Heavy-current solid encapsulated pole column and manufacturing method thereof

Abstract

The invention discloses a heavy-current solid encapsulated pole column, and relates to a middle-high voltage switch accessory. The objective of the invention is to solve problems that realization effects of a single heat dissipation method are not ideal and rapid heat dissipation can be achieved only by combining various kinds of methods, particularly to solve a problem that a lower wire outlet seat and a soft conductor for soft connection used for a heavy-current solid encapsulated pole column are like to suffer from thermal oxidation. The pole column comprises a pole column body, a vacuum arc distinguishing chamber arranged in the pole column body, an upper wire outlet conductor, a lower wire outlet conductor and an insulation housing. The vacuum arc distinguishing chamber is arranged in an inner cavity of the insulation housing. The upper wire outlet conductor is connected to the upper part of the vacuum arc distinguishing chamber. The lower wire outlet conductor is connected to the lower part of the vacuum arc distinguishing chamber. At least two chimney-type trapezoid-shaped ventilation air flues are arranged on an outer ring of the vacuum arc distinguishing chamber. The upper ends of the ventilation air flues communicate with the outside, and the lower ends communicate with the interior of the insulation housing. According to the invention, heat dissipation effects are improved; and the soft conductor for soft connection is protected against the thermal oxidation. The invention also discloses a manufacturing method of the heavy-current solid encapsulated pole column.

Description

technical field [0001] The invention relates to a medium and high voltage switchgear accessory, specifically, a high-current solid-sealed pole and a method for using the same. Background technique [0002] In the power system, the solid-sealed pole, as an important part in the switchgear, plays an important role in breaking the short-circuit current and protecting the power grid equipment. The solid-sealed pole is to embed the vacuum interrupter and circuit breaker related conductive parts into the solid insulating material to form a covering, so that the entire circuit breaker pole becomes an integral part. [0003] Among them, the vacuum interrupter is also called vacuum switch tube or vacuum bubble, which is the core device of vacuum switch. It uses a pair of electrodes (contacts) and other parts sealed in a vacuum to realize the closing or breaking of the circuit with the help of the excellent insulation and arc extinguishing performance of the vacuum. After cutting off...

AI Technical Summary

Problems solved by technology

[0009] The existing technology has the following deficiencies. The effect achieved by a single heat dissipation method is not ideal. It is necessary to combine multiple methods to achieve the purpose of rapid heat dissipation. The soft conductor used is extremely prone to thermal oxidation

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