TY - GEN
T1 - Centrifugal Kinetic Energy to Pressure Resistance Conversion
T2 - International Conference on Mechanical Design, ICMD 2025
AU - Gao, Zheng
AU - Zhu, Tairong
AU - Wu, Tong
AU - Yu, Ning
AU - Dai, Jun
N1 - Publisher Copyright:
© The Chinese Mechanical Engineering Society 2026.
PY - 2026
Y1 - 2026
N2 - Magnetic fluid dynamic sealing holds significant application value in high-speed rotating machinery, yet performance degradation caused by centrifugal forces critically limits its operational speed range. Current strategies focus on developing precise centrifugal force-sealing capacity models and optimizing structural designs, but numerical models fail to compensate for performance losses, while structural modifications face spatial constraints and inherent sealing mode limitations. Notably, centrifugal kinetic energy generated by shaft rotation represents redundant energy in these systems. This study establishes a centrifugal pressure-enhancement compensation mechanism utilizing this redundant energy, proposing a centrifugal convergence-integrated magnetic fluid seal mode. An arc-shaped pole teeth magnetic fluid seal (A-MFS) was developed, featuring a unique curved flow channel design that fundamentally alters centrifugal force effects. This innovation induces magnetic fluid confluence, achieving dynamic pressure reinforcement under rotation. Experimental validation using a dedicated testing system demonstrated that A-MFS maintains superior sealing performance under centrifugal forces, exhibiting over 300% enhancement compared to conventional rectangular pole teeth seal (R-MFS). The performance improvement escalates with rotational speed, effectively counteracting degradation tendencies. Mechanistic analysis confirms that the arc-shaped structure transforms centrifugal forces from degradation factors into performance-enhancing mechanisms through regulated fluid redistribution. This breakthrough addresses long-standing limitations in high-speed applications and significantly expands the operational boundaries of magnetic fluid seal technology. The work provides a paradigm-shifting approach for harnessing rotational energy to improve sealing performance, offering broad implications for advanced rotating machinery design.
AB - Magnetic fluid dynamic sealing holds significant application value in high-speed rotating machinery, yet performance degradation caused by centrifugal forces critically limits its operational speed range. Current strategies focus on developing precise centrifugal force-sealing capacity models and optimizing structural designs, but numerical models fail to compensate for performance losses, while structural modifications face spatial constraints and inherent sealing mode limitations. Notably, centrifugal kinetic energy generated by shaft rotation represents redundant energy in these systems. This study establishes a centrifugal pressure-enhancement compensation mechanism utilizing this redundant energy, proposing a centrifugal convergence-integrated magnetic fluid seal mode. An arc-shaped pole teeth magnetic fluid seal (A-MFS) was developed, featuring a unique curved flow channel design that fundamentally alters centrifugal force effects. This innovation induces magnetic fluid confluence, achieving dynamic pressure reinforcement under rotation. Experimental validation using a dedicated testing system demonstrated that A-MFS maintains superior sealing performance under centrifugal forces, exhibiting over 300% enhancement compared to conventional rectangular pole teeth seal (R-MFS). The performance improvement escalates with rotational speed, effectively counteracting degradation tendencies. Mechanistic analysis confirms that the arc-shaped structure transforms centrifugal forces from degradation factors into performance-enhancing mechanisms through regulated fluid redistribution. This breakthrough addresses long-standing limitations in high-speed applications and significantly expands the operational boundaries of magnetic fluid seal technology. The work provides a paradigm-shifting approach for harnessing rotational energy to improve sealing performance, offering broad implications for advanced rotating machinery design.
KW - Arc-shaped pole teeth
KW - Centrifugal force compensation
KW - Magnetic fluid seal
UR - https://www.scopus.com/pages/publications/105041203173
U2 - 10.1007/978-981-95-7342-4_30
DO - 10.1007/978-981-95-7342-4_30
M3 - Conference contribution
AN - SCOPUS:105041203173
SN - 9789819573417
T3 - Mechanisms and Machine Science
SP - 421
EP - 442
BT - Advances in Mechanical Design - Proceedings of the 2025 International Conference on Mechanical Design ICMD 2025
A2 - Tan, Jianrong
A2 - Liu, Zhenyu
A2 - Hu, Weifei
PB - Springer Science and Business Media B.V.
Y2 - 9 May 2025 through 11 May 2025
ER -