CN106568794A - Low temperature refrigerating machine-based visual experiment observation apparatus of controlled liquefaction and solidification process of fluid - Google Patents
Low temperature refrigerating machine-based visual experiment observation apparatus of controlled liquefaction and solidification process of fluid Download PDFInfo
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- CN106568794A CN106568794A CN201610964667.2A CN201610964667A CN106568794A CN 106568794 A CN106568794 A CN 106568794A CN 201610964667 A CN201610964667 A CN 201610964667A CN 106568794 A CN106568794 A CN 106568794A
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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
- G01N25/02—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering
Abstract
A low temperature refrigerating machine-based visual experiment observation apparatus of the controlled liquefaction and solidification process of a fluid comprises a visual experiment unit, a low temperature fluid inflation and deflation unit, a vacuum system, a temperature control unit, a temperature measurement and acquisition system and a low temperature refrigerating machine unit, the visual experiment unit comprises a quartz glass sample bottle, a fin type heat exchanger and an adapter flange and is connected with the cold head of the low temperature refrigerating machine through the adapter flange in order to cool a low temperature fluid in the quartz glass sample bottle, the tail end of the low temperature refrigerating machine unit is connected with a gas bag or a vacuum pumping molecular pump, and the vacuum system utilizes the molecular pump to form the vacuum in the internal spaces of the quartz glass sample bottle and a vacuum bottle. The apparatus realizes visualization of the liquefaction and solidification process of the low temperature fluid, solves the experiment contradiction between the visualization and the influence of frosting and condensation on observation at a low temperature, has a simple structure, is convenient to operate, can be effectively used for researching the liquefaction and solidification characteristics of various low temperature fluids at a controllable temperature.
Description
Technical field
The present invention relates to the visualization technique field of liquefaction and process of setting characteristic of the cryogen under controllable temperature, closes
Key is solved while meeting the low temperature environment and the technical contradiction for visualizing two aspect requirements of cryogenic fluid liquefaction or solidification.
Background technology
Volume-diminished is gaseous 1/600 or so after natural gas liquefaction, is conducive to tank car, the long-distance transportation of groove ship, its
The condensing temperature of each component differs, and the liquefaction property of gas-liquid mixture is complicated.And for example high-temperature superconductive cable mostly adopts supercooled liquid
Nitrogen cools down and maintains low temperature environment, its supercooled state generally to be realized by Cryo Refrigerator or evacuation decompression method, too low temperature
Or pressure is likely to so that liquid nitrogen solidification.For another example the liquid hydrogen/oxygen low temperature of conventional toxic missile propellant is just progressively replaced
Liquid propellant, either ground supercooling is added or hydrogen slurry storage, the phase transformation between being directed to liquid admittedly.In above-mentioned application neck
Domain, it is special it is necessary to the flow morphology after understanding the liquefaction property of cryogen, liquefying and liquid-solid-phase changeable (solidification and fusing)
Property.Due to cryogenic fluid liquefaction point and freezing point temperature it is all very low, under controlled conditions observe fluid liquefaction and solidification
Process brings difficulty.Liquid form after different cryogens its liquefaction, and the again phase not to the utmost of the solid forms after solidification
Together, contribute to understanding the general character mechanism and difference characteristic of gas-liquid and solid-liquid phase change by visual inspection, and this needs to have peace
Entirely, conveniently, reliability and the associated visualization observation experiment device of repeatable operation.
Find through the retrieval of prior art,
The patent of Authorization Notice No. CN204791758U discloses a kind of OO cryogenic condensation visualized experiment dress
Put, including vacuum tank, and the condensing unit and reboiler being arranged in vacuum tank；Reboiler is used to provide the steaming of heat transferring medium
Vapour, steam is recycled to generation gas-liquid in condensing unit and changes and by visual optical window and filming apparatus Real-time Collection through liquid back pipe
View data.But the cryogenic condensation visual experimental apparatus cannot be observed to solidification (liquid-solid-phase changeable) process of cryogen
Record；And its cold derives from low temperature liquid storage tank, continuous temperature interior on a large scale is difficult to realize for Cryo Refrigerator
Adjust and precise control.
