一体化小型堆自然循环流量间接测量探讨  

Discussion on indirect measurement of natural circulation flow of integrated small reactor

作　　者：王建伟 余建辉[1] 陈丽[1] WANG Jianwei;YU Jianhui;CHEN Li(Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd.,Shanghai,200233,China)

机构地区：[1]上海核工程研究设计院股份有限公司,上海200233

出　　处：《中国高新科技》2024年第23期35-38,共4页

摘　　要：一体化小型堆因采用自然循环而无主管道,传统压水堆的弯管测量一回路流量的方法不再适用。文章在分析各类直接测量方法不适用后,重点分析热平衡法,在反应堆带负荷热平衡后,用二回路所测量的参数间接计算一回路流量,通过分析热平衡法的响应时间与不确定度,确定热平衡法只适用于高负荷时稳态下设计校核,不宜用于流量瞬态测量。Because the integrated small reactor adopts natural circulation and has no main pipeline,the traditional method of measuring primary flow of pressurized water reactor by bending pipe is no longer suitable.After analyzing the inapplicability of various direct measurement methods,this paper focuses on the thermal balance method.After the reactor is loaded with heat balance,the parameters measured in the secondary circuit are used to calculate the primary flow indirectly.By analyzing the response time and uncertainty of the thermal balance method,it is determined that the thermal balance method is only suitable for the design check under the steady state of high load,and is not suitable for the transient flow m easurement.

关 键 词：一体化小型堆 间接测量流量 热平衡测流量 自然循环流量 

分 类 号：TL364[核科学技术—核技术及应用]