基于物理去除方法的反应堆及一回路系统腐蚀产物过滤系统设计  

Design of Corrosion Product Filtration System for Reactor and Primary System Based on Physical Removal Method

作　　者：苏志勇[1] 曲德庆 龚剑 罗毅明 丁然[1] 隆涛 SU Zhiyong;QU Deqing;GONG Jian;LUO Yiming;DING Ran;LONG Tao(Nuclear Power Institute of China,610065,Chengdu;Unit 92730 of the People's LiberationArmy,572099,Sanya)

机构地区：[1]中国核动力研究设计院,成都610065 [2]中国人民解放军92730部队,三亚572099

出　　处：《东方电气评论》2024年第4期21-25,共5页Dongfang Electric Review

摘　　要：随着核反应堆服役年限的增加,反应堆一回路系统的设备、管道、阀门内表面存在一定的剥落,形成腐蚀产物悬浮于冷却剂中,最终变为活化腐蚀产物。随着活化腐蚀产物的不断增加会造成冷却剂中总固水平增加和反应堆厂房内空间剂量水平升高,也会对设备的运行造成一定的影响。为解决这一问题,本文采用在一回路系统上增设并联支路,支路中设置腐蚀产物过滤系统,采用物理去除的方法不断对冷却剂过滤去除其内的腐蚀产物,进而降低冷却剂中的总固水平。对于腐蚀产物过滤系统的过滤器,采用碟片式结果,采用有限元方法进行了过滤器单层固液两相分离仿真。经工程应用验证表明,本文设计的腐蚀产物过滤系统可有效降低冷却剂中的总固水平,表明对去污冷却剂中的腐蚀产物效果明显。With the increase of the service life of nuclear reactors,the inner surface of the equipment,pipes and valves of the reactor primary circuit system has some spalling,forming corrosion products suspended in the coolant and eventually becoming activated corrosion products.With the continuous increase of activated corrosion products,the total solid level in the coolant and the spatial dose level in the reactor building will increase,which will also have a certain impact on the operation of the equipment.In order to solve this problem,a parallel branch is added to the primary system,and a corrosion product filtration system is set up in the branch,and the corrosion products in the coolant are constantly filtered and removed by physical removal method,thus reducing the total solid level in the coolant.For the filter of corrosion product filtration system,the simulation of single-layer solid-liquid two-phase separation of the filter was carried out by finite element method using the disc results.The engineering application verification shows that the corrosion product filtration system designed in this paper can effectively reduce the total solid level in the coolant,indicating that the effect on the decontamination of corrosion products in the coolant is obvious.

关 键 词：反应堆及一回路系统过滤系统 腐蚀产物 物理去除 过滤器 有限元方法 

分 类 号：TM623[电气工程—电力系统及自动化]