ELECTRIC POWER GENERATOR OF DOWNHOLE TELEMETRIC SYSTEM Russian patent published in 2011 - IPC H02K7/18 

FIELD: electricity.

SUBSTANCE: electric power generator of telemetric system includes protective housing, electric connector, at least one attachment assembly, rotor with hydraulic turbine and conversion device of mechanical energy to electric; between rotor and conversion device of mechanical energy to electric there installed is magnetic coupling containing drive and driven semi-couplings, and conversion device of mechanical energy to electric is made in the form of piezoelectric elements and deformation devices for each piezoelectric element, which are connected by means of shaft to driven semi-coupling. Piezoelectric elements are made in the form of bimorph piezoelectric cylinders installed inside protective housing, and deformation devices are made in the form of disks installed on shaft, on both sides of which the rollers are installed on axes. Magnetic coupling is face-type. Magnetic coupling is cylindrical.

EFFECT: simplifying the design, improving reliability and power of generator at decrease of diametrical dimensions and weight of electric generator.

8 cl, 1 dwg