ELECTRICAL MACHINE STATOR Russian patent published in 2010 - IPC H02K1/20 H02K9/12 

FIELD: electricity.

SUBSTANCE: stator of turbine generator with gas cooling includes housing (1), core (2). Between packs (3) of the core there located are ventilation channels. In high pressure chamber (4) there arranged are air ducts (5) which are interconnected with low pressure chambers located in the area of front parts of stator winding. Ventilation channels are integrated into groups alternating relative to symmetry plane (15) of stator core. Ventilation channels of group (6) are closed on the core bore side. In the teeth area the spacers are installed with possibility of gas flow shift to the neighbouring channel via through holes (9), in the frame yoke area - with possibility of gas passage in even ventilation channels from high pressure chamber to the teeth area, and in uneven ventilation channels - from teeth area to air ducts. In ventilation channels of group (7) the spacers provide gas passage from high pressure chamber to channel (10) which has output (14) to air gap (12) on low pressure chamber side.

EFFECT: improving the cooling of winding and teeth of stator owing to decreasing gas temperature in the gap between stator and rotor of electrical machine.

1 dwg