气体管道泄漏声源特性研究

发布时间：2018-01-30 03:13

本文关键词： 气动声学管道泄漏声波法声源特性　出处：《声学技术》2017年02期 　论文类型：期刊论文

【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。
[Abstract]:The accuracy and adaptability of acoustic leakage detection are determined by the characteristics of gas pipeline leakage sound source. In order to explore the characteristics of gas pipeline leakage sound source, the physical model of gas pipeline leakage is established. The corresponding mechanism of acoustic wave generation is studied and the different leak caliber is analyzed. The characteristics of the leakage sound source under different pressure are compared with the experimental results. The results show that the main source of the gas pipeline leakage is the quadrupole sound source, and the energy of the leakage sound wave is mainly below 50 Hz. The average sound pressure level increases with the increase of the internal pressure and the diameter of the leakage. The comparison of the simulation results with the experimental results shows that the simulation method is feasible for the analysis of the acoustic source characteristics of the gas pipeline leakage.
【作者单位】：山东科技大学机械电子工程学院;
【基金】：山东省自然科学基金(ZR2012AM011)资助项目
【分类号】：TE973.6
【正文快照】： 0引言1使用管道输送天然气等气体具有安全、经济、高效、便于管理等优点,因此管道在气体输送中占有重要的地位[1]。但是由于管道设备的老化、地理条件的变化、人为破坏等原因,管道泄漏事故时常发生。为了最大限度地减小气体管道泄漏带来的人员伤亡、经济损失和环境破坏,需要及

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