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Cleaning technology for stainless steel packing of cold accumulator

A technology of stainless steel and cold storage, which is applied to chemical instruments and methods, cleaning methods and utensils, and cleaning methods using liquids, etc. It can solve the problem of difficult removal of tiny attached particles on micropores and the inability to meet the requirements of high reliability and high stability of refrigerators Insufficient and incomplete cleaning process, etc., to achieve the effect of simple and practical inspection method, guaranteed cleanliness inspection, and convenient preparation method

Inactive Publication Date: 2011-04-20
NO 510 INST THE FIFTH RES INST OFCHINA AEROSPAE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The conventional cleaning method, the cleaning process is not complete, the cleaning method is simple, it is difficult to remove the tiny attached particles on the micropores, and there is a lack of suitable inspection methods, it is not suitable for the quantitative cleaning of the stainless steel packing of the Stirling refrigerator, and cannot meet the requirements. Requirements for high reliability and high stability of refrigerators

Method used

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  • Cleaning technology for stainless steel packing of cold accumulator
  • Cleaning technology for stainless steel packing of cold accumulator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Clean the stainless steel packing of the regenerator of the refrigerator with a diameter of Φ6.1mm and a mesh number of 400, and the cleaning quantity is 1000 pieces.

[0023] (1) Alkaline cleaning solution is configured, and the stainless steel filler of the cold storage is alkaline cleaned. The ratio of alkaline solution formula enzyme-free detergent powder to deionized water is 4%:96% (mass percentage), the cleaning temperature is 75°C, and the cleaning time is 30min;

[0024] (2) pH test paper detects that the pH value of the alkaline solution is 10, rinses the solution with deionized water to neutrality, and the pH test paper detects that the pH value is 7;

[0025] (3) Configure an acidic cleaning solution, and carry out acidic cleaning of the stainless steel packing of the regenerator. The ratio of nitric acid to deionized water in the acidic solution formula is 40%: 60% (mass percentage), the cleaning temperature is 23 ° C, and the cleaning time is 60 minutes; ...

Embodiment 2

[0032] Clean the stainless steel packing of the regenerator of the refrigerator with a diameter of Φ7.6mm and a packing mesh number of 363, and the cleaning quantity is 500 pieces.

[0033] (1) Alkaline cleaning solution is configured, and the stainless steel filler of the cold storage is alkaline cleaned. The ratio of alkaline solution formula enzyme-free detergent powder to deionized water is 4%:96% (mass percentage), the cleaning temperature is 75°C, and the cleaning time is 30min;

[0034] (2) pH test paper detects that the pH value of the alkaline solution is 11, rinses the solution with deionized water to neutrality, and the pH test paper detects that the pH value is 7;

[0035] (3) Configure an acidic cleaning solution, and carry out acidic cleaning of the stainless steel packing of the regenerator. The ratio of nitric acid to deionized water in the acidic solution formula is 40%: 60% (mass percentage), the cleaning temperature is 25 ° C, and the cleaning time is 60 min...

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Abstract

The invention provides a method for cleaning stainless steel helices of a regenerator of a refrigerating apparatus, in particular a method for cleaning the stainless steel helices of a regenerator of a Stirling refrigerating apparatus. The method is also used for cleaning a microscreen and a micro-mesh sheet made of stainless steel, and belongs to the field of cleaning apparatus. The method comprises: deoiling, dewatering and performing surface passivation to stainless steel helices after cleaning the stainless steel helices of the refrigerating apparatus according to certain cleaning flow; meanwhile, reducing the tiny impurities in the millipores of the helices to guarantee high cleaning degree of the helices and meet the use requirement of the refrigerating apparatus. The method greatly reduces the adhered impurities in the millipores of the stainless steel helices of the regenerator, effectively improves the cleaning degree of the helices, guarantees high reliability of the operation of the refrigerating apparatus, has simple cleaning method and low cost, and does not relate to special cleaning raw materials.

Description

technical field [0001] The invention relates to a method for cleaning stainless steel fillers, in particular to a method for cleaning stainless steel fillers of cold accumulators of refrigerators, and belongs to the field of equipment cleaning. Background technique [0002] The space Stirling refrigerator requires good working stability, high reliability and long working life. The core component cold storage requires stable thermal performance and will not pollute or block the working gas. To achieve this goal, the key is to ensure the high cleanliness and stable thermal performance of the stainless steel filler, especially the absence of attached particles in the micropores of the filler. The conventional cleaning method, the cleaning process is not complete, the cleaning method is simple, it is difficult to remove the tiny attached particles on the micropores, and there is a lack of suitable inspection methods, it is not suitable for the quantitative cleaning of the stainl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23G1/19C23G1/08B08B3/12C23G5/024
Inventor 王田刚闫春杰许国太霍英杰
Owner NO 510 INST THE FIFTH RES INST OFCHINA AEROSPAE SCI & TECH