利索-全球专利检索

  1. 登录
  2. 注册
发明公开
CN106089572A 一种减少风力机叶尖涡流的双段式小翼 无效 - 驳回

一种减少风力机叶尖涡流的双段式小翼
摘要：
本发明公开了一种减少风力机叶尖涡流的双段式小翼，属于风力机发电技术领域。双段式小翼(1)安装在风力机叶片(4)的叶尖(7)处。双段式小翼(1)包括一组非对称的叶片，即吸力面小翼(2)和压力面小翼(3)。吸力面小翼(2)位于风力机叶片(4)的叶片吸力面(5)一侧，压力面小翼(3)位于风力机叶片(4)的叶片压力面(6)一侧。吸力面小翼(2)与风力机叶片(4)法向夹角(α)为16°～19°，压力面小翼(3)与风力机叶片(4)法向夹角(β)为36°～39°。该种双段式小翼(1)能够削弱涡流的产生，增加升阻比，降低风力机运行产生的噪音，大幅度提高了叶片风能利用率及风力机的运行稳定性。
摘要（英）：

The invention discloses a double-section type winglet for reducing an eddy of a blade tip of a wind turbine, and belongs to the technical field of power generation of the wind turbine. The double-section type winglet (1) is mounted at the position of the blade tip (7) of a wind turbine blade (4). The double-section type winglet (1) comprises a group of unsymmetrical blades, i.e. a suction surface winglet (2) and a pressure surface winglet (3). The suction surface winglet (2) is positioned at one side of a blade suction surface (5) of the wind turbine blade (4); and the pressure surface winglet (3) is positioned at one side of a blade pressure surface (6) of the wind turbine blade (4). A normal included angle (alpha) between the suction surface winglet (2) and the wind turbine blade (4) is 16 degrees to 19 degrees, and a normal included angle (beta) between the pressure surface winglet (3) and the wind turbine blade (4) is 36 degrees to 39 degrees. According to the double-section type winglet (1), generation of the eddy can be weakened, a lift-drag ratio is increased, noise generated in the operating process of the wind turbine is reduced, and a wind energy utilization rate of the blade and operation stability of the wind turbine are greatly improved.

0/0