CN109386981A - A kind of straight line vascular cold finger and the integrated anti-cold-shrinkage device coupled of Dewar - Google Patents
A kind of straight line vascular cold finger and the integrated anti-cold-shrinkage device coupled of Dewar Download PDFInfo
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- CN109386981A CN109386981A CN201811387876.0A CN201811387876A CN109386981A CN 109386981 A CN109386981 A CN 109386981A CN 201811387876 A CN201811387876 A CN 201811387876A CN 109386981 A CN109386981 A CN 109386981A
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- cold
- vascular
- dewar
- straight line
- hot end
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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)
- Thermotherapy And Cooling Therapy Devices (AREA)
Abstract
The invention discloses the anti-cold-shrinkage devices that a kind of straight line vascular cold finger is coupled with Dewar, including straight line vascular cold finger, regenerator hot end flange, vascular hot end flexible flange and Dewar ice chest.The cold head of straight line vascular cold finger is connect by flexible cooling chain with the cold platform of Dewar ice chest, the side of regenerator hot end flange and Dewar ice chest, the other side welding of vascular flexible flange and Dewar ice chest.Straight line vascular refrigerator obtains the less leakage rate high vacuum environment of Dewar ice chest by the welding of two flanges and Dewar ice chest；Vascular hot end flexible flange has certain flexibility in the axis direction of straight line vascular, when cooling down shrinkage will occur for straight line vascular cold finger, axial deformation can accordingly occur for vascular hot end flexible flange, reduce the shrinkage stress of straight line vascular cold finger, it is ensured that the high-reliability of vascular cold finger and the sealing of Dewar ice chest.The advantages of invention, is that structure is simple, easy processing is realized, is conducive to improve the reliability that straight line vascular cold finger is coupled with Dewar ice chest.
Description
Technical field:
The present invention is under the jurisdiction of space remote sensing field, and in particular to a kind of straight line vascular cold finger and Dewar be integrated, and resisting of coupling is cold
Compression apparatus.
Background technique:
Vascular refrigerator is a kind of novel regenerating type low-temperature refrigerator, is proposed the 1960s and in the eighties
Phase starts to be rapidly developed, aerospace, superconduction industry, cryotronics, in terms of be widely applied.
It eliminates the cold end displacer being widely used in Stirling or G-M refrigeration machine, and with a completely passive blank pipe (arteries and veins
Pipe) it replaces；It realizes system by the running of hot end phase modulating mechanism (such as aperture, air reservoir, fine tuning valve, nozzle, inertia tube)
The phase difference of cold required pressure wave and quality stream.It completely eliminates the moving component of cold end, realize cold end low vibration,
It is low to interfere and without abrasion.It is different from the space geometry of regenerator arrangement according to pulse tube, pulse tube refrigerating machine is divided into U-shaped, same
Spindle-type and linear type three categories.Compared to U-shaped, co-axial pulse tube, linear type vascular regenerator and pulse tube are located at straight line
On, the flow resistance of cold head is reduced to the maximum extent, and air-flow is not required to turn back in cold end, avoid and air-flow is provided turns back institute
Bring dead volume, also to end air flow with the smallest disturbance, thus efficiency highest, in space application field, since power limits
System is very high to the efficiency requirements of refrigeration machine, thus linear type vascular refrigerator obtains important application in terms of space flight.
Straight line vascular refrigerator vascular regenerator is located in a straight line with pulse tube, and cold head is located at intermediate, hot end and is located at
Both ends.The less leakage rate high vacuum environment of Dewar ice chest is obtained by the welding of two flanges and Dewar ice chest in two hot ends, but
When the cooling of straight line vascular, shrinkage will occur for cold finger, make at vascular hot end and Dewar ice chest flange-interface since shrinkage stress exists
The problems such as interface leakage problem and cold finger deformation are even broken.This is just needed to vascular hot end and Dewar ice chest interface flange knot
Structure optimizes, to solve the problems, such as that shrinkage stress bring is various.
