低压管道灌溉系统水力性能模拟与试验研究

Simulation and Experimental Research on Hydraulic Performance of Low-pressure Pipeline Irrigation Systems

本文对低压管道灌溉系统的水力性能进行了模拟,并结合试验数据展开了分析。选取某实行全封闭式低压管轮灌的灌区作为试验对象,分别在泵站出水口等位置设置了2个流量监测点和5个压力监测点。设计4种处理,探究不同处理下灌溉系统的水力性能。试验表明,管道压力与流量的观测值与理论值基本一致,拟合程度较高,说明水力模拟方法可靠;保证出水口数量与水泵设计流量匹配,出水口采取插花编组,以及选用变频调节水泵等方式,能够提高水泵运行效率,节约运行成本。

This article simulates the hydraulic performance of low-pressure pipeline irrigation systems and analyzes them based on experimental data.Two flow monitoring points and five pressure monitoring points were set up at the pump station outlet and other locations in a fully enclosed low-pressure pipe rotation irrigation area as the experimental object.Design four treatments to explore the hydraulic performance of irrigation systems under different treatments.The experiment shows that the observed values of pipeline pressure and flow rate are basically consistent with the theoretical values,with a high degree of fitting,indicating the reliability of the hydraulic simulation method;Ensuring that the number of water outlets matches the designed flow rate of the water pump,adopting flower arrangement and selecting variable frequency adjustable water pumps can improve the efficiency of water pump operation and save operating costs.