流体机械2017，Vol.45Issue(7)：12-16,27,6.DOI:10.3969/j.issn.1005-0329.2017.07.003
立式轴流泵装置压力脉动特性的试验
Experimental Analysis on Pressure Fluctuation of Multiple Conditions in Axial-flow Pumping System
摘要
Abstract
In order to analyze characteristics of axial flow pump pressure fluctuation under different flow rates,seven pressure monitoring points were arranged on the pump section casing of the impeller inlet and outlet passage.The results show that the time domain diagram of pressure fluctuation of monitoring points at the impeller inlet was the normal sine shape and and the peak-peak value is much larger than the monitoring points P4 and P6.Time domains of pressure fluctuation at the impeller had four peaks and four valleys which were consistent with the number of the impeller blade.Based on the frequency domain diagram analysis, he main frequency of pressure fluctuation at the impeller inlet were all blade passing frequency and the harmonic frequency was its multiple frequency of the blade passing frequency.The fluctuation amplitude of the monitoring points of the outlet passage decreased first and then increased with the increase of the flow rate,and the amplitude of the pressure fluctuation is the smallest under the optimal operational condition.The regularity of the pressure fluctuation of the monitoring points P4,P6 is not found.关键词
轴流泵/泵装置/压力脉动/模型试验Key words
axial flow pump/pumping system/pressure fluctuation/model test分类
机械制造引用本文复制引用
赵浩儒,杨帆,吴俊欣,陈世杰,武蒙..立式轴流泵装置压力脉动特性的试验[J].流体机械,2017,45(7):12-16,27,6.基金项目
国家自然科学基金资助项目(51609210) （51609210）
江苏省自然科学基金资助项目(BK20150457) （BK20150457）
流体及动力机械教育部重点实验室开放课题资助项目(szjj2016-078) （szjj2016-078）
江苏省研究生科技创新计划项目(SJLX16_0596) （SJLX16_0596）
