300MW级抽凝背式供热机组技术研究

Technology Research on the 300 MW NCB heating turbine

分析了我国热电联产中大、中型机组与常用背压机组的优、缺点及技术关键点,通过对比抽凝背机组与抽凝机组的技术经济性,得出在热负荷充足的区域,抽凝背机组比常规抽凝机组能够进一步减少冷端损失,提高机组热效率的结论。

The advantages, disadvantages and technical key points of the large and medium sized units and the commonly used back pressure steam turbines in the combined heat andpower generation in China are analyzed. By comparing the technical and economical performance of the extraction condensing turbine and the NCB turbine. The author conclude that the NCB turbine can further reduce the cold end loss than the extraction condensing turbine in the area with sufficient heat load.