Waterproof motor on submersible pump

Abstract

The invention discloses a waterproof motor on a submersible pump. The waterproof motor comprises a motor cylinder, wherein the internal part of the motor cylinder is provided with a stator and a rotor, the middle part of the rotor is provided with a shaft, the stator is arranged outside the rotor, the stator is provided with a wire bag, the outer surface of the stator is provided with an insulating sleeve, the space between the insulating sleeve and the motor cylinder is filled with waterproof glue, and the waterproof glue wraps the wire bag. The waterproof motor disclosed by the invention is provided with a sealed cavity, so that the motor can still operate normally even having water seepage. The outer surface of the stator is provided with the insulating sleeve, the space between the insulating sleeve and the motor cylinder is filled with the waterproof glue, and the waterproof glue wraps the wire bag. The waterproof motor enables the diving depth of the submersible pump to be greatly improved, and the diving depth is increased from original 20m to current 300m. The motor can still work safely even all sealing parts of the submersible pump are invalid or have water seepage. The waterproof motor can work normally without installing sealing pieces while the service life time and the safety of the motor are not affected.

Description

technical field [0001] The invention relates to a waterproof motor, in particular to a waterproof motor on a submersible pump. Background technique [0002] The motor of the dry submersible pump is filled with air and runs in the water in the submersible well. During the manufacturing and assembly process of the motor, its stator winding and inner cavity should always be kept dry. At the same time, a single-end or double-end mechanical seal is installed on the shaft extension end of the motor. Therefore, when the submersible motor goes downhole, the stator winding is in the Work in a dry environment. However, when the dry submersible pump is used intermittently, the stator winding is constantly in a state of alternating cold and heat, and condensation is likely to occur on its surface, and the seal is aging or the "O" ring will leak, which will cause burn-in and leakage , will pose a danger to the safety of humans and animals. She will be in direct contact with the stator...

AI Technical Summary

Problems solved by technology

However, when the dry submersible pump is used intermittently, the stator winding is constantly in a state of alternating cold and heat, and condensation is likely to occur on its surface, and the seal is aging or the "O" ring will leak, which will cause burn-in and leakage , will pose a danger to the safety of humans and animals

She will be in direct contact with the stator winding, resulting in leakage and burn-in

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