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化工学报  2015 

液化天然气储罐顶部进液管的有限元分析

DOI: 10.11949/j.issn.0438-1157.20150715, PP. 354-359

Keywords: 天然气,低温管道,结构强度,温差应力,数值模拟,优化设计

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Abstract:

低温管道系统结构复杂,在工作时承受内压、温差及重力载荷,且承载时系统内各部件又相互影响和制约,采用传统材料力学或结构力学很难分析该系统内各部件应力情况。应用ANSYS软件对某液化天然气储罐的顶部进液管进行了结构强度分析,分析得到了顶部进液管在承受内压、自身重力以及温差应力作用下的变形和应力分布情况,基于此对进液管的布置进行结构调整。研究结果表明:优化设计后进液管道最大主应力小于原设计进液管最大主应力的1/6,极大地保证了储罐在使用过程中的安全性。

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