低循环倍率锅炉再循环系统构成一个闭合回路,在设计阶段就必须讨论其稳定性。瑞士苏尔寿公司的F.Laubli和K.Evers曾引入特征数V的方法,借助模拟机能定性地判别闭合回路的稳定性,但这个特征数是个没有物理意义的经验数据,且看不出与结构数据和热力数据的直接关系。本文给出了结构数据,热力数据和表征稳定性的参数的解析表达式,首先能用很简 Low-cycle rate boiler recycle system constitutes a closed loop, the stability of which must be discussed during the design phase. F. Laubli and K. Evers of the Swiss company Sulzer introduced the characteristic number V method to qualitatively determine the stability of the closed loop by means of simulations. However, this characteristic number is empirical data without physical significance and can not be seen The direct relationship between structural data and thermal data. In this paper, the analytical expressions of structural data, thermodynamic data and characterization of stability parameters are given. First,