CN104534721B - Refrigerating system adopting multi-level thermal coupling V-M type pulse tube refrigerating machines - Google Patents
Refrigerating system adopting multi-level thermal coupling V-M type pulse tube refrigerating machines Download PDFInfo
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- CN104534721B CN104534721B CN201410810779.3A CN201410810779A CN104534721B CN 104534721 B CN104534721 B CN 104534721B CN 201410810779 A CN201410810779 A CN 201410810779A CN 104534721 B CN104534721 B CN 104534721B
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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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- 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
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/14—Compression machines, plants or systems characterised by the cycle used
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Abstract
A refrigerating system adopting multi-level thermal coupling V-M type pulse tube refrigerating machines is composed of a high-frequency pressure wave generator, the two or three levels of Stirling type pulse tube refrigerating machines, a low-frequency V-M type pressure wave generator and a low temperature side pulse tube refrigerating machine. The Stirling type pulse tube refrigerating machines work in a multi-temperature-region segment, a high temperature region serves as a cold source to cool the cold end of the low-frequency V-M type pressure wave generator and meanwhile precools the hot end of the low temperature side pulse tube refrigerating machine, and a low temperature region further cools the middle segment of a heat regenerator of the low temperature side pulse tube refrigerating machine; a thermocompressor generates pressure fluctuations depending on the temperature gradient between the room temperature and the cold source in the high-temperature regions of the Stirling type pulse tube refrigerating machines, and the pressure fluctuations drive the low temperature side pulse tube refrigerating machine to reach a lower temperature region. The problems that an existing liquid helium temperature region refrigerating machine is huge in size, low in efficiency, large in vibration and the like can be solved, and the refrigerating system has the advantages of working above the liquid helium temperature region and being high in thermal efficiency, compact in structure, small in size, free from maintenance and the like.
Description
Technical field
The present invention relates to regenerating type low-temperature refrigerator technical field, it is related specifically to the small-sized low-temperature refrigeration technology of liquid helium region
The v-m type pulse tube refrigerating machine of the multistage thermal coupling in field.
Background technology
Liquid helium region Cryo Refrigerator has in the fields such as low-temperature physicss, survey of deep space, low-temperature superconducting, low-temperature electronics
It is widely applied demand, for promoting the development of the spheres of learning such as low-temperature physicss, survey of deep space, low-temperature superconducting, there is important work
With these industry fields are put forward higher requirement to small-sized refrigerator, need to provide higher work under compact systems simultaneously
Make efficiency.
Work in the above warm area of liquid hydrogen (20k) at present and can adopt sterlin refrigerator or Stirling Type Pulse Tube Cryocooler
Technology, the type refrigeration machine adopts reciprocating motion of the pistons, forms pressure oscillation, it is in the nature Reversible Cycle, has in system
Higher efficiency, operating frequency is usually 30-100hz, and system bulk weight is less, calculate and test result indicate that, in liquid
The above warm area of hydrogen, helium is regarded as ideal gases, and simultaneously compared with conventional regenerator matrix, regenerator matrix specific heat capacity is relatively
Larger, greater efficiency usually can be obtained in this warm area, high frequency runs and is obtained in that relatively small system bulk simultaneously.But
The following warm area for liquid hydrogen, because helium characteristic deviates ideal gases, traditional regenerator matrix such as rustless steel, phosphor bronze simultaneously
Equal-volume ratio thermal capacitance declines clearly, and THERMAL REGENERATOR EFFICIENCIES is deteriorated it is therefore desirable to adopt the magnetic fillers such as shot, hocu, limited
In processing technology, such filler can only do glomeration or tightly spherical, if still keeping altofrequency to run, will lead to regenerator with
Gas converting heat is deteriorated, and drag losses is significantly increased, therefore for reaching Effec-tive Function under liquid helium region (4k), system operation frequency
Rate need to be maintained at below 5hz.G-m type refrigeration machine is maintained at the running frequency near 1-2hz, is to reach liquid helium region at present
Main refrigerant machine.And for g-m type refrigeration machine or g-m type pulse tube refrigerating machine, it adopts hydraulic shrinking machine to produce gases at high pressure,
In conjunction with high/low pressure cut-over valve, form the circulation of periodicity high-low pressure gas in refrigeration machine, and then produce refrigeration effect；Its advantage exists
Low in switching valve running frequency, the loss in regenerator is less, is conducive to reaching liquid helium isothermal region, refrigeration machine can reach relatively
High efficiency.But one side high/low pressure cut-over valve resistance is larger, when gas flows through, produce larger droop loss, system thermal efficiency
It is difficult to improve；Another aspect hydraulic shrinking machine needs to be equipped with the equipment such as oil eliminator, and systems bulky is and it needs to periodically be tieed up
Shield, the life-span is difficult to ensure that.
And tie up the pressure wave generator structure strangling Mil's refrigeration machine (v-m type), under the drive of micro-machine, gas is in warm
End is heated, and pressure rise is cooled down in cold end, reduced pressure, the frequency of pressure oscillation is then driven by micro-machine, energy
Enough operations in the range of 1-5hz.The type pressure wave generator relies on the cold and hot temperature difference to produce, and has reliability height, system compact
Deng clear superiority.
And stirling-type refrigeration machine, for reaching liquid hydrogen warm area, generally it is also required to multilevel hierarchy, wherein one-level is mainly in liquid nitrogen
Above warm area produces cold, usual pre-cooling secondary structure, reduces by two grades of cold junction temperatures further, and two grades of cold ends work in 20-30k
Warm area.
Using the one-level cold end of multi-stage stirling type refrigeration machine as v-m type pressure wave generator cold end, using low temperature with
The temperature difference between room temperature (or auxiliary heating), the low-temperature receiver under high frequency is converted to the pressure oscillation under low frequency, can make full use of
The advantages of high frequency CETRINE pulse tube refrigerating machine small volume, liquid hydrogen above warm area efficiency high, reliability height and compact conformation.And it is low
Warm lateral vein tube cooler, relies on the low frequency pressure waves that v-m type pressure wave generator produces to drive, adopts high frequency CETRINE simultaneously
Two grades of type pulse tube refrigerating machine and above low-temperature receiver, as pre-cooling, are operated in liquid helium region, can give full play to this warm area low frequency
Operate the advantages of pressure drop bringing is little, heat exchange efficiency is high.Because low-temperature zone v-m type pulse tube refrigerating machine is pre-chilled to liquid hydrogen temperature
Area, between refrigeration machine hot junction and cold end, the temperature difference is less, and institute's consumption sound work((pv work() is less, therefore, it is possible to v-m type pressure wave generator
System bulk.
Accordingly, as the multistage coupled structure of BROAD SUMMARY of the present invention, in CETRINE pulse tube refrigerating machine and low temperature
Between lateral vein tube cooler, by way of using multistage thermal coupling, multi-stage high-frequency sterlin refrigerator can be made full use of
Refrigerating capacity not at the same level, reduces low frequency system institute power consumption as far as possible, improves complete machine temperature field distribution further, using can have
Effect improves system thermal efficiency, and the high frequency using stirling-type refrigeration machine runs advantage, reduces low frequency v-m type pressure wave generator
Driving power, reduces machine volume and quality, and for improving system compactness, to improve refrigeration machine competitiveness significant.