The patent of application publication number CN104634537U discloses a kind of visualization suitable for the blending of low temperature gas-liquid two-phase
Experimental provision, including upper adapter pipe, lower mouthpiece tube, gas access tube, upper-lower seal flange frock, connecting screw rod and ectonexine
Glass tube and vacuum-pumping tube；The mixed flow of cryogen and gas is carried out in inner layer glass tube, high-speed camera is then through interior
Outer glass pipe shoots to the phenomenon in inner layer glass tube.The cryogen of the device needs directly to provide cold conditions stream by outside
Body, and the temperature of uncontrollable its internal two-phase fluid, it is cold with less solidify cryogenic gas liquefaction or cryogenic liquid
Source condition, is not suitable for the controlled research of the visualization of cryogenic fluid liquefaction and solidification.
For another example document " Condensation studies of saturated nitrogen vapors " (Cryogenic
Engineering,1970,15:308) disclose in nitrogen vertical out-tubular condensing experiment, using be stored in liquid nitrogen storage tank and with
Connected vertical oxygen-free copper pipe in liquid nitrogen as low-temperature receiver.Document " Laminar film condensation heat
transfer of hydrogen and nitrogen inside a vertical tube“(Heat Transfer-Asian
Research,2001,30(7):Nitrogen disclosed in 542-560)/liquefaction of hydrogen condensation test device is with two-stage G-M refrigeration machine as cold
Source, the condenser pipe of one end closing is fixed on cryocooler cold head, and condenser pipe is connected with cryogenic gas, so as to realize low temperature
Gas liquefies on cryocooler cold head.But the experimental provision is only capable of obtaining liquefaction effect and fluid product, it is impossible to realize to low
The liquefaction of warm fluid and the visualized observation of process of setting.Jing retrieval find, not yet have based on Cryo Refrigerator, can be right
Fluid liquefaction and process of setting carry out visualizing the experimental observation device of controlled research.
The content of the invention
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, there is provided a kind of fluid based on Cryo Refrigerator is received
Control liquefaction and process of setting visualized experiment observation device, for demonstrating and observing liquid of the various cryogens under controllable temperature
Change and process of setting and characteristic.
The present invention can be achieved through the following technical solutions：
A kind of fluid based on Cryo Refrigerator is controlled to liquefy and process of setting visualized experiment observation device, including visual
Change experiment chamber unit, cryogen inflation/deflation unit, vacuum system, control temperature unit, temperature survey acquisition system and cryogenic refrigeration
Machine unit；
Described Cryo Refrigerator unit includes Cryo Refrigerator and the outer cylinder body being set in outside the Cryo Refrigerator；It is described
Cryo Refrigerator and outer cylinder body between form vacuum chamber, in the described side of outer cylinder body bottom two, be arranged with Germicidal efficacy
Window, in the side of outer cylinder body top one sealing plate is provided with, and another side in top is provided with aviation connector；
Described visualized experiment chamber unit comprising quartz glass sample bottle, ventilation edge of a knife flange, stainless steel edge of a knife flange,
Finned heat exchanger and adapter flange；Stainless steel edge of a knife flange described in the top connection of described quartz glass sample bottle,
Internal thread counterbore is provided with described ventilation edge of a knife flange, is connected with the external screw thread of described finned heat exchanger, screwed
To end face laminating；Penetrate on the described ventilation edge of a knife flange welding a piece stainless steel tube, one end of the stainless steel tube with it is described
Cryogen inflation/deflation unit is connected, and other end central through hole coaxially through the finned heat exchanger is to below；
Described ventilation edge of a knife flange realizes low temperature seal with stainless steel edge of a knife flange by copper washer and tools for bolts ' pretension；The switching method
Blue side is connected with the cold head end of Cryo Refrigerator, and opposite side is connected with described ventilation edge of a knife flange；
Stainless steel cutting ferrule that described cryogen inflation/deflation unit includes being welded on described sealing plate, stop valve and
First KF25 flange-interfaces；Described quartz glass sample bottle is by stainless steel tube successively sealed plate, stop valve and first
After KF25 flange-interfaces, the airbag valve described in Jing is led to airbags, or Jing the second vacuum valve threeways successively described in Jing
It is connected with the described molecular pump that vacuumizes；
The programmable power supply that described control temperature unit includes multi-disc stainless steel substrates, coiling heater and adjusts with PID；Institute
The wire of the coiling heater stated is connected by described aviation connector with programmable power supply, described multi-disc stainless steel substrates,
Coiling heater and described adapter flange are fixed on the cold of Cryo Refrigerator by top-down order with same bolt connection
Head end；
Described vacuum system includes vacuumizing molecular pump, the 2nd KF25 flange-interfaces, threeway；Described vacuum chamber passes through
Successively the KF25 flange-interfaces of Jing the 2nd, the second vacuum valve and threeway are connected vacuum-pumping pipeline with the described molecular pump that vacuumizes；
Described temperature survey acquisition system include quartz glass sample bottle in thermometer, cryocooler cold head end thermometer,
Data collecting instrument and computer；Thermometer passes through gold of the welding on quartz glass sample bottle in described quartz glass sample bottle
Category fine needle realizes and the electric signal transmission outside quartz glass sample bottle that described cryocooler cold head end thermometer is tight with cold head
Contact；The wire of two thermometers is connected by aviation connector with the input of the data collecting instrument of outside, the data acquisition
The output end of instrument is connected with computer.
