CN103199349B - Earthing module - Google Patents

Abstract

A grounding module, including a module body, characterized in that: the basic composition of the formula of the module body is as follows: 13-17 parts of coke powder, 1.5-8 parts of cement, 0.3-5 parts of graphite powder, the parts parts by weight; the formulation also includes 0.3 to 5 parts of an ion-releasing agent, and the parts are parts by weight. The advantage of the present invention is that: the grounding module uses natural non-metallic mineral materials with good electrical conductivity and excellent soil affinity as the conductive medium of the module, and its conductivity is not affected by seasons, thus providing stable grounding resistance, and non-metallic The material forms a relatively flat low-resistance area between the metal with a huge difference in resistivity and the soil, which reduces the step voltage and contact voltage, and reduces the probability of ground potential counterattack. With the ion releaser, it can infiltrate at a high concentration for a long time In the soil, the purpose of quickly reducing the grounding resistance is achieved, and the density, corrosion resistance, conductivity, and compressive strength of the grounding module are enhanced.

Description

Grounding module

technical field

The invention relates to the technology of a grounding device for conducting electricity, in particular to a grounding module connected with wires.

Background technique

There is a Chinese utility model patent with the patent number CN94230002.5 titled "Low Resistance Grounding Module", which discloses a low resistance grounding module, which is cast from non-metallic electrolytic gel and wrapped with a pole core inside. One or both ends of the core protrude from the module body, and it is connected with lightning protection and lightning protection equipment by fasteners. When the grounding module is long or heavy, a mesh or rod-shaped skeleton can be set in the module body to prevent breaking. The grounding resistance has the characteristics of low resistance and anti-corrosion, and its resistance change rate is less than or equal to 20% after being subjected to a large current impact. This patented technology has played a positive role in overcoming the inconvenience of using the traditional technology of resistance reducing agents. However, the low-resistance grounding module disclosed in this patent is cast from pole cores and non-metallic electrolytic gels. Because it is used as an electrode The metal pole core is located in the resistance-reducing layer as a whole, and is in contact with the electrolyte ions as a conductive substance. Not only is the corrosion serious, the service life is short, and more importantly, the raw materials and structural design of the grounding module are unreasonable, resulting in unstable conduction. Inhomogeneous; and the module is cast from the pole core and non-metallic electrolytic gel, so the firmness and strength are not high. Therefore, the raw material and structure of the low-resistance grounding module need to be further improved.

Contents of the invention

The technical problem to be solved by the present invention is to provide a grounding module with light weight, high strength, good electrical conductivity and long service life in view of the above-mentioned current state of the art.

The technical solution adopted by the present invention to solve the above technical problems is: the grounding module includes a module body, which is characterized in that: the basic composition of the formula of the module body is as follows: 13-17 parts of coke powder, 1.5-8 parts of cement , 0.3-5 parts of graphite powder, the parts are parts by weight.

As an improvement, the formula also includes 0.3-5 parts of an ion releasing agent, and the said part is a weight part, so as to maximize the ionized soil conductivity of the electrolyte.

Further improvement, the ion release agent is one or more mixtures of calcium chloride, sodium chloride, magnesium chloride, through decomposition, penetrates into the surrounding soil to improve soil conditions and increase electrical conductivity.

As a further improvement, the module body is embedded with a conductive grounding body that can be conveniently connected with wires.

In a further improvement, the conductive grounding body is a grounding metal rod or a grounding metal block, or a non-metallic block with good electrical conductivity, which is in close contact with the soil of the earth, and safely dissipates the energy of lightning to make it leak into the earth.

As a further improvement, the module body is provided with a reserved hole capable of placing a conductive grounding body.

Further improvement, the manufacturing method of the grounding module includes the following steps, according to the above formula ratio, mixing coke powder, cement, and graphite powder together, and stirring evenly, adding water until the mixture is viscous, and then mixing the viscous The mixture is placed in the mold body to form, and it is placed in the mold for 1 to 7 days to remove the mold body, which is the finished product; if the formula also includes an ion release agent, mix the ion release agent with coke powder, cement, and graphite powder. , and the rest of the steps are the same as above.

