TURBOGENERATOR FOR SUPPLY OF WELL EQUIPMENT Russian patent published in 2015 - IPC E21B47/00 H02K44/08 H02K5/124 

FIELD: oil and gas industry.

SUBSTANCE: turbogenerator is proposed, comprising an inner stator with a winding and an outer rotor with a body and working blades of a turbine installed on sliding bearings. At the same time inner and outer working surfaces of sliding bearings are made from solid wear resistant material with high heat conductivity. Besides, the turbogenerator comprises a sealing element preventing through flow of washing fluid via a gap between the stator and the rotor. At the same time the sealing element may be made in the form of a contact seal installed below the upper bearing. At the same time on the rotor body there is one row of windows, the entry into which is located between the upper bearing and contact seal on the inner side of the rotor body, and the exit from which is located below the working wheel on the outer side of the rotor. The sealing element may also be made in the form of a cover installed on the upper end of the cover rotor.

EFFECT: increased reliability and resource of device operation, simplified design and its operation.

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