CN210074181U

CN210074181U - Low ground resistance ground structure

Info

Publication number: CN210074181U
Application number: CN201920646120.7U
Authority: CN
Inventors: 王金钉; 王德贺; 许玉梅; 何湘宁; 龚涛; 吴冕之
Original assignee: Guizhou Power Grid Co Ltd
Current assignee: Guizhou Power Grid Co Ltd
Priority date: 2019-05-06
Filing date: 2019-05-06
Publication date: 2020-02-14
Anticipated expiration: 2029-05-06

Abstract

The utility model discloses a low ground resistance ground structure, include: a ground line; characterized in that, low ground resistance ground structure still includes: burying a ground wire; the buried ground wires are more than two metal rods with exposed surfaces, are buried in the soil layer and are electrically connected with the lower ends of the ground wires, and are mutually connected in parallel. The problems that in the prior art, the grounding resistance is reduced by splashing salt water, so that the grounding resistance is not longer than the standard requirement and the grounding resistance is increased due to easy corrosion of a grounding wire are solved.

Description

Low ground resistance ground structure

Technical Field

The utility model relates to a power equipment field especially relates to a low ground resistance ground structure.

Background

The existing grounding structure, such as a lightning rod, electric equipment and a transformer, is an electric wire buried in a soil layer, and the grounding structure is simple and effective in most cases, but the conductivity of soil is low under certain geological conditions, so that the grounding resistance is greater than the standard requirement and cannot meet the requirement, and the existing method is to pour salt water in the soil layer buried in the grounding wire to reduce the grounding resistance, but the problem of the salt water pouring is that: firstly, the duration is not long, salt can be flushed away along with rainfall, and the grounding resistance is restored to be above the standard requirement after a heavy rain; and secondly, the salt is attached to the grounding wire to generate galvanic reaction, so that the grounding resistance is increased due to the corrosion of the grounding wire.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: a low grounding resistance grounding structure is provided to solve the above problems.

The technical scheme of the utility model is that: a grounding structure with low grounding resistance is disclosed,

the method comprises the following steps:

a ground line;

it is characterized in that the preparation method is characterized in that,

the low ground resistance ground structure further includes:

burying a ground wire;

the buried ground wires are more than two metal rods with exposed surfaces, are buried in the soil layer and are electrically connected with the lower ends of the ground wires, and are mutually connected in parallel.

The buried ground wire further includes:

a conductive stab body;

the conductive stabs are fixedly connected to the surface of the buried ground wire.

And the surface of the grounding wire is covered with a layer of anticorrosive conductive material.

The transformer grounding structure further comprises:

a graphite powder conductor;

the graphite powder electric conductor comprises a graphite powder layer buried in a soil layer;

the buried ground wire is buried in the graphite powder conductor.

The graphite powder conductor also comprises a protective body;

the protective body is a concrete box buried in a soil layer, and the graphite powder layer is arranged in the concrete box.

The surface area of the graphite powder layer is 0.2m²~0.3 m²。

The utility model has the advantages that:

compared with the prior art, the utility model discloses a bury the ground wire with 2 more than in burying the soil layer to be connected the earth connection lower extreme with burying the ground wire, increased the area of contact of earth connection with the soil layer, thereby fall transformer ground resistance below the standard requirement, the utility model discloses can be long-time effectual reduce ground resistance below the standard requirement.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments:

referring to fig. 1, a low ground resistance ground structure,

the method comprises the following steps:

a ground line 2;

it is characterized in that the preparation method is characterized in that,

the low ground resistance ground structure further includes:

a buried ground wire 5;

the buried ground wires 5 comprise more than two, the buried ground wires 5 are metal rods with exposed surfaces, the buried ground wires 5 are buried in the soil layer 4 and are electrically connected with the lower end of the ground wire 2, and the buried ground wires 5 are mutually connected in parallel.

During the use, bury ground wire 5 through with more than 2 and bury in soil layer 4 to be connected 2 lower extremes of earth connection with burying ground wire 5, increased the area of contact of earth connection 2 with the soil layer, thereby fall transformer 1 or other consumer ground resistance below the standard requirement, the utility model discloses can be effectual for a long time reduce ground resistance below the standard requirement.

The buried ground wire 5 further includes:

a conductive stab body 6;

the conductive thorn body 6 is integrally formed or welded on the surface of the buried ground wire 5.

The conductive stabs 6 further increase the contact area of the buried wire 6 and the soil layer 4, and further reduce the grounding resistance.

And a layer of anticorrosive conductive material covers the surface of the grounding wire 2. The anti-corrosion conductive material is equivalent to a grounding wire connected in parallel with the transformer 1 or other electric equipment, and the grounding wire 2 is wrapped by the anti-corrosion conductive material, so that the grounding wire 2 is prevented from being corroded due to the fact that the grounding wire 2 is soaked by rainwater.

The transformer grounding structure further comprises:

a graphite powder electric conductor 3;

the graphite powder electric conductor 3 comprises a graphite powder layer 301 buried in a soil layer 4;

the buried ground wire 5 is buried in the graphite powder conductor 3.

Through burying graphite powder layer 301 in soil layer 4, 2 lower extremes of earth connection are connected with graphite powder layer 301 direct contact, have increased the area of contact of earth connection 2 with soil layer 4 to fall transformer 1 or other consumer ground resistance below the standard requirement, the utility model discloses can be long-time effectual reduce ground resistance below the standard requirement.

The graphite powder electric conductor 3 also comprises a protective body 302;

the protective body 302 is a concrete box buried in the soil layer 4, and the graphite powder layer 301 is arranged in the concrete box.

Through the protective body 302, firstly, the graphite powder layer 301 can be prevented from being washed away by water, and secondly, the fragile graphite powder layer 301 of the powder can be prevented from being damaged by external force.

The surface area of the graphite powder layer 301 is 0.2m²~0.3m²。

The grounding resistance of the transformer 1 or other electric equipment is smaller than the standard requirement, and the graphite powder cannot be wasted due to the excessive volume.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. A grounding structure with low grounding resistance is disclosed,

the method comprises the following steps:

a ground line (2);

it is characterized in that the preparation method is characterized in that,

the low ground resistance ground structure further includes:

a buried ground wire (5);

the buried ground wires (5) comprise more than two metal rods, the surface of each buried ground wire (5) is exposed, the buried ground wires (5) are buried in the soil layer (4) and are electrically connected with the lower end of the ground wire (2), and the buried ground wires (5) are mutually connected in parallel.

2. The low ground resistance ground structure according to claim 1,

the buried ground wire (5) further includes:

a conductive stab body (6);

the conductive thorn body (6) is fixedly connected to the surface of the buried ground wire (5).

3. The low ground resistance ground structure according to claim 1,

and the surface of the grounding wire (2) is covered with a layer of anticorrosive conductive material.

4. The low ground resistance ground structure according to any one of claims 1 to 3,

the low ground resistance ground structure further includes:

a graphite powder conductor (3);

the graphite powder electric conductor (3) comprises a graphite powder layer (301) buried in a soil layer (4);

the buried ground wire (5) is buried in the graphite powder conductor (3).

5. The low ground resistance ground structure according to claim 4,

the graphite powder conductor (3) also comprises a protective body (302);

the protective body (302) is a concrete box buried in the soil layer (4), and the graphite powder layer (301) is arranged in the concrete box.

6. The low ground resistance ground structure according to claim 4,

the surface area of the graphite powder layer (301) is 0.2m²~0.3m²。