波动水压参数对灌水器水力性能影响试验  

Experimental study of effect of fluctuating water pressure factors on hydraulic properties of drip emitters

作　　者：刘洁[1] 王聪[1] 魏青松[1] 史玉升[1] 

机构地区：[1]华中科技大学材料成形及模具技术国家重点试验室,湖北武汉430074

出　　处：《河海大学学报（自然科学版）》2014年第4期361-366,共6页Journal of Hohai University(Natural Sciences)

基　　金：国家自然科学基金(51109087)

摘　　要：针对低压灌溉系统虽然可以节省电能但却容易发生堵塞的不利情况,将原来恒定不变的水压改变为按照一定频率和振幅波动的动态水压模式,以期增强低压运行时滴灌灌水器的抗堵塞能力。以基础水压、波幅和波动周期为变量参数来设计工作水压的波动模式,通过正交方式实施波动参数与流量特性试验,分析了3种波动参数对灌水器流量的影响规律,结果表明基础水压对灌水器流量的影响最大。Although a low-pressure irrigation system can save power energy, it is prone to clogging. In this study, the constant water pressure was changed to dynamic pressure fluctuating with a certain frequency and amplitude, in order to increase the drip emitter’ s anti-clogging capability during the runtime at a low pressure. The dynamic model of operating pressure was designed by taking the base pressure, fluctuation amplitude, and fluctuation cycle as variable parameters. With orthogonal experiments, the fluctuation parameters and flow properties were tested. The effects of three fluctuation parameters on the emitter flow were analyzed. The study results show that the water base pressure has the most significant effect on the emitter flow.

关 键 词：低压灌溉 波动水压 滴灌灌水器 灌水器水力性能 

分 类 号：S277[农业科学—农业水土工程]