井式泵站进水流道流动特性及消涡方法  

Flow Characteristics and Vortex Elimination Measures of Inlet Channel in Well Type Pumping Station

作　　者：陈天宇 傅宗甫[1] 吕家才[1] CHEN Tian-yu;FU Zong-fu;LÜJia-cai(College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210024,Jiangsu Province,)

机构地区：[1]河海大学水利水电学院,江苏南京210024

出　　处：《中国农村水利水电》2025年第4期45-51,共7页China Rural Water and Hydropower

摘　　要：井式泵站是一种新型的泵站布置方式,水泵沿内外工作井中外井的顶板周向布置,与传统泵站相比水泵进流条件复杂。基于SSTk-ω湍流模型进行数值模拟,结合物理模型,对无消涡和不同消涡措施水泵进口周围流态进行了分析,并选择了合适的消涡措施。结果显示,无消涡工况下,进水口附近会周期性产生附顶漩涡,进水口内外侧水流不对称是导致偏流的重要原因。采用的4种消涡方案均能在不同程度上改善流态,其中设置水平盖板的方式改善效果最好,喇叭口附近流态均匀,进水条件良好。Well-type pumping station is a new type of pumping station layout,in which the pumps are arranged along the circumference of the top slab of the outer working wells.Compared with traditional pumping stations,the fluent conditions of the pump are more complex.Based on the SST k-ω turbulence model,numerical simulation was carried out,and combined with physical models,the flow pattern around the inlet of the pump with and without different vortex elimination measures.Furthermore,we selected appropriate vortex elimination measures was analyzed.The results show that under the condition of no vortex elimination measure,periodic top vortices will be generated near the inlet,and the asymmetry of water flow flanked the inlet is an important reason for the flow deviation.The four vortex elimination measures adopted can improve the flow state of varying degrees,among which the measure of setting a horizontal cover plate has the best improvement effect.The flow state near the bell mouth is uniform and the water inlet conditions are good.

关 键 词：井式泵站 进水流道 漩涡 数值模拟 

分 类 号：TV135[水利工程—水力学及河流动力学] TV675