630 MW超临界汽轮机高压缸进汽喷嘴组优化改造  

Optimazation and Reconstruction of 630 MW Supercriti-cal Steam Turbine HP Cylinder Nozzle

作　　者：陶有宏[1] 付文龙[1] 戈建新 项林[1] 郝庆丰 TAO Youhong;FU Wenlong;GE Jianxin;XIANG Lin;HAO Qingfeng(Tianji Power Plant of Huaihu Coal&Power Co.,Ltd.)

机构地区：[1]淮沪煤电有限公司田集发电厂

出　　处：《上海节能》2022年第7期930-933,共4页Shanghai Energy Saving

摘　　要：介绍了某发电厂1号机组630 MW超临界汽轮机高压缸进汽喷嘴组的优化改造,并综合考虑一次调频、低负荷调门节流损失和夏季满负荷工况等因素,降低了喷嘴通流截面积,并根据改造后的喷嘴组重新进行阀门流量特性试验,优化配汽函数,有效提高了主蒸汽压力,获得了较好的节能效果,为国内大型汽轮机组喷嘴改造提供了理论依据和实践经验。This paper analyzes and introduces the high-pressure cylinder inlet nozzle group redesign-ing and reforming of No.1630 MW supercritical steam turbine unit in Tianji Power Plant.Taking into account factors such as primary frequency regulation,low-load valve throttling loss,and summer full-load conditions,the nozzle through-flow cross-sectional area is reduced,and the valve flow char-acteristic test is carried out again according to the modified nozzle group to optimize the steam distribu-tion function.The main steam pressure is effectively increased,and good energy-saving effect is ob-tained,which provides theoretical basis and practical experience for the nozzle transformation of large-scale steam turbine units in China.

关 键 词：喷嘴改造 节能 效率 主汽压力 

分 类 号：TM621[电气工程—电力系统及自动化]