WIND TURBINE ROTOR BLADE
    31.
    发明公开
    WIND TURBINE ROTOR BLADE 有权
    风力涡轮转子叶片

    公开(公告)号:EP2004989A1

    公开(公告)日:2008-12-24

    申请号:EP07704711.6

    申请日:2007-02-26

    IPC分类号: F03D1/06 F03D11/00

    摘要: A wind turbine rotor blade (1) with a suction side (13) and a pressure side (15) is provided. It comprises a cylindrical root portion (3) an airfoil portion (5) defining the suction side (13) and the pressure side (15), and a transition portion (7) which is located between the airfoil portion (5) and the root portion (3). The transition portion (7) has a transition profile changing from the airfoil of the airfoil portion (5) to the cylindrical profile of the root portion (3). The leading section of the transition profile is cylindrical and the trailing section of the transition profile is elongated. In the rotor blade, the maximum chord length of the airfoil portion (5) is at least the maximum chord length of the transition portion (7). In addition, the transition profile comprises a section with a concave curvature (25) on the pressure side (15) of the rotor blade (1).

    Vertical axis wind turbine rotor and aerofoil
    35.
    发明公开
    Vertical axis wind turbine rotor and aerofoil 审中-公开
    风力发电机组Achsenrotor und Schaufel

    公开(公告)号:EP2908003A1

    公开(公告)日:2015-08-19

    申请号:EP15152210.9

    申请日:2015-01-22

    发明人: Blaize, Michael

    IPC分类号: F03D3/06

    摘要: A vertical axis wind turbine comprises a symmetric aerofoil having a concavely curved tail portion defining a trailing edge angle of between 0° and 5° on either side of the chord, a maximum thickness centre point between 26% and 34% of the length of the chord from the leading edge, a leading edge curvature ratio (D1/D2) from 0.42 to 0.50, and a ratio of maximum thickness to chord length T/C from 0.12 to 0.19, preferably 0.16. Advantageously the rotor may have helical blades defining a cylindrical swept envelope with a positive angle of attack and a solidity ratio NC/D from 0.125 to 0.270, and is governed at a tip speed ratio from 2.25 to 4.00.

    摘要翻译: 垂直轴风力涡轮机包括具有凹弯曲尾部的对称翼型件,其限定弦的任一侧上的0°和5°之间的后缘角,最大厚度中心点在该弦的长度的26%至34%之间 弦前缘,前缘曲率比(D1 / D2)为0.42〜0.50,最大厚度与弦长T / C的比值为0.12〜0.19,优选为0.16。 有利地,转子可以具有限定具有正迎角的圆柱形扫掠包络线的螺旋叶片和从0.125到0.270的固定比NC / D,并且以尖端速度比为2.25至4.00。

    Blade for a wind turbine rotor
    39.
    发明授权
    Blade for a wind turbine rotor 有权
    风力涡轮机转子的叶片

    公开(公告)号:EP1963671B1

    公开(公告)日:2012-02-08

    申请号:EP06818148.6

    申请日:2006-12-05

    申请人: LM GLASFIBER A/S

    发明人: GRABAU, Peter

    IPC分类号: F03D11/00

    摘要: A blade (1) for a wind turbine rotor having a substantially horizontal rotor shaft, said ro¬ tor comprising a hub, comprises, seen in longitudinal direction along a longitudinal axis (10), a root area (2) closest to the hub, an airfoil area (4) furthest away from the hub and a transition area (3) between the root area (2) and the airfoil area (4). Seen in transverse direction, the blade (1) comprises a leading edge (5) and a trailing edge (6) as well as a chord plane (K) extending between the leading edge (5) and the trailing edge (6) of the blade (1). A surface zone with a plurality of indentations (7) and/or pro¬ jections is provided in at least the root area (2), said indentations and/or projections be¬ ing formed and dimensioned to improve the wind flow across the surface of the blade (1).

    摘要翻译: 一种用于风力涡轮机转子的叶片(1),该风力涡轮机转子具有基本上水平的转子轴,所述转子包括毂,沿纵向轴线(10)在纵向方向上看,最靠近毂的根部区域(2) 最远离轮毂的翼型区域(4)以及根部区域(2)和翼型区域(4)之间的过渡区域(3)。 沿横向方向看,叶片1包括前缘5和后缘6以及在前缘5和后缘6之间延伸的弦平面K, 刀片(1)。 至少在根部区域(2)中设置具有多个凹槽(7)和/或凸起的表面区域,所述凹槽和/或凸起的形成和尺寸被设计成改善穿过 刀片(1)。