核电站一回路压力边界泄漏监测氟-18传输效率分析

^(18)F Transit Efficiency Analysis for Press Boundary of the First Loop Leak Monitoring in Nuclear Plant

氟-18监测仪研制过程中,确定18F传输效率是一个关键问题。由于实验地点原因,当前仅限于用理论方法求解。通过对热工水力特征以及55/19型号蒸汽发生器结构的分析,研究了蒸汽发生器的传热管泄漏后一回路的18F核素进入取样通道的输运特性,分别选用5种微尘粒径为运算工况,运用FLUENT软件的模拟,进一步得到18F微尘在取样通道中的传输效率。

In research of 18F monitoring system, the determination of ~SF transit efficiency is a key problem. Due to the reason of experiment location which is currently limited to using theory calculation. The article study the transport properties of the 18F from the primary circuit to the sampling eharmel after 55/19 steam generator tube leaking by analysis of the thermo - hydraulic characteristics and the structure of the steam generator, and select five particle size of dust as the operation conditions, then this will further get transmission efficiency by FLUENT simulation.