained.And the mechanism that autonomous production liquid helium is capable of in the current country is less, so more under liquid helium region
The performance test data of layer heat-insulating material is also less, it is therefore desirable to a kind of a kind of device that can have not only stored but also can test
Summary of the invention:
The object of the invention is to remedy the disadvantages of known techniques, and it is exhausted to provide multilayer under a kind of storage of liquid helium and liquid helium region
The device of hot material test, not only can be used for the storage of cryogenic fluid, but also can be used for testing multilayer insulant, to obtain
Various performance parameters are obtained, can be widely applied to the weight such as military project, scientific research, refrigeration, medical treatment, aerospace, pipeline leak detection, superconducting experiment
Want field.
The present invention is achieved by the following technical solutions:
The device that multilayer insulant is tested under a kind of storage of liquid helium and liquid helium region, includes vacuum staving, the vacuum
Cover board is installed, bottom end side, which is equipped with, evacuates mouth, it is characterised in that: is provided with cylinder in the vacuum barrel body at the top of staving
The water storage type liquid nitrogen cold screen of shape structure is successively provided with liquid nitrogen bucket, insulation board, upper protection in the cold screen of liquid nitrogen from top to bottom
Gallbladder measures gallbladder, lower protection gallbladder and absorbent packet, is connected separately with liquid nitrogen inlet tube and nitrogen on the vacuum staving and liquid nitrogen bucket
Liquid helium inlet tube, helium muffler and liquidometer installing pipe, institute are connected separately on muffler, the upper protection gallbladder and measurement gallbladder
State liquid nitrogen bucket liquid nitrogen inlet tube and nitrogen muffler and it is upper protection gallbladder and measure gallbladder on liquid helium inlet tube, helium muffler
Be each passed through cover board with the upper end of liquidometer installing pipe and be fixed on cover board upper surface, the cold screen of the liquid nitrogen, liquid nitrogen bucket, on
It protects on the lateral wall of gallbladder, measurement gallbladder, lower protection gallbladder and the upper plane of insulation board is enclosed with multilayer insulant respectively.
The upper port of the vacuum staving is cooperated by flange and cover board, and O-ring seal is equipped between it, described
Cover board be equipped with for installing liquid nitrogen inlet tube, nitrogen muffler, liquid helium inlet tube, helium muffler, thermometer, liquidometer
With the mounting hole of valve, the vacuum staving surrounding is equipped with the lifting lug for lifting by crane handling, vacuum staving upper end side
Vacuum gauge is installed on wall.
The cold screen of the liquid nitrogen is erected in vacuum barrel body by the support frame of its bottom end, and support frame as described above is by stainless steel
It is formed with G10 material, multiple spaced setting elements, institute is distributed between side wall in the cold screen of the liquid nitrogen and vacuum barrel body
Stating setting element is G10 material.
The liquid nitrogen inlet tube and nitrogen muffler and liquid helium inlet tube and helium muffler are two groups, are respectively included
There are liquid nitrogen inlet tube one and nitrogen muffler one, liquid nitrogen inlet tube two and liquid nitrogen muffler two, liquid helium inlet tube one and helium to return
Tracheae one, liquid helium inlet tube two and liquid helium muffler two, and liquid nitrogen inlet tube two, liquid helium inlet tube one and liquid helium inlet tube two
On be separately installed with pressure gauge and safety valve.
Upper port between the cold screen of the liquid nitrogen and vacuum staving is connected with liquid nitrogen inlet tube one and nitrogen muffler one,
The outer end of the liquid nitrogen inlet tube one and nitrogen muffler one is external across vacuum barrel body sidewall stretching vacuum barrel, and the liquid nitrogen is cold
Bottom end in screen is equipped with absorbent packet, and the absorbent packet is provided with adsorbent, and the adsorbent is aluminium oxide or active carbon.
The liquid nitrogen bucket is lifted at the upper end port of the cold screen of liquid nitrogen by liquid nitrogen inlet tube two and liquid nitrogen muffler two.
The insulation board is installed between liquid nitrogen bucket and upper protection gallbladder, and upper plane wraps multilayer heat insulation, insulation board
Material is copper.
