增强型六氟化硫激光检漏成像仪的研制与应用  

Development and Application of Laser Imaging System for Leaky Testing of SF_6

作　　者：张辉[1] 张淑仪[1] 列剑平 刘桂梅 陈力[1] 水修基[1] 张仲宁[1] 

机构地区：[1]南京大学声学研究所近代声学实验室,南京210093 [2]吉林省电力科学研究院,长春130021 [3]南京卓实电器有限责任公司,南京210001

出　　处：《无损检测》2009年第12期943-945,949,共4页Nondestructive Testing

摘　　要：介绍增强型六氟化硫激光检漏成像仪的设计、研制与应用结果。在已有的SF_6激光检漏成像仪的基础上,利用图像信号处理等技术,对红外探测器接收的图像进行背景信号消隐,并对气体泄漏的信号进行增强处理,灵敏度大大提高。以视频显示六氟化硫微小漏点,可测得微小泄漏量10^(-3)cm^2/s。可在带电状态下对SF_6开关及气体绝缘全封闭配电装置实施准确、快捷的检测。为保证电气设备和电网安全稳定运行,并降低SF_6气体泄漏污染提供了有效检测手段。The design, manufacture and application of improved laser-infrared imaging system for leaky inspection of SF6 were presented. On the basis of previous laser-infrared imaging systems for leaky inspection of SF6, advanced pattern processing techniques were used to improve the patterns of laser irradiation and infrared imaging, including eliminating the background pictures and then enhancing the dynamic images of the SF6 leakages. Utilizing the digital signal processing, small and weak leakages of SF6 could be clearly displayed in the real-time video, which prominently increases the detective sensitivity, which could be less than 10^-3 cm^2/s. Therefore, the improved laser imaging system was an effective instrument for inspecting SF6 leakage to guarantee safe operations of electric power instruments and networks, and also to decrease environmental pollution induced by SF6 leakages.

关 键 词：泄漏检测 激光红外成像 数字图像处理 

分 类 号：TG115.28[金属学及工艺—物理冶金]