Downdraft high-voltage electric diving pump used for explosion-proof type mines and wells

Abstract

The invention relates to a high-voltage electric diving pump, in particular to a downdraft high-voltage electric diving pump used for explosion-proof type mines and wells, which comprises a single-suction guide vane type centrifugal pump and a water-filled explosion-proof type high-voltage three-phase asynchronous motor. The downdraft high-voltage electric diving pump is characterized in that the formation component of a protective layer of an inner cavity of the motor comprises a leading-out cable assembly, the back part is sequentially connected with a junction box assembly, an upper guide bearing, a stator connected with the upper guide bearing, a lower guide bearing connected with the stator, a thrust bearing assembly at the back part and a mechanical sealing assembly, and various assemblies are connected by bolts; the formation components of a protective layer of an outer layer comprise a water outlet body at the top, a water absorption cover at the outer part and a union body connected with a downdraft pump; a suction inlet of the centrifugal pump is arranged at the lowermost part, and the motor is positioned above the centrifugal pump; and an impeller of the centrifugal pump comprises a positive guide vane and a negative guide vane. The invention can be used in an inflammable and explosive environment, can be used in an upright type, an oblique type and a horizontal type for adapting to an operation environment and has safe and reliable operation and long maintenance period.

Description

1. Technical field [0001] The invention relates to a high-voltage submersible electric pump, in particular to an explosion-proof down-suction high-pressure submersible electric pump for mines and wells. 2. Background technology [0002] In order to solve the phenomenon of water seepage in the mining operation surface of my country's coal mines and the drainage of underground mines containing methane or coal dust and explosive gas environments, water-filled submersible pumps are generally used. At present, the existing water-filled submersible pumps produced in my country are all ordinary vertical pumps. Although the drainage effect is very good, there are still shortcomings: 1. The water-filled submersible pumps on the market are not suitable for easy Inflammable and explosive environment; 2. It cannot be used in inclined or horizontal mode; due to the above reasons, the use conditions of submersible pumps are limited. Moreover, the water-filled submersible pumps currently o...

AI Technical Summary

Problems solved by technology

At present, the existing water-filled submersible pumps produced in my country are all ordinary vertical pumps. Although the drainage effect is very good, there are still shortcomings: 1. The water-filled submersible pumps on the market are not suitable for easy Inflammable and explosive environment; 2. It cannot be used in inclined or horizontal mode; due to the above reasons, the use conditions of submersible pumps are limited

Moreover, the water-filled submersible pumps currently on the market generally adopt a layer of explosion-proof protection devices. When operating in mines containing methane or coal dust and explosive gas environments, once sparks are generated, the consequences will be very dangerous.

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