超设计使用年限LDPE反应管内穿旋转涡流检测  

Rotary Eddy-current Testing for Inner Surface on LDPE Tubular Reactor Exceeding the Design Service Life

作　　者：傅如闻 邓聪 李绪丰 卢聪赟 Fu Ruwen;Deng Cong;Li Xufeng;Lu Congyun(Guangdong Institute of Special Equipment Inspection&Research,Guangzhou 510655;Eddysun(Xiamen)Electronic Co.,Ltd.,Xiamen 361008)

机构地区：[1]广东省特种设备检测研究院,广州510655 [2]爱德森(厦门)电子有限公司,厦门361008

出　　处：《中国特种设备安全》2023年第3期55-58,共4页China Special Equipment Safety

基　　金：广东省市场监督管理局科技项目(2020ZT01)。

摘　　要：为解决低密度聚乙烯(LDPE)自增强反应管缺乏有效检测手段的问题,通过自主研发内穿式旋转涡流检测专用设备,实现了对超设计使用年限的LDPE自增强反应管内壁的检测研究工作。研究发现:内穿旋转式涡流检测系统对开口缺陷检测灵敏度最高可达0.3 mm宽当量,且能够实现对缺陷的准确定位;通过4个独立可选频率相位的硬件设计和低噪声同步滤波方法,使得系统在具备较高检测灵敏度的同时,有效识别内壁异物所引起的噪声。通过为超设计使用年限的在役LDPE反应管开展涡流检测,为反应管的延寿安全使用奠定了基础。In order to solve the problem of the lack of effective detection methods for LDPE auto-frettage tubular reactor,the rotary eddy-current testing were done on inner surface of LDPE autofrettage tubular reactor with exceed the design service life through independent R&D special equipment.It is found that the defect sensitivity of the eddy-current testing system is up to 0.3 mm wide equivalent,and the defect can be located accurately through the hardware design of four independent optional frequency phases and the low-noise synchronous filtering method,the system has high sensitivity and can effectively identify the noise caused by foreign body on the inner surface.The eddy-current testing of LDPE autofrettage tubular reactor with exceed the design service life is carried out,which lays a foundation for the life extension safe use of the tubular reactors.

关 键 词：内穿旋转涡流 超设计使用年限反应管 自增强再处理 

分 类 号：X924[环境科学与工程—安全科学]