球床高温气冷堆燃料元件气力输送过程仿真

摘要

燃料装卸系统是球床模块式高温气冷堆示范电站的一个重要系统,也是实现不停堆换料的关键.为开发用于全球首台高温气冷堆全范围模拟机的球流系统仿真工具以及为优化燃料装卸系统设计提供依据,研究了燃料装卸系统中球形燃料元件的气力输送过程,并建立了球流管路气力输送动力学模型.以上述模型为基础,分析了燃料球在管路中的运动特性及燃料球对气力输送的气流速度影响.结果表明,理论分析与实验结果吻合较好.%The fuel handling system is an important system for on-load refueling in pebble-bed modular hightemperature gas-cooled reactor.To develop the first full scope simulator for pebble-bed modular high-temperature gas-cooled reactor in the word and provide references for the design and optimization of the fuel handling system,a dynamic model of pneumatic conveying for spherical fuel element in fuel handling system was established to describe the pneumatically conveying process.The motion characteristics of fuel elements in pipeline and the effect of fuel ele ments on gas velocity were studied based on the model.The results show that the theoretical analyses are consistent with the experimental data.