CN108645886A - Cryogen condenses the experimental provision with flow visual - Google Patents
Cryogen condenses the experimental provision with flow visual Download PDFInfo
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- CN108645886A CN108645886A CN201810550581.4A CN201810550581A CN108645886A CN 108645886 A CN108645886 A CN 108645886A CN 201810550581 A CN201810550581 A CN 201810550581A CN 108645886 A CN108645886 A CN 108645886A
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- 230000000007 visual effect Effects 0.000 title claims abstract description 29
- 238000009833 condensation Methods 0.000 claims abstract description 49
- 230000005494 condensation Effects 0.000 claims abstract description 49
- 238000005057 refrigeration Methods 0.000 claims abstract description 21
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Classifications
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- 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
- G01N25/14—Investigating or analyzing materials by the use of thermal means by using distillation, extraction, sublimation, condensation, freezing, or crystallisation
- G01N25/142—Investigating or analyzing materials by the use of thermal means by using distillation, extraction, sublimation, condensation, freezing, or crystallisation by condensation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
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- General Health & Medical Sciences (AREA)
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- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The present invention relates to cryogen flowing experiment fields, disclose a kind of experimental provision of cryogen condensation and flow visual, and the experimental provision includes：The experimental provision includes：Loop heat pipe, including closed loop are connected as the condenser and evaporator in circuit；Refrigeration machine is contacted with the condenser；And adiabatic system, by at least partly described loop heat pipe and at least partly described refrigeration machine surrounds, the at least partly light transmission of the adiabatic system, wherein, the condenser includes bottom plate and euphotic cover plate, the bottom plate is equipped with conduit, and the euphotic cover plate is bonded with the bottom plate, and condensation channel is surrounded jointly with the conduit on the bottom plate.The cryogen condensation of the present invention can visualize the condensation of cryogen and flow process with the experimental provision of flow visual, while solve the problems, such as that thermal shock, structural member coefficient of thermal expansion such as differ greatly at the structural strength brought.
Description
Technical field
The present invention relates to cryogen flowing experiment fields, more particularly to a kind of condensation of cryogen and flow visual
Experimental provision.
Background technology
Nowadays, the fields such as aerospace, superconductor technology and electronic device are quickly grown, and sub-cooled technology faces tighter
High challenge, cryogen are more and more extensive as the application field of cooling medium or heat transfer medium.Cryogen was being applied
The gas-liquid phase transitions heat transfer process such as evaporation or condensation inevitably occurs in journey, and along with low temperature gas-liquid in heat transfer process
Two-phase flow phenomenon.
Cryogenic fluid is different from the physical parameter of room temperature working medium, such as the surface tension of nitrogen, oxygen, hydrogen cryogenic fluid, vaporization
Latent heat is much smaller than room temperature working medium such as water, ammonia, freon, so that the flowing of cryogenic fluid has with heat transfer process and room temperature working medium
Very big difference, the actual physical process that many empirical equations established based on room temperature working medium can not be under accurate description low temperature, therefore
The gas liquid two-phase flow and heat transfer characteristic being directed under low temperature environment is needed to be furtherd investigate.The gas liquid two-phase flow of cryogen
There is complicated problem in science, including gas-liquid interface and two phase flow signals variation, gas-liquid distribution and flowing resistance with heat transfer process
The problems such as force characteristic, usually moves Cryogenic two-phase flows using numerical simulation and laboratory facilities and heat exchange is studied, due to
The problem in science of this work is complicated, and numerical simulation is difficult to carry out accurate description to it, by experimental study to its course of work
It is analyzed and is explored and is more intuitive and reliable.
