Magnetization, decompression and cooling arc extinction line returning device of coal mine well ventilator electric power case

Abstract

The present invention discloses a magnetization, decompression and cooling arc extinction line returning device of a coal mine well ventilator electric power case. The device comprises a fixed connection groove, a magnetization arc extinction device, a controller and an operation key. The fixed connection groove is inlaid and installed at the left end face of the magnetization arc extinction device. The air bag and a negative pressure cavity form a low pressure to allow an actuation block to be pasted to the surface of the electric power case for isolation from air and avoid that a lot of airpromotes arc recrudescence, the action force of a magnetic patch to arc electrons is employed to allow the arc to be close to an arc-shaped blocking plate gate, because a steel bar gate has a ferromagnetic feature to effectively absorb the arc and allow the arc to be stayed in a slit of an aperture and a laminated barb so as to reduce the arc voltage, a heat conductive pad and a condensation cavity are employed to absorb heat, the deformation of a balance rotation needle is employed to promote transmission of heat, The condensation and liquidation of distilled water in a water storage cavity are performed to consume and release the heat to reduce the arc temperature, prevent electrons from thermal ionization and allow the arc to be extinguished.

Description

technical field [0001] The invention relates to the field of power boxes, more precisely, it relates to a magnetization decompression and cooling arc extinguishing and retreating device for the power box of a coal mine ventilator. Background technique [0002] Because coal mines contain a lot of dust and gas, and these substances are very harmful to the health of the workers, it is necessary to ventilate the mine at all times. Therefore, when the power box of the mine ventilator is withdrawn, it can only be carried out with electricity. Withdrawing from the line, the existing traditional technology is not considered comprehensively, and has the following disadvantages: [0003] Due to the high working voltage of the mine ventilator, if the electric box withdraws the line directly, it is very easy to cause an AC arc at the line withdrawing operation, and the arc is not easy to extinguish under the action of its voltage and air, because the mine contains gas and gas. Dust, un...

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Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a magnetized decompression, cooling, arc-extinguishing and annealing device for the power box of the coal mine ventilator, so as to solve the problem in the prior art that the mine ventilator has a relatively large working voltage and directly When the power box withdraws the line, it is very easy to cause an AC arc at the line withdrawing operation, and the arc is not easy to extinguish under the action of its voltage and air. Because the mine contains gas gas and dust, it is easy to cause a gas explosion under the action of the arc. At the same time, the gas contained in the arc gap of the arc has a high temperature and can conduct electricity, which can accelerate the collision between the surrounding floating dust and cause sparks, resulting in explosions, endangering the safety of workers and equipment.

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