排灌机械工程学报Issue(10)：858-863,6.DOI:10.3969/j.issn.1674-8530.13.0238
离心泵多流量工况振动特性试验研究
Vibration characteristics study of centrifugal pumps
摘要
Abstract
Effects of the flow rates on the vibration characteristics of a centrifugal pump were investiga-ted using experimental methods and the flow rate three-dimensional spectrum graph methods.The test data at 5 test points under 7 flow rates,including small flow rates,high flow rates and the designed flow rate,were collected and analyzed.Results show that the relationship (V-Q)between vibration intensity (V)and flow rate (Q)is more complicated than that (η-Q)between efficiency (η)and flow rate (Q).Peaks of V-Q curves are related to fluid -induced vibration during the changing process of flow rate.There have significant difference between V-Q curve of axial vibration test and that of radial vibration test,while the latter basically have the same trend.Flow rate three-dimensional spectrum graph is able to reflect the changing process during the flow rate change.In addition,the spectrum characteristics of the fluid-induced vibration and the relationship between the best efficiency point (BEP)and vibration intensity were discussed.关键词
离心泵/流量/振动/流量三维频谱图/流致振动Key words
centrifugal pump/flow rate/vibration/flow rate three-dimensional spectrum graph/flow-induced vibration分类
农业科技引用本文复制引用
马会防,张执南,储浩..离心泵多流量工况振动特性试验研究[J].排灌机械工程学报,2014,(10):858-863,6.基金项目
国家自然科学基金资助项目（51205247）；上海市博士后基金资助项目 （）