During experimental study, in order to grasp gas-liquid interface and the two phase flow signals change in the condensation process of low temperature microchannel
Change, gas-liquid distribution situation, needs to be observed by visualization means, it is therefore desirable to develop visual test device.It is low
Temperature visualization element is usually transparent non-metallic material, due to being contacted with cryogen, not only to meet visualization requirements, also want
It can bear the thermal shock that low temperature, room temperature alternately change；Visualization element is connected and fixed with metal material, is due to thermally expanding
Number differs greatly, sealing difficulty bigger under low temperature, or even visualization element can be broken；Visualization element will also meet resistance to height
Pressure request.In addition, due to the limitation of low temperature seal and material requirements, traditional pump drive can not use at low ambient temperatures,
Generally rely on gravity driving gas-liquid two-phase Working fluid flow, it has not been convenient to carry out the research of horizontal direction two-phase flow, it is also not square
Just flow velocity adjusting is carried out.These problems bring huge challenge to the structure design and insulated design of low temperature visualization device.
Invention content
(1) technical problems to be solved
The object of the present invention is to provide a kind of experimental provisions of cryogen condensation and flow visual, are used for low temperature stream
The condensation of body is visualized with flow process, solves thermal shock, the structural strength that structural member coefficient of thermal expansion, which differs greatly, etc. brings
Problem, while solving the flow driving of cryogen and flow velocity regulation problem in the case where not depending on pump or gravity.
(2) technical solution
In order to solve the above technical problem, the present invention provides the experiment dresses of a kind of condensation of cryogen and flow visual
It sets, the experimental provision includes：Loop heat pipe, including closed loop are connected as the condenser and evaporator in circuit；Refrigeration machine, and it is described
Condenser contacts；And adiabatic system, will at least partly described loop heat pipe and at least partly the refrigeration machine surrounds, it is described
At least partly light transmission of adiabatic system, wherein the condenser includes bottom plate and euphotic cover plate, and the bottom plate is equipped with slot
Road, the euphotic cover plate are bonded with the bottom plate, and condensation channel is surrounded jointly with the conduit on the bottom plate.
Preferably, one side of the bottom plate towards the euphotic cover plate is equipped with the first groove, and the euphotic cover plate is placed in institute
It states in the first groove, there are predetermined gaps between the inner peripheral surface and the edge of the euphotic cover plate of first groove.
Preferably, low temperature glue is filled in the gap.
Preferably, the condenser further includes：Fixed plate, the central part opening of the fixed plate, peripheral portion is by institute
The edge for stating euphotic cover plate is fixed on the bottom plate.
Preferably, one side of the fixed plate towards the euphotic cover plate is equipped with the second groove, is set in second groove
Set gasket.
Preferably, the conduit on the bottom plate is serpentine-like or spiral yarn shaped.
Preferably, the loop heat pipe further includes：The condenser is connect by liquid line with the evaporator；Gas
The evaporator is connect by pipeline with the condenser；Air reservoir is connect with the gas piping.
Preferably, the adiabatic system includes：Vacuum (-tight) housing is cylindrical in shape；Bottom head covers and top end cover are separately positioned on institute
The bottom end and top for stating vacuum (-tight) housing, jointly will at least partly described loop heat pipe and at least partly described system with the vacuum (-tight) housing
Cold is surrounded, wherein the second window that the top end cover is equipped with the first window for observation and enters for external light source
Mouthful, the position of the first window is corresponding with the position of the condenser.
Preferably, the first window and second window include：Window pedestal is fixed with the top end cover；
Light-transmitting plate；And connection cover, the connection cover fix the light-transmitting plate and the window pedestal, the light-transmitting plate and the window
Sealing ring is set between mouth pedestal.
Preferably, tapered opening is arranged back to the side of the light-transmitting plate in the window pedestal of second window.
