CN106500385A - The application wherein of liquid piston work(reclaiming type pulse tube cooling system and liquid piston - Google Patents
The application wherein of liquid piston work(reclaiming type pulse tube cooling system and liquid piston Download PDFInfo
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- CN106500385A CN106500385A CN201611101398.3A CN201611101398A CN106500385A CN 106500385 A CN106500385 A CN 106500385A CN 201611101398 A CN201611101398 A CN 201611101398A CN 106500385 A CN106500385 A CN 106500385A
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- liquid piston
- pulse tube
- cooling system
- work
- heat exchanger
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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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The invention discloses a kind of liquid piston work(reclaiming type pulse tube cooling system, it includes pressure wave generator, indoor temperature end heat exchanger, regenerator, cool end heat exchanger, vascular, vascular hot-side heat exchanger and the phase modulation apparatus being linked in sequence successively, wherein：Pipeline between the outlet of the phase modulation apparatus and vascular hot-side heat exchanger or pressure wave generator and indoor temperature end heat exchanger is connected, and is provided with liquid piston in the phase modulation apparatus.In the present invention, by liquid piston being arranged in the phase modulation apparatus to pulse tube cooling system, not only achieve the regulation of the phase place to refrigeration system, moreover it is possible to realize the recovery to work(.
Description
Technical field
The present invention relates to pulse tube refrigerating device.More particularly, to a kind of liquid for carrying out work(recovery using liquid piston
The application wherein of piston work-recovery type pulse tube refrigeration and liquid piston.
Background technology
Vascular refrigerator is invented by the Gifford and Longswoth in the U.S. earliest, and which is by regenerator, vascular, hot junction heat exchange
The part such as device, cool end heat exchanger and phase modulation apparatus constitutes, as the refrigeration machine is at low temperature without moving component so as to avoiding
The problems such as sealing, abrasion and vibration under low temperature, so there is compact conformation, vibrate low, long-life, empty
Between the aspect such as technology, superconducting electronics, infrared acquisition, Cryomedicine have a very wide range of applications prospect.
Although the tempting part of pulse tube refrigerating machine is the moving component-displacer which removes low-temperature space, its
Effective actuator must be added to compensate the function of the displacer being eliminated, so that system becomes complicated, particularly adjusted
The presence of phase air reservoir so that the volume of system is larger.And phase modulation apparatus are improving the pass of the phase place between pressure and volume flow rate
While being, a part of sound work(is also consumes, do not make full use of the sound work(in entrance system, so reclaiming for work(is provided without
For the vascular refrigerator of device, its cycle efficieny limit is TC/TH, imitate less than the limit cycle of preferable Carnot kind of refrigeration cycle
Rate TC/(TH-TC).
In recent years, pulse tube refrigerating machine is quickly grown in liquid nitrogen temperature and below 10K warm areas.Wherein liquid nitrogen temperature is main
Developing direction is High cooling power Stirling Type Pulse Tube Cryocooler, and the main developing direction of below 10K warm areas is GM low frequency pulse tube systems
Refrigeration machine and multi-stage stirling type pulse tube refrigerating machine.High cooling power is obtained in liquid nitrogen temperature and obtains the extremely low temperature of below 10K
Degree, is required to the input power for improving pulse tube refrigerating machine, and the sound work(consumed in phase modulation apparatus is also obviously improved so that system
Less efficient.In addition for the low frequency pulse tube system refrigeration machine of below 10K, the phase modulation angle needed for which is also significantly improved, phase modulation system
System also faces the problem of phase modulation scarce capacity.So for subject matter, feasible side present in pulse tube refrigerating machine development
Method is to explore work(to reclaim phase modulation vascular refrigerator, can solve the problems, such as that sound power consumption dissipates and phase modulation scarce capacity simultaneously.
