The server is under maintenance between 08:00 to 12:00 (GMT+08:00), and please visit later.
We apologize for any inconvenience caused
Login  | Sign Up  |  Oriprobe Inc. Feed
China/Asia On Demand
Journal Articles
Laws/Policies/Regulations
Companies/Products
Bookmark and Share
Diagnosis of crack on the generator rotor by means of vibration monitoring
Author(s): 
Pages: 49-52
Year: Issue:  5
Journal: ELECTRIC POWER

Keyword:  汽轮发电机转子裂纹振动监测;
Abstract: 直接确定裂纹的方法仅能够在停机条件下检测.振动监测在运行状态下进行,对诊断裂纹尤为重要.介绍通过振动监测对一台发电机转子裂纹进行诊断的事例.该发电机主要振动特征为:转子的振动和晃度经常增大,需要经常进行平衡,而且平衡的方向接近;并网后振动随负荷增大,增大表现有时为渐变的,有时为突变的;到一定阶段后,振动失去再现性,即便进行平衡调整也不起作用.依据裂纹转子振动的机理,判断转子可能存在裂纹,经检查发现表面裂纹的长度已经超过圆周的80%.由于判断准确检查及时,避免了一场重大事故的发生.
Related Articles
No related articles found