ZHU Hongbing, LIU Xiaohong, CAO Jianfeng, et al. Application of additionally supplying steam technology in large scale steam turbines[J]. Thermal power generation, 2014, 43(7): 128-130.
ZHU Hongbing, LIU Xiaohong, CAO Jianfeng, et al. Application of additionally supplying steam technology in large scale steam turbines[J]. Thermal power generation, 2014, 43(7): 128-130.DOI:
过载补汽技术在大型汽轮机中的应用
摘要
介绍了过载补汽阀的结构及技术特点
以某600MW机组为例
定量分析了过载补汽结构对机组性能的影响。结果表明:采用补汽阀后
机组电功率增加38.949MW
提高约6.40%;但机组热耗率增加约59.2kJ/(kW·h)
经济性降低约0.78%;汽轮机高压缸效率下降约1.96%。因此
在夏季或其他用电高峰期
采用补汽阀牺牲微量经济性
以保证机组出力是安全可行的。
Abstract
The additionally supplying steam at overload in large scale steam turbines was presented.Taking a 600MW unit as the example
the effect of additionally supplying steam structure on the unit performance was quantitatively analyzed.The results show that:after the supplying steam valve was applied
the unit's power efficiency increased by 38.949 MW
about 6.40%growth;but the unit heat consumption rate increased by 59.2kJ/(kW·h)
the economic efficiency reduced by 0.78%;the high pressure cylinder efficiency dropped by 1.96%.Therefore
in summer or other days with high electricity load
using the additionally supplying steam technology is safe and feasible
though it will cause a little decrease in unit economy.