运载火箭管道微泄漏声发射检测仪  

Launch vehicle pipeline micro leakage acoustic emission detector

作　　者：王少锋 陈智豪 董丽丽 刘文婧[3] Wang Shaofeng;Chen Zhihao;Dong Lili;Liu Wenjing(Inner Mongolia Autonomous Region Key Laboratory of Electromechanical Systems Intelligent Diagnosis and Control,Institute of Mechanical Engineering,Inner Mongolia University of Science and Technology,Baotou 014010,Inner Mongolia,China;Institute of Mechanical Engineering,Inner Mongolia University of Science and Technology,Baotou 014010,Inner Mongolia,China;Mining Research Institute,Institute of Mechanical Engineering,Inner Mongolia University of Science and Technology,Baotou 014010,Inner Mongolia,China)

机构地区：[1]内蒙古科技大学机械工程学院内蒙古自治区机电系统智能诊断与控制重点实验室,包头014010 [2]内蒙古科技大学机械工程学院,包头014010 [3]内蒙古科技大学机械工程学院矿业研究院,包头014010

出　　处：《现代制造工程》2020年第4期153-158,共6页Modern Manufacturing Engineering

基　　金：国家自然科学基金资助项目(51565047);内蒙古自治区自然科学基金资助项目(2018MS05007,2017MS(LH)0531);内蒙古科技大学优秀青年科学基金项目(2017YQL04)。

摘　　要：目前,传统的运载火箭总对接管路系统气密性检测方法为皂泡法,该方法在检测过程中存在耗时长、容易发生误判和漏判问题。为解决传统皂泡法的缺陷问题,进行了便携式气密性检测声发射检测仪的研究。首先进行检测设备各个部件的设计与选型,然后对火箭管道进行了检漏试验,进一步分析了泄漏信号的时域和频域特征,最后确定了通过拟合频率段包络面积来判别泄漏等级的算法。结果表明,通过设计、开发和测试验证的手持式声发射检测仪新设备,能够对火箭管道的泄漏等级进行更加高效、精准的评估。At present,the traditional airtight detection method of the total docking pipeline system of the launch vehicle is soap bubble method,which has problems of long time-consuming and being prone to misjudgment and missed judgment during the detection.In order to solve the problem of defect of traditional soap bubble method,the portable air tightness detection acoustic emission equipment was studied.Firstly,the design and selection of each component of the detection equipment were carried out,and then the leakage detection experiment was carried out on the launch vehicle pipeline,gave an further analysis of the time-domain and frequency-domain characteristics of the leakage signal,and finally determined the algorithm to identify the leakage grade by fitting frequency-domain area.The results show that the new handheld acoustic emission detection equipment designed,developed and tested can make a more efficient and accurate assessment of the level of pipeline leakage.

关 键 词：便携式 管道泄漏 声发射 检测 

分 类 号：TD85[矿业工程—金属矿开采]