CN2430656Y - Cold storage pulse tube refrigerator - Google Patents
Cold storage pulse tube refrigerator Download PDFInfo
- Publication number
- CN2430656Y CN2430656Y CN00207235U CN00207235U CN2430656Y CN 2430656 Y CN2430656 Y CN 2430656Y CN 00207235 U CN00207235 U CN 00207235U CN 00207235 U CN00207235 U CN 00207235U CN 2430656 Y CN2430656 Y CN 2430656Y
- Authority
- CN
- China
- Prior art keywords
- cold storage
- pulse tube
- gas
- heat exchanger
- cold
- 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.)
- Expired - Lifetime
Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000007789 gas Substances 0.000 claims abstract description 16
- 239000001307 helium Substances 0.000 claims abstract description 13
- 229910052734 helium Inorganic materials 0.000 claims abstract description 13
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims abstract description 13
- 230000002792 vascular Effects 0.000 claims description 22
- 238000005057 refrigeration Methods 0.000 claims description 16
- 239000003595 mist Substances 0.000 claims description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 239000001257 hydrogen Substances 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- 229910052754 neon Inorganic materials 0.000 claims description 2
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 claims description 2
- 239000012071 phase Substances 0.000 abstract description 16
- 239000012530 fluid Substances 0.000 abstract description 11
- 239000007790 solid phase Substances 0.000 abstract description 7
- 239000007787 solid Substances 0.000 abstract description 5
- 229910001873 dinitrogen Inorganic materials 0.000 abstract 2
- 238000005191 phase separation Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- UDWPONKAYSRBTJ-UHFFFAOYSA-N [He].[N] Chemical compound [He].[N] UDWPONKAYSRBTJ-UHFFFAOYSA-N 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- 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
- F25B2309/1408—Pulse-tube cycles with pulse tube having U-turn or L-turn type geometrical arrangements
-
- 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
- F25B2309/1412—Pulse-tube cycles characterised by heat exchanger details
-
- 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
- F25B2309/1418—Pulse-tube cycles with valves in gas supply and return lines
-
- 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
- F25B2309/1424—Pulse tubes with basic schematic including an orifice and a reservoir
- F25B2309/14241—Pulse tubes with basic schematic including an orifice reservoir multiple inlet pulse tube
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Containers, Films, And Cooling For Superconductive Devices (AREA)
Abstract
The utility model discloses a cold storage pulse tube refrigerator, which comprises a compressor, a heat generator, a cold end heat exchanger, a pulse tube, a hot end heat exchanger, a small hole valve, a two-way gas inlet valve, and a gas bank, wherein, the end portions of the cold end heat exchanger are respectively provided with a phase separator and a cold storage device. The mixed gas is adopted as operating fluid; the refrigerating gas is helium gas, and condensed gas is nitrogen gas. When refrigerating temperature is lower than a triple point of the nitrogen gas, the cold end of the pulse tube can generate the gas-liquid-solid three phase state, and after the liquid-solid phase is conducted with phase separation, the liquid-solid phase can enter a cold storage device. When the cold storage pulse tube refrigerator is stopped, by means of refrigerating capacity supplied by the cold storage device, a cooled device can normally and stably operate, when the cold storage pulse tube refrigerator conducts dynamic operation, noise disturbance to superconducting devices can be reduced to the minimum.
Description
The utility model relates to refrigeration machine, relates in particular to a kind of cold storage type pulse tube refrigerating machine.
The maximum characteristics of vascular refrigerator are simple in structure, do not have moving component at low-temperature space, and still normally operation when Working fluid phase changing appears in refrigeration area is for the work of heterogeneous fluid provides feasible condition.
Helium and nitrogen are formed mixed working fluid when the 80K warm area is worked with a certain ratio, and helium constantly reduces system temperature as refrigerant gas, and nitrogen promptly can be condensed into liquid after reaching liquefaction point, just solid can occur after reaching its three phase point.The phase-change energy of liquid nitrogen and fixed nitrogen provides very big latent heat, and its value will exceed the refrigeration performance of pure helium working medium under the corresponding temperature.
