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本文示出三次抛物中线的导风轮叶片兼有比二次抛物中线叶片较大的通流能力和比圆弧中线叶片较小的减速梯度;此外它还具有这二者所没有的在与工作叶轮衔接处叶片曲率半径连续的这一特点。本文介绍了上海船厂关于能兼容上述气动性能好处的三次中弧面的导风轮叶片成型方法。最后介绍了设计工作轮结构时应注意的一些问题。
This paper shows that the three times the parabolic center of the wind turbine blades both than the parabolic midline blade flow capacity and a larger than the central line arc blade deceleration gradient; in addition, it also has both the absence and work Impeller convergence at the blade radius of curvature of this feature. This paper introduces the Shanghai Shipyard’s method of forming the guide vane for three times arc surfaces which can meet the above benefits of aerodynamic performance. Finally, some problems that should be noticed when designing the structure of the work round are introduced.