Rotor blade for a wind turbine
AssigneeGeneral Electric Company
InventorsFlorian Doorenspleet, Rainer Arelt, Enno Eyb
Life of this patent
Estimating the term…
Abstract
A rotor blade for a wind turbine is provided, wherein the rotor blade has radial bores in a wall of a blade root portion, the radial bores being staggered in a longitudinal direction of the rotor blade, and longitudinal bores in the wall of the blade root portion, wherein each of the longitudinal bores extends from a blade flange to a corresponding radial bore.
Claims20
A rotor blade for a wind turbine, comprising
- a first plurality of radial bores in a wall of a blade root portion, said first plurality of radial bores having a first diameter;
- a second plurality of radial bores in the wall of the blade root portion, said second plurality of radial bores having a second diameter different from the first diameter, said first and second plurality of radial bores being staggered in a longitudinal direction of said rotor blade;
- and
- a plurality of longitudinal bores in the wall of the blade root portion, wherein each of said plurality of longitudinal bores extends from a blade flange to a corresponding one of said first and second plurality of radial bores.
A wind turbine rotor blade comprising, in a blade root section thereof,
- a first plurality of radial holes in a wall of a blade root portion, said first plurality of radial holes having a first diameter;
- a second plurality of radial holes in the wall of the blade root portion, said second plurality of radial holes having a second diameter different from the first diameter, said first and second plurality of radial holes being staggered in a longitudinal direction of the rotor blade;
- and
- a plurality of longitudinal holes, each longitudinal hole connecting a hub end of said rotor blade and a radial hole,
- wherein said plurality of longitudinal holes comprises a first group of short holes and a second group of holes so that the radial holes associated with the first group and the radial holes associated with the second group are spaced with respect to each other in a longitudinal direction of the rotor blade.
A wind turbine having at least one rotor blade, said rotor blade being attached to a hub by means of a T-bolt connection,
- wherein the T-bolt connection comprises fastening bolts inserted into longitudinal bolt holes provided in a blade root of the rotor blade, and cross bolts inserted into a plurality of radial bolt holes provided in the blade root of the rotor blade,
- wherein the plurality of radial bolt holes comprises:
- a first plurality of radial bores in a wall of a blade root portion, said first plurality of radial bores having a first diameter;
- a second plurality of radial bores in the wall of the blade root portion, said second plurality of radial bores having a second diameter different from the first diameter, said first and second plurality of radial bores staggered in a longitudinal direction of the rotor blade;
- and
- wherein short longitudinal bolt holes and corresponding short fastening bolts and long longitudinal bolt holes and corresponding long fastening bolts are provided in said T-bolt connection.
Dependencies are inferred from the claim text.