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Protection device for grounding wire

A technology for protection devices and grounding wires, which is applied in the direction of connection, conductive connection, electrical components, etc., and can solve the problems of shortened service life of the grounding wire, damage and fall of the insulating sheath, and broken strands of internal copper wires, etc.

Pending Publication Date: 2020-10-30
STATE GRID CORP OF CHINA +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, after the grounding wire is installed, since the distance between the three-phase lines is about 50 cm, the connection between the three-strand wire and one wire of the grounding wire will be pulled, and the insulation sheath will be damaged and fall off, or even the internal copper wire will be broken. The situation will lead to a sharp shortening of the service life of the grounding wire. If it is not discovered in time, there will even be a great potential safety hazard.

Method used

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  • Protection device for grounding wire
  • Protection device for grounding wire
  • Protection device for grounding wire

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Embodiment Construction

[0032] For ease of understanding, combined here Figure 1-4 , the concrete structure and working mode of the present invention are further described as follows:

[0033] The specific structure of the present invention is as Figure 1-4 As shown, the main part includes an insulating bottom box 10 and an insulating and sealed box cover 20, as shown in figure 1 and image 3 In the shown embodiment, both the insulating bottom box 10 and the insulating and sealing box cover 20 are made of insulating plastic, and they are fixedly connected to each other through screw fit, so as to form a semi-hermetic closed cavity structure at the box cavity. in;

[0034] The shape of the insulating bottom box 10 is as follows Figure 1-3 The shown column box shape, and the coaxial protrusion of the box cavity of the insulating bottom box 10 is provided with a positioning convex ring 11 . in such as Figure 2-3 In the shown embodiment, there are four sets of positioning members 30 so as to co...

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Abstract

The invention belongs to the technical field of grounding protection and particularly relates to a protection device for a grounding wire. The device comprises an insulating bottom box, an insulatingsealing box cover and positioning pieces, a positioning convex ring or a positioning convex column is arranged in the insulating bottom box, the positioning pieces comprises L-shaped plate-shaped positioning plates, and a positioning hoop is matched with a sliding rail on a horizontal plate section; the positioning pieces further comprise compression springs; a positioning ring is arranged at thehead end of the horizontal plate section and coaxially arranged on the positioning convex ring or the positioning convex column in a sleeving manner; the positioning rings of the positioning pieces have a height difference on the positioning convex ring or the positioning convex column so as to avoid each other in the mounting space; the box wall of the insulating bottom box is concavely providedwith an avoidance groove used for avoiding and guiding a grounding wire installation path. According to the invention, the safety protection function of the connection part of three strands of wires and one strand of wire of the grounding wire can be realized, and the pulling phenomenon at the connection part can be synchronously avoided, so that the service life of the grounding wire is ensured to meet the requirements of a user.

Description

technical field [0001] The invention belongs to the technical field of grounding protection, and in particular relates to a protection device for grounding wires. Background technique [0002] In the power system outage maintenance operation, the grounding wire must be installed after the power inspection operation is completed. The grounding method commonly used at present is: the grounding end of the grounding wire is grounded with one wire, and the conductor end of the grounding wire is three wires so as to be connected with the three-phase line respectively. Therefore, after the grounding wire is installed, since the distance between the three-phase lines is about 50 cm, the connection between the three-strand wire and one wire of the grounding wire will be pulled, and the insulation sheath will be damaged and fall off, or even the internal copper wire will be broken. The situation will lead to a sharp shortening of the service life of the grounding wire. If it is not d...

Claims

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Application Information

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IPC IPC(8): H01R9/24
CPCH01R9/2416H01R9/2483
Inventor 王远飞陈桂祥刘张李元武吴萍钱华龙章义恩
Owner STATE GRID CORP OF CHINA
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