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Study on adaptive concentric performance of floating self-concentric seals

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Abstract

In present study, solution models for CTPS, CCPS, and LS were established to study radial pressure distribution of the seals and to analyze the effects of inlet/outlet pressure ratios and eccentricity ratios on floating concentric force. A floating self-concentric seal experiment apparatus was designed to study the effects of inlet/outlet pressure ratios and eccentricity ratios on response time and moving track of CTPS, CCPS and LS. The results show that CTPS has a good adaptive concentric performance, which is more suitable as a floating seal ring. Under different inlet/outlet pressure ratios and eccentricity ratios, CTPS always move towards concentric direction, and thereafter stabilizes at equilibrium location with a low eccentricity ratio, which is contributed to the greater floating concentric force counteracting friction force between the ball and plate. With the increase of inlet/outlet pressure ratio and eccentricity ratio, it takes a shorter floating response time to reach the equilibrium location.

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Abbreviations

ΔF r :

Radial airflow force

ΔX :

Slight change of radial displacement

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Acknowledgments

This study was co-supported by the National Natural Science Foundation (Grant No. 52075346), supported by the Natural Science Foundation of Liaoning Province (2019-ZD-0236) and the project was supported by Liaoning Revitalization Talents Program (XLYC2007077). All authors would like to thank them.

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Authors and Affiliations

  1. Liaoning Key Lab of Advanced Test Technology for Aerospace Propulsion System, Shenyang Aerospace University, Shenyang, 110136, China

    Huan Zhao, Jindao Guo, Dan Sun, Min Zhou & Jinyu Jiang

  2. AECC Sichuan Gas Turbine Establishment, Chengdu, 610500, China

    Ping Wang

Authors
  1. Huan Zhao
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  2. Jindao Guo
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  3. Dan Sun
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  4. Min Zhou
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  5. Jinyu Jiang
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  6. Ping Wang
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Corresponding author

Correspondence to Huan Zhao.

Additional information

Huan Zhao is an Associate Professor in the School at Shenyang Aerospace University, China. Her research interests include Rotor Dynamics, Flow-induced Vibration in Turbo-machinery, Advanced Sealing Technology, Advanced Computational Fluid Dynamics, Rotating Machinery Faults Diagnosis.

Dan Sun is a Professor in the School at Shenyang Aerospace University, China. His research interests include Rotor Dynamics, Flow-induced Vibration in Turbo-machinery, Advanced Sealing Technology, Advanced Computational Fluid Dynamics, Rotating Machinery Faults Diagnosis.

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Zhao, H., Guo, J., Sun, D. et al. Study on adaptive concentric performance of floating self-concentric seals. J Mech Sci Technol 36, 2165–2174 (2022). https://doi.org/10.1007/s12206-022-0401-6

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  • DOI: https://doi.org/10.1007/s12206-022-0401-6

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