(3) advantageous effect
According to the experimental provision of cryogen provided by the invention condensation and flow visual, the adiabatic system is at least
Partial light permeability, the condenser include euphotic cover plate, and the condensation process of cryogen is visualized.By the gas in loop heat pipe
Liquid two-phase moves the visual research that phenomenon carries out cryogenic temperature condensation process, transfer tube is arranged without dependence gravity or additionally,
It is flowed, is not limited by Working fluid flow direction using the capillarity driving gas-liquid two-phase working medium circulation in evaporator.Circuit heat
Pipe is closed device, flows into, outflow, does not discharge externally, by adjusting evaporator heating amount without working medium during experiment
Size can advantageously carry out the adjusting of refrigerant flow rate, by adjusting working medium charging amount and/or adjusting evaporator heating amount, energy
It is enough to adjust and change the saturation pressure and temperature in condensation process, carry out the research of cryogenic temperature condensation process under different operating modes.In addition
It can be provided for the condensation process of the wider operation temperature area cryogenic fluid of research cold as low-temperature receiver using Cryo Refrigerator in the present invention
But.
Condenser includes euphotic cover plate and bottom plate, and euphotic cover plate is bonded with bottom plate, to total with the conduit on the bottom plate
With condensation channel is surrounded, the sealing structure difficulty of above-mentioned condenser reduces, and can solve the condenser of conventional visualization due to cold
Thermal shock, structural member coefficient of thermal expansion such as differ greatly at the structural strength problem brought.
In a preferred embodiment, one side of the bottom plate towards the euphotic cover plate is equipped with the first groove, the light transmission
Cover board is placed in first groove, and there are between predetermined between the inner peripheral surface and the edge of the euphotic cover plate of first groove
Gap further can fill low temperature glue for buffering the expansion or shrinkage deformation between bottom plate and euphotic cover plate in the gap.
In addition the condenser further includes fixed plate, and one side of the fixed plate towards the euphotic cover plate is equipped with the second groove, described
Gasket is set in the second groove.The bottom plate and euphotic cover plate circumferential direction cooperation position prepsetting gap of above-mentioned condenser simultaneously fill low temperature
Glue, then fixed by fixed plate attachment screw fastening means, it effectively avoids high/low temperature variation from damaging condenser, passes through pad
Piece is alleviated between fixed plate, euphotic cover plate and trip bolt because of expansion caused by coefficient of thermal expansion difference, the influence of contraction, into
One step improves condenser sealing and voltage endurance capability.
In a preferred embodiment, the top end cover of adiabatic system is equipped with for the first window of observation and for outside
Tapered opening, energy is arranged back to the side of the light-transmitting plate in the window pedestal of the second window that light source enters, second window
Enough make second window size compacter, the angle that light enters adiabatic system is wider, ensures that the light that light source is sent out smoothly is penetrated
To the euphotic cover plate of condenser.
Description of the drawings
Fig. 1 is that the cryogen condensation of the embodiment of the present invention and the cross section structure of the experimental provision of flow visual are illustrated
Figure；
Fig. 2 is the stereogram exploded view of the cryogen condensation and the experimental provision of flow visual of the embodiment of the present invention；
Fig. 3 is the solid of the cryogen condensation and the loop heat pipe of the experimental provision of flow visual of the embodiment of the present invention
Figure；
Fig. 4 shows the section of the cryogen condensation and the condenser of the experimental provision of flow visual of the embodiment of the present invention
Structural schematic diagram；
Fig. 5 shows cryogen condensation and the condenser bottom plate of the experimental provision of flow visual of the embodiment of the present invention
Vertical view；
Fig. 6 shows the section of the cryogen condensation and the evaporator of the experimental provision of flow visual of the embodiment of the present invention
Structural schematic diagram；
Fig. 7 shows the cryogen condensation of the embodiment of the present invention and cutting for the top end cover of the experimental provision of flow visual
Face structural schematic diagram.
Specific implementation mode
With reference to the accompanying drawings and examples, the specific implementation mode of the present invention is described in further detail.Following instance
For illustrating the present invention, but it is not limited to the scope of the present invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
The present invention provides a kind of experimental provision of cryogen condensation and flow visual, is used for the flowing of cryogen
Process and condensation process visualization.Cryogen condensation and the flow visual of the embodiment of the present invention is shown respectively in Fig. 1 and Fig. 2
The cross section structure schematic diagram and stereogram exploded view of experimental provision.Cryogen is condensed to be included back with the experimental provision of flow visual
Road heat pipe 100, refrigeration machine and adiabatic system.
