平面激光诱导荧光法硼浓度分布特性研究  

A study of the distribution characteristic of boron concentration based on PLIF

作　　者：张琦 谭思超 刘宇生[2] 许超 赵婷杰 ZHANG Qi;TAN Sichao;LIU Yusheng;XU Chao;ZHAO Tingjie(Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, Harbin Engineering University,Harbin 150001,China;Nuclear and Radiation SafetyCenter,MEP,Beijing 100086,China)

机构地区：[1]哈尔滨工程大学核安全与仿真技术国防重点学科实验室,黑龙江哈尔滨150001 [2]环境保护部核与辐射安全中心,北京100086

出　　处：《哈尔滨工程大学学报》2018年第5期876-880,共5页Journal of Harbin Engineering University

基　　金：国家科技重大专项项目(2015ZX06002007)

摘　　要：针对高浓度硼酸溶液进入反应堆压力容器后的对堆芯安全性的影响,本文应用平面激光诱导荧光技术对压力容器环形下降段内流体混合过程进行了实验研究和理论分析。通过平面激光诱导荧光技术对流体混合过程及浓度场分布进行定量的可视化测量,采用标定法测量了不同流速下观测区域内浓度场分布状况。实验结果表明:当安注速度较大时,同一截面上浓度分布趋于均匀;质量力会引起硼溶液在竖直方向的扩散,造成安注口下方流道截面的混合程度相比于其他位置更好。Contrapose the effect of high concentration boric acid solution on reactor core safety after entering reactor pressure vessel,this paper carried out experimental study and theoretical analysis on the process of the fluid mixing between boron solution and underborated slug in the reactor downcomer based on the planar laser induced fluorescence. Visualize measurement was achieved by the transparent reactor pressure vessel model,quantitative analysis was carried out under different velocity in the observation area. The results indicated the evenness of boric solution increases by increasing injection velocity; the effect of mass force leads vertical settlement and ideal mixing in the low position of the downcomer.

关 键 词：平面激光诱导荧光技术 浓度分布 比例法 堆芯应急冷却 反应堆压力容器 环形下降段 质量力 

分 类 号：TL331[核科学技术—核技术及应用]