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一、前言兴建在我国黄河和其他多泥沙河流上的水电站和电灌站,由于河流泥沙含量很大,水轮机、水泵过流部件磨损十分严重。这不但造成检修频繁,而且影响供电供水,对工农业发展影响很大。如黄河上的夹马口电灌站,年平均含沙量32公斤/立方米,最大含沙量700公斤/立方米,其水泵寿命,汛期只有500小时,一般情况也只有800小时,在缺乏备件情况下,要经过四次修理,才能勉强运行2,000小时,
I. INTRODUCTION Hydropower stations and electric pumping stations built on the Yellow River and other sediment-laden rivers in China are subject to very serious wear and tear due to the large amount of sediment in rivers and water pumps. This not only caused frequent maintenance but also affected the supply and supply of water and had a great impact on the development of industry and agriculture. Such as the Yellow River on the mouth of the mouth filling station, the average annual sediment concentration of 32 kg / m3, the maximum sediment concentration of 700 kg / m3, the pump life, flood season only 500 hours, the general situation is only 800 hours in the absence of spare parts Under the circumstances, it will take only four repairs to run barely 2,000 hours,