公开(公告)号：US20110150664A1

公开(公告)日：2011-06-23

申请号：US12976988

申请日：2010-12-22

申请人： Siegfried Mickeler ,  Walter Keller

发明人： Siegfried Mickeler ,  Walter Keller

IPC分类号： F03D1/06

CPC分类号： F03D1/0641 ,  F05B2240/301 ,  F05B2260/96 ,  Y02E10/721

摘要： A rotor blade and a wind turbine is provided that has such a rotor blade, wherein the absolute length L of the rotor blade extends from the blade attachment to the blade tip and the relative blade length x/L proceeds from the blade attachment. The rotor blade is divided into an inner longitudinal section Li associated with the blade attachment and an outer longitudinal section Lä associated with the blade tip, wherein the transition from the inner longitudinal section Li to the outer longitudinal section Lä defines the cross-sectional plane E0, and the blade tip defines the cross-sectional plane EE. As a function of the relative blade length x/L, the rotor blade has a specific aerodynamic profile with a chord t, a twist ⊖, a relative thickness d/t, a relative curvature f/t, and a relative trailing edge thickness h/t. In order to reduce acoustic emissions without having to accept appreciable losses in performance, it is proposed according to the invention that the cross-sectional plane E0 is located at a relative blade length x/L in the range between 0.80 and 0.98, the blade chord t of the aerodynamic profile in the cross-sectional plane EE is at least 60% of the blade chord t of the aerodynamic profile in the cross-sectional plane E0, and the blade twist ⊖ of the aerodynamic profile in the cross-sectional plane EE is greater than the blade twist ⊖ of the aerodynamic profile in the cross-sectional plane E0.

摘要翻译： 提供了具有这样的转子叶片的转子叶片和风力涡轮机，其中转子叶片的绝对长度L从叶片附件延伸到叶片尖端，并且相对叶片长度x / L从叶片附件进行。 转子叶片被分成与刀片附件相关联的内部纵向部分Li和与叶片尖端相关联的外部纵向部分La，其中从内部纵向部分L 1到外部纵向部分Lä的过渡限定了横截面E0 ，并且叶片尖端限定横截面EE。 作为相对叶片长度x / L的函数，转子叶片具有具有弦t，扭转⊖，相对厚度d / t，相对曲率f / t和相对后缘厚度h的特定空气动力学轮廓 / t。 为了减少声发射而不必承受性能上明显的损失，根据本发明提出，横截面E0位于0.80和0.98之间的相对叶片长度x / L处，叶片弦 横截面EE中的空气动力学特性曲线的t在截面E0中的空气动力学轮廓的叶片弦t的至少60％，横截面EE中的空气动力学特性的叶片扭转EE 大于横截面E0中的空气动力学轮廓的叶片扭转。。