CN104949403B - Cryo Refrigerator valve group and GM type vascular refrigerator - Google Patents
Cryo Refrigerator valve group and GM type vascular refrigerator Download PDFInfo
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- CN104949403B CN104949403B CN201510341544.9A CN201510341544A CN104949403B CN 104949403 B CN104949403 B CN 104949403B CN 201510341544 A CN201510341544 A CN 201510341544A CN 104949403 B CN104949403 B CN 104949403B
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/14—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the cycle used, e.g. Stirling cycle
- F25B9/145—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the cycle used, e.g. Stirling cycle pulse-tube cycle
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- Multiple-Way Valves (AREA)
Abstract
The invention discloses a kind of Cryo Refrigerator valve group and GM type vascular refrigerator, including the little ports valve of one-level, one-level bidirection air intake valve I, one-level bidirection air intake valve II, two grades of little ports valves, two grades of bidirection air intake valve I and two grades of bidirection air intake valve II, also include valve body, the little ports valve of described one-level, one-level bidirection air intake valve I, one-level bidirection air intake valve II, two grades of little ports valves, two grades of bidirection air intake valve I and two grades of bidirection air intake valve II are each attached on valve body, and described valve body is provided with the runner of each valve corresponding interface connection simultaneously.The compact design by process fluid passages for the 4K Cryo Refrigerator valve group of the present invention, so that it is more accurate by valve flow and phase adjusted, reduce the resistance of working-fluid flow, thus the loss of PV work(reduces, and can improve small-power 4K Cryo Refrigerator to a certain extent；The hot junction making refrigeration machine does not need to weld, and realizes the pressure seal of fluid；Make that valve is overall, hot end heat exchanger, pressure transducer setting is simpler.
Description
Technical field
The invention belongs to field of low-temperature refrigeration, more particularly, to a kind of Cryo Refrigerator valve group and carry this Cryo Refrigerator
The GM type vascular refrigerator of valve group.
Background technology
With the development of Cryo Refrigerator, its range of application increasingly expands.Especially 4K Cryo Refrigerator is in small-scale helium
Liquefaction and the again cooling of condensing, Superconductor Transducers and superconduction instrument, the dry calibration of superconducting magnet, Sub-Kelvin refrigeration machine
A lot of aspect such as precooling, Physical Properties of Low Temperature research of material is employed.The 4K warm area Cryo Refrigerator of current main-stream is according to refrigeration
Endless form difference can be divided into GM refrigeration machine and two kinds of GM type vascular refrigerator, and the development of wherein GM type vascular refrigerator is special
Hurry up.The research and development of current small-power 4K GM type vascular refrigerator faces the problem that refrigerating efficiency is difficult to improve.Because helium -4
The input power of compressor is little, and the whole efficiency of current small-power 4K GM type vascular refrigerator is not still high.In order to improve refrigeration
The efficiency of machine, needs refrigeration machine to be designed optimize, reduces various losses as far as possible.
4K GM type vascular refrigerator can be divided into two kinds (using a set of compressor) in structure：
As shown in figure 1, what the first structure of 4K GM type vascular refrigerator included being sequentially connected：Compressor 1, rotary valve
2nd, hot end heat exchanger 3, first order part and second level part, wherein first order part includes：One-level regenerator 4, one-level backheat
Device cool end heat exchanger 5, one-level cold side fluid passage 6, one-level vascular cold end heat exchanger 7, one-level vascular 8, one-level vascular hot junction are changed
Hot device 9, one-level air reservoir 10, the little ports valve of one-level 18, one-level bidirection air intake valve I19, one-level bidirection air intake valve II20, second level part
Including：Two grades of regenerators, 12, two grades of cold side fluid passages 13 of 11, two grades of regenerator cool end heat exchangers, secondary vein pipe cold end heat exchange
Device 14, secondary vein pipe 15,16, two grades of air reservoirs of secondary vein pipe hot end heat exchanger, 21, two grades of bidirection air intake valves of 17, two grades little ports valves
I22, two grades of bidirection air intake valve II23.
