Low-voltage end electrode of power transmission line gap lightning arrester

Abstract

The invention relates to a low-voltage end electrode of a power transmission line gap lightning arrester. The low-voltage end electrode comprises a cylindrical body, a circular table fastening end, acylinder connecting section, a cylinder inner electrode end and a hemispherical inner electrode head; the medial axis wires of the cylindrical body, the circular table fastening end, the cylinder connecting section, the cylinder inner electrode end and the hemispherical inner electrode head are all shared; the big end outer diameter of the circular table fastening end, the outer diameter of the cylindrical body, the outer diameter of the cylinder inner electrode end and the radius of the hemispherical inner electrode head are all equal and are greater than the outer diameter of the cylinder connecting section; and a ring of annularly fastened grooves are formed in the outer periphery of the cylinder connecting section. By virtue of a gap formed by the hemispherical inner electrode head andthe internal electrode of the gap lightning arrester, an arc extinguishing function is achieved; the circular table fastening end is connected with the base of the gap lightning arrester; and the lightning impulse led to the gap lighting arrester is released to the ground through the base connected to the low-voltage end electrode, so that a circuit and an insulator can be protected from damage.

Description

technical field [0001] The invention relates to the technical field of lightning protection for power system transmission lines, in particular to a low-voltage terminal electrode of a gap arrester for transmission lines. Background technique [0002] In recent years, the multi-chamber gap surge arrester technology has developed rapidly. This technology uses the rapid expansion of the air in the chamber in the multi-chamber gap under the action of the burning arc plasma to generate explosive force. Under the joint action of blasting force and electromagnetic power, blowing The arc channel guides the energy of the high-temperature and high-pressure gas to release quickly and strongly into the atmosphere to realize the functions of blowing and extinguishing the arc. [0003] During the work of the multi-chamber gap lightning protection device, the low-voltage electrode plays the role of connecting the multi-chamber gap body and the fixed base, ensuring the path for the lightnin...

AI Technical Summary

Problems solved by technology

The design of the low-voltage electrode should meet the flow capacity of the arrester, and at the same time ensure that the low-voltage connection part of the multi-chamber gap can withstand the impact force and electromagnetic power brought by the rapid expansion of the air, so as not to cause strong driving force caused by the rapid expansion of the air. The electrode is loose and falls off, causing the function of the arrester to fail

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