过载补汽技术在大型汽轮机中的应用  

Application of additionally supplying steam technology in large scale steam turbines

作　　者：朱红兵 刘晓宏[2] 曹剑锋[2] 赵立纾[2] 

机构地区：[1]新乡中益发电有限公司,河南新乡453432 [2]西安热工研究院有限公司,陕西西安710032

出　　处：《热力发电》2014年第7期128-130,共3页Thermal Power Generation

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。The additionally supplying steam at overload in large scale steam turbines was presented.Taking a 600 MW 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 59.2 kJ/（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.

关 键 词：600 MW机组 过载补汽阀 电功率 热耗率 煤耗率 

分 类 号：TK263[动力工程及工程热物理—动力机械及工程]