Content of the invention
Present invention aim at solving the problems such as existing liquid helium region refrigeration machine is bulky, efficiency is low, vibration is big, and carry
For a kind of refrigeration system using multistage thermal coupling v-m type pulse tube refrigerating machine, this refrigeration system be operable with liquid hydrogen warm area with
On, it has the advantages that thermal efficiency height, compact conformation, small volume and non-maintaining；
Technical scheme has a following four structure:
One as shown in figure 1, the present invention provide the refrigeration system using multistage thermal coupling v-m type pulse tube refrigerating machine, its
By a high-frequency pressure wave producer 1, two-stage Stirling Type Pulse Tube Cryocooler, a low frequency v-m type pressure wave generator and
One low temperature side pulse tube refrigerating machine composition；
First order Stirling Type Pulse Tube Cryocooler in described two-stage Stirling Type Pulse Tube Cryocooler is by being sequentially connected
In the one-level hot end heat exchanger 2 of described high-frequency pressure wave producer 1 port of export, one-level regenerator 3, one-level cool end heat exchanger 4,
Level pulse tube 5, one-level pulse tube hot end heat exchanger 6, one-level inertia tube 7 and one-level air reservoir 8 form；Described two-stage stirling-type arteries and veins
Second level Stirling Type Pulse Tube Cryocooler in tube cooler is by being sequentially connected to described one-level cool end heat exchanger 4 port of export
10, two grades of cool end heat exchangers 11 of two grades of regenerators, secondary vein washing pipe 12,13, two grades of inertia of secondary vein washing pipe hot end heat exchanger
Pipe 14 and two grades of air reservoirs 15 form；
Described low frequency v-m type pressure wave generator is sequentially communicated in described room temperature by room temperature displacer and by connecting line
The compressor hot end heat exchanger 19 of displacer lower cavity, compressor side regenerator 20, compressor side cool end heat exchanger 21, heat are slow
Washing pipe 23 and thermal buffer tube hot end heat exchanger 22 form, and described thermal buffer tube hot end heat exchanger 22 passes through gas connection pipe road and room
Warm displacer upper cavity is connected；Described room temperature displacer is by displacer housing, the room temperature row within displacer housing
Go out device piston 18 and form with the motor connecting rod 34 being fixedly installed in described room temperature displacer piston 18 upper end；
Described low temperature side pulse tube refrigerating machine is by being sequentially connected to the low of described compressor side cool end heat exchanger 21 port of export
Warm side First Heat Exchanger 24, low temperature side the first regenerator 25, low temperature side Intermediate Heat Exchanger 26, low temperature side the second regenerator 27, low
Warm side cool end heat exchanger 28, low temperature side pulse tube 29, low temperature side pulse tube hot end heat exchanger 30, the first valve 31 and low temperature side gas
Storehouse 33 forms；
Connecting line between described room temperature displacer and compressor hot end heat exchanger 19 and described low temperature side pulse tube hot junction
Equipped with the second valve 32 between connecting line between heat exchanger 30 and the first valve 31；
Described compressor side cool end heat exchanger 21 and thermal buffer tube 23 and one-level cool end heat exchanger 4 and first order pulse tube
5 are in parallel by the first heat bridge 9；
Described two grades of cool end heat exchangers 11 and secondary vein washing pipe 12 and described low temperature side Intermediate Heat Exchanger 26 pass through second
Heat bridge 17 is in parallel.
Wherein, compressor side cool end heat exchanger 21 is cooled down by one-level cool end heat exchanger 4 by heat bridge 9, thermal buffer tube hot junction
Heat exchanger 22 is connected with room temperature displacer 18 upper cavity by connecting tube；At compressor side cool end heat exchanger 21, a part
Gas pressure fluctuation enters thermal buffer tube 23, and another part enters low temperature side First Heat Exchanger 24；
Adopt the phase modulation version of needle-valve+bidirection air intake in low temperature side pulse tube refrigerating machine；As shown in figure 1, the first valve
Door the 31, second valve 32 and the second air reservoir 33 collectively constitute phase modulating mechanism, and the first valve 31 is located at the second air reservoir 32 and the second arteries and veins
Between washing pipe hot end heat exchanger 30, the second valve 32 connects low temperature side pulse tube hot end heat exchanger 30 and compressor hot end heat exchanger
19, form bidirection air intake mechanism.
Two as shown in Fig. 2 the present invention provide the refrigeration system using multistage thermal coupling v-m type pulse tube refrigerating machine, its
By a high-frequency pressure wave producer 1, three-level Stirling Type Pulse Tube Cryocooler, a low frequency v-m type pressure wave generator and
One low temperature side pulse tube refrigerating machine composition；
First order Stirling Type Pulse Tube Cryocooler in described three-level Stirling Type Pulse Tube Cryocooler is by being sequentially connected
In the one-level hot end heat exchanger 2 of described high-frequency pressure wave producer 1 port of export, one-level regenerator 3, one-level cool end heat exchanger 4,
Level pulse tube 5, one-level pulse tube hot end heat exchanger 6, one-level inertia tube 7 and one-level air reservoir 8 form；Described three-level stirling-type arteries and veins
Second level Stirling Type Pulse Tube Cryocooler in tube cooler is by being sequentially connected to described one-level cool end heat exchanger 4 port of export
10, two grades of cool end heat exchangers 11 of two grades of regenerators, secondary vein washing pipe 12,13, two grades of inertia of secondary vein washing pipe hot end heat exchanger
Pipe 14 and two grades of air reservoirs 15 form；Third level stirling-type pulse tube refrigeration in described three-level Stirling Type Pulse Tube Cryocooler
Machine is by being sequentially connected to the three-level regenerator 36 of described two grades of cool end heat exchanger 11 ports of export, three-level cool end heat exchanger 37, three-level
Pulse tube 41, three pulse tube hot end heat exchanger 42, three-level inertia tube 43 and three-level air reservoir 44 form；
Described low frequency v-m type pressure wave generator is sequentially communicated in described room temperature by room temperature displacer and by connecting line
The compressor hot end heat exchanger 19 of displacer lower cavity, compressor side regenerator 20, compressor side cool end heat exchanger 21, heat are slow
Washing pipe 23 and thermal buffer tube hot end heat exchanger 22 form, and described thermal buffer tube hot end heat exchanger 22 passes through gas connection pipe road and room
Warm displacer upper cavity is connected；Described room temperature displacer is by displacer housing, the room temperature row within displacer housing
Go out device piston 18 and form with the motor connecting rod 34 being fixedly installed in described room temperature displacer piston 18 upper end；
Described low temperature side pulse tube refrigerating machine is by being sequentially connected to the low of described compressor side cool end heat exchanger 21 port of export
Warm side First Heat Exchanger 24, low temperature side the first regenerator 25, low temperature side Intermediate Heat Exchanger 26 and institute is connected to by connecting line
State low temperature side the second regenerator 27 and low temperature side cool end heat exchanger 28, the low temperature side the 3rd of low temperature side Intermediate Heat Exchanger 26 port of export
Regenerator 38, low temperature side the second cool end heat exchanger 39, low temperature side pulse tube 29, low temperature side pulse tube hot end heat exchanger 30, first
Valve 31 and low temperature side air reservoir 33 form；
Connecting line between described room temperature displacer and compressor hot end heat exchanger 19 and described low temperature side pulse tube hot junction
Equipped with the second valve 32 between connecting line between heat exchanger 30 and the first valve 31；
Described compressor side cool end heat exchanger 21 and thermal buffer tube 23 and one-level cool end heat exchanger 4 and first order pulse tube
5 are in parallel by the first heat bridge 9；
Described two grades of cool end heat exchangers 11 and secondary vein washing pipe 12 and described low temperature side Intermediate Heat Exchanger 26 pass through second
Heat bridge 17 is in parallel；
Described three-level cool end heat exchanger 37 and three pulse tube 41 and described low temperature side cool end heat exchanger 28 pass through the 3rd
Heat bridge 40 is in parallel.
The v-m type pulse tube refrigerating machine using multistage thermal coupling of the present invention, low frequency v-m type pressure wave generator has two kinds
Pattern, a kind of as shown in figure 1, employing thermal buffer tube 23 between hot junction and cold end, it is advantageous that movement-less part under low temperature,
Structure is simple；As shown in figure 3, employing across warm area displacer between hot junction and cold end, it drives another kind in motor
Under carry out reciprocal low frequency movement, promote gas by periodic heat, heat release, have an advantage in that and can realize bigger pressure wave
Dynamic.
