大射程全射流微喷头设计与性能试验

Experimental Study on Micro Fluidic Sprinkler

利用射流附壁原理,设计一种大射程的全射流微喷头。分析了全射流微喷头旋转驱动力与射流元件作用区结构尺寸的关系,得到两种驱动力的计算公式。通过正交试验得到了最优转速、最远射程时的作用区位差、作用区长度和盖板位差的尺寸组合。对最优结构样机进行了水力性能测试,测试结果与正交试验结果一致,样机水量分布均匀,射程、水滴直径达到设计要求。

In order to enhance irrigation level, a long-range micro fluidic sprinkler was designed by adopting wall-attachment offset jet theory. The relation between rotating driving force and size of fluidic component was analyzed, and calculation formulas of two kinds of driving forces were obtained. According to the fastest rotating speed and largest range, the best geometrical size was achieved by orthogonal methodology. Hydraulic performance of the micro sprinkler was tested, and the test results were coincident with the orthogonal test results. The water distribution of the micro fluidic sprinkler is uniform, and its long range and small water drop size can meet the design requirements.