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叠片过滤器水力和过滤性能综合评价方法研究
S275.6; 为建立叠片过滤器过滤性能综合评价方法,以5种常见叠片过滤器为研究对象,对不同进水含沙量(0.02%、0.03%和0.04%)与过滤流量(25、30、35 m3/h)条件下叠片过滤器的水力性能和过滤性能开展试验研究.根据不同工况下叠片过滤器的堵塞均匀度、周期拦沙量以及拦截泥沙中值粒径,采用逐步回归分析、主成分分析方法,建立不同单项性能指标与6项叠片结构参数(叠片厚度、叠片片数、叠片沟槽长度、叠片沟槽数、叠片沟槽外截面三角形顶角、叠片沟槽外截面三角形高)间的多元线性回归方程,并采用直接加权法建立叠片过滤器性能的综合评价函数.结果表明,叠片结构尺寸参数均对过滤器性能有一定的影响,所建...
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| Published in | 农业工程学报 Vol. 35; no. 19; pp. 134 - 141 |
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| Main Authors | , , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
中国农业大学水利与土木工程学院,北京,100083
01.10.2019
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1002-6819 |
| DOI | 10.11975/j.issn.1002-6819.2019.19.016 |
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| Abstract | S275.6; 为建立叠片过滤器过滤性能综合评价方法,以5种常见叠片过滤器为研究对象,对不同进水含沙量(0.02%、0.03%和0.04%)与过滤流量(25、30、35 m3/h)条件下叠片过滤器的水力性能和过滤性能开展试验研究.根据不同工况下叠片过滤器的堵塞均匀度、周期拦沙量以及拦截泥沙中值粒径,采用逐步回归分析、主成分分析方法,建立不同单项性能指标与6项叠片结构参数(叠片厚度、叠片片数、叠片沟槽长度、叠片沟槽数、叠片沟槽外截面三角形顶角、叠片沟槽外截面三角形高)间的多元线性回归方程,并采用直接加权法建立叠片过滤器性能的综合评价函数.结果表明,叠片结构尺寸参数均对过滤器性能有一定的影响,所建立的评价函数对叠片过滤器I~V的评价值依次为7.22、7.08、7.88、8.63以及3.11,该评价函数可以全面、合理地对叠片过滤器综合性能进行评价和对比.该评价方法不仅能用于对叠片过滤器性能进行评测,还能为改进叠片结构尺寸、进一步优化过滤器性能提供参考. |
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| AbstractList | S275.6; 为建立叠片过滤器过滤性能综合评价方法,以5种常见叠片过滤器为研究对象,对不同进水含沙量(0.02%、0.03%和0.04%)与过滤流量(25、30、35 m3/h)条件下叠片过滤器的水力性能和过滤性能开展试验研究.根据不同工况下叠片过滤器的堵塞均匀度、周期拦沙量以及拦截泥沙中值粒径,采用逐步回归分析、主成分分析方法,建立不同单项性能指标与6项叠片结构参数(叠片厚度、叠片片数、叠片沟槽长度、叠片沟槽数、叠片沟槽外截面三角形顶角、叠片沟槽外截面三角形高)间的多元线性回归方程,并采用直接加权法建立叠片过滤器性能的综合评价函数.结果表明,叠片结构尺寸参数均对过滤器性能有一定的影响,所建立的评价函数对叠片过滤器I~V的评价值依次为7.22、7.08、7.88、8.63以及3.11,该评价函数可以全面、合理地对叠片过滤器综合性能进行评价和对比.该评价方法不仅能用于对叠片过滤器性能进行评测,还能为改进叠片结构尺寸、进一步优化过滤器性能提供参考. |
| Abstract_FL | Laminated filter has the characteristics of screen filter and sand filter, and can achieve three-dimensional filtration. The structure size of laminated filter is the most important parameter affecting the filter performance. In this study, we established a comprehensive evaluation method of laminated filter performance. Experiment was carried out at Tongzhou Test Station of China Agricultural University. A total of 5 kinds of laminated filters commonly used were selected. The hydraulic and filtration perfor-mance of laminated filters were tested under different sediment concentration (0.02%, 0.03% and 0.04%) and flow rate (25, 30, 35 m3/h). Dynamic change of head loss with time, clogging uniformity index, amount of intercepting sediment and median parti-cle size of intercepted sediment were analyzed. Based on the performance test, the 3 single performance indices (amount of inter-cepting sediment, median particle size of intercepted sediment and clogging uniformity index) related to the size parameters of laminates were selected through correlation analysis. By means of stepwise regression analysis and principal component analysis, the multivariate linear regression equations between 3 single performance indices and 6 laminated structural parameters (single laminate thickness, the number of laminations, length of the flow channel, the number of flow channels, the apex angle of triangle outside flow channel, the height of triangle outer section of flow channel ) were established respectively. And the regression equa-tion of 3 single performance indices was used to establish the comprehensive evaluation function of laminated filter performance by direct weighting method. The results showed that there were great differences among the 5 laminated filters in head loss, amount of intercepting sediment, median particle size of intercepted sediment and clogging uniformity index. The evaluation val-ue of comprehensive evaluative function established in this paper for 5 kinds of laminated filters was ordered by filter V(3.11), smaller than filter II(7.08), filter I(7.22), filter III(7.88) and filter IV(8.63). The smaller evaluation value indicated better compre-hensive performance of laminated filters. According to the analysis of the test data, the evaluation results were in line with the ac-tual situation, and could comprehensively and reasonably evaluate and compare the performances of laminated filters. In addition, the numerical value of the index also reflected the difference of the structure and size of the 5 kinds of laminated filters, which showed difference in clogging uniformity index, amount of intercepting sediment and median particle size of intercepted sedi-ment. According to the design requirements of laminated filters, there was a certain constraint relationship between the structural size parameters of laminated filters. It was difficult to improve the hydraulic performance and sediment disposal capacity of the filter at the same time only by changing the value of a certain parameter. Therefore, the geometric structure and size of laminated filter should be considered comprehensively in order to optimize some performance parameters of laminated filter. This evalua-tion method cannot only be used to assess performance of laminated filter, but also provide information for improving the size of laminated filter structure and further optimizing the performance of filter. |
| Author | 任树梅 杨培岭 王枭 刘伟杰 鲁萍 |
| AuthorAffiliation | 中国农业大学水利与土木工程学院,北京,100083 |
| AuthorAffiliation_xml | – name: 中国农业大学水利与土木工程学院,北京,100083 |
| Author_FL | Lu Ping Wang Xiao Liu Weijie Yang Peiling Ren Shumei |
| Author_FL_xml | – sequence: 1 fullname: Yang Peiling – sequence: 2 fullname: Lu Ping – sequence: 3 fullname: Ren Shumei – sequence: 4 fullname: Wang Xiao – sequence: 5 fullname: Liu Weijie |
| Author_xml | – sequence: 1 fullname: 杨培岭 – sequence: 2 fullname: 鲁萍 – sequence: 3 fullname: 任树梅 – sequence: 4 fullname: 王枭 – sequence: 5 fullname: 刘伟杰 |
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| Keywords | evaluation 过滤器 堵塞 评价 lamination clogging uniformity filters 叠片 均匀度 |
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| Title | 叠片过滤器水力和过滤性能综合评价方法研究 |
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