摘要
文章介绍了超超临界1050MW机组中压缸进汽室超温情况,以及发电厂利用机组A级检修机会,对中压缸解体检修,发现内缸、隔板套、隔板多处变形,通流部件有碰磨痕迹,随后将第1级隔板返厂增加切向旋流冷却孔,对隔板套、隔板等进行加工,对通流间隙进行调整。机组检修结束启动后,中压缸超温问题顺利解决,中压缸效率也得到恢复。
This article introduces the situation of over temperature in the inlet chamber of the intermediate pressure cylinder of the ultra supercritical 1050 MW unit,and provides a detailed introduction to the power plant’s use of the A-level maintenance opportunity to disassemble and inspect the intermediate pressure cylinder.It was found that the inner cylinder,baffle sleeve,and baffle were deformed in multiple places,and there were signs of collision and wear on the flow components.Subsequently,the first stage baffle was returned to the factory to add tangential swirl cooling holes,and the baffle sleeve and baffle were processed,and the flow clearance was adjusted.After the maintenance of the unit was completed and started,the problem of overheating of the intermediate pressure cylinder was effectively solved,and the efficiency of the intermediate pressure cylinder was also restored.
出处
《电力系统装备》
2024年第5期102-104,共3页
Electric Power System Equipment
关键词
中压缸
超温
变形
通流间隙
调整
medium pressure cylinder
over temperature
deformation
flow clearance
adjustment