Three as shown in figure 3, the present invention provide the refrigeration system using multistage thermal coupling v-m type pulse tube refrigerating machine, its
By a high-frequency pressure wave producer 1, two-stage Stirling Type Pulse Tube Cryocooler, a low frequency v-m type pressure wave generator and
One low temperature side pulse tube refrigerating machine composition；
First order Stirling Type Pulse Tube Cryocooler in described two-stage Stirling Type Pulse Tube Cryocooler is by being sequentially connected
In the one-level hot end heat exchanger 2 of described high-frequency pressure wave producer 1 port of export, one-level regenerator 3, one-level cool end heat exchanger 4,
Level pulse tube 5, one-level pulse tube hot end heat exchanger 6, one-level inertia tube 7 and one-level air reservoir 8 form；Described two-stage Stirling type arteries and veins
Second level Stirling Type Pulse Tube Cryocooler in tube cooler is by being sequentially connected to described one-level cool end heat exchanger 4 port of export
10, two grades of cool end heat exchangers 11 of two grades of regenerators, secondary vein washing pipe 12,13, two grades of inertia of secondary vein washing pipe hot end heat exchanger
Pipe 14 and two grades of air reservoirs 15 form；
Described low frequency v-m type pressure wave generator is by the compressor hot end heat exchanger 19 being sequentially connected, compressor side backheat
Device 20, compressor side cool end heat exchanger 21 and across warm area displacer composition, described compressor hot end heat exchanger 19 is by gas even
Adapter road is connected with across warm area displacer upper cavity；Described across warm area displacer is by displacer housing, in displacer shell
Across warm area displacer piston 35 within body is with the motor being fixedly installed in described across warm area displacer piston 35 upper end even
Bar 34 forms；
Described low temperature side pulse tube refrigerating machine is by being sequentially connected to the low of described compressor side cool end heat exchanger 21 port of export
Warm side First Heat Exchanger 24, low temperature side the first regenerator 25, low temperature side Intermediate Heat Exchanger 26, low temperature side the second regenerator 27, low
Warm side cool end heat exchanger 28, low temperature side pulse tube 29, low temperature side pulse tube hot end heat exchanger 30, the first valve 31 and low temperature side gas
Storehouse 33 forms；
Connecting line between described low temperature side pulse tube hot end heat exchanger 30 and the first valve 31 and described across warm area discharge
Equipped with the second valve 32 between connecting line between device upper cavity and compressor hot end heat exchanger 19；
Described compressor side cool end heat exchanger 21 and across warm area displacer and one-level cool end heat exchanger 4 and first order pulse
Pipe 5 is in parallel by the first heat bridge 9；
Described two grades of cool end heat exchangers 11 and secondary vein washing pipe 12 and described low temperature side Intermediate Heat Exchanger 26 pass through second
Heat bridge 17 is in parallel.
Four as shown in figure 4, the present invention provide the refrigeration system using multistage thermal coupling v-m type pulse tube refrigerating machine, its
By a high-frequency pressure wave producer 1, three-level Stirling Type Pulse Tube Cryocooler, a low frequency v-m type pressure wave generator and
One low temperature side pulse tube refrigerating machine composition；
First order Stirling Type Pulse Tube Cryocooler in described three-level Stirling Type Pulse Tube Cryocooler is by being sequentially connected
In the one-level hot end heat exchanger 2 of described high-frequency pressure wave producer 1 port of export, one-level regenerator 3, one-level cool end heat exchanger 4,
Level pulse tube 5, one-level pulse tube hot end heat exchanger 6, one-level inertia tube 7 and one-level air reservoir 8 form；Described three-level stirling-type arteries and veins
Second level Stirling Type Pulse Tube Cryocooler in tube cooler is by being sequentially connected to described one-level cool end heat exchanger 4 port of export
10, two grades of cool end heat exchangers 11 of two grades of regenerators, secondary vein washing pipe 12,13, two grades of inertia of secondary vein washing pipe hot end heat exchanger
Pipe 14 and two grades of air reservoirs 15 form；Third level stirling-type pulse tube refrigeration in described three-level Stirling Type Pulse Tube Cryocooler
Machine is by being sequentially connected to the three-level regenerator 36 of described two grades of cool end heat exchanger 11 ports of export, three-level cool end heat exchanger 37, three-level
Pulse tube 41, three pulse tube hot end heat exchanger 42, three-level inertia tube 43 and three-level air reservoir 44 form；
Described low frequency v-m type pressure wave generator is by the compressor hot end heat exchanger 19 being sequentially connected, compressor side backheat
Device 20, compressor side cool end heat exchanger 21 and across warm area displacer composition, described compressor hot end heat exchanger 19 is by gas even
Adapter road is connected with across warm area displacer upper cavity；Described across warm area displacer is by displacer housing, in displacer shell
Across warm area displacer piston 35 within body is with the motor being fixedly installed in described across warm area displacer piston 35 upper end even
Bar 34 forms；
Described low temperature side pulse tube refrigerating machine is by being sequentially connected to the low of described compressor side cool end heat exchanger 21 port of export
Warm side First Heat Exchanger 24, low temperature side the first regenerator 25, low temperature side Intermediate Heat Exchanger 26, low temperature side the second regenerator 27, low
Warm side cool end heat exchanger 28, low temperature side the 3rd regenerator 38, low temperature side the second cool end heat exchanger 39, low temperature side pulse tube 29, low
Warm lateral vein washing pipe hot end heat exchanger 30, the first valve 31 and low temperature side air reservoir 33 form；
Connecting line between described across warm area displacer and compressor hot end heat exchanger 19 and described low temperature side pulse tube heat
Equipped with the second valve 32 between connecting line between end heat exchanger 30 and the first valve 31；
Described compressor side cool end heat exchanger 21 and across warm area displacer and one-level cool end heat exchanger 4 and first order pulse
Pipe 5 is in parallel by the first heat bridge 9；
Described two grades of cool end heat exchangers 11 and secondary vein washing pipe 12 and described low temperature side Intermediate Heat Exchanger 26 pass through second
Heat bridge 17 is in parallel；
Described three-level cool end heat exchanger 37 and three pulse tube 41 and described low temperature side cool end heat exchanger 28 pass through the 3rd
Heat bridge 40 is in parallel.
Described low temperature side the second regenerator 27 adopts magnetic material as implant.
Described first heat bridge 9, the second heat bridge 17 and the 3rd heat bridge 40 make for high thermal conductivity metal material.
Described in structure 1 and 3, the one-level cool end heat exchanger 4 of structure works in liquid nitrogen temperature；Two grades of cool end heat exchangers 11 work
In liquid hydrogen warm area；Described compressor cool end heat exchanger 21 works in liquid nitrogen temperature；Compressor hot end heat exchanger 19 works in room
Warm area or high-temperature region is worked in by certain mode of heating；Low temperature side cool end heat exchanger 28 works in liquid helium region.
The one-level cool end heat exchanger (4) of structure described in structure 2 and 4 works in the above warm area of liquid nitrogen；Two grades of cool end heat exchangers
(11) work between liquid nitrogen and liquid hydrogen warm area,；Described compressor cool end heat exchanger (21) works in the above warm area of liquid nitrogen；Pressure
Contracting machine hot end heat exchanger (19) works in room-temperature zone or works in high-temperature region by certain mode of heating；Low temperature side cold end heat exchange
Device (28) is cooled to liquid hydrogen warm area in advance, and low temperature side second cool end heat exchanger (39) works in liquid helium region.
