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Series gap arrester

A technology of series gap and arrester, applied in the direction of spark gap overvoltage arrester, spark gap, overvoltage protection resistor, etc., can solve the problem of affecting the service life of the arrester and the effect of discharging lightning current, poor corrosion resistance and aging resistance , insulator umbrella leaves burn and flash off and other problems, to achieve the effect of light weight, strong aging resistance and strong ultraviolet rays

Active Publication Date: 2014-02-26
吉林市能兴电力设备有限公司
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Problems solved by technology

But its disadvantage is that it is too close to the insulator umbrella leaf. When the lightning current is too large, it is easy to cause the insulator umbrella leaf to burn and flash off, and damage the insulator, affecting the service life of the arrester and the effect of lightning current discharge.
At the same time, the existing rings are all made of aluminum, which has poor arc burning resistance, corrosion resistance and aging resistance.

Method used

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Embodiment Construction

[0018] refer to figure 1 and figure 2 As shown, a series gap lightning arrester includes a lightning arrester main body 1, an insulator 2 arranged on the lightning arrester main body 1, an upper discharge rod 3 and a lower discharge rod 4 arranged at both ends of the insulator 2, the upper discharge rod 3 and the lower discharge rod 4 The discharge rods 4 are relatively arranged and an air gap is formed between the upper discharge rod 3 and the lower discharge rod 4; the gap between the upper discharge rod 3 and the lower discharge rod 4 is fixed on the insulator; the upper discharge rod and the lower discharge rod All are made of carbon fiber, high carbon graphite, copper powder, white steel powder and conductive resin; among them, the weight percentage of carbon fiber is 20%, the weight percentage of high carbon graphite is 40%, and the weight percentage of copper powder is 5%, white steel powder accounts for 5% by weight, and conductive resin accounts for 30% by weight; w...

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Abstract

The invention discloses a series gap arrester comprising an arrester body, an insulator, an upper discharge rod and a lower discharge rod. An air gap is formed between the upper discharge rod and the lower discharge rod, and the air gap between the upper discharge rod and the lower discharge rod is fixed on the insulator. The upper discharge rod and the lower discharge rod are respectively formed by pressing, by weight, 20% of carbon fiber, 40% of high-carbon graphite, 5% of copper powder, 5% of white steel powder and 30% of conductive resin. The carbon fiber is rod-shaped, circular, octagonal, elliptic or oblong. No umbrella leaf flash-down phenomenon is caused. The series gap arrester has the characteristics of high strength (five times that of steel parts), strong heat resistance (resistant to high temperature above 2000 DEG C), small thermal expansion coefficient, small specific gravity (one fifth that of steep parts), light weight, arc resistance, corrosion resistance and strong aging and UV resistance. The carbon fiber can be permanently used.

Description

technical field [0001] The invention relates to a series gap lightning arrester. [0002] Background technique [0003] The working principle of the arrester is that when the line is impacted by lightning current, the current discharges through the upper and lower discharge gaps on the insulator. And through the zinc oxide surge arrester resistor plate step-down filter, the residual current is led to the earth through the tower grounding. The existing ones all use two circular rings, which are added at both ends of the insulator. The advantage is that it is not limited by the direction, and the discharge distance will not be changed even if the discharge ring is rotated. But its disadvantage is that it is too close to the umbrella leaf of the insulator. When the lightning current is too large, it is easy to cause the umbrella leaf of the insulator to burn and flash off, and damage the insulator, affecting the service life of the arrester and the effect of lightning current...

Claims

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Application Information

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IPC IPC(8): H01T4/00H01T4/02H01C7/12
Inventor 潘龙雨潘英吉付乃林
Owner 吉林市能兴电力设备有限公司
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