热力透平2026，Vol.55Issue(3)：249-253,5.DOI:10.13707/j.cnki.31-1922/th.2026.03.015
厂房温度对低压转子绝对膨胀值的影响分析
Effect Analysis on Turbine Hall Temperature on Absolute Expansion Value of Turbine Low-Pressure Rotor
衣海伟 1赵普 2杨炜炜2
作者信息
- 1. 阳江核电有限公司,阳江 529941
- 2. 上海电气电站设备有限公司汽轮机厂,上海 200240
- 折叠
摘要
Abstract
To address the issue of excessive absolute expansion of the low-pressure(LP)rotor in a nuclear power plant during winter conditions,which impacts the safe operation of the unit,the variation trends of the turbine hall temperature,foundation temperature,and LP rotor absolute expansion value are analyzed.The results indicate that the turbine hall temperature has a direct impact on both the concrete foundation temperature and the absolute expansion of the LP rotor.The thermal expansion characteristics of the LP rotor and the coupling mechanism among the turbine hall ambient temperature,concrete foundation temperature,and LP rotor absolute expansion value under different temperature conditions are investigated.Furthermore,thermal insulation measures for the turbine hall,such as regulating the operation of ventilation equipment,are implemented to suppress the growth rate of the LP rotor absolute expansion.This effectively prevents unit power derating or shutdown caused by alarm triggers for the LP rotor excessive absolute expansion.Through data analysis,the relationship between the foundation temperature and the absolute expansion value of the LP rotor is determined.The research findings can provide a valuable reference for addressing similar issues in the future.关键词
汽轮机/低压转子绝对膨胀/冬季工况/基础温度Key words
steam turbine/absolute expansion of low-pressure rotor/winter condition/foundation temperature分类
信息技术与安全科学引用本文复制引用
衣海伟,赵普,杨炜炜..厂房温度对低压转子绝对膨胀值的影响分析[J].热力透平,2026,55(3):249-253,5.
