采用参数反演的反应堆压力管间距涡流检测方法

韩捷; 陈振茂; 陈兴乐

doi:10.7652/xjtuxb202606009

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采用参数反演的反应堆压力管间距涡流检测方法

专题　先进无损检测技术 | 更新时间：2026-06-12

- 采用参数反演的反应堆压力管间距涡流检测方法
- Eddy Current Testing Method for Pressure Tube Spacing of Heavy Water Reactors Based on Parameter Inversion
- 西安交通大学学报 2026年60卷第6期页码：110-117
- 作者机构：
  
  西安交通大学航天航空学院，710049，西安
  核动力运行研究所，430074，武汉
  北京航空航天大学自动化工程与电气工程学院，100191，北京
- 作者简介：
  
  作者简介：韩捷（1981—），男，在职博士生，正高级工程师。
- 基金信息：
  
  国家自然科学基金-核电结构老化状态多维电磁正反演体积检测方法研究(52477015);国家重点研发计划-压水堆结构老化状态多维融合评价与寿命评估系统及示范应用(2022YFB3707205)
- DOI：10.7652/xjtuxb202606009
  中图分类号： TG115.28
- 收稿：2025-08-19，
  
  纸质出版：2026-06-10
- 稿件说明：
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韩捷, 陈振茂, 陈兴乐. 采用参数反演的反应堆压力管间距涡流检测方法[J]. 西安交通大学学报, 2026,60(6):110-117.

HAN Jie, CHEN Zhenmao, CHEN Xingle. Eddy Current Testing Method for Pressure Tube Spacing of Heavy Water Reactors Based on Parameter Inversion[J]. Journal of Xi'an Jiaotong University, 2026, 60(6): 110-117.
韩捷, 陈振茂, 陈兴乐. 采用参数反演的反应堆压力管间距涡流检测方法[J]. 西安交通大学学报, 2026,60(6):110-117. DOI： 10.7652/xjtuxb202606009.

HAN Jie, CHEN Zhenmao, CHEN Xingle. Eddy Current Testing Method for Pressure Tube Spacing of Heavy Water Reactors Based on Parameter Inversion[J]. Journal of Xi'an Jiaotong University, 2026, 60(6): 110-117. DOI： 10.7652/xjtuxb202606009.

摘要

针对核电站重水反应堆压力管间距难以进行高效检测的问题，提出了一种基于参数反演的套管间距脉冲涡流检测方法，可用于重水堆压力管-排管、排管-停堆系统液体注入（LISS）管之间的间距检测。首先，基于双层套管建立脉冲涡流检测模型，采用最小二乘法进行参数反演；接着，利用数值迭代算法求解双层套管间距，得到的结果可直接用于检测压力管-排管的间距变化；然后，通过实验标定，拟合得到反演结果中外层排管壁厚与排管-LISS管间距之间的指数函数关系；最后，利用该函数关系确定排管-LISS管之间的间距。实验结果表明：基于参数反演的压力管-排管间距检测误差可控制在±0.5 mm以内，排管-LISS管的间距检测误差可控制在±1.1 mm以内，能够满足反应堆压力管现场检测结果（压力管-排管间距误差为±1mm、排管-LISS间距误差为±2mm）的精度要求。该研究可为压力管道的安全状态评估与风险管理提供可靠依据。

Abstract

To address the challenge of efficiently testing the pressure tube spacing of heavy water reactors（HWRs）in nuclear power plants，a pulsed eddy current testing method for casing spacing based on parameter inversion is proposed.The method is used to test the spacing between pressure tubes and calandria tubes，as well as between calandria tubes and liquid injection shutdown system（LISS）tubes of HWRs.First，a pulsed eddy current testing model was established based on a double-layer casing to perform parameter inversion using the least squares.Next，the doublelayer casing spacing was solved via a numerical iterative algorithm，and the resulting values were directly applicable to testing variations in spacing between pressure tubes and calandria tubes. Subsequently，through experimental calibration，an exponential function relationship was fitted between the wall thickness of the outer calandria tube and the spacing between the calandria tube and LISS tube from the inversion results.Finally，the spacing between the calandria tube and LISS tube was determined using this function relationship.Experimental results show that the error for testing the spacing between the pressure tube and the calandria tube based on parameter inversion can be controlled within±0.5 mm，and that between the calandria tube and the LISS tube within±1.1 mm，meeting the accuracy requirements for on-site testing results of pressure tubes of HWRs（±1 mm for the spacing between the pressure tube and the calandria tube and ±2 mm for the spacing between the calandria tube and LISS tube）.This study provides a reliable basis for safety assessment and risk management of pressure tubes.

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references

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