Dry-submarine dual-purpose motor system

Abstract

The invention relates to a dry-submarine dual-purpose motor system which comprises a motor, wherein the motor comprises a rotor and a stator, and a bearing and a sealing assembly are arranged between an output shaft as well as a front end cover and a rear end cover; an outer shell is sleeved outside an inner shell, and a cold-heat exchanger is arranged along the axial direction in an annular sleeve-shaped cavity surrounded by the outer shell and the inner shell; the inflow end, the internal path and the outflow end of the cold-heat exchanger are communicated with the surrounding working environment of equipment to form an outer circulating path; the cavity body in which the outer wall of the cold-heat exchanger between the outer shell and the inner shell is positioned is communicated withthe cavity in the inner shell to form an inner circulating path; and the rear end of the output shaft is suspended and connected with a load water pump. The inner circulating path is arranged in the closed cavity body where the rotor and the stator are positioned and is completely isolated from the outer circulating path, so that both the rotor and the stator can be in a safe working environment whether environmental gas or circulated water when in flooding is circulated in the outer circulating path, and the load water pump is driven by the motor to normally drain the water.

Description

technical field [0001] The invention relates to a power device for drainage, in particular to a dry-submersible dual-purpose electric motor system. Background technique [0002] Coal mine drainage is an important part of production activities and a necessary condition for safe production. Flooding and well flooding caused by flooding and sudden water gushing in coal mines are the second largest coal mine safety accidents after gas explosions. In order to maintain production order and safe production, the coal mine is equipped with a high-lift main drainage pump with a certain amount of redundancy, and a high-voltage asynchronous motor driving the main drainage pump. [0003] The driving motor of the main drainage pump and the high-voltage switchgear are generally installed in the deepest part of the coal mine, that is, in the central pump room near the underground parking lot. The occurrence of water seepage accidents is generally due to the excavation of karst caves or ab...

AI Technical Summary

Problems solved by technology

The traditional high-voltage driving motor of the main drainage pump is a conventional land-based motor, which has no ability to resist flooding. When the water level rises to the motor wiring part, the water pump motor cannot work normally. Once the main drainage pump stops working, the water level will rise rapidly due to water gushing, causing mine flooding accident

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