应用汽轮机微增出力的通用计算方法对最末级进行变工况的计算

摘要

功率和相对内效率的计算是末级变工况计算的主要内容。介绍了汽轮机微增出力通用计算方法的原理，应用此方法，对汽轮机最末级的功率和相对内效率进行了变工况计算，并以某电厂一台310MW和一台600MW汽轮发电机组为实例，应用MATLAB软件编制计算程序，进行了实例计算，根据程序计算结果绘制了末级功率、相对内效率与背压的关系曲线。结论对于研究汽轮机末级具有重要的实用价值和理论意义。%Power and the relative internal efficiency is primary coverage of the calculation for final stage in off -design condition.This paper introduces the principle of calculation method for turbine output increasing general , using this method,calculation of the steam turbine power and relative internal efficiency for final stage in off -design condition,and a instance calculating of a 310MW and a 600MW steam turbine are simulated by MATLAB software ,according to the results of calculation drawing the relation curve of final power and back pressure ,efficiency and back pressure .The conclusion has important practical value and theoretical significance for the study of steam turbine of final stage .