异形喷嘴变量喷头水力性能试验  

Hydraulic Performance Experiment of the Variable-rate Sprinkler with Non-circle Nozzle

作　　者：魏洋洋[1] 袁寿其[1] 李红[1] 向清江[1] 陈超[1] 

机构地区：[1]江苏大学流体机械工程技术研究中心,镇江212013

出　　处：《农业机械学报》2011年第7期70-74,共5页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家高技术研究发展计划(863计划)资助项目(2006AA100211)

摘　　要：在分析喷嘴出口前压力与喷嘴面积、射程之间关系的基础上,阐述了异形喷嘴变量喷洒喷头结构形式及工作原理。对变量喷头进行了水力性能试验,并绘制了单喷头水量分布等值线图。试验表明:异形喷嘴变量喷头运行可靠,能够实现正方形和三角形喷洒域,与圆形喷嘴的摇臂变量喷头相比其喷洒性能良好,改善了喷灌均匀性。On the basis of analyzing the relationship between pressure before the nozzle and nozzle area,radius of throw,a new type of variable-rate sprinkler was developed by using activity pieces and non-circle nozzle device on an impact sprinkler.The structure and working principles were presented.Experiment of hydraulic performances was conducted and analyzed.The water distribution isoline of single nozzle was plotted by using Matlab.Results showed that the variable-rate sprinkler with non-circle nozzle was able to operate reliably,and the triangle wetted area and square wetted area was obtained.Compared with the traditional variable-rate sprinkler,the variable-rate sprinkler with non-circle nozzle has better hydraulic performance and the spray uniformity is improved.

关 键 词：异形喷嘴 变量喷洒 水力性能 

分 类 号：S275.5[农业科学—农业水土工程]