燃料组件流致振动试验研究

• 作 者: 张晓玲 李天勇 马建中 刘理涛 李朋洲
• 机 构: 中国核动力研究设计院,
• 出 处: 核动力工程
• 发表日期: 2016年S2期
• 关键词: 燃料组件 流致振动 振动特性 定位格架 瞬态工况 试验研究 运动轨迹 燃料棒 试验模型 燃料元件

采用试验的方法对燃料组件的振动特性和流致振动响应进行研究,获得了燃料组件的固有振动特性;各稳态工况的流致振动响应规律:响应随流量的增加而增加;瞬态工况下振幅、频率与时间(流量)的三维瀑布图以及定位格架的运动轨迹。试验所获得的完整、可靠的数据为燃料组件的设计、安全分析和磨蚀试验提供重要的输入参数,为最终的安全评审提供依据。

The vibration characteristics and the induced vibration response of the fuel assemblies were studied by the experimental method, and the natural vibration characteristics of the fuel assemblies were obtained. The law of the induced vibration of each steady state condition: the response increased with the increase of the flow rate, Under the condition of amplitude, frequency and time (flow) of the three-dimensional waterfall map and positioning grid movement trajectory. The complete and reliable data obtained from the tests provide important input parameters for the design, safety analysis and abrasion testing of fuel assemblies, providing a basis for the final safety review.