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Position: Home > Articles > Nozzle Configuration and Software for Center Pivot Irrigation System Transactions of the Chinese Society for Agricultural Machinery 2011,42 (6) 90-94

圆形喷灌机喷头配置技术与软件研究

作  者：
严海军;姚培培;朱勇;余鹏飞
单  位：
中国农业大学水利与土木工程学院;中国农业机械化科学研究院节水灌溉工程装备中心
关键词：
圆形喷灌机;喷头配置;数学模型;水力性能;软件
摘  要：
以圆形喷灌机均匀喷灌水深为目标,建立了主输水管喷头间距不相等条件下喷头配置数学模型,提出了全部使用、不使用及部分使用压力调节器3种工况下的喷头配置技术方案,构建了基于SQL Server的圆形喷灌机低压喷头、压力调节器、机组桁架等零部件结构及性能参数数据库,并开发了可实现圆形喷灌机喷头配置和机组水力性能预测的专业软件。DYP-249型圆形喷灌机应用该软件实现了D3000喷头配置,配置的入机总流量与理论值的相对误差小于1.1%;根据配置结果进行了田间试验,结果表明沿主输水管方向的喷灌强度试验值和模拟值的变化趋势一致,因田间试验受到风速、风向、蒸发飘移和编程算法等影响,测得的喷灌均匀系数值(75.26%)低于软件模拟值(85.59%)。工程实例表明软件能够准确、快捷地完成圆形喷灌机的喷头配置,并能较好地预测机组田间水力性能。
译  名：
Nozzle Configuration and Software for Center Pivot Irrigation System
作  者：
Yan Haijun1 Yao Peipei2 Zhu Yong2 Yu Pengfei2(1.College of Water Conversancy and Civil Engineering,China Agricultural University,Beijing 100083,China2.Center for Water-saving Irrigation Equipment,Chinese Academy of Agricultural Mechanization Sciences,Beijing 100083,China)
关键词：
Center pivot irrigation system,Nozzle configuration,Mathematical model,Hydraulic performance,Software
摘  要：
In order to get uniform water distribution,nozzle size selection of low pressure sprinklers with nonuniform spacing along the center pivot main lateral was established.Three configuration methods of sprinklers equipped with,without and partly with pressure regulators were put forward,and databases on sprinklers,pressure regulators and spans were built.Software on nozzle configuration and hydraulic performance analysis of center pivot irrigation system was also developed.Nozzle package selection for DYP-249 center pivot was generated by using the developed software and a field experiment on its hydraulic performance was conducted.The results showed that the inlet flow rate by using the software for DYP-249 center pivot was very close to the theoretical value,with a relative error less than 1.1%.Both the measured and simulated application rates along the main lateral had the same change trend.Due to the wind speed,wind direction,evaporation and drift,programming algorithm etc.,the measured water distribution coefficient was 75.26%,lower than the simulated coefficient of 85.59% by this software.The practical example showed that the software could achieve quick and accurate nozzle configuration,and well predicted hydraulic performance for center pivot irrigation system.

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