基于仿真技术和奇异性检测的管道泄漏检测技术
Pipeline Leakage Detection and Location Based on Emulation Technology and Singular Point Detection
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- DOI:
- 作者:
- 刘恩斌1, 李长俊1, 刘渊2, 卿明祥1,3
LIU En-bin1
- 作者单位:
- 1. 西南石油大学, 四川成都 610500;
2. 西南油气田分公司重庆气矿, 重庆 400021;
3. 青海油田公司采油一厂, 甘肃敦煌 736200
Southwest Petroleum University, Chengdu 610500, China
- 关键词:
- 仿真技术;管道;泄漏检测;奇异性;小波变换
emulation technology;pipeline;leakage detection;singularity;wavelet transform
- 摘要:
- 油气输送管道的泄漏是妨碍管道安全运行的主要因素之一。文章研究了一种新型的基于仿真技术和信号奇异性检测的管道泄漏检测方法,该方法通过建立管道数学模型,利用采集到的管道前后两端的压力、流量等参数,对管道实施仿真,得到管道系统的水力坡降曲线,当管道上某一点发生泄漏后,水力坡降曲线将出现突变拐点,水力坡降曲线的小波变换模极大值反映了信号的奇异性,当其值大于给定指标时,判定管道发生了泄漏,并通过奇异点所对应的管道位置确定泄漏位置。该方法具有仿真精度高、求解速度快等优点,具有一定的理论价值和实际意义。
Aiming at the leakage phenomena occuring in pipeline, this paper puts forward a method to detect pipeline's leakage based on emulation technology and singular point detection. With this method, a mathematical model of pipeline is constructed and applied to emulate the pipeline with the acquired data of pressure, flow quantity etc at the both ends of the pipeline to get the hydraulic slope curve of the pipeline system. When leakage happens, a mutational inflexion point will appear on the hydraulic slope curve. The maximum value of wavelet transform module reflects the signal singularity. When the value exceeds the threshold, it is determined that leakage occurs, and its location can be determined by the singular point at the pipeline. With the advantages of high emulating accuracy, fast resolving speed and so on, this method has theoretical and practical values.2008,3(3): 61-63 收稿日期:2007-11-5分类号:TE973.6基金项目:四川省重点学科建设研究项目(SZD0416)资助作者简介:刘恩斌(1980-),男,四川遂宁人,讲师,2005毕业于西南石油大学油气储运工程专业,获硕士学位,现在西南石油大学油气储运研究所工作,主要从事油气管道安全运营技术研究.参考文献:
[1]李长俊.天然气管道输送[M].北京:石油工业出版社,2000.
[2]刘恩斌,彭善碧,李长俊,等.仿真技术研究及其在气田管网改造中的应用[J].天然气工业,2005,25(1):135-137.
[3]刘恩斌,李长俊,梁党国,等.王化输油管道泄漏检测系统应用[J].石油天然气学报,2005,27(4):524-526.
[4]刘恩斌,李长俊,梁党国,等.输油管道泄漏检测技术研究与应用[J].油气储运,2006,25(2):43-45.
[5]刘恩斌,彭善碧,李长俊,等.基于瞬态模型的油气管道泄漏检测[J].天然气工业,2005,25(6):102-104.
[6]Stephane Mallat.信号处理的小波引导[M].杨力华,戴道清,黄文良,等译.北京:机械工业出版社,2002.
