核主泵惰转转速计算模型的比较

Comparison of Computation Models for Idle Rotate-speed of Reactor Coolant Pumps

针对核主泵在惰转过程中还要求有足够的冷却流量,利用核主泵瞬态动量守恒方程进行计算和分析,对模型做了合理简化,得到新的转速模型,验证了该模型精准度。结果表明:该模型完全可用于核主泵瞬态分析,可得到不同转动惯量下核主泵达到半流量时惰转时间的变化规律。

Based on the calculation and analysis of the transient momentum conservation equations of the reactor coolant pump, a new speed model has been described and its accuracy has been verified with reasonable simplification of the model against the requirement of enough coolant flow during the idle rotation of the pump. It has been proven that the accuracy of the model is capable of applying to the transient analysis of the reactor coolant pump. The variation law of idle time can be obtained when reactor coolant pump flow gets to half of the initial value under different moments of inertia.