基于阿基米德螺旋转轮的自清洗泵前过滤器设计与试验  

Design and testing of the front filter for the self-cleaning pump based on Archimedean spiral turbine

作　　者：张金珠[1,2,3] 张栋楠 刘宁宁 李淼 王越[1,2,3] 王振华 李云霞 ZHANG Jinzhu;ZHANG Dongnan;LIU Ningning;LI Miao;WANG Yue;WANG Zhenhua;LI Yunxia(College of Water Conservancy&Architectural Engineering,Shihezi University,Shihezi,832000,China;Key Laboratory of Modern Water-Saving Irrigation of Xinjiang Production&Construction Group,Shihezi,832000,China;Laboratory of Northwest Oasis Watersaving Agriculture,Ministry of Agriculture and Rural Affairs,Shihezi,832000,China;Research Institute of Farmland Water Conservancy and Soil-fertilizer,Xinjiang Academy of Agricultural Reclamation Sciences,Shihezi,832000,China)

机构地区：[1]石河子大学水利建筑工程学院,石河子832000 [2]现代节水灌溉兵团重点实验室,石河子832000 [3]农业农村部西北绿洲节水农业重点实验室,石河子832000 [4]新疆农垦科学院农田水利与土壤肥料研究所,石河子832000

出　　处：《农业工程学报》2024年第10期76-84,共9页Transactions of the Chinese Society of Agricultural Engineering

基　　金：兵团重大科技项目(2021AA003);国家重点研发计划课题(2022YFD1900405);兵团农业GG项目。

摘　　要：为提高泵前过滤器自清洗性能,解决过滤系统频繁中断问题,该研究将阿基米德螺旋转轮应用于泵前过滤器自清洗过程,通过数值仿真与物理试验,结合相关性分析和线性回归分析,探究叶片螺距、叶片角度、叶片数量对阿基米德螺旋转轮转速的影响规律。结果表明:转轮转速随螺距的增加逐渐下降,且降低幅度逐渐上升,随叶片角度和叶片数量的增加转轮转速的提升较小且提升幅度不断减小,对转轮转速影响程度由大到小为螺距、叶片角度和叶片数量。通过TOPSIS法(technique for order preference by similarity to an ideal solution)综合评价得到最佳结构参数组合为:螺距133 mm,叶片角度90°,叶片数量1。优化后水驱式自清洗泵前过滤器开展自清洗试验,结果显示流量经过最初下降阶段后稳定在294.9~296.6 m^(3)/h区间,流量降幅仅为1.13%~1.70%,利用水力驱动阿基米德螺旋转轮带动自清洗装置的滤网清洗效果良好。研究结果可为水驱式自清洗泵前过滤器的结构设计和优化提供参考。A filter before the pump is one of the most important components in the head of the drip irrigation system.The filter before the pump can be used to preliminarily filter the irrigation water,and then reduce the damage to the pump and the working pressure of the filter system after the pump,finally extending the working duration of the filter system for stable and efficient operation of the drip irrigation system.However,most self-cleaning devices that are driven by motors cannot be interrupted in the filtration process when performing self-cleaning work,leading to the consumption of electric energy.The purpose of this study is to solve the frequent interruption of the filter system for the better self-cleaning performance of the filter before the pump.The Archimedes spiral turbine was applied to combine the hydraulic drive and self-cleaning in the selfcleaning process of the filter before the pump.A systematic investigation was made to explore the influence of blade stride,blade angle,and blade numbers on the rotation speed of Archimedes spiral turbine.A test platform was developed to evaluate the speed of Archimedes spiral turbine when the flow rate was 50-150 m^(3)/h(flow gradient was 25 m^(3)/h).At the same time,a series of simulation tests were carried out on the Archimedes spiral turbine with different parameters by computational fluid dynamics software.The experimental results show that the rotation speed of Archimedes spiral turbine gradually decreased with the increase of the blade stride(or the decrease of the number of single-blade helices),where the reduction amplitude gradually increased.There was a relatively small increase in the rotation speed of Archimedes spiral turbine,with the increase of blade angle and number of blades,whereas,the amplitude continuously decreased.The linear regression showed that the influencing level on the rotation speed was ranked in the descending order of the blade stride,blade angle and blade number.TOPSIS comprehensive evaluation showed that the optimal combination of

关 键 词：泵 数值模拟 前过滤器 自清洗 转速 阿基米德螺旋转轮 

分 类 号：S224.21[农业科学—农业机械化工程]