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US 2021/0199092 A1Published application
Blade assembly method on a rotor hub of a wind turbine
AssigneeNordex Energy Spain, S.A.U.
InventorJose Luis LABORDA RUBIO
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Abstract
The present invention relates to a blade assembly method on a rotor hub of a wind turbine wherein the maximum torque supported by the gearbox is greater in one direction than in other (positive in the invention instead of negative) selecting an appropriate direction for rotating the hub and an appropriate side for connecting each blade.
Claims20
A blade assembly method on a rotor hub of a wind turbine, wherein the wind turbine comprises:
- a tower,
- a nacelle comprising a generator
- a rotor comprising a hub;
- wherein the nacelle and the rotor are disposed on top of the tower;
- and
- three blades intended to be attached to the hub of the rotor disposed on top of the tower;
- and
- wherein the method comprises the following steps:
- a first step wherein a first blade connection flange of the hub is located in a first azimuthal position and a first blade is attached in a substantial horizontal position to the first blade connection flange of the hub;
- a second step wherein the first blade connection flange of the hub having the first blade attached is rotated in a first direction until a second blade connection flange of the hub is located in the first azimuthal position;
- a third step wherein a second blade is attached in a substantial horizontal position to the second blade connection flange of the hub located in the first azimuthal position;
- a fourth step wherein the hub having the first blade and the second blade respectively attached to the first connection flange and the second connection flange is rotated in a second direction opposite to the first direction until a third blade connection flange of the hub is located in a second azimuthal position;
- and
- a fifth step wherein a third blade is attached in a substantial horizontal position to the third blade connection flange of the hub located in the second azimuthal position.
11 more elements
Dependencies are inferred from the claim text.