换热器小径薄壁管内壁点聚焦水浸超声波检验技术研究  

作　　者：刘奎 林百涛 刘云 余小侠 欧阳标 

机构地区：[1]中核武汉核电运行技术股份有限公司

出　　处：《科技视界》2020年第24期1-5,共5页Science & Technology Vision

摘　　要：根据换热器小径薄壁管在役检查的特点,设计了点聚焦水浸超声检验技术和检验设备,实现从小径薄壁管内壁进行超声波半自动及全自动检查,且可有效检测出20%壁厚及以上的裂纹缺陷,可靠性高。该技术可以弥补小径薄壁管涡流检验的局限性,提高在役检查结果的准确性。According to the characteristics of in-service inspection of small-diameter thin-walled tube of heat exchanger,a point focused water immersion ultrasonic inspection technology and equipment were designed to realize the semi-automatic and full-automatic ultrasonic inspection from the inner wall,and effectively detected the crack defects of 20%or more of the wall thickness with high reliability.This technology can make up for the limitation of eddy current inspection of small-diameter thin-walled tube and improve the accuracy of in-service inspection results.

关 键 词：换热器 小径薄壁管 内壁 点聚焦 水浸超声 

分 类 号：TP274.53[自动化与计算机技术—检测技术与自动化装置]