Multi-response falling centrifugal ejection arc extinction device

Abstract

The invention discloses a multi-response falling centrifugal ejection arc extinction device which mainly comprises a lightning protector shell, an arc extinction rotating disk, a conducting metal plate, a starting rod, a clamping rod, an induction coil, an arc extinction cylinder and a counting pointer. The arc extinction rotating disk is mounted in the lightning protector shell, a flat spiral spring is arranged at the middle of the arc extinction rotating disk and pushes the arc extinction rotating disk to rotate, the arc extinction rotating disk is provided with a plurality of air pill placing holes along a peripheral direction, a rifling is arranged on the inner side surface of each air pill placing hole, arc extinction air pills are placed in the air pill placing holes, one side of each arc extinction air pill is provided with a triggering electrode and a groove, one end of the triggering electrode is connected with one triggering end of the arc extinction air pills through a lead,the other end of the triggering electrode extends out of the edge of the arc extinction rotating disk, and the other triggering end of the arc extinction air pills is connected with a metal conducting sheet through a lead. The device is simple in structure, reasonable in design, high in arc extinction capability and stable and reliable in working, and the arc extinction air pills are rapidly andconveniently replaced.

Description

technical field [0001] The invention relates to a lightning protection device for a power transmission line, in particular to a multi-response drop type centrifugal projectile arc extinguishing device. Background technique [0002] Lightning is an important factor affecting the safety of transmission lines. It has long occupied the first place in line fault tripping. It is a natural process of atmospheric activity and has not been controlled so far. However, we can analyze the frequent accidents to find the law of lightning strikes and strengthen prevention. For example, towers on high mountains or peaks, transmission lines near ponds or reservoirs, towers crossing mountains or rivers and lakes, and towers installed on high grounding resistance, rocky tower foundations and transmission lines are all vulnerable to lightning damage. focus. [0003] Lightning strikes will bring different forms of damage and damage to power facilities. Thundercloud discharge will cause lightni...

AI Technical Summary

Problems solved by technology

[0009] Although the above patents have played a very good role in lightning protection, there are still some deficiencies, such as only one electrode is equipped with an arc extinguishing device, and when the arc is started on the other electrode, the arc starting point cannot be cut off and extinguished. Arc and discharge counters are large in size, difficult to install in some specific occasions, weak in anti-interference ability, easy to generate wrong counts, data cannot be stored, manual records are required, and a lot of labor is wasted

[0010] In addition, when strong lightning discharges, the arc ablation time is longer, and the dissociation effect on the surrounding air is stronger, which will cause a short-circuit fault that is difficult to cut off in the power system.

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