WELL GENERATOR Russian patent published in 2012 - IPC E21B47/22 H02K7/18 

FIELD: electric engineering.

SUBSTANCE: the invention relates to electric engineering and is used to supply power to well equipment. The well generator comprises a protective casing, electric socket, at least one attachment fitting, a rotor with a hydroturbine, permanent magnets, furthermore, the rotor and actuating coils are fixed inside the protective casing, magnets and actuating coils have circular shape and are positioned inside a cylinder with alternation and axial clearance between them. The generator has an additional rotor installed concentrically with the first rotor and connected with it through a reductor. The second rotor ahs a disc with soft magnetic inserts, which is positioned between the actuating coil and permanent magnet. The well generator contains at least one pressure and temperature expansion compensator, linked with the driving clutch.

EFFECT: simplification of the well generator design, increased reliability and power output while reducing the generator size and weight.

3 cl, 4 dwg