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，有助于水流平稳扩散，提高水力性能。优化后，正向运行时，设计流量工况（H=3.81 m，Q=30 m3/s）下效率为72.40%，当H=2.61 m，Q=33 m3/s时，效率达到最大值74.53%；反向运行时，当H=3.9 m，Q=30 m3时，效率达到最大值60.91%，相比原设计方案提高1.04%。
Abstract
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 m3/s). And when H=2.61 m and Q=33 m3/s, the efficiency reaches a maximum of 74.53%. In the reverse running state, when H=3.9 m and Q=30 m3/s, the efficiency reaches a maximum of 60.91%, which is 1.04% higher than the original design.
关键词
竖井贯流泵站流道 /
数值模拟 /
优化设计
{{custom_keyword}} /
Key words
flow channel of shaft tubular pump station /
numerical simulation /
optimized design
{{custom_keyword}} /
基金
国家自然科学基金项目;扬州市校科技合作资金项目;江苏省科协青年科技人才托举工程项目;江苏省创新能力建设计划项目
{{custom_fund}}
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
[1]张付林,郑源,孙奥冉,等.超低扬程贯流泵模型试验的压力脉动研究[J].中国农村水利水电,2017(11):173-176.
[2]戴景,李彦军,袁寿其,等.前导叶叶片位置对灯泡贯流泵水力性能的影响[J].排灌机械工程学报,2017,35(9):761-766.
[3]唐学林,陈雄盛,王福军,等.灯泡式贯流泵内湍流流动数值模拟和性能预测[J].排灌机械工程学报,2013,31(12):1 025-1 029.
[4]ZHU H G, ZHANG R T. Numerical simulation of internal flow and performance prediction of tubular pump with adjustable guide vanes[J]. Advances in Mechanical Engineering,2014(6):119-127.
[5]XIN H R, ZHANG M Y. Three-dimensional CFD simulation for water-lubricated guide bearing of large tubular pump[J]. Applied Mechanics and Materials,2014(3 296):160-166.
[6]ZHANG L J, WANG S, YIN G J. Numerical investigation of the FSI characteristics in a tubular pump[J]. Mathematical Problems in Engineering,2017(17):1-9.
[7]石丽建,刘新泉,汤方平,等.双向竖井贯流泵装置优化设计与试验[J]. 农业机械学报,2016,47(12):85-91.
[8]黄毅,杨雪林.大型竖井贯流泵装置在南水北调邳州站的首次应用[C]∥中国水利学会2016学术年会论文集.南京:河海大学出版,2016：1 219-1 222.
[9]孟凡,裴吉,李彦军,等.导叶位置对双向竖井贯流泵装置水力性能的影响[J].农业机械学报,2017,48(2):135-140.
[10]陈加琦, 朱泉荣, 苏志敏, 等. 基于特征尺寸规则化的竖井贯流泵装置研究[J]. 水力发电学报, 2019, 38(2):101-111.
[11]杨帆,刘超,汤方平,等.竖井型线演变及对泵装置水力性能的影响分析[J].应用基础与工程科学学报, 2014, 22(1):129-138.
[12]KAN K, ZHENG Y, FU S F, et al. Dynamic stress of impeller blade of shaft extension tubular pump device based on bidirectional fluid-structure interaction[J]. Journal of Mechanical Science and Technology, 2017,31(4):1 561-1 568.
[13]谢伟东,蒋小欣,刘铭峰,等.竖井式贯流泵装置设计[J].排灌机械,2005(1):10-12.
PDF(15030 KB)
鄂公网安备 42010602001274号 鄂ICP备14015464号-1