THERMAL SCIENCE

International Scientific Journal

Authors of this Paper

External Links

Qiu-Wan Du

,

Zhao-Li Zheng

,

Yong-Hui Xie

OPTIMIZATION ON START-UP PROCESS OF HIGH-PRESSURE ROTOR FOR LARGE POWER STEAM TURBINE

ABSTRACT
This paper combines thermal-structure coupling technique and pattern search optimization algorithm to establish an optimization system for the start-up process of a turbine unit. Firstly, a finite element model for thermal-structure coupling calculation is established to accurately analyze the transient temperature field and thermal stress field, which can obtain the thermal stress distribution during start-up process. Afterwards, a program of optimization on rotor start-up process is exploited to improve the time allocation in each operating stage of start-up process, which minimizes the maximum equivalent stress of rotor. The maximum equivalent stress has reduced 25.7% after the optimization, which reveals obvious effect.
KEYWORDS
finite element method, steam turbine start-up, rotor, thermal stress, optimization design, pattern research method
PAPER SUBMITTED: 2016-02-01
PAPER REVISED: 2016-03-15
PAPER ACCEPTED: 2016-03-26
PUBLISHED ONLINE: 2016-08-14
DOI REFERENCE: https://doi.org/10.2298/TSCI160201204D
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2016, VOLUME 20, ISSUE Supplement 3, PAGES [S815 - S822]
REFERENCES
  1. Yang, Y. P., et al., Situation and Prospect of Energy Consumption for China's Thermal Power Generation, Proceedings of the CSEE, 33(2013), 23, pp. 1-11
  2. Xie, J., et al., Evaluation and Incentive Mechanism of Peaking Capability of Hydroelectric/thermoelectric Generators, Journal of Zhejiang University, 43(2009), 11, pp. 2079-2084
  3. Schmerling, J. M., et al., Investigation of the Tennessee Valley Authority Gallatin Unit No.2 Turbine Rotor Burst, Proceedings of the American Power Conference, Chicago, 1976
  4. Bhaumik, S. K., et al., Failure of Turbine Rotor Blisk of an Aircraft Engine, Engineering Failure Analysis, 9(2002), 3, pp. 287-301
  5. Wang, K., Research on Service Life of Large Turbine Rotors, Huazhong University of Science and Technology, Wuhan, 2004
  6. Liu, P., Study on Thermal Stress Value of Steam Turbine Rotor, Computer Aided Engineering, 15(2006), pp. 344-348
  7. Zhang, F. F., Numerical Computation of Fatigue Life in Large Steam Turbine Rotor, North China Electric Power University, Beijing, 2007
  8. Bai, Y., Numerical Analysis and Investigation of Low Cycle Fatigue Life Damage for Steam Turbine's High Pressure Rotor, Changsha University of Science & Technology, Changsha, 2009
  9. Barella, S., et al., Failure analysis of a steam turbine rotor, Engineering Failure Analysis, 18(2011), 6, pp. 1511-1519
  10. Zheng, L. P., Study on Thermal Stress Calculation and Start-up Optimization for Steam Turbine Rotor of Combined Cycle Based on APDL, Zhejiang University, Hangzhou, 2011
  11. Ding, Y. J., Optimization of Start-up Process in Steam Turbine, Zhejiang University, Hangzhou, 2013
  12. Li, X. P., et al., Fatigue Damage Research on Rod-fastening Rotor of Gas Turbine Considering Start-up Stage, Applied Mechanics and Materials, 387(2013), pp. 221-226
  13. Nowak, G., et al., Shape and Operation Optimization of a Supercritical Steam Turbine Rotor, Energy Conversion and Management, 74(2013), pp. 417-425
PDF VERSION [DOWNLOAD]
Optimization on start-up process of high-pressure rotor for large power steam turbine

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence