HYDRAULIC UNIT OF SMALLER HYDROELECTRIC STATION Russian patent published in 1996 - IPC

FIELD: hydraulic engineering for generating electric power at small or microhydroelectric stations. SUBSTANCE: connected to main hydraulic turbine is pump having rotor provided with shaft and outlet branch pipe; connected to pump is auxiliary hydraulic turbine which has rotor provided with shaft and inlet branch pipe which is connected to electric current generator; pump shaft is connected with shaft of main hydraulic turbine; outlet branch pipe of pump is connected with inlet branch pipe of auxiliary hydraulic turbine; shaft of auxiliary hydraulic turbine is connected with shaft of electric current generator. Pump shaft may be connected with shaft of main hydraulic turbine through reduction gear. Maximum effect will be obtained if radial-axial hydraulic turbine developing speed of 80 to 145 r/min is used as auxiliary hydraulic turbine. EFFECT: enhanced reliability. 3 cl, 3 dwg