A kind of subsea motor cooling method
A cooling method and technology for motor casings, applied in cooling/ventilation devices, electrical components, electromechanical devices, etc., can solve problems such as limitations, achieve the process of accelerating natural convection heat transfer, low strength and sealing requirements, and improve heat transfer. The effect of efficiency
Active Publication Date: 2016-06-08
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology
The traditional air cooling and the use of cooling medium circulation to take away the heat of the casing are limited in the seabed, and the cooling of high-power motors by seawater natural convection is far from being able to meet the requirements of motor development for winding temperature rise design. A new cooling method is needed to solve the cooling problem of deep-sea high-power electric motors
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[0019] Referring to the accompanying drawings, a cooling method and device for a deep-sea high-power motor, including the outer wall 1 of the motor housing in the cooling device, the heat exchange tube 2, the inner wall 3 of the motor housing, the front end cover 4 of the motor housing, and the pump chamber 5. Composed of motor output shaft 6, impeller 7 and other components. The inner and outer layers of the motor housing are filled with a fluid medium with good transmission performance. One end of the heat exchange tube communicates with seawater through the opening a opened on the outer wall of the motor housing, and the other end passes through the opening b opened on the outer wall of the motor housing. The auxiliary pipeline communicates with the pump inlet c through the opening on the front cover of the pump chamber, and communicates with the seawater through the opening d on the pump chamber. When the motor is working, the impeller in the pump chamber is driven to rota...
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The invention relates to a cooling method and device for a deep-sea high-power motor, which is characterized in that it includes a heat exchanger composed of a motor shell and a heat-exchange tube. The seawater in the heat exchange tube exchanges heat with the fluid medium (oil or water) in the motor casing to take away the heat, and the fluid medium in the casing cools the motor; the seawater in the heat exchange tube is flowing; The motor is coaxial and is realized by a pump submerged in seawater; the device for realizing the method includes: a motor casing, a heat exchange tube, a pump chamber installed on the front cover of the motor, an output shaft connected to the output end through a key, and installed on the pump The impeller in the room is installed on the front end cover of the pump chamber, and it is characterized in that: the motor casing is a double-layer casing, one end of the heat exchange tube communicates with seawater through the opening on the casing, and the other end passes through the opening on the casing through the connecting pipe 1. The front end cover of the pump chamber communicates with the inlet of the impeller; the outlet of the pump chamber directly communicates with sea water, and the impeller is directly mounted on the motor shaft through a key. The invention has the advantages of simple structure, high heat exchange efficiency and high reliability, and can make full use of existing motors for transformation. Therefore, it can effectively solve the cooling problem of deep-sea high-power motors and meet the requirements of long life and thermal stability.
Description
technical field [0001] The invention relates to a cooling method for a subsea motor, in particular to a cooling method and device suitable for deep-water high-power motors. Background technique [0002] With the continuous development of my country's marine economy and the continuous improvement of marine 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 a 3000m deep-sea environment is becoming more and more obvious. However, the deep-sea working environment puts forward higher requirements on the long life and thermal stability of high-power subsea motors. The internal heat exchange of the motor directly affects the life and performance of the motor. The traditional air cooling and the use of cooling medium circulation to take away the heat of the casing are limited in the seabed, and the cooling of high-power motors by seawater natural convection is far from ...
Claims
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IPC IPC(8): H02K9/19
Inventor 陈国明周昌静尹树孟陈永超王丹
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)