The purpose of this utility model provides a kind of cold storage type pulse tube refrigerating machine that keeps temperature platform.
The utility model is taked following measures in order to achieve the above object:
Cold storage type pulse tube refrigerating machine comprises compressor, compressor links to each other with regenerator, cool end heat exchanger, vascular, hot end heat exchanger, little ports valve, air reservoir successively, be provided with the bidirection air intake valve at compressor outlet and aperture valve import department, feature is to be provided with phase separator, cold accumulator successively in the cool end heat exchanger end, adopts mist as working gas.
Advantage of the present utility model: 1) adopting mist is working fluid, utilizes the latent heat of phase change of its condensing gas, obtains to be better than the refrigeration performance of pure helium; 2) the three phase point characteristic that can make full use of high boiling component provides stable temperature platform; 3) under the refrigeration machine stopped status, utilize liquid-solid attitude fluid in the cold accumulator inner accumulated, continuing externally provides refrigerating capacity, and these characteristics have application potential in many occasions.Can provide SQUID superconducting quantum interference device (SQUID) that eliminate to survey heart magnetic and brain magnetic because the refrigeration machine running as it, vibration and produce the method for noise jamming; 4) the employing helium is that the cold output of the conventional vascular refrigeration machine cold junction of working medium is to realize that by the heat transfer between helium and the cool end heat exchanger effect is relatively poor.And in the utility model,, improved the heat transfer property of refrigeration machine owing in cold accumulator, have the liquid phase of working fluid and solid phase to exist.
Below in conjunction with accompanying drawing the utility model is elaborated.
Accompanying drawing is a structural representation of the present utility model.
Cold storage type pulse tube refrigerating machine comprises compressor 5, compressor links to each other with regenerator 7, cool end heat exchanger 10, vascular 1, hot end heat exchanger 2, aperture valve 3, air reservoir 4 successively, be provided with bidirection air intake valve 6 at compressor outlet and aperture valve import department, be provided with phase separator 9, cold accumulator 8 in the cool end heat exchanger end successively, adopt mist as working gas.Phase separator adopts the folded system of copper mesh disk to form, and cold accumulator is the container of dress cool guide sheet in.Mist is for 40～80K warm area refrigeration, and it consists of helium and nitrogen (volume ratio≤25% that nitrogen is shared), and for 20～30K warm area refrigeration, it consists of helium and neon or hydrogen.
The conventional vascular refrigeration machine is made up of vascular 1, hot end heat exchanger 2, aperture valve 3, air reservoir 4, compressor 5, bidirection air intake valve 6, regenerator 7, cool end heat exchanger 10, and operation working medium is high-purity helium.Helium produces pressure wave in compressor 5, make flow through regenerator 7 and cool end heat exchanger 10 of a part of gas enter vascular 1, another part gas enters in the vascular 1 by bidirection air intake valve 6 and hot end heat exchanger 2, and then enter air reservoir 4 through aperture valve 3, from compression period compression work gas, enter regenerator and be cooled to cryogenic temperature, enter the vascular swell refrigeration then and obtain low temperature.The main advantage of vascular refrigerator is a movement-less part in vascular 1, and this is for realizing that in vascular refrigerator multiphase flow provides assurance.Under the situation that does not change the vascular cold end structure, the employing mist is a working gas.As an example, we explain its course of work from helium nitrogen mixed working fluid, in the precooling process after refrigeration machine starts, along with the reduction of system temperature, nitrogen in the mist just is condensed into liquid after reaching its liquefaction point, solution-air two-phase state at this moment will occur.Along with the further reduction of cryogenic temperature, liquid-solid phase transformation appears near the three phase point (63.14K) of nitrogen, can obtain near the more stable temperature platform that has nothing to do with thermic load (under certain thermic load) and the component nitrogen three phase point thus.But, caused the unfavorable factor of the temperature fluctuation of (except the vascular cold junction) in vascular and the regenerator owing to have the liquid-solid phase component in the vascular.
