摘要
以混沌理论为基础 ,利用相图分析方法研究了注水泵机组状态由正常到分岔、再到混沌的演化过程 ,得到了振动信号相图与方差值之间的对应关系。提出了用相图定性地判断离心式注水泵机组是否存在故障的方法 ,该方法解决了常规诊断方法难以解决的问题。利用辽河油田欢喜岭采油厂和曙光采油厂的注水泵机组的振动数据进行实验 ,取得了良好效果。将该方法与其他参数相结合 ,可以提高诊断精度 ,为大型离心式设备的故障诊断提供了一条有效途径。
The water injection pump units are widely used in the production of oilfields. Based on the chaos theory, the evolvement state of water injection pump units from normal to bifurcation and then to chaos was researched. The corresponding relation between phase portrait and variance of vibration signal was obtained. A new method for judging qualitatively pump fault with phase portrait was presented. This method was tested using the vibration data of water injection pump units in Liaohe Oilfield, and a good result has been obtained. The phase portrait and variance combined with other characteristic parameters can effectively improve the diagnosis precision.
出处
《石油大学学报（自然科学版）》
EI
CSCD
北大核心
2003年第4期88-90,93,共4页
Journal of the University of Petroleum,China(Edition of Natural Science)
关键词
相图
方差
油田
注水泵
故障诊断
混沌理论
振动信号
phase portrait
variance
chaos theory
water injection pump
fault diagnosis
