安注管道不同破口尺寸条件下非能动安注系统运行特性试验研究  

Experimental Study of Passive Injection System Operation Characteristics under Different DVI Break Size Conditions

作　　者：黄志刚[1] 彭传新[1] 张妍[1] 黎阳[1] 昝元峰[1] 卓文彬[1] 

机构地区：[1]中国核动力研究设计院中核核反应堆热工水力技术重点实验,成都610213

出　　处：《核动力工程》2017年第4期70-75,共6页Nuclear Power Engineering

摘　　要：对安注管道不同破口尺寸条件下的一体化模块式小型堆非能动安注系统运行特性进行了实验研究。结果表明:安注管道破口面积越大,破口侧和非破口侧堆芯补水箱系统注射流量差别越大;在破口面积较大的情况下,安注箱系统注射对堆芯补水箱系统注射有明显地影响;在堆芯补水箱系统投入初期运行方式为水-水循环,在压力平衡管线出现蒸汽后,运行方式为汽-水循环,注射流量会明显增加。安注箱通过氮气膨胀驱动,注射流量受系统降压速率影响。In this paper, the passive injection system operation characteristics of an integrated modular small reactor under different break sizes of direct vessel injection line （DVI） are studied by experiments. The test result shows that the bigger the safety injection pipeline break area is, the bigger the difference injection flow rate of the break side and non beak side core makeup tank system is. The accumulator injection has obvious effect on the core makeup tank injection in the case of large break area. In the early operation stage of the core makeup tank system, the operation mode is water-water cycle. After the steam flow into the pressure balance pipeline, the operation mode is steam-water cycle. The accumulator is driven by nitrogen expansion, and the injection flow rate is affected by the pressure drop rate of the system.

关 键 词：安注管道 破口 堆芯补水箱(CMT) 安注箱 

分 类 号：TK124[动力工程及工程热物理—工程热物理]