| 闫成稳,韩宝坤,鲍怀谦,蒋相广,牛家鹏.气体管道泄漏声源特性研究[J].声学技术,2017,36(2):110~115 |
| 气体管道泄漏声源特性研究 |
| Research on acoustic source characteristics of gas pipeline leakage |
| 投稿时间：2016-04-08 修订日期：2016-07-18 |
| DOI：10.16300/j.cnki.1000-3630.2017.02.003 |
| 中文关键词: 气动声学 管道泄漏 声波法 声源特性 |
| 英文关键词: aero-acoustics pipeline leakage acoustic method acoustic source characteristics |
| 基金项目:山东省自然科学基金（ZR2012AM011）资助项目 |
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| 全文下载次数: 1572 |
| 中文摘要: |
| 气体管道泄漏声源的特性决定了声波法气体管道泄漏检测的精度和适应性。为探究气体管道泄漏声源的特性，建立了气体管道泄漏的物理模型，研究了相应的声波产生机理。分析了不同泄漏口径、不同管道压力下的泄漏声源特性并与实验结果进行了对比。结果表明：气体管道泄漏产生的声源以四极子声源为主，泄漏声波能量主要集中在50 Hz以下，声压级均值随管道内压和泄漏口径的增大而增大。仿真结果与实验结果对比表明，基于该仿真方法对输气管道泄漏的声源特性分析是可行的。 |
| 英文摘要: |
| The acoustic source characteristics of gas pipeline leakage determine the accuracy and adaptability of acoustic leak detection for gas pipelines. In order to explore the acoustic source characteristics of gas pipeline leakage, the physical model of gas pipeline leakage is established and the corresponding acoustic wave generation mechanism is studied. Then the acoustic source characteristics under different leakage apertures and different pipeline pressures are analyzed and compared with experimental results. The results show that the acoustic source of gas pipeline leakage is mainly the quadrupole source and the generated acoustic energy is mainly concentrated below 50 Hz. The average value of sound pressure level is increased with the increase of pipeline pressure and leakage aperture. The comparison between the simulation results and experimental results shows that the simulation method is feasible to analyze the acoustic source characteristics of gas pipeline leakage. |
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