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轴流泵水力模型叶片设计步骤一般为:1.根据设计参数进行水力计算,在此基础上选择翼型;2.将翼型的型值点点集按不同的圆柱半径比例变换成相应尺寸的点集;3.将坐标原点由叶片前缘端部平移到选定的叶片转轴中心处;4.按叶片装置角大小将这个点集回绕坐标原点进行旋转变换; 5.将旋转变换后的点集依次连接成光滑的曲线,由工作面曲线和背面曲线共同构成完整的翼型截面图;6.在翼型截面图上作轴面线和水平等分线,相邻水平等分线的距离即为木模中木板的厚度;7.画木模截线图和轴面图。
Axial flow pump hydraulic model blade design steps are generally: 1 according to the design parameters of hydraulic calculation, based on this choice of airfoil; 2 airfoil type point set according to the different diameter of cylindrical radius into the corresponding size of the point 3. Move the coordinate origin from the leading edge of the blade to the center of the chosen blade axis; 4. Rotate the point set around the coordinate origin according to the angle of the blade device; 5. Rotate the rotated point set Connected in turn into a smooth curve, the curve of the face and the back of the curve together constitute a complete airfoil cross-section; 6 airfoil cross-section for axial line and horizontal bisector, the distance between adjacent horizontal bisecting line For the wood in the thickness of wood plank; 7 draw wood mold cross-section diagram and axial map.