Thermohydrodynamic analysis on herringbone-grooved mechanical face seals with a quasi-3D model

Meng, Xiangkai; Zhao, Wenjing; Shen, Mingxue; Peng, Xudong

doi:10.1177/1350650117752952

Cited by 17 publications

(8 citation statements)

References 21 publications

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“…The physical properties of the mechanical seal are revealed in Table 3. The sealed medium is lubricating oil,24 and the viscosity-temperature relationship can be expressed as, …”

Section: Theoretical Modelsmentioning

confidence: 99%

Thermal mixing effect and heat transfer in U-shaped notch on the mechanical seal face

Qiu

Meng

Liang

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part J:

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A three-dimensional thermohydrodynamic (THD) model of a notched mechanical seal is developed based on the commercial software ANSYS Fluent. The flow behavior of hot and cold fluid in and around the notch, namely, the thermal mixing effect, is detailly analyzed. The heat transfer between the notch fluid and the seal rings as well as the cooling effect mechanism of the notch are discussed. Finally, a parametric analysis is conducted to study the effect of notch size, rotational speed and seal gap on heat transport. The results show that the notch fluid locally decreases the notched stator face temperature around the notch boundaries. The reflux occurs between the sealing chamber and notch, which brings the most cooling effect to the notch. The notch depth and width have a significant effect on the heat transfer between the fluid and sealing rings. Because of the non-simplified THD model, the proposed research provides increased reliability of understanding the flow and temperature behavior in the notch.

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“…The physical properties of the mechanical seal are revealed in Table 3. The sealed medium is lubricating oil,24 and the viscosity-temperature relationship can be expressed as, …”

Section: Theoretical Modelsmentioning

confidence: 99%

Thermal mixing effect and heat transfer in U-shaped notch on the mechanical seal face

Qiu

Meng

Liang

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…1,2 Low leakage and friction of end faces can be obtained by liquid film seals with herringbone grooves that consist of an inner groove and an outer spiral groove. 3,4 For the non-contacting liquid film seal, the dynamic characteristics of the liquid film directly impact the sealing performance. Shaft drifting, vibration, and primary ring's misalignment weaken the stability of the liquid film and result in the excessive leakage and rubbing rotor.…”

Section: Introductionmentioning

confidence: 99%

Dynamic characteristics of a non-Newtonian lubrication mechanical seal with herringbone grooves considering cavitation effect

Liu,

Yu,

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part J:

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This research investigated the effect of lubricant's non-Newtonian properties on dynamic characteristics of a herringbone grooved liquid film seal (HG-LFS) considering cavitation. A modified steady-state perturbation Reynolds equation of the non-Newtonian was derived. Visualized experiments were conducted to verify the accuracy of calculations. The non-Newtonian effect on stiffness, cavitation, damping coefficients, and other sealing performance of the liquid film seal at different velocity, pressure and film thickness were discussed and analyzed. The results indicate that the seal has larger stiffness and damping coefficients with the dilatant lubricant, the cavitation can be inhibited by the shearing-thinning lubricant, and the impact of non-Newtonian on the seal stability decreases with the increase of film thickness. This study would contribute to the design and theoretical research of liquid film seals.

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“…Wang et al [13] configured a throttle hole on the stator based on this groove type, and carried out the simulation analysis and optimization work based on the orthogonal test method. Meng et al [14] proposed a quasi-3D thermal-hydrodynamic lubrication numerical model, and carried out a parametric analysis about the influence of the structural parameters of the herringbone grooves on the performance. Xu et al [15] applied the herringbone groove structure to a new type of composite face seal that relies on superconducting magnetic force to improve lubrication effect and stability.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Leakage and Thermal Features of Herringbone-Grooved Oil-Film-Lubricated Mechanical Face Seals

Hao

Ren³

et al. 2022

Tribology Online

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The herringbone-grooved oil-film-lubricated mechanical face seals were experimentally studied on aspects of the leakage and thermal features. The outer-diameter pressured test assembly was utilized to measure the leakage and the stator temperature of the seals at rotation speeds of 500 ~ 2500 r/min and medium pressures of 0.35 ~ 0.80 MPa. A novel method is proposed to obtain the radial temperature distribution of the stator face by fitting the measured temperatures of three spots inside the stator. Results indicate that the outer-grooved seal and the middle-grooved seal present acceptable leakage suppression effect, but the temperature increment is larger; the inner-grooved seal maintains zero leakage at lower pressure, and the temperature increment is only half of that of the rest; at higher pressure, the leakage of the inner-grooved seal is overly large; the fitted face temperature distributions contribute to explaining the abnormal phenomena (dark and bubbled) of the collected oil leakages. The mechanism of the leakage and thermal features are analyzed and discussed in aspects of the low-pressure, high-pressure, pumping, cavitation blocking effects of the grooves, as well as the convergent-sealing-gap effect due to uneven temperature profile.

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Thermohydrodynamic analysis on herringbone-grooved mechanical face seals with a quasi-3D model

Cited by 17 publications

References 21 publications

Thermal mixing effect and heat transfer in U-shaped notch on the mechanical seal face

Thermal mixing effect and heat transfer in U-shaped notch on the mechanical seal face

Dynamic characteristics of a non-Newtonian lubrication mechanical seal with herringbone grooves considering cavitation effect

Experimental Study on Leakage and Thermal Features of Herringbone-Grooved Oil-Film-Lubricated Mechanical Face Seals

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