Dual-grounding device applied to transformer station guardrail

Abstract

The present invention discloses a dual-grounding device applied to a transformer station guardrail. The device comprises a U-shaped grounding block arranged at the lower end of the guardrail, and the surface, opposite to the guardrail, of the grounding block is provided with grounding wires. The upper end of the grounding wires is fixedly connected with the grounding block through connection bolts and lock nuts, and the connection bolts pass through the guardrail and then are connected with a grounding pole arranged in the guardrail. The lower ends of the grounding pole and the grounding wires are connected with a grounding grid, the upper end of the grounding pole is provided with an upper location boss, and the upper location boss is provided with a spring pin. The middle portion o the grounding pole is provided with a lower location boss which is matched with an annular boss arranged at the lower end of the guardrail, and a jack is arranged between the upper location boss and the lower location boss. A shielding cover is arranged at the external portion, located at the grounding block, of the guardrail. The dual-grounding device applied to the transformer station guardrail employs the double grounding wires to greatly improve the grounding reliability.

Description

technical field [0001] The invention relates to a grounding device, in particular to a double grounding device applied to the guardrail of a substation. Background technique [0002] At present, in the construction process of substation projects, when construction workers ground the stainless steel guardrail handrails, the general method is to weld stainless steel bolts on the steel pipe, and then connect the bolts with soft wires and then connect to the main grounding grid. This method mainly has the following disadvantages: [0003] First, not only the effective section of the grounding connection cannot be reached, but also the bolts are prone to loosening and the grounding effect is poor during long-term use. [0004] Second, because the connection of the ground wire is exposed to the air for a long time, it will be corroded for a long time, and then there will be a series of problems such as looseness and unreliable contact, which will affect the effect of grounding. ...

AI Technical Summary

Problems solved by technology

[0003] First, not only the effective cross-section of the grounding connection cannot be reached, but also the bolts are prone to loosening and the grounding effect is poor during long-term use.

[0004] Second, because the connection of the grounding wire is exposed to the air for a long time, it will be corroded for a long time, and then there will be a series of problems such as looseness and unreliable contact, which will affect the effect of grounding

[0005] Third, only single-wire grounding is used. Once the grounding wire is poorly grounded, there is a high risk of electric shock, and the consequences of electric shock are irreversible.

Images