CN203134992U

CN203134992U - Long-acting nonmetal earthing device

Info

Publication number: CN203134992U
Application number: CN 201320009218
Authority: CN
Inventors: 张立涛; 张立波; 丁勇
Original assignee: 张立涛
Priority date: 2013-01-09
Filing date: 2013-01-09
Publication date: 2013-08-14
Anticipated expiration: 2023-01-09

Abstract

Disclosed in the utility model is a long-acting nonmetal earthing device that comprises a graphite electrode core made of a flexible graphite composite material as well as a module body formed by combination of a conductive graphite powder, an adhesive, and a conductive fiber. The graphite electrode core penetrates the module body; and when the module body is prepared, the graphite electrode core is pressed in the module body. The graphite electrode core is in a band shape, a string shape or a cylinder shape and has the random length; and the graphite electrode core has the advantages of high tensile strength, good flexibility, corrosion resistance, high power frequency resistance, and impact current shock resistance; and compared with the pure graphite structure, the structure of the graphite electrode core enables the grounding body resistor to be low. In addition, the module body that is formed by high-pressure moulding has the following characteristics: the structure is compact, the physical and chemical properties are stable, the body is resistant to coldness and heat; the conductive performance is not influenced by the seasons; the surface area is large; the area of the contact with the earth is larger than that of the traditional metal earth electrode; the current scattering area of the earth electrode can be increased; the resistance of the contact of the earth electrode with the earth can be substantially reduced; and the welding and anticorrosion operations of the existing resistance reduction module connecting point can be saved.

Description

Long-acting nonmetal earthing device

Technical field

The utility model relates to a kind of electric device, specifically, relates to a kind of long-acting nonmetal earthing device that is applicable to overhead line structures and transformer station's electric equipment, belongs to technical field of electricity.

Background technology

The earthing device in electric power, communication, railway system field mainly contains metal species and metal and graphite material complex class at present, and metal species is divided into zinc-plated iron-steel goods, copper plated steel ironwork, fine copper goods, alloy product again; Metal and graphite material complex class are divided into metal and graphite mo(u)ld briquetting system product and sintering block and metal connecting line goods again.These products all have lightning protection and safety protection function.

In realizing process of the present invention, the inventor finds to exist at least in the prior art following problem, metal species is not corrosion-resistant, particularly corrode particularly serious in saline and alkaline area and the high area of chloride ion content, cause useful life short, the maintenance difficulty, waste material, and product manufacturing power consumption is high, contaminated environment, do not meet the friendly policy of National Environmental, though metal and graphite material complex class product resistance reducing effect are good, but the electrode cores that adopts with the equipment tie point remains metallic article, hinder module and the space occurs with falling when the corrosion back takes place the metal electrode core, earth resistance increases naturally and causes product failure; The nonmetal graphite earth electrode is made up of the conductive jacket of inner conductive graphite core and the braiding of external conductive graphite line, and there are the following problems: the resistance Chinese People's Anti-Japanese Military and Political College that the outer surface conductive jacket produces.And the graphite core of braiding trouble, inside is loose, no cohesion, and resistivity is big, the scope of application is little, and this series products uses only in the comparatively low area of resistivity, in the high mountain area of soil resistivity, poor because of ground surface environment, execution conditions are received restriction, and traditional ground connection technology pattern is difficult to meet the requirements.

The utility model content

Problem to be solved in the utility model is at above defective, and the long-acting nonmetal earthing device of a kind of long service life, energy-conserving and environment-protective is provided.

For addressing the above problem, the utility model adopts following technical scheme: long-acting nonmetal earthing device is characterized in that: the graphite electrode core that described long-acting nonmetal earthing device is made by the flexible graphite composite material and be made up of the module body that electrically conductive graphite powder, adhesive and conductive fiber are composited;

The graphite electrode core runs through module body, during the preparation module body graphite electrode core is suppressed in module body.

A kind of prioritization scheme, described module body are rectangle or cylindrical.

