一种基于三维点云处理的反应堆压力容器主螺栓孔缺陷识别方法  

A Method for Identifying Defects in the Main Bolt Holes of Reactor Pressure Vessels Based on 3D Point Cloud Processing

作　　者：付小军[1] FU Xiaojun(CNNC Jiangsu Nuclear Power Co.,Ltd.,Lianyungang 222000,China)

机构地区：[1]中核集团江苏核电有限公司,江苏连云港222000

出　　处：《无损探伤》2025年第2期14-19,共6页Nondestructive Testing Technology

摘　　要：反应堆压力容器是核反应堆发电系统的关键部件之一,在其役前与役后对法兰面的主螺栓孔进行质量检查非常重要。传统的反应堆压力容器主螺栓孔多采用视频流或图片流的形式完成表面质量与缺陷的检测,这些方法虽然能够完成质量检测任务,但无法以三维立体的形式直观地展现出缺陷的具体分布。因此本文提出了一种基于三维点云处理的反应堆压力容器主螺栓孔的缺陷识别方法,该方法基于点云重构、点云处理、点云配准等相关技术完成了对待检测主螺栓孔的三维建模和缺陷识别。实验结果表明,该方法精度高,以三维模型的方式可以直观地反应出缺陷信息,可以完成反应堆压力容器主螺栓孔的缺陷识别工作。The reactor pressure vessel is one of the key components of the nuclear reactor power generation system,and quality inspection of the main bolt holes on the flange surface before and after service is very important.Traditional reactor pressure vessel main bolt holes are often inspected for surface quality and defect detection through video or image streams.Although these methods can complete quality inspection tasks,they cannot visually display the specific distribution of defects in a three-dimensional form.Therefore,this article proposes a defect identification method for the main bolt holes of reactor pressure vessels based on 3D point cloud processing.This method completes the 3D modeling of the main bolt holes to be inspected and identifies defects based on relevant technologies such as point cloud reconstruction,point cloud processing,and point cloud registration.Finally,the effectiveness of the method proposed in this article was demonstrated through experimental verification.The experimental results show that this method has high accuracy and can intuitivelyreflect defect information in a three-dimensional model,which can complete the defect identification work of the main bolt hole of the reactor pressure vessel.

关 键 词：点云处理 压力容器 主螺栓孔 缺陷识别 

分 类 号：TG115.28[金属学及工艺—物理冶金]