TURBOGENERATOR Russian patent published in 2005 - IPC

FIELD: well drilling equipment, particularly one adapted to supply power to autonomous bottomhole logging and navigational complexes.

SUBSTANCE: turbogenerator comprises sealed body filled with lubricating fluid, provided with outer stator and inner rotor arranged on turbogenerator shaft and upper fairing. The shaft is mounted through rolling bearings. The upper fairing has orifices formed in conical surface thereof. Additional compensating means is installed on the shaft. The compensating means comprises collar, compensator cup filled with lubricating fluid, piston and spring arranged between the piston and the upper fairing. Additional sealing means is installed on shaft between compensator cup and generator stator. Compensator cup interior is communicated with that of sealed body through axial orifice formed in the shaft. Centering support is installed outside the sealed body in medium part thereof. Rolling bearings are arranged from both rotor sides and spaced apart for not more than 120 mm.

EFFECT: increased generator service time and useful capacity, as well as improved generator reliability.

1 dwg