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| 大型LNG储罐在温度应力作用下热角保护厚度的计算 | |
| 引用本文： | 于述强. 大型LNG储罐在温度应力作用下热角保护厚度的计算[J]. 科学技术与工程, 2012, 12(21): 5202-5205 |
| 作者姓名： | 于述强 |
| 作者单位： | 中国石油大学(华东),青岛,266555 |
| 摘 要： | 首先介绍了储罐隔热层的构造.通过理论推导,给出了隔热层、热角保护及外墙温度分布的计算公式.在此基础上,得出外墙温度应力的计算公式,并给出热保护角厚度设计的控制方程.最后对一工程实例进行分析,应用ADINA有限元软件,建立隔热层及外墙温度场计算模型,并进行热-结构耦合计算外墙温度应力.验证了公式的正确性.结果表明在内罐泄漏状态下,外墙温度应力很大,说明热保护角厚度的设计意义重大. |
| 关 键 词： | LNG储罐 温度场计算 温度应力 热-结构耦合 热角保护厚度设计 |
| 收稿时间： | 2012-04-13 |
| 修稿时间： | 2012-04-13 |
CALCULATION OF THE THICKNESS OF HOT CORNER PROTECTION OF LARGE LNG STORAGE TANK UNDER TEMPERATURE STRESS |
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| yushuqiang. CALCULATION OF THE THICKNESS OF HOT CORNER PROTECTION OF LARGE LNG STORAGE TANK UNDER TEMPERATURE STRESS[J]. Science Technology and Engineering, 2012, 12(21): 5202-5205 | |
| Authors: | yushuqiang |
| Affiliation: | (China University of Petroleum(Huadong),Qingdao Province 266555,P.R.China) |
| Abstract: | The general international structure of tank insulation is introduced,and then through the theoretical derivation,the insulating layer,hot corner protection and formula for calculating temperature distribution of exterior wall are given.On this basis,the formula for calculating the external thermal stress is gives and thermal protection angle is given control of the thickness of the design equation.Finally,using ADINA finite element software insulation and the wall temperature field model and calculate the heat-wall structure coupled thermal stress are established,and through the analysis of a project example the correctness of the formula is verified.The results show that in the leakage state,temperature stress of external wall is large,indicating that it is significant to design the thickness of hot corner protection. |
| Keywords: | LNG storage tank temperature field calculation temperature stress thermal-structural coupled design of the thickness of hot corner protection |
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