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Stirling refrigerator regenerator shell structure and bonding method for abrasion-proof layer thereof

A technology of shell structure and bonding method, which is applied in the bonding method of surface pretreatment, refrigerator, refrigeration and liquefaction, etc., can solve the problems of powder falling off, falling off of spray coating, and weak bonding on the surface of regenerator shell, etc. , to achieve the effect of avoiding powder drop

Inactive Publication Date: 2019-08-02
CHINA ELECTRONICS TECH GROUP CORP NO 16 INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The wear-resistant layer on the surface of the hot end and cold end of the existing regenerator shell is prepared by spraying powdered PTFE-based composite materials. Due to the low surface energy of PTFE and poor wettability, the contact between the particles and the surface of the regenerator shell Insufficient bonding leads to powder falling, cracking and falling off of the sprayed coating during operation. The ambient temperature of the coating at the cold end of the regenerator shell changes greatly, and the temperature stress changes greatly. This phenomenon is particularly obvious.

Method used

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  • Stirling refrigerator regenerator shell structure and bonding method for abrasion-proof layer thereof

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with accompanying drawing:

[0025] Such as figure 1 The shown structure of a regenerator shell of a Stirling refrigerator includes a regenerator shell; The hot end 2 of the regenerator shell and the cold end 3 of the regenerator shell at the left and right ends; The outer side of the end 3 is covered with a cold-end wear-resistant layer 5; the hot-end wear-resistant layer 4 and the cold-end wear-resistant layer 5 are both molded by polyimide-based materials.

[0026] Further, the main body 1 of the regenerator shell, the hot end 2 of the regenerator shell and the cold end 3 of the regenerator shell are all ring-shaped, and the inner diameters of the three are equal. The outer diameters of the cold end 3 of the regenerator shell are smaller than the outer diameter of the main body 1 of the regenerator shell.

[0027] Further, the wear-resistant layer 4 at the hot end and the wear-resistant layer 5 a...

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Abstract

The invention relates to a stirling refrigerator regenerator shell structure and a bonding method for an abrasion-proof layer thereof. The regenerator shell structure comprises a regenerator shell, ahot end abrasion-proof layer and a cold end abrasion-proof layer; the regenerator shell comprises a regenerator shell main body, a regenerator shell hot end and a regenerator shell cold end, wherein the regenerator shell hot end and the regenerator shell cold end are arranged at the left end and the right end of the regenerator shell main body correspondingly; the hot end abrasion-proof layer is arranged on the outer side of the regenerator shell hot end in a sleeving mode, and the cold end abrasion-proof layer is arranged on the outer side of the regenerator shell cold end in a sleeving mode;and the hot end abrasion-proof layer and the cold end abrasion-proof layer are both subjected to compression molding through a polyimide base material. Through the stirling refrigerator regenerator shell structure and the bonding method for the abrasion-proof layer thereof, the binding force between the abrasion-proof layer and the surface of the regenerator shell hot end as well as between the abrasion-proof layer and the surface of the regenerator shell cold end can be improved, and in addition, the phenomena that the abrasion-proof layer is subjected to powder falling, cracking, disengaging and the like can be avoided.

Description

technical field [0001] The invention relates to the technical field of Stirling refrigerators, in particular to a shell structure of a regenerator of a Stirling refrigerator and a bonding method for a wear-resistant layer thereof. Background technique [0002] As the key moving part of the Stirling refrigerator, the regenerator is sealed with the cylinder gap of the expander to undertake the task of periodic heat exchange between cold and hot fluids. When the Stirling refrigerator is running, the outer wall of the regenerator and the inner wall of the expander cylinder are always in a state of dry friction, and the friction reduction and wear resistance of the friction pair determine the performance and service life of the refrigerator. [0003] The wear-resistant layer on the surface of the hot end and cold end of the existing regenerator shell is prepared by spraying powdered PTFE-based composite materials. Due to the low surface energy of PTFE and poor wettability, the co...

Claims

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Application Information

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IPC IPC(8): F25B9/14C09J5/02
CPCC09J5/02C09J2479/086F25B9/14
Inventor 王涛
Owner CHINA ELECTRONICS TECH GROUP CORP NO 16 INST
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