Vacuum arc-extinction porcelain shell component and its making technology

Abstract

The invention relates to a vacuum arc extinguishing chamber ceramic shell component and a process for manufacturing the same, wherein the ceramic shell component comprises a ceramic shell and a shielding barrel; the inner wall of the ceramic shell is provided with a stiffener rib on which the shielding barrel is fixed; the edge of an upper opening of the shielding barrel is tightly pressed on the stiffener rib in a form of flanging structure, and the shape of the outer side surface of the upper opening part of the shielding barrel had better adapt to the stiffener rib. When the invention is manufactured, the shielding barrel is arranged in the ceramic shell, and the height of the edge of the upper opening of the shielding barrel is over the height of the stiffener rib of the ceramic shell; the shielding barrel is moved upward, so that the upper opening part of the shielding barrel correspondingly contact the lower part of the stiffener rib; the upper opening of the shielding barrel is forced to tightly press on the stiffener rib in the form of flanging structure. The ceramic component has the advantages of thoroughly avoiding the problem of the falling off of the shielding barrel, along with simple structure and reliable performance, and thoroughly avoids the problem of the dropout of the shielding barrel, and simple manufacturing process, convenient operation, low production cost, high production efficiency and production qualification rate and no environmental pollution due to the adoption of a tightly clamping and pressing structure instead of a welding structure.

Description

technical field [0001] The invention relates to a porcelain shell component of a vacuum interrupter and a manufacturing process thereof, belonging to the technical field of vacuum interrupters, and the vacuum interrupter is used for making vacuum switches. Background technique [0002] In the power transmission and distribution industry of the basic energy industry, more than 95% of the vacuum switchgear is currently used. The main part of the vacuum switch—the vacuum interrupter has a complicated manufacturing process, especially the inside of the interrupter, which has contacts, conductive rods and porcelain shells. Assemblies, the porcelain shell assembly has a porcelain shell and a shielding tube, the inner wall of the porcelain shell is provided with fixing ribs, and the shielding tube is fixed on the fixing ribs of the porcelain shell. The main function of the shielding cylinder is that when the contacts are disconnected to generate an arc, a large amount of metal vapo...

AI Technical Summary

Problems solved by technology

If the welding is not firm, it is easy to cause the shielding tube to fall off, and the falling off of the shielding tube can lead to the scrapping of the entire product, and even cause a large-scale power outage in the operating grid

[0003] Welding operation, many procedures, time-consuming, labor-intensive, waste of raw materials, but also cause environmental pollution

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