BLADE FOR LOW-SPEED TURBINES (VERSIONS) Russian patent published in 2010 - IPC F03D3/00 F03D5/00 F03B7/00 F03B9/00 

FIELD: engines and pumps.

SUBSTANCE: invention refers to low speed turbine mechanisms for liquid or air medium, for generation of electric energy. Blade for low speed turbines, which carries the load from medium flow and transmits it to power mechanisms, is rigid and consists of two different arms and axial bushing installed with possibility of blade rotation at the pressure thereon of medium flow in operating position or automatic folding of the blade at relief of flow pressure when the blade gets into counter-flow. Large arm is made so that it carries the power load of flow. Smaller arm is supporting at operating position. Blade is equipped with separate replaceable element to which there attached is axial bushing and rotating elastic roller attached in the axis to external edge of the blade.

EFFECT: increasing the efficiency of energy relief of water stream and increasing the efficiency of the whole plant.

2 cl, 5 dwg