应用于钠冷快堆的超临界二氧化碳动力转换系统研究  

Supercritical Carbon Dioxide Power Conversion System Applied to Sodium-cold Fast Reactor

作　　者：杨军[1] 赵全斌[2] 王晓坤[1] 种道彤[2] 叶尚尚[1] 王利霞[1] 杨晓燕[1] 杨红义[1] YANG Jun;ZHAO Quanbin;WANG Xiaokun;CHONG Daotong;YE Shangshang;WANG Lixia;YANG Xiaoyan;YANG Hongyi(Division of Reactor Engineering Technology Research,China Institute of Atomic Energy,Beijing 102413,China;State Key Laboratory of Multiphase Flow in Power Engineering,Xi’an Jiaotong University,Xi’an 710049,China)

机构地区：[1]中国原子能科学研究院反应堆工程技术研究部,北京102413 [2]西安交通大学动力工程多相流国家重点实验室,陕西西安710049

出　　处：《原子能科学技术》2020年第10期1817-1824,共8页Atomic Energy Science and Technology

基　　金：国家重点研发计划资助项目(2016YFE0100800)。

摘　　要：超临界二氧化碳(SCO 2)布雷顿循环由于高效、紧凑和可避免钠水反应等特性而成为钠冷快堆的理想动力转换系统。本文以1200 MWe大型池式钠冷快堆为系统热源,钠回路温度及热负荷为循环系统运行边界,对比研究了不同SCO 2布雷顿循环系统性能和关键设备性能的变化规律。研究发现,级间冷却再压缩循环与钠冷快堆热源特性匹配性最佳,且循环效率最高(40.7%)。进而研究了不同运行参数对级间冷却再压缩循环效率的影响规律,给出了循环系统效率对各关键影响因素的敏感度,发现循环系统效率对冷端参数的敏感度最强,其次为分流比和透平入口参数,对主压缩机级间压比的敏感度最弱。Because of the high efficiency,compactness and avoiding sodium water reaction,the supercritical carbon dioxide(SCO 2)Brayton cycle is an ideal power conversion system for sodium-cooled fast reactors.In this paper,the 1200 MWe Sodium-cooled Fast Reactor was used as the heat source of the system,and the temperature and heat load of the sodium loop were used as the operating boundary of the circulation system.The system performance and key equipment performance of different supercritical carbon dioxide Brayton cycles were compared.The coupling between the inter-stage cooling and recompression cycle and the characteristics of the heat source of the sodium-cooled reactor is the best,and the cycle efficiency is the highest(40.7%).Furthermore,the influence of different operating parameters on the efficiency of the inter-stage cooling and recompression cycle was studied,and the sensitivity of the efficiency of the circulation system to each of the key influencing factors was given.It is found that the efficiency of the circulation system is the most sensitive to the cold-end parameters,followed by the split ratio and turbine inlet parameters,and the weakest to the main compressor inter-stage pressure ratio.

关 键 词：钠冷快堆 超临界二氧化碳 布雷顿循环 敏感度分析 

分 类 号：TL343[核科学技术—核技术及应用]