广东电力2017，Vol.30Issue(11)：33-37,5.DOI:10.3969/j.issn.1007-290X.2017.011.007
1000 MW机组汽轮机排汽通道节能优化改造实践
Energy-saving Optimization and Modification for Exhaust Passage of
1000 MW Steam Turbine
摘要
Abstract
Values of exhaust temperature and condenser pressure of No.2 steam turbine of Huaneng Haimeng power plant were higher than designed values.It was found the main reasons included large exhaust resistance and unreasonable distribu-tion of exhaust at the inlet of condenser cooling tube bundle caused by the extraction line in condenser throat,No.7 and No.8 low-pressure heaters,hydrophobic energy dissipation device for boiler start-up,high-pressure bypass temperature re-duction pressurizer,numerous supporting tubes and tilting arrangement of the throat,which thus restricted cooling effect of the condenser tube.By means of transforming equipment arrangement in the condenser throat,reducing exhaust resistance, installing guiding device and improving inlet flow field distribution of the condenser tube bundle,it reached the target of re-ducing heat consumption rate of the steam turbine.After the transform,power supply coal consumption has decreased about 1.644 g/kWh by an average and standard coal is saved 2959 t yearly.关键词
1000MW机组/凝汽器喉部/导流装置/排汽阻力优化/节能Key words
1000 MW unit/condenser throat/guiding device/exhaust resistance optimization/energy-saving分类
能源科技引用本文复制引用
孙伟鹏,林楚伟,张泽雄,江永..1000 MW机组汽轮机排汽通道节能优化改造实践[J].广东电力,2017,30(11):33-37,5.
