Manufacturing a wind turbine blade shell part
AssigneeLm Wind Power A/S
InventorsArtur FERFECKI, Lars NIELSEN
Life of this patent
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Abstract
The present invention relates to a method for manufacturing a wind turbine blade shell part made of a fibre-reinforced composite structure, including steps of mounting a plurality of fastening devices on a mounting plate to form a root end assembly, the mounting plate comprising one or more first openings for evacuating air; arranging the root end assembly over a mould surface of a mould; arranging an air-tight cover member so as to form a mould cavity; evacuating air from the mould cavity via at least the one or more first openings of the mounting plate; and supplying a polymer into the mould cavity and allowing the polymer to cure so as to form the composite structure. A root end assembly for use in the method is also provided.
Claims15
A method for manufacturing a wind turbine blade shell part (11) made of a composite structure comprising a fibre-reinforcement material embedded in a polymer matrix via vacuum assisted resin transfer moulding, the method comprising the steps of:
- mounting a plurality of fastening devices (74) on a first side (77) of a mounting plate (70) so as to form a root end assembly, the mounting plate comprising one or more first openings (101) for evacuating air, the mounting plate having a second side (79) opposite the first side (77),
- arranging the root end assembly, one or more outer fibre layers (68) defining an outer surface of the wind turbine blade shell part, and one or more inner fibre layers (95) on a mould surface (22) of a mould (20) such that the fastening devices are arranged above a root end section of the mould and are embedded between the one or more outer fibre layers and the one or more inner fibre layers,
- arranging an air-tight cover member (80) so as to form a mould cavity defined by the air-tight cover member, the mould surface, and the mounting plate, with the one or more outer fibre layers, the one or more inner fibre layers, and the fastening devices arranged within the mould cavity,
- evacuating air from the mould cavity via at least the one or more first openings of the mounting plate, and
- supplying a polymer into the mould cavity and allowing the polymer to cure so as to form the composite structure.
A root end assembly (100) for a wind turbine blade shell part (11), comprising:
- a mounting plate (70) having a first side (77) and a second side (79), and
- a plurality of fastening members (74) mounted on the first side of the mounting plate, the mounting plate being adapted to be removed after the root end assembly has been mounted in the wind turbine blade shell part, the mounting plate further comprising one or more first openings (101) blocked with a semipermeable material (102) that is permeable for air and nonpermeable for a fibre-reinforcement polymer, whereby the polymer is prevented from passing through the one or more first openings.
Dependencies are inferred from the claim text.