The upper protection Hymecromone crosses liquid helium inlet tube one and liquid helium muffler one is lifted on the middle part of the cold screen of liquid nitrogen, it is described on
It protects and is configured with liquidometer in gallbladder, the liquidometer protrudes into the inside of upper protection gallbladder via an independent liquidometer installing pipe,
The lower protection Hymecromone is crossed connecting tube and is connect with upper protection gallbladder.
The measurement Hymecromone crosses liquid helium inlet tube two and helium muffler two is lifted in the cold screen of liquid nitrogen, and is located at upper and lower
It protects between gallbladder, liquidometer is configured in the measurement gallbladder, the liquidometer is protruded into via an independent liquidometer installing pipe
Measure the inside of gallbladder.
Its principle is: the vacuum staving is vacuumized to obtain the environment (10 of a vacuum by molecule pump assembly-3Pa or
It is more excellent), install two vacuum gauges (Pirani gauge and ionization gauge) can real-time monitoring staving vacuum degree, liquid nitrogen enters liquid from inlet
The cold screen of nitrogen and liquid nitrogen bucket, and store in cold screen and liquid nitrogen bucket, the nitrogen evaporated is discharged into atmosphere by nitrogen gas returning port；Liquid
It is wrapped in multilayer heat insulation on the outside of the cold screen of nitrogen and liquid nitrogen bucket to reduce the radiant heat transfer from Environmental Heat Source, the cold screen of liquid nitrogen and liquid nitrogen
Bucket combination obtains the environment that a temperature is 77K；Liquid helium from inlet enter protection gallbladder and measurement gallbladder, and store protection gallbladder and
It measures in gallbladder, the helium evaporated is recycled by helium muffler, and realization recycles, wherein upper protection gallbladder and measurement gallbladder are equal
The real-time measurement to liquid level is realized equipped with liquidometer.Multilayer heat insulation is wrapped on the outside of upper protection gallbladder to reduce the spoke of external heat source
Penetrate, being wrapped in outside measurement gallbladder needs multilayer heat insulation to be tested, by measure obtained helium gas flow, multilayer heat insulation thermal boundary and
The parameters such as the temperature on cold boundary can acquire the performance parameters such as apparent thermal conductivity and the heat flow of multilayer heat insulation.Into vacuum barrel body
The gas evacuated discharge can will be not easy by being filled with hot nitrogen in staving, and the absorption in absorbent packet possesses better absorption to nitrogen
Ability.Insulation board is for reducing longitudinal heat transfer of the external heat source to protection gallbladder.
The invention has the advantages that
1, the present invention provides a kind of energy-efficient cryogenic fluid storage and multilayer insulant measuring device, by internal measurement gallbladder
It is lifted under cover board, lifting cover board can replace the multilayer insulant of test, can also carry out a series of behaviour to inside
Make, it is convenient and flexible.
2, due to using materials and the structures such as the cold screen of liquid nitrogen, liquid nitrogen bucket, insulation board, G10, this device, which greatly reduces, to be come
From the heat transfer of external heat source, the consumption of liquid helium is reduced.
3, the cold screen of the liquid nitrogen of device is equipped with setting element, in order to preferably position and limit in assembly.
4, it is surveyed in the cold screen of liquid nitrogen and reinforcing rib is housed, intensity can be improved in reinforcing rib.
5, different according to the cryogenic liquid filled in measurement gallbladder, the performance of multilayer heat insulation under Different hypothermia warm area can be tested.
Detailed description of the invention:
Fig. 1 is main view of the invention.
Fig. 2 is right view of the invention.
Fig. 3 is top view of the invention.
Specific embodiment:
Referring to attached drawing.
The device that multilayer insulant is tested under a kind of storage of liquid helium and liquid helium region, includes vacuum staving 8, described
The top of vacuum staving 8 is equipped with cover board 3, and bottom end side, which is equipped with, evacuates mouth 12, and the evacuation mouth 12 is KF50 vacuum method
Blue interface, is provided with the cold screen 9 of water storage type liquid nitrogen of tubular construction in the vacuum staving 8, in the cold screen 9 of liquid nitrogen from top to bottom
It is successively provided with liquid nitrogen bucket 18, insulation board 16, upper protection gallbladder 15, measurement gallbladder 14, lower protection gallbladder 13 and absorbent packet 10, it is described true
Liquid nitrogen inlet tube and nitrogen muffler, the upper protection gallbladder 15 and measurement gallbladder 14 are connected separately on empty barrel body 8 and liquid nitrogen bucket 18
On be connected separately with liquid helium inlet tube, helium muffler and liquidometer installing pipe 23, the liquid nitrogen inlet tube and nitrogen of the liquid nitrogen bucket
The upper end of gas muffler and upper protection gallbladder and liquid helium inlet tube, helium muffler and liquidometer installing pipe 23 on measurement gallbladder
Be each passed through cover board and be fixed on 3 upper surface of cover board, the cold screen 9 of the liquid nitrogen, liquid nitrogen bucket 18, upper protection gallbladder 15, measurement gallbladder 14,
On the lateral wall of lower protection gallbladder 13 and the upper plane of insulation board 16 is enclosed with multilayer insulant respectively.
