Bulb tubular turbine generator ventilation and cooling system

The present invention discloses a bulb tubular turbine generator ventilation and cooling system. The system comprises a unit wind screen fixed between a bulb head and a generator unit, and a heat exchange air channel fixed at the upper end of the unit wind screen. The air outlet of the heat exchange air channel is arranged on the unit wind screen, the opening faces a rotor support, a rotor supportweb and/or a center ring plate are provided with an axial vent hole, a rotor magnet yoke is provided with a radial centrifugation vent hole, an interpolar space is formed between adjacent magnetic pole support structures, the radial centrifugation vent hole, the interpolar space and a stator core radial vent groove I communicate with one another, a ventilating duct is arranged between the statorcore and a stator engine base, and the ventilating duct is connected with the inlet of the heat exchange air channel. The stator engine base omits a traditional stator wall-pasting structure, is provided with a ventilating duc