基于CFD技术的侧向进水回流泵站优化设计  

Optimal design of side inflow return pumping station basedon CFD technology

作　　者：袁连冲 杨陈 陈斌 张华 顾玉中 YUAN Lianchong;YANG Chen;CHEN Bin;ZHANG Hua;GU Yuzhong(The Eastern Route of South to North Water Diversion,Jiangsu Water Resource Co.,Ltd.,Nanjing 210029,China;Lanshen Co.,Ltd.,Nanjing 211500,China;Nanjing Hegong Intelligent Environmental Protection Research Institute Co.,Ltd.,Nanjing 211500,China)

机构地区：[1]南水北调东线江苏水源有限责任公司,江苏南京210029 [2]蓝深集团股份有限公司,江苏南京211500 [3]南京合工智能环保研究院有限公司,江苏南京211500

出　　处：《江苏水利》2022年第1期1-4,共4页Jiangsu Water Resources

基　　金：江苏省水利科技项目(2019053)。

摘　　要：以某污泥回流泵站为例,针对其侧向进水结构带来的不良流态和水泵运行的安全问题,进行优化设计研究。基于Star ccm+软件平台,利用CFD技术对两种簸箕型流道下的流场进行数值模拟。结果表明:采用方案1隔墙式的簸箕型流道时,3台回流泵流量不均,存在抢水现象,并且易导致污泥沉降,沉降区集中在隔墙后方的池底死角;采用方案2的开式簸箕型流道时,3台回流泵流量较为均匀,且运行稳定,最高效率可达70%,缺点在于施工难度大和施工成本高;最终提出了采用带有斜坡的隔墙式簸箕型流道,同时将3号泵作为备用泵使用,最终方案有效缓解了隔墙后方的沉降现象,并在一定程度上改善了回流泵运行的稳定性,研究结果对该类工程具有一定参考和指导意义。Taking a sludge return pumping station as an example,the optimal design is studied for the adverse flow regime and the problems of the pump operation safety caused by the side inflow structure.Based on the Star CCM+software platform,CFD technology was used to simulate the flow field under the two dustpan flow channels.The results show that:when the partition wall dustpan type flow channel of scheme 1 is adopted,the flow rate of the three reflux pumps is uneven,there is water grabbing phenomenon,and it is easy to cause sludge settlement,and the settlement area is concentrated in the dead corner of the bottom of the pool behind the partition wall.When the open dustpan type flow channel of scheme 2 is adopted,the flow rate of the three reflux pumps is more uniform,and the operation is stable,the highest efficiency can reach 70%.But The disadvantages of the scheme 2 are the construction difficulty and high construction cost.Finally,the wall type dustpan type flow channel with slope was proposed,and the no.3 pump was used as the standby pump.The final scheme effectively alleviated the settlement phenomenon behind the partition wall,and improved the stability of reflux pump operation to a certain extent.The research results provide certain reference and guiding significance for this kind of projects.

关 键 词：泵站 侧向进水 数值模拟 流态分析 污泥沉降 

分 类 号：TV675[水利工程—水利水电工程]