Fig. 3 is cryogen condensation and the loop heat pipe 100 of the experimental provision of flow visual of the embodiment of the present invention
Stereogram.Loop heat pipe 100 includes the condenser 110 and evaporator 120 that closed loop is connected as circuit.
Refrigeration machine can be pulse tube refrigerating machine, sterlin refrigerator, GM refrigeration machines or its Cryo Refrigerator, with condensation
Device 110 contacts.
Adiabatic system will at least partly loop heat pipe 100 and at least partly refrigeration machine surrounds, the adiabatic system of the present embodiment
At least partly light transmission of system.
Fig. 4 shows cryogen condensation and the condenser 110 of the experimental provision of flow visual of the embodiment of the present invention
Cross section structure schematic diagram, condenser 110 include bottom plate 111 and euphotic cover plate 112, and Fig. 5 shows the vertical view of bottom plate 111, bottom
Plate 111 is equipped with conduit 1111, and euphotic cover plate 112 is bonded with bottom plate 111, is surrounded jointly with the conduit 1111 on bottom plate 111 cold
Solidifying channel.
Conduit 1111 on bottom plate 111 can be serpentine-like or spiral yarn shaped.The cross section of conduit 1111 in the present embodiment
Cross section for rectangle, the condensation channel of formation is also rectangle.In other embodiments, it can also open up and cut on bottom plate 111
Face is the conduit 1111 of V-type, constitutes the condensation channel that section is triangle with euphotic cover plate 112, or in bottom plate 111 and light transmission
It is semicircular conduit to open up section on cover board 112 respectively, and Formation cross-section is circular condensation channel after assembling, and can also be set
It is calculated as other cross sectional shapes.
According to the experimental provision of cryogen provided by the invention condensation and flow visual, adiabatic system is at least partly
Light transmission, condenser 110 include euphotic cover plate 112, and the condensation process of cryogen is visualized.By in loop heat pipe 100
Gas liquid two-phase flow phenomenon carries out the visual research of cryogenic temperature condensation process, is driven without relying on gravity or being additionally arranged
Pump is flowed using the capillarity driving gas-liquid two-phase working medium circulation in evaporator 120, is not limited by Working fluid flow direction.
Loop heat pipe 100 is closed device, flows into, outflow, does not discharge externally, by adjusting evaporation without working medium during experiment
120 heating amount size of device can advantageously carry out the adjusting of refrigerant flow rate, be evaporated by adjusting working medium charging amount and/or adjusting
120 heating amount of device can adjust and change the saturation pressure and temperature in condensation process, carry out cryogenic temperature condensation mistake under different operating modes
The research of journey.In addition it uses Cryo Refrigerator as low-temperature receiver in the present invention, can be to study wider operation temperature area cryogenic fluid
Condensation process provides cooling.
Condenser 110 includes euphotic cover plate 112 and bottom plate 111, and euphotic cover plate 112 is bonded with bottom plate 111, thus and bottom plate
Conduit 1111 on 111 surrounds condensation channel jointly, and the sealing structure difficulty of above-mentioned condenser 110 reduces, and can solve tradition
The structural strength problem that visual condenser 110 is brought since thermal shock, structural member coefficient of thermal expansion differ greatly etc..
Further, one side of the bottom plate 111 towards euphotic cover plate 112 is equipped with the first groove 1112, and euphotic cover plate 112 is placed in
In first groove 1112, predetermined gap can be set between the inner peripheral surface and the edge of euphotic cover plate 112 of the first groove 1112, it should
Low temperature glue 114 may further be filled in gap, by the way that gap or low temperature glue 114 is arranged in bottom plate 111 and euphotic cover plate 112,
Bottom plate 111, euphotic cover plate 112 can be alleviated because of expansion, effect of contraction caused by coefficient of thermal expansion difference, improve condenser 110
Sealing performance and structural strength.
