An insulating device for the installation port of the grounding wire

Abstract

The invention discloses a grounding line mounting opening insulation device, and relates to electric power system insulation. The grounding line mounting opening insulation device is a grounding line mounting opening insulation box device applied to maintaining aluminum (copper) row type outgoing lines of medium and large power distribution transformers of electric power systems, and the medium and large power distribution transformers are mounted under high-voltage conditions in outdoor environments. The grounding line mounting opening insulation device comprises a left opening box and a right opening box. The left opening box and the right opening box comprise box bodies in the shapes of half frames, openings are formed in the side surfaces of the box bodies, and the left opening box and the right opening box are oppositely staggered and nested in each other in an overlaid manner via the openings in the side surfaces of the box bodies to form an insulation box, and are fixed to each other by screws; a rolling shaft which is parallel to an upper plane of the insulation box is arranged on the inner upper portion of the insulation box and is connected with two side walls of the insulation box; a rolling shaft support frame is arranged at two ends of the rolling shaft; connecting shafts are arranged on the lower portion of the rolling shaft support frame, and pressure springs sleeve the connecting shafts; the lower portions of the connecting shafts penetrate the bottom of the insulation box to be connected with an operation butting barrel and are constrained by stop nuts; the upper ends of the pressure springs are butted onto the rolling shaft support frame, and the lower ends of the pressure springs are butted to the inner bottom of the insulation box.

Description

technical field [0001] The invention relates to an insulating device for the installation port of a grounding wire, which relates to the insulation of a power system. Cover the insulation of the special hanging ground wire fixed point for transformer maintenance. Background technique [0002] At present, the outdoor main transformer of the power system is limited by the volume, and the outgoing wires mostly use relatively fixed hard copper or aluminum bars as the outgoing wires. Due to the compact design, the safety distance between the phases is designed to be relatively small. In order to prevent phase-to-phase short circuit caused by falling objects, countermeasures in the industry require that the outgoing copper (aluminum) row be sealed with an insulating heat-shrinkable rubber sheath. Requirements for hanging wires for maintenance of main transformer: The closed copper (aluminum) must be opened with a hole of about 10cm for hanging the grounding wire. However, this i...

AI Technical Summary

Problems solved by technology

This brings great difficulty to the installation of the grounding wire. When installing the grounding wire, use an insulating rod or an insulating operating rod to move the insulating cover of the grounding port to one side, because the gap between the rubber cover and the copper bar is not large (it is too large and easy to shift. Not in the opening position) In addition, the friction coefficient between the rubber and the rubber sleeve heat-shrinked on the copper bar is particularly large, so it is very difficult to move, and it is difficult to restore the ground wire after it is removed

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