Remote-end auxiliary heating device of SF6 circuit breaker

Abstract

The invention provides a remote-end auxiliary heating device of an SF6 circuit breaker. The device can settle a problem of incapability of effectively increasing temperature of air in a remote-end air chamber of a circuit breaker pole after a heater is added on the bottom of the circuit breaker. The remote-end auxiliary heating device is mounted at top of the circuit breaker. The remote-end auxiliary heating device is composed of a heat-insulating sleeve, resistor belts which are embedded into the inner wall of the heat-insulating sleeve, and an induction power generator device which is mounted on a high-voltage bus. The top inner wall of the pole is provided with a recessed trough in which the heating resistor belt is fixed. The remote-end auxiliary heating device of the SF6 circuit breaker has advantages of convenient mounting and high product performance.

Description

technical field [0001] The invention relates to a remote auxiliary heating device of an SF6 circuit breaker. Background technique [0002] The climate in eastern Inner Mongolia is cold, and the lowest temperature in some areas can reach -40°C in winter, and even -50°C in some areas. In the case of extreme low temperature, the partial liquefaction of SF6 gas will reduce the density of SF6 gas in the SF6 circuit breaker, and the excellent electrical properties of SF6 gas are realized under certain pressure and density conditions, so the temperature is too low will cause SF6 gas to appear The liquefaction phenomenon reduces the breaking performance and insulation capacity of the SF6 circuit breaker. [0003] In order to ensure the safe and reliable operation of SF6 circuit breakers in alpine regions, many scholars and manufacturers at home and abroad have done relevant tests. At present, the more common methods include: reducing the operating pressure of SF6 gas; using other g...

AI Technical Summary

Problems solved by technology

At the same time, the current existing heating methods generally directly heat the tank body of the circuit breaker and the bottom of the porcelain column. Although this heating method is simple and feasible, it is difficult to The heat cannot be conducted to the SF6 arc extinguishing gas chamber, and this method cannot effectively increase the gas temperature in the SF6 arc extinguishing gas chamber in the alpine region

Therefore, on the premise of installing a heating device at the bottom, the self-powered heating device can be installed at the far end of the circuit breaker, in order to solve the problem that the temperature at the remote end of the SF6 circuit breaker cannot be effectively improved

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