Abstract:
A method for detaching or installing a rotor blade from or to a hub of a wind turbine includes positioning the rotor blade toward a ground location between a three o'clock position and a nine o'clock position. The method also includes mounting a mechanical arm to an uptower location of the wind turbine. Further, the mechanical arm includes a torqueing tool at a distal end thereof. Thus, the method also includes removing or installing, via the torqueing tool, each of the plurality of hub fasteners so as to detach or attach the rotor blade from or to the hub.
Abstract:
A method for detaching or installing a rotor blade from or to a hub of a wind turbine includes positioning the rotor blade toward a ground location between a three o'clock position and a nine o'clock position. The method also includes mounting a mechanical arm to an uptower location of the wind turbine. Further, the mechanical arm includes a torqueing tool at a distal end thereof. Thus, the method also includes removing or installing, via the torqueing tool, each of the plurality of hub fasteners so as to detach or attach the rotor blade from or to the hub.
Abstract:
The present disclosure is directed to systems and methods for manufacturing a wind turbine rotor blade that can be easily lifted and lowered to and from a rotor installed atop a tower. The method includes providing a plurality of root inserts for a blade root of the blade and securing at least one cylindrical member to one of the root inserts such that the cylindrical member is substantially perpendicular with the root insert. The method also includes arranging the root inserts in a blade mold of the blade and forming a blade shell with the plurality of root inserts laminated therein. The method may further include securing at least one attachment component within each of the cylindrical members so as to provide an attachment location for a pulley cable used to lift and lower the rotor blade to and from the rotor installed atop the tower.
Abstract:
A method for installing a surface feature on a wind turbine rotor blade includes disposing the surface feature on a surface of the rotor blade with an adhesive material disposed there between, disposing a seal between at least a portion of the surface feature and the rotor blade to form a chamber there between, and, pulling a vacuum from the chamber to produce a substantially uniform force pulling the surface feature against the surface of the rotor blade.
Abstract:
A wye ring centering system and method are provided. The system includes a plurality of rollers configured for contacting a wye ring, and a plurality of mounting fasteners configured for supporting the plurality of rollers. Each of the mounting fasteners is configured to pass through a fan hub. The plurality of rollers and the plurality of mounting fasteners are distributed at substantially equal intervals around the fan hub. The wye ring is placed over the plurality of rollers to center the wye ring around a shaft.
Abstract:
The present disclosure is directed to a system and method for lifting and/or removing a rotor blade to and from a wind turbine. In one embodiment, the system includes an up-tower pulley mounted on an up-tower location of the wind turbine, first and second ground winches, a pulley cable from the first ground winch over the up-tower pulley and attached to the rotor blade, a guide line attached between an up-tower location of the wind turbine and the second ground winch, a guide pulley mounted on the guide line, and a guide cable from the guide line over the guide pulley to the rotor blade. Thus, the guide pulley is configured to move along the guide line during lifting and removing of the rotor blade so that the guide cable can control an orientation of the rotor blade relative to the tower during lifting and removing of the rotor blade.
Abstract:
A method of removing a part from a shaft is provided. The part is attached to the shaft with an interference fit. The method includes the steps of, inserting an expandable plug into the shaft, and adding coolant to an interior of the shaft. The coolant cools the shaft from the interior of the shaft to an exterior of the shaft. Another step removes the part from the shaft. The part is removed from the shaft without sustaining damage to either the part or the shaft, so that the part and the shaft may be refurbished or reused.
Abstract:
A lift system for a rotor blade of a wind turbine includes a lifting device having a structural frame body having a root end and a tip end. The root end supports a root cradle and the tip end supports a tip cradle. The root and tip cradles each have a profile that corresponds to at least one exterior surface of the rotor blade so as to receive and support at least a portion of the rotor blade. Due to a shape of the rotor blade, when the rotor blade is installed in the lifting device and lifted uptower, the rotor blade can experience an asymmetric loading. Accordingly, the lift system also includes a variable airflow assembly coupled to tip end of the lifting device. The variable airflow assembly includes at least one surface moveable between a plurality of positions having varying resistances so as to counteract the asymmetric loading.
Abstract:
A rotor turning device for balancing a rotor secured atop a tower of a wind turbine during installation and/or repair of one or more rotor blades of the wind turbine includes a hydraulic drive mechanism for operably engaging with a brake disc of the wind turbine. The brake disc is positioned adjacent to a gearbox of the wind turbine. The rotor turning device also includes a mounting device for securing the rotor turning device adjacent to the brake disc of the wind turbine. Thus, when the hydraulic drive mechanism engages the brake disc, the rotor is rotated to a desired position so as to position one or more rotor blades of the wind turbine in a balanced configuration.
Abstract:
A method for installing a plurality of rotor blades to a rotatable hub secured atop a tower of a wind turbine includes providing a counterweight assembly having, at least, an arm member and a counterweight mass secured at a distal end of the mounting assembly. The method also includes securing the arm member of the counterweight assembly to the hub of the wind turbine. Further, the method includes consecutively installing the plurality of rotor blades onto the hub of the wind turbine. Moreover, the method includes rotating the arm member about a rotation axis of the hub to continuously adjust a position of the counterweight mass between each consecutive installation of the plurality of rotor blades to change a center of gravity of the hub and maintain a balanced rotor of the wind turbine during installation of the plurality of rotor blades.