As shown in Fig. 2 the second structure of 4K GM type vascular refrigerator.Compare with the first, be all by a compressor
Drive, but the method for mass flow distribution is different.The mass flow of the working gas of second structure is in the heat of refrigeration machine
End is assigned to two-stage, and the therefore cold end of the first order does not distribute the passage of fluid.
For the 4K GM type vascular refrigerator of said structure, the first order of 4K GM type vascular refrigerator be pre-cooling section,
The second level is 4K warm area part, and the work process of refrigeration machine is：The outlet of compressor 1 is provided with the high pressure of working fluid (helium -4)
(discharge) and low pressure (suction) pipe.By the rotary valve 2 linking with compressor, produce the pressure oscillation of helium -4.Due to helium -4
Cycle pressure oscillation, helium -4 is carried out and filler heat exchange in regenerator (one-level regenerator 4 and two grades of regenerators 11), in arteries and veins
Carry out adiabatic compression and expansion in pipe (one-level vascular 8 and secondary vein pipe 15).With this process repeatedly, the temperature of cold end is gradually
Gradually reduce.In the two-stage vascular refrigerator of the first structure, the mass flow of helium -4 is between two-stage by one-level cold side fluid
Passage 6 is assigned to two parts：It is partly into one-level vascular cold end heat exchanger 7, another part enters the heat of two grades of regenerators 11
End.The little ports valve of one-level 18, one-level bidirection air intake valve I19, one-level bidirection air intake valve II20 adjust the quality stream in one-level vascular hot junction
Amount and its phase contrast and pressure between, thus affect the refrigeration performance of one-level.21, two grades of double bidirection air intakes of two grades little ports valves
Valve I22, two grades of bidirection air intake valve II 23 are also such to two grades of impact.In order to reach 4K warm area, regenerator (one-level regenerator 4
With two grades of regenerators 11) and vascular (one-level vascular 8 and secondary vein pipe 15) important role, and the regulation of six valves
Optimize also extremely important.Reason is as follows：It is gentle that the refrigeration performance of 4K GM type vascular refrigerator relies heavily on cold end pressure
The phase contrast of weight flow.The optimization of phase contrast is by above-mentioned six valves (the little ports valve of one-level 18, one-level bidirection air intake valve I
19th, 21, two grades of the little ports valve of 20, two grades of one-level bidirection air intake valve II is in pairs to 22, two grades of bidirection air intake valve II 23 of intake valve I)
Regulation realizing.In order to reach 4K warm area, bidirection air intake valve (one-level bidirection air intake valve I 19, one-level bidirection air intake valve II20,
Two grades in pairs to 22, two grades of bidirection air intake valve II 23 of intake valve I) effect be even more important.Because these valve regulated fluids
Direct current, therefore has influence on the enthalpy stream of fluid, thus affecting the refrigeration performance of 4K warm area.
Existing 4K GM type vascular refrigerator yet suffers from the low problem of refrigerating efficiency.In addition, existing 4K GM type arteries and veins
Control cold need to arrange between compressor and regenerator or air reservoir and vascular hot-side heat exchanger many pipelines and multiple on
The valve stated, structure is loaded down with trivial details, simultaneously results in the presence of various losses：As the damage in rotary valve, working fluid four-way etc.
Lose, its refrigerating efficiency is lower than 4KGM refrigeration machine, especially small-power vascular refrigerator.
The compressor horsepower of existing 4KGM type vascular refrigerator, pressure ratio, the mass flow of working fluid are respectively greater than
1.7kW, 1.5,3g/s, the loss very little of PV work(therefore at valve.
But the mass flow of the compressor horsepower of small-power 4KGM type vascular refrigerator, pressure ratio, working fluid is little respectively
In 1.3kW, 1.5,2.5g/s, therefore can not ignore the loss of PV work(at valve, should reduce as far as possible.And in order to reach 4K
Warm area, the mass flow of working fluid is less in theory, and the fine regulation of the overall optimization of all valves is more important.
