Intelligent multi-layer gap overvoltage protector based on graphite-metal coating material

The invention discloses an intelligent multi-layer gap overvoltage protector based on a graphite-metal coating material, which is composed of a plurality of graphite-metal combined electrodes, wherein 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 of the graphite-metal coating, and the trigger electrode can automatically sense, couple and receive energy of lightning overvoltage and trigger rapid conduction of the multi-layer gap, so that the three-terminal overvoltage protection gap of 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 subsequent current resistance and the like, and the intelligent multi-layer gap overvoltage protector can be used for direct lightning stroke and lightning induction overvoltage protection in application occasions such as the communi