This external condenser 110 further includes fixed plate 113, the central part opening of fixed plate 113, and peripheral portion is by euphotic cover
The edge of plate 112 is fixed on bottom plate 111.Further, it is recessed to be equipped with second for one side of the fixed plate 113 towards euphotic cover plate 112
Slot 1131,1131 interior setting gasket 115 of the second groove.
In embodiments of the present invention, the bottom plate 111 of condenser 110 and the circumferential cooperation position prepsetting gap of euphotic cover plate 112
And low temperature glue 114 is filled, then fixed by 113 attachment screw fastening means of fixed plate, effectively avoid high/low temperature variation to condensation
Device 110 damages, and is alleviated between fixed plate 113, euphotic cover plate 112 and trip bolt because of coefficient of thermal expansion by gasket 115
Expansion, the influence shunk caused by different, further increase 110 sealing performance of condenser and voltage endurance capability.
In the present embodiment, loop heat pipe 100 further includes liquid line 130, gas piping 140, air reservoir 150.Liquid line
Condenser 110 is connect by road 130 with evaporator 120, and evaporator 120 is connect by gas piping 140 with condenser 110, air reservoir 150
It is connect with gas piping 140.Condenser 110, liquid line 130, evaporator 120, gas piping 140 are sequentially connected with composition circuit
Structure, air reservoir 150 are connected by air reservoir connecting leg 151 and threeway 152 with gas piping 140.Air reservoir 150 is for alleviating circuit heat
Pipe 100 at ambient temperature hypertonia the problem of, design can be required according to gas-liquid ratio under low temperature environment and operating pressure
150 size of air reservoir.Liquid line 130, gas piping 140 can be made of thin-wall metal pipe, according to system requirements and space cloth
Pipeline can also be bent by office's situation design parameters such as length of pipe and diameter for example, in order to keep cryogenic system compacter
U-shaped structure.In the present embodiment, the inflating port 160 of loop heat pipe 100 is arranged on air reservoir 150, passes through external pipeline and valve
It is connect with inflating port 160, cryogenic fluid is filled into loop heat pipe 100.
Fig. 6 shows cryogen condensation and the evaporator 120 of the experimental provision of flow visual of the embodiment of the present invention
Cross section structure schematic diagram may include capillary structure 121, shell 122, inlet end cap in the evaporator 120 of loop heat pipe 100
125 and outlet end cap 126, shell 122 forms cavity with inlet end cap 125, outlet end cap 126, and capillary structure 121 is used as imbibition
Core is set to inside shell 122, and several gas conduits 123 are equipped between 122 inner wall of 121 outer surface of capillary structure and shell, make hair
The gas working medium that 121 surface evaporation of fine texture comes out to 140 dissipation of gas piping, is made in time by the capillary of capillary structure 121
Driving force is provided with for working medium circulation flowing in circuit, needs not rely on pump or gravity, therefore the present invention can be used in sky
Between carry out cryogenic temperature condensation process visual research.Liquid storage device 124 can also be arranged in evaporator 120, and liquid storage device 124 may be used
The heat conduction such as red copper system may be used in stainless steel, titanium or the smaller metal material of other thermal coefficients, the shell 122 of evaporator 120
The larger material of number, setting transition annulus is welded between liquid storage device 124 and shell 122, liquid storage device 124 and capillary structure
It is connected inside 121, for storing excessive liquid working substance, control and the leakage heat for adjusting evaporator 120, improves evaporator 120
Secondary capillary structure (not shown) can be arranged in operation stability between liquid storage device 124 and capillary structure 121, convenient for storage
Liquid in liquid device 124 to supplement inside capillary structure 121 and flows.
The adiabatic system of the present embodiment includes vacuum (-tight) housing 310, bottom head covers 320 and top end cover 330.Vacuum (-tight) housing 310 is in
Tubular, bottom head covers 320 and top end cover 330 are separately positioned on the bottom end and top of vacuum (-tight) housing 310, common with vacuum (-tight) housing 310
It incites somebody to action at least partly loop heat pipe 100 and at least partly refrigeration machine surrounds.Wherein, top end cover 330 is equipped with for observation
First window 331 and the second window 332 entered for external light source, the position of the position and condenser 110 of first window 331
It is corresponding.
