CN109654787B - Axial flexible low-temperature heat conduction radial heat insulation device - Google Patents
Axial flexible low-temperature heat conduction radial heat insulation device Download PDFInfo
- Publication number
- CN109654787B CN109654787B CN201910056828.1A CN201910056828A CN109654787B CN 109654787 B CN109654787 B CN 109654787B CN 201910056828 A CN201910056828 A CN 201910056828A CN 109654787 B CN109654787 B CN 109654787B
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- heat
- heat conduction
- radial
- cold
- low
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- 238000009413 insulation Methods 0.000 title claims abstract description 32
- 239000004020 conductor Substances 0.000 claims abstract description 28
- 238000007789 sealing Methods 0.000 claims abstract description 24
- 230000003287 optical effect Effects 0.000 claims abstract description 11
- 239000011810 insulating material Substances 0.000 claims abstract description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 26
- 239000007788 liquid Substances 0.000 claims description 13
- 229910052757 nitrogen Inorganic materials 0.000 claims description 13
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 239000003822 epoxy resin Substances 0.000 claims description 5
- 229920000647 polyepoxide Polymers 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 description 10
- 238000001816 cooling Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000012774 insulation material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
- F25D3/10—Devices using other cold materials; Devices using cold-storage bodies using liquefied gases, e.g. liquid air
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention discloses an axial flexible low-temperature heat conduction radial heat insulation device which comprises a sealing body, a heat insulation cold chain connecting structure and a low-temperature system. The radial heat insulation structure and the axial flexible low-temperature heat conduction structure are arranged in the sealing body, and the sealing body and the axial flexible low-temperature heat conduction structure are respectively connected with a cold source device of the low-temperature system. The axial flexible low-temperature heat conduction structure comprises a cold finger to be cooled, a heat conductor and a heat conduction cold finger which are connected in sequence; the heat-conducting cold finger is connected with a cold source device. The radial heat insulation structure comprises a first shaft collar, a flexible spring and a second shaft collar which are sequentially connected; the first collar is connected with the heat conductor, and the second collar is connected with the sealing body. The two ends of the flexible spring are connected with optical axes, the side surfaces of the optical axes are circumferentially provided with annular grooves, and the annular grooves are filled with heat insulating material layers. The invention has small heat loss and flexible connection, and not only meets the requirement of low-temperature heat transfer, but also meets the aim of position and posture adjustment.
Description
Technical Field
The invention relates to a low-temperature heat transfer device, in particular to an axial flexible low-temperature heat conduction radial heat insulation device.
Background
Generally, the mechanical structure is required to have excellent axial heat conduction effect in the low-temperature heat transfer field, and radial heat insulation effect is also required to be excellent, so that the temperature can be very smoothly conducted along the axial mechanical structure in the low-temperature heat transfer process, the axial loss can be controlled, the conduction loss of the radial mechanical structure in the low-temperature heat transfer process is as small as possible, the radial heat conduction has the heat insulation effect, the axial heat transfer efficiency is improved, the radial heat insulation loss is controlled, and the low-temperature heat transfer effect requirement is met.
However, the traditional low-temperature heat transfer mechanism parts are connected in a rigid mode, so that the axial heat conduction efficiency is low, and the radial heat transfer loss is large. In the occasion that axial and radial displacement does not exist, the axial and radial displacement adjustment of the heat transfer mechanism is not applicable, and the use requirement of the low-temperature heat transfer mechanism is not met.
Disclosure of Invention
The invention solves the problem of providing an axial flexible low-temperature heat conduction radial heat insulation device, which optimally carries out axial transmission on heat transfer energy of a low-temperature system through reasonable planning and utilization, carries out heat insulation and isolation on radial heat transfer energy, reduces heat leakage loss, has axial and radial flexible rigidity, has certain elastic deformation, can meet the occasion that the mechanism needs axial and radial position adjustment, is different from the rigid connection of the traditional low-temperature heat transfer mechanism, has no adjustment displacement space, and cannot meet the requirement that the mechanism needs multi-angle adjustment.
The utility model provides an axial flexibility low temperature heat conduction radial adiabatic device, includes a seal body, adiabatic cold chain connection structure and low temperature system, and adiabatic cold chain connection structure includes radial adiabatic structure and the axial flexibility low temperature heat conduction structure that connects gradually. The radial heat insulation structure and the axial flexible low-temperature heat conduction structure are arranged in the sealing body, and the sealing body and the axial flexible low-temperature heat conduction structure are respectively connected with a cold source device of the low-temperature system.
Preferably, the axial flexible low-temperature heat conduction structure comprises a cold finger to be cooled, a heat conductor and a heat conduction cold finger which are connected in sequence; the heat-conducting cold finger is connected with a cold source device.
