摘要
管道老化、焊接不良等因素引起管道气体泄漏,对无合作目标监测系统的研究可以极大地弥补开放光路激光检测系统对突发性泄漏事故的检测需求,而不同的目标表面及检测距离均会对激光回波信号的强弱造成影响。利用TracePro软件模拟了探测目标表面传输过程中的能量分布与方向特性,并开展了非合作目标条件下氨气激光检测实验。结果表明:采用发射与接收共光轴的光机结构并垂直于目标表面照射时可获得更高的回波信号强度;二次谐波信号幅值随检测距离先增大后减小。
Aging of pipeline,poor welding and other factors always cause pipeline leaking.The research on the non-cooperative target monitoring system can greatly make up the TDLAS open optical path monitoring system for the detection of sudden leakage accidents.However,the different target surface and detection distance will affect the strength of the laser echo signal.In this paper,the energy distribution and directional characteristics of the target surface during the transmission process was simulated by TracePro,and NH3 laser detection experiment based on TDLAS under non-cooperative target conditions was carried out.The results showed that higher optimal echo signal intensity was obtained by using the optomechanical structure that emits laser beam and receives its reflection along the common optical axis which is perpendicular to the target surface.The amplitude of the second harmonic signal increased first and then decreased with the increase of the detection distance.
作者
濮御
李品烨
李天奎
马鹏博
王迪
李栋
PU Yu;LI Pin-ye;LI Tian-kui;MA Peng-bo;WANG Di;LI Dong(School of Civil Engineering and Architecture,Northeast Petroleum University,Heilongjiang Daqing 163318,China;Qingdao Special Equipment Inspection and Testing Institute,Shandong Qingdao 266100,China)
出处
《当代化工》
CAS
2020年第1期37-40,共4页
Contemporary Chemical Industry
基金
黑龙江省教育厅省属高校科技成果研发培育项目,项目号:TSTAU-R2018020
中国石油科技创新基金研究项目,项目号:2018D-5007-0608
东北石油大学引导性创新基金,项目号:2018YDL-07
东北石油大学优秀中青年科研创新团队项目,项目号:KYCXTD201901.
关键词
非合作目标
开放光路
激光检测
气体
Non-cooperative target
Open optical path
Laser detection
Gas
