Pure air gap arrester

Abstract

The invention discloses a pure air gap arrester. The pure air gap arrester comprises a discharge counter, a discharge counter frame, a suspension beam below the discharge counter frame, an arrester main body, an upper gap rod, a fixing universal hook, a lower gap rod, an insulator, and a connection wire mounting hole, wherein the arrester main body and the insulator are arranged in parallel; both the upper gap rod and the lower gap rod are made of, by weight, carbon fiber 40%, high-carbon graphite 40%, copper powder 5%, white steel powder 5% and conductive resin 30% by pressing, wherein the carbon fiber is in a bar-like, round, octagonal, elliptical or ovale shape. The pure air gap arrester provided by the invention has the advantages of long service life, high stability, high strength, low specific gravity, light weight, and high resistance to heat, corrosion and radiation.

Description

Technical field [0001] The invention relates to a pure air gap arrester. Background technique [0002] The working principle of the arrester is that when the line is impacted by lightning current, the current is discharged through the discharge gap on the insulator. After the current is reduced by the zinc oxide arrester resistor, the residual current is discharged to the earth through the ground of the tower. Existing lightning arresters use an angle iron installed on the tower head of the transmission line, and a zinc oxide arrester is installed on the angle iron. The upper discharge gap installed on the arrester is vertically suspended above the wire. When a lightning strikes overvoltage, the upper gap of the arrester Discharge the wire directly, it is easy to cause the wire to burn out at high temperature. In addition, in a thunderstorm, the wire will naturally swing when the wind is strong, causing the distance between the wire and the discharge gap of the arrester to ...

AI Technical Summary

Problems solved by technology

The existing lightning arresters all use an angle iron installed on the tower head of the power transmission line, and a zinc oxide arrester is installed on the angle iron. The upper discharge gap installed on the arrester is vertically suspended above the wire. Discharge directly to the wire, and it is easy to cause the wire to burn out when arcing at high temperature

In addition, in thunderstorm weather, the wire will swing naturally when the wind is strong, causing the distance between the discharge gap between the wire and the arrester to fluctuate with the wind.

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