| 主权项 |
1. A wind turbine blade (10) for a rotor of a wind turbine (2), said rotor comprising a hub (8), from which the blade (10) extends substantially in a radial direction when mounted to the hub (8), the wind turbine blade including a shell structure of a fibre-reinforced composite material comprising fibres embedded in a polymer matrix, the blade having a longitudinal direction (r) with a tip end (16) and a root end (14) and a transverse direction as well as having a blade length (L), the blade further comprising:
a profiled contour including a pressure side and a suction side, as well as a leading edge (18) and a trailing edge (20) with a chord having a chord length (c) extending there between, the profiled contour, when being impacted by an incident airflow, generating a lift, wherein the profiled contour comprises:
a root region (30) comprising a root end face (29),an airfoil region (34) having a lift-generating profile furthest away from the hub, andoptionally a transition region (32) between the root region (30) and the airfoil region (34), wherein the root region comprises a ring-shaped cross section with an outer surface (36) and an inner surface (35), wherein the root region (30) comprises a plurality of elongated fastening members (40) provided with fastening means (48) and embedded mutually spaced apart in the fibre-reinforced polymer so as to substantially follow a circumference of the root region (30) and allow access from the outside to the fastening means (40) used for mounting the blade (10) to the hub (8),
the fastening members (40) comprise a first end (44) arranged at the root end face, a second end (46) opposite the first end (44) thereof and an outer periphery (42), characterised in that the fastening members (40) comprise an elongated cross-sectional profile with a first dimension (d1) oriented in a radial direction of the ring-shaped cross-section being larger than a second dimension (d2) oriented in a circumferential direction of the ring shaped cross-section. |
