Turn Drive for a Wind Turbine, and Method for Rotating the Rotor Shaft of a Wind Turbine
AssigneeSenvion SE
InventorsMichael BROKES, Ulf EDELMANN, Carsten EUSTERBARKEY, Sven LEHMANN
Life of this patent
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Abstract
The invention relates to a turn drive for a wind turbine. The turn drive comprises a shaft, a hydraulic motor for driving the shaft, and a drive line for supplying a pressurized hydraulic fluid to the hydraulic motor. According to the invention, the drive line is provided with a settable pressure-limiting valve. The invention additionally relates to an associated method for rotating the rotor shaft of the wind turbine. By means of the method according to the invention and the turn drive, the rotor blades can be mounted individually on the hub of the rotor, without the gearbox of the wind turbine becoming overloaded.
Claims15
A turn drive for a wind turbine, comprising a shaft (52), a hydraulic motor (27) for driving the shaft (52), and a drive line (39) for supplying a pressurized hydraulic fluid to the hydraulic motor (27), wherein the drive line (39) is provided with a settable pressure-limiting valve (30).
A method for rotating the rotor shaft (17) of a wind turbine, wherein the rotor shaft (17) is connected to a gearbox (18) of the wind turbine, having the following steps:
- a. connecting a turn drive to the high-speed shaft (19) of the gearbox (18), wherein the turn drive is equipped with a hydraulic motor (27);
- b. setting a pressure-limiting valve (30) in a drive line (39) of the hydraulic motor (27) to a predefined threshold value, in order to limit the torque that can be transmitted to the gearbox (18);
- c. supplying a pressurized hydraulic fluid to the hydraulic motor (27), wherein the pressure-limiting valve (30) opens when the pressure of the hydraulic fluid exceeds the predefined threshold value.
Dependencies are inferred from the claim text.