Current again without the research for small-power 4KGM type vascular refrigerator, so not having applicable to comprise valve group
And hot end heat exchanger compact design together.
Content of the invention
For the problems referred to above, the present invention proposes a kind of Cryo Refrigerator valve group and with this Cryo Refrigerator valve group
GM type vascular refrigerator, this Cryo Refrigerator valve group can effectively reduce hydraulic resistance, reduces compression medium-loss, improves refrigeration effect
Rate.
A kind of Cryo Refrigerator valve group, including the little ports valve of one-level, one-level bidirection air intake valve I, one-level bidirection air intake valve II, two
The little ports valve of level, two grades of bidirection air intake valve I and two grades of bidirection air intake valve II, also include valve body, the little ports valve of described one-level, one-level
Bidirection air intake valve I, one-level bidirection air intake valve II, two grades of little ports valves, two grades of bidirection air intake valve I and two grades of bidirection air intake valve II are equal
It is fixed on valve body, described valve body is provided with the runner of each valve corresponding interface connection simultaneously.
In the present invention, the connected relation between each valve can adopt currently existing scheme.According to design proposed by the present invention, revolve
The small portion of fluid of rotary valve outlet is assigned to the bidirection air intake valve of two-stage, by these bidirection air intake valves, vascular hot junction
Fluid flows to aperture valve together.Using the solution of the present invention, directly each port is connected with each port of refrigeration machine, fall
Low installation difficulty, eliminates loaded down with trivial details pipeline and connects.
Preferably, described runner includes：
Run through the sprue of described valve body；For connecting the hot junction of rotary valve and one-level regenerator；
It is arranged on the first sub-runner and second sub-runner of valve body one end；It is respectively used to and one-level air reservoir and two grades of air reservoirs
Connect；
It is arranged on the 3rd sub-runner and the 4th sub-runner of the valve body other end；It is respectively used to and one-level vascular and secondary vein
The connection of pipe；
Described one-level bidirection air intake valve I, one-level bidirection air intake valve II, two grades of bidirection air intake valve I and two grades of bidirection air intakes
The outlet of valve II one end is connected with described sprue simultaneously；The little ports valve of described one-level and two grades little ports valve one end outlets respectively with described
First sub-runner and the connection of the second split channel；I.e. one end outlet of the little ports valve of one-level is connected with the first sub-runner, two grades of apertures
One end outlet of valve is connected with second flow channel；
Described one-level bidirection air intake valve I, one-level bidirection air intake valve II, the one-level little ports valve other end outlet simultaneously with the 3rd point
Flow passage；Described two grades of bidirection air intake valve I, two grades of bidirection air intake valve II and two grades of little ports valves even with the 4th sub-runner simultaneously
Logical.
Need in the running of refrigeration machine to measure the fluid pressure fluctuations in some piths.Preferably, it is described
The side wall near valve body top for the sprue is provided with rotary valve outlet pressure sensor, for the pressure wave of detection rotation valve outlet port
Dynamic；Described 3rd sub-runner, the 4th sub-runner side wall are respectively equipped with one-level vascular hot junction pressure transducer, secondary vein pipe hot junction pressure
Force transducer, that is, the 3rd sub-runner side wall be provided with one-level vascular hot junction pressure transducer, for detecting the pressure in one-level vascular hot junction
Fluctuation；The side wall of the 4th sub-runner is provided with secondary vein pipe hot junction pressure transducer, for detecting the pressure in secondary vein pipe hot junction
Fluctuation.The design being provided according to the present invention, the outlet of rotary valve, the pressure transducer in two vascular hot junctions are arranged on three fluids
The prolongation of passage (runner).
Preferably, the little ports valve of described one-level, one-level bidirection air intake valve I, one-level bidirection air intake valve II, two grades of little ports valves,
Two grades of bidirection air intake valve I and two grades of bidirection air intake valve II are arranged along valve body the week side of boss, using this technical scheme, improve further
The compact of whole valve group.
