【摘要】 单级双吸离心泵在中小型灌溉泵站中应用广泛,其常规选型方法以设计者自选的水泵生产厂家样本资料为基础,难以保证数据可靠、性能最优。本文基于相似理论提出一种新的选型方法,实现不依赖厂家样本资料的离心泵选型。该方法选取比转数具有代表性的6个单级双吸离心泵建立模型泵数据库,从模型泵相似参数性能曲线入手,根据曲线最优效率点推求原型泵的叶轮直径、水泵转速等参数。用Fortran和C#编程语言开发单级双吸离心泵专用选型软件。软件根据输入的泵站的扬程、流量,选出合适的模型泵,计算出原型泵的转速与叶轮直径,并绘制原型泵的特性曲线。以某灌区二级泵站数据资料进行验证,结果表明,该方法选型结果可靠,研发的选型软件具有较高的应用价值。更多还原

【Abstract】 Single-stage and double-acting centrifugal pumps are widely used in small and medium-sized irrigation pumping stations. It is difficult to assure data reliability and pump efficiency to select pumps according to data samples from a specific pump manufacturer chosen by the designer. A new method based on similarity theory is studied to deduce the rotating speed and diameter of prototype pump ’s impeller according to certain relative parameters of the model pump. At the same time,a special type of software for single-stage double-acting centrifugal pump selection is developed with Fortran and C# programming language. By typing in head and flow of certain pumping station projects,proper rotating speed and diameter of prototype can be worked out. The method turns out to be reliable according to the verification based on the data of the Second Rate Pumping Station of certain pumping stations.更多还原