汽轮机组运行过程中差胀的变化及对振动的影响  

Variation of Differential Expansion and Its Influence on Vibration During Operation of Turbine Generator

作　　者：张双双 傅行军[1] 

机构地区：[1]东南大学火电机组振动国家工程研究中心,江苏南京210096

出　　处：《工业控制计算机》2018年第10期15-16,19,共3页Industrial Control Computer

摘　　要：伴随着大容量、高参数汽轮发电机组的陆续投产,频繁地调峰使得转子和气缸在机组启停时承受很大的热应力,由于汽轮机转子和气缸质面比的不同,使得在启停过程中产生差胀,以华能某厂新投产的225MW蒸汽燃气联合循环蒸汽轮机为例,分析了汽轮发电机组冷、热态启动及带负荷过程中的差胀的变化规律及其对振动的影响。发现冲转过程中适当提高主蒸汽温度,保证足够的暖机时间以及控制升负荷的速率对于减小差胀变化和汽轮机稳定地运行具有重要的工程意义。The Steam turbine of a new production of 225 MW steam and gas combined cycle is taken as an example to analyse the variation of differential expansion and its influence on vibration caused by contact rubbing fault of turbine generator in the process of operation.It provides a reference for the control of differential expansion and its influence on vibration in the process of operation of turbine generator.

关 键 词：差胀 汽轮机振动 动静碰磨 

分 类 号：TM311[电气工程—电机]