Preferably, the little ports valve of described one-level, one-level bidirection air intake valve I, one-level bidirection air intake valve II, two grades of little ports valves,
Two grades of bidirection air intake valve I, two grades of bidirection air intake valve II are all interfixed by removably and valve body.Using this technical side
Case, facilitates installation and the maintenance of above-mentioned valve.
Preferably, described rotary valve outlet pressure sensor, one-level vascular hot junction pressure transducer, secondary vein pipe hot junction
Pressure transducer is interfixed with described valve body by removably.Using removably, facilitate above-mentioned each sensing
The replacing of device and installation.
The Cryo Refrigerator valve group of the present invention is particularly well-suited to 4K warm area refrigeration machine, and valve body is providing support frame effect
While, also serve as one-level regenerator hot end heat exchanger, one-level vascular hot-side heat exchanger and secondary vein pipe hot end heat exchanger, described valve
There is compact platform flow channel in group, pressure transducer is set in flow passage side wall simultaneously, between each part, adopt removably solid
Fixed, do not need when assembling to weld.
Preferably, described valve body outer circumferential side is provided with radiated rib.Using this technical scheme, improve changing of valve body
The thermal efficiency is it is ensured that the refrigeration performance of refrigeration machine.As further preferred, radiated rib is arranged in the lower part of valve body.
Present invention also offers a kind of GM type vascular refrigerator, using the Cryo Refrigerator described in any of the above-described technical scheme
Valve group adjusts the pressure in vascular hot junction and the phase contrast of gas mass flow.
Preferably, described GM type vascular refrigerator includes compressor, the rotary valve connecting with compressor outlet, with rotation
One-level regenerator that valve outlet port is sequentially communicated, one-level regenerator cool end heat exchanger, two grades of regenerators, two grades of regenerator cold end heat exchange
Device, secondary vein pipe cool end heat exchanger, secondary vein pipe and two grades of air reservoirs, the one-level simultaneously connecting with one-level regenerator cool end heat exchanger
Vascular cold end heat exchanger, one-level vascular and one-level air reservoir, and Cryo Refrigerator valve group, wherein：
The one end open of described sprue and the outlet of described rotary valve；Another end opening of described sprue and institute
State the connection of one-level regenerator hot junction；
Described first sub-runner is connected with described one-level air reservoir；Described second flow channel is connected with described two grades of air reservoirs；Described
3rd sub-runner is connected with described one-level vascular hot junction；Described 4th sub-runner is connected with described secondary vein pipe hot junction.
The design being provided according to the present invention, Cryo Refrigerator valve group also serves as hot end heat exchanger in itself.Regenerator and vascular
Hot end heat exchanger fluid passage is arranged on the prolongation with three fluid passage vertical direction.And hot end heat exchanger cooling fin
Piece is all disposed within the wall of valve body.
Compared with prior art, beneficial effects of the present invention are embodied in：
First, by the compact design of each valve and valve body, reduce in the hydraulic resistance of valve group and dead volume, compression
Work(loses, and ensures the airtight reliability of pressure of helium -4 gas.
2nd, by the compact design of each valve and valve body, remove the overall structure of the valve of complexity from, hot end heat exchanger
Partly, pressure sensor part etc., is all disposed within the part of a synthesis, that is, is all disposed within valve body, overall structure letter
Single.
3rd, by the compact design of each valve and valve body, it is easy to the regulation of valve, improve the system of 4K Cryo Refrigerator
Cold efficiency, thus promote the application of 4K Cryo Refrigerator.
In sum, the 4K Cryo Refrigerator valve group of the present invention by the compact design of process fluid passages so that valve
Flow and phase adjusted are more accurate, reduce the resistance of working-fluid flow, thus the loss of PV work(reduces, can be to a certain extent
Improve the refrigerating efficiency of small-power 4K Cryo Refrigerator；The hot junction making refrigeration machine does not need to weld, and the pressure realizing fluid is close
Envelope；Make that valve is overall, hot end heat exchanger, pressure transducer setting is simpler.
