多级斜板式水沙分离装置试验  

Experimental study on the water-sediment separator with multilevel inclined plates

作　　者：董玉萍[1] 牟献友[1] 文恒[1] 

机构地区：[1]内蒙古农业大学水利与土木建筑工程学院,内蒙古呼和浩特010018

出　　处：《水利水电科技进展》2013年第5期52-56,共5页Advances in Science and Technology of Water Resources

基　　金：国家自然科学基金(50669001)

摘　　要：采用渠化设计的方法对垂向异重流式混合流体分离鳃进行结构优化,在不同流量、不同含沙量、不同斜板间距组合条件下,对该优化的多级斜板式水沙分离装置进行了动水循环试验。试验结果表明:渠化设计后,清水流与沉降泥沙各行其道,大幅度减小了相互间的扰动;溢流泥沙中值粒径随进流流量的增大不断增大,随进流含沙量的增大逐渐减小;出流含沙量随斜板间距减小而降低;在流量为0.9 m3/h时该装置水沙分离效果最好,泥沙分离率在80%以上,最高可达到93%。Channelization design method has been employed for structural optimization of the vertical-component density flow separation devices for mixed fluids.Dynamic water cycle experiments have been conducted for the optimized watersediment separation devices with multiple inclined plates under different discharges,sediment concentrations and distances between plates.Experimental results show that mutual perturbations between clear flow and sediments are greatly reduced through a channelization design.The median size sediments of overflows are increased with an increasing discharge and decreased with an increasing sediment concentration of inflow.The sediment concentration of outflow is decreased with a decreasing distance between plates.The optimal discharge of the device is found to be 0.9m3/ h.The water-sediment separation rate is greater than 80%,and with a maxima of 93% at the optimal discharge.

关 键 词：斜板沉淀池 分离鳃 水沙分离 渠化设计 分离率 

分 类 号：TV149.2[水利工程—水力学及河流动力学]