摘要
通过对国产600 MW发电机异常振动过程的现场分析,发现转子裂纹发展过程中的转子振动变化特征,尤其是在二倍频情况下振动相位变化则是反映非对称转子结构状态,判断转子裂纹状况的一个重要依据。
Characteristics of the vibrational behavior of a rotor, changing with a developing crack, have been revealed by on-site observation of the process of abnormal vibrational behavior of a domestic manufactured 600 MW generator. It is specially noteworthy that the phase-changes of vibration near twice the net frequency reflect the unsymmetrical constitution of the cracked rotor, which may serve as an important indication of the state of cracking.
出处
《发电设备》
2005年第6期395-397,407,共4页
Power Equipment
关键词
发电机
裂纹
转子
振动
二倍频相位变化
generator
cracking
rotor
vibration
phase changes of vibration near twice the net frequency
