压力补偿式灌水器制造偏差系数和抗堵性能研究  

A Study on Manufacturing Variation Coefficient and Anti-clogging Performance of Pressure Compensating Emitter

作　　者：张珍珍[1] 朱德兰[1] 张林[2] 陈俊英[1] 

机构地区：[1]西北农林科技大学水利与建筑工程学院,陕西杨凌712100 [2]西北农林科技大学中国旱区节水农业研究院,陕西杨凌712100

出　　处：《节水灌溉》2015年第11期33-36,43,共5页Water Saving Irrigation

基　　金："十二五"国家科技支撑计划(2011BAD29B00);教育部;国家外国专家局"111"计划项目(B12007);水利部"948"计划项目(201436)

摘　　要：制造偏差系数和抗堵塞性能是评价压力补偿式灌水器的重要指标。对5种压力补偿式灌水器的制造偏差和抗堵性能进行了试验测定。结果表明:在一定压力区间上,所测试的压力补偿式灌水器的制造偏差系数随着压力的增大呈U型分布,压力补偿垫片的制造偏差系数是造成这一现象的主要原因;5种灌水器在抗堵塞试验中均出现了堵塞现象;解剖堵塞的灌水器观察后发现,堵塞位置多为补偿区最小流量控制口处,可以通过较低压力冲洗缓解堵塞问题。Manufacturing variation coefficient and anti-clogging performance are two important indicators for the evaluation of pressure compensating emitter. In this paper, 5 kinds of pressure compensating emitters are tested by the experiment. The results show that; there is a distinct U shape curve relation between pressure and manufacturing variation coefficient; the manufacturing variation coefficient of gasket is the main cause of this phenomenon; every emitter in the experiment is clogged; generally, the clogging position is in the area in which the flow is controlled at the minimum flow; the dogged emitter can be washed under low. pressure.

关 键 词：灌水器 压力补偿 制造偏差系数 抗堵性能 水力性能 

分 类 号：S277.9[农业科学—农业水土工程]