Pitch Gears With Intelligent Shaft Sealing
Simrit has developed a radial-shaft seal system featuring a leakage sensor that allows for telediagnosis of the shaft seal and automatically sends a signal when the seal's wear limit is reached. With the help of these intelligent shaft seals, Wittenstein alpha has maximised the service life and service intervals of its pitch gears for rotor adjustment. Pitch gears are key components in wind turbines around the world. They are used to adjust the pitch of the rotor blades, which in turn changes the aerodynamic efficiency of the turbine. Thanks to pitch gears, wind turbines can be operated at the optimum pitch until the rated power of the generator is reached. If the maximum generator torque is exceeded, the speed is adjusted by changing the pitch of the rotor blades. If performance remains constant, pitch gears allow wind turbines to operate continually at the optimum operating point. One pitch gear per rotor blade is attached directly to the hub by screws. Wittenstein alpha has opt...