RENEWABLE ENERGY TYPE ELECTRIC POWER GENERATION DEVICE

摘要

A power generating apparatus of renewable energy type 1 is provided with a blade 7, a hub 6, a rotation shaft 9, a nacelle 4, a hydraulic pump 11 configured to be driven by the rotation shaft 9, a hydraulic motor 12 configured to be driven by the operating oil discharged from the hydraulic pump 11, a generator connected to the hydraulic motor 12, an oil line 14 for returning the operating oil from the hydraulic motor 12 to the working chamber of the hydraulic pump 11, an oil line cooler 18 provided in the oil line 14 for cooling the operating oil flowing in the oil line 14 by heat exchange with a coolant, a coolant line 41 for supplying the coolant to the oil line cooler 18, a branch line 31 branching from the oil line 18 for introducing the operating oil to a lubrication object of at least one of the hydraulic pump 11 or the hydraulic motor 12, and a branch line cooler 33 provided in the branch line 31 for cooling the operating oil flowing in the branch line 31 by heat exchange with a coolant. Further, two flows of the operating oil cooled to different temperatures by the oil line cooler 18 and the branch line cooler 33 are supplied to the working chamber and the lubrication object via the oil line 14 and the branch line 31, respectively.