Brief description
Fig. 1 is the first structural representation of existing 4K warm area GM type vascular refrigerator；
Fig. 2 is the second structural representation of existing 4K warm area GM type vascular refrigerator；
Fig. 3 is the structural representation of the 4KGM type vascular refrigerator of the present invention；
Fig. 4 is the topology view of 4K GM type vascular refrigerator valve group of the present invention；
Fig. 5 is the top view (section view) of Cryo Refrigerator valve group of the present invention；
Fig. 6 is the A-A face sectional view of Cryo Refrigerator valve group of the present invention shown in Fig. 5
Fig. 7 is the B-B face sectional view of Cryo Refrigerator valve group of the present invention shown in Fig. 5
Fig. 8 is the D-D face sectional view of Cryo Refrigerator valve group of the present invention shown in Fig. 6
Fig. 9 is the E-E view of Cryo Refrigerator valve group of the present invention shown in Fig. 6
In above-mentioned each accompanying drawing：
1. compressor, 2. rotary valve, 3. hot end heat exchanger, 4. one-level regenerator, 5. one-level regenerator cool end heat exchanger, 6.
One-level cold side fluid passage, 7. one-level vascular cold end heat exchanger, 8. one-level vascular, 9. one-level vascular cold end heat exchanger, 10. one-level
Air reservoir, 11. 2 grades of regenerators, 12. 2 grades of regenerator cool end heat exchangers, 13. 2 grades of cold side fluid conduits, 14. secondary vein Guan Leng
End heat exchanger, 15. secondary vein pipes, 16. secondary vein pipe hot end heat exchangers, 17. 2 grades of air reservoirs, the little ports valve of 18. one-levels, 19. one-levels
Bidirection air intake valve I, 20. one-level bidirection air intake valve II, 21. 2 grades of little ports valves, 22. 2 grades of bidirection air intake valve I, 23. 2 grades are two-way
Intake valve II, 24. rotary valve outlet pressure sensors, 25. one-level vascular hot junction pressure transducers, 26. secondary vein pipe hot junction pressures
Force transducer；
101. valve bodies, 102. sprues, 103. first sub-runners, 104. second sub-runners, 105. the 3rd sub-runners,
106. the 4th sub-runners, 107. radiated ribs.
Specific embodiment
As shown in figures 4-9, a kind of Cryo Refrigerator valve group, including valve body 101, valve body 101 is provided with sprue
102nd, the first sub-runner 103, the second sub-runner 104, the 3rd sub-runner 105 and the 4th sub-runner 106.Sprue 102 is along valve
Body 101 is axially arranged, runs through whole valve body 101, and sprue 102 has and is separately positioned on valve body 101 top and bottom
Two ports, when actually used, for rotating valve outlet port (rotation valve inlet is connected) and one with compressor outlet with external respectively
Level regenerator hot junction is connected；First sub-runner 103, the second sub-runner 104 are located at valve body 101 top, when actually used, first
Sub-runner 103, the port at the second sub-runner 104 top are respectively used to be connected with one-level air reservoir, two grades of air reservoirs；First sub-runner
103rd, the second sub-runner 104 bottom port is located inside valve body 101；3rd sub-runner 105 and the 4th sub-runner 106 are located at valve
Door body 101 bottom, when actually used, the 3rd sub-runner 105, the port of the 4th sub-runner 106 bottom are respectively used to and one-level arteries and veins
Pipe, secondary vein pipe；3rd sub-runner 105, the port at the 4th sub-runner 106 top are located in valve body 101.Sprue 102
Be respectively arranged at two ends with the joint 102a for being connected with external pipeline, the top of the first sub-runner 103 be provided with for extension tube attached
The joint 103a that road connects；The top of the second sub-runner 104 is provided with the joint 104a for being connected with external pipeline；3rd shunting
The bottom of road 105 and the 4th sub-runner 106 is directly docked with one-level regenerator hot junction.
