压力补偿式灌水器水力性能及抗堵塞性能试验研究  

Study on hydraulic performance and anti-clogging performance of pressure compensating emitters

作　　者：张桂林 喻黎明[1] 李莎莎 苏倩 周赟 崔宁博[3] 余兴娇 ZHANG Guilin;YU Liming;LI Shasha;SU Qian;ZHOU Bin;CUI Ningbo;YU Xingjiao(College of Modern Agricultural Engineering,Kunming University of Technology,Kunming,Yunnan 650500,China;YCIC Ecological Environment Engineering Co.,Ltd,Kunming,Yunnan 650500,China;State Key Laboratory of Hydraulics and Mountain River Engineering,College of Water Resource and Hydropower,Sichuan University,Chengdu,Sichuan 610065,China)

机构地区：[1]昆明理工大学现代农业工程学院,云南昆明650500 [2]云南交投生态环境工程有限公司,云南昆明650500 [3]四川大学水力学与山区河流开发保护国家重点试验室水利水电学院,四川成都610065

出　　处：《干旱地区农业研究》2022年第6期124-131,共8页Agricultural Research in the Arid Areas

基　　金：国家自然科学基金项目(52269011)。

摘　　要：为探究压力补偿灌水器水力性能和抗堵塞性能,以华维节水科技集团有限公司生产的压力补偿灌水器为试验件,测试并评价了11种入口压力(50~350 kPa)下水力性能和3种不同浓度浑水(3、5 g·L^(-1)和7 g·L^(-1))下抗堵塞性能。结果表明:在压力补偿弹片结构和环形迷宫流道结构的共同作用下,灌水器均匀度高、压力补偿性强,流态指数0.006,补偿区间110~350 kPa,起调压力50 kPa,其相对流量随着灌水次数的增加呈波动性减小;灌水器堵塞率随灌水次数的增加呈上升趋势。经过40次灌水后,3、5、7 g·L^(-1)浓度浑水条件下,灌水器的堵塞率分别达到20.8%、29.2%和52.1%,灌水器的抗堵塞性能随浑水浓度增加而逐渐降低,当泥沙浓度为5 g·L^(-1)和7 g·L^(-1)时,堵塞率显著上升,而在泥沙浓度3 g·L^(-1)条件下,抗堵塞性能良好,且有效使用时间可延长29.73%~41.89%。研究成果对压力补偿灌水器在实际工程中的应用具有指导意义。To explore the hydraulic performance and anti-clog performance of pressure compensating emitters,the hydraulic performance of 11 types of inlet pressures(50~350 kPa)and the anti-clog performance of three different concentrations of muddy water(3,5 g·L^(-1)and 7 g·L^(-1))were tested with the pressure compensated emitters produced by Huawei Water Saving Irrigation Corp.,Ltd.The results showed that under the combined action of pressure compensation shrapnel structure and circular labyrinth runner structure,the uniformity was high pressure compensation,the flow rate index was 0.006,the compensation interval was 110~350 kPa,and the starting pressure was 50 kPa.The relative flow rate decreased with the increase of irrigation times.The clogging rate of the filler increased with the increase in the number of irrigations.After 40 irrigations,3,5,7 g·L^(-1)under the condition of muddy water,the blockage rate of the filler reached 20.8%,29.2%and 52.1%,respectively.The anti-blocking performance of the filler gradually decreased with the increase of the muddy water concentration.When the sediment concentration was 5 g·L^(-1)and 7 g·L^(-1),the clogging rate increased significantly.When the sediment concentration was 3 g·L^(-1),the anti-clogging performance was good,and the effective use time was extended by 29.73%to 41.89%.The research results provide a meaningful reference for application of pressure compensation fillers in practical engineering.

关 键 词：压力补偿灌水器 水力性能 抗堵塞 泥沙粒径 灌水次数 

分 类 号：S277.9[农业科学—农业水土工程]