Study on Vibration Reduction Measures of Pipeline in a Compressor Station

doi:10.11885/j.issn.1674-5086.2021.08.10.01

Abstract

Abstract: Aiming at the problem of abnormal vibration of natural gas station pipeline, taking the outbound pipeline of a compressor station as the research object, the station pipeline vibration analysis is carried out, the station pipeline numerical model is established, and the correctness of the model is verified by field vibration test. The fluid-structure coupling method is used to analyze the vibration of pipelines under different working conditions. Then two vibration reduction schemes are proposed and verified by simulation. The main conclusions are as follows: 1) The fluid pressure fluctuation in the pipeline is the root cause of the abnormal vibration phenomenon of the station pipeline. 2) Through the analysis of the fluid pressure fluctuation spectrum in the pipeline, it is found that the pressure fluctuation in the pipeline is mainly concentrated in the low frequency range, and the pressure fluctuation frequency in the pipeline is close to the first two natural frequencies of the pipeline system. Therefore, the resonance phenomenon of the pipeline system makes the vibration more intense. 3) In the two vibration reduction schemes proposed, the diameter of connecting pipeline increased from Φ711 mm to Φ1 016 mm, and appropriate restraint measures are added. The results show that the scheme has the best damping effect, and the pipeline vibration level evaluation is excellent.

Key words: natural gas pipeline, vibration, CFD technology, fluid-structure coupling, vibration reduction

CLC Number:

TE832
X937

LIU Enbin, LIAN Dianpeng, WANG Xingjie, SU Zhongya, XIE Ping. Study on Vibration Reduction Measures of Pipeline in a Compressor Station[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2023, 45(6): 175-184.

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