用Baumman公式估算汽轮机排汽压力对机组经济性的影响  

Estimate Exhaust Pressure of Steam Turbine on the Economic Impact with Baumman Formula

作　　者：徐曙[1] 

机构地区：[1]国网湖南省电力公司电力科学研究院,长沙410007

出　　处：《汽轮机技术》2016年第1期72-74,32,共4页Turbine Technology

摘　　要：通过分析在不同排汽压力下汽轮机各参数的变化,结合Baumman公式估算低压缸排汽焓,得到汽轮机排汽压力对机组电功率和热耗率的修正曲线以及低压缸内效率曲线,与制造厂提供的资料对比基本一致。此方法同样可以按现场精确的热力性能试验数据进行计算,可用来估算制造厂未提供工况的修正曲线,并校核制造厂家提供的曲线。By analyzing changes of the parameters of the turbine at different exhaust pressure, estimated exhaust enthalpy ot the low-pressure cylinder combined with Baumman＇ s formula, get correction curves of turbine exhaust pressure on the unit power and heat rate, and the low-pressure cylinder efficiency curve. Compared with the information provided by manufacturer is consistent. This method can also be calculated from precise site thermal performance test data l and can be used to estimate the correction curve which the manufacturer does not provided, and check the curve provided by manufacturer.

关 键 词：汽轮机 排汽压力 修正曲线 冷端 低压缸效率 

分 类 号：TK113[动力工程及工程热物理—热能工程]