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Multi-gap self-expanding strong airflow vertical blowing arc extinguishing lightning protection device

An arc extinguishing device and lightning protection technology, which is applied to corona discharge devices, electrical components, insulators, etc., can solve the problems of high re-ignition probability and short arc path, so as to reduce the re-ignition rate, improve the arc extinguishing performance, The effect of increased arc vulnerability

Active Publication Date: 2015-10-28
王巨丰 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent applied by the inventor before has played a very good role in extinguishing the power frequency arc, but there are still some shortcomings such as short arc path and relatively high probability of re-ignition.

Method used

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  • Multi-gap self-expanding strong airflow vertical blowing arc extinguishing lightning protection device
  • Multi-gap self-expanding strong airflow vertical blowing arc extinguishing lightning protection device
  • Multi-gap self-expanding strong airflow vertical blowing arc extinguishing lightning protection device

Examples

Experimental program
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Effect test

Embodiment 1

[0034] like figure 1 , figure 2 and image 3 As shown, a multi-gap self-expanding strong airflow vertical blowing arc extinguishing lightning protection device, including the vertical blowing arc extinguishing device fixedly installed on the ground end of the insulator string 1 through the grounding side connecting fitting 2, the grounding side electrode 5 and the wire side Electrode 6; the ground-side electrode 5 is installed on the vertical blowing arc extinguishing device; one end of the wire-side electrode 6 is installed on the overhead wire through a clamp, and the other end points to the ground-side electrode 5; the ground-side electrode 5 and the protective gap formed by the wire side electrode 6 are parallel to the insulator string 1; wherein, the vertical blowing arc extinguishing device includes the arc extinguishing device main body 3 and the arc extinguishing tube 8; the arc extinguishing device main body 3 is provided with several a through hole 7; the arc exti...

Embodiment 2

[0039] like Figure 4 As shown, the difference between this embodiment and Embodiment 1 is that the main body 3 of the arc extinguishing device is L-shaped, that is, an L-shaped cylinder.

[0040] The above-mentioned embodiments 1 and 2 are simple in structure, stable in operation, safe and reliable; using the volume of the main body of the arc extinguishing device, the placement shape of the arc extinguishing tube is set as a spiral shape, so that the arc path changes from a straight line to a spiral three-dimensional ring, The arc is elongated several times, and there is a sudden turn, which increases the vulnerability of the arc, which is easy to be extinguished and difficult to reignite. The multi-point vertical blowing arc extinguishing method is adopted, and the arc is used to bake the gas-producing material to generate a strong air flow to cut off the arc in multiple places at the same time. Multi-point vertical blowing can greatly increase the length of the arc breakp...

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Abstract

A multi-gap self-inflating strong-airflow protective device for lightning protection by longitudinal-blast arc extinguishing. The device comprises a longitudinal-blast arc extinguishing device installed on a grounding terminal of an insulator string (1) via a grounding-side link fitting (2), a grounding-side electrode (5) installed on the longitudinal-blast arc extinguishing device, and a conductor-side electrode (6) installed on an overhead conductor, wherein a protective gap formed by the grounding-side electrode (5) and the conductor-side electrode (6) is parallel to the insulator string (1). The longitudinal-blast arc extinguishing device comprises an arc extinguishing device main body (3) and arc extinguishing tubes (8), wherein the arc extinguishing device main body (3) is provided with several through holes for placing the arc extinguishing tubes, and the angle formed between pairwise arc extinguishing tubes which have ends in contact with each other and are placed in the arc extinguishing device main body is 90°. The arc extinguishing tubes (8) are spirals. The grounding-side electrode (5) is connected to the first arc extinguishing tube via a conductor, and the grounding-side link fitting (2) is connected to the last arc extinguishing tube via a conductor. The device has a simple structure, low manufacturing cost, security and reliability, effectively reduces the lightning tripping rate and accident rate of a power transmission line of an electric power system, and improves the stability of the electric power system.

Description

technical field [0001] The invention relates to a lightning protection protection gap device for transmission lines, in particular to a multi-gap self-expanding strong airflow vertical blowing arc extinguishing lightning protection device which can elongate the arc path, weaken the arc, and adopt a multi-point vertical blowing arc extinguishing method. Background technique [0002] Lightning protection of transmission lines has always been an important part of the lightning protection work of the power sector, and lightning faults are still one of the important factors affecting the safety of the power grid. Lightning strikes on transmission lines cause flashover of line insulators, and the resulting power frequency freewheeling damages insulator strings and fittings, resulting in burnt insulator strings and wire burnout accidents. The traditional "blocking" lightning protection methods, such as transforming the grounding resistance of towers, erecting coupling ground wires ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B17/46H01B17/48
CPCH01T19/04
Inventor 王巨丰王嬿蕾郭伟刘其良梁雪吴东
Owner 王巨丰
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