The week side of boss of valve body 101 is simultaneously provided with the little ports valve of one-level 18, one-level bidirection air intake valve I19, one-level bidirection air intake valve
II20,21, two grades of bidirection air intake valve I22 of two grades little ports valves, two grades of bidirection air intake valve II23；When actually used, the little ports valve of one-level
18 one end outlets are connected with the first sub-runner 103 bottom port；The outlet of the little ports valve of one-level 18 other end is pushed up with the 3rd sub-runner 105
The port connection in portion；Two grades little ports valve 21 one end outlets are connected with the second sub-runner 104 bottom port；Two grades little ports valves 21 are another
The port bringing out mouth with the 4th sub-runner 106 top connects；One-level bidirection air intake valve I19, one-level bidirection air intake valve II20, two grades
Bidirection air intake valve I22, the outlet of two grades of bidirection air intake valve II23 one end are connected with sprue 102, one-level bidirection air intake valve I19,
Level bidirection air intake valve II20 other end outlet is connected with the port at the 3rd sub-runner 105 top；Two grades of bidirection air intake valve I22, two
Level bidirection air intake valve II23 other end outlet is connected with the port at the 4th sub-runner 106 top.
Sprue 102 is provided with rotary valve outlet pressure sensor 24 near rotary valve exit side wall, for detecting rotary valve
The pressure of outlet, rotary valve outlet pressure sensor 24 is by being arranged on screwed hole and valve body 101 spiral shell of valve body 101 side
Stricture of vagina is fixed.3rd sub-runner 105, the port side wall at the 4th sub-runner 106 top are respectively equipped with one-level vascular hot junction pressure sensing
Device 25, secondary vein pipe hot junction pressure transducer 26, are respectively used to detect one-level vascular hot junction, the pressure in secondary vein pipe hot junction.
In the present embodiment, " top ", " bottom ", " first " used, " second ", " the 3rd ", " the 4th " etc., it is for
The clearer explanation present invention, does not have any restriction effect to the structure of the present invention.
The little ports valve of one-level 18, one-level bidirection air intake valve I19, one-level bidirection air intake valve II20, two grades little 21, two grades of ports valves are double
To intake valve I22, two grades of bidirection air intake valve II23, rotary valve outlet pressure sensor 24, one-level vascular hot junction pressure transducers
25th, secondary vein pipe hot junction pressure transducer 26 all can be threadably secured mode (NPT screw thread) and fix with valve body 101, be not required to
Want any welding, dismount and easy to maintenance.
As shown in Fig. 3, Fig. 4, Fig. 5, it is the structure chart (dotted portion applying to GM type vascular refrigerator of the present invention
Refrigeration machine valve group for the present invention), the present invention is by little for one-level ports valve 18, one-level bidirection air intake valve I19, one-level bidirection air intake valve
II20,21, two grades of bidirection air intake valve I22 of two grades little ports valves, two grades of bidirection air intake valve II23, hot end heat exchanger 3, one-level vasculars are cold
End heat exchanger 9, secondary vein pipe hot end heat exchanger 16 are integrated on valve body 101, and valve body 101 outer wall is provided with radiated rib 107,
Valve body 101, while serving as installation total bearing, has simultaneously worked as hot end heat exchanger 3, one-level vascular cold end heat exchanger 9, two
The effect of level vascular hot-side heat exchanger 16.When actually used, the two ends of sprue 102 are exported with rotary valve 2 respectively by pipeline
Connect with the hot junction of one-level regenerator 4, the first sub-runner 103, the port at the second sub-runner 104 top pass through pipeline and respectively
Level 10, two grades of air reservoirs 17 of air reservoir connect；3rd sub-runner 105, the 4th sub-runner 106 bottom port pass through pipeline and one-level respectively
Vascular 8 connects with the hot junction of secondary vein pipe 15.As shown in fig. 6, in the present invention, by sprue 102, from compressor 1 out
Fluid flows directly to the entrance of one-level regenerator 4.
As shown in fig. 7, the fluid passage being formed by the first sub-runner 103, the little ports valve of one-level 18, the 3rd sub-runner 105,
Fluid flows directly to the hot junction of one-level vascular 8；Formed by 104, two grades of little ports valves 21 of the second sub-runner and the 4th sub-runner 106
Fluid passage, fluid flows directly to the hot junction of secondary vein pipe 15.
During actual installation of the present invention, first copper mesh is filled in valve body 101, valve body 101 is provided with sprue
102nd, the first sub-runner 103, the outlet of the second sub-runner 104, the 3rd sub-runner 105 and the 4th sub-runner 106, after interface portion
Part is arranged above, and is fixed with bolt.Valve body 101 bottom is provided with flange, for the basic flange with refrigeration machine remainder
Connect.
As shown in Figure 8, Figure 9, rotary valve outlet pressure sensor 24 is arranged on the prolongation of sprue 102.By one
Level vascular hot junction pressure transducer 25, secondary vein pipe hot junction pressure transducer 26 are arranged on the 3rd sub-runner 105 and the 4th shunting
The prolongation in road 106.Pressure transducer periphery is threaded structure, realizes screw thread by the screwed hole on valve body 101 solid
Fixed.
The Cryo Refrigerator valve group of the present invention is by the sprue of valve body 101 and sub-runner it is achieved that by all of valve
The flow of the common regulated fluid of door and the phase contrast of flow and pressure, and measure in hot side fluid in the heat transfer process of hot junction
Pressure oscillation.
The refrigeration machine valve group of the present invention comprises several functions so that the design of whole refrigeration machine is more compact, and valve is overall
Optimizing regulation, the minimizing of drag losses and pressure-tight problem are improved.
What said above is only the preferred embodiments of the present invention, not thereby limits the patent protection model of the present invention
Enclose, the equivalent arrangements conversion that every utilization description of the invention and accompanying drawing content are made, other 4K cryogenic refrigerations can be used in
The relevant technical field of machine, is all included within the scope of the present invention in the same manner.
Claims (10)
1. a kind of Cryo Refrigerator valve group, including the little ports valve of one-level, one-level bidirection air intake valve I, one-level bidirection air intake valve II, two grades
, it is characterised in that also including valve body, described one-level is little for little ports valve, two grades of bidirection air intake valve I and two grades of bidirection air intake valve II
Ports valve, one-level bidirection air intake valve I, one-level bidirection air intake valve II, two grades of little ports valves, two grades of bidirection air intake valve I and two grades are two-way
Intake valve II is each attached on valve body, and described valve body is provided with the runner of each valve corresponding interface connection simultaneously.
2. Cryo Refrigerator valve group according to claim 1 is it is characterised in that described runner includes：
Run through the sprue of described valve body；
It is arranged on the first sub-runner and second sub-runner of valve body one end；
It is arranged on the 3rd sub-runner and the 4th sub-runner of the valve body other end；
Described one-level bidirection air intake valve I, one-level bidirection air intake valve II, two grades of bidirection air intake valve I and two grades of bidirection air intake valve II
One end outlet is connected with described sprue simultaneously；The little ports valve of described one-level and two grades little ports valve one end outlets are respectively with described first
Sub-runner and the connection of the second split channel；
Described one-level bidirection air intake valve I, one-level bidirection air intake valve II, the one-level little ports valve other end outlet simultaneously with the 3rd sub-runner
Connection；Described two grades of bidirection air intake valve I, two grades of bidirection air intake valve II and two grades of little ports valves are connected with the 4th sub-runner simultaneously.
3. Cryo Refrigerator valve group according to claim 2 is it is characterised in that described sprue is near valve body top
Side wall is provided with rotary valve outlet pressure sensor；Described 3rd sub-runner, the 4th sub-runner side wall are respectively equipped with one-level vascular heat
Side pressure force transducer, secondary vein pipe hot junction pressure transducer.
4. Cryo Refrigerator valve group according to claim 2 it is characterised in that the little ports valve of described one-level, one-level two-way enter
Air valve I, one-level bidirection air intake valve II, two grades of little ports valves, two grades of bidirection air intake valve I and two grades of bidirection air intake valve II are along valve body
The week side of boss is arranged.
5. Cryo Refrigerator valve group according to claim 2 it is characterised in that the little ports valve of described one-level, one-level two-way enter
Air valve I, one-level bidirection air intake valve II, two grades of little ports valves, two grades of bidirection air intake valve I, two grades of bidirection air intake valve II are all by removable
Mode of unloading is interfixed with valve body.
6. Cryo Refrigerator valve group according to claim 3 it is characterised in that described rotary valve outlet pressure sensor,
It is mutually solid with described valve body that one-level vascular hot junction pressure transducer, secondary vein pipe hot junction pressure transducer pass through removably
Fixed.
7. Cryo Refrigerator valve group according to claim 2 is it is characterised in that described valve body outer circumferential side is provided with cooling fin
Piece.
8. a kind of GM type vascular refrigerator is it is characterised in that adjust vascular using the Cryo Refrigerator valve group described in claim 1
The pressure in hot junction and the phase contrast of gas mass flow.
9. a kind of GM type vascular refrigerator is it is characterised in that adopt the cryogenic refrigeration described in claim 2-7 any claim
Machine valve group adjusts the pressure in vascular hot junction and the phase contrast of gas mass flow.
10. GM type vascular refrigerator according to claim 9 is it is characterised in that described GM type vascular refrigerator includes pressing
Contracting machine, the rotary valve connecting with compressor outlet, the one-level regenerator being sequentially communicated with rotation valve outlet port, one-level regenerator cold end
Heat exchanger, two grades of regenerators, two grades of regenerator cool end heat exchangers, secondary vein pipe cool end heat exchanger, secondary vein pipe and two grades of air reservoirs,
One-level vascular cold end heat exchanger, one-level vascular and the one-level air reservoir simultaneously connecting with one-level regenerator cool end heat exchanger, and low
Warm refrigeration machine valve group, wherein：
The one end open of described sprue and the outlet of described rotary valve；Another end opening of described sprue and described one
The connection of level regenerator hot junction；
Described first sub-runner is connected with described one-level air reservoir；Described second sub-runner is connected with described two grades of air reservoirs；Described
Three sub-runners are connected with described one-level vascular hot junction；Described 4th sub-runner is connected with described secondary vein pipe hot junction.
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| CN201510341544.9A CN104949403B (en) | 2015-06-18 | 2015-06-18 | Cryo Refrigerator valve group and GM type vascular refrigerator |
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| CN201510341544.9A CN104949403B (en) | 2015-06-18 | 2015-06-18 | Cryo Refrigerator valve group and GM type vascular refrigerator |
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| CN104949403B true CN104949403B (en) | 2017-03-01 |
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| CN108562450A (en) * | 2018-04-17 | 2018-09-21 | 中国科学院理化技术研究所 | A kind of regenerator drag characteristic test device under the conditions of profound hypothermia |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2272120Y (en) * | 1996-08-27 | 1998-01-07 | 浙江大学 | Double-orifice secondary pulse tube refrigerator |
| WO2006075981A1 (en) * | 2005-01-13 | 2006-07-20 | Sumitomo Heavy Industries, Ltd | Hybrid spool valve for multi-port pulse tube |
| CN2804728Y (en) * | 2005-03-22 | 2006-08-09 | 浙江大学 | Low temp refrigeration unit with controllable air intake volume |
| CN2884056Y (en) * | 2005-12-20 | 2007-03-28 | 中国科学院理化技术研究所 | Two-stage pulsation-tube refrigerator coaxial-arranged with coldness accumulator |
| CN101699194A (en) * | 2009-10-28 | 2010-04-28 | 上海皑思信息科技咨询有限公司 | Low-temperature single-stage pulse tube refrigerator |
| US20120117984A1 (en) * | 2010-11-11 | 2012-05-17 | Quantum Design, Inc. | Valve assembly adapted for dynamic control of gas-flow about a cryogenic region |
| CN204787457U (en) * | 2015-06-18 | 2015-11-18 | 浙江大学 | Cryocooler valves and GM type canalis haemalis refrigerator |
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