Piping Stress Analysis of Low Temperature Storage Tank for LNG

Abstract:

Finite element method has been used to analysis the stress of inner pipes of low temperature storage tank for LNG caused by temperature, pressure and weight. Filling liquid state, storing liquid state and unloading liquid state are considered in this paper. The results show that the stress of the top pipes would be the largest under filling liquid state which is only little larger than storing liquid state. The stress of the bottom pipes would be the largest under storing liquid state. The deformation of the inner container of the tank would influence the stress distribution. Choosing a flexible structure as designing the bottom pipes is reasonable.

• Periodical: Advanced Materials Research (Volumes 512-515)
• Pages: 965-968
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.512-515.965
• Online since: May 2012
• Authors: Huai Nian Xing, Xiao Peng Zhang, Zeng Li Liu, Li Qiang Jin
• Keywords: LNG, Low Temperature Storage Tank, Pipe Stress

References

[1] SHU Mingshui. Effect of the effective thermal conductivity on the evaporativity of cryogenic tank [J]. Gryogenics, Vol.1 (1995),pp.50-52.

[2] LIU Yanfeng, SU Deguang. Low stress condition design for pressure vessel in low temperature and low temperature [J]. Chlor-Alkali Industry, Vol.3 (2007),pp.44-45.

[3] DING Chang, WANG Rongshun. Application of ANASYS in stress analysis and optimization design of cryogenic pressure vessels[J]. Cryogenics and Superconductivity, Vol.35 (2007), pp.455-457.