It is an advantage of the current invention that:
1st, the multi-stage stirling type pulse tube refrigerating machine of the present invention works in more than liquid hydrogen warm area, takes full advantage of the type
Refrigeration machine this warm area interior-heat efficiency high, compact conformation, small volume and non-maintaining the advantages of；
2nd, low frequency v-m type pressure wave generator is adopted to drive, it is built using multi-stage stirling type pulse tube refrigerating machine low-temperature receiver
Vertical temperature difference work, takes full advantage of that the type compressor operating frequency is low, compact conformation advantage；
3rd, multiple cold end pre-cooling low temperature side pulse tube refrigerating machines of multi-stage stirling type pulse tube refrigerating machine, maximum limit are adopted
The power consumption needed for reduction low temperature side of degree；
4th, it is substantially reversible Stirling thermodynamic cycle, system effectiveness that can be higher than other types refrigeration machine and more
High power density.
Brief description
Fig. 1 is a kind of structural representation of the v-m type pulse tube refrigerating machine (embodiment 1) using multistage thermal coupling；
Fig. 2 is a kind of structural representation of the v-m type pulse tube refrigerating machine (embodiment 2) using multistage thermal coupling；
Fig. 3 is a kind of structural representation of the v-m type pulse tube refrigerating machine (embodiment 3) using multistage thermal coupling；
Fig. 4 is a kind of structural representation of the v-m type pulse tube refrigerating machine (embodiment 4) using multistage thermal coupling.
Specific embodiment
Embodiment 1:
The structure of the v-m type pulse tube refrigerating machine using multistage thermal coupling of the present embodiment is as shown in figure 1, it is high by one
Frequency pressure wave generator 1, two-stage Stirling Type Pulse Tube Cryocooler, a low frequency v-m type pressure wave generator and a low temperature
Lateral vein tube cooler forms；
First order Stirling Type Pulse Tube Cryocooler in described two-stage Stirling Type Pulse Tube Cryocooler is by being sequentially connected
In the one-level hot end heat exchanger 2 of described high-frequency pressure wave producer 1 port of export, one-level regenerator 3, one-level cool end heat exchanger 4,
Level pulse tube 5, one-level pulse tube hot end heat exchanger 6, one-level inertia tube 7 and one-level air reservoir 8 form；Described two-stage Stirling type arteries and veins
Second level Stirling Type Pulse Tube Cryocooler in tube cooler is by being sequentially connected to described one-level cool end heat exchanger 4 port of export
10, two grades of cool end heat exchangers 11 of two grades of regenerators, secondary vein washing pipe 12,13, two grades of inertia of secondary vein washing pipe hot end heat exchanger
Pipe 14 and two grades of air reservoirs 15 form；
Described low frequency v-m type pressure wave generator is sequentially communicated in described room temperature by room temperature displacer and by connecting line
The compressor hot end heat exchanger 19 of displacer lower cavity, compressor side regenerator 20, compressor side cool end heat exchanger 21, heat are slow
Washing pipe 23 and thermal buffer tube hot end heat exchanger 22 form, and described thermal buffer tube hot end heat exchanger 22 passes through gas connection pipe road and room
Warm displacer upper cavity is connected；Described room temperature displacer is by displacer housing, the room temperature row within displacer housing
Go out device piston 18 and form with the motor connecting rod 34 being fixedly installed in described room temperature displacer piston 18 upper end；
Described low temperature side pulse tube refrigerating machine is by being sequentially connected to the low of described compressor side cool end heat exchanger 21 port of export
Warm side First Heat Exchanger 24, low temperature side the first regenerator 25, low temperature side Intermediate Heat Exchanger 26, low temperature side the second regenerator 27, low
Warm side cool end heat exchanger 28, low temperature side pulse tube 29, low temperature side pulse tube hot end heat exchanger 30, the first valve 31 and low temperature side gas
Storehouse 33 forms；
Connecting line between described room temperature displacer and compressor hot end heat exchanger 19 and described low temperature side pulse tube hot junction
Equipped with the second valve 32 between connecting line between heat exchanger 30 and the first valve 31；
Described compressor side cool end heat exchanger 21 and thermal buffer tube 23 and one-level cool end heat exchanger 4 and first order pulse tube
5 are in parallel by the first heat bridge 9；Described two grades of cool end heat exchangers 11 and secondary vein washing pipe 12 and described low temperature side intermediate heat transfer
Device 26 is in parallel by the second heat bridge 17.
Compressor side cool end heat exchanger 21 is cooled down by one-level cool end heat exchanger 4 by heat bridge 9, thermal buffer tube hot end heat exchanger
22 are connected with room temperature displacer 18 upper cavity by connecting tube；At compressor side cool end heat exchanger 21, a part of gas pressure
Fluctuation enters thermal buffer tube 23, and another part enters low temperature side First Heat Exchanger 24；
Adopt the phase modulation version of needle-valve+bidirection air intake in low temperature side pulse tube refrigerating machine；As shown in figure 1, the first valve
Door the 31, second valve 32 and the second air reservoir 33 collectively constitute phase modulating mechanism, and the first valve 31 is located at the second air reservoir 32 and the second arteries and veins
Between washing pipe hot end heat exchanger 30, the second valve 32 connects low temperature side pulse tube hot end heat exchanger 30 and compressor hot end heat exchanger
19, form bidirection air intake mechanism.
This multi-stage stirling type pulse tube refrigerating machine medium-high frequency pressure wave generator 1 under external force, in moving system
he4Carry out straight reciprocating motion, and then produce pressure oscillation, form periodic compression and expansion, and then in one-level regenerator 3 He
Refrigeration effect is produced in two grades of regenerators 10.The one-level cool end heat exchanger 4 of one-level regenerator 3 cold end passes through connecting tube and one-level arteries and veins
Washing pipe 5 is connected, and one-level pulse tube 5 hot end heat exchanger 6 is connected with one-level inertia tube 7, and one-level inertia tube 7 is common with one-level air reservoir 8
The phase modulation structure of composition primary structure is so that the suitable sound field conditions of formation are so that one-level cold end heat exchange one-level regenerator 3 in
Device 4 is cooled to liquid nitrogen temperature, and produces certain refrigerating capacity.In one-level cool end heat exchanger 4, pressure oscillation enters two by connecting tube
Level regenerator 10, lowers the temperature in secondary structure further.
Two grades of cool end heat exchangers 11 of two grades of regenerator 10 cold ends are connected with secondary vein washing pipe 12 by connecting tube, secondary vein
Washing pipe 12 is connected with two grades of inertia tubes 14 by two grades of regenerators 13, and two grades of inertia tubes 14 and two grades of air reservoirs 15 collectively constitute two grades
The phase modulation structure of structure, so that forming suitable sound field conditions in two grades of regenerators 10, is transmitted in one-level cool end heat exchanger 4
The pressure oscillation coming over is ordered about down, two grades of cool end heat exchangers 11 is cooled to liquid hydrogen warm area, and produces certain refrigerating capacity.
The refrigerating capacity that one-level cool end heat exchanger 4 in multi-stage stirling type pulse tube refrigerating machine produces is transferred to the first heat bridge
9, the first heat bridge 9 is that the high thermal conductivity materials such as red copper make, and it connects one-level cool end heat exchanger 4 and compressor cool end heat exchanger
21, compressor cool end heat exchanger 21 is cooled to liquid nitrogen temperature.Low frequency v-m type pressure wave generator relies on the heat exchange of compressor hot junction
The temperature difference work set up between device 19 and compressor cool end heat exchanger 21；In the presence of motor connecting rod 34, room-temperature zone
Displacer piston 18 promotes gas reciprocating, is heated in hot junction, pressure increases, and is cooled in cold end, reduced pressure, warp
Go through v-m type thermodynamic cycle, produce larger pressure oscillation.
