Hydraulic geometric optimization on stagnating flow at the inlet of main pipe of underground pumping station
Hydraulic geometric optimization on stagnating flow at the inlet of main pipe of underground pumping station
复制标题
地下泵站主管入口滞流水力几何优化
DOI：
10.1088/1755-1315/1079/1/012002
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发表时间：
2022-09
期刊：
影响因子：
--
通讯作者：
Zhang Shanghong
中科院分区：
文献类型：
--
作者：
Guo Miao;Yao Kaiwen;Zhang Shanghong
摘要地下泵站在许多重要领域有着广泛的应用。然而，由于主泵进水口与主管道交界处的几何坡度较大，造成的滞流不仅使整个泵站的性能恶化，而且对泵站的安全性和运行稳定性提出了挑战。建立了相关水力现象的数值模型，并与试验结果进行了对比，验证了数值模型的有效性和准确性。仿真结果表明，干管入口处0.10D(干管内径)局部圆整的水力几何优化方案对地下泵站的水力效率和运行稳定性具有最好的效果。研究结果可为相关领域的地下泵站设计和水力线形优化提供参考。
Abstract The underground pumping station is widely used in many important fields. However, the stagnating flow caused by the sharp geometric gradient at the interface between the primary pump intake and the main pipeline not only causes the performance deteriorations of the whole pump station but also leads to safety and operational stability challenges. In this paper, the numerical model of the related hydraulic phenomena is presented, moreover, the effectiveness and accuracy of the numerical model are verified by comparing it with the experimental results. The simulation results indicate that the hydraulic geometry optimization scheme at the inlet of the main pipe with 0.10 D (inner diameter of the main pipe) local rounding contributes the best effect on the hydraulic efficiency and operation stability of underground pump stations. The results may give a reference for the design of underground pump stations and the optimization of hydraulic geometry in related fields.
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