反应堆直接安注结构优化及三维流动仿真研究
Study on Structural Optimization and Three-dimensional Flow Simulation of Reactor Direct Safety Injection
朱紫豪 1李国栋 1于天达 1莫锦涛 1谭佳琦 1田长庆1
作者信息
- 1. 中国核动力研究设计院 核反应堆系统设计技术重点实验室,四川 成都 610213
- 折叠
摘要
安注结构对于压水堆一回路的压力边界失效时防止堆芯将因为持续的发热而"蒸干"有着重要作用.为此,本文通过对安注结构进行建模仿真计算,分析安注结构对于流动的影响,并基于代理模型进行多目标优化,得出文丘里形式的直接安注结构安注管有两个作用.一是节流作用,防止反应堆内的流体倒流,二是与挡流板配合使用,防止安注冷水在大流量时冲到吊篮组件上.通过优化使导流板两侧流动顺畅,导流板两侧压力分布接近,都较为均匀,优化后的导流板受力降低,优化的效果较为明显.
Abstract
The safety injection structure plays an important role in preventing the core from"steaming dry"due to continuous heating when the pressure boundary of the primary circuit of PWR fails.In this paper,the influence of safety injection structure on flow is analyzed by modeling and simulation calculation,multi-objective optimization is carried out based on proxy model,it is concluded that the safety injection pipe with venturi direct safety injection structure has two functions.One is throttling to prevent the fluid in the reactor from flowing backwards,and the other is cooperating with the baffle to prevent the cold water injected from rushing to the hanging basket assembly.Through optimization,the flow on both sides of the guide plate is smooth,the pressure distribution on both sides of the guide plate is close,and the stress on the optimized guide plate is reduced,and the optimization effect is obvious.
关键词
安注结构/流动仿真/优化Key words
safety injection structure/flow simulation/optimize引用本文复制引用
出版年
2024
NETL
NSTL
万方数据