Cooling circulation loop for high-power high-speed submersible pump

Abstract

The invention discloses a cooling circulation loop for a high-power high-speed submersible pump. The cooling circulation loop comprises a first cavity, a second cavity, a third cavity and a fourth cavity which are arranged in the submersible pump. The cooling circulation loop comprises a first through hole A and a first through hole B which are arranged in the bearing support, and a connecting hole A and a connecting hole B which are arranged in the motor end cover, two ends of the first through hole A are communicated with the second chamber and the third chamber, and two ends of the first through hole B are respectively communicated with the third chamber and the connecting hole A; the two ends of a connecting hole B are communicated with the first cavity and the fourth cavity, the connecting hole B is further perpendicularly intersected with the connecting hole A, a first control valve for controlling connection and disconnection of the connecting hole A and the connecting hole B is arranged at the intersection point of the connecting hole B and the connecting hole A, and a second control valve for controlling connection and disconnection of the first through hole A and the third cavity is further arranged in the third cavity.

Description

technical field [0001] The invention belongs to the field of fluid machinery, and in particular relates to a cooling circulation circuit for a high-power high-speed submersible pump. Background technique [0002] The high-power high-speed submersible pump uses a wet motor to ensure the reliability of the unit. In the existing unit, an independent internal cooling cycle is used to cool and dissipate the wet motor, and at the same time cool and lubricate the bearings and other components. The specific circulation mode is that the thrust plate set at one end of the motor cavity serves as the auxiliary impeller to provide power source, the coolant reaches the end of the motor cavity away from the thrust plate through the cooling circulation pipe, and then returns to the motor cavity through the lower sliding bearing, motor air gap, upper sliding bearing and other areas. The thrust disc forms a cooling circuit. In this circuit mode, the coolant flowing out from the supply end ne...

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Problems solved by technology

[0003] Aiming at the problem that the cooling liquid in the cooling circulation circuit set in the above-mentioned submersible pump is easily caused by the excessive heat generation at the air gap of the motor, the cooling failure of the upper sliding bearing is easily caused, especially in the state of high power, the present invention Propose a Cooling Circulation Circuit for High Power High Speed ​​Submersible Pump

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