The gas pressure fluctuation that v-m type pressure wave generator produces, as driving source, enters low temperature side pulse tube refrigerating machine
Low temperature side First Heat Exchanger 24, low temperature side the first regenerator 25 is used for transmitting pressure oscillation to low temperature side the second regenerator 26,
Low temperature side the second regenerator 27 passes through two grades of cool end heat exchangers in the second heat bridge 17 and multi-stage stirling type pulse tube refrigerating machine
11 are connected；Second heat bridge 17 is that the high thermal conductivity materials such as red copper make, and the refrigerating capacity that two grades of cool end heat exchangers 11 are produced passes
It is handed to low temperature side the second regenerator 27 hot junction so as to reach liquid hydrogen warm area；Low temperature side the second regenerator 26 is by low temperature side
The gas pressure fluctuation that the v-m type pressure wave generator that one regenerator 25 is transmitted to produces is ordered about down, and coordinates suitable tune
Phase mechanism, reaches liquid helium region.
In liquid helium region, helium volumetric specific heat capacity increases, and the thermal capacitance of common fillers reduces, therefore in the 4th regenerator 26
Using magnetic heat-storing material.
The phase modulation structure of low temperature side pulse tube refrigerating machine adopts the building form of bidirection air intake+needle-valve.As shown in figure 1,
First valve 31, the second valve 32 and low temperature side air reservoir 33 collectively constitute phase modulating mechanism, and the first valve 31 is located at the second air reservoir 32
And the second pulse tube hot end heat exchanger 30 between, the second valve connects low temperature side pulse tube hot end heat exchanger 30 and compressor hot junction
Heat exchanger 19, forms bidirection air intake mechanism.
Embodiment 2
With embodiment 1, difference is that multi-stage stirling type pulse tube refrigerating machine employs three-level knot to embodiment 2 basic structure
Structure, as shown in Fig. 2 it is by a high-frequency pressure wave producer 1, three-level Stirling Type Pulse Tube Cryocooler, a low frequency v-m type
Pressure wave generator and a low temperature side pulse tube refrigerating machine composition；
First order Stirling Type Pulse Tube Cryocooler in described three-level Stirling Type Pulse Tube Cryocooler is by being sequentially connected
In the one-level hot end heat exchanger 2 of described high-frequency pressure wave producer 1 port of export, one-level regenerator 3, one-level cool end heat exchanger 4,
Level pulse tube 5, one-level pulse tube hot end heat exchanger 6, one-level inertia tube 7 and one-level air reservoir 8 form；Described three-level stirling-type arteries and veins
Second level Stirling Type Pulse Tube Cryocooler in tube cooler is by being sequentially connected to described one-level cool end heat exchanger 4 port of export
10, two grades of cool end heat exchangers 11 of two grades of regenerators, secondary vein washing pipe 12,13, two grades of inertia of secondary vein washing pipe hot end heat exchanger
Pipe 14 and two grades of air reservoirs 15 form；Third level stirling-type pulse tube refrigeration in described three-level Stirling Type Pulse Tube Cryocooler
Machine is by being sequentially connected to the three-level regenerator 36 of described two grades of cool end heat exchanger 11 ports of export, three-level cool end heat exchanger 37, three-level
Pulse tube 41, three pulse tube hot end heat exchanger 42, three-level inertia tube 43 and three-level air reservoir 44 form；
Described low frequency v-m type pressure wave generator is sequentially communicated in described room temperature by room temperature displacer and by connecting line
The compressor hot end heat exchanger 19 of displacer lower cavity, compressor side regenerator 20, compressor side cool end heat exchanger 21, heat are slow
Washing pipe 23 and thermal buffer tube hot end heat exchanger 22 form, and described thermal buffer tube hot end heat exchanger 22 passes through gas connection pipe road and room
Warm displacer upper cavity is connected；Described room temperature displacer is by displacer housing, the room temperature row within displacer housing
Go out device piston 18 and form with the motor connecting rod 34 being fixedly installed in described room temperature displacer piston 18 upper end；
Described low temperature side pulse tube refrigerating machine is by being sequentially connected to the low of described compressor side cool end heat exchanger 21 port of export
Warm side First Heat Exchanger 24, low temperature side the first regenerator 25, low temperature side Intermediate Heat Exchanger 26 and institute is connected to by connecting line
State low temperature side the second regenerator 27 and low temperature side cool end heat exchanger 28, the low temperature side the 3rd of low temperature side Intermediate Heat Exchanger 26 port of export
Regenerator 38, low temperature side the second cool end heat exchanger 39, low temperature side pulse tube 29, low temperature side pulse tube hot end heat exchanger 30, first
Valve 31 and low temperature side air reservoir 33 form；
Connecting line between described room temperature displacer and compressor hot end heat exchanger 19 and described low temperature side pulse tube hot junction
Equipped with the second valve 32 between connecting line between heat exchanger 30 and the first valve 31；
Described compressor side cool end heat exchanger 21 and thermal buffer tube 23 and one-level cool end heat exchanger 4 and first order pulse tube
5 are in parallel by the first heat bridge 9；Described two grades of cool end heat exchangers 11 and secondary vein washing pipe 12 and described low temperature side intermediate heat transfer
Device 26 is in parallel by the second heat bridge 17；Described three-level cool end heat exchanger 37 and three pulse tube 41 and described low temperature side cold end
Heat exchanger 28 is in parallel by the 3rd heat bridge 40.
The present embodiment is connected with three-level regenerator 36 by connecting tube in two grades of cool end heat exchangers 11 downside, three-level regenerator
The three-level cool end heat exchanger 37 of 36 cold ends is connected with three pulse tube 41 by connecting tube, and three pulse tube 41 passes through three-level hot junction
Heat exchanger 42 is connected with three-level inertia tube 43, and three-level inertia tube 43 and three-level air reservoir 44 collectively constitute the phase modulation knot of tertiary structure
Structure is so that form suitable sound field conditions, the pressure passing in two grades of cool end heat exchangers 11 in three-level regenerator 36
Fluctuation is ordered about down, three-level cool end heat exchanger 37 is cooled to below liquid hydrogen warm area, and produces certain refrigerating capacity.
Multi-stage stirling type pulse tube refrigerating machine one-level and secondary structure and v-m type pressure wave generator, low temperature side pulse
The connected mode of control cold is with embodiment 1.And low temperature side the 3rd regenerator 38 passes through the 3rd heat bridge 40 and multi-stage stirling type
Three-level cool end heat exchanger 37 in pulse tube refrigerating machine is connected.3rd heat bridge 40 is for the high thermal conductivity materials such as red copper make
Become, the refrigerating capacity that three-level cool end heat exchanger 37 is produced is transferred to low temperature side the 3rd regenerator 38 hot junction so as to reach liquid hydrogen temperature
Below area.Low temperature side the 3rd regenerator 38 passes through via low temperature side the first regenerator 25, low temperature side Intermediate Heat Exchanger 26, low temperature side
The helium pressure fluctuation that second regenerator 27, low temperature side cool end heat exchanger 28 are transmitted to is ordered about down, and coordinates suitable phase modulation
Mechanism, reaches liquid helium region.
