Open AccessDiagnosis and treatment of an abnormal vibration caused by oil whirl
Author(s) -
Lyuzhou Ma
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1748/6/062028
Subject(s) - vibration , bearing (navigation) , stiffness , structural engineering , geology , engineering , computer science , acoustics , physics , artificial intelligence
During normal operation of a 680MW unit, the vibration of No.1 bearing frequently fluctuated greatly, which caused the unit to trip. Through the test and analysis of the vibration data, it was diagnosed that the cause of vibration was oil whirl caused by insufficient bearing stability. By optimizing the installation data of bearing and adjusting shafting center, adopting special method to strengthen the stiffness of No.1 bearing, the stability of bearing bush was improved. After vibration treatment, the vibration of No.1 bearing returned to normal value.