Switching-on and switching-off structure of outdoor high-voltage vacuum circuit breaker

Abstract

The invention discloses a switching-on and switching-off structure of an outdoor high-voltage vacuum circuit breaker. The switching-on and switching-off structure comprises: a box body; a supporting plate which is fixedly connected between the two sides of the inner wall of the box body, wherein the top of the supporting plate is fixedly connected with a switching-on and switching-off body, and the top of the switching-on and switching-off body is provided with a plurality of solid-sealed polar poles. According to the switching-on and switching-off structure of the outdoor high-voltage vacuumcircuit breaker, a power supply of the electromagnet is switched on, the electromagnet generates repulsive acting force on the permanent magnet, further, the cover plate indirectly moves towards one side far away from the fixed frame, a ventilation opening is in the open state, and the two fans are started to drive air flow in the box body to flow, so that high-temperature air or moisture in the box body is brought out of the box body, the effect of cooling or dehumidifying the interior of the box body is achieved, and the situation that normal work of the switching-on and switching-off body is affected due to the fact that the temperature in the box body is too high or the moisture is heavy is avoided.

Description

technical field [0001] The invention specifically relates to an opening and closing structure of an outdoor high-voltage vacuum circuit breaker. Background technique [0002] "Vacuum circuit breaker" is named because the arc extinguishing medium and the insulating medium of the contact gap after arc extinguishing are high vacuum; it has the advantages of small size, light weight, suitable for frequent operation, and no maintenance for arc extinguishing. It is widely used in power grid. Vacuum circuit breaker is an indoor power distribution device in 3-10kV, 50Hz three-phase AC system, which can be used for protection and control of electrical equipment in industrial and mining enterprises, power plants, and substations, especially suitable for oil-free, less Places for maintenance and frequent operations. [0003] When the existing vacuum circuit breakers are used outdoors, most of them are installed inside the central cabinet. However, the existing central cabinet will ma...

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Problems solved by technology

[0003] When the existing vacuum circuit breakers are used outdoors, most of them are installed inside the central cabinet. However, the existing central cabinet will make the internal humidity heavy in rainy days, which will affect the performance of the circuit breaker and even damage the The equipment inside the central cabinet is short-circuited, and the existing central cabinet will have cooling holes for heat dissipation. However, the setting of the cooling holes will cause dust to enter from the cooling holes when the central cabinet does not need heat dissipation, which will cause the inside of the central cabinet to The accumulation of dust will affect the working efficiency of internal equipment

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