Abnormal Vibration Diagnosis of High Pressure LNG Pump

고압 LNG 펌프의 이상 진동 진단

  • 김학은 (한국가스기술공업, 경상대학교 대학원) ;
  • 최병근 (경상대학교 기계항공공학부 해양산업연구소)
  • Published : 2005.05.31

Abstract

Liquefied natural gas takes up six hundredths of the volume of natural gas, which makes storage and transportation much easier. To send out natural gas via a pipeline network across the nation, high-pressure LNG pumps supply highly compressed LNG to high-pressure vaporization facilities. The Number of high-pressure LNG pumps determined the send-out amount in LNG receiving terminal. So it is main equipment at LNG production process and should be maintained on best conditions. In this paper, to find out the cause of high beat vibration at cryogenic pumps, vibration and motor current signal analysis have been performed. High vibration of cryogenic pumps could be reduced due to the modification of motor rotor.

Keywords