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Packaging process of hollow arc-extinguishing chamber in APG sealed insulator

A vacuum interrupter and insulator technology, which is applied to high-voltage air circuit breakers, electrical components, electric switches, etc., can solve problems such as cracking of solid-sealed insulators, cracking of insulators, unreliability of solid-sealed insulators, etc., and achieve high insulation strength and sealing Good performance and reliable application effect

Inactive Publication Date: 2003-07-30
ZHEJIANG HUAYI ELECTRIC APPLIANCE TECH
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Problems solved by technology

However, the vacuum interrupter shell of this solid-sealed insulator is different from the expansion and contraction rate of organic materials, and the cured insulator will shrink and cause cracking.
[0003] Recently, some units in China have added a rubber sleeve between the vacuum interrupter and the organic material as a coupling layer, but this method has solved the problem of cracking of the solid-sealed insulator, and at the same time brought problems due to the insulation sleeve and the vacuum interrupter. There is a gap between the shells, which causes a serious problem of unreliability of the solid-sealed insulator

Method used

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Embodiment Construction

[0007] Technical process of the present invention is:

[0008] a) Pour the required amount of POWERSIL silicone rubber solvent A and B into the vacuum mixing tank and stir until uniform;

[0009] b) Clean the surface of the vacuum interrupter with alcohol, if there are oxides, remove them with gauze;

[0010] c) Preheat the mold designed according to the gap reserved for the insulation thickness of the vacuum interrupter to 120°C;

[0011] d) above-mentioned mold is installed on the injection machine;

[0012] e) Brush a layer of adhesive on the surface of the vacuum interrupter;

[0013] f) Fix the vacuum interrupter in the above-mentioned mold designed according to the gap reserved for the insulation thickness;

[0014] g) Inject uniformly stirred POWERSIL solvent into the mold and keep it for a period of time to make it bond with the adhesive on the outer surface of the vacuum interrupter to form a sealing layer;

[0015] h) Take out the vacuum interrupter for high temp...

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Abstract

The present invention relates to the packing process of hollow arc-extinguishing chamber in APG sealed insulator. The hollow arc-extinguishing chamber has its casing painted with one layer of adhesive and is then fixed on mold with preserved interval designed based on insulation thickness, POWERSIL solvent homogeneously stirred is injected to the mold and adhered to the adhesive to form packing layer. The present invention has high insulation strength, no crack, high sealing and other features, and is used in production of vacuum breaker.

Description

Technical field [0001] The invention relates to a manufacturing process of a vacuum circuit breaker. Background technique [0002] At present, the world's leading vacuum interrupter solid-sealed insulator manufacturing process uses APG, that is, the vacuum interrupter is fixed in the cavity of the insulator mold, and then injected with liquid organic materials. After curing, it becomes what is commonly called solid. Seal the insulator. However, the expansion and contraction rate of the vacuum interrupter shell of this solid-sealed insulator is different from that of organic materials, and the insulator after curing will shrink and cause cracks. [0003] Recently, some units in China have added a rubber sleeve between the vacuum interrupter and the organic material as a coupling layer, but this method has solved the problem of cracking of the solid-sealed insulator, and at the same time brought problems due to the insulation sleeve and the vacuum interrupter. There is a gap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/664
Inventor 祝存春
Owner ZHEJIANG HUAYI ELECTRIC APPLIANCE TECH
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