The thickness of every described stainless steel substrates is 0.8mm.
Described coiling heater is wrapped on the red copper flange that thickness is 6mm by the manganin wire of line footpath 0.7mm, length 2m
Make.
Described adapter flange is made up of the preferable red copper material of heat conductivility.
Perforate flange is also arranged with described outer cylinder body top, described sealing plate is bolted on vacuum chamber
On perforate flange, and by rubber o-ring and described outer cylinder body vacuum sealing.
Compared with prior art, the present invention has advantages below：
(1) visualization of cryogenic fluid liquefaction and process of setting is realized, visualization is solved with frosting condensation under low temperature
Affect the experiment contradiction of observation.
(2) finned heat exchanger of integration is directly built in quartz glass sample bottle, makes gas in inflow sample bottle
Body can directly with heat exchanger fin contact heat-exchanging, greatly improve heat exchange and liquefaction efficiency.
(3) four metal fine needles of welding are sealed on the transparency silica glass in visualized experiment chamber so that in vial
Portion places slight temperature meter and is possibly realized, and the error that thermometer introducing is placed with glass outer wall is overcome, such that it is able to accurately
Measure true temperature when cryogenic fluid liquefaction or solidification.
(4) based on small-sized Cryo Refrigerator, it is convenient to obtain liquefaction or solidify institute's chilling requirement；Coordinate stainless steel thin slice and
Coiling heater, can simply and easily realize the precise control to temperature.
(5) utilization can cut down the connection for realizing metal and quartz glass, and realize low temperature ring using edge of a knife flange and copper washer
Sealing under border, dexterously connects together visualized experiment chamber with the metal cold head of Cryo Refrigerator, while ensure that good
Good thermo-contact, the technical requirements of three aspects of air-tightness and mechanical strength.
Description of the drawings
Fig. 1 is the controlled liquefaction of fluid of the present invention based on Cryo Refrigerator and process of setting visualized experiment observation device
Structural representation；
Fig. 2 is the structural representation of ventilation edge of a knife flange in the present invention；
Fig. 3 is the structural representation in visualized experiment chamber in the present invention；
Fig. 4 is the structural representation of finned heat exchanger in the present invention；
Fig. 5 is the assembling schematic diagram of visualized experiment chamber unit in the present invention；
Fig. 6 is the schematic diagram of stainless steel thin slice；
Fig. 7 is the schematic diagram of coiling heater
Fig. 8 is the schematic diagram of pad
Fig. 9 is the close-up schematic view shown in Fig. 1.
In figure, 11 quartz glass sample bottles, 12 ventilation edge of a knife flanges, the 13 flange edges of a knife, 14 screwed holes, the 15 stainless steel edges of a knife
Flange, 16 finned heat exchangers, 17 through holes, 18 external screw threads, 19 adapter flanges, 21KF25 flange-interfaces, 22 stop valves, 23 sealings
Plate, 24 air bags, 25 airbag valves, 31 vacuumize molecular pump, 32KF25 flange ports, 33 threeways, 34 first vacuum valves, and 35 second is true
Empty valve, 41 stainless steel substrates, 42 coiling heaters, 43 manganin wires, 44 programmable power supplies, thermometer in 51 quartz glass sample bottles,
52 metal fine needles, 53M3 bolts, 54 cryocooler cold head end thermometers, 55 pads, 56 aviation connectors, 57 data collecting instruments, 58
Computer, 61 Cryo Refrigerators, 62 opening flanges, 63 outer cylinder bodies, 64 vacuum chambers, 65 observation windows.
