600 MW超临界汽轮机轴封汽温对转子寿命影响的研究  

Study of the influence of steam temperature of shaft seal on the life of 600 MW supercritical steam turbine rotor

作　　者：张高辉 

机构地区：[1]华电国际奉节发电厂,重庆404600

出　　处：《华电技术》2017年第3期33-35,共3页HUADIAN TECHNOLOGY

摘　　要：大型火电机组参与电网调峰过程中,其汽轮机轴封系统参数变化致使轴封处转子经常承受交变应力作用,导致转子寿命损耗。以华电某电厂试运行中出现的问题为依据,说明火电厂现有系统在变负荷运行时,轴封汽温的变化对转子寿命的影响,并在运行和技术管理方面提出针对性的改进措施,对该类型机组开展寿命管理具有一定的借鉴意义。In the process of large thermal power unit to participate in grid peak regulating,variation in turbine shaft sealing system parameters causes the rotor at shaft seal to bear alternating stress effect,and finally causes the life loss of rotor.Taking the appearing problems in the commissioning of a certain Huadian power plant as a basis,this paper introduces the influence of steam temperature variation of shaft seal on the life of rotor when current power plant system is in variable load operation.After that,it proposed some corresponding improvement measures in aspects of operation and technical management,which has a certain reference significance for the life management of similar units.

关 键 词：调峰 转子 轴封汽温 寿命损耗 

分 类 号：TK262[动力工程及工程热物理—动力机械及工程]