Compare with traditional vascular refrigerator, it is working medium that the utility model adopts mist, and the vascular cold junction is transformed, and adds a phase separator 9 and cold accumulator 8 for 10 times at the cool end heat exchanger of vascular 1.It can guarantee that the fluid in vascular 1 and regenerator 7 is a gas phase state so that liquid in the working fluid and solid accumulate in the cold accumulator 8 by phase separator 9, makes the refrigeration machine working stability, avoids temperature fluctuation.
The effect of phase separator is to make gaseous component mobile smooth and easy, and liquid phase is therefrom separated with solid phase components.Can adopt the copper mesh disk to reach this purpose.The effect of cold accumulator is liquid phase and the solid phase components that is used for storing in the working fluid.The contact area that its surface, inside can be improved it and liquid and solid by the method for similar fin further improves heat transfer efficiency.The maximum volume of cold accumulator should be corresponding with the volume after the whole condensation cured of high boiling component in the mist.The volume size of cold accumulator has determined vascular refrigerator effectively to shut down the cooling amount working time.
Claims (3)
1. cold storage type pulse tube refrigerating machine, it comprises compressor [5], compressor links to each other with regenerator [7], cool end heat exchanger [10], vascular [1], hot end heat exchanger [2], little ports valve [3], air reservoir [4] successively, be provided with bidirection air intake valve [6] at compressor outlet and aperture valve import department, it is characterized in that being provided with phase separator [9], cold accumulator [8] successively, adopt mist as working gas in the cool end heat exchanger end.
2. a kind of cold storage type pulse tube refrigerating machine according to claim 1 is characterized in that said phase separator adopts the folded system of copper mesh disk to form, and cold accumulator is the container of dress cool guide sheet in.
3. a kind of cold storage type pulse tube refrigerating machine according to claim 1 and 2 is characterized in that said mist for 40～80K warm area refrigeration, and it consists of helium and nitrogen, and for 20～30K warm area refrigeration, it consists of helium and neon or hydrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00207235U CN2430656Y (en) | 2000-06-21 | 2000-06-21 | Cold storage pulse tube refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00207235U CN2430656Y (en) | 2000-06-21 | 2000-06-21 | Cold storage pulse tube refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2430656Y true CN2430656Y (en) | 2001-05-16 |
Family
ID=33574958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00207235U Expired - Lifetime CN2430656Y (en) | 2000-06-21 | 2000-06-21 | Cold storage pulse tube refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2430656Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100386578C (en) * | 2006-04-28 | 2008-05-07 | 浙江大学 | Pulse tube refrigerator with cold end gas storage |
| CN101551181B (en) * | 2009-05-18 | 2011-01-05 | 浙江大学 | Variable cross-section heat regenerator used in low-temperature refrigerator |
| CN108549143A (en) * | 2018-04-26 | 2018-09-18 | 天津商业大学 | A kind of cryomicroscope observation system |
| CN113454410A (en) * | 2019-01-07 | 2021-09-28 | 费尔南多·约科姆·布兰多 | Device and method for cooling dry ice |
-
2000
- 2000-06-21 CN CN00207235U patent/CN2430656Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100386578C (en) * | 2006-04-28 | 2008-05-07 | 浙江大学 | Pulse tube refrigerator with cold end gas storage |
| CN101551181B (en) * | 2009-05-18 | 2011-01-05 | 浙江大学 | Variable cross-section heat regenerator used in low-temperature refrigerator |
| CN108549143A (en) * | 2018-04-26 | 2018-09-18 | 天津商业大学 | A kind of cryomicroscope observation system |
| CN113454410A (en) * | 2019-01-07 | 2021-09-28 | 费尔南多·约科姆·布兰多 | Device and method for cooling dry ice |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |