摘要
东方汽轮机厂作为国内首家对国产 2 0 0MW汽轮机进行了通流改造 ,全机内效率提高 6 % ,但同时在同一负荷下调节阀开度显著减小 ,调节级后压力明显降低。文章从定性定量两方面分析了此现象的原因及对经济性的不利影响 ,并根据不同改造情况提出了相应对策。
Dongfang Steam Turbine Works has refrofitted flow path of 200MW units first of all domestic works.Internal efficiency increases about 6%.But some issues have been found that the openning of governing valves and outlet pressure of control stage demonstrate reduction tendency in comparison with the original units at the same load level.The paper explains the cause of that phenomenon and shows its bad effects on economy based on both qualitative & quantitative analysis.The corresponding countermeasures have been proposed depending on the different retrofitted conditions.
出处
《上海汽轮机》
2001年第1期43-47,67,共6页
Shanghai Turbine
关键词
200MW汽轮机
通流改造
最佳喷嘴配汽
MW steam turbine
refrofitting flow path
optimum nozzle group control
