CENTRIPETAL TURBINE Russian patent published in 2017 - IPC F01D11/08 F01D1/08 F01D25/30 

FIELD: machine building.

SUBSTANCE: centripetal turbine comprising a casing, radial-axial turbine impeller provided with a blading is proposed. A collar spanning the gap between the casing and the impeller blades is made on the centripetal turbine casing on the working medium outlet from the blading radial-axial impeller. The distance between blade system tailing edge and the collar on the centripetal turbine casing is less than the gap between the periphery of the blade system and the centripetal turbine casing. On the output side of the working medium the collar may be formed with a flat surface disposed normally to the oncoming flow of working fluid.

EFFECT: reduction of the working medium fluid leaks through the gap between the impeller blade and the housing, and increase turbine efficiency.

2 cl, 1 dwg