Summary of the invention:
The straight line vascular cold finger that simple, easy processing that the object of the present invention is to provide a kind of structures is realized is integrated with Dewar to be coupled
Anti- cold-shrinkage device, solve the stress problem of cold finger shrinkage generation when existing straight line vascular cold finger and Dewar are integrated couple cooling.
Straight line vascular cold finger of the present invention integrates the anti-cold-shrinkage device coupled, including Dewar ice chest shell 1, cold platform with Dewar
2, cold chain 3, air reservoir 4, inertia tube 5, pulse tube hot end heat exchanger 6, pulse tube hot end flexible flange 7, pulse tube 8, cold head (vascular
Cold end) 8-1, vascular regenerator 9, regenerator hot end flange 10, regenerator hot end 11, compressor 12；Wherein:
The vascular refrigerator uses straight line vascular, and vascular regenerator 9 is located in a straight line with pulse tube 8, cold head 8-1
It is located at two sides positioned at intermediate, pulse tube hot end 6 and regenerator hot end 11.The cold head 8-1 of straight line vascular cold finger 8 passes through flexible cold
Chain 3 is connect with the cold platform 2 in Dewar ice chest shell 1.Vascular refrigerator, which provides cooling capacity for Dewar ice chest cold platform 2, makes its acquisition
Constant low temperature needs vacuum inside Dewar when ground test.Straight line vascular refrigerator passes through pulse tube hot end flange 7, regenerator
Hot end flange 10 and Dewar ice chest shell 1 carry out the less leakage rate high vacuum environment that welding obtains Dewar ice chest.It is dropped to reduce cold finger 8
The shrinkage stress generated when warm guarantees that Dewar ice chest high vacuum environment, pulse tube hot end flange 7 are made as flexible flange, work as arteries and veins
When shrinkage occurs in temperature-fall period for pipe cold finger material, the diaphragm in flexible flange with circumference wave structure deforms,
It absorbs temperature change and brings the variation of expanding with heat and contract with cold of cold finger, to reduce the shrinkage stress of cold finger receiving, enhance leakproofness
Energy.
The vascular is linear type vascular, and regenerator is located in a straight line with pulse tube, and air-flow is not required to turn back in cold end,
The flow resistance of cold head is reduced to greatest extent, and to the disturbance of end air flow minimum, efficiency highest.
Pulse tube hot end flexible flange, i.e., increase circumference ripple struction on flange diaphragm, and diaphragm thickness is
0.3mm~0.5mm.
The present invention has the advantages that the advantages of invention, is that straight line vascular cold finger integrates vascular hot end when coupling with Dewar
Flexible flange structure is simple, easy processing is realized, and due to having certain flexibility in the axial direction, can deformation occurs, can effectively drop
The shrinkage stress of low straight line vascular cold finger is conducive to improve the reliability that straight line vascular cold finger is coupled with Dewar ice chest.
Detailed description of the invention:
Fig. 1 is a kind of straight line vascular cold finger and the integrated anti-cold-shrinkage device schematic diagram coupled of Dewar；
In figure: 1, Dewar ice chest shell；2, cold platform；3, cold chain；4, air reservoir；5, inertia tube；6, pulse tube hot end exchanges heat
Device；7, pulse tube hot end flexible flange；8, vascular；8-1, cold head；9, regenerator；10, regenerator hot end flange；11, regenerator
Hot end；12, compressor
Fig. 2 is a kind of straight line vascular cold finger and the integrated anti-shrinkage flange arrangement schematic diagram coupled of Dewar；
In figure: 7-1, flange diaphragm；7-2, flange；7-3, ripple struction
Fig. 3 is a kind of straight line vascular cold finger and the integrated anti-cold-shrinkage device schematic diagram coupled of Dewar；
Wherein: a figure is diaphragm normal temperature state, and b figure is diaphragm low-temperature condition.
Specific embodiment:
The present invention is further described with reference to the accompanying drawings and embodiments.
As shown in Figure 1, the present invention is a kind of straight line vascular cold finger and the integrated anti-cold-shrinkage device coupled of Dewar, including Dewar
Ice chest shell 1, cold platform 2, cold chain 3, air reservoir 4, inertia tube 5, pulse tube hot end heat exchanger 6, pulse tube hot end flexible flange 7,
Vascular 8, cold head 8-1, regenerator 9, regenerator hot end flange 10, regenerator hot end 11, compressor 12.
