The optimization of regenerative system is an important measure to improve the thermal economy of thermal power units.According to the characteristics of 1 000 MW ultra-supercritical steam turbine regenerative system,combined with the research of regenerative system at home and abroad,the scheme of dual-machine regen-erative system with constant speed generator is put forward,which uses a variable speed extraction back-pressure small steam turbine to drive the main feedwater pump.By conducting a comprehensive economic and technical comparison with the current mainstream conventional regenerative system,this paper explores the feasibility of a dual machine 12 stage regenerative system with a constant speed generator.
关键词
双机回热系统/抽背式小汽轮机/高压加热器/外置蒸汽冷却器
Key words
Dual-machine regenerative system/Extraction back-pressure small steam turbine/High-pressure heater/External steam cooler
维普
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