钠水反应试验系统大泄漏钠水反应压力分布计算分析  

Analysis of Pressure Distribution of Large Leakage Sodium-water Reaction for Sodium-water Reaction Test System

作　　者：侯斌 杨红义[1] 杜丽岩[1] 余华金[1] HOU Bin;YANG Hongyi;DU Liyan;YU Huajin(Division of Reactor Engineering Technology Research,China Institute of Atomic Energy,Beijing 102413,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

出　　处：《原子能科学技术》2020年第1期37-43,共7页Atomic Energy Science and Technology

摘　　要：本文采用一维大泄漏钠水反应分析程序LLEAK,计算和分析了大泄漏钠水反应工况下压力在钠水反应试验系统F204内的分布特性。结果表明:试验系统在水泄漏量为57 g/s、钠循环流量为10 m^3/h和20 m^3/h的工况下,泄漏点压力峰值仅为0.92 MPa,反应器出入口的爆破片均无动作,为保证系统压力处于较低水平,应考虑将爆破片动作整定值从1.0 MPa调低至0.8 MPa;试验系统在水泄漏量为290 g/s时系统压力峰值达到了1.4 MPa,为满足设备安全性,系统全环路的设备应至少能承受2.0 MPa的压力;在较大水泄漏量时,随钠循环流量的增大,将降低钠水反应对缓冲罐压力的影响;在较小水泄漏量时,随钠循环流量的增大,将恶化钠水反应对缓冲罐压力的影响。The one-dimensional large leakage sodium-water reaction analysis program LLEAK was used to analyze the pressure distribution in the sodium-water reaction test system under large leakage conditions. The results show that the bursting discs at inlet and outlet of reaction vessel have no action on the system peak pressure of 0.92 MPa, when the water leakage rate is 57 g/s and the sodium circulation flow rate is 10 m^3/h or 20 m^3/h. Therefore, the bursting disc action setpoint should be reduced from 1.0 MPa to 0.8 MPa to ensure the system pressure is at a low level. Otherwise, the system pressure peak reaches 1.4 MPa at the water leakage rate of 290 g/s. To meet the safety of the equipment, the equipment should be able to withstand at least 2.0 MPa. With the increase of sodium circulation flow rate, the influence of sodium-water reaction on the pressure of buffer tank is reduced at the condition of larger water leakage. And with the increase of sodium circulation flow rate, the influence of sodium-water reaction on the pressure of buffer tank is deteriorated at the condition of smaller water leakage.

关 键 词：大泄漏 钠水反应 压力分布 

分 类 号：TL334[核科学技术—核技术及应用]