Specific embodiment
With reference to the accompanying drawings and examples the present invention is described in detail.Cryogen adopts nitrogen in the present embodiment,
Cryo Refrigerator is G-M Cryo Refrigerators.The present embodiment is implemented premised on technical solution of the present invention, gives detailed
Embodiment and specific operating process, but protection scope of the present invention is not limited to following embodiments.
Embodiment 1
A kind of controlled liquefaction of fluid based on Cryo Refrigerator of the present invention and process of setting visualized experiment observation device bag
Include visualized experiment chamber unit, cryogen inflation/deflation unit, pumped vacuum systems, control temperature unit, temperature survey acquisition system, with
And Cryo Refrigerator unit, the liquefaction under controllable temperature and process of setting characteristic for the various cryogens of observational study.
As shown in Fig. 1 to Fig. 5, visualized experiment chamber unit includes quartz glass sample bottle 11 (Fig. 3), ventilation edge of a knife flange
12 (Fig. 2), finned heat exchanger 16 (Fig. 4) and adapter flange 19 (Fig. 5).The sub-body of quartz glass sample bottle 11 is
Bright quartz glass, top is stainless steel edge of a knife flange 15, between the two by cutting down mutual transition and airtight connect as one；It is logical
Internal thread counterbore 14 is provided with air knife mouth flange 12, is connected with the external screw thread 18 on finned heat exchanger 16, be torqued-up to end
Fit in face；A piece stainless steel tube of welding is penetrated on ventilation edge of a knife flange 12, wherein one is connected with cryogen inflation/deflation unit
Logical, other end through hole 17 coaxially through the center of finned heat exchanger 16 is to below；Ventilation edge of a knife flange 12 and stainless steel
Edge of a knife flange 15 realizes low temperature seal by copper washer and tools for bolts ' pretension；Adapter flange 19 is by the preferable red copper material of heat conductivility
Make, side is connected by peripheral through holes bolt with cryocooler cold head, opposite side is by internal counter sink and ventilation knife-edge method
Blue 12 are connected.The contact plane of ventilation edge of a knife flange 12 and adapter flange 19, and finned heat exchanger 16 and the ventilation edge of a knife
The contact plane of flange 12 is coated with low temperature thermal grease conduction, to ensure that Cryo Refrigerator cold head cold can be fully to fin type heat exchange
Device 16 is cooled down.
As shown in figure 1, cryogen inflation/deflation unit by stainless steel tube, the stainless steel cutting ferrule being welded on sealing plate 23,
Stop valve 22 and KF25 flange-interfaces 21 are constituted.Stainless steel tube is by quartz glass sample bottle 11 and the company of series connection of KF25 flange-interfaces 21
Pick up and；KF25 flange-interfaces by clip and air bag 24 or can vacuumize molecular pump 31 and be connected；Sealing plate 23 passes through spiral shell
Bolt is fixed on the perforate flange 62 of vacuum chamber, and by rubber o-ring vacuum sealing；KF25 flange-interfaces 21 can be by card
Hoop and air bag 24 vacuumize molecular pump 31 and are connected；It is row before cryogen is filled with into quartz glass sample bottle 11
Except experiment chamber and the air in pipeline are to ensure the purity of cryogen, need to vacuumize quartz glass sample bottle 11,
Will KF25 flange-interfaces 21 be connected with molecular pump 31 is vacuumized；After the completion of vacuumizing to quartz glass sample bottle 11, close
Stop valve 22, and KF25 flange-interfaces 21 are connected with air bag 24, it is that cryogen is ready into visualized experiment chamber.
After experiment starts, stop valve 22 is opened, fluid automatically flows into quartz glass sample bottle 11 under gas pressure.
As shown in figure 1, pumped vacuum systems is included for the vacuum-pumping pipeline in quartz glass sample bottle 11, heat-insulation vacuum chamber
64 and its vacuum-pumping pipeline, and vacuumize molecular pump 31.Vacuum chamber 64 passes through KF25 flange ports 32 and bellows and vacuumizes
Molecular pump 31 connects；Vacuumizing then by the pipeline in multiplexing cryogen inflation/deflation unit 2 in quartz glass sample bottle 11
It is connected to complete with molecular pump 31 is vacuumized.Cut by threeway 33 and first vacuum valve 34, the second vacuum valve 35
Change the available molecular pump 31 that vacuumizes and complete vacuumizing for quartz glass sample bottle 11 and vacuum chamber 64；Opening the first vacuum valve 34 can
Vacuum chamber 64 is vacuumized, to prevent the frosting of observation window 65 on vacuum chamber outer cylinder body 63 from condensing Germicidal efficacy is affected；Beat
Drive the second vacuum valve 35 and stop valve 22 then can vacuumize to quartz glass sample bottle 11, and with this visualized experiment chamber is extracted out
Original air in 11, ensures the purity of cryogen as far as possible.After the vacuum in quartz glass sample bottle 11 reaches requirement,
Close vacuum valve 35 and maintain adiabatic level so as to only carry out vacuumizing to vacuum chamber 64.
