环形流道叠片过滤器水头损失和过滤性能试验研究  

Enhanced experimental study on the head loss and filtration performance of annular flow disc filter

作　　者：李路明 朱德兰[2,3] 张锐 郑长娟 赵泽晋 洪明[1] KHUDAYBERDI Nazarov 柳昌新 LI Luming;ZHU Delan;ZHANG Rui;ZHENG Changjuan;ZHAO Zejin;HONG Ming;KHUDAYBERDI Nazarov;LIU Changxin(College of Hydraulic and Civil Engineering,Xinjiang Agricultural University,Urumqi 830091 China;College of Water Resources and Architectural Engineering,Northwest A&F University,Yangling 712100,China;Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas,Ministry of Education,Northeast A&F University,Yangling 712100,China;College of Agrobiology,Tashkent State Agrarian University,Tashkent 100140,Uzbekistan)

机构地区：[1]新疆农业大学水利与土木工程学院,乌鲁木齐830091 [2]西北农林科技大学水利与建筑工程学院,杨凌712100 [3]西北农林科技大学旱区农业水土工程教育部重点实验室,杨凌712100 [4]塔什干国立农业大学农业生物学学院,塔什干100140,乌兹别克斯坦

出　　处：《农业工程学报》2024年第17期140-148,共9页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家重点研发计划项目(2022YFD1900400-4);新疆维吾尔自治区重点研发计划项目(2022B02011-1)。

摘　　要：为探究直线形流道和环形流道叠片过滤器对水中泥沙的过滤能力,首先通过室内试验,测试两种过滤器在4种沙粒级配中值粒径(106、121、126和165μm)、3种含沙量(0.10、0.15和0.20 g/L)和5种进口流量(1.5、2.0、2.5、3.0和3.5 m3/h)下的水头损失和过滤性能,然后以过滤器水头损失、堵塞均匀度、拦沙量、拦截泥沙粒径分布等作为评价指标,使用熵权法优选叠片结构参数。结果表明:清水条件下,环形流道叠片过滤器水头损失小于直线形流道叠片过滤器。含沙水条件下,直线形流道的叠片过滤器水头损失达到8 m时间较环形流道叠片过滤器延长10倍,且水头损失降幅最大达到52.5%,总拦沙量最大提高6.3%,中值粒径大于110μm的配沙,平均拦沙量提高0.22%。该研究提出的环形流道可替代传统的直线形流道,在不降低过滤能力的前提下减小过滤器水头损失,延长反冲洗周期。As a three-dimensional flow channel,the laminated filter has a complex structure,and it is easy to appear phenomena such as too short blocking time and increasing head loss caused by sand interception in the operation process.According to the relationship between head loss and cross-sectional area,an annular flow channel laminated filter was proposed.The circumferential flow channel was added on the lamination surface,which increased the flow direction of the flow channel and played the role of dividing the radial flow channel,achieving the purpose of hierarchical multi-layer filtration in the lamination and improving the number of available flow channels.In order to explore the advantages and disadvantages of the linear flow channel and annular flow channel laminated filter for irrigation water filtration capacity.Through indoor comparative experiments,120 mesh laminated filter,namely the filter particle size of 125μm was used to test the head loss and filtration performance of the two filters under four kinds of sand grading median particle size(106,121,126 and 165μm),three kinds of sediment content(0.10,0.15 and 0.2 g/L)and five kinds of inlet flow(1.5,2.0,2.5,3.0 and 3.5 m3/h),a total of 60 groups of tests.The dependent variables were the head loss,the sediment retention capacity and the median particle size of the interception,and the independent variables were the inlet flow,the sediment concentration and the median particle size of the inlet.The evaluation indexes were the head loss,the plugging uniformity,the sediment retention capacity and the particle size distribution of the interception sediment.The multiple regression equation was established to verify the correlation between the head loss and the filtration capacity.The entropy weight method was used to determine the optimal lamination of the head loss and the filtration capacity.The results show that:under the condition of clear water,the maximum flow head loss of the annular flow laminated filter is 9.1%lower than that of the trapezoidal linear

关 键 词：灌溉 叠片过滤器 环形流道 拦沙能力 水头损失 反冲洗周期 

分 类 号：S275.6[农业科学—农业水土工程]