石羊河流域井灌区管道灌溉系统优化模式研究

为了探求石羊河流域井灌区管道灌溉系统优化模式,对喷灌、滴灌、管灌等高效节水技术与变频调速技术进行配套,采用"恒压变量"研究方案对各灌溉技术间流量与压力协调进行了试验。结果表明:水泵的转速大于最低合理转速1 710 r/min时,在喷灌、滴灌、管灌3种工作条件下,水泵效率均较高,基本在高效区运行,同时也说明"恒压变量"一整套水泵调速工况点参数计算公式和计算方法正确可靠。

Research on Assembly Matching Technology of Efficient Mixed Irrigation Systems in Well Irrigation Area of Shiyang River Basin

Through matching high-effective water-saving and frequency control technology of sprinkler irrigation,drip irrigation and pipe irrigation,the paper adopted scheme of "constant variation" to study the relationship of various irrigation techniques between flow and pressure,which to search optimize mode for well irrigation area in Shiyang River basin.The results show that the efficiency of water pump is rather higher under the rotation speed of water pump as 1 710 r/min for sprinkler irrigation,drip irrigation and pipe irrigation.It’s a way to solve the contradiction of local irrigation method between the adjustment of planting structure and improving the working conditions compression equipment and irrigation equipment.In the meanwhile,it also shows that the parameter calculator formula and method about "constant variation" of whole water pump are reliable.