某丙烷脱氢装置大型管道高频振动特性分析

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振动与冲击 ›› 2025, Vol. 44 ›› Issue (4) : 144-150.

振动理论与交叉研究

某丙烷脱氢装置大型管道高频振动特性分析

贺佳*1,2 ，梁浩华1,2，张国华3，杨玉强3，胡美妃1,2，陈政清1,2

作者信息 +

Research on high-frequency vibration of large pipeline of a propane dehydrogenation unit

HE Jia*1,2,LIANG Haohua1,2,ZHANG Guohua3,YANG Yuqiang3,HU Meifei1,2,CHEN Zhengqing1,2

Author information +

文章历史 +

摘要

大型石化管道服役期间，受复杂工作环境影响，可能发生高频剧烈振动，影响结构正常使用，并存在较大的安全隐患，因此，很有必要对此类振动现象开展相关研究。本文以某丙烷脱氢装置的大型管道为对象，基于现场实测数据，分析了管道振动特性，并利用传递矩阵法，获取了管道内部不同工况下的气柱固有频率。研究发现：管道振动的加速度幅值大、位移幅值小，振动频率较高，且卓越频率之间存在明显的倍数关系，即倍频现象，如26Hz和52Hz；气柱固有频率与管道固有频率接近，结合压缩机的激励频率，引发了管道的共振现象。本文采用的方法简便高效，可用于分析丙烷脱氢装置大型管道的振动特性，探求管道振动的原因，并为类似管道的性能评估和减振方案设计提供参考依据。

Abstract

During dehydrogenation operations, large-scale petrochemical pipelines are prone to high-frequency severe vibrations and significant noise pollution due to complex working environments, affecting structural integrity and posing safety hazards. Therefore, it is essential to study the vibration phenomena and mechanisms. This paper focuses on a large pipeline of a propane dehydrogenation unit, analyzes the vibration characteristics based on field measurement data, and uses the transfer matrix method to obtain the natural frequencies of the gas column under different working conditions. Findings indicate that the pipeline has high vibration acceleration but low displacement, with a high frequency and a clear multiple relationship between the dominant frequencies, such as 26Hz and 52Hz. The natural frequency of the gas column is close to that of the pipeline, and the excitation frequency from the compressor leads to resonance. The methods used in this study are simple and efficient, suitable for analyzing the vibration characteristics and causes of large-scale propane dehydrogenation pipelines in practical engineering, and provide a reference for the performance evaluation and vibration reduction design of similar pipelines.

导出引用

贺佳1, 2, 梁浩华1, 2, 张国华3, 杨玉强3, 胡美妃1, 2, 陈政清1, 2. 某丙烷脱氢装置大型管道高频振动特性分析[J]. 振动与冲击, 2025, 44(4): 144-150

HE Jia1, 2, LIANG Haohua1, 2, ZHANG Guohua3, YANG Yuqiang3, HU Meifei1, 2, CHEN Zhengqing1, 2. Research on high-frequency vibration of large pipeline of a propane dehydrogenation unit[J]. Journal of Vibration and Shock, 2025, 44(4): 144-150

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