HYDRAULIC UNIT Russian patent published in 2015 - IPC F03B13/10 

FIELD: electricity.

SUBSTANCE: hydraulic unit contains the hydraulic turbine and the electric generator. The channel of the hydraulic unit housing is formed by a surface of the channel of the electric generator rotor to which the ends of vanes of the hydraulic turbine rotor are rigidly fastened. The rotor of the electric generator contains the barrel with a cylindrical ledge in which the ring groove with magnetic system is made. The external surface of the rotor forms the working gap with the surface of the cavity of the laminated core of the stator fitted with grooves in which the winding coils fixed by wedges are laid. The stator with windings is placed in a tight cavity of the housing. The working gap of the rotor is tightly separated from the named housing cavity. The housing includes boards, detachably and tightly fastened to the cylindrical housing, and its internal surface is fitted with a groove in which the package of cores of the stator fitted on end faces with press sheets and fixed by a split ring is placed. Between sidewalls of the cylindrical ledge and the surfaces of boards the thrust bearings are installed. Between the end surfaces of the rotor and surfaces of cylindrical holes of boards the radial bearings are installed. The volume inside which the radial bearings are installed, is pressurised from a gap between the inlet and outlet channels and the housing channel.

EFFECT: increase of service of the hydraulic unit and its electric generator.

3 cl, 4 dwg