Cooling device and method for submarine motor

Abstract

The invention provides a cooling device for a submarine motor, which comprises a motor, a compensator, a cooler and a control system, wherein the motor comprises a motor housing, one end of the motoris connected with a pump group, and the other end of the motor is connected with an electric control variable pump; the compensator is used for compensating seawater pressure and is connected with theelectric control variable pump; the cooler is used for carrying out heat exchange on cooling liquid of the motor and seawater, and the cooler is communicated with the motor housing; the control system is connected with the electric control variable pump and the compensator and used for controlling and adjusting heat dissipation of the motor; and the cooler is communicated with the compensator, sothat the circulating flow of the cooling liquid is realized to cool the motor. The invention further provides a cooling method for the submarine motor. The cooling method uses the above cooling device for cooling.

Description

technical field [0001] The invention relates to a cooling device for a motor, in particular to a cooling device for a high-power motor in deep sea equipment. The invention also relates to a cooling method for a subsea electric machine. Background technique [0002] In recent years, with the continuous development of the marine economy, my country's marine exploration and development capabilities have been continuously improved, especially the development of deep-sea oil exploration and development and deep-sea mining, which has an increasing demand for high water pressure and high-power deep-sea motors bigger and bigger. At the same time, the deep-sea working environment has higher and higher requirements on the long life and thermal stability of high-power motors. The internal heat exchange of the motor and the high water pressure resistance of the housing directly affect the life and performance of the motor. [0003] Therefore, there is an urgent need for a motor coolin...

AI Technical Summary

Problems solved by technology

However, the heat dissipation capacity of the cooling method is positively related to the motor speed, which does not consider the influence of the motor power

When the speed is constant and the torque increases, the motor generates more heat, and seawater heat exchange cannot lower the temperature of the motor, which will burn out the motor and cause deep-sea equipment to fail to work, and its reliability is low

In addition, seawater is very corrosive. Once the heat exchange tube is corroded, the seawater will directly contact the inner wall of the motor shell, reducing the insulation performance of the motor.

At the same time, the inner wall of the motor casing is thin and easily deformed by seawater pressure, and the pressure resistance is poor

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