Discharging gap device

Abstract

The invention relates to a discharging gap device which is an insulator protective device, belongs to the field of electric protection in a power grid, and particularly relates to the discharging gap device preventing the surface of an insulator from flashover. The discharging gap device is connected with fittings at the two ends of a compound insulator through high-voltage arc striking rings and arcing horns in an up-and-down symmetrical mode. Each high-voltage arc striking ring is designed to an oval with an opening, the two arc striking rings are horizontally and symmetrically installed, so that striking voltage is more stable, the electric arc principle is utilized to prevent the insulator from being burnt, and the interphase drying arcing distance is maintained. The two same arcing horns are horizontally and symmetrically installed, balls are utilized at the tail ends of the arcing horns to discharge, discharge times are increased, and the service life of a product is greatly prolonged. Compared with the prior art, the discharging gap device has the advantages of being suitable for the compound insulator, quick in installation, stable in discharging voltage, good in arc-resisting and arc extinguishing performance, long in service life, convenient to install, constant in grip strength, capable of restraining shaking and waving of wires, and free of damaging the wires and maintenance.

Description

technical field [0001] The invention relates to a discharge gap device, which is an insulator protection device, and belongs to the field of electrical protection in electric power networks, in particular to a discharge gap device for preventing flashover on the surface of insulators, which can solve the problem of burning insulators caused by flashover on the surface of insulators under overvoltage The problem. Background technique [0002] In order to improve the safety of the transmission line, reduce the flashover that occurs along the insulating surface during overvoltage, and the burn of the insulator surface caused by the flashover causes the insulation performance to decline, a voltage equalizing ring or an arc striking angle is often set at both ends of the insulator, and the arc striking angle is The cost is low, but the discharge voltage is unstable and the arc extinguishing ability is poor. If the circumference of the uniform ring is small, the arc will easily bu...

AI Technical Summary

Problems solved by technology

[0002] In order to improve the safety of the transmission line, reduce the flashover that occurs along the insulating surface during overvoltage, and the burn of the insulator surface caused by the flashover causes the insulation performance to decline, a voltage equalizing ring or an arc striking angle is often set at both ends of the insulator, and the arc striking angle is The cost is low, but the discharge voltage is unstable and the arc extinguishing ability is poor. If the circumference of the uniform ring is small, the discharge is easy to burn the insulator. If the circumference is large, the cost is high, and the dry arc distance between phases will be reduced if the circumference is too large.

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