摘要
某电厂机组2016年通流改造后首次启动,在单阀状态下带负荷运行时,振动基本达到优良标准,改为顺序阀运行后,在高负荷时,该机组高中压转子发生了明显的汽流激振故障。通过适当降低主蒸汽压力,让2号调门处于全开状态,从而减小高中压转子受到的蒸汽激振力,机组在高负荷时振动波动值明显降低,汽流激振现象得到了有效抑制,机组可以长期安全运行。
A unit in a certain power plant first started in 2016.After the flow through transformation,the vibration basically reached the excellent standard in the single valve state with the load running.In the sequence valve state,the high and medium pressure rotor occurred obvious steam induced vibration fault at high load.By reducing the main steam pressure properly,the regulating valve was in full open state as soon as possible,thus the steam exciting force of the high and medium pressure rotor was reduced,and the vibration fluctuation value of the unit was obviously reduced at high load.The phenomenon of steam induced vibration was effectively suppressed,and the unit can safely run for a long time.
作者
曾庆丰
ZENG Qingfeng(Huaneng Hunan YueYang Power Generation Co.,Ltd.,Yueyang 414002,China)
出处
《湖南电力》
2018年第6期52-54,共3页
Hunan Electric Power
关键词
汽轮发电机组
振动
汽流激振
单阀
顺序阀
steam turbine generator unit
vibration
steam induced vibration
single valve
sequence valve
