CN106500385B - The application of liquid piston work(reclaiming type pulse tube cooling system and liquid piston wherein - Google Patents
The application of liquid piston work(reclaiming type pulse tube cooling system and liquid piston wherein Download PDFInfo
- Publication number
- CN106500385B CN106500385B CN201611101398.3A CN201611101398A CN106500385B CN 106500385 B CN106500385 B CN 106500385B CN 201611101398 A CN201611101398 A CN 201611101398A CN 106500385 B CN106500385 B CN 106500385B
- Authority
- CN
- China
- Prior art keywords
- liquid piston
- pulse tube
- cooling system
- heat exchanger
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
Landscapes
- 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 the pressure wave generator being linked in sequence successively, indoor temperature end heat exchanger, regenerator, cool end heat exchanger, vascular, vascular hot-side heat exchanger and phase modulation apparatus, 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 liquid piston is equipped in the phase modulation apparatus.In the present invention, by the way that liquid piston is arranged in the phase modulation apparatus to pulse tube cooling system, the adjusting to the phase of refrigeration system is not only realized, moreover it is possible to realize the recycling to work(.
Description
Technical field
The present invention relates to pulse tube refrigerating devices.More particularly, to a kind of liquid carrying out work(recycling using liquid piston
The application of piston work-recovery type pulse tube refrigeration and liquid piston wherein.
Background technology
Vascular refrigerator is invented by the Gifford in the U.S. and Longswoth earliest, is exchanged heat by regenerator, vascular, hot junction
The part such as device, cool end heat exchanger and phase modulation apparatus forms, since refrigeration machine moving component no at low temperature is to avoid
The problems such as sealing, abrasion and vibration under low temperature, thus have many advantages, such as it is compact-sized, vibrate low, long-life, in, sky
Between technology, superconducting electronics, infrared acquisition, Cryomedicine etc. the foreground that has a very wide range of applications.
Although the tempting place of pulse tube refrigerating machine is moving component-displacer which removes low-temperature space, its
Effective adjuster must be added to compensate the function for the displacer being eliminated, so that system becomes complicated, especially adjusted
The presence of phase air reservoir so that the volume of system is larger.And phase modulation apparatus is improving the phase pass between pressure and volume flow rate
While being, a part of sound work(is also consumed, is not made full use of into the sound work(in system, so for work(not being used to recycle
For the vascular refrigerator of device, the cycle efficieny limit is TC/TH, less than the limit cycle effect of ideal Carnot refrigeration cycle
Rate TC/(TH-TC)。
In recent years, pulse tube refrigerating machine is quickly grown in liquid nitrogen temperature and 10K or less 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 10K or less 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 10K extremely low temperature below
Degree is required to improve the input power of pulse tube refrigerating machine, and the sound work(consumed in phase modulation apparatus is also obviously improved so that system
It is less efficient.In addition for 10K low frequency pulse tube system refrigeration machines below, needed for phase modulation angle also significantly improve, phase modulation system
The problem of system also faces phase modulation scarce capacity.So for main problem present in pulse tube refrigerating machine development, feasible side
Method be explore work(recycling phase modulation vascular refrigerator, can solve the problems, such as simultaneously sound power consumption dissipate and phase modulation scarce capacity.
It is existing to utilize the good capacitive reactance of absorber and induction reactance effect, substitution in existing work(recycling phase modulation vascular refrigerator
Air reservoir in conventional vascular refrigeration machine and inertia tube, 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, therefore efficiency of refrigerator is relatively low；Also reliable kinoplaszm amount mould
The impedance boundary that block inertia, inertia tube or valve resistance etc. form pressure oscillation phase-lead volume flow rate is adjusted, and increases tune
Phase ability, but still include the devices such as Hole and air reservoir, system complex and the sound work(for not completely eliminating phase modulation apparatus consumption in system；Also
Have through the phase between the inertance tube adjusting refrigerating device inner pressure wave for setting vascular to 1/4 wavelength and volume flow, saves
It is original to be passively or actively phase modulation apparatus.But this method its to require inertance tube be 1/4 wavelength, and the temperature of refrigeration machine, frequency
Rate and pressure etc. can have an impact wavelength so that the invention is relatively difficult to achieve.
Based on the above deficiency, it is desirable to provide a kind of work(recovering effect is good, simple and compact for structure, phase modulation ability is strong and can dynamic
Adjust the pulse tube cooling system of the phase of pulse tube.
Invention content
First of the present invention is designed to provide a kind of liquid piston work(reclaiming type pulse tube cooling system, by phase modulation
It is equipped with liquid piston in device, realizes while the recycling of the adjusting to the phase of refrigeration system and work((for example, sound work(), simultaneously
Also so that system structure is more compact, easy to use and cooling system high efficiency.
