Influence of inlet pressure disturbance on transient performance of liquid oxygen lubricated mechanical seal and rub-impact phenomenon caused by excitation overload

Xu, Liang; Wu, Jiu Hui; Yuan, Xiao; Hao, Minghui; Liu, Fuyu; Liu, Yangyang; Xie, Xiaolong

doi:10.1016/j.triboint.2022.108058

Cited by 7 publications

(3 citation statements)

References 24 publications

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“…Wang et al (2021) analyzed the transient dynamic response of non-Newtonian fluid-lubricated spiral groove liquid film seals using a full numerical method. Xu et al (2023) investigated the influence of the inlet pressure disturbance on the transient performance of a liquid film seal, and the results indicated that an increase in the rotational speed and outer pressure improved the stability of the sealing system.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the dynamic characteristics for high-speed mechanical seal considering turbulent cavitating flow and inertia effect

Wang,

Hao,

2024

ILT

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Purpose This study aims to investigate the dynamic characteristics of a high-speed mechanical seal by considering the flow regime, cavitation phenomenon and inertia effect. Design/methodology/approach Based on the high-speed conditions of a mechanical seal with a low-viscosity fluid, a multi-factor coupled lubrication model of a mechanical seal is established. The perturbation Reynolds equation set is derived using the perturbation method, and the effects of turbulent flow and inertia on sealing performance are discussed. Findings The results indicate that turbulence significantly influences the dynamic characteristics of low-viscosity fluids under high-speed conditions. Originality/value The results of the dynamic characteristics presented in this study are expected to provide guidance for the design of mechanical seals.

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Section: Introductionmentioning

confidence: 99%

Investigation on the dynamic characteristics for high-speed mechanical seal considering turbulent cavitating flow and inertia effect

Wang,

Hao,

2024

ILT

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“…Wang et al (2021a, 2021b) aimed at the lubrication rheological property effect on the instability of mechanical seals based on the small perturbation model and presented a Rayleigh-step groove to improve the stability of liquid film seals. Xu et al (2022, 2023) improve the lubrication and stability of mechanical seals by attaching the superconducting magnetic force and indicated the lubrication regime transition during the dynamic characteristic research studies of seals are the key points. Jiang et al (2019, 2020) improved the stability of dry gas seals by enhancing the film stiffness via the surface textures.…”

Section: Introductionmentioning

confidence: 99%

“…Wang et al (2021aWang et al ( , 2021b aimed at the lubrication rheological property effect on the instability of mechanical seals based on the small perturbation model and presented a Rayleigh-step groove to improve the stability of liquid film seals. Xu et al (2022Xu et al ( , 2023 improve the lubrication and stability of mechanical seals by attaching the superconducting magnetic force and indicated…”

Section: Introductionmentioning

confidence: 99%

Analysis of dynamic characteristics of liquid-lubricated mechanical face seals with inclined elliptical grooves

Fuyu,

Bo,

Yongfan

et al. 2023

ILT

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Purpose The purpose of this paper is to study the dynamic characteristics of mechanical face seals with liquid-lubricated inclined elliptical grooves. Design/methodology/approach The steady-state and perturbation Reynolds control equations of liquid films were established. The film pressure and the liquid film dynamic coefficients were obtained, impacts of groove structures on the liquid film dynamic characteristic coefficients were analyzed. Findings The analysis results indicate that the axial dynamic stiffness and damping coefficients of the liquid film seal with inclined elliptical grooves are far greater than those of the angular directions. Furthermore, the dynamic stiffness coefficient of the liquid film with the nonclosed inclined elliptical grooves is higher than those with the closed grooves, whereas the dynamic damping coefficient of the liquid film is lower. Originality/value The effects of inclined elliptical groove structures on the dynamic characteristics of the liquid film seal are investigated. The results presented are expected to enrich the theoretical basis of optimizing the dynamic performance of liquid film seals with textures.

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Investigation on transient response of gas face seals based on a double mass kinematic model considering Coulomb friction

Teng,

Jiang,

Peng

et al. 2024

J Braz. Soc. Mech. Sci. Eng.

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Influence of inlet pressure disturbance on transient performance of liquid oxygen lubricated mechanical seal and rub-impact phenomenon caused by excitation overload

Cited by 7 publications

References 24 publications

Investigation on the dynamic characteristics for high-speed mechanical seal considering turbulent cavitating flow and inertia effect

Investigation on the dynamic characteristics for high-speed mechanical seal considering turbulent cavitating flow and inertia effect

Analysis of dynamic characteristics of liquid-lubricated mechanical face seals with inclined elliptical grooves

Investigation on transient response of gas face seals based on a double mass kinematic model considering Coulomb friction

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