额定压力及低压下内镶片式滴头抗堵塞性能试验  

Anti-clogging Performance of Dental Labyrinth Emitters under Rated Pressure and Low Operating Pressure

作　　者：马晓鹏[1] 龚时宏[1] 王建东[1] 于颖多[1] 

机构地区：[1]中国水利水电科学研究院水利研究所,北京100048

出　　处：《农业机械学报》2011年第7期86-90,134,共6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(2006AA100213);国家自然科学基金资助项目(50709045);中国水科院科研专项资助项目(节集1111)

摘　　要：依据ISO短周期滴头堵塞测试方法,测试了12种内镶片式齿型迷宫滴头在额定压力和低压情况下的抗堵塞性能。结果表明:滴头抗堵塞性能随着流道断面最小尺寸增加而提高,当滴头流道断面最小尺寸大于等于0.6 mm时滴头将获得较好的抗堵塞性能,但在0.04 MPa时滴头流道设计形式对滴头抗堵塞性能有更为明显的影响。在过滤器滤网孔径大小选择方面,压力为0.10 MPa时,可选用流道断面最小尺寸的1/5作为有效孔径,而压力为0.04 MPa时,则应按流道最小断面尺寸的1/7来选择。研究还表明,滴灌系统在低压运行时,可通过间歇灌溉的方式来预防和减少滴头的堵塞。Based on short term clogging test procedure in ISO clogging test methods for drip emitters,twelve kinds of dental labyrinth emitters were tested for anti-clogging ability under different operating pressures.The results showed that as the minimum size of labyrinth passage section increased,the anti-clogging ability of emitters was improved.When the minimum size of labyrinth passage section was greater than 0.6mm,the anti-clogging ability of emitters would be better.However,the design of labyrinth passage section showed more significant effect on the anti-clogging ability of emitters under 0.04MPa operating pressure.Aperture of the filter can select 1/5 of the effective aperture of minimum size of labyrinth passage section under 0.10MPa,and 1/7 of the minimum size of labyrinth passage section under 0.04MPa.In addition,the results also showed that intermittent irrigation could contribute to the improvement of anti-clogging performance of emitters under low operating pressure.

关 键 词：灌水器 低压 抗堵塞性能 

分 类 号：S275.6[农业科学—农业水土工程]