锡澄运河整治工程双向竖井贯流泵站流道优化及分析

针对锡澄运河整治工程竖井贯流泵站改造的需求,对双向竖井贯流泵装置原型进行了三维定常数值模拟.以泵站竖井流道为研究对象,分析比较了5种不同的竖井流道优化方案,重点分析了正反向运行时竖井流道的内流场特征.结果表明:前移竖井段,将竖井的迎水面的尖角改成圆弧形,并以各个断面的面积作为控制参数改善流态分布较差的断面面积,有助于水...

Optimization and Analysis of the Flow Channel of Two-way Shaft Tubular Pump Stations in Xicheng Canal Regulation Project

Based on the needs of the reconstruction of the tubular pump station of the Xicheng Canal Reconstruction Project,a three-dimensional steady numerical simulation is carried out for the prototype of the two-way shaft tubular pump device.By taking the shaft flow channel of pump station as the research object,five different types of shaft flow channel optimization schemes are analyzed and compared,and the characteristics of the internal flow field of the shaft flow channel during forward and reverse operation are analyzed.The results show that:by moving the shaft section forward,changing the sharp angle of the water front of the shaft to a circular arc,and using the area of each section as a control parameter to improve the area of the section with poor flow distribution can help the water flow to diffuse smoothly and improve hydraulic performance.After optimization,in the forward running state,the efficiency is 72.40%under the design flow conditions(H=3.81 m,Q=30 m^3/s).And when H=2.61 m and Q=33 m^3/s,the efficiency reaches a maximum of 74.53%.In the reverse running state,when H=3.9 m and Q=30 m^3/s,the efficiency reaches a maximum of 60.91%,which is 1.04%higher than the original design.