静态铅铋中Pt／Air型氧传感器性能初步研究  

Study on Stability and Veracity of Pt/Air Sensor in Liquid Lead-bismuth

作　　者：张敏[1,2] 王艳青[1,2] 吴斌[2] 武欣[2] 高胜[2] 黄群英[1,2] 

机构地区：[1]中国科学技术大学,安徽合肥230027 [2]中国科学院核能安全技术研究所中国科学院中子输运理论与辐射安全重点实验室,安徽合肥230031

出　　处：《核科学与工程》2015年第1期1-7,共7页Nuclear Science and Engineering

基　　金：中国科学院战略性先导科技专项(XDA03040000);中国科学院知识创新工程重要方向项目(095CF2R211,KJCX2-YWN37);国家自然科学基金(51301163)

摘　　要：液态铅铋合金氧测控作为加速器驱动次临界系统（ADS）的关键技术之一，对抑制结构材料腐蚀具有重要作用。为深入开展氧测控技术研究，自主研制液态铅铋氧测量及控制实验装置，并基于该装置开展Pt／Air型氧传感器在饱和氧浓度下的稳定性与精确性测试实验。结果显示，在625～786K温度范围内，Pt／Air型氧传感器电压信号经过传热产生的弛豫（〈750s）之后稳定性表现良好，测量值的最大绝对偏差为10mV，最大相对偏差为1．5％，与理论值符合较好，其偏差主要来自热电压及氧化物的影响。Measurement and control of oxygen content in liquid lead-bismuth is one of the key technologies in accelerator-driven subcritical system （ADS）. It plays a vital role to resist structural material corrosion. Liquid lead-bismuth oxygen measurement and control experimental device was designed and constructed independently to study the key technology. Pt/Air reference electrode oxygen sensors were tested for the stability and veracity in the saturated oxygen concentration with the device. The results showed that in the temperature ranging from 625 ~ 786 K, it performed good stability after relaxation time less than 750 s for thermal equilibrium relaxation affect by the low heat conduction of YSZ ceramic tube. The voltage signal of Pt/Air sensor was in good agreement with the theoretical value, with absolute deviation less than 10 mV and relative deviation less than 1.5~. Reason for deviation came from thermoelectric voltages and oxide impurities.

关 键 词：加速器驱动次临界系统 液态铅铋合金 氧测控 氧传感器 稳定性 精确性 

分 类 号：TH832[机械工程—仪器科学与技术]