Method for preventing rust and reducing grounding resistivity for lightning protection grounding body

A technology of grounding resistance and lightning protection grounding, which is applied in the direction of contact manufacturing and connecting contact materials, etc., can solve the problems of single anti-corrosion metal protective material layer, waste of land, materials, unstable grounding resistance, etc., and achieve good combination , Easy to transport, stable grounding resistance

Inactive Publication Date: 2012-04-04
刘建华 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for anti-corrosion of lightning protection grounding body and reducing grounding resistance, so as to overcome the single layer of anti-corrosion metal protection material layer, poor anti-corrosion performance, short service life, unstable grounding resistance and easy Problems such as potential safety hazards, bulky, fragile, difficult transportation and installation, waste of land and materials, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Under normal temperature and pressure, take a round steel with a diameter of φ12mm and a length of 2500mm, plate the surface of the round steel with a 0.20mm thick copper layer according to the traditional electroplating method, and then plate a 0.20mm thick nickel layer on the copper surface to obtain an anti-corrosion Corroded alloy rods; put the alloy rods into the braiding machine under normal temperature and pressure, weave a layer of conductive graphite wire sleeves with a thickness of 5mm and a carbon content of more than 99.8% on the surface, and then put the alloy rods with wire sleeves into Squeeze and flatten the patterns and gaps of the line sleeve with 20kg of extrusion force in the extrusion troweling machine, eliminate the reactance generated by the patterns, reduce the resistance to 0.25Ω.m, and prepare the resistance-reducing layer of graphite conductive material; Under normal temperature and pressure, 10kg of coating-grade polyvinyl alcohol powder and 9...

Embodiment 2

[0016] Technological process is with embodiment 1. Copper 0.12mm and nickel 0.12mm on the steel surface to obtain an anti-corrosion layer; take a graphite wire sleeve with a carbon content of 90%, and squeeze the graphite wire sleeve to 8kg to obtain a graphite resistance-reducing layer in the longitudinal conductive direction; take The carbon content is 90%, the number of meshes is 100 mesh graphite phosphorus flake powder, polyvinyl alcohol powder 8kg, and water 90kg to prepare conductive resistance-reducing cement. The service life of the product prepared by this method is only 18 years, and the water retention is low. Difference.

Embodiment 3

[0018] Technological process is with embodiment 1. Copper 0.25mm on steel surface, nickel 0.25mm to make anti-corrosion layer; graphite wire sleeve with 95% carbon content, extrusion force to graphite wire sleeve is 10kg, make longitudinal conductive direction resistance-reducing layer; take carbon content as 95%, the mesh number is 80 mesh graphite phosphorus flake powder, polyvinyl alcohol powder 9kg, and water 11kg makes conductive resistance-reducing cement. The service life of the product made by this method is 20 years, and the grounding resistance is reduced, which cannot reach the 0.25Ω index requirement.

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Abstract

The invention relates to a method for preventing rust and reducing grounding resistivity for a lightning protection grounding body, which mainly solves the problems of singleness in rust-resistant plating metal protection materials, poor rust-resistant performance, short service life, instability in grounding resistivity, high potential safety hazards, high weight, breakability, difficulty in carrying and mounting and occupation of the ground. The surface of the steel grounding body is plated with nickel after being plated with copper, the rust resistance of the grounding body is superior to that of an existing grounding body singly subjected to copper or nickel plating anti-corrosion process, the service life of the grounding body can be up to 30 years, and the grounding resistivity is stable, safe and reliable. High-carbon flexible conductive graphite wire jackets are high in ductility, free of being pulverized or smashed and low in electric resistivity, the conductive direction can be changed into longitudinal conductive direction by means of extrusion, reactance is overcome, electric resistivity is low, current can be dispersed fast, and simultaneously, the grounding body is combined firmly with resistivity-reducing plaster film attached on the surface thereof during reduction of electric resistivity. The resistivity-reducing plaster film composited by coating level polyving alcohol glue and high-carbon graphite phosphorus powder has the advantages that the resistivity-reducing plaster film is solid before being mounted, stick-proof and easy to transport, carry and mount and after being mounted, can expand by 20 times when absorbing moisture, and thereby, water and soil can be combined excellently and lightning flowing to the ground can be released quickly.

Description

Technical field [0001] The invention relates to a method for anti-corrosion and reducing grounding resistance of a lightning protection grounding body. Background technique [0002] At present, there are many methods for anti-corrosion and reducing grounding resistance of lightning protection grounding body at home and abroad, such as: galvanizing or copper or nickel layer on the surface of steel to improve anti-corrosion ability, using cement as adhesive on the surface of the metal body, Bentonite and pottery clay are used as moisture-absorbing and water-retaining agents, and graphite powder is used as a conductive medium to reduce grounding resistance. Although these methods have the effect of anti-corrosion and reducing grounding resistance, there are problems to varying degrees, such as: Single galvanizing, copper plating or nickel plating on the surface of the steel body, the coating is thin and the amount is limited, resulting in pinholes, pores, penetration of corrosi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01R4/66H01R43/16
Inventor 刘建华黄凤山黄宏渊
Owner 刘建华
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