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管路效率是指装置实际扬程与水泵扬程之比的百分数,它的大小直接影响到泵站总装置效率,反映了泵站管路配套的科学性。最近笔者对沂南县十处扬程15米以上电灌站进行装置效率调查时发现,管路效率达85％以上者占调查数的60％,远低于95％(参照江苏省水利厅编的《泵站技术规范讲义》)。提高管路效率,泵站装置效率就随之提高,从而降低排灌费用。在一定流量下,水头损失与管径、管长、管材及其管路形状等因素有关,管路效率的高低受上述因素的影响而变化。
Pipeline efficiency refers to the actual head of the device and the pump head of the percentage, its size directly affects the efficiency of the total pumping station equipment, reflecting the pump station supporting the scientific. Recently, I Yinan County, ten lifts 15 meters above the power station survey of installation efficiency found that the pipeline efficiency of 85% or more accounted for 60% of the survey, well below 95% (refer to the Jiangsu Provincial Department of Water Resources compiled “ Pumping station technical specifications handouts ”). Improve the pipeline efficiency, pump station device efficiency will be increased, thus reducing irrigation and drainage costs. Under a certain flow rate, head loss and pipe diameter, pipe length, pipe and pipe shape and other factors, the level of pipeline efficiency by the above factors change.