Turbine for a hydroelectric power plant, and hydroelectric power plant

摘要

The invention relates to a turbine provided for a hydroelectric power plant, comprising a hub (430); a plurality of turbine blades (440) that are provided on the hub (430); a pitch angle adjusting unit (460) that is coupled to the turbine blades (440) for adjusting the pitch angle of the turbine blades; a double-acting hydraulic cylinder (450); and a piston rod (470) that is connected to said hydraulic cylinder. The piston rod (470) is coupled to the pitch angle adjusting unit (460) such that the pitch angle adjusting unit (460) carries out a rotational movement when the piston rod (470) is moved in the longitudinal direction. The double-acting hydraulic cylinder (450) is provided in a hydraulic chamber that is coupled via a first and a second hydraulic line such that the double-acting hydraulic cylinder can be moved by feeding a hydraulic fluid through the first or second hydraulic line and therefore causes an adjustment of the pitch angle of the turbine blades (440) via the coupling to the piston rod (470) and the pitch angle adjusting unit (460).