Arc extinguish chamber and switching device

By introducing an arc-initiating element and improving the exhaust structure in the arc-extinguishing chamber, the problems of low utilization rate of the second-layer arc-extinguishing grid and poor exhaust were solved, achieving a more efficient arc-extinguishing effect and safety.

CN121964443APending Publication Date: 2026-05-01SHANGHAI ELECTRICAL APPLIANCES RES INSTGROUP
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Patent Information

Application Number
CN202610261265.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-04
Publication Date
2026-05-01

AI Technical Summary

Technical Problem

In existing arc-extinguishing chambers, the utilization rate of the second layer of arc-extinguishing grid plates is low, resulting in poor overall arc-extinguishing efficiency. Furthermore, the exhaust effect is not ideal after adding the second layer of arc-extinguishing grid plates, which affects the overall arc-extinguishing efficiency.

Method used

An arc-extinguishing chamber was designed, comprising a grid assembly and an arc-initiating assembly. The arc is guided into the arc-extinguishing chamber by the arc-initiating part, and an entry space for the arc is provided by the transition connection part, thereby improving the exhaust direction and enhancing the arc-extinguishing efficiency.

Benefits of technology

It improves the overall arc extinguishing efficiency and safety of the arc extinguishing chamber, ensures effective gas discharge, avoids re-ignition caused by gas accumulation, and enhances the reliability of switchgear.

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Abstract

The invention discloses an arc extinguish chamber and a switching device, the arc extinguish chamber comprises a grid plate assembly, the grid plate assembly comprises a first grid plate group and a second grid plate group which are arranged at an interval along a first direction, and the middle part of the first grid plate group is discontinuously arranged and forms an arc channel communicated with the second grid plate group; the second grid plate group comprises an arc striking part arranged opposite to the arc channel in the second direction and arc extinguishing parts arranged on the two sides of the arc striking part, and the arc striking part faces the arc channel and protrudes out of the arc extinguishing parts; and the arc striking assembly extends from the two sides, in the second direction, of the arc channel to the two sides, in the second direction, of the second grid piece set, the arc striking assembly is provided with a transition connecting part which is arranged between the first grid piece set and the second grid piece set and used for isolation, and the transition connecting part, the first grid piece set and the second grid piece set are arranged at intervals in the first direction. The arc extinguishing chamber and the switching device aim at improving the overall arc extinguishing efficiency.
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