文献类型：期刊文献

中文题名：循环载荷作用下的高温熔盐储罐设计分析

英文题名：DESIGN AND ANALYSIS OF HIGH TEMPERATURE MOLTEN-SALT STORAGE TANK UNDER CYCLIC LOADING

作者：蔡君[1];刘长军[1];郭洪辛[1];谈建平[1];曾鑫[1];叶冬挺[2]

机构：[1]华东理工大学机械与动力工程学院,上海200237;[2]上海电气电站工程公司,上海201199

年份：2023

卷号：44

期号：4

起止页码：516

中文期刊名：太阳能学报

外文期刊名：Acta Energiae Solaris Sinica

收录：CSTPCD;;EI(收录号：20232914424211);Scopus;北大核心:【北大核心2020】；CSCD:【CSCD_E2023_2024】；

基金：国家自然科学基金(11502082)。

语种：中文

中文关键词：太阳能;热能储存;有限元法;蠕变-疲劳;棘轮

外文关键词：solar energy;thermal energy storage;finite element method;creep-fatigue;ratchetting

摘要：以某大型光热电站高温熔盐储罐为研究对象,采用瞬态热-机械应力分析结果,依据ASME规范对储罐进行棘轮和蠕变-疲劳失效评估。结果显示:正常和异常工况下储罐均未发生棘轮失效,因异常工况下储罐壁面存在165℃的温差,其结构的棘轮应变较正常工况增加72%。异常工况下储罐会发生蠕变-疲劳失效,结构的蠕变损伤和疲劳损伤较不会失效的正常工况分别增加1.4倍和9.0倍。为避免入罐熔盐温度大幅波动给结构安全带来危害,故建议采用熔盐缓冲罐降低温度波动范围。
Taking a high temperature molten-salt storage tank of a large-scale solar thermal power tower station as the research object and according to results of transient thermal-mechanical stress analysis,ratchetting failure and creep-fatigue failure of the storage tank are evaluated based on ASME code.The results show that ratchetting failure of the storage tank will not occur under normal and abnormal conditions.Compared to ratchetting strain of structure under normal condition,the strain under abnormal condition increases by 72%,due to the temperature difference(165 ℃)on the wall of tank.Storage tank will occur creep-fatigue failure under abnormal condition and the value of creep damage and fatigue damage increase by 1.4 times and 9 times respectively compared with normal condition which does not fail.It is suggested that a molten-salt buffer tank is recommended to reduce the hazard to structure caused by temperature fluctuation of molten salt.