The utility model adopts above technical scheme, compared with prior art, have the following advantages: the graphite electrode core is made up of the flexible graphite composite material, product is band shape, rope form, cylindric and random length, has the tensile strength height, flexible good, anticorrosive, anti-big power frequency impacts with impulse current, it is lower to compare pure graphite-structure earth electrode resistance, is more useful in the area of geavy salt alkali, can replace traditional ground connection polar body; Module body is by high electrically conductive graphite powder, adhesive, the compound composition of conductive fiber, through high pressure compression moulding, it is tight to have structure, physicochemical property is stable, anti-high and cold high heat, electric conductivity is not subjected to seasonal effect, surface area is big, bigger than traditional metal earth electrode with the contact area of soil, increased the diffusing flow area of earth electrode self, greatly reduce the contact resistance of earth electrode and soil, removed existing welding and preservative process of falling resistance module tie point from, make its construction more convenient, especially be fit to use in the extra high mountain area of soil resistivity, uses such as hills and heavy minefield.

Below in conjunction with drawings and Examples the utility model is elaborated.

Description of drawings

Accompanying drawing 1 is the structural representation of long-acting nonmetal earthing device among the utility model embodiment 1;

Accompanying drawing 2 is the structural representation of long-acting nonmetal earthing device among the utility model embodiment 2;

Among the figure,

1-graphite electrode core, the 2-module body.

Specific embodiment

Embodiment 1, and as shown in Figure 1, long-acting nonmetal earthing device comprises graphite electrode core 1 and module body 2 compositions, and graphite electrode core 1 runs through module body 2, during preparation module body 2 graphite electrode core 1 is suppressed in module body 2, and module body 2 is rectangle.

Embodiment 2, and as shown in Figure 2, long-acting nonmetal earthing device comprises graphite electrode core 1 and module body 2 compositions, and graphite electrode core 1 runs through module body 2, during preparation module body 2 graphite electrode core 1 is suppressed in module body 2, and module body 2 is cylindrical.

Graphite electrode core 1 is made up of the flexible graphite composite material, product is band shape, rope form, cylindric and random length, has the tensile strength height, flexible good, anticorrosive, anti-big power frequency impacts with impulse current, it is lower to compare pure graphite-structure earth electrode resistance, be more useful in the area of geavy salt alkali, can replace traditional ground connection polar body.

Module body 2 is by high electrically conductive graphite powder, adhesive, the compound composition of conductive fiber, through high pressure compression moulding, it is tight to have structure, physicochemical property is stable, anti-high and cold high heat, electric conductivity is not subjected to seasonal effect, surface area is big, bigger than traditional metal earth electrode with the contact area of soil, increased the diffusing flow area of earth electrode self, greatly reduce the contact resistance of earth electrode and soil, removed existing welding and preservative process of falling resistance module tie point from, make its construction more convenient, especially be fit to use in the extra high mountain area of soil resistivity, uses such as hills and heavy minefield.

Can be applied to:

1. working earthing, safety ground and lightning protections such as power plant, transformer station, switchyard, ultra-high-tension power transmission line, electric railway, telecommunications, mobile communication base station, microwave relay station, ground satellite receiving station, radar station.

2, working earthing and protective earthings such as valuable precision instrument, computer room equipment, post and telecommunications program-controlled equipment, radio and television equipment, electromedical equipment.

3, lightning protections such as various skyscrapers and tall and big structures, showplace ancient building, tall and big memorial tower.

4, petroleum transportation pipeline and oil gas jar, flammable and explosive substance warehouse lightning protection.

5, need apply all ground networks of grounding system protection.

Claims

1. long-acting nonmetal earthing device, it is characterized in that: described long-acting nonmetal earthing device is formed by module body (2) with by the graphite electrode core (1) that the flexible graphite composite material is made;

Graphite electrode core (1) runs through module body (2), during preparation module body (2) graphite electrode core (1) is suppressed in module body (2).

2. long-acting nonmetal earthing device as claimed in claim 1 is characterized in that: described module body (2) is rectangle or cylindrical.