Existing work(is reclaimed in phase modulation vascular refrigerator, using the good capacitive reactance of adsorber and induction reactance effect, is replaced
Air reservoir and inertia tube in conventional vascular refrigeration machine, so as to reach refrigeration machine work needed for optimal phase shift amount, but the device without
Method solves the problems, such as that sound work(dissipates in phase modulation apparatus in pulse tube, and therefore efficiency of refrigerator is relatively low；Also reliable kinoplaszm amount mould
Block inertia, inertia tube or valve resistance etc. form the impedance boundary of pressure oscillation phase-lead volume flow rate and adjust, and increased tune
Phase ability, but still comprising the device such as Hole and air reservoir in system, system complex and is not completely eliminated the sound work(of phase modulation apparatus consumption；Also
There is the inertance tube by vascular to be set to 1/4 wavelength to adjust the phase place between refrigerating device inner pressure wave and volume flow, save
Original it is passively or actively phase modulation apparatus.But the method its require inertance tube for 1/4 wavelength, and the temperature of refrigeration machine, frequently
Rate and pressure etc. can produce impact to wavelength so that the invention is relatively difficult to achieve.
Based on above not enough, it is desirable to provide a kind of work(recovering effect is good, simple and compact for structure, phase modulation ability strong and can dynamic
Adjust the pulse tube cooling system of the phase place of pulse tube.
Content of the invention
First purpose of the present invention is to provide a kind of liquid piston work(reclaiming type pulse tube cooling system, by phase modulation
Liquid piston is provided with device, it is achieved that while the regulation and the recovery of work((for example, sound work() to the phase place of refrigeration system, while
Also so that system structure is more compact, convenient use and cooling system high efficiency.
Second object of the present invention is to provide application of the aforesaid liquid piston in the work(of pulse tube cooling system is reclaimed.
For reaching above-mentioned first purpose, the present invention adopts following technical proposals：
A kind of liquid piston work(reclaiming type pulse tube cooling system, it includes pressure wave generator, the room being linked in sequence successively
Warm end heat exchanger, regenerator, cool end heat exchanger, vascular, vascular hot-side heat exchanger and phase modulation apparatus, the outlet of the phase modulation apparatus
It is connected with the pipeline between vascular hot-side heat exchanger or pressure wave generator and indoor temperature end heat exchanger, in the phase modulation apparatus, is provided with liquid
Body piston.
Preferably, the liquid that the liquid piston is adopted is for the one kind in room temperature liquid metal, hydrargyrum, water and ethanol.More
Preferably, the liquid that the liquid piston is adopted is for room temperature liquid metal or hydrargyrum.For example, room temperature liquid metal can be closed for gallium indium
Gold, gallium-indium-tin alloy etc..The density of aforementioned room temperature liquid metal or hydrargyrum is big, under same volume, the inertia that reciprocal concussion is produced
Power is also big, in conjunction with the compression-expansion effect to gas, can effectively adjust the phase place in pulse tube cooling system and realize returning for work(
Receive；Meanwhile, these liquid will not be evaporated so as to dusty gass working medium；Additionally, the viscosity of these liquid is little, flow resistance also can phase
Being reduced to for answering is minimum.It is further preferable that the liquid that liquid piston is adopted is for hydrargyrum.
Preferably, the phase modulation apparatus be in be provided with U-tube, straight tube, serpentine pipe and the L-type pipe of liquid piston one
Kind.The phase modulation apparatus of the tubulose of this several shape are selected, the regulation of phase place more can be effectively realized；It is further preferable that described
Phase modulation apparatus are the interior U-tube for being provided with liquid piston.Not only phase modulation effect is good and can effectively prevent work(for phase modulation apparatus now
Loss.
Preferably, the outlet in the phase modulation apparatus is exchanged heat with indoor temperature end with vascular hot-side heat exchanger or pressure wave generator
The pipeline that pipeline between device is connected is provided with drag regulator.By adjusting the aperture of drag regulator, in that context it may be convenient to
The rigidity of phase modulation apparatus outlet side gas working medium is adjusted, so that the recovery of work(is optimal value with phase adjusted effect.Enter
One step ground, one kind that more preferred drag regulator is selected from but is not limited in regulating valve, capillary tube and nozzle.
Pressure wave generator in the present invention can be alternatively high frequency generator for low frequency generator.More preferably pressure wave
Generator can be in GM type low frequency generators, VM type low frequency generators, stirling-type high frequency generator and thermoacoustic type generator
A kind of.
Preferably, connected by inertance tube between the vascular hot-side heat exchanger and phase modulation apparatus, so as to further promote
The regulation of phase place；Connected by cold head connecting tube between cool end heat exchanger and pulse tube.
Preferably, the gas working medium that the refrigeration system is adopted is for helium.
