Circuit breaker assembly

Abstract

The invention discloses a circuit breaker assembly, which comprises a vacuum bubble, a double-ended screw, an insulating pull rod, an aluminum clamping element and insulating rods, wherein the outer end of a vacuum bubble static conductive rod is fixedly connected with a vacuum bubble static end copper member, and the outer end of a vacuum bubble moving conductive rod is slidably connected with avacuum bubble moving end copper member; the outer end of the vacuum bubble moving conductive rod is connected with one end of the insulating pull rod through the double-ended screw, and the other endof the insulating pull rod is connected with a circuit breaker operating mechanism; the vacuum bubble static end copper member and the vacuum bubble moving end copper member are respectively clamped by the aluminum clamping element; the aluminum clamping element is arranged in a left-right symmetrical manner, and the upper and lower ends of the aluminum clamping element are respectively provided with bolt holes; four insulating rods are arranged in parallel along the length direction of the vacuum bubble; the insulating rods are provided with bolts holes at positions corresponding to the boltholes on the aluminum clamping element; and the rear end of each insulating rod is connected and fixed with the aluminum clamping element and the vacuum bubble static end copper member through a boltand nut, and the middle part of each insulating rod is connected and fixed with the aluminum clamping element and the vacuum bubble moving end copper member through a bolt and nut.

Description

technical field [0001] The invention belongs to the technical field of power system transmission and distribution equipment manufacturing, and in particular relates to a circuit breaker assembly. Background technique [0002] With the rapid development of power equipment, there are no oil-less circuit breakers in operation in the current medium-voltage field (10KV~35KV voltage level). It was replaced by vacuum circuit breakers. The development of vacuum circuit breakers originated from the development of Siemens' vacuum technology in 1972. In the following 40 years, vacuum circuit breakers have achieved rapid development and also driven related industries. [0003] In recent years, due to the rapid appreciation of land prices, especially the real estate industry requires the area of ​​substations to be smaller and smaller, and at the same time requires the power equipment to be smaller and smaller. This has given birth to the technology of embedded poles. With the applicati...

AI Technical Summary

Problems solved by technology

Will cause permanent damage to the external insulation, leaving a safety hazard

[0005] 2. Since the back of the arc extinguishing chamber is completely sealed, if the current of the circuit breaker is relatively large, the heat dissipation will be affected

At present, products with solid-sealed poles are hardly used in the field of high current. The main reason is that the heat dissipation cannot meet the requirements.

[0006] 3. If there is a quality problem in the vacuum interrupter, the pole needs to be replaced as a whole

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