文档介绍：低比转速高速离心泵的设计目录摘要…………………………………………………………… 41前言……………………………………………………………… 52 叶轮的水力设计………………………………………………… 6 泵的主要设计参数和结构方案的确定…………………… 6 叶轮主要参数的选择和计算………………………………… 8 叶轮的绘型………………………………………………… 14 叶轮进出口速度三角形的绘制…………………………… 293 压水室的设计与计算………………………………………… 30 压水室的结构参数………………………………………… 30 压水室断面形状及各断面面积…………………………… 31 压水室平面图的绘制…………………………………… 344 诱导轮设计…………………………………………………… 36 提高泵汽蚀性能的原因…………………………………… 36 诱导轮的计算……………………………………………… 365增速部分的设计……………………………………………… 416 结构设计…………………………………………………… 45 主轴的结构设计…………………………………………… 45 装配图轮廓尺寸的………………………………………… 45 2 7 强度计算……………………………………………………… 47 泵轴的强度校核…………………………………………… 47 泵轴的临界转速计算…………………………………… 548 键的强度计算………………………………………………… 55 叶轮处键的强度计算……………………………………… 55 联轴器处键的强度校核…………………………………… 569结论…………………………………………………………… 57 总结与体会……………………………………………………… 57谢辞……………………………………………………………… 58 参考文献……………………………………………………… 59 3摘要本设计是根据给定设计参数完成高速离心泵的水力及结构设计。主要包括叶轮、压水室的水力设计和泵的结构设计。确定出叶轮的几何参数, 绘制并检查叶轮轴面投影图,采用方格网保角变换法完成扭曲形叶片绘形。利用数字积分法, 根据蜗壳内速度矩守恒, 确定出蜗壳八个断面参数, 并进行绘形。最后对泵进行结构设计, 绘制了装配图和部分零件图, 并对轴进行了强度校核计算。关键词:离心泵;叶轮;蜗壳;水力设计;结构设计 Abstract According to the design parameters at the given point, this paper plished the design of the centrifugal pump. It mainly contained the hydraulic design of the impeller, volute casing and structural of pump, structural design of the pump. Based on the resolution method of design of the pump, author obtained the geometric parameters of the impeller. Then author projected and checked the cross-section of impeller, drew the cylindrical blade using methods of grid squareconformal transformation. On the basis of constant velocity moment, author calculated parameters of cross-section of volute using digital integral method. Author also drew the spiral curve and diffuser of volute casing. Finally, the structural of the pump was designed and assembly ponent graphics were drew. In addition, this program has been checked strength of the pump shaft. Key words : centrifugal pumps ; impeller ; volute casing ; hydra