Wind turbine blade, method of manufacturing wind turbine blade, and use of fabric in composite structure of wind turbine blade
AssigneeEnvision Energy CO.,LTD
InventorsJens Glud, Giancarlo Girolomini, Lars Overgaard
Life of this patent
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Abstract
A turbine blade and a method of manufacturing the wind turbine, wherein the wind turbine blade comprises a composite structure and a surrounding layer. The composite structure comprises a stack of pultruded elements where an infusion-promoting layer is arranged between adjacent pairs of pultruded elements (18). The infusion-promoting layers have a higher permeability than the surrounding layer so that the resin flows at a higher speed within the stacked structure than in the surrounding layer.
Claims12
A wind turbine blade for a wind turbine, comprising:
- at least one composite structure having a length, a width and a thickness, the at least one composite structure comprising a plurality of pultruded elements arranged in at least one stacked structure, wherein at least one infusion-promoting layer is arranged between at least two adjacent pultruded elements within the at least one stacked structure, the at least one infusion-promoting layer has a first permeability parameter, K1, in a width direction and further has a permeability parameter, K2, in a length direction, wherein K2 is less than K1,
- at least one surrounding layer arranged relative to the at least one composite structure, the at least one surrounding layer has a second permeability parameter, K1a in the width direction,
- K1 is greater than K1a, and
- wherein a first infusion speed, V1, of a resin through the at least one infusion-promoting layer is greater than a second infusion speed, V1a, of the resin through the at least one surrounding layer.
A method of manufacturing a wind turbine blade, comprising:
- providing a plurality of pultruded elements,
- further providing at least one surrounding layer, wherein the at least one surrounding layer has a second permeability parameter, K1a, in a width direction,
- arranging the plurality of pultruded elements in at least one stacked structure, wherein at least the infusion-promoting layer is arranged between adjacent pultruded elements within the at least one stacked structure, the at least one infusion-promoting layer has a first permeability parameter, K1, in the width direction and further has a permeability parameter, K2, in a length direction, wherein K2 is less than K1,
- introducing resin into the at least one stacked structure and the at least one surrounding layer using an infusion process, and
- curing the at least one stacked structure with resin to form a composite structure, the composite structure having a length, a width and a thickness,
- wherein K1 is greater than K1a, so that the resin flows through the at least one infusion-promoting layer at a first infusion speed, V1, and further through the at least one surrounding layer at a second infusion speed, V1a, wherein V1 is greater than V1a.
Dependencies are inferred from the claim text.