Vibration and Stability Evaluation of Magnetically Suspended Fluid Machinery Based on API617

ZHANG Yue; XU Yuanping; ZHOU Jin; ZHOU Yang

doi:10.3969/j.issn.0258-2724.20240340

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Journal of Southwest Jiaotong University > 2025 > Accepted Manuscript

ZHANG Yue, XU Yuanping, ZHOU Jin, ZHOU Yang. Vibration and Stability Evaluation of Magnetically Suspended Fluid Machinery Based on API617[J]. Journal of Southwest Jiaotong University. doi: 10.3969/j.issn.0258-2724.20240340

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ZHANG Yue, XU Yuanping, ZHOU Jin, ZHOU Yang. Vibration and Stability Evaluation of Magnetically Suspended Fluid Machinery Based on API617[J]. Journal of Southwest Jiaotong University. doi: 10.3969/j.issn.0258-2724.20240340

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Vibration and Stability Evaluation of Magnetically Suspended Fluid Machinery Based on API617

doi: 10.3969/j.issn.0258-2724.20240340

College of Mechanical & Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

Received Date: 12 Jul 2024
Rev Recd Date: 05 Nov 2024

Available Online: 21 Feb 2025

Abstract

Abstract

To evaluate the design rationality and operation reliability of the magnetically suspended fluid machinery, the API617 standard was applied to analyze its vibration and stability. Firstly, the relevant specifications and requirements for magnetically suspended fluid machinery in the API617 standard were introduced. Then, a magnetically suspended blower was taken as the research object, and rotor dynamics analysis, closed-loop transfer function testing, vibration analysis, stability evaluation, and other work were carried out based on the API617 standard. The results indicate that all indicators meet the API617 standard requirements. The separation margins between the rotor operating speed and critical speed are 69.7% and 53.8%, respectively, and the design is reasonable. The modelling of the magnetically suspended rotor system is accurate and can be used to predict the dynamic behavior of the rotor; the peak sensitivity transfer function values of the radial active magnetic bearing (AMB) system are all in zone A, while those of the axial AMB are in zone B, meeting the requirements for long-term and stable operation. The rotor vibration within the operating speed range is less than 10 μm, far below the vibration limit requirement.
- magnetically suspended fluid machinery,
- active magnetic bearing,
- API617 standard,
- vibration analysis,
- stability evaluation

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References

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