REINFORCED BLADE FOR WIND TURBINE
First Claim
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1. A wind turbine blade comprising:
- a shell;
a first girder; and
a reinforcing member for inhibiting transverse shear distortion of the blade, wherein the reinforcing member is connected to the first girder at a connection between the first girder and the shell at one of the upper part and lower part of the shell, and wherein the reinforcing member is one ofa) a reinforcing angle bar with a first leg abutting the first girder, and a second leg abutting the one of the upper part and lower part of the shell, andb) a straight reinforcing member connected to the other one of the upper part and lower part of the shell at a distance from the girder.
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Abstract
The invention introduces a reinforcement of a box girder of a wind turbine blade. The reinforcement prevents the transverse shear distortion of the blade structure, when the blade is loaded during operation. The reinforcement connects the corners diagonally opposite inside the girder, and fixes them in relation to each other. The reinforcement increases the blade'"'"'s resistance to overall collapse. The reinforcement comprises one or more individual element, such as rods or plates.
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Citations
16 Claims
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1. A wind turbine blade comprising:
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a shell; a first girder; and a reinforcing member for inhibiting transverse shear distortion of the blade, wherein the reinforcing member is connected to the first girder at a connection between the first girder and the shell at one of the upper part and lower part of the shell, and wherein the reinforcing member is one of a) a reinforcing angle bar with a first leg abutting the first girder, and a second leg abutting the one of the upper part and lower part of the shell, and b) a straight reinforcing member connected to the other one of the upper part and lower part of the shell at a distance from the girder. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of inhibiting transverse shear distortion in a wind turbine blade with a shell and a first girder wherein the first girder is connected to an upper part of the shell and a lower part of the shell, the method comprising:
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providing a straight reinforcing member with a first end and a second opposite end; connecting the first end to the first girder at the connection between the first girder and the shell at the upper part or the lower part of the shell; and connecting the second end to the opposite part of the shell at a distance from the girder.
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16. A method of inhibiting transverse shear distortion in a wind turbine blade with a shell and a first girder wherein the first girder is connected to an upper part of the shell and a lower part of the shell, the method comprising:
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providing a reinforcing angle bar having a first leg and a second leg; and connecting the first leg to the first girder, and connecting the second leg to the upper part or the lower part of the shell.
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Specification