全相位时差和多次互相关的储罐罐底泄漏声源定位算法研究  

Research on Sound Source Localization Algorithm for Tank Bottom Leakage Based on Full Phase Time Difference and Multiple Cross-correlation

作　　者：张璐莹[1] 张宏远 李伟[2] 赵涛文 蒋鹏[2] 覃荣江 ZHANG Lu-ying;ZHANG Hong-yuan;LI Wei;ZHAO Tao-wen;JIANG Peng;QIN Rong-jiang(School of Petroleum Engineering,Northeast Petroleum University;School of Mechanical Science and Engineering,Northeast Petroleum University;Maoming Branch,Guangdong Institute of Special Equipment Inspection and Research)

机构地区：[1]东北石油大学石油工程学院 [2]东北石油大学机械科学与工程学院 [3]广东省特种设备检测研究院茂名检测院

出　　处：《化工机械》2020年第4期445-452,共8页Chemical Engineering & Machinery

基　　金：国家重点研发计划“公共安全风险防控与应急技术装备”重点专项(2017YFC0805803);广东省质量技术监督局科技项目(2017CT23)。

摘　　要：通过内置、外置传感器相结合的方式构成全域监测阵列,选用全相位时差和多次互相关相结合的三维超定定位算法,在储罐泄漏模拟装置上进行声源传播规律与定位的研究。结果表明:全域传感器阵列的声发射活动性较原有阵列提高250%左右,明显提高了泄漏检测灵敏度;三维超定定位算法的定位平均误差相比系统算法大幅减小,且计算时长和迭代次数均有所降低,有效提高了罐底泄漏的定位精度,进而为大型常压立式储罐底板泄漏的全域监测提供了一种有效的技术方案。Having built-in and external sensors combined to form a global monitoring array and a 3D overdetermined positioning algorithm which combining full phase time difference and multiple cross-correlation adopted to study the sound source propagation law and positioning on the tank leakage simulation device was implemented to show that,the acoustic emission activity of the global sensor array can be increased by about 250%higher than that of the original array,which significantly enhances leak detection sensitivity;in addition,the average positioning error of the 3D overdetermined positioning algorithm can be obviously reduced than that of the system algorithm,including the calculation time and the number of iterations reduced to a certain extent,which effectively improves the positioning accuracy of tank bottom leakage and provides technical solutions to accurately detecting the large tank’s bottom leakage.

关 键 词：储罐 泄漏 定位算法 全相位 互相关 声发射 

分 类 号：TQ053.2[化学工程]