High-weldability controllable multi-layer gap overvoltage protector based on copper-chromium alloy

Abstract

The invention discloses a high-weldability controllable multi-layer gap overvoltage protector based on copper-chromium alloy, and the overvoltage protector consists of a fixed multi-layer gap, a controllable multi-layer gap, and an intelligent controllable switch. According to the overvoltage protection gap of the engineering multi-layer structure, which is manufactured by using the high and good electric conduction and heat conduction performance, high hardness, wear resistance, explosion resistance, machinability and weldability of the copper-chromium alloy, the automatic overvoltage coupling trigger circuit of the intelligent controllable switch can automatically couple overvoltage energy to output a trigger pulse; and the three-electrode discharge switch of the intelligent controllable switch is switched on, so that the controllable part of the multi-layer gap is short-circuited, and the overvoltage gap of the multi-layer structure has the remarkable characteristics of high alternating-current and direct-current withstand voltage, high lightning voltage protection level, short response time, high power frequency or direct-current follow-up current resistance and the like. The overvoltage protector can be used for direct lightning stroke and lightning induction overvoltage protection in application occasions such as the communication field and even the electric power field.

Description

technical field [0001] The invention relates to an overvoltage protection device, in particular to an overvoltage protector based on copper-chromium alloy with high weldability and controllable multi-layer gap. Background technique [0002] With the application of switchgear in high-voltage transmission lines and the technological progress of electronic and information systems, the impact and harm of overvoltage on sensitive and weak electronic equipment and communication devices are increasing. Overvoltage protection is the key to power, An important guarantee for the safe operation of the communication system. [0003] Since the overvoltage protection spark gap of the claw electrode structure of Phoenix Contact Company of Germany and the overvoltage protection product of the laminated graphite structure of Opterman Co., Ltd. came out, many domestic research institutions and production enterprises have based on the overvoltage protection of the laminated structure. The gap...

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Problems solved by technology

[0008] The purpose of the present invention is to aim at the defects existing in the existing laminated graphite gap, and propose a high-weldability controllable multi-layer gap overvoltage protector based on copper-chromium alloy, which can significantly improve the protection performance of the multi-layer overvoltage protection gap, effectively Solve the technical problem of the mutual restriction of AC and DC voltage tolerance, anti-following ability and lightning overvoltage protection level of the overvoltage protection gap, and can also effectively solve the fatal defect of poor weldability between the traditional graphite gap and the external electrical connection metal electrode

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