The upper port of the vacuum staving 8 is cooperated by flange and cover board 3, and O-ring seal is equipped between it, institute
The cover board 3 stated be equipped with for install liquid nitrogen inlet tube, nitrogen muffler, liquid helium inlet tube, helium muffler, thermometer 22,
The mounting hole of liquidometer and valve, 8 surrounding of vacuum staving are equipped with the lifting lug 17 for lifting by crane handling, the vacuum staving
Vacuum gauge (Pirani gauge 7 and ionization gauge 6) is installed on 8 upper end side walls.
The cold screen 9 of the liquid nitrogen is erected in vacuum staving 8 by the support frame 11 of its bottom end, and support frame as described above is not by
Become rusty steel and G10 material composition, and multiple spaced positioning are distributed between the cold screen 9 of the liquid nitrogen and 8 inner sidewall of vacuum staving
Element, the setting element are G10 material.
The liquid nitrogen inlet tube and nitrogen muffler and liquid helium inlet tube and helium muffler are two groups, are respectively included
There are liquid nitrogen inlet tube 1 and nitrogen muffler 1, liquid nitrogen inlet tube 2 21 and liquid nitrogen muffler 24, one 1 and of liquid helium inlet tube
Helium muffler 1, liquid helium inlet tube 2 25 and liquid helium muffler 22, and liquid nitrogen inlet tube 2 21, liquid helium inlet tube 1 with
And pressure gauge 26 and safety valve are separately installed on liquid helium inlet tube 2 25.
Upper port between the cold screen 9 of the liquid nitrogen and vacuum staving 8 is connected with liquid nitrogen inlet tube 1 and nitrogen return-air
The outer end of pipe 1, the liquid nitrogen inlet tube 1 and nitrogen muffler 1 is external across 8 side wall of vacuum staving stretching vacuum barrel,
Bottom end in the cold screen 9 of liquid nitrogen is equipped with absorbent packet 10, and the absorbent packet 10 is provided with adsorbent, and the adsorbent is oxidation
Aluminium or active carbon.
The liquid nitrogen bucket 18 is lifted on the upper end end of the cold screen 9 of liquid nitrogen by liquid nitrogen inlet tube 2 21 and liquid nitrogen muffler 24
At mouthful.
The insulation board 16 is installed between liquid nitrogen bucket 18 and upper protection gallbladder 15, and upper plane wraps multilayer heat insulation, is hidden
The material of hot plate 16 is copper.
The upper protection gallbladder 15 is lifted on the middle part of the cold screen 9 of liquid nitrogen by liquid helium inlet tube 1 and liquid helium muffler 1,
It is configured with liquidometer in the upper protection gallbladder 15, the liquidometer protrudes into upper protection via an independent liquidometer installing pipe 23
The inside of gallbladder, the lower protection Hymecromone are crossed connecting tube and are connect with upper protection gallbladder.
The measurement gallbladder 14 is lifted in the cold screen 9 of liquid nitrogen by liquid helium inlet tube 21 and helium muffler 2 24, and is located at
Between upper and lower protection gallbladder 15,13, it is configured with liquidometer in the measurement gallbladder 14, the liquidometer is via an independent liquid level
Meter installing pipe 23 protrudes into the inside of measurement gallbladder 14.
Before testing and filling cryogenic fluid, first hot nitrogen is poured into vacuum barrel body and is evacuated, realize and evacuate displacement.
