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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。
Recommended a load light, specifically for the runner import flow of energy to adapt to pump station to transform a variety of needs of the front guide wheel. The structure and principle of the guide wheel, the design of the guide wheel and the supporting methods are introduced, and the typical engineering examples are also analyzed. It is suitable for the technical reconstruction of large and medium vertical axial-flow pump stations with severe cavitation, severe vibration and noise or need to increase flow and lift.