Wind Turbine Blade Joint
Publication Date: 2013-Feb-25
The IP.com Prior Art Database
A wind turbine blade joint using dowels to connect two parts of the blade together.
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Title: Wind Turbine Blade Joint
Abstract: A wind turbine blade joint using dowels to connect two parts of the blade together.
• Blade joint, to allow manufacture of a blade in 2 halves and join together in the field or in the factory.
• This is an adhesively bonded blade joint, using composite (glass or carbon fibre) dowel pins bonded into holes drilled in the blade sparcap and leading and trailing edges to carry the load.
• The sparcap may need to be made wider, or thicker and additional material may need to be put in to leading and trailing edge.
• Long deep tapered holes to be drilled into the two halves of the blade at the joint in sparcap, leading and trailing edges.
• Adhesive is put into the bottom of the holes, then premade long composite dowels, with a taper at each end are put into the holes and the blade brought together.
• Once the adhesive is cured the composite dowels will transfer the load across the joint.
• It may be advantageous to use high strength carbon fibre for the dowels, as this will allow the cross section of dowels to be less than the cross section that would be in the sparcap made of glass or normal carbon fibre at this location.
• The tapering of ...