Vacuum interface 311 and pin interfaces 312 are offered on vacuum (-tight) housing 310, by vacuum interface 311 by vacuum (-tight) housing 310
It is connected with vacuum pump set, by pin interfaces 312 by the internal such as lead of thermometer, adding thermal resistance and external acquisition system
It is connected.The upper and lower ends of vacuum (-tight) housing 310 are respectively equipped with flange and seal groove, and rubber ring is used in the seal groove of vacuum (-tight) housing 310
Or polytetrafluoroethylene gasket sealing, it is fastened by screw between bottom head covers 320, top end cover 330.
Fig. 7 shows the top end cover 330 of the cryogen condensation and the experimental provision of flow visual of the embodiment of the present invention
Cross section structure schematic diagram, first window 331 and the second window 332 include window pedestal 3301, light-transmitting plate 3302 and even
Connect lid 3303.Window pedestal 3301 is fixed with top end cover 330, and connection cover 3303 consolidates light-transmitting plate 3302 and window pedestal 3301
It is fixed, sealing ring 3304 is set between light-transmitting plate 3302 and window pedestal 3301, window pedestal 3301 towards light-transmitting plate 3302 one
Seal groove can be arranged in side, for accommodating above-mentioned sealing ring 3304.
High-speed camera can shoot with video-corder condensation process gas-liquid two-phase Working fluid flow in condenser 110 by first window 331
State.External light source, which can be entered by the second window 332 in adiabatic system, to be radiated on condenser 110.Second window 332
Tapered opening can be arranged back to the side of light-transmitting plate 3302 in window pedestal 3301, and 332 size of the second window can be made more to step up
It gathers, the angle that light enters adiabatic system is wider, ensures the euphotic cover plate of the smooth directive condenser of light that light source is sent out 110
112。
In top end cover 330, first window 331 can be convex towards direction of the top end cover 330 towards loop heat pipe 100
Go out, shortens first window 331 at a distance from condenser 110, be more advantageous to high-speed camera and shot.Second window, 332 court
It is protruded to top end cover 330 backwards to the direction of loop heat pipe 100, the second window 332 and first window 331 are in top end cover 330
On distance can be opposite closer to in the case where ensureing that the light of light source is smoothly irradiated to condenser 110, make second
The opening size of window 332 can be compacter.
As previously mentioned, refrigeration machine can be any in a variety of refrigeration machines, carried out by taking pulse tube refrigerating machine as an example herein
Explanation comprising cold head 210, cold finger 220 and compressor connecting leg 230, cold head 210 are located in adiabatic system, and with condensation
Device 110 contacts, and cold head 210 passes sequentially through cold finger 220 and compressor connecting leg 230 and connect with the compressor in the adiabatic system external world.
In the present embodiment, refrigeration machine is arranged in the bottom head covers 320 of adiabatic system, hot junction of the bottom head covers 320 as refrigeration machine, uses
It radiates in refrigeration machine, wherein cold head 210, cold finger 220 are located in adiabatic system, the cold head 210 of 110 bottom of condenser and refrigeration machine
It is connected by screw or low temperature glue sticking is tightly fastened.Flange 321 can also be arranged in the edge of bottom head covers 320, for it is true
Sky cover 310 connection, experimental provision can also include holder 400, holder can also with flange 321, at the bottom of entire experimental provision
Portion supports and fixes the offer of entire experimental provision.
Furthermore, it is possible in the bottom plate 110 of loop heat pipe 100,110 inlet and outlet position of condenser, evaporator 120, system
Thermometer is respectively set on the cold head 210 of cold, monitoring temperature changes during the test.Heating is set on evaporator 120
Device makes 121 surface of capillary structure generate capillarity, working medium circulation in driving circuit heat pipe 100 by heating evaporation device 120
Flowing.
