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仪器研制
仪器研制
DOI:10.11973/wsjc202406013
反应堆压力容器主螺栓孔的视频扫查装置
马思敏,张 洋,沈绍宾,吴健荣,马官兵
(中广核检测技术有限公司,苏州 215000)
摘 要:反应堆压力容器螺栓孔是压力容器顶盖设备的重要组成部分。由于每次换料大修均需
通过主螺栓的旋出和旋入来开关反应堆压力容器顶盖,故主螺栓孔容易产生接触损伤。针对此问题,
开发了一套螺栓孔内表面视频扫查装置,介绍了该装置的研制方案和系统构成,并对其进行了功能
测试,对压力容器的螺栓孔进行检查,测试结果表明,该装置可以在压力容器法兰表面绕中心轴周
向行走,运动准确,可靠性好,采集的视频图像清晰,畸变率低,满足使用需求。同时,该套视频扫
查装置集成程度高,操作简单,兼具手动及自动模式,可显著降低现场工作人员承受的辐射剂量,
提高在役检查的效率。
关键词:反应堆压力容器;螺栓孔;视频;扫查设备
中图分类号:TG115.28 文献标志码:A 文章编号:1000-6656(2024)06-0073-04
Video scanning device for main bolt holes of reactor pressure vessel
MA Simin, ZHANG Yang, SHEN Shaobin, WU Jianrong, MA Guanbing
(CGN Inspection Technology Co., Ltd., Suzhou 215000, China)
Abstract: The bolt holes of the reactor pressure vessel are an important component of the pressure vessel head
equipment. Due to the fact that each major refueling overhaul requires the opening and closing of the top cover of the reactor
pressure vessel through the screwing out and screwing in of the main bolts, the main bolt holes of the pressure vessel are
prone to contact damage. A video scanning device for the inner surface of threaded holes was developed to address this
issue. The development plan and system composition of the device were introduced, inspection of holes of pressure uessels
and functional testing was conducted on the device. The test results showed that the device can walk around the central axis
on the flange surface of pressure vessels had accurate movement, good reliability, clear and visible captured video images,
low distortion rate, and met the usage requirements. At the same time, the video scanning device had a high degree of
integration, simple operation, and both manual and automatic modes, which can significantly reduce the radiation dose
borne by on-site workers and improve the efficiency of in-service inspections.
Key words: reactor pressure vessel; bolt hole; video; scanning device
反应堆压力容器是核裂变反应发生器的核心装 长期在高温、高压、高辐照、腐蚀性环境下工作且不
置,是核安全的第二道保护屏障,也是核岛内唯一一 可更换,故确保该设备的稳定运行是核电无损检测
个不可更换的主设备。其基本功能为:建立并维持 工作中的重中之重。
一回路系统的压力、固定包容堆芯及堆内构建,将 反应堆压力容器主螺栓孔是压力容器密封系
[1]
核燃料的链式反应限制在一回路中 。由于该设备 统的主要受力部件之一,是顶盖设备的重要组成部
分 。由于每次换料大修均需通过主螺栓的旋出和
[2]
旋入来开关反应堆压力容器顶盖,故主螺栓孔容易
收稿日期:2024-01-21
产生接触损伤 。针对压力容器主螺栓孔不易检测
[3]
作者简介:马思敏(1987—),男,硕士,工程师,主要从事无损检
的难题,笔者开发了一套螺栓孔内表面视频扫查装
测设备的开发工作
通信作者:马思敏,msm0820@163. com 置,介绍了该装置的研制方案和系统构成,并对其进
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2024 年 第 46 卷 第 6 期
无损检测

