Lm Wp Patent Holding A/s

Benjamin Hornblow

Martin Dahl

Bjarne Krab Mortensen

A wind turbine bladefor a rotor has a longitudinal direction extending from a root regionto a blade region. The wind turbine bladeis formed of a fibre-reinforced polymer material comprising a polymer matrix and a first and a second reinforcement fibre material being embedded in the polymer matrix. The wind turbine blade further comprises a first region being reinforced predominantly with the first reinforcement fibre material, a second region being reinforced predominantly with the second reinforcement fibre material, and a transition region between the first and the second region. The first region extends in the root regionand the first reinforcement fibre material is a metal.

Wind turbine blade comprising metal fibres and a transition region

A wind turbine blade for a wind turbine is a shell structure of a fibre-reinforced composite and comprises a root region and an airfoil region. The root region has ring-shaped cross section and comprises a plurality of elongated bushingswith an inner threadand embedded interspaced in the fibre-reinforced polymer so as to substantially follow the circumference of the root region and allow access from the outside to the inner threads. Each fastening memberis provided with a notchin the peripherythereof. A rod-shaped locking elementpasses through the notchin engagement therewith. The locking elementis fixedly and tightly fitting arranged in a through-going circular boreextending through the wall of the root region.

Wind turbine blade having a root region with elongated fastening members provided with metal fibres

A wind turbine blade for a wind turbine is a shell structure of a fiber-reinforced composite and comprises a root region and an airfoil region. The root region has a ring-shaped cross section and comprises a plurality of elongated bushingswith an inner threadand which are embedded interspaced in the fiber-reinforced polymer so as to substantially follow the circumference of the root region and allow access from the outside to the inner threads. The bushingsare formed conically tapering from a second end towards a first end thereof, the first end of the bushingbeing arranged at the end face of the root region.

Wind turbine blade with tapering root bushings

A wind turbine blade for a wind turbine is a shell structure of a fiber-reinforced composite and comprises a root region and an airfoil region. The root region has a ring-shaped cross section and comprises a cylindrical insertembedded in the fiber-reinforced polymer so as to substantially follow the circumference of the root region. The cylindrical insert is provided with a number of mutually spaced threaded boresin a first endthereof being accessible from the outside.

Wind turbine blade comprising cylindrical metal inserts in a root region thereof

A wind turbine bladecomprises a profiled contour including a leading edgeand a trailing edgeas well as a pressure side and a suction side. The profiled contour is formed by a first shell partand a second shell partbeing bonded together in a bonding region between the first and the second shell part by a curable bonding means. The first and the second shell partare formed in a fiber-reinforced polymer. The wind turbine blade further comprises resistive heating meansbeing arranged in thermal connection with the bonding meanssuch that the resistive heating meanssupplies heat for curing of the curable bonding meansduring assembling of the wind turbine blade.

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Copenhagen, Denmark

Benjamin Hornblow