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Arc extinguishing lightning arrester

A lightning protection device and arc extinguishing technology, which is applied in the field of lightning protection and lightning protection, can solve the problems of arc burning of metal electrodes in parallel gaps, power frequency freewheeling arcs cannot be effectively extinguished, and parallel gaps do not have arc extinguishing functions, etc., to achieve The effect of enhancing the arc extinguishing effect

Active Publication Date: 2020-12-11
GUANGDONG POWER GRID CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the parallel gap can reduce the lightning trip rate and accident rate, but because the parallel gap does not have the arc extinguishing function, the power frequency freewheeling arc cannot be effectively extinguished when the lightning flashover occurs, resulting in the occurrence of parallel gap metal electrodes in actual operation. Accidents such as serious arc damage and wire breakage

Method used

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  • Arc extinguishing lightning arrester
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  • Arc extinguishing lightning arrester

Examples

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Embodiment 1

[0044] see Figure 1 to Figure 5 , this embodiment provides an arc extinguishing and lightning protection device, including a connecting mechanism 1, an arc extinguishing mechanism 2, an elastic mechanism 3, a first connecting rod 4 and a second connecting rod 5, the connecting mechanism 1 includes a grounding plate 11, a U-shaped connection Rod 12, first splint 13, third insulator 14, fixed seat 15, second splint 16 and wire clip 17, the top of wire clip 17 is fixedly connected to the bottom of fixed seat 15, the middle part of fixed seat 15 is fixedly connected to the middle part of second splint 16, fixed The top of the seat 15 is fixedly connected to the bottom of the third insulator 14, the top of the third insulator 14 is connected to the bottom of the U-shaped connecting rod 12 by bolts, the middle part of the U-shaped connecting rod 12 is fixedly connected to the middle part of the first splint 13, and the top of the U-shaped connecting rod 12 is connected by a U-shaped...

Embodiment 2

[0060] The second embodiment discloses an arc extinguishing and lightning protection device, the structure of which is basically the same as that of the first embodiment. The arc extinguishing and lightning protection device includes a connecting mechanism 1, an arc extinguishing mechanism 2, an elastic mechanism 3, a first connecting rod 4, a second connecting rod 5 and a cable 6. The above-mentioned structural settings, further included specific structures and their connection methods and embodiments One is the same.

[0061] see image 3 , Figure 6 The difference between this embodiment and Embodiment 1 is that there are multiple second insulators 232 in the arc extinguishing mechanism 2 , which are distributed sequentially between the first insulators 221 and the second connection block 24 from top to bottom. At the same time, the vertical length of the second insulator 232 can be increased or decreased, and the corresponding number of third insulators 14 in the connect...

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Abstract

The invention belongs to the field of lightning protection, and discloses an arc extinguishing lightning arrester. The arc extinguishing lightning arrester comprises a connecting mechanism, an arc extinguishing mechanism, an elastic mechanism, a first connecting rod and a second connecting rod, two ends of the first connecting rod are respectively connected with the top of the connecting mechanismand the top of the arc extinguishing mechanism, two ends of the second connecting rod are respectively connected with the bottom of the connecting mechanism and the bottom of the elastic mechanism, and the top of the elastic mechanism is connected with the bottom of the arc extinguishing mechanism. When the insulation protection gap of the device is broken down by an electric arc, the coulomb force of an electrode in the arc extinguishing mechanism enables an impact electric arc to preferentially enter a compression hole, the electric arc is strongly restrained by the compression hole and then is subjected to an extreme compression effect, meanwhile expansion transverse blowing airflow in a storage block directly acts on the impact electric arc along the compression hole, the airflow canbe forced by the energy weak point of the arc to move and accelerate, the arc heat and the electromagnetic energy are forced to be exhausted instantaneously, the arc is effectively extinguished, the elastic mechanism can lengthen the passing arc, and the arc extinguishing effect is enhanced.

Description

technical field [0001] The invention relates to the field of lightning protection and lightning protection, in particular to an arc extinguishing and lightning protection device. Background technique [0002] As an important link in the power system, power transmission and distribution lines are extremely important to ensure the safe operation of power transmission and distribution lines, but lightning often affects the normal operation of power transmission and distribution lines, and the number of faults such as tripping, disconnection and insulator damage caused by lightning strikes continues The tripping accident still accounts for 60% to 70% of the total accident rate of the system, and it shows an increasing trend year by year. [0003] In view of the frequent occurrence of lightning strike accidents, the existing lightning protection devices mostly adopt parallel gap lightning protection. Although the parallel gap can reduce the lightning trip rate and accident rate,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01T1/02H01T4/02H01T4/10
CPCH01T1/02H01T4/02H01T4/10
Inventor 郭伟林楠李俊松孙浩彬纪长城刘晓枫陈浩林颜大涵
Owner GUANGDONG POWER GRID CO LTD