摘要
基于非能动余热排出可视化实验系统,利用高速摄像机和高频动态压力传感器等仪器对非能动余热排出管路中的凝结水击现象进行了实验研究,探究凝结水击发生过程汽液相界面变化与压力振荡信号之间的耦合关系,并分析了凝结水击的发生过程、发生位置和发生次数的变化规律。结果表明:凝结水击会经历分层流、波状流、弹状流和汽泡破碎4个阶段,其中分层流和波状流过程管内压力稳定,弹状流过程管内会出现负压,汽泡破碎时会产生巨大的压力脉冲信号;随着加热管热流密度的增加或过冷水温度的升高,凝结水击的发生位置向管路出口方向移动;一定时间内的凝结水击发生次数随热流密度的增加或过冷水温度的升高而减少。
Based on the visualization experimental system of the passive residual heat removal pipe, the condensation induced water hammer(CIWH) in the passive residual heat removal pipeline was experimentally studyed through the high-speed camera and fast dynamic pressure transducers. The coupling relationship between steam-water phase interface evolution and pressure oscillation during the CIWH process was investigated. And the variation laws of the CIWH ’s occurrence process, position, and number were also analyzed. Results show that the CIWH would experience four stages such as stratified flow, wavy flow, slug flow and steam bubble collapse. The pressure in the pipe is stable during stratified flow and wavy flow, which is negative during slug flow.And a huge pressure pulse is generated when steam bubble collapses. The CIWH position will move towards to the pipe outlet and the occurrence number will decrease with the rise of heat flux density and water temperature.
作者
刘文兵
张卓华
蔡海刚
种道彤
赵全斌
严俊杰
LIU Wenbing;ZHANG Zhuohua;CAI Haigang;CHONG Daotong;ZHAO Quanbin;YAN Junjie(State Key Laboratory of Multiphase Flow in Power Engineering,Xi'an Jiaotong University,Xi'an 710049,China;Science and Technology on Reactor System Design Technology Laboratory,Nuclear Power Institute of China,Chengdu 610213,China;Wangjiagou Oil and Gas Storage and Transportation Center,PetroChina Xinjiang Oilfield Company,Urumqi 830011,China)
出处
《动力工程学报》
CAS
CSCD
北大核心
2021年第10期892-897,904,共7页
Journal of Chinese Society of Power Engineering
基金
国家自然科学基金资助项目(51876168)
核反应堆系统设计技术重点实验室以及中国核工业集团有限公司领创科研资助项目。
关键词
非能动余热排出系统
凝结水击
发生位置
压力振荡
passive residual heat removal system
condensation induced water hammer
occurrence position
pressure oscillation
