超临界水喷放泄压因素的权重计算  

Weight Calculation of Gush Pressure Relief Factors of Supercritical Water

作　　者：周涛[1,2,3,4] 秦雪猛 朱亮宇[1,2,3] 李子超 陈杰 Zhou Tao;Qin Xuemeng;Zhu Liangyu;Li Zichao;Chen Jie(School of Nuclear Science and Engineering,North China Electric Power University,Beijing 102206,China;Institute of Nuclear Thermal-Hydraulic Safety and Standardization,North China Electric Power University,Beijing 102206,China;Beijing Key Laboratory of Passive Safety Technology for Nuclear Energy,North China Electric Power University,Beijing 102206,China;Southeast University,Nanjing 211189,China)

机构地区：[1]华北电力大学核科学与工程学院,北京102206 [2]华北电力大学核热工安全与标准化研究所,北京102206 [3]非能动核能安全技术北京市重点实验室,北京102206 [4]东南大学,南京211189

出　　处：《核安全》2019年第6期62-66,共5页Nuclear Safety

基　　金：北京市自然基金（3172032）;国家电投集团科学技术研究院有限公司（KH18010087）;中国原子能科学研究院（2017-DBGI-FWCG-0016)

摘　　要：超临界水喷放时会发生剧烈变化,严重危害超临界水堆的安全性及稳定性。本文通过自编Small-break程序计算不同影响因素下的超临界流体泄压速率,并利用多因素方差分析方法对小破口泄压因素进行权重计算。计算结果表明:在19~25 MPa范围内的超临界流体初始压力越低,破口处泄压速率越快;在破口发生前期,初始温度越高,破口处泄压速率越慢,但破口发生后期其泄压速率反而越快;破口面积越大,泄压速率越快,但容积越大,泄压速率越慢;泄压因素的权重占比从高到低依次为破口面积、容积、初始压力和初始温度。The safety and stability of supercritical water reactor will be seriously jeopardized when supercritical water is sprayed.The pressure release rate of supercritical fluid under different influence factors was calculated by the self-compiled program of small-break,and the weight of pressure release factor of small fracture was calculated by the method of multivariate analysis of variance.The calculation results show that the lower the initial pressure of the supercritical fluid in the range of 19~25 MPa,the faster the pressure relief rate at the fracture,the larger the fracture area,the faster the pressure relief rate,but the larger the volume,the slower the pressure relief rate,the weight ratio of the pressure relief factors from high to low was,fracture area,volume,initial pressure and initial temperature.

关 键 词：超临界水 小破口 泄压速率 破口面积 

分 类 号：TL334[核科学技术—核技术及应用]