Petro-chemical Equipment Technology ›› 2020, Vol. 41 ›› Issue (2): 24-28.doi: 10.3969/j.issn.1006-8805.2020.02.007

• CONDITION MONITORING AND ANALYSIS • Previous Articles     Next Articles

Cause Analysis and Treatment of Large Vibration of Screw Compressor

Liu Yu, Wen Quanguo, Sun Huali, Wang Chuanrong, Zhang Yanquan   

  1. Equipment Maintenance Branch of PetroChina Dushanzi Petrochemical Company, Dushanzi, Xinjiang, 833699
  • Received:2019-07-26 Accepted:2020-02-25 Online:2020-04-03 Published:2020-04-03

Abstract: Based on the analysis of the frequent large vibration failures of screw compressors, it is concluded that gear damage, rotor bending and dynamic imbalance are the main causes for the large vibration of the unit. Such methods as replacing the old gears with new ones, surfacing welding and turning of rotor bending parts and weight-removing to remove dynamic imbalance are adopted to eliminate the failure completely. This case also provides reference for the failure treatment of the same type of equipment.

Key words: screw compressor, vibration, cause analysis, treatment