Anti-explosive method of electric welder

Abstract

The invention relates to an anti-explosive method of an electric welder, which is suitable for welding large machinery equipment on working surfaces in coal mine underground excavation. The electric welder, a contactor and other electrical equipment are arranged in an explosion-isolation outer casing to isolate explosion, a high-pressure water pump and a water tank are arranged in an outer casingwithout explosion isolation, and a protection control circuit is arranged in the explosion-isolation outer casing. The protection control circuit comprises the gas locking protection of anti-explosive electric welding handle clippers, flow locking protection, water pressure locking protection and electric welder over-current protection. The ends of the anti-explosive electric welding holder clippers are provided with clamping mechanisms for clamping electrodes, and are also provided with a plurality of spray nozzles. During welding, a high-pressure water curtain is sprayed out of the spray nozzles, and the arc light generated by electric welding is sealed by the water curtain.

Description

technical field [0001] The invention relates to an explosion-proof method for an electric welding machine, which is suitable for welding large-scale mechanical equipment on the mining working face of underground coal mines. technical background [0002] At present, if the large-scale mechanical equipment used in the underground mining face of coal mines is damaged, it is difficult to transport it to the ground for maintenance, and it takes a long time and man-hours, which affects production and brings great economic losses. Generally, it is repaired underground , Even in underground electric welding, open flame electric welding in underground is likely to cause coal dust gas explosion accidents. Although it is generally approved by the chief engineer of the mine and some management measures are taken, there is no reliable technical guarantee, which will pose a threat to the life safety of miners. Contents of the invention [0003] The purpose of the present invention is to...

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Problems solved by technology

[0004] In order to achieve the above object, the present invention will solve the following problems: the one is to solve the problem that electrical sparks are easily generated by electrical equipment under normal working conditions and fault conditions; It is to solve the problem of poor contact or disconnection of the wires during the welding process, which is easy to generate electric sparks

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