Coupling Analysis of Fluid Film and Thermal Deformation of Sealing Members in Spiral Groove Mechanical Seal

Abstract:

The thermo-hydrodynamic effect in the spiral groove mechanical seal was investigated. The coupling analysis of the fluid film and the thermal deformation of sealing rings was carried out, the separation angle obtained, and the shape of the gap between the two deformed end faces determined. The results indicate that the increase of the temperature of the fluid film and the thermal deformation of the sealing rings cause the increase of the leakage rate. There exists a critical rotating speed, when the rotating speed is lower than the critical speed, the bearing force increases with the increase of the rotating speed, and once the rotating speed is higher than the critical speed, the bearing force decreases reversely. The thermal deformation weakens the hydrodynamic effect of the spiral groove mechanical seals.

• Periodical: Key Engineering Materials (Volumes 353-358)
• Pages: 2455-2458
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.353-358.2455
• Online since: September 2007
• Authors: Jian Feng Zhou, Bo Qin Gu
• Keywords: Coupling Analysis, Fluid Film, Mechanical Seal, Spiral Groove, Thermal Deformation

References

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[3] J.F. Zhou: A Dissertation for the degree of Doctor of Engineering in Nanjing University of Technology. (2006) hi=0. 5µm hi=1. 0µm hi=2. 0µm hi=3. 0µm hi=4. 0µm β [10-4rad] 100 200 300 400 500 600 700 800.

DOI: 10.1108/lhtn.2006.23923caa.001

[1] [2] [3] [4] [5] [6] [7] ω [rad·s -1 ] Fig. 3 Values of β corresponding to hi and ω Tm [ C].

[1] 2 3 4 5 6 7 8 9 10 11.

[20] [24] [28] [32] [36] [40] 0. 65 0. 70 0. 75 0. 80 0. 85 0. 90 0. 95 1. 00 µ(Tm) [10-3kg·m -1·s -1] Fig. 4 Tm and µ(Tm) along radius.

[1] Tm, ω=800 rad·s -1.

[2] Tm, ω=600 rad·s -1.

[3] Tm, ω=400 rad·s -1.

[4] Tm, ω=200 rad·s -1.

[5] µ(Tm), ω=200 rad·s -1.

[6] µ(Tm), ω=400 rad·s -1.

[7] µ(Tm), ω=600 rad·s -1.

[8] µ(Tm), ω=800 rad·s -1 F Q 100 200 300 400 500 600 700 800 1900 2000 2100 2200 2300 2400 2500 2600.

[4] [6] [8] [10] [12] F [N] Q [10-8m 3·s -1].