Temperature rise control method and device of deep sea high-power motor

Abstract

The invention relates to a temperature rise control method and device of a deep sea high-power motor. The device comprises a motor enclosure, a heat exchange pipe, a pump chamber mounted in the motor and provided with an inlet and an outlet, an impeller mounted on a motor shaft, a motor end cover and a motor output shaft, wherein the motor and the heat exchange pipe are filled with a coolant; the heat exchange pipe is directly mounted at the bottom of a sea and placed in seawater; one end of the heat exchange pipe is communicated with an open hole in the motor enclosure; and the other end of the heat exchange pipe penetrates into the motor through the motor enclosure and is communicated with the outlet of the pump chamber. The motor is cooled by the heat exchange pipe directly mounted at the bottom of the sea and placed in the seawater, and the coolant in the heat exchange pipe and the motor for heat exchange between the seawater and the motor. The device has the characteristics that on the premise of not changing a basic structure of the motor, forced convection of the coolant can be formed for heat exchange with the seawater, so as to meet the requirements on miniaturization and light weight of the deep sea motor.

Description

Technical field [0001] The invention relates to a deep-sea motor cooling method, in particular to a deep-sea high-power motor temperature rise control method and device. Background technique [0002] With the continuous development of my country's marine economy and the continuous improvement of deep-sea exploration and development capabilities, especially deep-sea mining and deep-sea oil exploration and development, the demand for high-power motors that can work in deep-sea environments has become more and more obvious. Deep-sea motors with a water depth of more than 3000 meters often have the characteristics of high power density, and the increase in motor power density puts forward higher requirements for winding temperature rise control. As far as the deep-sea environment is concerned, traditional air cooling and the use of coolant circulation to The way the heat is taken away is limited, and the cooling method of high-power motors by the natural convection of seawater is far...

AI Technical Summary

Problems solved by technology

[0003] The patent "A Submarine Motor Cooling Method and Device" (publication number: CN102290923A) uses a double-layer motor casing and heat exchange tubes to form a shell-and-tube heat exchanger. The coolant in the motor is used as a thermal fluid in the shell, and seawater is used as The cold fluid flows in the tube layer and exchanges heat with the fluid in the shell layer. This motor cooling method can meet the temperature rise control requirements of the subsea motor, but the motor adopts a double-layer shell and a heat exchange tube must be placed between the two shells. As a result, the volume and weight of the motor will increase, which is in contradiction with the miniaturization and light weight of the deep-sea motor, and this method adopts the scheme of forced convection of seawater in the tube, which puts forward higher anti-corrosion requirements for the material of the heat exchange tube

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