OALib Journal期刊
额定压力及低压下内镶片式滴头抗堵塞性能试验
Keywords: 灌水器 ,低压 ,抗堵塞性能
Abstract:
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0.6mm时滴头将获得较好的抗堵塞性能，但在0.04MPa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0.10MPa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0.04MPa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。
References
[1] 王冬梅,迷宫迷宫滴头流道结构形式和尺寸对水力及抗堵塞性能的影响,北京:中国农业大学,2007. [2] 王建东 滴头水力性能与抗堵塞性能试验研究 [D].2004 [3] Li Guangyong;Wang Jiandong;Alam M,Influence of geometrical parameters of labyrinth f low path of drip emitters on hydraulic and anti-clogging performance,TRANSACTIONS OF THE ASABE,2006(3). [4] Benham B;Ross B,Filtration,treatment and maintenance considerations for micro-irrigation systems,Virginia Cooperation Extension,2002. [5] 喻黎明;吴普特;牛文全.迷宫流道内固体颗粒运动的CFD模拟及PIV验证[J].农业机械学报,2009(5) [6] 牛文全;喻黎明;吴普特.迷宫流道转角对灌水器抗堵塞性能的影响[J].农业机械学报,2009(9) [7] 顾烈烽,滴灌工程设计图集,北京:水利电力出版社,2005. [8] Hills D J;Brenes M J,Micro-irrigation of wastewater effluent using drip tape,Applied Engineering in Agriculture,2000(3). [9] Jackson R C;Kay M G,Use of pulse irrigation for reducing clogging problems in trickle emitters,Journal of Agricultural Engineering Research,1987(8). [10] ,ISO/TC23/SC18/WG5N4 Clogging test methods for emitters,2003. [11] 傅琳;董文楚;郑耀泉,微灌工程技术指南,北京:水利电力出版社,1988. [12] K M Djamarani,Characterization of particle size based on fine and coarse fractions,Powder Technology？ ,1997, 93. [13] Terence Allen,Particle size measurement.Powder technology series,New York:Chapman and Hall,1981. [14] 穆乃君;张昕;李光永.内镶片式齿型迷宫滴头抗堵塞试验研究[J].农业工程学报,2007(8) [15] Sietan Chieng;Ghaemi Ali A,Uniformity in a micro-irrigation with partially clogged emitters,2003.
Full-Text
Contact Us
service@oalib.com
QQ:3279437679
WhatsApp +8615387084133
