γ射线数字化扫描自动检测技术的研究  

Study of Automatic Testing Technology of γ-ray Digital Scanning

作　　者：林筱华 何凤岐[2] 何石 

机构地区：[1]中国石油化工股份有限公司茂名分公司,广东茂名525011 [2]中国核动力研究设计院,四川成都610041 [3]核工业管理干部学院,北京102618

出　　处：《石油化工腐蚀与防护》2011年第6期44-45,49,共3页Corrosion & Protection In Petrochemical Industry

摘　　要：文章介绍了切线照相法(TRT)与由TRT技术发展而来的γ射线数字扫描检测技术(GSDM)的原理。根据射线强度的衰减与射线能量谱有关,与被检测材料性质及其厚度有关的原理确定了解决问题的技术方案,研制出了具有自主知识产权的样机。该样机安装了定向安全联锁机构源机、高灵敏度探测器、光电倍加放大器、程控自动扫描装置和计算机实时处理技术。适用范围:钢管直径50-159 mm;保温层外径小于300 mm。该技术的应用范围主要有高温管道测厚、管道和炉管结垢厚度检测以及高温管道在线监测等方面。The principles of TRT and γ - ray digital scanning technology （GSDM） developed from TRT are introduced. The proprietary proto - type testing machine has been developed based upon the relations of γ - ray intensity attenuation with EDS, properties of materials for testing and material thickness. The proto - type testing machine is installed with ESD device, high - sensitivity probe, photoelectric duplex amplifier, program- controlled scanning unit and real -time processing computer. It is applicable for thickness measurement of high - temperature pipelines, thickness measurement of fouling in pipelines and furnace tubes as well as for on - line monitoring of high - temperature pipelines.

关 键 词：管道 保温 壁厚 测厚 检测技术 

分 类 号：TG115.282[金属学及工艺—物理冶金]