摘要
液态铅铋合金是加速器驱动次临界系统(ADS)中散裂靶兼冷却剂的主要候选材料。氧浓度是影响液态铅铋合金(LBE)对结构材料腐蚀的关键因素,而氧传感器是实现液态铅铋合金中氧浓度精确测量的重要部件,本研究设计研制了一种液态铅铋系统氧传感器并基于自主研制的高温液态铅铋合金氧测控预研平台,初步开展了氧饱和LBE中的氧浓度测量实验。实验结果显示,300～400℃的氧饱和LBE中,氧传感器的电压信号(E)随温度(T)变化的实验曲线与理论曲线变化趋势相吻合;相对于300℃<T<350℃温度范围,氧传感器在350℃<T<400℃范围内的测量性能更好,仪器本身的系统误差约为17mV。
Lead bismuth eutectic （LBE） is proposed as the candidate spallation target and coolant materials for the Accelerator Driven Sub-critical System （ADS）. Oxygen concentration is the key factor to affect corrosion of structural materials in LBE. Oxygen sensor is the key component to measure oxygen concentration accurately in LBE. An oxygen sensor measuring oxygen concentration in LBE and the test apparatus of oxygen concentration measurement and control system was designed and made in this study. The measurement of oxygen concentration in LBE performed in the test apparatus was also presented. Preliminary results show that the experimental curve of signal voltage of oxygen sensor corresponded well with the theoretical curve. Besides, performance of oxygen sensor is better between 350 ℃ and 400 ℃ than between 300 ℃ and 350 ℃. The instrumental error of experimental signal value is about 17 mV.
出处
《核科学与工程》
CSCD
北大核心
2012年第2期165-169,共5页
Nuclear Science and Engineering
基金
中国科学院战略性先导科技专项"ADS嬗变系统"项目(XDA03040000)
中国科学院知识创新工程重要方向项目"加速器驱动次临界系统(ADS)前期研究"(KJCX2-YW-N37)
国家自然科学基金重点支持项目"加速器驱动次临界堆瞬态安全过程与影响机理研究"(91026004)
关键词
加速器驱动次临界系统
铅铋合金
氧传感器
accelerator driven sub-critical system
lead bismuth alloy
oxygen sensor
