CN202345923U - Large-sized heat sink structure for environment with low temperature and high vacuum - Google Patents
Large-sized heat sink structure for environment with low temperature and high vacuum Download PDFInfo
- Publication number
- CN202345923U CN202345923U CN2011204168499U CN201120416849U CN202345923U CN 202345923 U CN202345923 U CN 202345923U CN 2011204168499 U CN2011204168499 U CN 2011204168499U CN 201120416849 U CN201120416849 U CN 201120416849U CN 202345923 U CN202345923 U CN 202345923U
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- stainless steel
- heat sink
- copper
- low temperature
- sink structure
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Abstract
The utility model discloses a large-sized heat sink structure for an environment with low temperature and high vacuum. The large-sized heat sink structure is characterized in that the large-sized heat sink structure is provided with stainless steel tubes and copper fins connected with the stainless steel tubes, and the copper fins are welded onto the diameters of the external circles of the stainless steel tubes; in order to shade light and enhance the rigidity of the copper fins, the outer edges of the copper fins are provided with edge folds, and the edge folds are folded towards the stainless steel tubes; and the copper fins are shorter or equal to 1 meter in the length direction and are overlapped with each other, so as to eliminate the internal stress generated due to the inconsistency between the expansion and contraction coefficients of the stainless steel tubes and the copper fins. The large-sized heat sink structure has the advantages of high strength, good rigidity and temperature uniformity under the conditions of low temperature and ultra-high vacuum, the phenomenon of cold leakage in the environment with low temperature and high vacuum is basically eliminated, and the phenomenon of weld seam crack due to the inconsistency between the expansion and contraction coefficients of stainless steel and copper is avoided.
Description
Technical field
The utility model relates to a kind of H Exch, relates in particular to the improvement that space industry low temperature ultrahigh vacuum is tested medium-and-large-sized heat sink manifold configuration.
Background technology
In the space industry ground simulation test,, need set up a vacuum system with vacuum vessel for the cold black vacuum environment of simulation space; The heat sink interchange of heat that is used for is equipped with in the inside; Adopt liquid nitrogen (helium) cooling, thus heat sink material should low temperature under good mechanical property, stiffness and strength is high; Air-tightness is good, and good heat conductivility also will be arranged simultaneously.The heat sink general employing copper pipe of prior art and the welding of copper sheet, though the copper permeability of heat is good, rigidity is poor, is not suitable for doing large-scale heat sink.Though corrosion-resistant steel good rigidity intensity at low temperatures is high, poor thermal conductivity is in order to overcome the relatively poor shortcoming of corrosion-resistant steel permeability of heat, be employed in the form of copper fin of burn-oning on the stainless steel tube, to improve heat sink rigidity and temperature homogeneity.But, cause cold leakage because copper fin at stainless inclined to one side midway location, makes copper ion be penetrated in the corrosion-resistant steel easily during welding.In case cold leakage takes place, prior art can't detect, whole heat sink can only scrapping.
Used heat sink of prior art adopts copper and copper pipe welding, though welding is than being easier to, because of the intensity and the stiffness of copper is not so good as corrosion-resistant steel, so generally can only do smaller heat sink.
Another kind of heat sink, though adopt the welding of corrosion-resistant steel and copper fin, make heat sink intensity height, good rigidly, temperature even, owing to copper fin is welded on stainless inclined to one side midway location, copper ion is penetrated in the corrosion-resistant steel, cause easily and scrap phenomenon.
Summary of the invention
The utility model mainly is to solve the existing in prior technology deficiency, thereby develops intensity height under a kind of low temperature ultrahigh vacuum, good rigidly, the uniform large-scale heat sink structure of temperature.
Soldering copper fin structure on the stainless steel tube, this structure guarantee that copper ion penetrates stainless thickness and is less than 0.5mm in the time of will guaranteeing stainless steel tube and copper fin welding, thereby avoid the generation of cold leakage phenomenon; This structure will guarantee after stainless steel tube feeds liquid nitrogen cooling, will avoid corrosion-resistant steel and copper that the phenomenon of weld cracking takes place because of contraction coefficient is inconsistent simultaneously.
The above-mentioned technical matters of the utility model mainly is able to solve through following technical proposals: large-scale heat sink structure under a kind of low temperature high vacuum; It is characterized in that: have stainless steel tube and be welded on the copper fin on the stainless steel tube two sides; Said two copper fins are arranged on the outer wall of two points of same diameter of stainless steel tube; Two copper fins are parallel to each other, and welding direction is opposite, form zigzag; There is flanging said copper fin outside, and said flanging is folded to the stainless steel tube direction.Can reach the purpose of shading and the rigidity that increases copper fin like this.
The technical scheme of the utility model can also be further perfect:
As preferably, be divided on the length direction of said copper fin and be less than or equal to 1 meter segmentation, overlapped between section and the section.Eliminate corrosion-resistant steel and the internal stress of generation inconsistent with the copper fin coefficient of thermal expansion and contraction.
