双向潜水贯流泵装置内流及水力性能分析  

Analysis of internal flow and hydraulic performance of bidirectional submersible tubular pump device

作　　者：丁平 刘金生 金晓宇 葛恒军 杨帆[1] DING Ping;LIU Jinsheng;JIN Xiaoyu;GE Hengjun;YANG Fan(College of Hydraulic Science and Engineering,Yangzhou University,Yangzhou 225009,China;Yangzhou Water Conservancy Engineering Construction Center,Yangzhou 225000,China;Yangzhou Survey Design Research Institute Co.,Ltd,Yangzhou 225007,China)

机构地区：[1]扬州大学水利科学与工程学院,江苏扬州225009 [2]扬州市水利工程建设中心,江苏扬州225000 [3]扬州市勘测设计研究院有限公司,江苏扬州225007

出　　处：《南水北调与水利科技（中英文）》2023年第3期589-596,共8页South-to-North Water Transfers and Water Science & Technology

基　　金：国家自然科学基金项目(51609210);江苏省高校自然科学研究重大项目(20KJA570001);江苏省水利科技项目(2022074);扬州市科技计划项目(YZ2022192)。

摘　　要：为明晰双向运行时潜水贯流泵装置的内流特征及水力性能,采用数值模拟技术对双向潜水贯流泵装置进行全流道计算,通过模型试验验证数值计算的有效性。结果表明:在叶轮的叶片安放角0°、双侧可调导叶的叶片调节角0°且灯泡体位于内河侧时,泵装置在排涝工况时最高效率为59.29%,引水工况时泵装置最高效率为58.41%;双向运行各流量工况时,叶轮进水侧的过流结构内部流线均平顺流态较好,叶轮出流侧的过流结构内部流态相对紊乱;在双向运行时,直管式流道的出口面轴向速度分布均匀度均大于92%,速度加权平均角均大于89°,直管式进水流道为叶轮提供良好的入流速度分布;在高效工况时,泵装置出水流道进口的偏流角均低于导叶体出口;叶轮所受的轴向力均随着流量的增大而减小。研究成果为双向潜水贯流泵装置的结构优化提供了一定的参考价值。Bidirectional submersible tubular pump device is a kind of mechatronics product combining diving motor and tubular pump technology,which has the advantages of high efficiency of tubular pump device and overcomes the technology problem of cooling,heat dissipation and sealing of traditional pump motor.It is more and more applied in the water conservancy project which combines urban water-logging drainage and water environment improvement.In order to clarify the inflow characteristics and hydraulic performance of the bidirectional submersible tubular pump device,bidirectional submersible tubular pump device in Yangzhou gate pumping station was taken as the research object.Based on SST C-C turbulence model,CFD software was used for numerical calculation of flow field of the full flow channel of bidirectional submersible tubular pump device.And the effectiveness of the numerical calculation was verified by the model test.It was found that,if the the pumping station is dominated by water-logging drainage and supplemented by water diversion,the best calculation scheme of pump device is to put the bulb in front in water-logging drainage condition and put the bulb rearward in water diversion condition.Based on the calculation scheme,the maximum efficiency was 58.41%when the bidirectional submersible tubular pump device was in reverse operation and the maximum efficiency was 59.29%in forward operation at the blade angle of 0°and at the blade adjustment angle of bilateral adjustable guide vanes of 0°.In the forward and reverse operation,the flow-head curve and flow-efficiency curve of the pump device predicted by numerical simulation and model test have the same trend,and the absolute difference of efficiency is within 5%.The high efficiency condition Q=303 L/s in forward operation and Q=237 L/s in reverse operation were selected for analysis:in forward operation,the streamlines in the inlet side of straight tube flow channel,diffusion guide vane and bulb were smooth,the flow pattern was good,and no vortex and other bad f

关 键 词：潜水贯流泵 流道 流场 水力性能 数值模拟 

分 类 号：TV675[水利工程—水利水电工程]