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Multi-tube liquid recoil arc extinguishing device

An arc extinguishing device, liquid technology, applied in the direction of corona discharge devices, electrical components, spark gaps, etc., can solve the problems of weak self-extinguishing ability of parallel gap, damage to insulator strings and fittings, lack of rapid arc extinguishing ability, etc., to achieve Improve the arc extinguishing ability, prolong the entry time, and increase the residence time

Inactive Publication Date: 2021-11-02
南宁超伏电气科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a multi-tube 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 defects in strings and fittings

Method used

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  • Multi-tube liquid recoil arc extinguishing device
  • Multi-tube liquid recoil arc extinguishing device
  • Multi-tube liquid recoil arc extinguishing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 As shown, the multi-tube liquid recoil arc extinguishing device includes an inclined recoil device and a vertical recoil device. The inclined recoil device is not parallel to the vertical recoil device and is not vertically arranged. The inclined recoil device and the vertical recoil device An inclined recoil pipe insulating liquid 3 and a vertical pipe insulating liquid 9 are arranged in the device respectively, the inclined recoil device is arranged obliquely upward, and the inclined recoil device and the vertical recoil device are provided with metal electrodes 5 . The inclined recoil device and the vertical recoil device perform secondary arc extinguishing. At the same time, the arc extinguishing directions of the two are different, which can better arc extinguishing. The energy of the arc is large, the recoil force is also large, and the arc is extinguished through the multi-stage recoil capability of the two recoil tubes to gradually attenuate the...

Embodiment 2

[0037] Such as figure 2 As shown, the difference between this embodiment and Embodiment 1 is that the vertical pipe is set as a straight recoil pipe 10, and the side of the straight recoil pipe 10 is provided with a straight recoil pipe nozzle 11, and the electrode at the bottom of the vertical pipe 8 is sealed and fixedly arranged at the bottom of the straight recoil pipe 10, and the height of the insulating liquid 9 in the vertical pipe is lower than that of the spout 11 of the straight recoil pipe.

[0038] The arc extinguishing path of multi-pipe liquid recoil is designed. The ceramic tube 1 with a fork is placed vertically, the inside of the ceramic tube 1 contains a small amount of liquid, and the upper and lower ends of the ceramic tube 1 are sealed with a cylindrical metal plate; the upper port of the ceramic tube 2 is provided with a metal electrode, There is a certain angle between them, and they are connected by metal electrodes; the lower port of the ceramic tube...

Embodiment 3

[0041] Such as image 3 As shown, the difference between this embodiment and Embodiments 1 and 2 is that a sealed tube 12 is arranged between the vertical tube and the metal electrode 5, the metal plate 6 is arranged on the top of the sealed tube 12, and the sealed tube bottom plate 13 is arranged on the sealed tube The bottom of 12 is a metal electrode, the sealing tube 12 is filled with sealing tube insulating oil 14, and the sealing tube bottom plate 13 is arranged on the top of the vertical tube. The improved sealing structure extinguishes the arc through the Pascal effect.

[0042] The Pascal effect is formed. When the arc is formed, due to the closed structure, the arc will squeeze the liquid, causing the liquid to generate outward pressure, and then the force will recoil back due to the side wall, and the force will directly point to the arc in the center. Can quickly extinguish the arc.

[0043] The Pascal effect further enhances the hydroelectric effect: Pascal's pr...

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Abstract

The invention discloses a multi-tube liquid recoil arc extinguishing device, and belongs to the technical field of lightning protection arc extinguishing, the multi-tube liquid recoil arc extinguishing device comprises an inclined recoil device and a vertical recoil device, the inclined recoil device and the vertical recoil device are not parallel and not vertical, and inclined recoil tube insulating liquid and vertical tube insulating liquid are respectively arranged in the inclined recoil device and the vertical recoil device. The inclined recoil device is arranged upwards in an inclined mode, and metal electrodes are arranged on the inclined recoil device and the vertical recoil device. Lightning current passes through a plurality of recoil tubes to form an arc extinguishing channel and is discharged into the ground. The air gaps among the plurality of tubes prolong the grounding time of lightning current, so that the retention time of the arc in the recoil tubes is prolonged, the damage of instantaneous large current to electronic equipment and buildings is reduced, a plurality of arc fracture points are added, multi-point synchronous arc cut-off is implemented for penetrative flashover, A long arc is divided into short arcs, and 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 invention relates to the technical field of lightning protection and arc extinguishing, in particular to a multi-tube liquid recoil arc extinguishing device. Background technique [0002] Due to its simple structure, convenient installation and low price, the parallel gap has been widely used in lines of various voltage levels. Japan, Germany, France, etc. have begun to study the use of parallel gaps on overhead transmission lines since the 1960s. China has also developed parallel gap lightning protection devices with different voltage levels. However, due to the simple structure of the parallel gap device, it will increase the lightning tripping rate, and at the same time shorten the life of the circuit breaker due to frequent load-cut short-circuit arcs; the parallel gap must be used in conjunction with automatic reclosing to play its protective role. In addition, long-time power frequency arc burning will cause accidents such as insulator dama...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01T1/08H01T19/00
CPCH01T1/08H01T19/00
Inventor 王嬿蕾王巨丰陈宇宁卢杨骆耀敬宋永锋李浩何琪文贾征浩
Owner 南宁超伏电气科技有限公司
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