Totally-worry-free lightning arrester

Abstract

The invention discloses a full-worry-free lightning arrester which comprises a vertical discharge system and a multi-cavity system, the vertical discharge system is arranged on a synthetic sheath of a lightning arrester, electrodes comprise an upper electrode and a lower electrode, the upper electrode and the lower electrode are arranged at intervals in the axial direction of the lightning arrester, the upper electrode is located above the lower electrode, and the multi-cavity system is located above the lower electrode. A discharge gap is formed between the upper electrode and the lower electrode; a multi-cavity system is annularly arranged on the synthetic sheath of the lightning arrester; a plurality of spherical electrodes are arranged along the side wall of the synthetic sheath in an annular array, an arc extinguish chamber is arranged at the position of every two adjacent spherical electrodes, the arc extinguish chambers are located on the synthetic sheath, each arc extinguish chamber is a cavity with a single opening, and the opening of each arc extinguish chamber is an arc nozzle; the lightning arrester has the advantages of being simple in structure, good in protection performance, not prone to being affected with damp and aging elements and the like. The device does not depend on the size of the grounding resistance of a product, so that the device has no special requirement on the grounding resistance of a tower, is convenient to install especially for lines in mountainous areas, and saves the grounding cost.

Description

technical field [0001] The invention belongs to the technical field of lightning arresters, in particular to a worry-free lightning protection device. Background technique [0002] The arrester is an electrical appliance used to protect electrical equipment from high transient overvoltage hazards and limit the freewheeling time and often limit the freewheeling value. Its main material is zinc oxide. The arrester is usually connected between the grid wire and the ground wire, and sometimes it is also connected next to the electrical winding or between the wires. [0003] Chinese patent CN212874187U discloses a series-gap metal zinc oxide arrester, which includes a arrester body, on the outer wall of the arrester body, electrical equipment connected to the wire is installed through a drain ring, and the bottom end of the electrical equipment is connected to the arrester body through an insulator bracket. The clamping ring and grounding protection, the outer wall of the clamp...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the ability of zinc oxide surge arrester valves to withstand power frequency voltage is closely related to the duration of action. Long-term exposure to high frequency power frequency voltage can easily cause problems such as thermal collapse and aging of zinc oxide surge arresters.

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