As shown in fig. 6, control temperature unit includes stainless steel substrates 41, coiling heater 42 and PID programmable power supplies 44.Wherein
The thickness of stainless steel substrates 41 is 0.8mm；Coiling heater 42 is wrapped in thickness for 6mm by the manganin wire 43 of line footpath 0.7mm, length 2m
Red copper flange 42 on make；The wire of connection coiling heater 42 is connected confession by aviation connector 56 with programmable power supply 44
Electricity；Some stainless steel substrates 41, coiling heater 42 and adapter flange 19 are according to the same bolt connection of top-down order
It is fixed to cryocooler cold head end.Some stainless steel substrates are added to produce in the middle of coiling heater 42 and Cryo Refrigerator cold head
Temperature across and reduce temperature fluctuation, realize the precise control to temperature；The piece number of stainless steel substrates is added then according to actual temperature control warm area
To determine.Because cryocooler cold head cold is relative to demand surplus, therefore the central aperture of red copper flange 42 is reducing and adapter flange
19 contact area, so as to reduce the cold of incoming visualized experiment chamber unit 1；Coiling heater thickness is only 6mm, by closing
Removing the work puts copper-manganese line resistance wound on it can make highest heating power reach 180W, and the effect of stainless steel substrates in addition can be controlled
Temperature fluctuation range is within 5mK.
As shown in figure 1, temperature survey acquisition system is by thermometer 51, cryocooler cold head end temperature in quartz glass sample bottle
Meter 54, data collecting instrument 57 and computer 58 are constituted.Thermometer 51 passes through welding on quartz glass in quartz glass sample bottle
Four metal fine needles 52 realize with quartz glass sample bottle outside electric signal transmission；Cryocooler cold head end thermometer 54 then leads to
Cross pad 55 and M3 bolts 53 to realize being in close contact with cold head；Pad 55 is cold with the contact plane and refrigeration machine of adapter flange 19
Thermal grease conduction is coated with to strengthen heat transfer, make temperature reading be more nearly institute on head end thermometer 54 and the contact plane of pad 55
The true temperature of measuring point；The wire of two thermometers is connected by aviation connector 56 with external data Acquisition Instrument, and from meter
Temperature data is read on calculation machine 58.
As shown in figure 1, Cryo Refrigerator unit includes Cryo Refrigerator 61, opening flange 62 and vacuum chamber outer cylinder body
63.The cold head end of G-M Cryo Refrigerators 61 is bolted to connection with control temperature unit 4 and visualized experiment chamber unit 1.Very
Two symmetrical observation windows 65 are provided with cavity outer cylinder body 63, so as to using high speed camera to the low temperature in visualized experiment chamber 11
The phenomenon such as fluid liquefaction or solidification carries out observation shooting.
The using method of this observation system includes：
Vacuum chamber and visualized experiment chamber are vacuumized：It is to reduce extraneous leakage heat before being operated using this observation system
Observation is affected with the frosting of observation window 64 condensation prevented on outer cylinder body 63, needs first to vacuumize vacuum chamber 64；To connect true
The KF25 flange ports 32 of cavity 64 are connected with the KF25 flange-interfaces bellows vacuumized on molecular pump 31 by the sealing of KF25 clips
Connect, open vacuum valve 34, vacuum chamber 64 is vacuumized；Treat that vacuum reaches 10-4Reality can be proceeded by after more than Pa magnitudes
Test, turn off after experiment terminates and vacuumize molecular pump 31；Further, it is to exclude in quartz glass sample bottle 11 and pipeline
Air to ensure the purity of cryogen, need to vacuumize quartz glass sample bottle 11, by KF25 flange-interfaces 21
It is connected with molecular pump 31 is vacuumized, opens stop valve 22, open the second vacuum valve 35, treats the vacuum in visualized experiment chamber 11
Degree reaches 10-5After Pa magnitudes, the vacuum valve 35 of stop valve 22 and second is closed.Afterwards by KF25 flange-interfaces 21 by clip and gas
Capsule 24 is connected, and to visualized experiment chamber 11 sample fluid is filled with.
