A circuit breaker auxiliary device

Abstract

The invention discloses a novel breaker assisting device. The novel breaker assisting device comprises a terminal box body and is characterized in that box doors are mounted on two sides of the outside of the terminal box body, a gas circuit mounting chamber and a circuit mounting chamber are arranged inside the terminal box body through a partition, a gas storage bottle, a recycling bottle and acompressor are mounted inside the gas circuit mounting chamber, a first pressure gauge is mounted at the upper end of each of the gas storage bottle and the recycling bottle, a main gas guide pipe ismounted at the port of the gas storage bottle, a pressure reducing valve is mounted at one end, close to the gas storage bottle, of the main gas guide pipe, an automatic gas supplementing loop and a normal gas supplementing loop are mounted at the other end of the main gas guide pipe through a tee joint, an electromagnetic valve, a second pressure gauge and a first needle valve switch are mountedon each of the automatic gas supplementing loop and the normal gas supplementing loop, the compressor is mounted on one side of the recycling bottle, and the gas output end of the compressor is connected with the recycling bottle. The novel breaker assisting device has the advantages that gas supplementing can be conveniently, fast and effectively performed on a breaker, and a gas recycling function is achieved through the compressor.

Description

technical field [0001] The invention relates to the field of electrical equipment, in particular to an auxiliary device for a circuit breaker. Background technique [0002] A circuit breaker refers to a switching device that can close, carry and break current under normal circuit conditions and can close, carry and break current under abnormal circuit conditions within a specified time. The normal operating temperature of the existing switches is around plus or minus 35°C, but Xilin Gol and the areas to the north are at higher altitudes, and the lowest temperature in winter can drop to -40°C, resulting in the liquefaction of SF6 gas at low temperatures, which affects the normal operation of the switch. The arc extinguishing ability of the main arc extinguishing medium decreases, and it usually needs to replenish air to restore normal operation. Due to the large temperature difference between day and night, after the temperature rises, SF6 will change from liquid to gas, whic...

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Problems solved by technology

[0003] Moreover, the existing SF6 automatic gas supply device only completes the automatic gas supply start-stop function through external additional equipment, and does not have the automatic exhaust function and recycling function, and the temperature is not controlled in the gas supply device as a whole, resulting in the storage The pressure of the gas cylinder has a greater influence

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