| 引用本文: | 刘贞姬,石凯,李曼.立式与卧式自清洗网式过滤器水头损失试验研究[J].灌溉排水学报,2019,(12):-. |
| LIU Zhenji,SHI Kai,LI Man.立式与卧式自清洗网式过滤器水头损失试验研究[J].灌溉排水学报,2019,(12):-. |
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| 摘要: |
| 【目的】自清洗网式过滤器水头损失决定着过滤器在过滤过程中的工作效果，本次试验主要探究立式和卧式两种自清洗网式过滤器水头损失的变化规律。【方法】本次通过室内原型试验，重点展开了两种自清洗网式过滤器水头损失与进水流量，含沙量和过滤时间关系的试验探究。【结果】结果表明：两种过滤器水头损失变化规律一致，进口流量对自清洗网式过滤器水头损失的影响远大于含沙量的影响，随进口流量的增加，水头损失增加；同时，根据连续性方程及局部水头损失公式建立了进水流量与水头损失之间的数学表达模型；将试验结果进行拟合验证，结果表明：两种过滤器计算结果与试验结果误差均小于5%，且公式拟合度均可达96%以上。【结论】公式可指导自清洗网式过滤器水头损失的理论计算，同时为确定最佳预设排污压差提供理论依据，确保自清洗网式过滤器最优工况运行。 |
| 关键词: 微灌；自清洗网式过滤器；水头损失；进水流量 |
| DOI： |
| 分类号:S277.9 |
| 基金项目:国家自然科学基金项目(11662018) |
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| Experimental Study on Head Loss of Vertical and Horizontal Self-cleaning mesh filter |
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LIU Zhenji, SHI Kai, LI Man
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Shihezi University
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| Abstract: |
| 【Objective】The head loss of self-cleaning mesh filter determines the working efficiency and energy-saving effect of the mesh filter in the filtration process. This experiment mainly explored the variation law of head loss of vertical and horizontal self-cleaning mesh filter.【Method】Through the indoor prototype test, this paper focused on the experimental research on the relationship between head loss, inflow and sediment concentration of two self-cleaning mesh filter.【Result】The results show that the inlet flow is an important factor affecting the head loss of the two filters and the head loss increases with the increase of inlet flow. At the same time, according to local head loss formula and continuity equation, the mathematical expression model between head loss and inflow is established. The experimental results are verified by fitting. The results show that the error between the calculated results and the experimental results is less than 10% and the fitting degree of the formula can reach more than 90%.【Conclusion】The formula can guide the theoretical calculation of the head loss of the self-cleaning Wire mesh filter and also serve as the theoretical basis for determining the optimal preset pressure difference of sewage discharge to ensure the operation of the self-cleaning Wire mesh filter the optimal conditions. |
| Key words: SMicro irrigation; Self-cleaning mesh filter; Head loss; Inflow |
