Thermal Stress Analysis of Rotor of Ultra Supercritical Steam Turbine

Xiao Tong Zhao; Qing He; Dong Mei Du

doi:10.4028/www.scientific.net/AMM.494-495.529

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 494-495Thermal Stress Analysis of Rotor of Ultra...

Thermal Stress Analysis of Rotor of Ultra Supercritical Steam Turbine

Abstract:

The rotor of ultra supercritical steam turbine runs in bad condition with high parameters of steam. The large heat stress of rotor may appear when the operating conditions of turbine unit is changed, for example, adjusting load to meet the requirements of peak and valley of grid, especially, improper operation causing serious damage to rotor. According to theory of thermal stress analysis, first, the steam parameters and their heat transfer coefficients of all cascades of 1000MW ultra supercritical steam turbine is calculated. Then the temperature field and stress field of the high-pressure rotor in the process of cold startup calculated by the finite element software are analyzed and discussed. The results are important to the startup and changing conditions of 1000MW ultra supercritical steam turbine unit.

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Periodical:

Applied Mechanics and Materials (Volumes 494-495)

Pages:

529-532

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.494-495.529

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Online since:

February 2014

Authors:

Xiao Tong Zhao*, Qing He, Dong Mei Du

Keywords:

Finite Element Analysis (FEA), Rotor, Steam Turbine, Thermal Stress, Ultra Supercritical

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* - Corresponding Author

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