热力透平2026，Vol.55Issue(2)：97-101,5.DOI:10.13707/j.cnki.31-1922/th.2026.02.003
300 MW空气透平低压缸鼓风发热实例研究
A Case Study on Windage Effect of a 300 MW Air Turbine Low Pressure Cylinder
摘要
Abstract
Windage can cause a rapid and significant increase of temperature in the flow path of turbine within a short period,thereby affecting the safe and stable operation of the unit.By analyzing the operation parameters of a 300 MW air turbine during long-time idling at 3 000 r/min and under initial load condition when windage occurred in the low-pressure cylinder,the correlations among parameters were investigated,thereby,the main influencing factors of windage in the low-pressure cylinder were identified.The study yields the following conclusions:during the speed-up phase of the air turbine,windage has already commenced in the last two stages of the low-pressure cylinder;at the shut-down transient after idling at 3 000 r/min and under load condition,the low-pressure exhaust temperature and the inlet temperatures of blades in the last two stages will be much higher.The highest operating temperature appears at the shut-down transient after idling at 3 000 r/min,and under all operating conditions,the inlet temperatures of the last-stage exhibit larger variation and higher absolute values compared to the inlet temperatures of the penultimate stage and the exhaust temperatures of the last-stage.Therefore,monitoring the inlet temperatures of the last-stage is essential in actual operation.The research findings can provide support for subsequent air turbine design and startup operation.关键词
空气透平/低压缸排气/温度测量/鼓风发热Key words
air turbine/low pressure exhaust/temperature measurement/windage分类
信息技术与安全科学引用本文复制引用
孙録,吴仕芳,刘欢..300 MW空气透平低压缸鼓风发热实例研究[J].热力透平,2026,55(2):97-101,5.基金项目
2024年度上海市促进产业高质量发展专项(ZB-ZBST-01-24-0602) （ZB-ZBST-01-24-0602）