Preferably, the liquid is water or during ethanol, is provided between gas working medium in refrigeration systems and water or ethanol
Isolation structure；Preferably, the isolation structure is membrane structure.
In the present invention, the preferred ground structure of the refrigeration system is linear type, the one kind in U-shaped and coaxial type；The refrigeration
System is single-stage pulse tube refrigeration system or twin-stage pulse tube cooling system.
For reaching above-mentioned second purpose, the present invention also provides above-mentioned piston liquid in the work(of pulse tube cooling system is reclaimed
Application.
Aforesaid liquid piston is arranged in phase modulation apparatus, the regulation to phase place in pulse tube cooling system is not only achieved,
Recovery to work(is also achieved simultaneously.
Beneficial effects of the present invention are as follows：
Carry out phase modulation by liquid piston is provided with phase modulation apparatus in the present invention, take full advantage of high density liquid reciprocal
Inertia force and the compression-expansion effect to gas that concussion is produced, adjust the phase relation in refrigeration system and reclaim work(, make
System efficiency is more efficient, compact, convenient use；Further, since being not introduced into any other machine using liquid piston phase modulation
Tool part, for comparing other Active phasing modes, does not have, the refrigeration machine life-span is largely increased；Additionally,
The setting of liquid piston can also be prevented effectively from the Gedeon direct currents that bidirection air intake causes.
The inertia force produced when liquid is moved back and forth, and extent of deterioration of the liquid to work(is taken full advantage of in the present invention
Low, effectively work(is reclaimed so as to form liquid piston；Which not only can provide suitable phase relation for regenerator, also so that
The limit refrigerating efficiency of system is promoted to the limit cycle efficiency of Carnot kind of refrigeration cycle.
In the present invention, in phase modulation apparatus, the setting of liquid piston eliminates aperture-air reservoir, major diameter pipe-air reservoir, bidirection air intake
Etc. structure so that the more compact structure of pulse tube cooling system, convenient use, and the removal of bidirectional air intake structure effectively prevent
The impact of Gedeon direct currents.
For in low frequency pulse tube system refrigeration machine and the little cold pulse tube refrigerating machine of below 40K warm areas, phase modulation is not in the present invention
The problem of foot also all can solve.
Description of the drawings
Below in conjunction with the accompanying drawings the specific embodiment of the present invention is described in further detail.
Fig. 1 shows the structure of the liquid piston work(reclaiming type pulse tube cooling system of the embodiment of the present invention 1.
In Fig. 2, a～d shows U-shaped intraluminal fluid in the liquid piston work(reclaiming type pulse tube cooling system of the embodiment of the present invention 1
Body shakes process.
Fig. 3 shows the structure of the liquid piston work(reclaiming type pulse tube cooling system of the embodiment of the present invention 2.
Specific embodiment
In order to be illustrated more clearly that the present invention, the present invention is done further with reference to preferred embodiments and drawings
Bright.In accompanying drawing, similar part is indicated with identical reference.It will be appreciated by those skilled in the art that institute is concrete below
The content of description is illustrative and be not restrictive, and should not be limited the scope of the invention with this.
Embodiment 1
As Fig. 1 shows the structure of the liquid piston work(reclaiming type pulse tube cooling system of the embodiment of the present invention 1：It include according to
The secondary pressure wave generator 1 being linked in sequence, for example, VM type low frequency generators, indoor temperature end heat exchanger 2, the heat exchange of regenerator 3, cold end
Device 4, vascular 6, vascular hot-side heat exchanger 7 and phase modulation apparatus 9.Wherein, pressure wave generator 1 is exchanged heat with indoor temperature end by connecting tube
Device 2 is connected, and cool end heat exchanger 4 is connected with vascular 6 by cold head connecting tube 5, and vascular hot-side heat exchanger 7 (is equipped with phase modulation apparatus 9
The U-tube of liquid mercury) entrance connected by connecting line, the outlet of phase modulation apparatus 9 is exchanged heat with vascular hot junction by pipeline
Device 7 is connected, and pipeline is provided with drag regulator regulating valve 8.Gas working medium in pulse tube cooling system is helium.
