水力驱动控制棒极限落棒热态原理实验  

Experiment on Scram for HCRDS in Utmost Accident at High Temperature

作　　者：王金华[1] 薄涵亮[1] 郑文祥[1] 姜胜耀[1] 刘志勇[1] 李军[1] 郑艳华[1] 张佑杰[1] 

机构地区：[1]清华大学核能技术设计研究院,先进反应堆工程与安全教育部重点实验室,100084

出　　处：《核科学与工程》2002年第4期331-335,共5页Nuclear Science and Engineering

摘　　要：针对控制棒水力驱动系统在摩擦力卡棒和倒置等极限工况下的停堆问题 ,根据控制棒水力驱动系统的工作原理 ,提出了步进缸内腔卸压的解决方法 ,并在 2 0 0MW低温核供热堆控制棒水力驱动系统的 1∶1实验台架上进行了这种方法的热态实验。结果表明 :控制棒的落棒速度明显提高 ,棒外与棒内差压在卸压一定时间后能够达到较高的数值。说明水力驱动控制棒在热态摩擦力卡棒和倒置等极限条件下 ,能够克服一定量的摩擦阻力或能够克服重力插入堆芯。Based on the principle of hydraulic control rod driving system (HCRDS), a new scram method was given in this paper, which makes the pressure inside step cylinder release, to solve the scram problem of HCRDS in control rod hang-up accident and inversion conditions, and some experiments at high temperature have been done with the 1∶1 experimental loop of the HCRDS for the 200 MW nuclear heating reactor (NHR-200). The results show that the control rod falls much quickly than that in normal condition. The differential pressure between the outside and inside of step cylinder can reach a big value after the pressure inside step cylinder release. In other word, the hydraulic control rod, which can overcome certain frictional resistance in control rod hang-up accident or its gravity in inversion conditions, may insert the nuclear reactor core. So the new method is an alternative for scram of HCRDS in utmost accident.

关 键 词：水力驱动控制棒 热态原理 低温核供热堆 水力驱动系统 落棒 极限事故 

分 类 号：TL413.2[核科学技术—核技术及应用] TL36