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

Abstract

The invention discloses a high-weldability intelligent multi-layer gap overvoltage protector based on a copper-chromium alloy material, which is characterized in that a multi-layer discharge gap formed by a plurality of electrodes made of the copper-chromium alloy material is arranged in an insulating shell, each electrode is insulated and isolated by an insulating medium, a trigger electrode is designed at the lowest electrode gap of the multi-layer gap, and the trigger electrode can automatically sense, couple and receive energy of lightning overvoltage and trigger the lowest electrode gap of the multi-layer gap and other gaps to be quickly conducted, so that the three-terminal overvoltage protection gap with the multi-layer gap structure has the remarkable characteristics of high direct current breakdown voltage, high voltage protection level, short response time, high power frequency or direct current follow-up current resistance and the like. The intelligent multi-layer gap overvoltage protector can be used for protection of direct lightning stroke and lightning induction overvoltage 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 intelligent multi-layer gap overvoltage protector based on a copper-chromium alloy material and having high weldability, which is used in the electric power field and the communication field. 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 enterp...

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Problems solved by technology

[0007] The purpose of the present invention is to propose an intelligent multi-layer gap overvoltage protector with high weldability based on copper-chromium alloy materials for the defects existing in the existing laminated graphite gap, 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-freezing ability and voltage protection level of the overvoltage protection gap, and at the same time, it can significantly improve the weldability of the graphite multilayer gap and the external metal electrode to cause the overvoltage protection gap Well-known defects of poor working reliability

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