Optimization on start-up process of high-pressure rotor for large power steam turbine | Zendy

Qiuwan Du | Zendy; Zhaoli Zheng | Zendy; Yonghui Xie | Zendy

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Optimization on start-up process of high-pressure rotor for large power steam turbine

Author(s) -

Qiuwan Du,

Zhaoli Zheng,

Yonghui Xie

Publication year - 2016

Publication title -

thermal science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.339

H-Index - 43

eISSN - 2334-7163

pISSN - 0354-9836

DOI - 10.2298/tsci160201204d

Subject(s) - rotor (electric) , coupling (piping) , process (computing) , steam turbine , transient (computer programming) , finite element method , turbine , stress (linguistics) , power (physics) , thermal , computer science , thermal power station , mechanical engineering , materials science , structural engineering , engineering , physics , thermodynamics , electrical engineering , linguistics , philosophy , operating system

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

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