Second object of the present invention is to provide application of the aforesaid liquid piston in the work(recycling of pulse tube cooling system.
To reach above-mentioned first purpose, the present invention uses following technical proposals：
A kind of liquid piston work(reclaiming type pulse tube cooling system, it includes the pressure wave generator being linked in sequence successively, room
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
Pipeline between vascular hot-side heat exchanger or pressure wave generator and indoor temperature end heat exchanger is connected, and liquid is equipped in the phase modulation apparatus
Body piston.
Preferably, the liquid that the liquid piston uses is one kind in room temperature liquid metal, mercury, water and alcohol.More
Preferably, the liquid that the liquid piston uses is room temperature liquid metal or mercury.It is closed for example, room temperature liquid metal can be gallium indium
Gold, gallium-indium-tin alloy etc..The density of aforementioned room temperature liquid metal or mercury is big, under same volume, the inertia of reciprocal concussion generation
Power is also big, in conjunction with the compression-expansion effect to gas, can effectively adjust the phase in pulse tube cooling system and realize returning for work(
It receives；Meanwhile these liquid will not evaporate to polluted gas working medium；In addition, the viscosity of these liquid is small, flow resistance also can phase
Being reduced to for answering is minimum.It is further preferable that the liquid that liquid piston uses is mercury.
Preferably, the phase modulation apparatus is one in interior U-tube, straight tube, helix tube and L-type pipe equipped with liquid piston
Kind.The phase modulation apparatus of the tubulose of the these types of shape of selection, more can effectively realize the adjusting of phase；It is further preferable that described
Phase modulation apparatus is the interior U-tube for being equipped with liquid piston.Not only phase modulation effect is good and can effectively prevent work(for phase modulation apparatus at this time
Loss.
Preferably, it exchanges heat with indoor temperature end in the outlet of the phase modulation apparatus and vascular hot-side heat exchanger or pressure wave generator
The pipeline that pipeline between device is connected is equipped with drag regulator.By the aperture for adjusting drag regulator, it may be convenient to
The rigidity of phase modulation apparatus outlet side gas working medium is adjusted, so that the recycling of work(is optimal value with phase adjusted effect.Into
One step, more preferred drag regulator may be selected from but not limited to one kind in regulating valve, capillary and nozzle.
Pressure wave generator in the present invention can be that low frequency generator is alternatively radio-frequency generator.More preferably pressure wave
Generator can be in GM types low frequency generator, VM types low frequency generator, stirling-type radio-frequency generator and thermoacoustic type generator
It is a kind of.
Preferably, it is connected by inertance tube between the vascular hot-side heat exchanger and phase modulation apparatus, so as to further promote
The adjusting of phase；It is connected by cold head connecting tube between cool end heat exchanger and pulse tube.
Preferably, the gas working medium that the refrigeration system uses is helium.
Preferably, it when the liquid is water or ethyl alcohol, is provided between gas working medium and water or ethyl alcohol in refrigeration systems
Isolation structure；Preferably, the isolation structure is membrane structure.
In the present invention, the preferred ground structure of refrigeration system is one kind in linear type, U-shaped and coaxial type；The refrigeration
System is single-stage pulse tube refrigeration system or twin-stage pulse tube cooling system.
To reach above-mentioned second purpose, the present invention also provides above-mentioned piston liquids in the work(recycling of pulse tube cooling system
Application.
Aforesaid liquid piston is arranged in phase modulation apparatus, the adjusting to phase in pulse tube cooling system is not only realized,
The recycling to work(is also achieved simultaneously.
Beneficial effects of the present invention are as follows：
Phase modulation is carried out by being equipped with liquid piston in phase modulation apparatus in the present invention, it is reciprocal to take full advantage of high density liquid
The inertia force generated and the compression-expansion effect to gas are shaken, phase relation and recycling work(in refrigeration system is adjusted, makes
The efficiency for the system of obtaining is more efficient, compact, easy to use；In addition, due to being not introduced into any other machine using liquid piston phase modulation
Tool component, compared to the problems such as other Active phasing modes, there is no abrasions, the refrigeration machine service life is largely increased；In addition,
The setting of liquid piston also can effectively avoid Gedeon direct currents caused by bidirection air intake.
The extent of deterioration of the inertia force generated when liquid moves back and forth and liquid to work(is taken full advantage of in the present invention
It is low, effectively work(is recycled to form liquid piston；It can not only provide suitable phase relation for regenerator, but also
The limit refrigerating efficiency of system is promoted to the limit cycle efficiency of Carnot refrigeration cycle.