Embodiment 3
As shown in figure 3, the structure of the v-m type pulse tube refrigerating machine using multistage thermal coupling of embodiment 3, it is high by one
Frequency pressure wave generator 1, two-stage Stirling type pulse tube refrigerating machine, a low frequency v-m type pressure wave generator and a low temperature
Lateral vein tube cooler forms；
First order Stirling Type Pulse Tube Cryocooler in described two-stage Stirling type pulse tube refrigerating machine is by being sequentially connected
In the one-level hot end heat exchanger 2 of described high-frequency pressure wave producer 1 port of export, one-level regenerator 3, one-level cool end heat exchanger 4,
Level pulse tube 5, one-level pulse tube hot end heat exchanger 6, one-level inertia tube 7 and one-level air reservoir 8 form；Described two-stage Stirling type arteries and veins
Second level Stirling Type Pulse Tube Cryocooler in tube cooler is by being sequentially connected to described one-level cool end heat exchanger 4 port of export
10, two grades of cool end heat exchangers 11 of two grades of regenerators, secondary vein washing pipe 12,13, two grades of inertia of secondary vein washing pipe hot end heat exchanger
Pipe 14 and two grades of air reservoirs 15 form；
Described low frequency v-m type pressure wave generator is by the compressor hot end heat exchanger 19 being sequentially connected, compressor side backheat
Device 20, compressor side cool end heat exchanger 21 and across warm area displacer composition, described compressor hot end heat exchanger 19 is by gas even
Adapter road is connected with across warm area displacer upper cavity；Described across warm area displacer is by displacer housing, in displacer shell
Across warm area displacer piston 35 within body is with the motor being fixedly installed in described across warm area displacer piston 35 upper end even
Bar 34 forms；
Described low temperature side pulse tube refrigerating machine is by being sequentially connected to the low of described compressor side cool end heat exchanger 21 port of export
Warm side First Heat Exchanger 24, low temperature side the first regenerator 25, low temperature side Intermediate Heat Exchanger 26, low temperature side the second regenerator 27, low
Warm side cool end heat exchanger 28, low temperature side pulse tube 29, low temperature side pulse tube hot end heat exchanger 30, the first valve 31 and low temperature side gas
Storehouse 33 forms；
Connecting line between described low temperature side pulse tube hot end heat exchanger 30 and the first valve 31 and described across warm area discharge
Equipped with the second valve 32 between connecting line between device upper cavity and compressor hot end heat exchanger 19；
Described compressor side cool end heat exchanger 21 and across warm area displacer and one-level cool end heat exchanger 4 and first order pulse
Pipe 5 is in parallel by the first heat bridge 9；Change in the middle of described two grades of cool end heat exchangers 11 and secondary vein washing pipe 12 and described low temperature side
Hot device 26 is in parallel by the second heat bridge 17.
The present embodiment employs across warm area displacer between hot junction and cold end, and its across warm area displacer piston 35 is driving
Motor connection lever 34 carries out reciprocal low frequency movement under driving, and promotes gas by periodic heat, heat release, has an advantage in that no hot buffering
Pipe, void volume is little, it is possible to achieve bigger pressure oscillation.Compared with room temperature displacer piston 18, across warm area displacer piston 35
There is larger length, its upper end works near room-temperature zone, lower end works in low-temperature space, the temperature of temperature and the first heat bridge 9
Close；It is believed that it is the room temperature displacer piston lengthening.
Embodiment 4
As shown in figure 4, the refrigeration system using multistage thermal coupling v-m type pulse tube refrigerating machine of embodiment 4, it is by one
High-frequency pressure wave producer 1, three-level Stirling Type Pulse Tube Cryocooler, a low frequency v-m type pressure wave generator and one are low
Warm lateral vein tube cooler composition；
First order Stirling Type Pulse Tube Cryocooler in described three-level Stirling Type Pulse Tube Cryocooler is by being sequentially connected
In the one-level hot end heat exchanger 2 of described high-frequency pressure wave producer 1 port of export, one-level regenerator 3, one-level cool end heat exchanger 4,
Level pulse tube 5, one-level pulse tube hot end heat exchanger 6, one-level inertia tube 7 and one-level air reservoir 8 form；Described three-level stirling-type arteries and veins
Second level Stirling Type Pulse Tube Cryocooler in tube cooler is by being sequentially connected to described one-level cool end heat exchanger 4 port of export
10, two grades of cool end heat exchangers 11 of two grades of regenerators, secondary vein washing pipe 12,13, two grades of inertia of secondary vein washing pipe hot end heat exchanger
Pipe 14 and two grades of air reservoirs 15 form；Third level stirling-type pulse tube refrigeration in described three-level Stirling Type Pulse Tube Cryocooler
Machine is by being sequentially connected to the three-level regenerator 36 of described two grades of cool end heat exchanger 11 ports of export, three-level cool end heat exchanger 37, three-level
Pulse tube 41, three pulse tube hot end heat exchanger 42, three-level inertia tube 43 and three-level air reservoir 44 form；
Described low frequency v-m type pressure wave generator is by the compressor hot end heat exchanger 19 being sequentially connected, compressor side backheat
Device 20, compressor side cool end heat exchanger 21 and across warm area displacer composition, described compressor hot end heat exchanger 19 is by gas even
Adapter road is connected with across warm area displacer upper cavity；Described across warm area displacer is by displacer housing, in displacer shell
Across warm area displacer piston 35 within body is with the motor being fixedly installed in described across warm area displacer piston 35 upper end even
Bar 34 forms；
Described low temperature side pulse tube refrigerating machine is by being sequentially connected to the low of described compressor side cool end heat exchanger 21 port of export
Warm side First Heat Exchanger 24, low temperature side the first regenerator 25, low temperature side Intermediate Heat Exchanger 26, low temperature side the second regenerator 27, low
Warm side cool end heat exchanger 28, low temperature side the 3rd regenerator 38, low temperature side the second cool end heat exchanger 39, low temperature side pulse tube 29, low
Warm lateral vein washing pipe hot end heat exchanger 30, the first valve 31 and low temperature side air reservoir 33 form；
Connecting line between described across warm area displacer and compressor hot end heat exchanger 19 and described low temperature side pulse tube heat
Equipped with the second valve 32 between connecting line between end heat exchanger 30 and the first valve 31；Described compressor side cool end heat exchanger 21
It is in parallel by the first heat bridge 9 with across warm area displacer and one-level cool end heat exchanger 4 and first order pulse tube 5；Described two grades
Cool end heat exchanger 11 and secondary vein washing pipe 12 and described low temperature side Intermediate Heat Exchanger 26 are in parallel by the second heat bridge 17；Described
Three-level cool end heat exchanger 37 and three pulse tube 41 and described low temperature side cool end heat exchanger 28 are in parallel by the 3rd heat bridge 40.
The present embodiment employs across warm area displacer between hot junction and cold end, and its across warm area displacer piston 35 is driving
Motor connection lever 34 carries out reciprocal low frequency movement under driving, and promotes gas by periodic heat, heat release, with room temperature displacer piston 18
Compare, across warm area displacer piston 34 has larger length, and its upper end works near room-temperature zone, and lower end works in low temperature
Area, temperature is close with the temperature of the first heat bridge 9.
