液态铅铋合金氧计探头设计及优化

Optimization Design of Oxygen Meter Probe for Liquid Lead Bismuth Alloy Oxygen Measurement

液态铅铋合金的测氧和氧控,对抑制结构材料腐蚀具有重要作用,是铅基反应堆工程应用需解决的关键技术问题之一。为支持深入开展液态铅铋合金氧测控技术研究,本文基于液态铅铋合金测氧原理及其测量需求,自主设计研制了用于液态铅铋合金测氧的氧计探头,并利用某铅铋合金静态腐蚀试验釜验证了氧计探头的测量性能,结果表明,所设计的氧计探头可在200~550℃交变高温情况下实现测氧,测量范围达到10^(-6)~30 ppm,泄漏率不高于10^(-6)(Pa·m^(3))/s。

The oxygen measurement and control of liquid lead bismuth alloy plays an important role in suppressing corrosion of structural materials,and is one of the key technical problems that need to be solved in the engineering application of lead based reactors.In order to support in-depth research on liquid lead bismuth alloy oxygen measurement and control technology,based on the principle and measurement requirements of liquid lead bismuth alloy oxygen measurement,this paper independently designed and developed an oxygen meter probe for liquid lead bismuth alloy oxygen measurement.The measurement performance of the oxygen meter probe was verified using a static corrosion test vessel of a certain lead bismuth alloy.The results showed that the designed oxygen meter probe can achieve oxygen measurement at high temperatures ranging from 200 to 550℃,The measurement range reaches 10^(-6)-30 ppm,and the leakage rate is not higher than 10^(-6)(Pa·m^(3))/s.