含气率变化对不同型式混输泵的振动特性影响研究

朱国俊,门羿,冯建军,李康,闫思娜,李晨昊

振动与冲击 ›› 2022, Vol. 41 ›› Issue (17) : 185-192.

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振动与冲击 ›› 2022, Vol. 41 ›› Issue (17) : 185-192.
论文

含气率变化对不同型式混输泵的振动特性影响研究

  • 朱国俊,门羿,冯建军,李康,闫思娜,李晨昊
作者信息 +

Effects of gas volume fraction variation on vibration characteristics of different types multiphase pumps

  • ZHU Guojun, MEN Yi, FENG Jianjun, LI Kang, YAN Sina, LI Chenhao
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摘要

研究含气率变化对混输泵关键部位振动特性的影响规律对混输泵运行稳定性提升有重要意义。首先,本文在不同含气率工况下对叶轮型式不同的两种多级气液混输泵PR泵和PH泵开展了关键部位的振动测量。然后,统计了振动信号的时频特性。最后,构建了(均方根, 峭度)二维特征量作为指标开展振动信号的特征分析。结果表明:相对含气率由0%增加到100%时,两种混输泵的轴承箱体及泵进口处振动均出现了增强,其中,振动烈度最大的部位为轴承箱体,且PH泵的轴承箱体最大振动烈度高于PR泵;含气率的增加使PR泵轴承箱体的振动能量更加明显的向泵进口处位置传播;在轴承箱振动信号的(均方根, 峭度)二维特征值图上,通过零峭度线可以清晰区分PR泵和PH泵。此外,PR泵所有测点处振动信号的峭度值均高于PH泵,表明在当前试验条件下,PR泵存在故障的可能性高于PH泵。
关键词:混输泵;振动;时频特性;均方根;峭度

Abstract

To improve the operation stability of the multiphase pump, it is important to study the influence of gas volume fraction (GVF) change on the vibration characteristics of the pump’s key parts. Firstly, under different GVF conditions, the vibration measurements of PR pump and PH pump which are two different multi-stage multiphase pump with different types of impeller were carried out. Then, the time-frequency characteristics of the vibration signal were analyzed. Finally, a two-dimensional characteristic value (Root mean square, Kurtosis) was constructed to carry out characteristic analysis of vibration signal. The results show that when the relative GVF is increased from 0% to 100%, the vibration of the bearing housing and pump inlet of the two kinds of multiphase pump are enhanced. And the bearing housing has the greatest vibration severity. The maximum vibration severity of the bearing housing of the PH pump is higher than that of the PR pump. The vibration energy of the PR pump’s bearing housing is transferred to pump inlet more significantly with the GVF increased. On the two-dimensional Root mean square-Kurtosis diagram of bearing housing vibration signal, the PR pump and PH pump can be clearly distinguished by zero kurtosis line. In addition, the kurtosis value of vibration signal at all measuring points of PR pump is higher than that of PH pump, which indicating that the probability of PR pump failure is higher.
Key words: Multiphase pump; Vibration; Time-frequency characteristics; Root mean square; Kurtosis

关键词

混输泵 / 振动 / 时频特性 / 均方根 / 峭度

Key words

Multiphase pump / Vibration / Time-frequency characteristics / Root mean square / Kurtosis

引用本文

导出引用
朱国俊,门羿,冯建军,李康,闫思娜,李晨昊. 含气率变化对不同型式混输泵的振动特性影响研究[J]. 振动与冲击, 2022, 41(17): 185-192
ZHU Guojun, MEN Yi, FENG Jianjun, LI Kang, YAN Sina, LI Chenhao. Effects of gas volume fraction variation on vibration characteristics of different types multiphase pumps[J]. Journal of Vibration and Shock, 2022, 41(17): 185-192

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