Preferably, the radial insulation structure comprises a first collar, a flexible spring and a second collar connected in sequence; the first collar is connected with the heat conductor, and the second collar is connected with the sealing body.
Preferably, the two ends of the flexible spring are connected with optical axes, the side surfaces of the optical axes are circumferentially provided with annular grooves, and the annular grooves are filled with heat insulating material layers.
Preferably, the heat-conducting cold finger is in contact connection with the end face of the heat conductor.
Preferably, an inner hole is formed in the end face, in contact with the cold finger to be cooled, of the heat conductor, the cold finger to be cooled is inserted into the inner hole of the heat conductor through clearance fit, and epoxy resin adhesive is used for fixation.
Preferably, the sealing body comprises a shell and a shell seat, wherein the shell is arranged in the shell seat, and the shell seat is connected with the cold source device.
Preferably, the housing seat is a vacuum sealing cylinder; the shell seat is welded with the cold source device; the shell is fixedly connected to the inner side wall of the shell seat.
Preferably, the housing is connected to the second collar; the heat conduction cold finger is welded with the cold source device.
Preferably, the cold source device is a liquid nitrogen tank.
Compared with the prior art, the invention has the beneficial effects that: the low-temperature heat in the liquid nitrogen tank is efficiently transferred to the cold finger to be cooled through axial conduction, so that the working temperature area requirement of the cold finger to be cooled is met. And through radial flexible spring adiabatic mechanism, reduce the heat leakage that loses through radial heat conduction in the liquid nitrogen container axial heat transfer process to the system operation requirement for the low temperature cold volume that the liquid nitrogen container provided satisfies waiting to cool cold finger operating temperature requirement.
In particular, the problem that the rigid connection of the traditional low-temperature heat transfer mechanism has no axial and radial position and posture adjustment is solved, and the purposes of meeting the low-temperature heat transfer requirement and meeting the position and posture adjustment are achieved.
Drawings
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a schematic view of an axially flexible low temperature thermally conductive radial thermally insulating coupling.
Fig. 3 is a schematic structural view of a flexible spring.
Reference numerals: the cooling finger cooling device comprises a cooling finger 1 to be cooled, a first shaft collar 2, a shell seat 3, a heat conduction cooling finger 4, a liquid nitrogen tank 5, a shell 6, a second shaft collar 7, a flexible spring 8, a heat conductor 9, a ring groove 10, an optical axis 11 and an inner hole 12.
Detailed Description
The invention will be further described with reference to specific examples and figures.
The invention aims to solve the problems of low axial heat conduction efficiency and large radial heat conduction loss in the low-temperature heat transfer process. In particular to solve the problem that the rigid connection of the traditional low-temperature heat transfer mechanism has no axial and radial position and posture adjustment, and achieve the purposes of meeting the requirement of low-temperature heat transfer and meeting the position and posture adjustment.
As shown in fig. 1 to 3, an axial flexible low-temperature heat conduction radial heat insulation device comprises a sealing body, a heat insulation cold chain connecting structure and a low-temperature system, wherein the heat insulation cold chain connecting structure comprises an axial flexible low-temperature heat conduction structure and at least two groups of radial heat insulation structures which are connected with the axial flexible low-temperature heat conduction structure at equal intervals in a circumferential direction. The radial heat insulation structure and the axial flexible low-temperature heat conduction structure are both arranged in the sealing body, and the sealing body and the axial flexible low-temperature heat conduction structure are respectively connected with a cold source device of a low-temperature system, and the cold source device is a liquid nitrogen tank 5.
The axial flexible low-temperature heat conduction structure comprises a cold finger 1 to be cooled, a heat conductor 9 and a heat conduction cold finger 4 which are connected in sequence. One end of the heat conduction cold finger 4 is welded on the liquid nitrogen tank 5, and the other end is in contact connection with the end face of the heat conductor 9. An inner hole 12 is arranged on the end face of the heat conductor 9, which is contacted with the cold finger 1 to be cooled, and the cold finger 1 to be cooled is inserted into the inner hole 12 of the heat conductor 9 through clearance fit and is adhered and fixed by adopting epoxy resin adhesive.
The radial insulation structure comprises a first collar 2, a flexible spring 8 and a second collar 7 connected in sequence. The first collar 2 is connected with the heat conductor 9, and the second collar 7 is connected with the sealing body, and can be connected by bonding and the like. The two ends of the flexible spring 8 are welded with an optical axis 11, at least one annular groove 10 is circumferentially arranged on the side face of the optical axis 11, and a heat insulating material layer is filled in the annular groove 10. The flexible spring 8 is connected to the first collar 2 and the second collar 7, respectively, by means of an optical axis 11.