Refrigeration machine cooling process：After vacuum reaches requirement, and KF25 flange-interfaces 21 are connected with air bag 24, then
Refrigeration machine cooling cooling can be opened.Because nitrogen boiling point is relatively low, then the boiling temperature for dropping to cryogen from normal temperature needs longer
The cooling stand-by period；In temperature-fall period can in observed and recorded quartz glass sample bottle on computer 58 thermometer 51 and system
The reading of cold cold head end thermometer 54, to judge the refrigeration machine cooling course of work, whether safety is normal.
The liquefaction of observed and recorded cryogen and process of setting：When cryocooler cold head temperature is reduced near nitrogen boiling point
When, it is slow to open stop valve 22 and airbag valve 25, make cryogen flow into quartz glass sample bottle 11 under the influence of air pressure；
Then temperature control is carried out by control temperature unit 4, temperature control interval can be adjusted as needed, when determining cryogenic fluid liquefaction
Temperature value and keep, then whole liquefaction process is shot by observation window 65；Close after the Low Temperature Liquid scale of construction reaches requirement and cut
Only valve 22 and airbag valve 25, stop being filled with for cryogenic gas.For the process of setting of liquid nitrogen, when cryocooler cold head temperature is reduced
Temperature control need to be carried out by control temperature unit 4 during to the freezing point of liquid nitrogen, concrete grammar is ibid.For solid-state turns to liquid
Change (fusing), liquid and the process of (gasification) is converted to gas, then pass through the heating of coiling heater 42 in turn and realize with heating up.
The operation observed after terminating：After the completion of experiment to be seen, be first shut off Cryo Refrigerator, to prevent rewarming during
The quick increase of pressure causes quartz glass fragmentation after liquid gasification in quartz glass sample bottle 11, need to ensure quartz glass sample bottle
11 inner chambers were connected before liquid gasification with external environment；Stop valve 22 is opened, because cryogen is still in solid-state and will lead to
Part stainless steel tube pipeline blockage on air knife mouth flange 12, therefore merely turn on stop valve 22 and can not still make quartz glass sample
Bottle 11 and ft connection, for safety, need to utilize coiling heater 42 to melt the solid-state cryogen for blocking stainless steel pipeline
Change；After the fusing of solid-state cryogen, visualized experiment chamber unit 1 is connected with external environment condition, can now close coiling heating
Device 42 and molecular pump 31 is vacuumized, treat that its safety returns back to normal temperature.
The specific embodiment of the present invention described in detail above.It should be appreciated that the ordinary skill of this area is without the need for creative
Work just can make many modifications and variations with design of the invention.Therefore, all technical staff in the art are according to this
The design of invention passes through the available technical scheme of logical analysis, reasoning, or a limited experiment in prior art basis,
All should be in the protection domain being defined in the patent claims.
Claims (5)
1. a kind of fluid based on Cryo Refrigerator is controlled liquefies and process of setting visualized experiment observation device, and its feature exists
In, including visualized experiment chamber unit, cryogen inflation/deflation unit, vacuum system, control temperature unit, temperature survey acquisition system
With Cryo Refrigerator unit；
Described Cryo Refrigerator unit includes Cryo Refrigerator (61) and is set in Cryo Refrigerator (61) outer cylinder body outward
(63)；Vacuum chamber (64) is formed between described Cryo Refrigerator (61) and outer cylinder body (63), under described outer cylinder body (63)
The side of portion two, Germicidal efficacy window (65) is arranged with, in the side of outer cylinder body (63) top one sealing plate (23) is provided with, top is another
One side is provided with aviation connector (56)；