Aluminium plating terylene film multilayer is wound in 220 outer surface of cold finger of loop heat pipe 100, refrigeration machine, makes condenser 110
112 region of euphotic cover plate keeps exposed, reduces external environment and leaks heat to the environment of internal system, while not influencing to condenser
110 observation process.
Cold screen can also be set in vacuum (-tight) housing 310, and cold screen surrounds the cold finger 220 of loop heat pipe 100, refrigeration machine
Come, cold screen is not contacted with the cold finger 220 of loop heat pipe 100, refrigeration machine, is avoided conductive force from causing leakage heat, is wound on cold screen
Aluminium plating terylene film multilayer corresponds to the region of first window 331 and the second window 332 on cold screen and multilayer aluminium plating terylene film
Setting opening, ensures the euphotic cover plate 112 of the smooth directive condenser of the light of light source 110, and keeps high-speed camera smooth
Shoot with video-corder the Liquid Flow process inside condenser 110.In addition, setting is stretched out for thermometer lead, heating wires on cold screen
Opening, make lead pass through opening connect with the pin interfaces 312 on vacuum (-tight) housing 310 across cold screen.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (10)
1. the experimental provision of a kind of cryogen condensation and flow visual, which is characterized in that the experimental provision includes：
Loop heat pipe, including closed loop are connected as the condenser and evaporator in circuit；
Refrigeration machine is contacted with the condenser；And
Adiabatic system, will at least partly described loop heat pipe and at least partly the refrigeration machine surrounds, the adiabatic system
At least partly light transmission,
Wherein, the condenser includes bottom plate and euphotic cover plate, and the bottom plate is equipped with conduit, the euphotic cover plate with it is described
Bottom plate is bonded, and condensation channel is surrounded jointly with the conduit on the bottom plate.
2. experimental provision as described in claim 1, which is characterized in that one side of the bottom plate towards the euphotic cover plate is equipped with
First groove, the euphotic cover plate are placed in first groove, inner peripheral surface and the euphotic cover plate of first groove
There are predetermined gaps between edge.
3. experimental provision as claimed in claim 2, which is characterized in that fill low temperature glue in the gap.
4. experimental provision as described in claim 1, which is characterized in that the condenser further includes：
The edge of the euphotic cover plate is fixed on the bottom by fixed plate, the central part opening of the fixed plate, peripheral portion
On plate.
5. experimental provision as claimed in claim 4, which is characterized in that the fixed plate setting on one side towards the euphotic cover plate
There is the second groove, gasket is set in second groove.
6. experimental provision as described in claim 1, which is characterized in that the conduit on the bottom plate is serpentine-like or spiral yarn shaped.
7. experimental provision as described in claim 1, which is characterized in that the loop heat pipe further includes：
The condenser is connect by liquid line with the evaporator；
The evaporator is connect by gas piping with the condenser；
Air reservoir is connect with the gas piping.
8. experimental provision as described in claim 1, which is characterized in that the adiabatic system includes：
Vacuum (-tight) housing is cylindrical in shape；
Bottom head covers and top end cover are separately positioned on the bottom end and top of the vacuum (-tight) housing, jointly near with the vacuum (-tight) housing
Loop heat pipe described in small part and at least partly described refrigeration machine surround,
Wherein, the second window that the top end cover is equipped with the first window for observation and enters for external light source, institute
The position for stating first window is corresponding with the position of the condenser.
9. experimental provision as claimed in claim 8, which is characterized in that the first window and second window include：
Window pedestal is fixed with the top end cover；
Light-transmitting plate；And
Connection cover, the connection cover fix the light-transmitting plate and the window pedestal, the light-transmitting plate and the window pedestal
Between sealing ring is set.
10. experimental provision as claimed in claim 9, which is characterized in that the window pedestal of second window is back to described
Tapered opening is arranged in the side of tabula rasa.
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| CN113030154A (en) * | 2021-03-05 | 2021-06-25 | 上海交通大学 | Villiaumite flowing solidification behavior simulation experiment system |
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