Inner and outer double water cooling mode of electric motor :
Wells with water filled cavity water filling submersible pump, stator core, stator winding, rotor iron core and rotor winding (rotor and rotor end ring) were immersed in the water directly from the water cooling machine. Part of the resistance loss resistance loss and end winding of motor stator iron loss, stator slot winding 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 heat generated by a gas gap directly to the part of the stator, the stator to take the motor outside the well of water; the other part to the rotor cavity in water this part of the heat, the end winding and the stator to another part of the heat loss of cavity filling water resistance and mechanical loss of heat generated by the cavity filling water together, passed to the stator core, the casing and the bearing seat, and finally by electricity Motor casing and bearing seat and other parts of the surface of the water to take away. This motor inside and outside the cooling effect of the cooling mode is good, so the water filling submersible pump stator winding temperature rise is generally relatively low.
