BOREHOLE GENERATOR Russian patent published in 2011 - IPC E21B47/00 H02K21/12 

FIELD: electricity.

SUBSTANCE: generator includes protective housing, electric connector, at least one attachment assembly, rotor with hydraulic turbine, constant magnets and excitation windings. At that, rotor includes several discs with through radial slots in which constant magnets are installed. Poles of constant magnets are directed parallel to generator axis and alternate. Excitation windings are installed on both sides of each disc. Generator cavity is filled with lubricating fluid. On upper edge of rotor there is filling opening of lubricating fluid to the cavity of generator. Generator includes at least one pressure and temperature expansion compensator interconnected with generator cavity.

EFFECT: simplifying the design, improving reliability and power of generator at decrease of axial dimensions and weight of electric generator.

5 dwg