Wet type dual-function explosion-proof motor

Abstract

The invention discloses a wet type dual-function explosion-proof motor. A motor shaft (1) penetrates into the motor and is supported by a front bearing and a back bearing, a rotor assembly and an internal water wheel are fixed on the motor shaft (1) inside the motor, and an external water pipeline (13) is arranged in a clearance between a case and a stator assembly. A water inlet (17) of a water distributor (15) and a water outlet (18) of a water collector (16) are mutually communicated through the external water pipeline (13), and a cooling water channel of internal water is formed by splicing the case (2), the external water pipeline (13) and the stator assembly. In the invention, external water is used for cooling heat generated by the motor per se, so that the motor not only can normally work in air environment or explosive gas environment, but also can stably and reliably work for long time in underwater environment. Moreover, the motor can be used together with the traditional multi-stage pump, can be used for reforming the traditional underwater mining draining pump, and thus, the drainage system can resist disasters. Because an adjusting bag is added, the submergence depth of the motor can be greater than the rated head of the water pump.

Description

technical field [0001] The invention relates to a wet dual-function explosion-proof motor which can operate stably and reliably for a long time in the air or explosive gas environment and in the diving environment, and can be combined and connected with common mine drainage pumps. Background technique [0002] At present, the types of electric motors can be roughly divided into two types: dry type and wet type. The dry motor runs in the air for a long time, and its cooling method depends on the rotation of the fan on the motor shaft for forced cooling. If it is in an explosive gas environment, the high temperature and high pressure generated inside the motor can be released to the outside through the explosion-proof gap on the housing. The cooling effect of the explosion-proof surface reduces the temperature below the ignition point of the explosive gas, and will not ignite the explosive gas outside the motor, but the water protection level of this type of motor cannot meet ...

AI Technical Summary

Problems solved by technology

The current underground drainage pump room usually uses the above-mentioned dry motor-driven drainage pump. Once the water inflow exceeds its drainage capacity, the water level will submerge the pump room, and the motor line group will be burned due to a short circuit due to the reduced insulation value, resulting in paralysis of the drainage system.

If the pump room uses a submersible motor-driven drainage pump, since this type of submersible pump generally operates vertically and is installed according to the size of the wellbore, due to the limitation of the water volume of the pump room and the location of the underground space, it is necessary to develop and build a special installation chamber and a special Lifting facilities, excessive investment in foundation, difficult maintenance and repair

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