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An Insulator String Against Graphite Bomb Damage

A technology of insulator strings and graphite, applied in the direction of insulators, electrical components, circuits, etc., can solve problems such as insulation strength reduction, insulators, transmission line damage, porcelain surface burns and falling off, etc., to ensure power supply reliability, protect insulation performance, Stable and reliable effect

Active Publication Date: 2017-01-18
王巨丰 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lightning strikes cause overvoltage, which may cause damage to insulators and transmission lines; lightning strikes cause flashover discharges on insulators, which will cause burns and fall off on the porcelain surface or cause network cracks on glass insulators, greatly reducing the insulation strength; lightning strikes on transmission lines or lightning protection line, it may cause broken strands or even rupture, so that the power transmission work cannot be carried out
[0005] In addition, during times of war or turmoil, the transmission line is also the infrastructure that saboteurs focus on destroying, and the means of destruction is mainly to throw graphite bombs in the area of ​​the transmission line, so that the graphite fibers produced after the graphite bomb explodes are attached to the umbrella skirt of the insulator string , greatly reducing the insulation performance of the insulator string, so that when a natural lightning strike is found, the transmission line is more prone to line faults
Moreover, the throwing of graphite bombs is concealed and has a wide range, which makes it difficult for maintenance personnel of transmission lines to find problems in time, and the cost of replacing insulator strings is also very high

Method used

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  • An Insulator String Against Graphite Bomb Damage
  • An Insulator String Against Graphite Bomb Damage
  • An Insulator String Against Graphite Bomb Damage

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Such as Figure 1-4 As shown, a graphite bomb-resistant insulator string includes an insulator string main body 1; a circle of injection pipes 3 are arranged at both ends of the insulator string main body 1, and the injection pipe 3 is composed of several extinguishing pipes connected in series. arc tube 301; inside the insulator string main body 1, there is an arc extinguishing path 2 composed of several sections of arc extinguishing channels 201 and arranged circularly in a Z shape from top to bottom; each section of arc extinguishing channels is placed with Two arc extinguishing thin tubes 203, and an arc guiding ball 202 is arranged between the two arc extinguishing thin tubes 203.

[0032] In the arc extinguishing path 2 , copper blocks are provided at the joints of two adjacent arc extinguishing channels 201 . The arc guiding ball 202 is a small graphite ball; the arc extinguishing thin tube 203 is a thin ceramic tube; the two sides of the copper block are provid...

Embodiment 2

[0035] An insulator string to prevent damage from graphite bombs, comprising an insulator string main body 1; a ring of injection pipes 3 are respectively arranged at both ends of the insulator string main body 1, and the injection pipe 3 is composed of several arc extinguishing tubes 301 connected in series composition; in the interior of the insulator string main body 1, there is an arc extinguishing path 2 composed of several sections of arc extinguishing channels 201 and arranged circularly in a Z shape from top to bottom; each section of the arc extinguishing channel is placed with two The arc thin tube 203 is provided with an arc guiding ball 202 between the two arc extinguishing thin tubes 203 .

[0036]The head end of the first arc extinguishing tube in the spray pipe 3 at the upper end of the insulator string main body 1 is connected to the installation fitting at one end of the insulator string through a conductor 4, and the last arc extinguishing tube in the spray pi...

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Abstract

The invention discloses an insulator chain capable of being prevented from being damaged by a graphite bomb. The insulator chain comprises an insulator chain body (1). The two ends of the insulator chain body (1) are each provided with a circle of jetting pipeline (3), and each jetting pipeline (3) is composed of a plurality of arc-extinguishing tubes (301) which are sequentially connected in series. An arc extinction path (2) which is composed of a plurality of sections of arc extinction channels (201) and is distributed in a Z shape from top to bottom in a circulation mode is arranged in the insulator chain body (1). Each section of arc extinction channel is provided with two arc extinction slim tubes (203), and an arc guide ball (202) is arranged between every two arc extinction slim tubes (203). The insulator chain is simple in structure, reasonable in design, high in arc extinction capacity, stable and reliable in working, capable of being counted, and capable of facilitating later maintenance and replacing.

Description

technical field [0001] The invention relates to a lightning protection device for a power transmission line, in particular to an insulator string for preventing graphite bomb damage. Background technique [0002] At present, people's daily life and production are highly dependent on electric energy. Once there is no electricity or a long-term power outage, many electrical appliances and production equipment cannot operate normally, seriously affecting people's lives. Electric energy is mainly transported to various places by transmission lines. [0003] 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, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B17/46H01B17/52
Inventor 吴东梁雪李国栋周政刘太东王新阳白鉴知冯凯欧芳志邵攀屹李世荣
Owner 王巨丰
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