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针对发电机组轴向振动产生的原因进行了分析和检测,发现了内冷水导管堵塞引起的转子局部热变形是造成轴向振动过大的原因。根据分析和检测的结果,采取了相应的消除措施,有效降低了机组系统的轴向振动。
The causes of axial vibration of generator set were analyzed and tested. It was found that the local thermal deformation of the rotor caused by blockage of the inner cooling water conduit was the cause of excessive axial vibration. According to the results of analysis and testing, corresponding elimination measures have been taken to effectively reduce the axial vibration of the unit system.