The sealing body comprises a shell 6 and a shell seat 3, wherein the shell 6 is arranged in the shell seat 3, and the outer side wall of the shell 6 is fixedly adhered to the inner side wall of the shell seat 3 through epoxy resin adhesive. The shell seat 3 is a vacuum sealing cylinder, and one end of the shell seat 3 is welded on the liquid nitrogen tank 5 in a sealing way. The inner side wall of the shell 6 is connected with a second collar 7.
The heat-conducting cold finger 4 is welded with the liquid nitrogen tank 5, liquid nitrogen is filled in the liquid nitrogen tank 5, and a temperature source, such as 77K, of the heat-conducting cold finger 4 is provided. The heat conduction cold finger 4 is in contact with the axial end face of the heat conductor 9, so that not only can the cold quantity be transferred, but also the flexible displacement requirement of the heat conductor 9 is met. The heat conduction cold finger 4 transmits the obtained 77K low-temperature cold energy to the cold finger 1 to be cooled through the heat conductor 9, provides the cold energy required by cooling, and maintains the temperature requirement required by the work of the cold finger 1 to be cooled. The heat conductor 9 is connected with a radial insulating structure for flexible fixation and insulation. The flexible spring 8 is arranged in the middle of the radial heat insulation structure, radial stretching force is provided by the flexible spring 8, the heat conductors 9 are kept to be arranged in the series, and heat insulation materials are filled on the optical axes 11 at the two ends of the flexible spring 8, so that heat conduction resistance of the matching surfaces of the first shaft collar 2 and the second shaft collar 7 is increased, and heat transfer efficiency is reduced.
The shell seat 3 is used as a vacuum sealing cylinder and is welded with the liquid nitrogen tank 5, and the shell 6 is adhered to the surface of an inner hole of the shell seat through epoxy resin glue and fixedly connected. I.e. by sealing the housing seat 3, a chamber is formed, and the interior of the housing seat 3 is evacuated by an external vacuum unit, so that the chamber obtains 1 x 10 -2 The vacuum degree of Pa meets the working requirement of internal devices.
The heat conductor 9 receives the cold energy transmitted by the heat conduction cold finger 4, and on one hand, the cold energy is axially transmitted to the cold finger 1 to be cooled, so that the working temperature requirement of the cold finger 1 to be cooled is met; on the other hand, the heat conduction cold finger 4 receives cold energy, and radial flexible springs 8 can form radial heat transfer paths, in order to reduce radial heat transfer loss, the flexible springs 8 are respectively connected with the first collar 2 and the second collar 7 in an adhesive mode, radial annular grooves 10 are formed in two ends of each flexible spring 8, heat insulation materials are filled, heat transfer resistance is increased, the cold energy due to radial heat transfer loss is reduced, namely, the radial heat transfer paths are blocked, the radial heat transfer efficiency is reduced, and the loss caused by radial heat transfer meets the requirement of a use environment.
The spatial position and the posture of the heat conductor 9 and the shell 6 are basically determined through the uniformly distributed stretching connection of the flexible springs 8, the flexible springs 8 have certain elasticity in the axial direction, and the heat conductor 9 has certain adjustment displacement along with the axial stress, so that the occasion of axial displacement adjustment is satisfied; meanwhile, the radial displacement of the heat conductor can be changed by changing the rigidity of the flexible spring 8, so that the occasion that the radial displacement needs to be adjusted is satisfied; namely, through the arrangement of the flexible springs 8, the heat conductor 9 is provided with axial and radial displacement gesture adjustment spaces, so that occasions of different gesture displacements are met.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (7)
1. An axial flexible low-temperature heat conduction radial heat insulation device is characterized in that: comprises a sealing body, a radial heat insulation structure, an axial flexible low-temperature heat conduction structure and a cold source device which are connected in sequence;
the sealing body is connected with the cold source device, and the radial heat insulation structure and the axial flexible low-temperature heat conduction structure are arranged in the sealing body;
the axial flexible low-temperature heat conduction structure comprises a cold finger to be cooled, a heat conductor and a heat conduction cold finger which are connected in sequence; the heat conduction cold finger is connected with a cold source device;
the radial heat insulation structure comprises a first shaft collar, a flexible spring and a second shaft collar which are sequentially connected; the first collar is connected with the heat conductor, and the second collar is connected with the sealing body;
the heat conduction cold finger is in contact connection with the end face of the heat conductor.
2. The axially flexible low temperature thermally conductive radial thermal insulation device of claim 1, wherein: the two ends of the flexible spring are connected with optical axes, the side surfaces of the optical axes are circumferentially provided with annular grooves, and the annular grooves are filled with heat insulating material layers.