The setting of liquid piston eliminates aperture-air reservoir, major diameter pipe-air reservoir, bidirection air intake in phase modulation apparatus in the present invention
Etc. structures so that it is the more compact structure of pulse tube cooling system, easy to use, and the removal of bidirectional air intake structure effectively prevents
The influence of Gedeon direct currents.
In the present invention not for phase modulation in low frequency pulse tube system refrigeration machine and the small cold pulse tube refrigerating machine of 40K or less warm areas
The problem of foot also all can solve.
Description of the drawings
Specific embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.
Fig. 1 shows the structure of the liquid piston work(reclaiming type pulse tube cooling system of the embodiment of the present invention 1.
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 in Fig. 2
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 implementation mode
In order to illustrate more clearly of the present invention, the present invention is done further with reference to preferred embodiments and drawings
It is bright.Similar component is indicated with identical reference numeral in attached drawing.It will be appreciated by those skilled in the art that institute is specific 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 types low frequency generator, indoor temperature end heat exchanger 2, regenerator 3, cold end exchange heat
Device 4, vascular 6, vascular hot-side heat exchanger 7 and phase modulation apparatus 9.Wherein, pressure wave generator 1 is exchanged heat by connecting tube and indoor temperature end
Device 2 is connected, and cool end heat exchanger 4 is connected by cold head connecting tube 5 with vascular 6, 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 passes through pipeline and exchanges heat with vascular hot junction
Device 7 is connected to, and pipeline is equipped 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：It is sent out 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, to cold
It holds and generates cold at heat exchanger 4.The sound work(come out from vascular hot-side heat exchanger 7 enters U by connecting line from the entrance of U-tube
In type pipe, under the driving for the pressure wave that sound work(is formed, mercury in U-tube it is U-shaped it is interior move reciprocatingly, form liquid and live
Plug.In one pressure wave period, in the concussion process schematic such as Fig. 2 of liquid shown in a~d：It is U-shaped with the increase of pressure wave
When the pressure of arrival end is increased to maximum pressure by balance pressure in pipe, entrance side (left side) liquid levels decline in U-tube, go out
Mouth side (right side) liquid levels increase, 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, at this time 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 by peak with left pressure, the energy release (b) stored in U-tube, work(is recycled to arteries and veins
In pipe；As left pressure is when further dropping to minimum pressure, right side liquid level declines in U-tube, and left side liquid level rises, left
Right liquid level forms height difference H 2 (c), at this point, the gas working medium expansion on the liquid level of right side, continues to do work to vascular；When pressure from
When minimum pressure rises to average pressure (d), the work(stored in vascular is released into U-tube.To complete a pressure wave week
Phase realizes the recycling of work(.In addition, by the inertia mass of aforesaid liquid piston, it can be to vascular outlet pressure wave and quality stream
Phase be adjusted.It wherein,, can easily by controlling to adjust the aperture of valve in the course of work of pulse tube cooling system
Adjust the rigidity of the gas working medium on the right side of U-tube on liquid so that work(is recycled is optimal value with phase adjusted.
Embodiment 2
If Fig. 3 shows the structure of the liquid piston work(reclaiming type pulse tube cooling system of the embodiment of the present invention 2, with implementation
It is essentially identical in example 1, only difference is that：The outlet of phase modulation apparatus 9 is changed by pipeline and pressure wave generator 1 and indoor temperature end
Pipeline between hot device is connected, and the pipeline is equipped with drag regulator, such as regulating valve 8, and the liquid in U-tube closes for gallium indium
Gold, remaining condition are constant.To realize the recycling of work(and the adjusting of the phase to this refrigeration system.In the work of pulse tube cooling system
During work, the aperture of valve 8 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 recycled is optimal value with phase adjusted, and by controlling this regulating valve 8, moreover it is possible to more obviously realize and promote to vascular phase
Adjusting.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention may be used also on the basis of the above description for those of ordinary skill in the art
To make other variations or changes in different ways, all embodiments can not be exhaustive here, it is every to belong to this hair
Row of the obvious changes or variations that bright technical solution is extended out still in protection scope of the present invention.
Claims (8)
1. a kind of liquid piston work(reclaiming type pulse tube cooling system, it includes the pressure wave generator being linked in sequence successively, room temperature
Hold 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 equipped in setting；The liquid that the liquid piston uses is one kind in room temperature liquid metal, water and alcohol；Wherein,
The one kind of the room temperature liquid metal in gallium-indium alloy, gallium-indium-tin alloy and mercury.
