太原理工大学学报2026，Vol.57Issue(2)：417-424,8.DOI:10.16355/j.tyut.1007-9432.20230811
特殊进盐工况下高温熔盐储热罐的动态热-机械性能研究
Dynamic Thermal-Mechanical Property of High Temperature Molten Salt Storage Tank under Special Filling Conditions
摘要
Abstract
[Purposes]This research is conducted to address the molten salt leakage phenomenon in the high temperature storage tank during operation.[Methods]A coupled thermal-mechanical nu-merical model based on finite volume method and finite element method was developed and validated with considering of the complex coupling heat transfer and liquid level fluctuation,and the dynamic thermal and mechanical properties of storage tank under two special conditions of first filling and low-temperature filling were numerically studied.[Results]The results show that a non-uniform tempera-ture distribution occurs on tank wall,and the temperature gradient along height direction exceeds the allowable value and shows a sharp rise then stabilization tendency.To improve the temperature unifor-mity of tank wall,the methods of increasing the preheating temperature,reducing the salt filling tem-perature(first filling condition),or setting the auxiliary electrode salt heating furnace(low-tempera-ture filling condition)are suggested in operations.The peak stress of storage tank is significantly af-fected by the temperature difference between wallboard and baseplate,which gradually decreases dur-ing filling process.However,3.6～4.5 h of plastic damage phenomena still exist on fillet weld with the adopted special filling conditions.In order to reduce the peak stress level of storage tank,it is sug-gested that thermal insulating materials should be added in the connection area between wallboard and baseplate to reduce temperature difference and improve safety performance.关键词
熔盐/储罐/温度梯度/应力Key words
molten salt/storage tank/temperature gradient/stress分类
能源科技引用本文复制引用
孙嘉伟,杜保存,雷勇刚,贾凡..特殊进盐工况下高温熔盐储热罐的动态热-机械性能研究[J].太原理工大学学报,2026,57(2):417-424,8.基金项目
国家自然科学基金资助项目(51906172) （51906172）
山西省科技合作交流专项项目(202104041101027) （202104041101027）
山西省科技创新重点人才团队项目(202304051001011) （202304051001011）
山西省基础研究计划资助项目(202303021221021) （202303021221021）