Compared with the prior art, the basic composition of the formula of the modular body of the present invention is as follows: 13-17 parts of coke powder, 1.5-8 parts of cement, 0.3-5 parts of graphite powder, and the parts are parts by weight. The advantage of this formula is: first, because coke powder exists in described grounding module, so itself has very strong hygroscopic and moisture-retaining ability, makes grounding module itself keep wet state, and can keep the surrounding soil moist, thereby It ensures that the grounding module has a good conductive effect; secondly, the raw materials for making the grounding module, coke powder, cement and graphite powder all have good conductivity, especially graphite powder and coke powder have strong conductivity. Therefore, the grounding module made of three kinds of raw materials itself has excellent electrical conductivity, that is, the use of the above-mentioned materials has excellent soil affinity and conductive medium, and its electrical conductivity is not affected by the season, thus providing stable grounding resistance, and non-metallic The material forms a relatively flat low-resistance area between the metal with a huge difference in resistivity and the soil. When a large current impacts, it can reduce the transient potential gradient of the grounding body and the grounding wire, reduce the step voltage and contact voltage, and reduce the occurrence of The probability of counterattack by ground potential; Fourth, this grounding module is made of cement, coke powder and graphite powder, which has the characteristics of high density, strong corrosion resistance, high conductivity, and high compressive strength; Fifth, this The invention also includes an ion release agent in the formula, such as: calcium chloride, sodium chloride, magnesium chloride, one or more electrolyte materials such as a mixture, so that the electrolyte can penetrate into the soil at a high concentration and for a long time to achieve rapid The purpose of reducing the grounding resistance, and then further improving the conductive performance of the grounding module.

detailed description

Below in conjunction with embodiment the present invention is described in further detail.

Implementation 1. The grounding module includes a module body. The basic composition of the module body is as follows: 13 parts of coke powder, 5.5 parts of cement, and 5 parts of graphite powder. The parts mentioned are parts by weight.

Implementation 2. This grounding module includes a module body, which is characterized in that: the basic composition of the formula of the module body is as follows: 13 parts of coke powder, 5.5 parts of cement, and 5 parts of graphite powder, and the parts mentioned are parts by weight.

Embodiment 3, the grounding module includes a module body, and the basic composition of the formula of the module body is preferably as follows: 17 parts of coke powder, 8 parts of cement, and 5 parts of graphite powder.

Implementation four, this grounding module includes a module body, the basic composition of the formula of the module body is as follows: 13 parts of coke powder, 5.5 parts of cement, 5 parts of graphite powder, 1 part of calcium chloride, and the parts are by weight share.

Implementation five. This grounding module includes a module body, which is characterized in that: the basic composition of the formula of the module body is as follows: 13 parts of coke powder, 5.5 parts of cement, 5 parts of graphite powder, and 3 parts of sodium chloride. The parts are parts by weight.

Embodiment 6, the grounding module includes a module body, and the basic composition of the formula of the module body is preferably as follows: 17 parts of coke powder, 8 parts of cement, 5 parts of graphite powder, and 5 parts of magnesium chloride, and the parts are by weight share.

Of course, the above-mentioned ion release agent can also be one or more mixtures of calcium chloride, sodium chloride, and magnesium chloride. The module body is embedded with a conductive grounding body which can be conveniently connected with wires. The conductive grounding body is a grounding metal rod or a grounding metal block, or a non-metallic block with good electrical conductivity. The module body is provided with a reserved hole capable of placing a conductive grounding body.

The manufacturing method of the grounding module preferably includes the following steps, according to the above-mentioned formula ratio, mixing coke powder, cement, and graphite powder together, stirring evenly, adding water until the mixture is viscous, and then placing the viscous mixture in Molding in the mold body, place it for 1 to 7 days to remove the mold body, and it is the finished product; if the formula also includes an ion release agent, mix the ion release agent with coke powder, cement, graphite powder, and the rest The steps are the same as above.

The implementation principle of this embodiment is: during construction, the grounding module can be buried horizontally and vertically, and its depth must reach the constant humidity layer but not less than 0.8 meters. The deeper the effect, the better; the distance between modules is recommended to be 4 meters If the environmental conditions do not permit, it can be moderately widened or reduced; when the grounding wire is connected to the grounding module, ESTWELD exothermic welding is used for connection, and when it is connected with the grounding module, please add water and mash it into a paste to facilitate its close contact with each other to improve the heat dissipation. The resistance effect; in order to obtain a higher resistance reduction effect of the grounding module, water can be injected after installation.

Claims (1)

1. A grounding module, comprising a module body, characterized in that: the basic composition of the formula of the module body is as follows: 13 to 17 parts of coke powder, 1.5 to 8 parts of cement, and 0.3 to 5 parts of graphite powder; The formula also includes 0.3 to 5 parts of an ion release agent, and the parts are parts by weight; the ion release agent is one or more mixtures of calcium chloride, sodium chloride, and magnesium chloride; the module body is embedded with A conductive grounding body that can be easily connected to a wire; the conductive grounding body is a grounding metal rod or a grounding metal block, or a non-metallic block with good electrical conductivity; Leave holes; the manufacturing method of the grounding module includes the following steps, the formula ratio, coke powder, cement, graphite powder, ion releasing agent are mixed together, and stirred evenly, then add water until the mixture is viscous, Then place the viscous mixture in the mold body for molding, leave it for 1-7 days to remove the mold body, and the finished product is obtained.