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对于一般中小型排灌站进行很精确的计算,显得过于繁琐;而采用一些经验公式进行速算,既方便省力,又能基本满足排灌站规划、设计、选型、配套的要求。特简介如下: 一、根据灌区面积,粗算需要的水泵流量所需水泵流量(米~3/小时)=灌区面积(亩)÷轮灌天数÷水泵工作时间利用率上式中的轮灌天数,是指灌水1市寸深能维持作物所需水量的天数,它与土质有关,与灌区类别也有关:水田是3～5天,旱地是7～10天。水泵工作时间利用率系指水泵每天抽水时间(小时)与24小时的比值。
For a very small and medium-sized irrigation and drainage pumping stations, the calculation is very complicated; while some empirical formulas are used to calculate the speed, which is convenient and labor-saving, and can basically meet the planning, design, selection and matching requirements of irrigation and drainage stations. Brief introduction is as follows: 1, according to the irrigated area, rough calculation required pump flow required pump flow (m ~ 3 / h) = irrigated area (mu) ÷ turn irrigation days ÷ pump working hours utilization rate of the above irrigation days , Refers to the number of days of irrigation in a city can maintain the required amount of water depth of the crop, which is related to soil quality and irrigation areas are also related to: paddy field is 3 to 5 days, dry land is 7 to 10 days. Pump work time utilization refers to the pump pumping time per day (hours) and 24 hours ratio.