1511 cm-1处SO_(2)F_(2)的光声光谱探测研究  

Research on photoacoustic spectroscopic detection of SO_(2)F_(2) at 1511 cm-1

作　　者：齐汝宾 丁金峰 陈东升 张一博 张伊涛 任林娇 秦自瑞 张培 姜利英 李新田 赫树开 QI Ru-bin;DING Jin-feng;CHEN Dong-sheng;ZHANG Yi-bo;ZHANG Yi-tao;REN Lin-jiao;QIN Zi-rui;ZHANG Pei;JIANG Li-ying;LI Xin-tian;HE Shu-kai(College of Electrical Information Engineering,Zhengzhou University of Light Industry,Zhengzhou 450002,China;School of Electronics and Information,Zhengzhou University of Light Industry,Zhengzhou 450002,China;HENAN RELATIONS CO,LTD,Zhengzhou 450001,China)

机构地区：[1]郑州轻工业大学电气信息工程学院,河南郑州450002 [2]郑州轻工业大学电子信息学院,河南郑州450002 [3]河南省日立信股份有限公司,河南郑州450001

出　　处：《激光与红外》2025年第1期85-90,共6页Laser & Infrared

基　　金：河南省重点研发专项项目(No.221111220200);河南省重点研发与推广专项(科技攻关)项目(No.222102210226);2023年河南省重大科技专项项目(No.231100220800)资助。

摘　　要：氟化硫酰(SO_(2)F_(2))是SF_(6)早期分解产物的代表,对SO_(2)F_(2)的精准定量分析,可以有效预判电气设备的潜在故障,进而避免设备的损坏以维护电力系统的安全稳定运行,因此对SO_(2)F_(2)的快速、高灵敏度检测显得尤为重要。为此,研制了一种基于中红外波段的高灵敏度SO_(2)F_(2)气体光声传感系统,该检测系统结合小型共振式光声池与QCL激光器,首次在中心波长为1511 cm^(-1)的肩峰吸收波段,实现了对SO_(2)F_(2)的高灵敏的光声探测。研究结果表明,该光声系统响应度为63.32 mV/ppm,当积分时间为13s,最低检出限可达1.7 ppb。Sulfuryl fluoride(SO_(2)F_(2))is a representative early decomposition product of SF_(6),and accurate quantitative analysis of SO_(2)F_(2) can effectively predict potential faults in electrical equipment,thereby preventing equipment damage and maintaining the safe and stable operation of the power system.Therefore,the rapid and highly sensitive detection of SO_(2)F_(2) is of great importance.To this end,a highly sensitive SO_(2)F_(2) gas photoacoustic sensor system for SO_(2)F_(2) gas based on the mid-infrared wavelength band is developed,which combines a miniature resonant photoacoustic cell with a QCL laser,enabling high-sensitivity photoacoustic detection of SO_(2)F_(2) for the first time in the side peak absorption band at a central wavelength of 1511 cm^(-1).The results show that the photoacoustic system has a responsivity of 63.32 mV/ppm and a minimum detection limit of up to 1.7 ppb when the integration time is 13s.

关 键 词：SO_(2)F_(2) QCL激光器 光声光谱 小型光声池 肩峰 

分 类 号：O433[机械工程—光学工程] TM213[理学—光学]