Grounding electrode of anti-corrosion and adjustable grounding resistor

Abstract

The invention relates to a grounding electrode in a lightning protection grounding system of a power station, a transformer grounding network, a high-voltage power transmission line iron tower, an electrified railway grounding system, a wireless communication transmitting tower, a transformer neutral point, a high-rise building, a large computer and a microelectronic equipment system equipment center. The grounding electrode comprises a grounding electrode main body which is a thick-walled and seamless steel tube; the thickness of the wall of the steel tube is more than 8-10mm, the inner wall and the outer wall thereof are provided with an anti-corrosion conducting film, the lower end thereof is provided with a sealing head, the top end thereof is provided with an openable packing port, and the wall thereof is provided with a releasing hole; and the steel tube is externally provided with an external packing with good electric conduction, corrosion prevention and water permeability, and an interface connected with the grounding network and an equipment grounding lead. The grounding electrode has convenient and fast installation and construction, good resistance-reducing effect and convenient maintenance with the service life thereof of being not lower than that of the grounding equipment, and is a grounding electrode which not only meets the anti-corrosion function of the grounding electrode in the grounding network, but also reduces the grounding resistance performance of the grounding electrode.

Description

technical field [0001] The invention relates to grounding poles of power plants and substation grounding grids, iron towers of high-voltage transmission lines, grounding systems of electrified railways, wireless communication transmission towers, grounding poles of neutral points of transformers, and equipment centers of high-rise buildings, large computers, and microelectronic equipment systems. The grounding electrode in the lightning protection grounding system, the resistance reduction of the grounding electrode, the anti-corrosion of the grounding electrode, and the technical field of grounding electrode production. Background technique [0002] The grounding electrode refers to the part of the grounding wire buried in the ground, generally including the grounding electrode of the power plant, the grounding grid of the substation, the iron tower of the high-voltage transmission line, the grounding system of the electrified railway, the wireless communication tower, the g...

AI Technical Summary

Problems solved by technology

[0005] At present, methods to reduce grounding resistance are commonly used in the field: such as installing a large number of graphite resistance-reducing modules and grounding electrodes that can release electrolytes. There is a certain amount of pollution, and the grounding resistance cannot be kept stable for a long time

After many years, the grounding resistance has rebounded, and it is difficult to reduce the grounding resistance. The only way to replace it is to invest a lot of money again, and it will take a lot of manpower and material resources.

In general, graphite resistance modules can only be added to reduce grounding resistance, and graphite resistance-reducing powder is used to bury grounding grid wires and grounding electrodes, or copper-clad steel is used to release electrolyte grounding electrodes. Steel is corrosive to a certain extent, especially the galvanized grounding electrode is severely corroded by the use of graphite resistance reducing agent, and it will cause irreversible pollution to groundwater and soil environment

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