BORE-HOLE GENERATOR Russian patent published in 2011 - IPC E21B47/00 H02K21/38 

FIELD: oil and gas industry.

SUBSTANCE: bore-hole generator is equipped with protective housing, electrical connection, at least one attachment fitting, rotor with hydraulic turbine, constant magnets, rotor of generator and excitation windings fixed inside protective housing. At that, magnets and excitation windings are made in circumferential direction and installed in cylindrical housings with central hole with alternation and axial gaps between them. Discs having radial slots in which magnetic permeable inserts are installed are fixed on generator rotor. At that, discs are installed between excitation windings and constant magnets.

EFFECT: simpler design, improved reliability and increased power of generator at decreased diametrical dimensions and weight of electric generator.

8 cl, 7 dwg