FREE-STREAM TURBINE WITH FLOW ENERGY CONCENTRATOR AND HYDRAULIC UNIT WITH SUCH TURBINE Russian patent published in 2018 - IPC F03B3/00 F03B13/00 F03B17/06 

FIELD: power industry.

SUBSTANCE: in the opening of the supporting frame (1) a rotating rotor with paddles (4) attached to its shaft (2) is installed. Flow energy concentrator is designed as two partitions (6) of aperture, the ends (7) of which adjoin with clearance (8) to the cylindrical surface (9), swept by blades (4) when the rotor is rotating. In the partitions along the ends (7), on one or both sides of the opening of the frame (1), grooves (10) of the rounded profile are formed.

EFFECT: increase in the coefficient of utilisation of the flow kinetic energy and increase in the cost-effectiveness of material on the concentration of free-flow energy.

7 cl, 3 dwg