盘管式核主泵高压冷却器的流致振动分析  

Analysis of Flow Induced Vibration of the Coil Type High Pressure Cooler on Reactor Coolant Pump

作　　者：韩冬傲 金刚 浦承皓 HAN Dongao;JIN Gang;PU Chenghao(Nuclear and Radiation Safety Center,Ministry of Ecology and Environment,Beijing 100082,China)

机构地区：[1]生态环境部核与辐射安全中心,北京100082

出　　处：《动力工程学报》2023年第10期1303-1307,1334,共6页Journal of Chinese Society of Power Engineering

摘　　要：采用计算流体动力学方法对单个盘管进行了流场分析,并将分析结果应用于盘管的流致振动评定。采用有限元软件Ansys Workbench进行盘管的模态和振型分析,根据盘管管束的固有频率、运行参数和评定依据,对高压冷却器的流致振动特性进行了评定。结果表明:盘管式高压冷却器管束的固有频率、振动幅值均处于安全范围内,可避免由漩涡脱落产生的振动;盘管式换热管外侧的横向流速小于流体弹性失稳临界流速,不会发生流体弹性失稳;湍流抖振的频率及其产生的峰值振幅均远小于限值,不会因湍流抖振导致设备失效。A computational fluid dynamics method was used to analyze the flow field of a single helical coil,and the results were applied to the flow induced vibration evaluation of the coil.Finite element software Ansys Workbench was used to analyze the modal and vibration mode of the coil,and the flow induced vibration characteristics of the high-pressure cooler were evaluated according to the natural frequency,operating parameters and evaluation criteria of the coil tube bundle.Results show that the natural frequency and vibration amplitude of the coil type high pressure cooler bundle are within the safe range,which can avoid the vibration caused by the vortex shedding.The lateral flow velocity of the coil type heat exchange tube is less than the critical flow velocity of fluid elastic instability,and the fluid elastic instability will not occur.The frequency and peak amplitude of turbulent buffeting are far less than the limit value,which will not cause equipment failure.

关 键 词：高压冷却器 盘管 流致振动 

分 类 号：TL353.1[核科学技术—核技术及应用]