汽轮机级和级组临界压比计算模型

Mathematics Model of Calculating the Steam Turbine Stage and Stage Group Critical Pressure Ratio

从级临界压比的定义出发,依据水和水蒸汽性质,在单级详细计算的基础上给出汽轮机单级临界压比的求算方法,该算法易在计算机上实现。在求出单级临界压比的基础上,可以计算出级组的临界压比,为在汽轮机变工况在线计算和故障诊断提供数据。

This paper gives a mathematics model based on the definition of the critical pressure ratio of the steam turbine stage, the characteristics of the water and the steam and the detail calculation of a single stage. This calculating model is easy to realize on computer. With the critical pressure ratio of a single stage, that of the staging can also be obtained, and thus can supply data for the online calculating and diagnosis of the steam turbine.