TURBO-GENERATOR TO ENERGIZE DOWN-HOLE EQUIPMENT Russian patent published in 2002 - IPC

FIELD: hole drilling, power supply of independent driving geophysical and navigation complexes. SUBSTANCE: turbo-generator has outer rotor with housing and working blades of turbine, inner stator with winding put on axis. Winding is encapsulated in sealing non- conductive material resistant to abrasive wear. Outer rotor is supported in plain bearings. Internal working surfaces of plain bearings are made of elastic material, for example, rubber, have through ducts and are put on separable bushings with collars, bushings being anchored on axle. Upper plain bearing is shut off from butt by fairing to form circular clearance between housing and it. Conical rubber bushing can be installed between lower plain bearing and generator support. Through ducts can have shape of polygon in cross-section. Working blades of turbine can be mounted on both sides of housing to form two working stages of turbine. Two rows of windows are made in housing between first and second working stages of turbine. EFFECT: improved operational reliability and prolonged service life of turbo-generator, simplified design with facilitation of operation and repair. 4 cl, 2 dwg