Gas rotation energy separation type high-voltage SF6 circuit breaker and energy separation method thereof

Abstract

The invention belongs to the field of high-voltage SF6 circuit breakers, in particular to a gas rotation energy separation type high-voltage SF6 circuit breaker and an energy separation method thereof. The circuit breaker comprises a piston (1), an air cylinder (2), a movable main contact (3), a movable arcing contact (4), a static arcing contact (5), a static main contact (6) and a nozzle (7), wherein a vortex diversion mechanism (8) is fixedly arranged near the end part of the movable arcing contact (4) on the upstream of the nozzle (7), consists of a group of flow deflector units (9) with intersected structures and can consist of a fan blade type flow deflector (16) or a screw type flow deflector (21). By the circuit breaker and the method, SF6 gas which flows out of the air cylinder is subjected to vortex motion, temperature gradient variation along the radial direction is formed in the motion process, and arc energy is quickly dissipated; and the circuit breaker has a high arc temperature reduction speed, a high insulating property, high breaking capacity and high operation reliability and is convenient to mount and maintain.

Description

technical field [0001] The invention belongs to high pressure SF 6 In the field of circuit breakers, it particularly relates to a cyclone energy separation type high-pressure SF that redesigns the structure of the nozzle flow path area. 6 A circuit breaker and its energy separation method. Background technique [0002] In the power system, high-voltage switchgear plays the role of control and protection. High-voltage circuit breakers are the most important electrical equipment, mainly used for closing and breaking circuits. With the rapid development of my country's electric power industry, the operating performance and quality requirements of electrical products are getting higher and higher. As the leading product of high-voltage switches, high-voltage SF6 circuit breakers play an important role in the control and protection of high-voltage, ultra-high voltage and ultra-high voltage transmission systems. effect. [0003] Compressed air SF 6 There are basically...

AI Technical Summary

Problems solved by technology

The single-pressure circuit breaker is simple in structure, low in cost, and widely used. However, if you want to increase the breaking capacity of the circuit breaker, the traditional arc blowing method (generally axial flow arc blowing method) has great difficulties, which is not conducive to large-scale The ability to resist electric field breakdown between contacts can be greatly improved, and the current circuit breaker nozzle flow path structure only uses SF 6 gas to blow the arc

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