摘要
准确测量核动力装置一回路中冷却剂的温度对于核电厂安全可靠的运行至关重要。针对超声测温技术在核反应堆一回路中测量的应用领域,本文首先基于“华龙一号”压水型反应堆主管道一回路冷却剂温度场有限元数值仿真数据,对测温中超声换能器弦式布局中的声波轨迹夹角、换能器的层数和单层换能器数量对于重建后的温度场各项误差的影响规律进行探究,减小声波轨迹与温度分层夹角可提升重建能力。以温度场重建误差最小为目标函数,设计优化算法,在最佳声波轨夹角和最合适的层数、单层数量的情况下对换能器位置进行优化。实验结果表明,最终其测温平均误差在0.15~0.46 K之间,具有工程应用价值。
Accurate measurement of the coolant temperature in the primary loop of nuclear power reactors is crucial for the safe and reliable development of nuclear power plants.In this study,focusing on the application of ultrasonic temperature measurement technology in the primary loop of nuclear reactors,we first use finite element numerical simulation data of the coolant temperature field in the primary loop piping of the pressurized water reactor HPR1000.The study explores the effects of the sound wave trajectory angle in the chordal arrangement of ultrasonic transducers,the number of transducer layers,and the number of elements per layer on various errors in the reconstructed temperature field.Using the minimum temperature field reconstruction error as the objective function,an optimization algorithm is designed to optimize the transducer positions based on the best trajectory angle,and the most suitable number of layers and elements per layer.Experimental results show that the average measurement error ranges from 0.15 K to 0.46 K,demonstrating its engineering application value.
作者
李军怀
朱加良
张林志
张庚辰
Li Junhuai;Zhu Jialiang;Zhang Linzhi;Zhang Gengchen(CNNP Operation Maintenance Technology Co.,Ltd.,Hangzhou,311200,China;Nuclear Power Institute of China,Chengdu,610213,China;School of Electronics and Information Engineering,Sichuan University,Chengdu,610065,China)
出处
《核动力工程》
北大核心
2026年第1期61-75,共15页
Nuclear Power Engineering
基金
中国核动力研究设计院联合基金(SCU&NPIC-LHCX-20)。
关键词
冷却剂
超声测温
换能器布局
重建误差
优化算法
Coolant
Ultrasonic temperature measurement
Transducer layout
Reconstruction error
Optimization algorithm