As preferably, overlapped between the flanging of copper fin.
The utility model beneficial effect is:
1) heat sink arm high good rigidly of intensity, temperature under the low temperature ultrahigh vacuum is even;
2) heat of welding distributes easily, and copper ion is not easy to penetrate in the stainless steel tube, so stopped the cold leakage phenomenon of low temperature high vacuum basically, base is to also success in the extreme in the lower liquid helium of temperature is heat sink;
3) break off between copper fin and the copper fin after, and adopt overlap joint, after stainless steel tube feeds liquid nitrogen cooling, avoid corrosion-resistant steel and copper that the phenomenon of welded seam bursh takes place because of contraction coefficient is inconsistent.
Description of drawings
Accompanying drawing 1 is a kind of structural representation of the utility model;
Accompanying drawing 2 is to break off back overlap joint enlarged drawing between copper fin and the copper fin.
Description of reference numerals: 1, stainless steel tube, 2, copper fin, 3, inside face.
The specific embodiment
Pass through embodiment below, and combine accompanying drawing, do further bright specifically the technical scheme of the utility model.
Embodiment:
Large-scale heat sink structure under the low temperature high vacuum as shown in Figure 1; Have stainless steel tube 1 and be welded on the copper fin 2 on the stainless steel tube two sides, said two copper fins are welded on two points of the same diameter outer wall of stainless steel tube, and two copper fin welding directions are opposite; And be parallel to each other, form zigzag; There is flanging said copper fin outside, and said flanging is folded to the stainless steel tube direction; Overlapped between the flanging of copper fin.Can reach the purpose of shading and the rigidity that increases copper fin like this.
Be divided on the length direction of said copper fin and be less than or equal to 1 meter segmentation; Overlapped between section and the section (adopt joint form, see Fig. 2) is after stainless steel tube feeds liquid nitrogen cooling; The internal stress of avoiding corrosion-resistant steel and copper to produce because of contraction coefficient is inconsistent, the phenomenon of generation welded seam bursh.
When copper fin and stainless steel tube welding; Because variation has taken place in the position of weld, and the heat of welding is distributed easily, copper ion is not easy to penetrate in the stainless steel tube; So stopped the cold leakage phenomenon of low temperature high vacuum basically, base is to also success in the extreme in temperature liquid helium more is heat sink.
Claims (3)
1. large-scale heat sink structure under the low temperature high vacuum; It is characterized in that: have stainless steel tube and be welded on the copper fin on the stainless steel tube two sides; Said two copper fins are welded on two points of the same diameter outer wall of stainless steel tube, and two copper fin welding directions are opposite, and are parallel to each other; Outside the said copper fin
There is flanging on the limit, and said flanging is folded to the stainless steel tube direction.
2. large-scale heat sink structure under the low temperature high vacuum according to claim 1 is characterized in that: is divided on the length direction of said copper fin and is less than or equal to 1 meter segmentation, and overlapped between section and the section.
3. large-scale heat sink structure under the low temperature high vacuum according to claim 1 and 2 is characterized in that: overlapped between the flanging of copper fin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204168499U CN202345923U (en) | 2011-10-28 | 2011-10-28 | Large-sized heat sink structure for environment with low temperature and high vacuum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204168499U CN202345923U (en) | 2011-10-28 | 2011-10-28 | Large-sized heat sink structure for environment with low temperature and high vacuum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202345923U true CN202345923U (en) | 2012-07-25 |
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ID=46534944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204168499U Expired - Fee Related CN202345923U (en) | 2011-10-28 | 2011-10-28 | Large-sized heat sink structure for environment with low temperature and high vacuum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202345923U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102431661A (en) * | 2011-10-28 | 2012-05-02 | 杭州杭氧环保成套设备有限公司 | Large-scale heat sink structure in low-temperature high-vacuum environment |
| CN108216697A (en) * | 2018-01-12 | 2018-06-29 | 北京航空航天大学 | Cylindrical shape splashproof is shot at the target |
| CN110887394A (en) * | 2019-10-16 | 2020-03-17 | 张少学 | Sensitive type wing-shaped fin efficient heat exchanger |
-
2011
- 2011-10-28 CN CN2011204168499U patent/CN202345923U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102431661A (en) * | 2011-10-28 | 2012-05-02 | 杭州杭氧环保成套设备有限公司 | Large-scale heat sink structure in low-temperature high-vacuum environment |
| CN108216697A (en) * | 2018-01-12 | 2018-06-29 | 北京航空航天大学 | Cylindrical shape splashproof is shot at the target |
| CN110887394A (en) * | 2019-10-16 | 2020-03-17 | 张少学 | Sensitive type wing-shaped fin efficient heat exchanger |
| CN110887394B (en) * | 2019-10-16 | 2021-01-15 | 广东艾欣能能源科技有限责任公司 | Sensitive type wing-shaped fin efficient heat exchanger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120725 Termination date: 20151028 |
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| EXPY | Termination of patent right or utility model |