浮动核电站抑压水池液舱晃荡研究

Research on Tank Sloshing of Pressure Suppression Pool in Foating Nuclear Power Plants

浮动核电站运行环境与陆地核电站有着显著不同,其专设安全设施的设计需考虑海洋环境适应性,尤其是涉及液体流动的设施更应考察船体运动激励的影响。本文以抑压水池为分析对象,采用有限体积法对液舱晃荡过程进行仿真分析,研究在极限海洋环境下水池内水位的变化,以及有/无制流板情况下水位的区别。研究表明,船体纵/横摇引起的抑压水池最低水位相比于初始水位显著降低,由于抑压水池共振周期与船体晃荡周期错开,因此水位变化主要由晃荡幅值和内部结构件共同作用决定。

The operating environment of floating nuclear power plants is definitely different from that of land nuclear power plants, which should be taken into account in the design of special safety facilities. Especially in the design of the facilities involving liquid flow, the effect of marine environment adaptation under the ship’s motion exciting should be considered. Taking the pressure suppression pool as an example in this paper, finite volume method (FVM) is adopted to conduct simulation analysis for the motion process to study the water level change in extreme working environment and the differences with and without swash plate. Research results show that the lowest water level due to roll and pitch motion is lower than the initial water level. Resonance period of pressure suppression pool is not the same with the ship’s rocking period, thus the water level change mainly depends on the motion amplitude and structural members inside jointly.