Mechanical Stress Analysis of a 600MW Supercritical Boiler Superheater Outlet Header

Dongyi Li, Zhongguang Fu, Qiang Zhang, Ting He

School of Energy,Power and Mechanical Engineering;North China Electric Power University;Beijing,China.

DOI: 10.4236/eng.2013.51B012                

Abstract

The mechanical stress distribution and the stress concentrations of the superheater outlet header of a 600MW supercritical boiler were analyzed by the finite element method. The results showed that the stress concentrated at the inside conjunction area between the pipe and the header cylinder , and the value of the maximum mechanical stress concentration factor is 2.51.

Keywords

Superheater Outlet header; Finite Element Method; Stress Concentration

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	D. Q. Zhang, S. J. Yang, G. Z. Liu And G. C. Zhang, "Fatigue Life Assessment Of Plant Drum In Service," Shandong Electric Power, Vol. 2, No. 6, 1997, Pp. 19-21+25.
[2]	Y. G. Pei, Y. F. Shen, T. L. Yang, Z. D. Cao, J. Wu, S. X. Zhuang And H. D. Wang, "Management System Of Boiler Drum S Fatigue Life," Journal Of Xi An Jiaotong University, Vol. 5, No. 16, 1999, Pp. 64-67.
[3]	L. B. He, "Service Life Analysis Of The High Temperature Superheater Outlet Header In A 600mw Supercritical Boiler," Master, Thesis, North China Electric Power University, Beijing, 2011.
[4]	Q. Z. Yin, J. S. Xiao, A. L. Jiang, Y. P. Chen And Z. L. Zhao, "Finite Element Analysis Of Three Dimensional Transient Stress In 300mw Boiler Drum," Journal Of Wuhan University Of Technology(Transportation Science & Engineering), Vol. 1, No. 17, 2007, Pp.60-62+69.
[5]	Vallourec & Mannesmann Tubes. "T92/P92 Steel Handbook," In: (Ultra-) Supercritical Boiler Steel And Welding Technical Symposium, 2005, Pp. 285-304.
[6]	Z. W. Shi, "Numerical Simulation Of Temperature Field For T92/12cr1mov Dissimilar Steel Welding," Mechanical Research And Application, Vol. 4, No. 41, 2010, Pp. 99-101+104.
[7]	Z. J. Wang, "Boiler Structure Finite Element Analysis," Chemical Industry Press, Beijing, 2005.
[8]	T. Liu, "Life Estimation And On-Line Monitoring For Pressurte-Bearing Part Of Utility Bolier," Ph.D. Thesis, North China Electric Power University, Beijing, China 2007.
[9]	D. B. Wang, X. L. Wei, S. Xiang, C. X. Guo, J. X. Wu, "Stress Analysis And Design For Tangential Opening Tubing Connection On Pressure Vessels," China Petroleum Machinery, Vol. 4, No. 2, 2006, Pp. 5-7+85.