Liquid nitrogen is filled in the cold screen of liquid nitrogen and liquid nitrogen bucket via liquid nitrogen transfusion pipe, is maintained in the space for surrounding the cold screen of liquid nitrogen and liquid nitrogen bucket
In the temperature of 77K.Completely cut off the radiant heat transfer in external heat source internally space.The nitrogen that evaporation generates is discharged by nitrogen gas returning port
Atmosphere, wrapped multiple insulation can reduce the evaporation capacity of liquid nitrogen on the outside of the cold screen of liquid nitrogen and liquid nitrogen bucket.Liquid helium is defeated via liquid helium
Liquid pipe is filled in measurement gallbladder, can be tested the multilayer heat insulation performance being wrapped on the outside of measurement gallbladder, be measured the helium for evaporating generation in gallbladder
Gas will be recycled by helium recovery pipe, and realization recycles.It joined insulation board between protection gallbladder and liquid nitrogen bucket, hide heat
Plate can reduce influence of the external heat source to protection but with measurement.Liquid helium is filled in protection gallbladder via On Tranofer Tube For Liquid Helium, makes to protect
The temperature that gallbladder obtains 4.2K is protected, so as to avoid external heat source from longitudinal incoming measurement gallbladder, ensure that the accurate of measurement gallbladder test
Property, be wrapped in multilayer heat insulation on the outside of measurement gallbladder, the evaporation capacity of liquid helium can be reduced, evaporate the helium of generation by helium recovery pipe into
Row recycling, realization recycle.Liquid nitrogen support frame is housed, support frame is by stainless steel and G10 material inside the end socket of vacuum staving
Composition, in turn avoids heat transfer problem while playing a supporting role.Energy-efficient cryogenic fluid storage of the invention and more
Layer heat-insulating material measuring device, reduces the energy loss of cryogenic fluid system, improves the time of cryogenic fluid storage, can be square
Just, various multilayer insulants are accurately and accurately tested, device is easily installed, and convenient for operation, it is exhausted to be applicable to different multilayers
The storage of hot material performance test and different cryogenic fluids.
In the present embodiment, the number of insulation board is 5, can be adjusted according to the variation of space and container dimensional, thus
Ensure to completely cut off as far as possible external heat source to conduct heat to the longitudinal of protection gallbladder.It joined reinforcing rib on the inside of the cold screen 9 of liquid nitrogen, cold screen can be improved
Intensity.It is 10^3 Pa or more to maintain vacuum barrel body internal pressure by seal with O ring between vacuum cylinder 8 and cover board 3
Excellent, vacuum spends difference and will affect the thermal insulation property of calorimeter and cause being largely lost for cooling capacity.Internal all containers are both needed to wrap up
Multilayer heat insulation, to reduce the radiant heat transfer of external heat source, to reduce the evaporation capacity of cryogenic fluid.
Claims (9)
1. the device that multilayer insulant is tested under a kind of liquid helium storage and liquid helium region, includes vacuum staving, described true
Cover board is installed, bottom end side, which is equipped with, evacuates mouth, it is characterised in that: is provided in the vacuum barrel body at the top of empty barrel body
The water storage type liquid nitrogen cold screen of tubular construction is successively provided with liquid nitrogen bucket, insulation board, upper protection in the cold screen of liquid nitrogen from top to bottom
Gallbladder measures gallbladder, lower protection gallbladder and absorbent packet, is connected separately with liquid nitrogen inlet tube and nitrogen on the vacuum staving and liquid nitrogen bucket
Liquid helium inlet tube, helium muffler and liquidometer installing pipe, institute are connected separately on muffler, the upper protection gallbladder and measurement gallbladder
State liquid nitrogen bucket liquid nitrogen inlet tube and nitrogen muffler and it is upper protection gallbladder and measure gallbladder on liquid helium inlet tube, helium muffler
Be each passed through cover board with the upper end of liquidometer installing pipe and be fixed on cover board upper surface, the cold screen of the liquid nitrogen, liquid nitrogen bucket, on
It protects on the lateral wall of gallbladder, measurement gallbladder, lower protection gallbladder and the upper plane of insulation board is enclosed with multilayer insulant respectively.
2. the device that multilayer insulant is tested under liquid helium storage according to claim 1 and liquid helium region, feature
Be: the upper port of the vacuum staving is cooperated by flange and cover board, and O-ring seal is equipped between it, described
Cover board be equipped with for install liquid nitrogen inlet tube, nitrogen muffler, liquid helium inlet tube, helium muffler, thermometer, liquidometer and
The mounting hole of valve, the vacuum staving surrounding are equipped with the lifting lug for lifting by crane handling, vacuum staving upper end side wall
On vacuum gauge is installed.
3. the device that multilayer insulant is tested under liquid helium storage according to claim 1 and liquid helium region, feature
Be: the cold screen of the liquid nitrogen is erected in vacuum barrel body by the support frame of its bottom end, support frame as described above by stainless steel and
Multiple spaced setting elements are distributed between side wall in the cold screen of the liquid nitrogen and vacuum barrel body in G10 material composition, described
Setting element is G10 material.
4. the device that multilayer insulant is tested under liquid helium storage according to claim 1 and liquid helium region, feature
Be: the liquid nitrogen inlet tube and nitrogen muffler and liquid helium inlet tube and helium muffler are two groups, have been respectively included
Liquid nitrogen inlet tube one and nitrogen muffler one, liquid nitrogen inlet tube two and liquid nitrogen muffler two, liquid helium inlet tube one and helium return-air
Guan Yi, liquid helium inlet tube two and liquid helium muffler two, and on liquid nitrogen inlet tube two, liquid helium inlet tube one and liquid helium inlet tube two
It is separately installed with pressure gauge and safety valve.
5. the device that multilayer insulant is tested under liquid helium storage according to claim 4 and liquid helium region, feature
Be: the upper port between the cold screen of the liquid nitrogen and vacuum staving is connected with liquid nitrogen inlet tube one and nitrogen muffler one, institute
The outer end for stating liquid nitrogen inlet tube one and nitrogen muffler one is external across vacuum barrel body sidewall stretching vacuum barrel, the cold screen of liquid nitrogen
Interior bottom end is equipped with absorbent packet, and the absorbent packet is provided with adsorbent, and the adsorbent is aluminium oxide or active carbon.
6. the device that multilayer insulant is tested under liquid helium storage according to claim 4 and liquid helium region, feature
Be: the liquid nitrogen bucket is lifted at the upper end port of the cold screen of liquid nitrogen by liquid nitrogen inlet tube two and liquid nitrogen muffler two.
7. the device that multilayer insulant is tested under liquid helium storage according to claim 1 and liquid helium region, feature
Be: the insulation board is installed between liquid nitrogen bucket and upper protection gallbladder, and upper plane wraps multilayer heat insulation, the material of insulation board
For copper.
8. the device that multilayer insulant is tested under liquid helium storage according to claim 4 and liquid helium region, feature
Be: the upper protection Hymecromone crosses liquid helium inlet tube one and liquid helium muffler one is lifted on the middle part of the cold screen of liquid nitrogen, the upper guarantor
It protects and is configured with liquidometer in gallbladder, the liquidometer protrudes into the inside of upper protection gallbladder, institute via an independent liquidometer installing pipe
It states lower protection Hymecromone and crosses connecting tube and connect with upper protection gallbladder.
9. the device that multilayer insulant is tested under liquid helium storage according to claim 4 and liquid helium region, feature
Be: the measurement Hymecromone crosses liquid helium inlet tube two and helium muffler two is lifted in the cold screen of liquid nitrogen, and is located at upper and lower protection
Between gallbladder, liquidometer is configured in the measurement gallbladder, the liquidometer protrudes into measurement via an independent liquidometer installing pipe
The inside of gallbladder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910690486.9A CN110308175B (en) | 2019-07-29 | 2019-07-29 | Device for testing multilayer heat insulation materials under liquid helium storage and liquid helium temperature zone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910690486.9A CN110308175B (en) | 2019-07-29 | 2019-07-29 | Device for testing multilayer heat insulation materials under liquid helium storage and liquid helium temperature zone |
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| CN110308175A true CN110308175A (en) | 2019-10-08 |
| CN110308175B CN110308175B (en) | 2024-02-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113390920A (en) * | 2021-06-25 | 2021-09-14 | 连云港中远海运特种装备制造有限公司 | Heat-insulating material performance testing device and testing method |
| CN117128442A (en) * | 2023-08-07 | 2023-11-28 | 北京航天试验技术研究所 | Constant-temperature constant-pressure low-temperature dewar, system and method thereof |
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