排灌机械工程学报2017，Vol.35Issue(9)：761-766,6.DOI:10.3969/j.issn.1674-8530.16.0135
前导叶叶片位置对灯泡贯流泵水力性能的影响
Effect of inlet guide vane position on hydraulic performance of bulb tubular pump
摘要
Abstract
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 position 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.关键词
泵站/灯泡贯流泵/导叶/水力性能Key words
pumping station/bulb tubular pump/diffuser vane/hydraulic performance分类
农业科技引用本文复制引用
戴景,李彦军,袁寿其,戴启璠,梁豪杰..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):761-766,6.基金项目
国家自然科学基金资助项目(51109096) （51109096）
江苏高校优势学科建设工程项目 （）