Described visualized experiment chamber unit includes quartz glass sample bottle (11), ventilation edge of a knife flange (12), the stainless steel edge of a knife
Flange (15), finned heat exchanger (16) and adapter flange (19)；The top connection institute of described quartz glass sample bottle (11)
Stainless steel edge of a knife flange (15) stated, is provided with internal thread counterbore (14) in described ventilation edge of a knife flange (12), and described
The external screw thread (18) of finned heat exchanger (16) is connected, and is torqued-up to end face laminating；In described ventilation edge of a knife flange (12)
A piece stainless steel tube of welding is penetrated, one end of the stainless steel tube is connected with described cryogen inflation/deflation unit, the other end
Coaxially the central through hole (17) through the finned heat exchanger (16) is to below；Described ventilation edge of a knife flange (12) with
Stainless steel edge of a knife flange (15) realizes low temperature seal by copper washer and tools for bolts ' pretension；The side of the adapter flange (19) with it is low
The cold head end connection of warm refrigeration machine (61), opposite side is connected with described ventilation edge of a knife flange (12)；
Described cryogen inflation/deflation unit includes stainless steel cutting ferrule, the stop valve being welded on described sealing plate (23)
And a KF25 flange-interfaces (21) (22)；Described quartz glass sample bottle (11) is by stainless steel tube successively sealed plate
(23), after stop valve (22) and a KF25 flange-interfaces (21), the airbag valve (25) described in Jing is connected with air bag (24),
Or Jing the second vacuum valve (35) threeways (33) successively described in Jing are connected with the described molecular pump (31) that vacuumizes；
The programmable electricity that described control temperature unit includes multi-disc stainless steel substrates (41), coiling heater (42) and adjusts with PID
Source (44)；The wire of described coiling heater (42) is connected by described aviation connector (56) and programmable power supply (44)
Connect, described multi-disc stainless steel substrates (41), coiling heater (42) and described adapter flange (19) are by top-down order
The cold head end of Cryo Refrigerator (61) is fixed on same bolt connection；
Described vacuum system includes vacuumizing molecular pump (31), the 2nd KF25 flange-interfaces (32), threeway (33)；Described is true
Cavity (64) is by the KF25 flange-interfaces (32) of vacuum-pumping pipeline successively Jing the 2nd, the second vacuum valve (35) and threeway (33) and institute
That what is stated vacuumizes molecular pump (31) connection；
Described temperature survey acquisition system includes thermometer (51), cryocooler cold head end thermometer in quartz glass sample bottle
(54), data collecting instrument (57) and computer (58)；In described quartz glass sample bottle thermometer (51) by welding in stone
Metal fine needle (52) on English glass specimen bottle is realized and the electric signal transmission outside quartz glass sample bottle, described refrigeration machine
Cold head end thermometer (54) is in close contact with cold head；The wire of two thermometers is by aviation connector (56) and outside data
The input of Acquisition Instrument (57) is connected, and the output end of the data collecting instrument (57) is connected with computer (58).
2. the controlled liquefaction of the fluid based on Cryo Refrigerator according to claim 1 and the observation of process of setting visualized experiment
Device, it is characterised in that the thickness of described every stainless steel substrates (41) is 0.8mm.
3. the controlled liquefaction of the fluid based on Cryo Refrigerator according to claim 1 and the observation of process of setting visualized experiment
Device, it is characterised in that described coiling heater (42) is wrapped in thickness by the manganin wire (43) of line footpath 0.7mm, length 2m
To make on the red copper flange (42) of 6mm.
4. the controlled liquefaction of the fluid based on Cryo Refrigerator according to claim 1 and the observation of process of setting visualized experiment
Device, it is characterised in that described adapter flange (19) is made up of the preferable red copper material of heat conductivility.
