Mining explosion-proof submersible motor for booster pump

Abstract

The invention provides a mining explosion-proof submersible motor for a booster pump, and belongs to the technical field of explosion-proof submersible motors. The mining explosion-proof submersible motor is structurally characterized in that an independent connecting box mechanism is arranged on the upper portion of the motor, connecting wires between the inside and the outside of the motor are arranged in a cavity inside the connecting box mechanism and connected through power cable connecting posts, an adjusting bag is arranged in the connecting box mechanism, a joint between an upper end cover of the motor and the connecting box mechanism is provided with a first explosion-proof junction surface, a joint between the upper end cover of the motor and a motor body shell is provided with a second explosion-proof junction surface, and a joint between the motor body shell and a lower end cover of the motor is provided with a third explosion-proof junction surface. Cables are conveniently and rapidly connected, coal mining accidents caused by internal reasons of the motor can be effectively prevented when the motor breaks the surface of water as the water level in a mine falls, and the motor can safely run in scores of meters and even hundreds of meters of underwater environments.

Description

technical field [0001] The invention relates to the technical field of flameproof submersible motors, in particular to a mine flameproof submersible motor for relay pumps. Background technique [0002] In the past ten years, with the development of mining industry, mining high-pressure pumps have been more and more used in the production and drainage of mines. The mining high-pressure pumps used in underground coal mines all adopt the traditional form of upper pump and lower machine. This structure solves the heat dissipation problem of the motor during the use of the high-pressure mine pump. However, since the motor is located at the lower part of the pump, the There is often a problem of insufficient drainage during vertical installation. The solution is to equip a relay pump under the mine high pressure pump. Conventional relay pumps use either dry submersible motors or oil-filled motors. When a dry motor is used, the submersion depth is generally only a dozen meters. ...

AI Technical Summary

Problems solved by technology

When a dry motor is used, the submersion depth is generally only a dozen meters. When the submersion depth is too deep, the pressure difference between the inside and outside of the motor is too large, which can easily cause water to enter the motor and cause damage to the motor; when using an oil-filled motor, The submerged depth can reach tens of meters or even hundreds of meters, but the parts of the motor must be made of oil-resistant materials. As the main parts of oil-filled motors, the cost of oil-resistant power cables often accounts for more than half of the cost of the entire motor

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