典型海洋条件下小型自然循环反应堆流动特性研究  

Research on flow characteristics of a small natural circulation reactor under typical ocean conditions

作　　者：李伟通 于雷[1] 饶彧先 袁添鸿 谢明亮 LI Wei-tong;YU Lei;RAO Yu-xian;YUAN Tian-hong;XIE Ming-liang(College of Nuclear Science and Technology,Naval Univ.of Engineering,Wuhan 430033,China;China Nuclear Power Operating Technology Corporation LTD,Wuhan 430223,China)

机构地区：[1]海军工程大学核科学技术学院,武汉430033 [2]中核武汉核电运行技术股份有限公司,武汉430223

出　　处：《海军工程大学学报》2020年第2期67-73,共7页Journal of Naval University of Engineering

基　　金：国家自然科学基金资助项目(11502298);核反应堆系统设计技术国家重点实验室基金资助项目(HDY-2015004);核安全与仿真技术国防重点学科实验室资金资助项目(2015A041)。

摘　　要：针对小型一体化自然循环反应堆在海洋环境中应用的问题,基于RELAP5/3.3程序构建了海洋条件分析模型,并通过摇摆实验对修改的程序进行了验证,利用修改的程序建立了反应堆系统热工水力模型,分析了横摇、纵摇和起伏运动对反应堆自然循环的影响。结果表明:主换热器的紧凑、对称布置设计降低了横摇的影响,而横摇与纵摇的影响一致,摇摆运动的短周期和大角度对自然循环影响显著;起伏运动对自然循环的影响更为严重,有可能导致堆芯出口温度饱和,威胁反应堆的运行安全。In response to the marine application of small integrated natural circulation reactor,marine condition analytical models are established based on the RELAP5/3.3 code,and the modified code is validated with rolling experiments.Utilizing the modified code,the thermal hydraulics models of reactor system are established,and then the effects of rolling,pitching and heaving motions on reactor natural circulation are investigated.The results indicate that on one hand,rolling influence is reduced and impact of pitching is identical due to the compact and symmetrical arrangement design of main heat exchangers,short period and large angle of rolling result in obvious impact on the natural circulation.On the other hand,heaving motion leads to more severe effect to the natural circulation.Saturation of core outlet temperature may result from heaving motion,which poses a threat to the reactor safety operation.

关 键 词：自然循环 一体化反应堆 热工水力 海洋条件 

分 类 号：TL33[核科学技术—核技术及应用]