Vascular refrigerator uses straight line vascular, and vascular regenerator 10 is located in a straight line with pulse tube 8, in cold head 8-1
Between, pulse tube hot end 6 and regenerator hot end 11 be located at two sides.The cold head 8-1 of straight line vascular cold finger 8 passes through flexible cooling chain 3 and Du
The cold platform 2 of watt ice chest connects.Vascular refrigerator, which provides cooling capacity for the cold platform 2 in Dewar ice chest shell 1, keeps its acquisition constant
Low temperature just needs to be packaged using Dewar at this time.Straight line vascular refrigerator passes through pulse tube hot end flange 7, regenerator hot end
Flange 10 and Dewar ice chest shell 1 carry out the less leakage rate high vacuum environment that welding obtains Dewar ice chest.When to reduce cold finger cooling
The shrinkage stress of generation guarantees Dewar ice chest high vacuum environment, and pulse tube hot end flange 7 is made as flexible flange, when vascular is cold
When referring to that shrinkage occurs in temperature-fall period for material, the variation of expanding with heat and contract with cold that temperature change brings cold finger is absorbed, to reduce cold
Refer to the shrinkage stress born, enhances vascular with Dewar ice chest and couple sealing performance.
As shown in Fig. 2, the present invention relates to a kind of straight line vascular cold fingers and the integrated anti-shrinkage flange coupled of Dewar, by arteries and veins
Washing pipe hot end flange 7 is made as flexible flange, and the diaphragm 7-2 with circumference wave structure 7-3 occurs in flexible flange 7-1
Deformation, to reduce the shrinkage stress of cold finger receiving.
As shown in figure 3, the present invention relates to a kind of straight line vascular cold finger with the integrated anti-shrinkage flange coupled of Dewar in room temperature
Structure a is compared with low-temperature deformation structure b, and diaphragm deforms under stress when low temperature, and diaphragm protrusion is deformation
Displacement provides space, still can guarantee good sealing between vascular and Dewar ice chest after diaphragm deformation.
Finally, it should be noted that It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, on
It states and is merely illustrated the principles of the invention described in embodiment and specification, in the premise for not departing from spirit and scope of the invention
Under, various changes and improvements may be made to the invention, and these changes and improvements all fall within the protetion scope of the claimed invention.This hair
Bright claimed range is defined by the appending claims and its equivalent thereof.
Claims (2)
1. a kind of straight line vascular cold finger integrates the anti-cold-shrinkage device coupled, including Dewar ice chest shell (1), cold platform with Dewar
(2), cold chain (3), air reservoir (4), inertia tube (5), pulse tube hot end heat exchanger (6), pulse tube hot end flexible flange (7), pulse
Manage (8), cold head (vascular cold end) (8-1), vascular regenerator (9), regenerator hot end flange (10), regenerator hot end (11), pressure
Contracting machine (12)；It is characterized by:
The pulse tube hot end heat exchanger (6) successively with pulse tube (8), cold head (vascular cold end) (8-1), vascular regenerator (9),
Regenerator hot end flange (10), regenerator hot end (11) are connected by welding manner, the regenerator hot end flange of straight line vascular
(11) it is welded with the side of Dewar ice chest shell (1), the pulse tube flexible flange (7) and Dewar ice chest shell (1) of straight line vascular
The other side welding；The cold head (8-1) of straight line vascular cold finger (8) by flexible cooling chain (3) with it is cold in Dewar ice chest shell (1)
Platform flexible connection；The regenerator hot end flange (11) and Dewar ice chest shell (1) of straight line vascular are rigid connection.
