Solid-sealed polar pole used for 35kV gas-insulated switchgear circuit breaker

Abstract

The invention discloses a solid-sealed polar pole used for a 35kV gas-insulated switchgear circuit breaker. The solid-sealed polar pole comprises a vacuum bubble, the left end of the vacuum bubble is connected with a movable conductor, and the right end of the vacuum bubble is connected with a static conductor. The left end of the movable conductor is provided with a vacuum bubble pull rod, a spring contact finger is arranged in the movable conductor, and the spring contact finger is connected with the vacuum bubble pull rod. The vacuum bubble pull rod, the movable conductor, the vacuum bubble and the static conductor are poured into a whole through epoxy resin, the epoxy resin is poured to form a solid-sealed polar pole shell, and multiple circles of threaded skirt edges are arranged on the surface of the solid-sealed polar pole shell; a mounting surface matched with a circuit breaker mounting plate is arranged at the left end of the solid-sealed polar pole shell, a static conductor baffle is arranged at the right end of the solid-sealed polar pole shell and comprises two rectangular pieces, and the two rectangular pieces are arranged at the two sides of the static conductor respectively; a binding post is arranged above the movable conductor, one end of the binding post is connected with the movable conductor, the other end of the binding post penetrates through the surface of the solid-sealed polar pole shell, and the two sides of the binding post are provided with movable conductor baffle plates.

Description

technical field [0001] The invention relates to a solid-sealed pole used in a 35kV inflatable cabinet circuit breaker. Background technique [0002] In the field of medium and high voltage electrical appliances, vacuum circuit breakers are electrical equipment used to control and protect power systems, and the solid-sealed poles including vacuum interrupters are the core components of vacuum circuit breakers. The existing solid-sealed poles are generally composed of insulating pull rods, soft connectors, lower outlet terminals, interrupter components, epoxy resin shells, and upper outlet terminals. The upper outlet terminals of the solid-sealed pole and the upper outlet terminals of the vacuum interrupter The rods are fixed and connected by screws. This kind of solid-sealed pole has the following problems: because the outgoing terminal on the solid-sealed pole and the outgoing rod on the vacuum interrupter are connected by screws, there are unevenness between the connecting ...

AI Technical Summary

Problems solved by technology

The existing solid-sealed poles are generally composed of insulating pull rods, soft connectors, lower outlet terminals, interrupter components, epoxy resin shells, and upper outlet terminals. The upper outlet terminals of the solid-sealed pole and the upper outlet terminals of the vacuum interrupter The rods are fixed and connected by screws. This kind of solid-sealed pole has the following problems: because the outgoing terminal on the solid-sealed pole and the outgoing rod on the vacuum interrupter are connected by screws, there are unevenness between the connecting parts of the two conductors. There are some gaps, and there is a complex electric field in the connecting part of the conductor during operation, and the distribution is uneven, which affects the overall insulation ability of the solid-sealed pole

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