HYDROELECTRIC TURBINE TO BE USED IN BIDIRECTIONAL IN TIDE STREAMS Russian patent published in 2012 - IPC F03B13/10 F03B13/26 

FIELD: engines and pumps.

SUBSTANCE: proposed turbine comprises vaned rotor 34 vanes being arranged between inner ring 32 and outer ring 33. It is provided also with retaining appliances including mounting flanges 22, 23 and antifriction appliances including inserts 31 and bearings 72 limiting rotor biaxial displacement relative to housing 21. Water flowing in either direction actuates the turbine while retaining and antifriction means allow rotor to displace along the axis in both direction under effect of bidirectional water flow. Antifriction means limiting rotor axial displacement feature, preferably, increased thickness to allow rotor, as said means wear, to move axially relative to housing 21.

EFFECT: turbine operating in bidirectional water flow without turbine reorientation, axial displacement of rotor.

9 cl, 7 dwg