2. a kind of straight line vascular cold finger according to claim 1 exists with the integrated anti-cold-shrinkage device coupled of Dewar, feature
In: pulse tube hot end flange (7) is flexible flange, and material is stainless steel, and there are wave structures at circumference of flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811387876.0A CN109386981B (en) | 2018-11-21 | 2018-11-21 | Cold shrink resistant device for integrated coupling of straight line vascular cold finger and Dewar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811387876.0A CN109386981B (en) | 2018-11-21 | 2018-11-21 | Cold shrink resistant device for integrated coupling of straight line vascular cold finger and Dewar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109386981A true CN109386981A (en) | 2019-02-26 |
| CN109386981B CN109386981B (en) | 2023-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811387876.0A Active CN109386981B (en) | 2018-11-21 | 2018-11-21 | Cold shrink resistant device for integrated coupling of straight line vascular cold finger and Dewar |
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| CN (1) | CN109386981B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109945542A (en) * | 2019-03-29 | 2019-06-28 | 中国科学院上海技术物理研究所 | A kind of resistance to stress linear type vascular refrigerator and Dewar coupled structure |
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| JPH06281497A (en) * | 1993-01-29 | 1994-10-07 | Mitsubishi Electric Corp | Infrared ray detector |
| CN1467461A (en) * | 2002-07-09 | 2004-01-14 | 中国科学院理化技术研究所 | Nonmagnetic low-vibration coaxial impulse pipe refrigerating machine |
| CN103344061A (en) * | 2013-06-21 | 2013-10-09 | 中国科学院上海技术物理研究所 | Coupling structure between linear type pulse tube refrigerator and infrared device and manufacturing method for same |
| CN203771765U (en) * | 2014-01-17 | 2014-08-13 | 中国科学院上海技术物理研究所 | Compact coupled inertia tube type high-frequency coaxial pulse tube refrigerating machine |
| CN104535344A (en) * | 2014-12-09 | 2015-04-22 | 中国科学院上海技术物理研究所 | Standard Duvel for measuring refrigeration performance of linear type pulse tube refrigerating machines and manufacturing method |
| CN107270571A (en) * | 2017-06-21 | 2017-10-20 | 浙江大学 | A kind of acoustic pressure amplifying device and refrigeration machine loaded based on RC |
| CN108317764A (en) * | 2017-12-29 | 2018-07-24 | 浙江大学 | A kind of vascular refrigerator equipped with adjustable bellows formula inertia tube |
| CN209445626U (en) * | 2018-11-21 | 2019-09-27 | 中国科学院上海技术物理研究所 | Straight line vascular cold finger integrates the anti-cold-shrinkage device coupled with Dewar |
-
2018
- 2018-11-21 CN CN201811387876.0A patent/CN109386981B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06281497A (en) * | 1993-01-29 | 1994-10-07 | Mitsubishi Electric Corp | Infrared ray detector |
| CN1467461A (en) * | 2002-07-09 | 2004-01-14 | 中国科学院理化技术研究所 | Nonmagnetic low-vibration coaxial impulse pipe refrigerating machine |
| CN103344061A (en) * | 2013-06-21 | 2013-10-09 | 中国科学院上海技术物理研究所 | Coupling structure between linear type pulse tube refrigerator and infrared device and manufacturing method for same |
| CN203771765U (en) * | 2014-01-17 | 2014-08-13 | 中国科学院上海技术物理研究所 | Compact coupled inertia tube type high-frequency coaxial pulse tube refrigerating machine |
| CN104535344A (en) * | 2014-12-09 | 2015-04-22 | 中国科学院上海技术物理研究所 | Standard Duvel for measuring refrigeration performance of linear type pulse tube refrigerating machines and manufacturing method |
| CN107270571A (en) * | 2017-06-21 | 2017-10-20 | 浙江大学 | A kind of acoustic pressure amplifying device and refrigeration machine loaded based on RC |
| CN108317764A (en) * | 2017-12-29 | 2018-07-24 | 浙江大学 | A kind of vascular refrigerator equipped with adjustable bellows formula inertia tube |
| CN209445626U (en) * | 2018-11-21 | 2019-09-27 | 中国科学院上海技术物理研究所 | Straight line vascular cold finger integrates the anti-cold-shrinkage device coupled with Dewar |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109945542A (en) * | 2019-03-29 | 2019-06-28 | 中国科学院上海技术物理研究所 | A kind of resistance to stress linear type vascular refrigerator and Dewar coupled structure |
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| CN109386981B (en) | 2023-07-04 |
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