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研究建立了钠冷快堆蒸汽发生器在单管束发生双端断裂情况下钠 水反应中气泡从球形到柱状的变温绝热生长模型 ,及采用一维特征线方法建立的压力波在快堆二回路中的传播模型。模型中考虑了爆破膜、管壁弹性变形和气蚀的影响。对在两相汽水混合区发生大泄漏后有、无爆破膜情况下的钠 水反应和二回路压力传播瞬态进行了计算 ,定性分析了其影响以及爆破膜在钠 水反应中的安全保护作用。
The temperature-dependent adiabatic growth model of bubbles from sphere to column in sodium-water reaction under the condition of double-ended fracture of sodium-cooled fast reactor was established and the pressure wave established by one-dimensional characteristic line method was applied to the second reactor In the propagation model. The model considers the influence of the bursting membrane, the elastic deformation of the pipe wall and cavitation. The sodium-water reaction and the transient propagation of the pressure in the secondary loop after a large leak in the mixed zone of two-phase steam and water have been calculated. The influence of the leakage and the safety protection of the rupture membrane in sodium-water reaction have been qualitatively analyzed .