2. 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 equipped in liquid piston U-tube, straight tube, helix tube and L-type pipe.
3. liquid piston work(reclaiming type pulse tube cooling system according to claim 1, it is characterised in that：It is filled in the phase modulation
The pipeline that pipeline between the outlet set and vascular hot-side heat exchanger or pressure wave generator and indoor temperature end heat exchanger is connected is equipped with
Drag regulator.
4. liquid piston work(reclaiming type pulse tube cooling system according to claim 3, it is characterised in that：The resistance regulation
Device is one kind in regulating valve, capillary and nozzle.
5. liquid piston work(reclaiming type pulse tube cooling system according to claim 1, it is characterised in that：The pressure wave hair
Raw device is one kind in GM types low frequency generator, VM types low frequency generator, stirling-type radio-frequency generator and thermoacoustic type generator.
6. 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 used is helium.
7. liquid piston work(reclaiming type pulse tube cooling system according to claim 1, it is characterised in that：The liquid is water
Or when mercury, isolation structure is provided between gas working medium and water or mercury in refrigeration systems；The isolation structure is film knot
Structure.
8. liquid piston work(reclaiming type pulse tube cooling system according to claim 1, it is characterised in that：The refrigeration system
Structure be linear type, 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.
Priority Applications (1)
| 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 |
Applications Claiming Priority (1)
| 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106500385A CN106500385A (en) | 2017-03-15 |
| CN106500385B true CN106500385B (en) | 2018-10-30 |
Family
ID=58329289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611101398.3A Active CN106500385B (en) | 2016-12-05 | 2016-12-05 | The application of liquid piston work(reclaiming type pulse tube cooling system and liquid piston wherein |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106500385B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (6)
| 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 |
| CN101706169B (en) * | 2009-11-16 | 2012-07-11 | 浙江大学 | Thermoacoustically-driven thermally-coupled two-stage pulse tube cooling system |
| CN103161712B (en) * | 2011-12-15 | 2015-09-09 | 中国科学院理化技术研究所 | A kind of Double-functional thermo-acoustic compressor system |
| CN106766321B (en) * | 2016-11-22 | 2019-04-09 | 浙江大学 | A kind of vascular refrigerator using novel phase modulating mechanism |
-
2016
- 2016-12-05 CN CN201611101398.3A patent/CN106500385B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106500385A (en) | 2017-03-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103175328B (en) | High frequency pulse tube cooler | |
| JP2007534914A (en) | Mixed phase regulator for coolant management in high performance refrigerant regenerative cooling systems. | |
| JP2015511695A (en) | Device and method for filling a tank | |
| CN108662803A (en) | A kind of vascular refrigerator using microchannel phase modulation apparatus | |
| CN109556318B (en) | Thermoacoustic refrigerator | |
| CN206247682U (en) | Liquid piston work(reclaiming type pulse tube cooling system | |
| CN106500385B (en) | The application of liquid piston work(reclaiming type pulse tube cooling system and liquid piston wherein | |
| JP2007530905A (en) | Pulse tube refrigerator for changing average pressure | |
| JP6529850B2 (en) | Cryogenic refrigerator and operating method of cryogenic refrigerator | |
| CN104296412B (en) | Pulse cooling tube applying liquid working medium | |
| JP6087168B2 (en) | Cryogenic refrigerator | |
| JP3618886B2 (en) | Pulse tube refrigerator | |
| Zhu | Movement of linear compressor and displacer in a displacer pulse tube refrigerator | |
| CN108954891A (en) | Stirling based on eddy-current damping phase modulation/vascular composite refrigerator | |
| CN108050722B (en) | Primary throttling low-temperature refrigeration system for precooling by using energy separation effect of vortex tube | |
| KR101658737B1 (en) | Apparatus for controlling phase in pulse tube refrigerator and pulse tube refrigerator | |
| KR101421045B1 (en) | Pulse tube refrigerator having gas storage unit to which heat exchanger is attached | |
| CN100427848C (en) | Heat sound driving pulse pipe refrigeration machine system | |
| CN204141882U (en) | Use the cold pipe of pulsation of liquid working substance | |
| JPH0674584A (en) | Cryogenic refrigerator and operating method thereof | |
| JP2015031424A (en) | Refrigerating machine | |
| Kaiser et al. | Thermodynamic analysis of an ideal four-valve pulse tube refrigerator | |
| JP2723342B2 (en) | Cryogenic refrigerator | |
| JP2003139426A (en) | Pulse tube type refrigerator | |
| JP2690296B2 (en) | Pulse tube refrigerator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |