CN102904080A - A direct-clamp fastening type grounding wire for a substation rod - Google Patents

Abstract

The invention relates to a power transformation screw rod vertical clamping fixed type ground wire connected with an equipment electric row. The ground wire comprises a screw rod, a U-shaped main body, a binding clip, a wiring nose and a earthed conductor, wherein the screw rod is successively connected with the U-shaped main body and the binding clip, one end of the wiring nose is connected with the U-type main body, the other end of the wiring nose is connected with the earthed conductor, and the binding clip is connected with the equipment electric row. Compared with the prior art, the power transformation screw rod vertical clamping fixed type ground wire provided by the invention has the advantages that the power transformation screw rod vertical clamping fixed type ground wire is safe and reliable, the operation is convenient and the like.

Description

A direct-clamp fastening type grounding wire for a substation rod

technical field

The invention relates to a grounding wire for a power station, in particular to a grounding wire with a direct clamping and fastening type of a substation rod.

Background technique

When there are a large number of user equipment in substations and distribution stations, the grounding wire clamps used are not suitable for the grid spacing or do not meet the power safety regulations or the grounding wire standards promulgated by the power grid company. In actual use, other alternative chucks that fail to meet safety requirements and standards have been used in violation of regulations for a long time on the lateral electric row, causing potential safety hazards.

In operation, due to the position and lateral orientation of the electric row, the original grounding wire clamps are mostly operated at right angles in various voltage level substation positions, which is difficult to install, resulting in insufficient grounding distance. Among the existing various grounding wires, the fastening chucks of the rods are all right-angled, and the operating handle is operated horizontally, which is not suitable for the grounding operation of existing power transformation and distribution equipment. At present, there are spring straight clamps in China, and the sizes of the grounding openings are different, resulting in that the conductor cross section of the contact surface of the clamping part cannot meet the grounding requirements.

Contents of the invention

The object of the present invention is to provide a safe, reliable, and easy-to-operate grounding wire for direct clamping and fastening of the substation rod in order to overcome the above-mentioned defects in the prior art.

The purpose of the present invention can be achieved through the following technical solutions:

A substation rod directly clamping and fastening type grounding wire, which is connected to the equipment electric bar, the grounding wire includes a rod, a U-shaped body, a clamp head, a connecting nose and a grounding wire, and the rods are connected to the U Character body and pliers head, one end of the wiring nose is connected to the U-shaped body, the other end is connected to the grounding wire, and the pliers head is connected to the equipment power bank.

One end of the shank is provided with a thread, and the shank is connected to the U-shaped main body through the thread, and the other end of the shank is covered with an insulating sleeve.

One end of the wiring lug is a hollow cylinder whose diameter matches that of the grounding wire, and the other end of the wiring lug is fixed on the U-shaped main body by fixing bolts.

The end of the clamp head connected to the U-shaped main body is provided with an expansion spring and a triangular slider. The triangular slider is arranged in the U-shaped main body, and the clamp head and the expansion spring are fixed on the On the main body of U letter.

The maximum opening of the pliers is 30mm.

The material of the wiring lug is copper.

The material of the pliers is aluminum.

The tightening torque of the pliers head is 14-28.

Compared with the prior art, the present invention has the following advantages:

1) Safe and reliable: the present invention adopts aluminum pliers, and the contact section with the equipment electric row is not less than the specified value, has a reliable contact surface and can withstand the thermal stress and mechanical stress generated by the rated fault current, and the contact is good, greatly Improved safety, which is of great significance to personal and equipment safety;

2) Easy to operate: the present invention can easily install the fastened grounding wire on the electric bar, which not only solves the position grounding problem of various substation and distribution equipment, but also can be used at any voltage level. The grounding wire can be used on the side electric row equipment, and it can also be operated from the grounding operation on the 10 kV cable entry pole.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a schematic exploded view of the structure of the present invention.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Fig. 1-Fig. 2, a direct-clamp fastening type grounding wire of a substation rod is connected with the equipment row. Nose 4 and ground wire 5. One end of the rod 1 is provided with a thread, and the rod 1 is connected to the U-shaped main body 2 through the thread, and the other end of the rod 1 is covered with an insulating sleeve 10 .

One end of the clamp head 3 is connected to the U-shaped main body 2, and the other end is clamped on the equipment electric row. One end of the clamp head 3 connected to the U-shaped main body 2 is provided with an expansion spring 7 and a triangle slider 8. The triangle The slider 8 is arranged in the U-shaped main body 2 , and the clamp head 3 and the expansion spring 7 are fixed on the U-shaped main body 2 through two fixing pins 8 . The material of the pliers is aluminum, and the maximum opening of the pliers can reach 30mm, which can meet the thickness of the equipment row. The contact area between the clamp head and the electric row of the equipment is (30*50)*2=3000mm ² , not less than the specified value. The tightening torque of the clamp head is 14-28.

One end of the wiring copper nose 4 is a hollow cylinder whose diameter matches the diameter of the grounding wire 5, and the wiring copper nose is connected to the grounding wire 5 through the hollow cylinder; the other end of the wiring copper nose 4 is fixed on the U On the main body of the word 2. The contact section between the wiring copper lug and the connection point of the grounding wire shall not be less than 25mm ² .

A plurality of substation rods can be used in combination, and can be easily installed on the electric bar of the equipment. The surface area and shape of the clamp head and the electric bar match to achieve good contact effect and high reliability. Personal and equipment safety is of great significance.

Claims (8)

1. straight and-clamping fastening earth connection of power transformation sieve bar, row is connected with the equipment electricity, it is characterized in that, described earth connection comprises sieve bar, U word main body, binding clip, wiring nose and earth lead, described sieve bar connects U word main body and binding clip successively, described wiring nose one end is connected with U word main body, and the other end is connected with earth lead, and described binding clip is connected with equipment electricity row.

2. the straight and-clamping fastening earth connection of a kind of power transformation sieve bar according to claim 1 is characterized in that, an end of described sieve bar is provided with screw thread, and described sieve bar is connected with U word main body by this screw thread, and the other end of described sieve bar is arranged with insulating case.

3. the straight and-clamping fastening earth connection of a kind of power transformation sieve bar according to claim 1, it is characterized in that, one end of described wiring nose is the hollow cylinder that the diameter of diameter and earth lead is complementary, and the other end of wiring nose is fixed on the U word main body by set bolt.

4. the straight and-clamping fastening earth connection of a kind of power transformation sieve bar according to claim 1, it is characterized in that, described binding clip is provided with rise spring and cam block with the end that U word main body is connected, described cam block is arranged in the U word main body, and described binding clip is fixed on the U word main body by two steady pins jointly with the spring that rises.

5. the straight and-clamping fastening earth connection of a kind of power transformation sieve bar according to claim 1 is characterized in that, the maximum opening of described binding clip is 30mm.

6. the straight and-clamping fastening earth connection of a kind of power transformation sieve bar according to claim 1 is characterized in that, the making material of described wiring nose is copper.

7. the straight and-clamping fastening earth connection of a kind of power transformation sieve bar according to claim 1 is characterized in that, the making material of described binding clip is aluminium.

8. the straight and-clamping fastening earth connection of a kind of power transformation sieve bar according to claim 1 is characterized in that, the Tightening moment of described binding clip is 14-28.

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