The Features of the Integrated Multilayer-Wrapped High Pressure Vessel and its Fabrication Quality being Inspected by Hydrostatic Test

Abstract:

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The integrated multilayer-wrapped high pressure vessel is a special kind of multilayered pressure vessel whose circumferential weld seams are able to be in an offset pattern. The fabrication quality is assured by controlling the gaps of the layers. The tightness of the wrapped layers can be inspected by the hydrostatic test. The stress at the outer shell of a DN1400 urea synthetic reaction tower of the integrated multilayer-wrapped has been measured at the time of the hydrostatic test. The results show that the longitudinal stress is identical to that of the theoretical value, and the ratio of the measured circumferential stress to the theoretical calculated one of the corresponding solid shell vessel is more than 0.5 when the hydrostatic test pressure reaches the design pressure. The averaged ratio of the measured circumferential stress to the theoretical calculated one is 0.61 of the two measured sections at the hydrostatic test pressure of 20 MPa. The conclusions are: (1) the fabrication quality of the integrated multilayer-wrapped high pressure vessel are able to be assured, and (2) the tightness of the wrapped layers can be inspected by measuring the circumferential stress at outer shell, and compared to that of the theoretical value of the corresponding solid shell vessel, and (3) it is realizable that the circumferential stress at outer shell of the multilayer-wrapped vessel being not less than 50% of that of the theoretical calculated one of the corresponding solid shell vessel at the design pressure.

Info:

Periodical:

Advanced Materials Research (Volumes 201-203)

Edited by:

Daoguo Yang, Tianlong Gu, Huaiying Zhou, Jianmin Zeng and Zhengyi Jiang

Pages:

1539-1543

DOI:

10.4028/www.scientific.net/AMR.201-203.1539

Citation:

P. Y. Song et al., "The Features of the Integrated Multilayer-Wrapped High Pressure Vessel and its Fabrication Quality being Inspected by Hydrostatic Test", Advanced Materials Research, Vols. 201-203, pp. 1539-1543, 2011

Online since:

February 2011

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Price:

$35.00

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