COAXIAL HYDRAULIC SET Russian patent published in 2008 - IPC F03B13/08 

FIELD: hydraulic power engineering.

SUBSTANCE: invention relates to design of hydraulic sets and it can be used in high-head hydroelectric power stations. Proposed coaxial hydraulic set consists of two working wheels with rotary blades arranged in one shaft, one over the other, and rotating in opposite directions. According to invention, upper working wheel has tubular spherical housing which rests in process of rotation through support and centering rolls onto ring conical rail and is provided with rotary blades installed on trunnions arranged on inner surface of tubular spherical housing, blade rotating mechanism being installed in ring holder. Said holder is arranged on outer side of tubular spherical housing which serves simultaneously as turbine chamber of tubular working wheel.

EFFECT: increased single-unit power and efficiency of coaxial hydraulic sets.