3000m^3液氨球罐TOFD检测应用  

Application of TOFD testing on a 3 000m^3 liquid ammonia spherical tank

作　　者：刘国栋[1] 陈贤洮[1] 王林[1] LIU Guodong;CHEN Xiantao;WANG Lin(Hefei General Machinery Research Institute, Anhui provincial laboratory for safety technology of pressure vesselsand pipelines, Hefei 230031, China)

机构地区：[1]合肥通用机械研究院安徽压力容器与管道安全技术省级实验室,安徽合肥230031

出　　处：《电焊机》2017年第11期117-119,共3页Electric Welding Machine

摘　　要：介绍球罐的技术特点和液氨球罐在现场建造过程中的焊缝检测难点,以及TOFD检测技术的特点分析和国内TOFD检测标准的发展和应用更新,列举了TOFD检测在3 000 m^3液氨球罐工程上的应用实例。总结出TOFD检测代替射线检测在3 000 m^3液氨球罐建造上应用的可行性。同时,分析了在应用TOFD进行焊缝检测时,TOFD检测精度和结果的影响因素。在说明TOFD检测应用优势的同时又指出TOFD检测的不足之处,即TOFD检测存在一定的表面和底面盲区,球罐采用TOFD检测时仍然需要辅以脉冲反射法超声波检测和表面检测。为今后同类设备的无损检测应用提供了应用经验和工程借鉴。According to illustration about characteristics of spherical tanks and NDT difficulties of liquid ammonia spherical tanks,features of TOFD testing technology and improvement and updates of TOFD standards, a instance about TOFD application on 3 000m3liquid ammonia spherical tank is enumerated in this paper. It is correct that the ammonia spherical tank is constructed by TOFD notradiographic testing. Although TOFD haves a lot of advantages on spherical tanks NDT, TOFD testing technology have blind zones of theupper and bottom surface. Meanwhile, magnetic particle and penetrant testing should be application to spherical tanks constructionbesides TOFD. It provided some experience for reference in similar tanks.

关 键 词：TOFD检测 球罐 盲区 

分 类 号：TG457[金属学及工艺—焊接]