基于卷盘式喷灌机的低压双喷枪喷洒水力特征研究  

Spraying Hydraulic Performance of Double Travelling Rain Guns for Hose Reel Irrigator under Low Pressure

作　　者：赵海青 吴普特[1,2] 朱德兰[1,2] 张凯 冯英俊 谭志翔 ZHAO Hai qing;WU Pu-te;ZHU De-lan;ZHANG Kai;FENG Ying-jun;TAN Zhi-xiang(Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas,Ministry of Education, Northwest A & F University, Yangling 712100, Shaanxi, China;College of Water Resources and Architectural Engineering, Northwest A& F University, Yangling 712100, Shaanxi, China)

机构地区：[1]西北农林科技大学旱区农业水土工程教育部重点实验室,陕西杨凌712100 [2]西北农林科技大学水利与建筑工程学院,陕西杨凌712100

出　　处：《节水灌溉》2019年第6期6-9,13,共5页Water Saving Irrigation

基　　金：“十二五”国家科技支撑计划(2015BAD22B01-02);杨凌示范区产学研用协同创新重大项目(2017CXY-09);国家外国专家局“111”计划项目(B12007)

摘　　要：针对卷盘式喷灌机配备中高压大流量喷枪导致的能源消耗问题,基于HY50叶轮式喷枪在低压条件下的移动水量分布特性,将两个HY50叶轮式喷枪水量分布曲线以12m喷枪间距进行组合叠加,使其在较低工作压力下喷洒,但不降低喷洒宽度,以达到降低能耗、提高生产效率的目的。研究发现,随着工作压力的增加,双喷枪喷洒幅宽、喷灌水深均随之增加,同时,双喷枪移动水量分布形式逐渐趋向“三角形”,有利于多喷枪组合喷洒;并对12m低压双喷枪在0.15、0.25MPa工作压力下的水力性能进行了田间试验,12m双喷枪的田间试验结果与计算值最大偏差不大于11.62%。双喷枪基本达到了降压不降喷洒域的目的,对于低压喷灌设备的研究具有一定参考意义。In view of the energy consumption caused by the medium-high pressure and large-flow sprinkler gun of the Hose reel irrigator, this paper combines the water distribution curves of two HY50 guns with a 12 m gun spaces based on the moving water distribution characteristics of the HY50 gun under low pressure conditions. The combination enables double travelling rain guns to be sprayed at low working pressure without reducing the spray width, so as to reduce energy consumption and improve production efficiency. It was found that the spray width and sprinkler depth of the double travelling rain guns increased with the increase of working pressure. At the same time, the distribution pattern of the moving water distribution of the double travelling rain guns gradually changed to “triangle”, which was beneficial to the combined spray of multiple rain guns;The hydraulic performance of the double travelling rain guns under the working pressure of 0.15 and 0.25 MPa was tested in the field. The maximum deviation between the field test result and the calculated value of the 12 m double travelling rain guns was less than 11.62%.To a certain extent, the double travelling rain guns could achieve the purpose of reducing pressure and not reducing the spray area, and it also had certain reference significance for the research of sprinkler irrigation equipment under low pressure.

关 键 词：卷盘式喷灌机 低压 双喷枪 水力性能 能源消耗 生产效率 

分 类 号：S275.5[农业科学—农业水土工程]