无损检测
無損檢測
무손검측
NONDESTRUCTIVE TESTING
2015年
6期
57-60
,共4页
超超临界锅炉%螺旋管圈水冷壁%鳍片焊缝%专用微型超声探
超超臨界鍋爐%螺鏇管圈水冷壁%鰭片銲縫%專用微型超聲探
초초림계과로%라선관권수랭벽%기편한봉%전용미형초성탐
Ultra supercritical boiler%Spiral water cooled wall tube%Fins weld%Special miniature ultrasonic probe
针对螺旋管圈水冷壁鳍片焊缝裂纹的产生特性，开发了专用微型超声波检测探头和超声波检测仪器。在刻有近似鳍片裂纹和平底孔的螺旋管圈水冷壁试件上进行了验证性检测试验。在鳍片宽度仅5 mm 的狭长检测空间，通过鳍片单一面耦合，实现了双面鳍片焊缝缺陷检测，能够方便、有效地应用到超超临界锅炉螺旋管圈水冷壁检修环节。
針對螺鏇管圈水冷壁鰭片銲縫裂紋的產生特性，開髮瞭專用微型超聲波檢測探頭和超聲波檢測儀器。在刻有近似鰭片裂紋和平底孔的螺鏇管圈水冷壁試件上進行瞭驗證性檢測試驗。在鰭片寬度僅5 mm 的狹長檢測空間，通過鰭片單一麵耦閤，實現瞭雙麵鰭片銲縫缺陷檢測，能夠方便、有效地應用到超超臨界鍋爐螺鏇管圈水冷壁檢脩環節。
침대라선관권수랭벽기편한봉렬문적산생특성，개발료전용미형초성파검측탐두화초성파검측의기。재각유근사기편렬문화평저공적라선관권수랭벽시건상진행료험증성검측시험。재기편관도부5 mm 적협장검측공간，통과기편단일면우합，실현료쌍면기편한봉결함검측，능구방편、유효지응용도초초림계과로라선관권수랭벽검수배절。
For features of fins crack initiation of spiral water cooled wall tube,a special miniature ultrasonic probe and ultrasonic testing instrument were developed.The confirmatory tests were carried out on specimen of spiral water cooled wall tube,which were engraved with the approximate fins weld crack and flat bottom holes.The confirmatory tests have realized detection of the double fins weld defect in the long and narrow space detection of the only 5 mm fin width,through the fins of the single surface coupling,which can be conveniently and effectively applied to the overhaul of spiral water cooled wall tube of ultra supercritical boiler.
