补汽流量和结构对机组影响的数值研究  

Numerical Investigation for Effect of Supplementary Steam Quantity and Structure on Steam Turbine

作　　者：白昆仑 平艳 钟主海[1] 江生科[1] 陶志坚 BAI Kunlun;PING Yan;ZHONG Zhuhai;JIANG Shengke;TAO Zhijian(Dongfang Turbine Co.,Ltd.,618000,Deyang,Sichuan,China)

机构地区：[1]东方电气集团东方汽轮机有限公司,四川德阳618000

出　　处：《东方电气评论》2022年第4期22-25,29,共5页Dongfang Electric Review

摘　　要：本文利用数值计算的方法,以某百万等级机组为研究对象,分析对比了A、B两种不同的补汽结构下,补汽流量大小对前后级性能和转子运行稳定性的影响。分析结果表明:随着补汽流量的增大,补汽前一级的效率变化不大,补汽后一级的效率明显下降,补汽对转子运行稳定性的影响也越来越大。从级效率和转子运行稳定性的角度来看,补汽结构A优于补汽结构B。Based on a 1 000 MW steam turbine, the effect of supplementary steam quantity on stage efficiency and rotor operational stability is investigated by using numerical simulation. Two different kinds of supplementary steam structures are compared. The results show that, with the increase of supplementary steam quantity, the upstream stage efficiency almost unchanged, while the downstream stage efficiency reduces significantly, the effect of supplementary steam on the rotor operational stability becomes more serious. From the stage efficiency and rotor operational stability view, the structure A is better than the structure B.

关 键 词：补汽流量 补汽结构 效率 数值计算 

分 类 号：TM621[电气工程—电力系统及自动化]