基于扰动响应的输油管道泄漏检测方法

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摘要当管道无法产生足够的瞬态扰动时，将无法利用管道内部流动进行管道状态诊断，而基于扰动信号压力响应的管道泄漏检测方法可以克服这一缺陷。向有泄漏孔的管道引入扰动信号，通过分布式传感器采集动态压力，识别分析待测管道泄漏孔处对扰动信号的反射，实现泄漏检测与定位。同时，基于动网格技术模拟阀门启闭,建立了二维仿真模型，分析反射信号特征，得到了十分理想的检测效果。结果表明，扰动信号反射波的识别精度达7.659%，边界末端反射波的识别精度为0.121%，泄漏点定位误差为4.447%；而模拟结果可以实现精确定位。此外针对不同因素的影响进行分析，结果表明，扰动信号瞬态特征越强，泄漏孔尺寸越大，反射信号越明显，而管道运行压力对检测效果的影响十分有限。该方法与传统的泄漏检测方法相比具有明显的优越性，对于提高输油管道完整性管理水平具有极大的应用价值。
关键词：泄漏检测；压力响应；反射信号；动网格

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	尹渊博1
	2
	袁辰1
	2
	杜荟敏3
	崔兆雪4
	刘翠伟1
	2
	李玉星1
	2

关键词 ：泄漏检测, 压力响应, 反射信号, 动网格

Abstract：The flow state inside the pipeline cannot be used to diagnose the pipeline state if the pipeline cannot generate enough transient disturbance, and this defect can be compensated by the detection method based on the disturbance reflected signal. Disturbance signal is introduced to the pipeline with leakage and transient state is caused. Then dynamic pressure is collected by distributed sensor to identify and analyze the reflection of disturbance signal from the leakage hole which contains the leakage characteristics. A two-dimensional simulation model is established and the characteristics of reflected signal are analyzed. The process of valve opening and closing is restored by dynamic mesh technology and an ideal detection effect was obtained. It is shown that the recognition accuracy of reflected wave of disturbance signal and end boundary are 7.659% and 0.121% respectively, and the location error of leakage point is 4.447%. The simulation results can achieve zero error accurate positioning. In addition, the influence of different factors is analyzed. The results show that the intensity of reflected signal is positively correlated with the transient characteristics of disturbance signal and the size of leakage. Surprisingly, the pipe operating pressure has little effect on the detection effect. Compared with the traditional leak detection method, this method has obvious advantages and great application value for improving the integrity management level of oil pipeline.
Key words: leak detection; pressure response; reflected signal; dynamic mesh

Key words： leak detection pressure response reflected signal dynamic mesh

收稿日期: 2021-08-25 出版日期: 2022-12-15

引用本文:

尹渊博1,2，袁辰1,2，杜荟敏3，崔兆雪4，刘翠伟1,2，李玉星1,2. 基于扰动响应的输油管道泄漏检测方法[J]. 振动与冲击, 2022, 41(23): 43-50.
YIN Yuanbo1,2, YUAN Chen1,2, DU Huimin3, CUI Zhaoxue4, LIU Cuiwei1,2, LI Yuxing1,2. Leakage detection method of oil pipeline based on disturbance response. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(23): 43-50.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2022/V41/I23/43

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