660MW汽轮发电机组热态启动振动诊断及处理  

Vibration Diagnosis and Disposal of a 660MW Turbo-Generator Unit During Hot Starting

作　　者：李晚涛 傅行军[1] 邢海波[1] 邓敏强[1] 蔡明 

机构地区：[1]东南大学火电机组振动国家工程研究中心,南京210096 [2]皖能合肥发电有限公司,合肥230041

出　　处：《发电设备》2017年第4期272-275,共4页Power Equipment

摘　　要：针对某电厂660 MW机组热态启动过程中1瓦振动过大问题,分析机组升速、降速和定速过程中振动变化特征,确定故障原因是热态启动条件下胀差过小导致碰摩。通过调整运行参数,缩短升速时间,机组成功升至额定转速,且振动状态优良,对治理同类故障具有参考价值。To solve the problem of excessive shaft vibration near the first bearing of a 660 MW unit during hot starting process, the vibration characteristics were analyzed when the turbine was accelerating, decelerating or at a constant speed, after which the fault was found to be caused by rub-impacts due to too small expansion difference in the case of hot starting. By adjusting the operation parameters and shortening the speed-up time, the unit succeeded in reaching rated speed and the vibration was kept within reasonable range. This may serve as a reference for dealing with such kind of faults.

关 键 词：汽轮机 热态启动 胀差 碰摩 振动 

分 类 号：TK267[动力工程及工程热物理—动力机械及工程]