东方660 MW超超临界二次再热汽轮机高中压外缸强度分析

摘要

The calculation of the strength,stiffness and tightness are very important when HIP casing of Dongfang 660 MW ultra-su⁃percritical double-reheat steam turbine is designed.Based on the three dimensional elastic theory,the paper establishes the finite el⁃ement modle of HIP casing for Dongfang 660 MW double-reheat steam turbine to analyse the temperature field, stress and deformation simulation, provides a technical basis for safety and reliablity of casing.%汽轮机高中压外汽缸的设计、整体结构要保证有足够的强度、刚性及法兰中分面的密封性。文章采用三维弹性接触理论，建立东方660 MW二次再热汽轮机高中压外缸的有限元模型，进行温度场、热应力和机械应力及变形仿真分析，为汽缸的安全可靠性评定提供了技术依据。