Internal circulation oil-filled submersible motor with double-layer shell

Abstract

The invention discloses an internal circulation oil-filled submersible motor with a double-layer shell, and relates to the technical field of submersible motors. The submersible motor specifically comprises a fully-enclosed outer shell and an inner shell coaxially fixed in the outer shell, wherein the inner shell is provided with a hole leading to an inner cavity of the outer shell, the front endand the rear end of the outer shell are respectively provided with a front end cover and a rear end cover, the front end cover is provided with a front thrust bearing, the rear end cover is provided with a rear thrust bearing, a motor rotating shaft is arranged between the front thrust bearing and the rear thrust bearing, the motor rotating shaft is arranged in the inner shell of the motor, one end of the motor rotating shaft penetrates through the front end cover, a rotor is fixed in the middle of the motor rotating shaft, a stator is arranged in the inner shell of the motor, the stator is arranged at the outer end of the rotor and corresponds to the rotor in position, and a heat dissipation module is arranged in the motor to drive hydraulic oil to circularly flow between the inner shelland the outer shell of the motor. By adopting the motor double-layer shell structure and the motor heat dissipation module, an additional power device does not need to be installed, the circulation flow of hydraulic oil in the motor is realized, and the heat dissipation capability of the motor is enhanced.

Description

technical field

[0001] The invention relates to the technical field of submersible motors, in particular to an oil-filled submersible motor with internal circulation in a double-layer shell. Background technique

[0002] The submersible motor works in a deep water environment, and uses the oil filling method inside the motor to balance the external environmental pressure. As the submersible motor is the main or even the only power equipment for deep-water equipment, the output power density of the motor needs to be high, so that the motor will generate a lot of heat during normal operation. If it is dissipated in time, there will be problems of untimely and insufficient heat dissipation, which will easily lead to local overheating of the motor, shorten the life of the motor, and even burn the motor. Contents of the invention

[0003] The present invention overcomes the deficiencies of the above-mentioned prior art, and provides a double-layer casing inner circulation oil-...

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