Stress Analysis and Optimization of Vacuum Insulated Double Wall Pipe for Liquefied Natural Gas Refueling System
Taking the vacuum insulated double wall pipe system of the liquefied natural gas refueling system on dual-fuel vessels as an example,the feasibility of the stress software was verified by comparing the results of theoretical stress calculation and finite element calculation by using stress software.Based on the maximum span calculation and design diagram,stress calculation and analysis of the pipeline system were carried out to determine the maximum stress and overload stress points of the pipeline.By changing the support type from Anc to Guide and reducing the number of supports,the optimization designs of vacuum insulated double wall pipe support were completed.After optimization,the secondary stress of each overload stress point was less than the allowable stress.
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