Wind machine blade and method for designing same
A technology for wind turbine blades and design methods, which is applied to wind turbines, wind turbines consistent with the wind direction, mechanical equipment, etc., can solve the problems affecting the overall operating efficiency of wind turbines, increased blade loads, and increased blade costs. Effects of optimization of anti-fatigue performance, weight reduction, and reduction of laminate thickness
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[0033] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0034] In an exemplary embodiment of the present invention, the blade structure of the horizontal axis wind turbine includes a girder, a reinforcing rib and a skin covering the outside of the girder.
[0035] In this embodiment, holes are provided on the girder along the radial direction of the blade. image 3 It is a structural schematic diagram of a horizontal axis wind turbine blade girder according to an embodiment of the present invention. Such as image 3 As shown, the opening 21 may be a rectangular opening, and the distance from the rectangular opening 21 to the upper and lower edges of the girder 2 is greater than 1 / 5 of the overall width of the girder. There are less than 10 rectangular openings on the girder ...
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