Normal-pressure sealed air-insulated circuit breaker

Abstract

The invention discloses a normal-pressure sealed air-insulated circuit breaker. The device comprises a sealing shell, a driving shaft, a driven shaft, a flashboard, circuit breaking modules, a packaging plate, a partition plate, a pull rod, a transmission plate, a crankshaft, a motor, a curved ring, a driving gear, a driven gear, a concentric gear, a transmission gear, a rotating shaft, a drivinggear and a linkage gear. The driving shaft and the driven shaft are rotationally mounted on one side of the sealing shell. Three circuit breaking modules are mounted on the outer wall of the drivingshaft. Three gate plates are correspondingly mounted on the outer wall of the driven shaft. The partition plate is fixed in the sealing shell. The packaging plate is mounted at the top of the partition plate. The driving shaft penetrates into the inner side of the packaging plate and provided with a curved ring. The curved ring is in linkage with the transmission plate. A transmission part is packaged through the sealing shell, so that the sealing protection effect is achieved, the safety is improved, the size is small, and the occupied space is reduced. The device is stable and sensitive in driving, rapid opening and closing can be achieved, and the using performance is improved.

Description

technical field [0001] The invention relates to the technical field of circuit breakers, in particular to a normal-pressure sealed air-insulated circuit breaker. Background technique [0002] With the rapid development of my country's urban construction, the requirements for power grids are getting higher and higher. A large number of ring network power supply schemes are used in the 12kV power system, and users can obtain power from two directions to improve the reliability and safety of power supply. Since the 1990s, my country has introduced a foreign 12kV medium voltage switchgear, namely SF6 ring network cabinet. This is a gas insulated switchgear, which is widely used due to its small size, compact structure, convenient installation, simple maintenance, safety and reliability. The SF6 ring network cabinet is a switch cabinet with sulfur hexafluoride (SF6) gas as the insulating medium. The load switch, vacuum interrupter and main conductive circuit are installed in a ...

AI Technical Summary

Problems solved by technology

[0003] Around 2010, domestic manufacturers developed a solid-insulated ring network cabinet to replace the SF6 ring network cabinet. The circuit breaker in the ring network cabinet undertakes the basic functions of breaking short-circuit current, breaking rated current, and connecting and disconnecting lines. The current circuit breaker has a large structure, takes up more space, and the switching stability of the circuit breaker is poor

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