| Zhang Bingkang (张炳康),He Lidong,Chen Guo,Zhang Zhenkun,Lv Chenglong.[J].高技术通讯(英文),2014,20(4):451~457 |
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| Experimental study on barrel viscous dampers and pipe hoops in pipeline vibration reduction |
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| DOI：10.3772/j.issn.1006-6748.2014.04.018 |
| 中文关键词: |
| 英文关键词: pipeline vibration reduction, barrel viscous damper, frequency, amplitude, pipe hoop stiffness |
| 基金项目: |
| Author Name | Affiliation | | Zhang Bingkang (张炳康) | | | He Lidong | | | Chen Guo | | | Zhang Zhenkun | | | Lv Chenglong | |
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| 中文摘要: |
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| 英文摘要: |
| The centrifugal air compressor outlet pipeline vibration was not decreased after barrel viscous dampers were installed in a petrochemical plant in Tianjin. A pipeline-damper experiment apparatus was built for studying the influence factors of the barrel viscous damper and pipe hoop in pipeline vibration reduction. The performance of the damper under different frequency and amplitude was researched respectively, the results showed that damping effect dependsed mainly on frequency and was not related to amplitude. Damper will fail when its vibration frequency exceeds its limit working frequency which was 40Hz in test. The mechanical properties and energy dissipation were analyzed by using the Maxwell model, which explains experimental results well. According to damping effect and calculation of stiffness with ANSYS in different hoop width, hoop stiffness should match pipe stiffness and keep uniform along transfer path. Damping effect will get worse when local stiffness is too small or too large. Finally, the outlet pipeline vibration was decreased by 70% after using appropriate pipe hoop width and replacing the original damping liquid. |
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