Claims (8)
1. a kind of refrigeration system using multistage thermal coupling v-m type pulse tube refrigerating machine, it is by a high-frequency pressure wave producer
(1), two-stage Stirling Type Pulse Tube Cryocooler, a low frequency v-m type pressure wave generator and a low temperature side pulse tube refrigeration
Machine forms；
First order Stirling Type Pulse Tube Cryocooler in described two-stage Stirling Type Pulse Tube Cryocooler is by being sequentially connected to
State the one-level hot end heat exchanger (2) of high-frequency pressure wave producer (1) port of export, one-level regenerator (3), one-level cool end heat exchanger
(4), one-level pulse tube (5), one-level pulse tube hot end heat exchanger (6), one-level inertia tube (7) and one-level air reservoir (8) composition；Described
Second level Stirling Type Pulse Tube Cryocooler in two-stage Stirling Type Pulse Tube Cryocooler is cold by being sequentially connected to described one-level
Two grades of regenerators (10) of end heat exchanger (4) port of export, two grades of cool end heat exchangers (11), secondary vein washing pipe (12), secondary vein punchings
Pipe hot end heat exchanger (13), two grades of inertia tubes (14) and two grades of air reservoir (15) compositions；
Described low frequency v-m type pressure wave generator is sequentially communicated in a room temperature displacer by room temperature displacer and by connecting line
The compressor hot end heat exchanger (19) of lower cavity, compressor side regenerator (20), compressor side cool end heat exchanger (21), heat are slow
Washing pipe (23) and thermal buffer tube hot end heat exchanger (22) composition, described thermal buffer tube hot end heat exchanger (22) passes through gas connection pipe
Road is connected with described room temperature displacer upper cavity；Described room temperature displacer by displacer housing, be loaded on displacer housing it
Interior room temperature displacer piston (18) and the motor connecting rod being fixedly installed in described room temperature displacer piston (18) upper end
(34) form；
Described low temperature side pulse tube refrigerating machine is by the low temperature being sequentially connected to described compressor side cool end heat exchanger (21) port of export
Side First Heat Exchanger (24), low temperature side first regenerator (25), low temperature side Intermediate Heat Exchanger (26), low temperature side second regenerator
(27), low temperature side cool end heat exchanger (28), low temperature side pulse tube (29), low temperature side pulse tube hot end heat exchanger (30), the first valve
Door (31) and low temperature side air reservoir (33) composition；
Connecting line between described room temperature displacer and compressor hot end heat exchanger (19) is changed with described low temperature side pulse tube hot junction
Equipped with the second valve (32) between connecting line between hot device (30) and the first valve (31)；
Described compressor side cool end heat exchanger (21) and thermal buffer tube (23) and one-level cool end heat exchanger (4) and first order pulse
Pipe (5) is in parallel by the first heat bridge (9)；
Described two grades of cool end heat exchangers (11) and secondary vein washing pipe (12) and described low temperature side Intermediate Heat Exchanger (26) pass through the
Two heat bridges (17) are in parallel.
2. a kind of refrigeration system using multistage thermal coupling v-m type pulse tube refrigerating machine, it is by a high-frequency pressure wave producer
(1), three-level Stirling Type Pulse Tube Cryocooler, a low frequency v-m type pressure wave generator and a low temperature side pulse tube refrigeration
Machine forms；
First order Stirling Type Pulse Tube Cryocooler in described three-level Stirling Type Pulse Tube Cryocooler is by being sequentially connected to
State the one-level hot end heat exchanger (2) of high-frequency pressure wave producer (1) port of export, one-level regenerator (3), one-level cool end heat exchanger
(4), one-level pulse tube (5), one-level pulse tube hot end heat exchanger (6), one-level inertia tube (7) and one-level air reservoir (8) composition；Described
Second level Stirling Type Pulse Tube Cryocooler in three-level Stirling Type Pulse Tube Cryocooler is cold by being sequentially connected to described one-level
Two grades of regenerators (10) of end heat exchanger (4) port of export, two grades of cool end heat exchangers (11), secondary vein washing pipe (12), secondary vein punchings
Pipe hot end heat exchanger (13), two grades of inertia tubes (14) and two grades of air reservoir (15) compositions；Described three-level stirling-type pulse tube refrigeration
Third level Stirling Type Pulse Tube Cryocooler in machine is by being sequentially connected to the three of described two grades of cool end heat exchanger (11) ports of export
Level regenerator (36), three-level cool end heat exchanger (37), three pulse tube (41), three pulse tube hot end heat exchanger (42), three-level
Inertia tube (43) and three-level air reservoir (44) composition；
Described low frequency v-m type pressure wave generator is sequentially communicated in a room temperature displacer by room temperature displacer and by connecting line
The compressor hot end heat exchanger (19) of lower cavity, compressor side regenerator (20), compressor side cool end heat exchanger (21), heat are slow
Washing pipe (23) and thermal buffer tube hot end heat exchanger (22) composition, described thermal buffer tube hot end heat exchanger (22) passes through gas connection pipe
Road is connected with described room temperature displacer upper cavity；Described room temperature displacer by displacer housing, be loaded on displacer housing it
Interior room temperature displacer piston (18) and the motor connecting rod being fixedly installed in described room temperature displacer piston (18) upper end
(34) form；
Described low temperature side pulse tube refrigerating machine is by the low temperature being sequentially connected to described compressor side cool end heat exchanger (21) port of export
Side First Heat Exchanger (24), low temperature side first regenerator (25), low temperature side Intermediate Heat Exchanger (26), low temperature side second regenerator
(27), low temperature side cool end heat exchanger (28), low temperature side the 3rd regenerator (38), low temperature side second cool end heat exchanger (39), low temperature
Lateral vein washing pipe (29), low temperature side pulse tube hot end heat exchanger (30), the first valve (31) and low temperature side air reservoir (33) composition；
Connecting line between described room temperature displacer and compressor hot end heat exchanger (19) is changed with described low temperature side pulse tube hot junction
Equipped with the second valve (32) between connecting line between hot device (30) and the first valve (31)；
Described compressor side cool end heat exchanger (21) and thermal buffer tube (23) and one-level cool end heat exchanger (4) and first order pulse
Pipe (5) is in parallel by the first heat bridge (9)；
Described two grades of cool end heat exchangers (11) and secondary vein washing pipe (12) and described low temperature side Intermediate Heat Exchanger (26) pass through the
Two heat bridges (17) are in parallel；
Described three-level cool end heat exchanger (37) and three pulse tube (41) and described low temperature side cool end heat exchanger (28) pass through the
Three heat bridges (40) are in parallel.
3. a kind of refrigeration system using multistage thermal coupling v-m type pulse tube refrigerating machine, it is by a high-frequency pressure wave producer
(1), two-stage Stirling Type Pulse Tube Cryocooler, a low frequency v-m type pressure wave generator and a low temperature side pulse tube refrigeration
Machine forms；
First order Stirling Type Pulse Tube Cryocooler in described two-stage Stirling Type Pulse Tube Cryocooler is by being sequentially connected to
State the one-level hot end heat exchanger (2) of high-frequency pressure wave producer (1) port of export, one-level regenerator (3), one-level cool end heat exchanger
(4), one-level pulse tube (5), one-level pulse tube hot end heat exchanger (6), one-level inertia tube (7) and one-level air reservoir (8) composition；Described
Second level Stirling Type Pulse Tube Cryocooler in two-stage Stirling Type Pulse Tube Cryocooler is cold by being sequentially connected to described one-level
Two grades of regenerators (10) of end heat exchanger (4) port of export, two grades of cool end heat exchangers (11), secondary vein washing pipe (12), secondary vein punchings
Pipe hot end heat exchanger (13), two grades of inertia tubes (14) and two grades of air reservoir (15) compositions；
Described low frequency v-m type pressure wave generator is by the compressor hot end heat exchanger (19) being sequentially connected, compressor side regenerator
(20), compressor side cool end heat exchanger (21) and across warm area displacer composition, described compressor hot end heat exchanger (19) passes through gas
Body connecting line is connected with across warm area displacer upper cavity；Described across warm area displacer by displacer housing, be loaded on discharge
Across warm area displacer piston (35) within device housing and the drive being fixedly installed in described across warm area displacer piston (35) upper end
Dynamic motor connection lever (34) composition；
Described low temperature side pulse tube refrigerating machine is by the low temperature being sequentially connected to described compressor side cool end heat exchanger (21) port of export
Side First Heat Exchanger (24), low temperature side first regenerator (25), low temperature side Intermediate Heat Exchanger (26), low temperature side second regenerator
(27), low temperature side cool end heat exchanger (28), low temperature side pulse tube (29), low temperature side pulse tube hot end heat exchanger (30), the first valve
Door (31) and low temperature side air reservoir (33) composition；
Connecting line between described low temperature side pulse tube hot end heat exchanger (30) and the first valve (31) and described across warm area discharge
Equipped with the second valve (32) between connecting line between device upper cavity and compressor hot end heat exchanger (19)；
Described compressor side cool end heat exchanger (21) and across warm area displacer and one-level cool end heat exchanger (4) and first order pulse
Pipe (5) is in parallel by the first heat bridge (9)；
Described two grades of cool end heat exchangers (11) and secondary vein washing pipe (12) and described low temperature side Intermediate Heat Exchanger (26) pass through the
Two heat bridges (17) are in parallel.
