钠冷快堆冷阱温度自动控制方案的设计与验证  

Design and Validation of Automatic Temperature Control Scheme for Cold Trap of Sodium-Cooled Fast Reactor

作　　者：刘海珍 万继华[1] LIU Haizhen;WAN Jihua(China Institute of Atomic Energy,Beijing 102413,China)

机构地区：[1]中国原子能科学研究院,北京102413

出　　处：《自动化仪表》2023年第6期24-29,35,共7页Process Automation Instrumentation

摘　　要：钠冷快中子增殖反应堆采用钠作为冷却剂,通过冷阱将一、二回路钠中以氧和氢为代表的各种杂质含量控制在规定的范围之内。通过分析冷阱冷却系统的工艺流程及控制要求,设计了钠冷快堆一回路冷阱冷却系统温度自动控制方案。该方案利用GSE仿真平台的Jtopmeret对冷阱的温度控制过程进行工艺模型搭建。针对开式空气循环和闭式空气循环2种冷阱冷却方式,设计了控制方案。通过动态测试,验证了该控制方案的可行性。该控制方案中串级控制对冷阱入口钠温、钠处理量和冷阱出口钠温设定值的波动都有较好的控制效果。比例积分微分(PID)控制则能较好地抑制冷却水流量和温度的干扰对冷阱温度的影响。该研究对于其他钠冷快堆项目冷阱相关的监控系统设计具有重要参考价值。Sodium-cooled fast neutron breeder reactors use sodium as coolant,and the content of various impurities represented by oxygen and hydrogen in the first and second circuit sodium is controlled within the specified limits by cold traps.By analyzing the process flow and control requirements of the cold trap cooling system,an automatic temperature control scheme for the cold trap cooling system of the first loop of the sodium-cooled fast breeder reactor is designed.The scheme utilizes the Jtopmeret of GSE simulation platform to build a process model for the temperature control process of the cold trap.The control scheme is designed for 2 types of cold trap cooling methods:open air circulation and closed air circulation.The feasibility of the designed control scheme is verified through dynamic tests.The cascade control in this control scheme has a good control effect on the fluctuation of the cold trap inlet sodium temperature,sodium treatment volume and cold trap outlet sodium temperature settings.The proportional integral differential(PID)control can better suppress the influence of the disturbance of cooling water flow and temperature on the cold trap temperature.This study has important reference value for the design of cold trap related monitoring system in other sodium-cooled fast reactor projects.

关 键 词：钠冷快堆 冷阱冷却 自动温度控制 串级控制 GSE仿真平台 模拟仿真 

分 类 号：TH-39[机械工程]