SF6 high-voltage circuit breaker arc extinguish chamber with water removal function

Abstract

The invention discloses an SF6 high-voltage circuit breaker arc extinguish chamber with a water removal function, and belongs to the technical field of high-voltage SF6 circuit breakers. The arc extinguish chamber comprises an arc extinguish chamber shell (13), a static contact mechanism (5) and an inner base (17) are arranged in the arc extinguish chamber shell (13), a moving contact mechanism isarranged in the middle of an inner cavity of the arc extinguish chamber shell (13), and the arc extinguish chamber is characterized in that an arc extinguish chamber suction box (1) and a bottom heating wire (19) are arranged at the top and the bottom of the inner cavity of the arc extinguish chamber shell (13); an insulating pull rod (10) is of a hollow structure; an insulating pull rod closing-up opening (12) is formed in an inner cavity of the insulating pull rod (10), and a pull rod suction barrel (14) is further arranged at the bottom of the insulating pull rod closing-up opening (12). According to the invention, water vapor in the arc extinguish chamber can be removed; the insulating pull rod closing-up opening and the pull rod suction barrel are arranged in the insulating pull rod,so that water vapor generated in high-temperature gas during arc extinguish can be isolated and sucked.

Description

technical field [0001] A SF with water removal function 6 High-voltage circuit breaker arc extinguishing chamber, which belongs to high-voltage SF 6 Circuit breaker technology field. Background technique [0002] High-voltage circuit breakers are the most complex and important electrical appliances in high-voltage equipment. They can realize the dual functions of control and protection, and are widely used in power plants, substations, switching stations and power lines in power systems. High pressure SF 6 The circuit breaker is made with SF 6 Gas as an arc extinguishing and insulating medium for circuit breakers. Thanks to SF 6 The gas has excellent arc extinguishing and insulation properties, as well as high fracture voltage, strong breaking capacity, allowing many times of continuous breaking short-circuit current, suitable for frequent operation, breaking capacitive current without re-ignition or re-ignition, breaking Inductive current can have many advantages such...

AI Technical Summary

Problems solved by technology

High-voltage circuit breakers are relatively important key components in the power grid. Dehumidification and delayed start-up time will inevitably cause certain economic losses, but the normal operation of high-voltage circuit breakers cannot be guaranteed without regular dehumidification.

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