Multi-stage liquid recoil arc extinguishing device

Abstract

The invention discloses a multi-stage liquid recoil arc extinguishing device, which belongs to the technical field of lightning protection and arc extinguishing, and comprises an inclined recoil device and a vertical sealing arc extinguishing device, and the inclined recoil device and the vertical sealing arc extinguishing device are not parallel and not perpendicular to each other. Inclined recoil pipe insulating liquid and insulating oil are arranged in the inclined recoil device and the vertical sealing arc extinguishing device respectively, the vertical sealing arc extinguishing device is filled with the insulating oil, and the inclined recoil device is arranged upwards in an inclined mode. Lightning current is discharged into the ground through an arc extinguishing channel formed by the plurality of ceramic tubes. The air gaps between the ceramic tubes prolong the grounding time of lightning current, so that the residence time of electric arc in the recoil tube is prolonged, the damage of instantaneous large current to electronic equipment and buildings is reduced, a plurality of electric arc fracture points are added, multi-point synchronous electric arc cut-off is carried out on penetrative flashover, a long arc is divided into short arcs, and the short arc units are extinguished step by step, so that the arc extinguishing capability of the long arc is improved, and the reignition of the arc is effectively inhibited.

Description

Technical field [0001] The present invention relates to the field of lightning protection arc, and more particularly to multi-stage liquid anti-rush arc devices. Background technique [0002] Parallel gaps have been widely applied to each voltage level line due to its simple structure, convenient installation and low price. Japan, Germany, France, etc. from the 1960s, research on the overhead power line on the overhead transmission line. China has also developed a parallel gap lightning protection device for different voltage grades. However, due to the simplicity of the parallel gap device, the lightning stripping rate is increased, while making the circuit breaker shorten the life due to frequent load cutting of short-circuit arc; the parallel gap must be used in conjunction with the automatic coincide to use its protection. In addition, long-term power frequency arc burning causes insulators damage and wire disconnection and other accidents, so it is necessary to develop paral...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a multi-stage liquid recoil arc extinguishing device to solve the problem that the existing parallel gap has weak self-extinguishing ability, lacks rapid arc extinguishing ability, and is prone to flashover of line insulators, resulting in large power frequency freewheeling and damaging insulators Technical problems of strings and fittings

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