5. the controlled liquefaction of the fluid based on Cryo Refrigerator according to claim 1 and the observation of process of setting visualized experiment
Device, it is characterised in that be also arranged with perforate flange (62) on described outer cylinder body (63) top, described sealing plate (23) leads to
Cross and be bolted on the perforate flange (62) of vacuum chamber, and by rubber o-ring and described outer cylinder body (63) vacuum sealing.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107656009A (en) * | 2017-10-31 | 2018-02-02 | 苏州市苏测检测技术有限公司 | Food science literature device |
| CN108871020A (en) * | 2018-07-26 | 2018-11-23 | 中国科学院理化技术研究所 | A kind of fluid phase change visualization system |
| CN109030519A (en) * | 2018-06-15 | 2018-12-18 | 王阳 | A kind of electron cryo-microscopy can operational observations recording device |
| CN109499478A (en) * | 2018-11-17 | 2019-03-22 | 金华职业技术学院 | A kind of vacuum reaction and test device |
| CN109668924A (en) * | 2019-01-22 | 2019-04-23 | 中国工程物理研究院激光聚变研究中心 | Submerged gas liquefaction deep cooling experimental provision and its experimental method |
| CN109709138A (en) * | 2018-12-29 | 2019-05-03 | 北京卫星环境工程研究所 | The test macro and test method of vacuum and low temperature Frost deposit |
| CN110230588A (en) * | 2019-06-13 | 2019-09-13 | 中国科学院物理研究所 | Vacuum acquisition device, vacuum plant and vacuum pumping method including it |
| CN112730505A (en) * | 2020-12-18 | 2021-04-30 | 上海交通大学 | Visual experiment chamber for throttling and quantitative measurement of cryogenic fluid |
| CN113049144A (en) * | 2021-03-29 | 2021-06-29 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Heat insulation cavity for temperature measurement system to perform full-system-width low-temperature comprehensive calibration equipment |
| CN113267527A (en) * | 2021-05-19 | 2021-08-17 | 天津大学 | Experimental device for can be used to carry out steady state pond boiling under different saturation pressure |
| CN114486990A (en) * | 2022-04-01 | 2022-05-13 | 东营华亚国联航空燃料有限公司 | Freezing point tester for aviation fuel products |
| CN114526890A (en) * | 2022-02-25 | 2022-05-24 | 上海交通大学 | Visual experimental device for capillary transport performance of low-temperature fluid |
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| CN107656009A (en) * | 2017-10-31 | 2018-02-02 | 苏州市苏测检测技术有限公司 | Food science literature device |
| CN109030519A (en) * | 2018-06-15 | 2018-12-18 | 王阳 | A kind of electron cryo-microscopy can operational observations recording device |
| CN109030519B (en) * | 2018-06-15 | 2020-11-17 | 义乌市研创工业设计有限公司 | Operable observation recording device for cryoendoscope |
| CN108871020A (en) * | 2018-07-26 | 2018-11-23 | 中国科学院理化技术研究所 | A kind of fluid phase change visualization system |
| CN108871020B (en) * | 2018-07-26 | 2023-12-19 | 中国科学院理化技术研究所 | Fluid phase change visualization system |
| CN109499478B (en) * | 2018-11-17 | 2023-10-27 | 金华职业技术学院 | Vacuum reaction and testing device |
| CN109499478A (en) * | 2018-11-17 | 2019-03-22 | 金华职业技术学院 | A kind of vacuum reaction and test device |
| CN109709138A (en) * | 2018-12-29 | 2019-05-03 | 北京卫星环境工程研究所 | The test macro and test method of vacuum and low temperature Frost deposit |
| CN109668924A (en) * | 2019-01-22 | 2019-04-23 | 中国工程物理研究院激光聚变研究中心 | Submerged gas liquefaction deep cooling experimental provision and its experimental method |
| CN110230588B (en) * | 2019-06-13 | 2020-11-20 | 中国科学院物理研究所 | Vacuum acquisition device, vacuum device comprising same, and vacuum pumping method |
| CN110230588A (en) * | 2019-06-13 | 2019-09-13 | 中国科学院物理研究所 | Vacuum acquisition device, vacuum plant and vacuum pumping method including it |
| CN112730505B (en) * | 2020-12-18 | 2022-05-17 | 上海交通大学 | Visual experiment chamber for throttling and quantitative measurement of cryogenic fluid |
| CN112730505A (en) * | 2020-12-18 | 2021-04-30 | 上海交通大学 | Visual experiment chamber for throttling and quantitative measurement of cryogenic fluid |
| CN113049144A (en) * | 2021-03-29 | 2021-06-29 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Heat insulation cavity for temperature measurement system to perform full-system-width low-temperature comprehensive calibration equipment |
| CN113049144B (en) * | 2021-03-29 | 2024-04-09 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Heat insulation cavity for full-system wide low-temperature comprehensive calibration equipment of temperature measurement system |
| CN113267527A (en) * | 2021-05-19 | 2021-08-17 | 天津大学 | Experimental device for can be used to carry out steady state pond boiling under different saturation pressure |
| CN114526890A (en) * | 2022-02-25 | 2022-05-24 | 上海交通大学 | Visual experimental device for capillary transport performance of low-temperature fluid |
| CN114526890B (en) * | 2022-02-25 | 2023-02-28 | 上海交通大学 | Visual experimental device for capillary transport performance of low-temperature fluid |
| CN114486990A (en) * | 2022-04-01 | 2022-05-13 | 东营华亚国联航空燃料有限公司 | Freezing point tester for aviation fuel products |
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