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[1]朱鸿梅,孙恒,刘宏伟.大型 LNG 储罐角部绝热结构的温度场[J].油气储运,2011,30(01):37-040.[doi:10.6047/j.issn.1000-8241.2011.01.010]
　Zhu Hongmei,Sun Heng,Liu Hongwei.Temperature field on corner adiabatic structure of large-scale LNG storage tank[J].Oil & Gas Storage and Transportation,2011,30(01):37-040.[doi:10.6047/j.issn.1000-8241.2011.01.010]
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大型 LNG 储罐角部绝热结构的温度场

《油气储运》[ISSN:1000-8241/CN:13-1093/TE] 卷: 30 期数: 2011年01期 页码: 37-040 栏目: 出版日期: 2011-01-25
Title:
Temperature field on corner adiabatic structure of large-scale LNG storage tank
文章编号:
1000-8241（2011）01-0037-04
作者:
朱鸿梅1; 孙恒2; 刘宏伟1
1.华北科技学院，北京 101601；
?2.中国石油大学（北京），北京 102249
Author(s):
Zhu Hongmei; Sun Heng; Liu Hongwei
Zhu Hongmei：North China Institute of Science and Technology，Beijing，101601.
关键词:
LNG; 储罐; 角保冷块; 绝热; 温度场分布; 热流密度; 漏热量
Keywords:
LNG; tank; TCP; heat insulation; distribution of temperature field; heat flux density; heat leak
分类号:
TE972
DOI:
10.6047/j.issn.1000-8241.2011.01.010
文献标志码:
A
摘要:
角部绝热结构的设计是大型 LNG 储罐绝热结构设计的关键。将大型 LNG 储罐角部绝热结构视为二维平面问题，利用 ANSYS 软件分析其温度场和热流密度的分布规律。结果表明：热量主要通
过混凝土环梁以及罐底与罐壁的交汇处传入罐内，因此，保证角部保冷绝热结构的连续性非常重要。同时，设计角保冷块（TCP）用以减少沿二次罐底的漏热量，为了增加热阻，通常使其长度在 5 m 左右。根据预冷中储罐角部降温过程的瞬时热分析结果，储罐的降温过程十分缓慢，在预冷初期，罐壁降温较慢且温度梯度小，罐底降温较快且温度梯度大，因此采用低温气体使罐底充分预冷有利于对储罐整体冷却的控制。
Abstract:

Corner adiabatic structure design is crucial for the adiabatic structure design of large-scale LNG storage tank. Regarding the corner adiabatic structure as a 2-dimensional problem，ANSYS software is used to analyze the distribution law of its temperature field and heat flux density. Results show that the heat is mainly transmitted to tank through the concrete ring beam and the joint between tank bottom and tank wall. Therefore，to ensure the continuity of corner adiabatic structure is of great importance. At the same time, when designing the TCP to reduce the heat leak and increase the heat resistance，its general length is about 5 meters. Based on the transient heat analysis on the corner temperature during pre-cooling process，the temperature of tank decreases very slowly. At the initial stage，the tank wall temperature drops slowly with small temperature gradient，while the tank floor temperature decreases relatively fast with large temperature gradient. Therefore using lower temperature gas to precool the tank sufficiently is efficient to control the cooling of the entire tank.

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参考文献/References:

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备注/Memo

作者简介：朱鸿梅，1974 年生，讲师，2007 年博士毕业于上海交通大学制冷与低温工程专业，现主要从事低温与空调技术的研究
工作。13613369081；Email：shqzhu@163.com???? （收稿日期：2010-04-09）

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