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首先对非能动安全型核电站钢制安全壳承受内部和外部压力载荷的工况进行分析,对再循环通风冷却控制系统在相应运行工况下的运行效果进行说明。并基于仿真建模软件对钢制安全壳内部的反应堆一回路设备及再循环通风冷却控制系统进行建模,完成对钢制安全壳承受内外部压力载荷事故工况的模拟计算。通过模拟计算的结果分析了钢制安全壳承受内部和外部压力载荷的变化过程,及相应工况下安全壳内再循环通风冷却控制系统对钢制安全壳承压的影响。
First of all, the working conditions of internal and external pressure load of steel containment in passive safety nuclear power plant are analyzed, and the operation effect of recirculation ventilation and cooling control system under corresponding operating conditions is described. Based on the simulation modeling software, the first loop reactor equipment and the recirculation ventilation and cooling control system inside the steel containment were modeled to complete the simulation calculation of the internal and external pressure load accidents of the steel containment. Through the simulation results, the change process of internal and external compressive load of steel containment was analyzed and the influence of containment recirculation ventilation and cooling control system on containment of steel containment under the corresponding conditions was analyzed.