基于声发射技术的管道泄漏检测研究  

Research on Pipeline Leak Detection Based on Acoustic Emission Technology

作　　者：张鹏林[1] 王汝姣 姜宜成[1] 李梅[1] 

机构地区：[1]兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室,甘肃兰州730050

出　　处：《甘肃科学学报》2017年第3期86-91,共6页Journal of Gansu Sciences

摘　　要：通过搭建管道泄漏试验模拟平台,结合声发射(AE)技术,对管道泄漏AE信号的影响因素和初步定位技术进行了分析研究。探讨了传播距离、泄漏孔径、压力与AE信号之间的关系,通过相关分析法实现管道泄漏的定位。结果表明:AE信号频谱幅值随传播距离的增大呈衰减趋势;泄漏信号的频率随泄漏孔径的增大向低频集中,随压力的增大向高频扩展;传感器间距较小时,互相关分析法能够得出理想的定位结果。Through building a pipeline leak test simulation platform,combined with acoustic emission（AE） technology, the influence factors and preliminary location technology on AE signal of pipeline leakage were analyzed.The relationship between the propagation distance,the leakage aperture,the pressure and the AE signal was discussed, and the location of the pipeline leakage was realized by the correlation analysis meth- od.Results showed that the spectrum amplitude of AE signal was decreasing with the increase of propaga- tion distance;the frequency of the leakage signal centralized to the low frequency with the increase of the leakage aperture, and extended to the high frequency with the increase of the pressure;the cross correlation analysis method can obtain the ideal result in the case of the sensor spacing was smaller.

关 键 词：声发射技术 管道 泄漏 互相关分析 定位 

分 类 号：TE973[石油与天然气工程—石油机械设备]