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AP1000核电系统属于第3代核电堆型,在我国核电发展中有望成为主力堆型.该堆型采用了非能动式堆芯冷却系统,全压补水箱(CMT)是其主要设备之一.针对全压补水箱补水系统的数学建模与数值模拟,能够对其可靠性进行验证,亦能够对正常及事故工况下全压堆芯补水系统的瞬态响应特性作出预测与评价.基于简化的全压堆芯补水箱补水系统,建立了双罐体4区非平衡模型,并运用Simulink动态仿真的方法进行数值模拟,得到了系统内压力、液位等主要参数随时间的变化情况.仿真结果与文献中类似模型的试验、仿真结果参数变化规律一致,能够为CMT补水系统瞬态分析提供理论依据.
The AP1000 nuclear power system belongs to the third generation nuclear reactor and is expected to become the main reactor in the development of nuclear power in our country. The reactor adopts passive reactor core cooling system and the full pressure replenishment tank (CMT) is one of its major equipment. The mathematical modeling and numerical simulation of the replenishment system of full pressure compensating water tank can verify its reliability and predict and evaluate transient response characteristics of full pressure reactor core replenishment system under normal and accident conditions.Based on the simplified Pressure reactor core replenishment system, a four-zone non-equilibrium model of double-tank was established and simulated by Simulink dynamic simulation method, and the changes of the main parameters such as pressure and liquid level in the system over time were obtained.The simulation results Similar to the literature in the model test, the simulation results of the parameters of the same change, can provide a theoretical basis for transient analysis of CMT recharge system.