微灌用泵前微压过滤器的最佳运行工况研究  

Optimizing Operating Condition of the Filters in Micro-irrigation Pump

作　　者：陶洪飞[1,2] 沈萍萍 周洋 吴梓境 李巧 TAO Hongfei;SHEN Pingping;ZHOU Yang;WU Zijing;LI Qiao(College of Hydraulic and Civil Engineering,Xinjiang Agricultural University,Urumqi 830052,China;Xinjiang Key Laboratory of Hydraulic Engineering Security and Water Disasters Prevention,Urumqi 830052,China)

机构地区：[1]新疆农业大学水利与土木工程学院,乌鲁木齐830052 [2]新疆水利工程安全与水灾害防治重点实验室,乌鲁木齐830052

出　　处：《灌溉排水学报》2022年第6期72-79,共8页Journal of Irrigation and Drainage

基　　金：新疆维吾尔自治区创新环境(人才、基地)建设专项-“天山青年计划”项目(2019Q075);2019年度新疆维吾尔自治区人民政府公派出国留学成组配套项目。

摘　　要：【目的】探究微灌用泵前微压过滤器的最佳运行工况。【方法】以泵前微压过滤器为研究对象,以水头损失、截沙质量和总过滤效率作为考核指标,开展了进水流量、含沙量、分水器型式、滤网面积等因素的物理模型正交试验,采用极差和方差分析方法对试验结果进行处理。【结果】影响水头损失大小的因素依次排序为:进水流量、含沙量、滤网面积、分水器型式;对截沙质量影响大小依次排序为:含沙量、滤网面积、分水器型式、进水流量;对总过滤效率影响大小依次排序为:滤网面积、含沙量、分水器型式、进水流量。【结论】影响水头损失、截沙质量及总过滤效率的两个主要因素是含沙量和滤网面积;经综合分析可知最佳运行工况为:进水流量4m^(3)/h,含沙量1.5 g/L,分水器型式3型,滤网面积2060 cm^(2)。【Objective】A porous filter is often used in micro-irrigation systems to filter debris and sand particles.Its performance depends on many factors. The purpose of this paper is to present a method to optimize its operating conditions. 【Method】The studies were based on a micro-pressure filter. We took water pressure loss, sand interception rate and filtration efficiency as assessment criteria. In the experiments we measured and calculated the combined impact of inlet flow, sediment content, water-separator type, and filter area on operation of the filter. The results were processed using the analysis of range and variance. 【Result】The factors that affected the head loss of muddy water across the filter were ranked in the descending order of inlet flow > sediment content > filter area >water separator type. The factors that impacted the mass of sand trapped by the filter were ranked in the descending order of sediment content > filter area > water separator type > inlet flow rate. The factors that affected the total filtration efficiency were ranked in the descending order of filter area > sediment content > water separator type>inlet flow rate. 【Conclusion】The two factors that affected water head loss across the filter, sediment filtration and total filtration efficiency most are sediment content and filter area. Comprehensive analysis shows that the optimal operating conditions for the filter are sediment concentration 0.36 kg/m^(3), inflow rate 4 m^(3)/h, water separator type Type 3, filter area 2 060 cm^(2).

关 键 词：过滤器 微灌系统 正交设计 极差分析 方差分析 

分 类 号：S275[农业科学—农业水土工程]