汽轮机主蒸汽流量在线计算方法及应用  

ON-LINE CALCULATION METHOD FOR THE MAIN STEAM FLOW RATE OF STEAM TURBINE AND ITS APPLICATION

作　　者：汪军[1] 周建新[1] 司风琪[1] 徐治皋[1] 

机构地区：[1]东南大学能源与环境学院,江苏南京210096

出　　处：《热力发电》2010年第10期42-45,共4页Thermal Power Generation

摘　　要：汽轮机主蒸汽流量的在线计算是火电机组性能监测中的一项难题。分析了影响主蒸汽流量在线计算的主要因素,比较了现有计算方法的精度,在弗留格尔公式的基础上,结合运行实践经验,提出了一种新的主蒸汽流量计算公式及其修正方法,并以某台大型汽轮机为应用实例进行计算。结果表明,新的主蒸汽流量计算公式及其修正方法达到了较高精度,具有一定的应用价值。On-line calculation of the main steam flow rate for a steam turbine is one difficult problem in monitoring the performance of thermal power units.The main affecting factors in on-line calculation of the main steam flow rate have been analysed,and the accuracy of existing calculation methods being compared.On the basis of Flügel formula,and combined with practical experiences in operation,a new calculation formula and its corrective method have been put forward,and taking a large-capacity steam turbine as an example for application,the calculation being carried out.Results show that the new calculation formula and its corrective method have higher accuracy,boasting a certain value for application.

关 键 词：汽轮机 性能监测 主蒸汽 流量 在线计算方法 

分 类 号：TM313[电气工程—电机] TK262[动力工程及工程热物理—动力机械及工程]