水利学报2017，Vol.48Issue(1)：113-122,10.DOI:10.13243/j.cnki.slxb.20160667
用于确定双吸离心泵Suter曲线的三维内特性法研究
Study on three-dimensional internal characteristics method of Suter curves for double-suction centrifugal pump
摘要
Abstract
The Suter curves of pump are the primary parameters for water hammer analysis in a pump station.The existing measurement method to obtain the Suter curves of double-suction centrifugal pump has the characteristics of high difficulty and cost,and the other method of indirect interpolating estimation has the low accuracy performance.In order to get the Suter curves of double-suction centrifugal pump quickly and accurately,a three-dimensional internal characteristics method is presented based on computational fluid dynamics (CFD) technology.This method includes three-dimensional modelling,setting of operation conditions,numerical simulation on flow field and transformation of results.The core of this method is that the relationship among flow discharge,speed,head and torque is calculated accurately by CFD technology in pump operation condition,turbine operation condition,reverse pump operation condition,reverse turbine operation condition and four brake operation conditions.It is indicated that average accuracy of Wh(x) and Wb(x) are improved by 39.2％ and 26.3％ respectively by means of the proposed three-dimensional internal characteristics method,compared with interpolating estimation method.Moreover,the predicted maximum pressure is reduced by 15.0％,the pipeline scope of vapour pressure occurrences is narrowed by 81.4％,the resulted maximum reverse discharge through pump is increased by 11.9％,and the maximum reverse rotating speed is decreased by 6.1％.This method could be used as a new approach to improve the accuracy of water hammer analysis in a double-suction centrifugal pump station.关键词
泵站/双吸离心泵/水锤/Suter曲线/三维内特性法Key words
pump station/double-suction centrifugal pump/water hammer/Suter curves/three-dimensional internal characteristics method分类
建筑与水利引用本文复制引用
王玲,黎珉,王福军,王家斌,姚春光,于泳水..用于确定双吸离心泵Suter曲线的三维内特性法研究[J].水利学报,2017,48(1):113-122,10.基金项目
国家自然科学基金项目(51321001) （51321001）
“十二五”国家科技支撑计划项目(2015BAD20B01) （2015BAD20B01）