3. The axially flexible low temperature thermally conductive radial thermal insulation device of claim 1, wherein: an inner hole is formed in the end face, in contact with the cold finger to be cooled, of the heat conductor, the cold finger to be cooled is inserted into the inner hole of the heat conductor through clearance fit, and epoxy resin adhesive is used for adhesion and fixation.
4. The axially flexible low temperature thermally conductive radial thermal insulation device of claim 1, wherein: the sealing body comprises a shell and a shell seat, wherein the shell is arranged in the shell seat, and the shell seat is connected with the cold source device.
5. The axially flexible low temperature thermally conductive radial thermal insulation apparatus of claim 4, wherein: the shell seat is a vacuum sealing cylinder; the shell seat is welded with the cold source device; the shell is fixedly connected to the inner side wall of the shell seat.
6. The axially flexible cryogenic thermally conductive radial thermal insulation device of claim 1 or 4, wherein: the shell is connected with the second collar; the heat conduction cold finger is welded with the cold source device.
7. The axially flexible low temperature thermally conductive radial thermal insulation device of claim 1, wherein:
the cold source device is a liquid nitrogen tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910056828.1A CN109654787B (en) | 2019-01-22 | 2019-01-22 | Axial flexible low-temperature heat conduction radial heat insulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910056828.1A CN109654787B (en) | 2019-01-22 | 2019-01-22 | Axial flexible low-temperature heat conduction radial heat insulation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109654787A CN109654787A (en) | 2019-04-19 |
| CN109654787B true CN109654787B (en) | 2024-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910056828.1A Active CN109654787B (en) | 2019-01-22 | 2019-01-22 | Axial flexible low-temperature heat conduction radial heat insulation device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113915419B (en) * | 2021-10-27 | 2023-06-02 | 广州文冲船厂有限责任公司 | Low-temperature fluid conveying device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1487281A (en) * | 2003-05-26 | 2004-04-07 | 中国科学院上海技术物理研究所 | Vacuum cooling case |
| CN2718568Y (en) * | 2004-06-22 | 2005-08-17 | 中国科学院上海技术物理研究所 | Dewar with micro-refrigerator |
| CN101469930A (en) * | 2007-12-28 | 2009-07-01 | 中国航天科技集团公司第五研究院第五一〇研究所 | Composite temperature-variable refrigeration temperature coupling mechanism of liquid nitrogen refrigerating apparatus |
| CN102435321A (en) * | 2011-11-10 | 2012-05-02 | 中国科学院上海技术物理研究所 | High-compatibility multi-functional test Duvel for separate Dewar hot load test |
| CN103245121A (en) * | 2013-04-26 | 2013-08-14 | 中国科学院上海技术物理研究所 | Cold-end flexible cold chain structure of coaxial pulse tube refrigerator and manufacturing method |
| JP2016050714A (en) * | 2014-08-29 | 2016-04-11 | 株式会社東芝 | Vacuum heat insulation module case for refrigerator and refrigerator |
| CN209371602U (en) * | 2019-01-22 | 2019-09-10 | 合肥锐联传热技术有限公司 | A kind of device of the thermally conductive radial adiabatic of axial elasticity low temperature |
-
2019
- 2019-01-22 CN CN201910056828.1A patent/CN109654787B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1487281A (en) * | 2003-05-26 | 2004-04-07 | 中国科学院上海技术物理研究所 | Vacuum cooling case |
| CN2718568Y (en) * | 2004-06-22 | 2005-08-17 | 中国科学院上海技术物理研究所 | Dewar with micro-refrigerator |
| CN101469930A (en) * | 2007-12-28 | 2009-07-01 | 中国航天科技集团公司第五研究院第五一〇研究所 | Composite temperature-variable refrigeration temperature coupling mechanism of liquid nitrogen refrigerating apparatus |
| CN102435321A (en) * | 2011-11-10 | 2012-05-02 | 中国科学院上海技术物理研究所 | High-compatibility multi-functional test Duvel for separate Dewar hot load test |
| CN103245121A (en) * | 2013-04-26 | 2013-08-14 | 中国科学院上海技术物理研究所 | Cold-end flexible cold chain structure of coaxial pulse tube refrigerator and manufacturing method |
| JP2016050714A (en) * | 2014-08-29 | 2016-04-11 | 株式会社東芝 | Vacuum heat insulation module case for refrigerator and refrigerator |
| CN209371602U (en) * | 2019-01-22 | 2019-09-10 | 合肥锐联传热技术有限公司 | A kind of device of the thermally conductive radial adiabatic of axial elasticity low temperature |
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| CN109654787A (en) | 2019-04-19 |
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