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Stress-resistant linear pulse tube refrigerator and Dewar coupling structure

A technology of pulse tube refrigerator and coupling structure, which is applied in refrigerators, refrigeration and liquefaction, compressors, etc., can solve the problems of how to ensure mechanical reliability and not involve it, and achieve the effect of ensuring mechanical reliability

Pending Publication Date: 2019-06-28
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 2. How to ensure the mechanical reliability after coupling the cold finger and Dewar;
[0006] The existing solutions for the coupling of linear refrigerators and Dewars do not involve detailed solutions and research to solve the above problems

Method used

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  • Stress-resistant linear pulse tube refrigerator and Dewar coupling structure
  • Stress-resistant linear pulse tube refrigerator and Dewar coupling structure
  • Stress-resistant linear pulse tube refrigerator and Dewar coupling structure

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Experimental program
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Effect test

Embodiment Construction

[0016] Below in conjunction with accompanying drawing and embodiment the specific embodiment of the present invention is described in further detail:

[0017] according to figure 2 The structure shown in the present invention is a linear cold finger and Dewar coupling structure, the coupling structure includes vessel end cooling 1, vessel end flexible part 2, pulse tube 3, Dewar shell 4, cold head 5, Cold accumulator 6, cold finger mechanical protection cover 7, cold accumulator end fixing flange 8, cold accumulator end heat dissipation 9. Among them, the heat dissipation 1 at the vessel end, the flexible part 2 at the vessel end, the pulse tube 3, the cold head 5, the regenerator 6, the fixing flange 8 at the regenerator end, and the heat dissipation 9 at the regenerator end form a linear vessel cold finger. The linear pulse tube cold finger and the Dewar shell 4 are welded and fixed through the fixing flange 8 at the regenerator end and the flexible piece 2 at the pulse tu...

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PUM

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Abstract

The invention discloses a stress-resistant linear pulse tube refrigerator and Dewar coupling structure. The stress-resistant linear pulse tube refrigerator and Dewar coupling structure comprises a pulse tube cooler, a pulse tube flexible piece, a pulse tube, a Dewar shell, a cold head, a refrigerator, a mechanical cold finger protection sleeve, a refrigerator fixing flange and a refrigerator cooler, wherein the pulse tube cooler, the pulse tube flexible piece, the pulse tube, the cold head, the refrigerator, the refrigerator fixing flange and the refrigerator cooler form a linear pulse tube cold finger. The linear pulse tube cold finger is welded and fixed to the Dewar shell through the refrigerator fixing flange and the pulse tube flexible piece. The mechanical cold finger protection sleeve is mounted on the refrigerator fixing flange and is coaxial with the linear cold finger. By adoption of the stress-resistant linear pulse tube refrigerator and Dewar coupling structure, the problemof low-temperature stress generated during integrated packaging of the linear pulse tube refrigerator and Dewar can be solved, and the mechanical reliability of cold finger and Dewar packaging can beguaranteed.

Description

technical field [0001] The invention relates to an integrated coupling of a pulse tube refrigerator and a Dewar, in particular to an integrated coupling structure of a cold finger of a linear pulse tube refrigerator and a Dewar. Background technique [0002] Since the cold finger part of the pulse tube refrigerator has no moving parts, the pulse tube refrigerator has the characteristics of low vibration and high reliability. According to the relative position of the regenerator and the pulse tube, the pulse tube refrigerator can be divided into linear pulse tube refrigerator, U-shaped pulse tube refrigerator and coaxial pulse tube refrigerator according to its structure, such as figure 1 shown. Among them, the air flow efficiency caused by the linear pulse tube refrigerator is the lowest, so the linear structure is the most efficient. [0003] The cold finger of the pulse tube refrigerator needs to be coupled with the Dewar to transfer the cold energy of the cold head to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B9/14
Inventor 吴亦农左志强蒋珍华曲晓萍杨宝玉姜佳维
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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