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当前位置: 首页 > 文章 > 前导叶叶片位置对灯泡贯流泵水力性能的影响 排灌机械工程学报 2017 (9) 761-766
Position: Home > Articles > Effect of inlet guide vane position on hydraulic performance of bulb tubular pump Journal of Drainage and Irrigation Machinery Engineering 2017 (9) 761-766

前导叶叶片位置对灯泡贯流泵水力性能的影响

作  者：
戴景;李彦军;袁寿其;戴启璠;梁豪杰
单  位：
江苏大学国家水泵及系统工程技术研究中心;江苏省灌溉总渠管理处
关键词：
泵站;灯泡贯流泵;导叶;水力性能
摘  要：
以南水北调东线淮安三站后置灯泡贯流泵装置为研究对象,采用ANSYS CFX数值模拟方法,并通过试验进行验证,计算并分析了不同的前导叶体叶片位置对进水流道水力性能以及泵装置能量特性的影响.结果表明:前导叶叶片由原设计位置向叶轮方向移动500 mm(此时与进水流道出水断面距离为0.064 5D)之后,设计工况下泵装置的效率较原来相比提高了1.28%;同时还使得进水流道的水力损失明显下降,降低了流道损失;改善了进水流道剖面的速度分布;不同工况下进水流道出水断面的轴向速度分布均匀度与速度加权平均角的值均有显著提高,转轮室的吸入流态得到了明显的改善.前导叶叶片位置对进水流道与泵装置的影响并不是简单的线性关系,前导叶体叶片位置与叶轮之间的距离存在着最优搭配.
译  名：
Effect of inlet guide vane position on hydraulic performance of bulb tubular pump
作  者：
DAI Jing;LI Yanjun;YUAN Shouqi;DAI Qifan;LIANG Haojie;National Research Center of Pumps,Jiangsu University;Jiangsu Province General Irrigation Canal Management;
关键词：
pumping station;;bulb tubular pump;;diffuser vane;;hydraulic performance
摘  要：
The hydraulic performance of one bulb tubular pumping system in the Huai'an Third Pumping Station in South to North Water Diversion Project was simulated numerically and validated experimentally,and especially,the effects of inlet guide vane position on the performance were clarified.It was shown that the efficiency of the pumping system was improved by 1.28% at the design point when the distance was 500 mm,i.e.0.064 5D,measured from the guide vane trailing edge to the impeller blade leading edge in comparison with the original design.At the same time,the hydraulic loss in the suction channel was obviously decreased and the uniformity of velocity profile in its cross-section was improved.The uniformity of axial velocity distribution and the weighted average angle of velocity at the outlet of the guide vane were remarkably improved under various working conditions,in consequence,the flow pattern in front of the impeller became better obviously.The influence of inlet guide vane posi-tion on the flow in the suction channel and the hydraulic performance of pumping system doesn' t present a simple linear relationship,instead there exists an optimal position between the guide vane trailing edge and the impeller blade leading edge.

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