Stress Analysis for Electric Stop Valve of Nuclear Power Plant Considering Action of Preload and Stem Force

Abstract:

The finite element model of electric stop valve with flange bolts preload and valve stem force was established to improve the valve stress calculation method which was based only on action of fluid pressure, thermal stresses and pipe reaction forces. The principle and application of pretension load elements were expounded. By ANSYS, the stresses of this valve with preload and valve stem force were calculated, and the Mises equivalent stresses contour and some values of key position of whole valve were obtained. The results indicate the influence of the stresses on the valve caused by preload of bolt mounted on the flange and valve stem force can not be ignored.

• Periodical: Applied Mechanics and Materials (Volumes 313-314)
• Pages: 1210-1213
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.313-314.1210
• Online since: March 2013
• Authors: Ji Wang, Jian Hua Zheng
• Keywords: ANSYS, Bolt, Preload, Stop Valve, Stress Analysis, Valve Stem

References

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