包覆燃料颗粒生产线压力平衡分析及系统优化  

System Pressure Assessment and Optimization of Coated Fuel Particle Production Line

作　　者：刘荣正[1] 刘马林[1] 邵友林[1] 刘兵[1] 宋飞飞[2] 

机构地区：[1]清华大学核能与新能源技术研究院先进核能技术协同创新中心,北京100084 [2]中核北方核燃料元件有限公司,内蒙古包头014000

出　　处：《原子能科学技术》2016年第9期1653-1657,共5页Atomic Energy Science and Technology

基　　金：国家科技重大专项资助项目(ZX060901);国家自然科学基金资助项目(51302148;21306097);清华大学自主科研计划资助项目(20131089217;20121088038);北京高等学校青年英才计划资助项目(YETP0155)

摘　　要：高温气冷堆使用的TRISO型包覆燃料颗粒采用流化床化学气相沉积法制备。实验研究发现,在包覆燃料颗粒的生产过程中,化学气相沉积过程的压力显著影响包覆燃料颗粒的性能指标。研究了包覆过程中反应压力的变化对包覆层的显微形貌及密度的影响规律。基于对化学气相沉积反应压力的控制需求,进行生产线全系统压力监测及分析,获得整个生产线压力平衡及稳定操作的值。对生产线进行了系统优化,提出从后端调节压力的方法,通过系统的压力平衡,实现了对反应压力的有效控制,保证了生产过程稳定性。研究结果指出,全系统压力平衡分析是一种有效的生产线评估手段,可用于故障分析排除、分级连锁设计以及系统优化等。Tristructural-isotropic （TRISO） coated fuel particles in high temperature gas- cooled reactor （HTGR） were fabricated using fluidized bed chemical vapor deposition （FB-CVD） method. It is found that the pressure of the CVD system named reaction pressure is a key parameter which can influence the properties of the coated fuel particle by experimental study. In this work, the variation of the reaction pressure in the coating process and its influence on the microstructure and density of the coating layers were in- vestigated. To control the reaction pressure, the concept of whole production line pres- sure assessment was proposed. Pressure analysis and balance were obtained by monito- ring some pressure points in the production line. Based on the system pressure assess-the ted the pressure optimization was obtained which could keep whole production line and that the pres can be used to sure analysis production li keep the stability of is an effective method ne troubleshooting, system optimization in the future. the pressure balance of rocess. It can be indica- to assess the production line, w hierarchical interlocking design hich and

关 键 词：包覆燃料颗粒 高温气冷堆 生产线 压力平衡分析 

分 类 号：TL352[核科学技术—核技术及应用]