1000MW超超临界机组汽轮机中压缸变形分析及处理  

Analysis and Treatment of IP Cylinder Deformation in 1 000 MW Ultra-Supercritical Steam Turbine

作　　者：吾明良 余化文[1] 尹金亮 韩兵[1] 

机构地区：[1]华能玉环电厂,浙江省台州市317604 [2]中电投集团平顶山发电有限公司,河南省平顶山市467031

出　　处：《电力建设》2013年第12期86-91,共6页Electric Power Construction

摘　　要：华能玉环电厂1号机组是我国首台1 000 MW超超临界机组。介绍了该机组汽轮机中压缸首次开缸检修情况;对开缸过程中发现的中压缸内外汽缸变形状况进行了分析;提出了行之有效的处理方案,采用反复交替冷、热紧汽缸法兰中分面螺栓的方法,解决了中压内缸的变形问题;通过反复测量、试验,在确保动静部件不碰磨的情况下装复中压内外缸。汽缸检修后,机组盘车、启动、带负荷均一次成功,表明处理方案正确可靠。1 unit in Huaneng Yuhuan Power Plant is the first 1 000 MW ultra-supercritical unit in China. This paper introduced the first maintenance of IP cylinder in this unit and analyzed the deformation of inner and outer cylinder. The effective treatment scheme for IP inner cylinder deformation was proposed ： the bolt in the horizontal joint of cylinder being repeatedly, alternately heated and cooled; the IP cylinder being reassembled without the friction and collision between dynamic and static component, after repeated measuring and testing. After the cylinder maintenance, it succeeds in one time to turning and starting turbine, and makes a success in loading operation, which shows that the treatment scheme is accurate and reliable.

关 键 词：1 000 MW超超临界机组 中压缸 缸壁温差 缸体变形 

分 类 号：TM621[电气工程—电力系统及自动化]