The course of work of aforesaid liquid piston work-recovery type pulse tube refrigeration is as follows：Send from pressure wave generator 1
Sound work(sequentially enters indoor temperature end heat exchanger 2, regenerator 3, cool end heat exchanger 4, vascular 6 and vascular hot-side heat exchanger 7, so as to cold
Cold is produced at the heat exchanger 4 of end.U is entered from the entrance of U-tube by connecting line from the sound work(out of vascular hot-side heat exchanger 7
In type pipe, under the driving of the pressure wave that sound work(is formed, hydrargyrum in U-tube U-shaped interior move reciprocatingly, form liquid and live
Plug.In one pressure period of wave, in the concussion process schematic such as Fig. 2 of liquid shown in a～d：With the increase of pressure wave, U-shaped
When in pipe, the pressure of arrival end is by pressure rise is balanced to maximum pressure, in U-tube, entrance side (left side) liquid levels decline, and go out
Mouth side (right side) liquid levels are raised, and left and right liquid levels form height difference H 1 (a), while the gas working medium on the liquid level of right side
Helium is compressed, now work(in phase modulation apparatus with the compression energy of gas working medium in the gravitional force of liquid and right side U-tube
Storage；When dropping to average pressure with left pressure by peak, the energy stored in U-tube discharges (b), and work(is recycled to arteries and veins
In pipe；As left pressure is when further dropping to minimum pressure, in U-tube, right side liquid level declines, and left side liquid level rises, left
Right liquid level forms height difference H 2 (c), and now, the gas working medium on the liquid level of right side expands, and continues to do work vascular；When pressure from
When minimum pressure rises to average pressure (d), the work(stored in vascular is released in U-tube.So as to complete a pressure wave week
Phase, it is achieved that the recovery of work(.Additionally, by the inertia mass of aforesaid liquid piston, can be to vascular outlet pressure ripple and quality stream
Phase place be adjusted.Wherein, in the course of work of pulse tube cooling system, by controlling to adjust the aperture of valve, can easily
Adjust the rigidity of the gas working medium on the right side of U-tube on liquid so that work(is reclaimed and value is optimal with phase adjusted.
Embodiment 2
As Fig. 3 shows the structure of the liquid piston work(reclaiming type pulse tube cooling system of the embodiment of the present invention 2, itself and enforcement
Essentially identical in example 1, only difference is that：The outlet of phase modulation apparatus 9 is changed with pressure wave generator 1 and indoor temperature end by pipeline
Pipeline between hot device is connected, and the pipeline is provided with drag regulator, such as regulating valve 8, and the liquid in U-tube is closed for gallium indium
Gold, remaining condition are constant.So as to realize the recovery of work(and the regulation of phase place to this refrigeration system.Work in pulse tube cooling system
The aperture of valve 8 during work, is controlled to adjust, the rigidity of the gas working medium on the right side of U-tube on liquid can easily be adjusted so that
Work(is reclaimed and is optimal value with phase adjusted, and by controlling this regulating valve 8, moreover it is possible to more obviously realize promoting to vascular phase place
Regulation.
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not right
The restriction of embodiments of the present invention, for those of ordinary skill in the field, may be used also on the basis of the above description
To make other changes in different forms, all of embodiment cannot be exhaustive here, every belong to this
Bright technical scheme extended obvious change or change still in protection scope of the present invention row.
Claims (10)
1. a kind of liquid piston work(reclaiming type pulse tube cooling system, it includes pressure wave generator, the room temperature being linked in sequence successively
End heat exchanger, regenerator, cool end heat exchanger, vascular, vascular hot-side heat exchanger and phase modulation apparatus, it is characterised in that：The phase modulation
Pipeline between the outlet of device and vascular hot-side heat exchanger or pressure wave generator and indoor temperature end heat exchanger is connected, the phase modulation dress
Liquid piston is provided with putting.
2. liquid piston work(reclaiming type pulse tube cooling system according to claim 1, it is characterised in that：The liquid piston
The liquid for adopting is the one kind in room temperature liquid metal, hydrargyrum, water and ethanol.
3. liquid piston work(reclaiming type pulse tube cooling system according to claim 1, it is characterised in that：The phase modulation apparatus
For interior one kind being provided with liquid piston U-tube, straight tube, serpentine pipe and L-type pipe；Preferably U-tube.
4. liquid piston work(reclaiming type pulse tube cooling system according to claim 1, it is characterised in that：Fill in the phase modulation
The pipeline that pipeline between the outlet that puts and vascular hot-side heat exchanger or pressure wave generator and indoor temperature end heat exchanger is connected is provided with
Drag regulator.
