核电厂控制棒组件冷却系统的评估和优化

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Evaluation and Optimization of Ventilation Systems of Control Rods in Nuclear Power Plants

CNNC Key Laboratory on Nuclear Reactor Thermal Hydraulics Technology, Nuclear Power Institute of China, Chengdu, 610041, China

摘要: 采用计算流体力学(CFD)数值模拟与实际实验参数对比分析风冷系统冷却特性,评估风冷系统设计合理性并优化限值。结果表明,控制棒数量的增加,有利于风量分配的均匀化和风冷系统冷却效率的提高;虽然回风温度是评价风冷系统冷却效率的关键指标参数,但应综合考虑反应堆控制棒的数量和分布,随着控制棒数量的变化,回风温度限值应相应变化。
- 控制棒组件 /
- 风冷系统 /
- 计算流体力学(CFD) /
- 评估 /
- 优化
Abstract: In order to evaluate the security of the system and optimize its limit value, the characteristics of the ventilation system is analyzed by comparing the CFD calculation results and the experimental parameters. The results show that the increasing of the control rods is beneficial to both the uniform distribution of the air flow and the cooling efficiency of the system, which promotes the operation safety of the control rod drive mechanism. Although the outlet temperature of the ventilation system is a key index as the cooling efficiency, the number and distribution of the control rods should be considered together. The limit value of the outlet temperature should be changed as the control rod is added.
- Control rods /
- Ventilation system /
- CFD /
- Evaluation /
- Optimization