Arc-extinguishing chamber, arc-extinguishing chamber tank and high-voltage switching equipment applying this arc-extinguishing chamber

Abstract

The invention relates to arc-extinguishing chamber, arc-extinguishing chamber tank and high-voltage switching equipment applying this arc-extinguishing chamber. The arc-extinguishing chamber comprises main part of tank which consists of barrel and end cap mounted on the barrel with axis stretching to both sides; the inner wall of barrel is covered with solid insulation layer and at least one end of the end cap is covered with solid insulation layer on its inner wall, thus a complete blocked layer is jointly formed through interconnection of solid insulation layer on both barrel and end cap. Just as the fixed insulation layer on barrel can act as protection, that on end cap can also be the protection, avoiding the damage from high-temperature airflow and also benefiting to shorten axial dimension of the tank, at the same time, the complete blocked layer jointly formed through interconnection of the solid insulation layer on both barrel and end cap can improve the condition of metallic dust depositing on end cap, thus to achieve better protective effect and ideal insulating property.

Description

technical field [0001] The invention relates to an arc extinguishing chamber, a tank body of the arc extinguishing chamber and a high-voltage switchgear using the arc extinguishing chamber. Background technique [0002] Commonly used insulation methods in switchgear are divided into gas insulation and fixed insulation. The method of gas insulation is to fill the arc extinguishing chamber with sulfur hexafluoride gas, nitrogen, etc., and the method of solid insulation is to set polytetrafluoroethylene in the interrupter. , electric ceramic materials, glass fiber cloth, resin materials, etc., and the gas insulation method is generally used in the ground insulation of metal-enclosed switchgear. Gas insulation also plays the role of arc extinguishing. However, no matter it is sulfur hexafluoride or nitrogen, its insulation strength is lower than that of solid insulation materials, and the insulation performance of the insulation gas itself will change according to the temperatu...

AI Technical Summary

Problems solved by technology

[0008] The object of the present invention is to provide an arc extinguishing chamber, an arc extinguishing chamber tank and a high-voltage switchgear using the arc extinguishing chamber, so as to solve the problem of weak insulation capacity of the end cover in the prior art

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