4. the refrigeration system using multistage thermal coupling v-m type pulse tube refrigerating machine as described in claim 1 or 3, its feature exists
It is that high thermal conductivity metal material makes in, described first heat bridge (9) and the second heat bridge (17).
5. the refrigeration system using multistage thermal coupling v-m type pulse tube refrigerating machine as described in claim 1 or 3, its feature exists
In described one-level cool end heat exchanger (4) works in liquid nitrogen temperature；Two grades of cool end heat exchangers (11) work in liquid hydrogen warm area；Described
Compressor cool end heat exchanger (21) work in liquid nitrogen temperature；Compressor hot end heat exchanger (19) works in room-temperature zone or passes through
Certain mode of heating works in high-temperature region；Low temperature side cool end heat exchanger (28) works in liquid helium region.
6. a kind of refrigeration system using multistage thermal coupling v-m type pulse tube refrigerating machine, it is by a high-frequency pressure wave producer
(1), three-level Stirling Type Pulse Tube Cryocooler, a low frequency v-m type pressure wave generator and a low temperature side pulse tube refrigeration
Machine forms；
First order Stirling Type Pulse Tube Cryocooler in described three-level Stirling Type Pulse Tube Cryocooler is by being sequentially connected to
State the one-level hot end heat exchanger (2) of high-frequency pressure wave producer (1) port of export, one-level regenerator (3), one-level cool end heat exchanger
(4), one-level pulse tube (5), one-level pulse tube hot end heat exchanger (6), one-level inertia tube (7) and one-level air reservoir (8) composition；Described
Second level Stirling Type Pulse Tube Cryocooler in three-level Stirling Type Pulse Tube Cryocooler is cold by being sequentially connected to described one-level
Two grades of regenerators (10) of end heat exchanger (4) port of export, two grades of cool end heat exchangers (11), secondary vein washing pipe (12), secondary vein punchings
Pipe hot end heat exchanger (13), two grades of inertia tubes (14) and two grades of air reservoir (15) compositions；Described three-level stirling-type pulse tube refrigeration
Third level Stirling Type Pulse Tube Cryocooler in machine is by being sequentially connected to the three of described two grades of cool end heat exchanger (11) ports of export
Level regenerator (36), three-level cool end heat exchanger (37), three pulse tube (41), three pulse tube hot end heat exchanger (42), three-level
Inertia tube (43) and three-level air reservoir (44) composition；
Described low frequency v-m type pressure wave generator is by the compressor hot end heat exchanger (19) being sequentially connected, compressor side regenerator
(20), compressor side cool end heat exchanger (21) and across warm area displacer composition, described compressor hot end heat exchanger (19) passes through gas
Body connecting line is connected with across warm area displacer upper cavity；Described across warm area displacer by displacer housing, be loaded on discharge
Across warm area displacer piston (35) within device housing and the drive being fixedly installed in described across warm area displacer piston (35) upper end
Dynamic motor connection lever (34) composition；
Described low temperature side pulse tube refrigerating machine is by the low temperature being sequentially connected to described compressor side cool end heat exchanger (21) port of export
Side First Heat Exchanger (24), low temperature side first regenerator (25), low temperature side Intermediate Heat Exchanger (26), low temperature side second regenerator
(27), low temperature side cool end heat exchanger (28), low temperature side the 3rd regenerator (38), low temperature side second cool end heat exchanger (39), low temperature
Lateral vein washing pipe (29), low temperature side pulse tube hot end heat exchanger (30), the first valve (31) and low temperature side air reservoir (33) composition；
Connecting line between described across warm area displacer and compressor hot end heat exchanger (19) and described low temperature side pulse tube hot junction
Equipped with the second valve (32) between connecting line between heat exchanger (30) and the first valve (31)；
Described compressor side cool end heat exchanger (21) and across warm area displacer and one-level cool end heat exchanger (4) and first order pulse
Pipe (5) is in parallel by the first heat bridge (9)；
Described two grades of cool end heat exchangers (11) and secondary vein washing pipe (12) and described low temperature side Intermediate Heat Exchanger (26) pass through the
Two heat bridges (17) are in parallel；
Described three-level cool end heat exchanger (37) and three pulse tube (41) and described low temperature side cool end heat exchanger (28) pass through the
Three heat bridges (40) are in parallel.
7. the refrigeration system using multistage thermal coupling v-m type pulse tube refrigerating machine as described in claim 2 or 6, its feature exists
In described first heat bridge (9), the second heat bridge (17) and the 3rd heat bridge (40) make for high thermal conductivity metal material.
8. the refrigeration system using multistage thermal coupling v-m type pulse tube refrigerating machine as described in claim 2 or 6, its feature exists
In described one-level cool end heat exchanger (4) works in the above warm area of liquid nitrogen；Two grades of cool end heat exchangers (11) work in liquid nitrogen and liquid hydrogen
Between warm area；Described compressor cool end heat exchanger (21) works in the above warm area of liquid nitrogen；Compressor hot end heat exchanger (19) work
Make in room-temperature zone or high-temperature region is worked in by certain mode of heating；Low temperature side cool end heat exchanger (28) is cooled to liquid hydrogen temperature in advance
Area, low temperature side second cool end heat exchanger (39) works in liquid helium region.
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| CN201410810779.3A CN104534721B (en) | 2014-12-23 | 2014-12-23 | Refrigerating system adopting multi-level thermal coupling V-M type pulse tube refrigerating machines |
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| CN105865069A (en) * | 2016-04-15 | 2016-08-17 | 中国科学院上海技术物理研究所 | Three-level gas coupled pulse pipe refrigerator designing method based on circuit analogy and entropy analysis |
| CN112212541B (en) * | 2020-09-15 | 2021-10-01 | 中国科学院上海技术物理研究所 | Single-compressor three-cold-head pulse tube refrigerator capable of freely adjusting input power and refrigerating capacity |
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| JP2001248927A (en) * | 2000-03-07 | 2001-09-14 | Sumitomo Heavy Ind Ltd | Low-temperature device using pulse tube refrigeration unit |
| US6532748B1 (en) * | 2000-11-20 | 2003-03-18 | American Superconductor Corporation | Cryogenic refrigerator |
| US7497084B2 (en) * | 2005-01-04 | 2009-03-03 | Sumitomo Heavy Industries, Ltd. | Co-axial multi-stage pulse tube for helium recondensation |
| CN101294752B (en) * | 2007-04-29 | 2011-07-27 | 中国科学院理化技术研究所 | Thermal coupling multilevel pulsatron refrigerating machine |
| JP2009074774A (en) * | 2007-09-25 | 2009-04-09 | Kyushu Univ | Refrigerant-free refrigerating machine and functional thermal binding body |
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| CN101706169B (en) * | 2009-11-16 | 2012-07-11 | 浙江大学 | Thermoacoustically-driven thermally-coupled two-stage pulse tube cooling system |
| CN102937351B (en) * | 2012-11-28 | 2014-08-20 | 浙江大学 | Deep hypothermia regenerator employing carbon nano regeneration filler and pulse tube refrigerator of same |
| CN103075834B (en) * | 2013-01-17 | 2015-02-25 | 浙江大学 | 1-2K composite multistage pulse pipe refrigerating machine for utilizing redundant cold quantity |
| CN203258918U (en) * | 2013-04-25 | 2013-10-30 | 浙江大学 | Free piston type pulse tube refrigerator adopting full carbon aerogel heat regeneration filler |
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