Low-center high-capacity high-speed positive pressure type high-voltage three-phase asynchronous motor

The invention discloses a low-center high-capacity high-speed positive pressure type high-voltage three-phase asynchronous motor. The upper side of the base of the motor is provided with a water cooler; a relief valve is arranged at the inlet of the water cooler; a square key and a sealing gasket are arranged between the base of the motor and the housing of the water cooler; the height of the gasket is higher than that of the squire key; a lead hole is formed in the base of the motor; a cable gland is provided on the lead hole. An internal bearing cover is inserted in a rotating shaft of the motor; the internal bearing cover is provided with an annular cavity; a carbon seal ring is provided within the annular cavity; the surface of the inner ring of the carbon seal ring is in contact with that of the outer ring of the rotating shaft of the motor; two ends of the carbon seal ring are in contact respectively with the walls of the two chambers of the annular cavity. An axially extending fixing bolt is arranged on the internal bearing cover; the fixing bolt is inserted through the carbon seal ring through a positioning groove. The invention aims at providing a low-center high-capacity high-speed positive pressure ventilation type high-pressure explosion-proof motor which is safe and reliable, good in sealing performance and long in service life.