Analysis to speed up of the start-up of steam boiler OP-380

• Autorzy: Taler J. , Węglowski B. , Dzierwa P. , Czupryński P. , Madejski P. , Nabagło D. , Żyrkowski C.
• Języki publikacji: EN

Abstrakty

EN

During operation of the OP-380 boiler under transient conditions, for example during start-up and shutdown of the power unit, on the circumference of horizontal pressure elements like a drum, inlet and outlet headers, considerable temperature differences are observed. The duration of each start-up and shutdown is relatively long because is limited by thermal stresses caused by temperature changes. The paper presents the method of the maximum stresses arising during operation in transient states determination, based on the measurement of temperature on the outer surface of the thick-walled pressured element. The presented measuring system, including the described method has been implemented in the OP-380 boiler at EDF Krakow. This system will act as a thermal constraints system, whose main task is to protect the equipment against exceeding the maximum allowable thermal stress. This method will also allow assessment of the viability of thick-walled components based on the values of the stresses that occur during long-term operation of the boiler.

Słowa kluczowe

EN

boiler; thermal stresses; thick-walled elements

PL

bojler; naprężenia termiczne; elementy grubościenne

• Wydawca: Institute of Heat Engineering, Warsaw University of Technology
• Czasopismo: Journal of Power Technologies
• Rocznik: 2014
• Tom: Vol. 94, nr 2
• Strony: 114--120
• Opis fizyczny: Bibliogr. 9 poz., rys., wykr.

Twórcy

autor

Taler J.

• Institute of Thermal Power Engineering, Cracow University of Technology, 24 Warszawska Street, 31-155 Cracow, Poland

autor

Węglowski B.

• Institute of Thermal Power Engineering, Cracow University of Technology, 24 Warszawska Street, 31-155 Cracow, Poland

autor

Dzierwa P.

• Institute of Thermal Power Engineering, Cracow University of Technology, 24 Warszawska Street, 31-155 Cracow, Poland

autor

Czupryński P.

• EDF Polska S.A., Research and Development, 1 Cieplownicza Street, 31-587 Cracow, Poland

autor

Madejski P.

• EDF Polska S.A., Research and Development, 1 Cieplownicza Street, 31-587 Cracow, Poland

autor

Nabagło D.

• EDF Polska S.A., Research and Development, 1 Cieplownicza Street, 31-587 Cracow, Poland

autor

Żyrkowski C.

• EDF Polska S.A., Research and Development, 1 Cieplownicza Street, 31-587 Cracow, Poland

Bibliografia

• [1] J. Taler, P. Dzierwa, D. Taler, Determining optimum temperature changes during heating of pressure vessels with holes, in: PVP 2013-98025. Proceedings of the ASME 2013 Pressure Vessels & Piping Division Conference PVP2013, Paris, 2013, pp. 14–18.
• [2] J. Taler, B. Węglowski, W. Zima, S. Grądziel, M. Zborowski, Analysis of thermal stresses in a boiler drum during start-up., Transactions of the ASME, Journal of Pressure Vessel Technology 121 (1999) 84–93.
• [3] T. S. Kim, D. K. Lee, S. T. Ro, Analysis of thermal stress evolution in the steam drum during start-up of a heat recovery steam generator, Applied Thermal Engineering 20 (2000) 977–992.
• [4] K. Krüger, R. Franke, M. Rode, Optimization of boiler start-up using a nonlinear boiler model and hard constraints, Energy 29 (2004) 2239–2251.
• [5] P. Dzierwa, Encyclopedia of Thermal Stresses, Springer, Berlin, Germany, 2013, Ch. Optimum heating of pressure components of complex shape.
• [6] J. Taler, P. Dzierwa, D. Taler, Optimum heating of pressure components of large steam boilers, Forschung im Ingenieurwesen (Engineering Research) 73 (3) (2009) 183–192.
• [7] J. Taler, P. Dzierwa, A new method for optimum heating of steam boiler pressure components, International Journal of Energy Research 35 (2011) 897–908.
• [8] H. Beuth, TRD 301, Zylinderschalen unter innerem Überdruck. Technische Regeln für Dampfkessel (TRD),143–185, Köln-Berlin, Germany (2001).
• [9] Water-tube boilers and auxiliary installations – part 3: Design and calculation for pressure parts (2012).