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Stress Analysis of High Temperature Piping in Offshore Platform
Hong-mei XU, Lei LI, Hua-wei HAN, Gong ZHANG, Tan-long ZHANG
Ocean Engineering Equipment and Technology    2015, 2 (1): 36-39.   DOI: null
Abstract   (178 HTML2 PDF (1644KB)(206)  

The temperature of exhaust pipe in offshore platform is very high. This high temperature will cause thermal stress in piping system and large force to connecting machine and hull structure during piping thermal expansion and contraction. Selection of expansion joint, pipeline arrangement, as well as type and structure of the supports have direct effects on the safety of connecting machine and hull structure. Static analysis and modal analysis are carried out with CAESARⅡ piping stress analysis software. The flexible factors of bend and tee of large diameter pipe are included as references. According to the calculation results, the primary stress and secondary stress of high temperature piping system can meet the standards.


节点号 位移/mm 转角/(°)
X Y轴 Z轴 X轴 Y轴 Z轴
29 1.780 2.670 15.787 0.0129 0.0086 0
43 1.632 2.448 14.744 0.0129 0.0086 0
45 2.059 3.088 23.913 0.0125 0.0083 0
50 2.170 3.255 27.749 0.0124 0.0083 0
60 0.002 0.003 -15.601 0.0001 0.0001 0
70 0.001 0.001 -10.651 0 0 0
76 0 0 15.254 0 0 0
80 0 0 27.201 0 0 0
90 0 0 32.002 0 0 0
115 0.029 0.012 17.935 -0.0002 0.0006 0
120 0.050 0.021 27.340 -0.0003 0.0006 0
137 0.130 0.088 29.428 -0.0012 -0.0015 -0.0001
380 0 0 14.903 0 0 0
420 -0.980 0.071 24.981 -0.0010 0.0713 -0.0003
Table 3 Displacement results of part of piping nodes
Extracts from the Article
表3   管路部分节点位移结果
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