The cooling mode in the cooling mode of the submersible pump for the well and the cooling mode of the external water

Oil filled type deep well pump using this cooling method. Oil filled motor internal filled withinsulation oil, its stator core, stator winding, rotor iron core and rotor winding (rotor and rotor end ring) and other components are immersed in oil. Part of the resistance loss resistance loss and end winding of motor stator iron stator slot winding loss, the heat generated directly through the stator core, the casing to pass through the surface of the casing wells away. The rotor winding and the rotor iron loss resistance loss of heat generated by the oil gap in part by directly transmitted to the stator, the shell pass

The motor outside the water away; another part to the rotor cavity filling Bo liquid, the end winding of this part of the heat and the stator to another part of the oil cavity heat resistance loss and mechanical loss of heat generated by the cavity filled with oil to the stator core, the casing and the bearing seat finally, through the surface of the motor casing and the bearing seat and other parts of the motor to the water away.

Cooling mode in the cooling mode of submersible pump in well and cooling mode of external water

Using this cooling method is mainly for wells dry type submersible pump motor. The dry air filled cavity, the stator end winding and rotor cooling machine mainly depends on the air inside. The stator iron loss, stator slot winding through the surface of the casing wells away. The rotor winding resistance loss and the rotor iron loss generated a part of air gap heat transfer directly to the stator core, through the pass to the motor outside the water away; the other part to the machine in the air, this part of the heat end winding and the stator to another part of the heat consumption of air resistance loss and mechanical loss of heat generated by the internal flow together. The air passed to the stator core, casing and bearing surface, finally through the motor casing and the bearing seat and other parts of the motor to the water away. Because of the poor thermal conductivity of air, heat capacity The quantity is very small, so the cooling condition of the stator winding and rotor winding of the well used submersible motor is poor, and the temperature rise is relatively high.

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