5. liquid piston work(reclaiming type pulse tube cooling system according to claim 4, it is characterised in that：The resistance regulation
Device is the one kind in regulating valve, capillary tube and nozzle.
6. liquid piston work(reclaiming type pulse tube cooling system according to claim 1, it is characterised in that：The pressure wave is sent out
Raw device is the one kind in GM type low frequency generators, VM type low frequency generators, stirling-type high frequency generator and thermoacoustic type generator.
7. liquid piston work(reclaiming type pulse tube cooling system according to claim 1, it is characterised in that：The refrigeration system
The gas working medium for adopting is for helium.
8. liquid piston work(reclaiming type pulse tube cooling system according to claim 2, it is characterised in that：The liquid is water
Or during hydrargyrum, between gas working medium in refrigeration systems and water or hydrargyrum, it is provided with isolation structure；Preferably, the isolation structure
For membrane structure.
9. liquid piston according to claim 1 is total to reclaiming type pulse tube cooling system, it is characterised in that：The refrigeration system
Structure be linear type, the one kind in U-shaped and coaxial type；The refrigeration system is single-stage pulse tube refrigeration system or twin-stage vascular system
Cooling system.
10. application of the liquid piston in the work(of pulse tube cooling system is reclaimed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611101398.3A CN106500385B (en) | 2016-12-05 | 2016-12-05 | The application of liquid piston work(reclaiming type pulse tube cooling system and liquid piston wherein |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611101398.3A CN106500385B (en) | 2016-12-05 | 2016-12-05 | The application of liquid piston work(reclaiming type pulse tube cooling system and liquid piston wherein |
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| CN106500385A true CN106500385A (en) | 2017-03-15 |
| CN106500385B CN106500385B (en) | 2018-10-30 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1780557A3 (en) * | 1990-07-24 | 1992-12-07 | Дpуцkий Aлekceй Bacильebич | Method for converting gas inner energy to heat in compression- expanding machine with free liquid piston |
| JPH0814678A (en) * | 1994-06-24 | 1996-01-19 | Daido Hoxan Inc | Pulse tube freezer machine with liquid piston |
| CN1710354A (en) * | 2005-06-30 | 2005-12-21 | 上海交通大学 | L-shape vessel refrigerator |
| CN101706169A (en) * | 2009-11-16 | 2010-05-12 | 浙江大学 | Thermoacoustically-driven thermally-coupled two-stage pulse tube cooling system |
| CN103161712A (en) * | 2011-12-15 | 2013-06-19 | 中国科学院理化技术研究所 | Double-functional thermo-acoustic compressor system |
| CN106766321A (en) * | 2016-11-22 | 2017-05-31 | 浙江大学 | A kind of vascular refrigerator using new phase modulating mechanism |
| CN206247682U (en) * | 2016-12-05 | 2017-06-13 | 中国科学院理化技术研究所 | Liquid piston work(reclaiming type pulse tube cooling system |
-
2016
- 2016-12-05 CN CN201611101398.3A patent/CN106500385B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1780557A3 (en) * | 1990-07-24 | 1992-12-07 | Дpуцkий Aлekceй Bacильebич | Method for converting gas inner energy to heat in compression- expanding machine with free liquid piston |
| JPH0814678A (en) * | 1994-06-24 | 1996-01-19 | Daido Hoxan Inc | Pulse tube freezer machine with liquid piston |
| CN1710354A (en) * | 2005-06-30 | 2005-12-21 | 上海交通大学 | L-shape vessel refrigerator |
| CN101706169A (en) * | 2009-11-16 | 2010-05-12 | 浙江大学 | Thermoacoustically-driven thermally-coupled two-stage pulse tube cooling system |
| CN103161712A (en) * | 2011-12-15 | 2013-06-19 | 中国科学院理化技术研究所 | Double-functional thermo-acoustic compressor system |
| CN106766321A (en) * | 2016-11-22 | 2017-05-31 | 浙江大学 | A kind of vascular refrigerator using new phase modulating mechanism |
| CN206247682U (en) * | 2016-12-05 | 2017-06-13 | 中国科学院理化技术研究所 | Liquid piston work(reclaiming type pulse tube cooling system |
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| CN106500385B (en) | 2018-10-30 |
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