基于声波幅值衰减的输水管道泄漏定位
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摘要
目前的泄漏检测定位技术大多基于时间差,定位精度受时间差和声波速度的影响较大。文章采用一种基于声波幅值衰减的泄漏检测定位技术进行管道泄漏检测,实验表明,基于声波幅值衰减的泄漏检测定位技术可在不计算声速和时间差的前提下实现泄漏定位,其定位精度与衰减因子计算精度有关。
Most of the leakage locate method is based on the time difference, whose location accuracy is greatly affected by time difference and acoustic wave velocity. In this study, a leakage location method based on acoustic wave amplitude was applied on the leakage location of pipe. The results show that this method can locate leakage without calculating acoustic velocity and time difference and the locate accuracy is affected by attenuation factor calculating accuracy.
Most of the leakage locate method is based on the time difference, whose location accuracy is greatly affected by time difference and acoustic wave velocity. In this study, a leakage location method based on acoustic wave amplitude was applied on the leakage location of pipe. The results show that this method can locate leakage without calculating acoustic velocity and time difference and the locate accuracy is affected by attenuation factor calculating accuracy.
引文
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[5]Mostafapour A,Davoudi.Analysis of leakage in high pressure pipe using acoustic emission method[J].Applied Acoustics,2013,74(3):335-342.
[6]Liu C,Li Y,Fang L,et al.Leakage monitoring research and design for natural gas pipelines based on dynamic pressure waves[J].Journal of Process Control,2017,50:66-76.
[2]万洪杰,孙凌云,张兴武.DOLPHIN智能音波管道泄漏监测系统[J].自动化博览,2009,3:87-88.
[3]Ozevin D,Harding J.Novel leak localization in pressurized pipeline networks using acoustic emission and geometric connectivity[J].International Journal of Pressure Vessels and Piping,2012,92:63-69.
[4]Lazhar A,Hadj-Ta?eb L,Hadj-Ta?eb E.Two leaks detection in viscoelastic pipeline systems by means of transient[J].Journal of Loss Prevention in the Process Industries,2013,26(6):1341-1351.
[5]Mostafapour A,Davoudi.Analysis of leakage in high pressure pipe using acoustic emission method[J].Applied Acoustics,2013,74(3):335-342.
[6]Liu C,Li Y,Fang L,et al.Leakage monitoring research and design for natural gas pipelines based on dynamic pressure waves[J].Journal of Process Control,2017,50:66-76.