无杆抽油机系统运行状态评价方法研究  

Evaluation Method of Running Status of Rod-less Pumping System

作　　者：谭笑[1] 马超[1] 陕梅辰[1] 徐小力[1] 智玉杰 

机构地区：[1]北京信息科技大学现代测控技术教育部重点实验室 [2]中国石油集团工程设计有限责任公司北京分公司

出　　处：《石油机械》2014年第6期81-85,共5页China Petroleum Machinery

基　　金：北京市教委重点项目"双轴转子系统健康运行非平稳动特性研究"(KZ201211232039);北京高等学校青年英才计划项目"双轴转子动态演化及稳定性评价"

摘　　要：以水基动力无杆抽油机为对象,运用分形维数理论,结合信号频域分析方法,针对其正常运行、油管漏失、供液不足以及游动阀关闭迟缓4种不同工作状态进行分析,并在此基础上进行系统运行状态的定性与定量的评价分析。首先运用振动信号的频域分析方法对系统工作状态进行初级判断,再运用分形盒维数理论进行系统的压力-流量示功图分析二级评价。分析结果表明,水基动力无杆抽油机振动信号的中值频率能够定性地分析系统运行状态;分形盒维数能有效地反映系统不同的运行状态。研究结果有利于系统故障诊断的智能化并减小人为因素影响,具有一定的工程应用价值,有利于新型水基动力抽油系统的优化设计。Based on the fractal dimension theory and the signal frequency domain analysis method, a waterbased power rod-less pumping is studied on its four different working conditions including normal, tubing leakage, insufficient liquid supply and traveling valve shutting down delay conditions. On the basis of the study, the running status of rod-less pumping system is qualitative and quantitative evaluated and analyzed. The frequency-domain analysis of vibration signal is used for the primary judgment of the running status of the system, while the fractal dimension theory used in the system＇ s pressure-flow analysis is applied for the second stage evaluation. The results show that the median frequency of vibration signal of the pumping unit could be used for qualitative analysis of the system＇ s running status. The fractal dimension method could be adopted to effectively distinguish the different operating status of the system. The findings of the study are benefit for intelligent fault diagnosis of the system and eliminate the effect of human factors, providing project application value and benefits for the optimization of new type of water-based power pumping system.

关 键 词：无杆抽油机 中值频率 分形盒维数 运行状态评价 示功图 

分 类 号：TE933[石油与天然气工程—石油机械设备]