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[1]曹学文,彭文山,王萍,等.大型LNG储罐罐壁隔热层保冷性能及其优化[J].油气储运,2016,35(4):369-375.[doi:10.6047/j.issn.1000-8241.2016.04.004]
　CAO Xuewen,PENG Wenshan,WANG Ping,et al.Cold performances of insulation layers in large LNG storage tanks and its optimization[J].Oil & Gas Storage and Transportation,2016,35(4):369-375.[doi:10.6047/j.issn.1000-8241.2016.04.004]

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大型LNG储罐罐壁隔热层保冷性能及其优化

《油气储运》[ISSN:1000-8241/CN:13-1093/TE] 卷: 35 期数: 2016年第4期页码: 369-375 栏目: 出版日期: 2016-04-25

Title:: Cold performances of insulation layers in large LNG storage tanks and its optimization

作者:: 曹学文¹; 彭文山¹; 王萍²; 徐艳华¹; 张楠³; 1. 中国石油大学(华东)储运与建筑工程学院;
2. 胜利油田森诺胜利工程有限公司;
3. 吉林油田勘察设计院

Author(s):: CAO Xuewen¹; PENG Wenshan¹; WANG Ping²; XU Yanhua¹; ZHANG Nan³; 1. College of Pipeline and Civil Engineering, China University of Petroleum (Huadong);
2. Shengli Oilfield Sennuo Shengli Engineering Co. Ltd.;
3. Survey and Design Institute of Jilin Oilfield

关键词:: LNG 储罐; 保冷性能; 蒸发率; 保冷损失率; 温度应力; 优化

Keywords:: LNG storage tank; cold performance; vaporization rate; cold loss rate; thermal stress; optimization

分类号:: TE88

DOI:: 10.6047/j.issn.1000-8241.2016.04.004

摘要:: 为了提高大型LNG 储罐罐壁隔热层的保冷性能,对其隔热层厚度进行优化。采用理论分析与数值计算相结合的方法,在不同隔热层厚度下,从储罐的保冷损失、蒸发率、外罐壁受力及变形情况3 个方面来评价隔热层保冷性能,并对隔热层的厚度进行优选。结果表明:太阳辐射对储罐温度场影响较大,在进行LNG 储罐保冷分析及相关设计时不可忽略;LNG 储罐罐壁隔热层(主要指膨胀珍珠岩)厚度与保冷损失率呈反比,当膨胀珍珠岩达到一定厚度后,随厚度增加,保冷损失减小缓慢;随着隔热层厚度的变化,外罐壁的受力和变形较大,因此应该关注不同隔热层厚度对罐壁结构的影响。

Abstract:: To enhance cold performances of thermal insulation layers in large LNG storage tanks, it is necessary to optimize the thickness of such thermal insulation layers. With combination of theoretical analysis and numerical calculation, cold performances of insulation layers with different thicknesses are assessed in respect of cold losses, vaporization rates, and stress and deformation of outer tank walls. Then, optimal thickness of the insulation layer is determined. Following conclusions are drawn from the study. Firstly, solar radiation should not be neglected in the cold performance analysis and related design of the insulation layer because it has a great influence on the temperature field of storage tank. Secondly, thickness of the insulation layer (mainly expanded perlite) is inversely proportional to the cold loss rate. When the thickness of the expanded perlite reaches a certain value, the cold loss rates decrease slowly as the thicknesses increase. Thirdly, changes in thicknesses of the thermal insulation layers will affect stresses and deformation of the outer tank walls. Consequently, cares shall be taken for impacts of insulation layers with different thicknesses on structural safety of tank walls.

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备注/Memo

收稿日期:2015-3-17;改回日期:2015-11-2。
基金项目:国家自然科学基金“基于流体高速膨胀特性的天然气液化机理研究”,51274232。
作者简介:曹学文,男,教授,博导,1966年生,2006年博士毕业于西安交通大学动力工程及工程热物理专业,现主要从事天然气处理与加工、管道完整性管理相关技术的研究工作。地址:山东省青岛经济技术开发区长江西路66号,266580。电话:15053208836,Email:caoxw@upc.edu.cn

更新日期/Last Update: 1900-01-01