前置导轮在轴流泵站技术改造中的应用

Application of Front-Guide Impeller in the Technical Reform of Axial Flow Pumping Station

推荐一种负荷轻、专为转轮进口水流补充能量、能适应泵站改造多种需要的前置导轮。介绍了导轮的结构及作用原理、导轮的设计及配套方法，并进行典型工程实例分析。适用于汽蚀严重、振动噪音剧烈或需要增大流量和扬程的大中型立式轴流泵站的技术改造。

The light load front-guide impeller for recharging flow energy of the runner and fitting multinecessity of pumping station reform is recommended in this paper. The structure and action principle, design and form a complete set of front-guide impeller are descrided. It is fitted for technical reform of large and medium-sized vertical and axial flow pumping station of serious cavitation and shaking noise or needs for enlarging discharge and lift.