全厂断电事故下壳内热工水力与非能动安全壳热量导出系统耦合特性实验研究  

Experimental study of the coupling characteristics of a thermal-hydraulic system and passive containment heat removal system in a containment vessel during a station black-out accident

作　　者：李伟[1,2] 初炜钰[1,2] 丛继东 张楠 孟兆明[1,2] 孙中宁[1,2] LI Wei;CHU Weiyu;CONG Jidong;ZHANG Nan;MENG Zhaoming;Sun Zhongning(Heilongjiang Provincial Key Laboratory of Nuclear Power System&Equipment,Harbin Engineering University,Harbin 150001,China;College of Nuclear Science and Technology,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]哈尔滨工程大学黑龙江省核动力装置性能与设备重点实验室,黑龙江哈尔滨150001 [2]哈尔滨工程大学核科学与技术学院,黑龙江哈尔滨150001

出　　处：《哈尔滨工程大学学报》2023年第7期1096-1103,共8页Journal of Harbin Engineering University

基　　金：国家重点研发计划(2020YFB1901404).

摘　　要：为研究全厂断电始发的严重事故下安全壳内热工水力与非能动安全壳热量导出系统的耦合特性,本文利用PANGU安全壳综合试验装置研究了全厂断电事故工况下壳内温度分布特性、氦气分布特性以及壳内流场特性,并分析了非能动安全壳热量导出系统在安全壳与非能动安全壳热量导出系统耦合的复杂热工水力环境下的工作状态。结果表明:在全厂断电事故工况下,非能动安全壳热量导出系统具有足够的排热能力,能够保证安全壳的压力峰值小于设计值,且具有足够的安全裕量。随着事故进程的发展,壳内温度分布逐渐趋于均匀。氦气受到壳内内部环流的作用以及浓度扩散的影响,其分布不均匀性在氦气停止输入后逐渐降低。To further elucidate the coupling characteristics of thermal-hydraulic system and passive containment heat removal system(PCS)in a containment vessel during a station black-out accident(SBO),the characteristics of temperature distribution,helium distribution,and flow field in the containment under SBO conditions were studied using the PANGU containment integrated test facility.Moreover,the working state of the PCS in the complex thermal-hydraulic environment,which includes the containment vessel,was analyzed.The results reveal that under SBO accident conditions,the PCS exhibited sufficient heat removal capacity to ensure that the containment pressure peak value was less than the design value and offered a sufficient safety margin.Furthermore,with the development of the accident process,the temperature distribution in the containment tended to be uniform.Helium gas was affected by internal circulation and concentration diffusion,and the distribution inhomogeneity of the gas gradually decreased after the cessation of the helium input.

关 键 词：全厂断电事故 安全壳 非能动安全壳热量导出系统 耦合特性 热工水力特性 实验装置 氦气分布 壳内流场 

分 类 号：TL333[核科学技术—核技术及应用]