Monitoring of the Stress State in the Boiler Drum Using Finite Element Method

Abstract:

The calculations of stresses acting on the wall of boiler drum during the start-up process are presented in this paper. On the basis of the temperature measurements, which were carried out to determine the temperature distribution along the circumference of the outer wall of boiler drum, the temperature at the inner wall surface is determined using the inverse methods. The computations are carried out for the whole operation cycle of the power plant. Therefore, the pressure and temperatures are updated at consecutive time steps. These parameters allow determining the maximum values of circumferential, axial and Von Misses stresses during the operation cycle of steam boiler.

• Periodical: Advanced Materials Research (Volumes 875-877)
• Pages: 1176-1182
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.875-877.1176
• Online since: February 2014
• Authors: Bohdan Węglowski*, Paweł Ocłoń, Andrzej Majcher
• Keywords: Boiled Start-up, Finite Element Method (FEM), Stress

References

[1] J. Taler: Theory and practice of identification of heat transfer processes in Polish, Ossolineum, Wrocław(1995).

[2] P. Rop: Drum Plus: a drum type HRSG with Benson benefits. Modern Power Systems Vol. 30 (2010), pp.35-40.

[3] TRD: Technische Regeln für Dampfkessel. Carl Heymans Verlag, Köln und Beuth-Verlag, Berlin, (2002).

DOI: 10.1002/cite.330500725

[4] B. Węglowski: Analysis of boilers operation under transient conditions. In: Taler J (ed) Thermal and flow processes in large steam boilers. Modeling and monitoring. PWN, Warsaw, pp.385-404 (2011).

[5] J. Taler: Analytical solution of the over-determined inverse heat conduction problem with an application to monitoring thermal stresses. Heat and Mass Transfer, Vol. 33: (1997), pp.209-218.

DOI: 10.1007/s002310050180

[6] J. Taler: A semi-numerical method for solving inverse heat conduction problems. Heat and Mass Transfer, Vol 31, (1996), pp.105-111.

DOI: 10.1007/bf02333307

[7] J. Taler: A new space marching method for solving inverse heat conduction problems. Forschung im Ingenieurwesen, Vol. 64, (1999), pp.296-306.

DOI: 10.1007/pl00010844

[8] P. Duda, J. Taler: Experimental verification of space marching methods for solving inverse heat conduction problems. Heat and Mass Transfer, Vol. 36, (2000), pp.325-331.

DOI: 10.1007/s002310000082

[9] J. Taler: A numerical method for the solution of the transient nonlinear inverse heat conduction, XVI Polish Conference on Thermodynamics in Kołobrzeg – Koszalin, Poland Vol. II, (1996), pp: 413-424 (in Polish).

[10] J. Taler, B. Węglowski, T. Sobota, M. Jaremkiewicz, D. Taler: Inverse space marching method for determining temperature and stress distributions in pressure components. In: Marco Aurélio dos Santos Bernardes (ed) Developments in heat transfer. Intech, Rijeka, Croatia, (2011).

DOI: 10.5772/21614

[11] J. Taler, B. Węglowski, W. Zima, S. Grądziel, M. Zborowski Analysis of thermal stresses in boiler drum during start-up. Transactions of the ASME, Journal of Pressure Vessel Technology Vol. 121, pp.84-93.

DOI: 10.1115/1.2883672

[12] B. Węglowski, P. Ocłoń: Analysis of operating conditions for pressure components of steam boilers. Rynek Energii, Vol. 103 (6), pp.99-106.

[13] S. Łopata, P. Ocłoń: Analysis for high performance heat exchanger with the finned elliptical tube. Rynek Energii, Vol. 103 (6), pp.99-106.