Metal oxide lightning arrester with high heat dissipation performance

Abstract

The invention discloses a metal oxide lightning arrester with high heat dissipation performance, including a shell, a hollow insulating cylinder is mounted in the shell; a heat dissipation cavity is formed in the hollow insulating cylinder; a heat conduction plate is mounted in the heat dissipation cavity; an upper end cover is mounted at the top end of the shell; a rubber air bag is mounted in the upper end cover; a moisture-proof cavity is formed in one side of the rubber air bag; and the outer part of the shell is sleeved with a windproof cover. The metal oxide lightning arrester is scientific and reasonable in structure, and is provided with the heat dissipation cavity and the heat conduction plate, so the heat dissipation performance in the lightning arrester is improved; the operation stability and reliability of the lightning arrester in long-term work are ensured; by arranging the rubber air bag and the moisture-proof cavity, the sealing performance and the moisture-proof performance inside the upper end cover of the lightning arrester are improved, the lightning arrester is prevented from being damped and damaged, the problems that the lightning arrester is too high in installation position, large in wind power and infirm in installation are solved by arranging a wind shield, and the wind resistance of the lightning arrester is improved.

Description

technical field [0001] The invention relates to the technical field of metal oxide arresters, in particular to a metal oxide arrester with strong heat dissipation. Background technique [0002] Metal oxide surge arresters are an important device often used in communication cables to prevent lightning damage. Surge arresters are sometimes called overvoltage protectors and overvoltage limiters. Surge arresters are connected between cables and the ground, usually with the protected equipment Parallel connection, the lightning arrester can effectively protect the communication equipment. Once abnormal voltage occurs, the lightning arrester will act and play a protective role. When the communication cable or equipment is running under the normal working voltage, the lightning arrester will not work. For the ground It is regarded as an open circuit. Once a high voltage appears and endangers the insulation of the protected equipment, the arrester will act immediately to guide the h...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a metal oxide arrester with strong heat dissipation, to solve the problem that the metal oxide arrester in the above-mentioned background technology exists during use, the heat dissipation performance inside the arrester is poor, and the heat generated inside the arrester cannot be dissipated in time. Absorption, the stability and reliability of the operation of the arrester during long-term work are poor, and the sealing performance and moisture-proof performance inside the upper end cover of the arrester are poor, and the arrester is easily damaged by moisture.

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