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[1]倪鸿雁,陈绪兵*,胡晶宇,等.大口径输气管道的泄漏检测及去噪[J].武汉工程大学学报,2018,40(03):351-354.[doi:10. 3969/j. issn. 1674?2869. 2018. 03. 024]
 NI Hongyan,CHEN Xubing*,HU Jingyu,et al.Leakage Detection and Denoising of Large Diameter Gas Pipeline[J].Journal of Wuhan Institute of Technology,2018,40(03):351-354.[doi:10. 3969/j. issn. 1674?2869. 2018. 03. 024]
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大口径输气管道的泄漏检测及去噪(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
40
期数:
2018年03期
页码:
351-354
栏目:
机电与信息工程
出版日期:
2018-06-26

文章信息/Info

Title:
Leakage Detection and Denoising of Large Diameter Gas Pipeline
文章编号:
20180324
作者:
倪鸿雁1陈绪兵*23胡晶宇2杨 凯2
1. 中石化节能环保工程科技有限公司,湖北 武汉 430223;2. 武汉工程大学机电工程学院,湖北 武汉 430205;3. 化工装备强化与本质安全湖北省重点实验室(武汉工程大学),湖北 武汉 430205
Author(s):
NI Hongyan1 CHEN Xubing*23 HU Jingyu2 YANG Kai2
1. Sinopec Energy and Environmental Engineering Co.,LTD, Wuhan 430223, China; 2. School of Mechanical and Electrical Engineering, Wuhan Institute of Technology, Wuhan 430205, China; 3. Hubei Key Laboratory of Chemical Equipment Intensification and Intrinsic Safety(Wuhan Institute of technology),
关键词:
次声波输气管道泄漏检测去噪小波变换
Keywords:
infrasonic wave gas pipeline leakage detection denoising wavelet transform
分类号:
TE88
DOI:
10. 3969/j. issn. 1674?2869. 2018. 03. 024
文献标志码:
A
摘要:
针对大口径输气管道的泄漏问题,研究了次声波泄漏检测技术及次声波信号的去噪方法。首先,以Lighthill方程和FW-H方程描述了输气管道次声波的产生机理,并通过管道两端的传感器接收到次声波信号的时间差来准确定位泄漏点。其次,建立了输气管道FLUENT仿真模型,模拟了发生泄漏时管道内气体的压强与流速分布,发现在模拟泄漏口附近流场出现紊乱现象,形成强烈的漩涡并产生次声波。最后,采集了榆济线实验的次声波信号,通过MATLAB分析计算两种去噪算法的SNR和RMSE,并基于小波变换法编写了管道泄漏声波去噪软件对该次声波信号进行了处理,结果表明小波变换法去噪效果优于傅里叶变换法,将小波变换法用于次声波去噪处理具有良好的效果。
Abstract:
Aiming at the leakage problem of large diameter gas pipeline, we studied the infrasonic leakage detection technology and the denoising method of infrasonic signal. Firstly, the Lighthill equation and the FW-H equation were used to describe the generation mechanism of infrasonic wave in gas pipeline. The leakage point was accurately located by a sensor receiving the time difference of the infrasonic signals at both ends of the gas pipeline. Secondly, the FLUENT simulation model was established to simulate the pressure and velocity distribution of gas in the pipeline. It was found that the flow field was disorganized near the simulation leakage. A strong whirlpool and infrasonic waves were produced. Finally, the infrasonic signals of Yuji gas pipeline were collected, and the SNR and RMSE of two denoising algorithms were calculated by MATLAB. Based on wavelet transform, the infrasonic denoising software for gas pipeline leakage was compiled to deal with the infrasonic signals. The results showed that the denoising effects of wavelet transform were better than those of Fourier transform.

参考文献/References:

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备注/Memo

备注/Memo:

收稿日期:2017-02-24基金项目:湖北省自然科学基金(2014CFB790)作者简介:倪鸿雁, 硕士, 高级工程师。E-mail:[email protected]*通讯作者:陈绪兵, 博士, 教授。 E-mail:[email protected]引文格式:倪鸿雁, 陈绪兵, 胡晶宇, 等. 大口径输气管道的泄漏检测及去噪[J]. 武汉工程大学学报,2018,40(3):351-354.
更新日期/Last Update: 2018-06-28