Cyclone energy separation type high voltage sf6 circuit breaker and its energy separation method

Abstract

The invention belongs to the field of high-voltage SF6 circuit breakers, and in particular relates to a cyclone energy-separated high-voltage SF6 circuit breaker and its energy separation method, which includes a piston (1), a cylinder (2), a moving main contact (3), a moving arc Contact (4), static arc contact (5), static main contact (6) and spout (7); upstream of the spout (7), a vortex is fixed near the end of the moving arc contact (4). The swirl guide mechanism (8); the vortex guide mechanism (8) is composed of a group of guide vane units (9) adopting a cross structure; the vortex guide mechanism (8) can also be composed of a fan-type guide vane ( 16) or spiral guide vanes (21) constitute. The invention makes the SF6 gas flowing out of the compressed air cylinder perform a vortex motion, forming a temperature gradient change along the radial direction during the motion process, the arc energy dissipates rapidly, the arc temperature drops quickly, the insulation performance is good, and the breaking capacity is strong. Easy installation and maintenance, high operating reliability.

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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