油气润滑系统流型识别方法研究
钟杰,孙启国
(北方工业大学 机械与材料工程学院,北京 100144)
摘要:提出了一种基于油气润滑系统油气两相流压差波动信号来识别流型的方法。首先借助Fluent提取了油气润滑系统水平管道中常见的四种流型的压差波动信号作为训练和识别的样本;然后采用EMD(经验模态分解)方法提取油气流流型压差波动信号的特征;最后采用PSO-PNN算法对油气两相流流型进行了识别。结果表明:油气两相流流型与压差波动信号之间存在对应关系,通过对压差波动信号的分析可以获取流型信息;油气两相流的压差波动信号具有非平稳特性,采用EMD方法可以较好地提取流型信息;优化后PNN模型可较好地识别油气润滑水平管道内油气两相流流型。
关键词:压差波动信号;EMD分解;PSO-PNN算法;流型识别
中图分类号:U262.24 文献标志码:A doi:10.3969/j.issn.1006-0316.2019.10.010
文章编号:1006-0316 (2019) 10-0058-05
Research on Flow Pattern Recognition Method of Oil and Gas Lubrication System
ZHONG Jie,SUN Qiguo
( Mechanical and Materials Engineering College, North China University of Technology, Beijing 100144, China )
Abstract:This paper proposes a method for identifying flow patterns based on oil-gas lubrication system oil-gas two-phase flow differential pressure fluctuation signals.Firstly, Fluent is used to extract the differential pressure fluctuation signals of four types of flow patterns commonly used in horizontal pipelines of oil and gas lubrication systems as training and identification samples. Then, EMD (empirical mode decomposition) method is used to extract the characteristics of oil flow flow type differential pressure fluctuation signals. Finally, PSO-PNN is adopted. The algorithm identifies the two-phase flow pattern of oil and gas. The results show that there is a corresponding relationship between the two-phase flow pattern and the differential pressure fluctuation signal. The flow pattern information can be obtained by analyzing the differential pressure fluctuation signal. The differential pressure fluctuation signal of the oil and gas two-phase flow has non-stationary characteristics, using EMD. The method can extract the flow pattern information well; the optimized PNN model can better identify the oil and gas two-phase flow pattern in the oil and gas lubrication level pipeline.
Key words:differential pressure fluctuation signal;EMD decomposition;PSO-PNN algorithm;flow pattern recognition
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收稿日期:2019-04-30
作者简介:钟杰(1992-),男,河南安阳人,硕士研究生,主要研究方向为油气润滑技术,流型识别方法;孙启国(1963-),男,北京人,博士,教授,主要研究方向为摩擦学与工业润滑技术、机械系统动力学及其控制。
 

 

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