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Analysis of temperature and thermal deformation of main seal in double mechanical seal in medium with moderate temperature and high viscosity |
CHEN Huilong, ZOU Qiang, ZHAO Binjuan, FU Jie, LIU Jinfeng |
School of Energy and Power Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China |
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Abstract To grasp characteristics of heat transfer and deformation of the main seal in a double mechanical seal in a medium with moderate temperature and high viscosity, and to understand influences caused by the pressure and temperature of flushing liquid, as well as to provide a reference for the sealing performance improvement and an efficient control on flushing liquid, an AR201 double mechanical seal for emulsion equipment is taken as the study object, then a heat transfer computational model is established, finally, the temperature field is analyzed based on finite element method, and the temperature and deformation of the sealing rings are studied when the pressure and temperature of flushing liquid varing. The results indicate that the highest temperature is near the outside of contact face of two rings, the temperature inside the stationary ring is significantly lower than outside the ring because of the cooling effect of flushing liquid, the temperature in the rotational ring reduces gradually from the contact face along the axial direction. The highest temperature and the maximum thermal deformation rise with increasing pressure and temperature. The maximum deformation and its magnitude caused from the change in flushing liquid operating parameters are closely related to the material of the rings. Properly choosing operating pressure and temperature for a flushing liquid can be a measure to effectively improve the sealing performance. As AR201 mechanical seals, the flushing liquid with a pressure in 0.8-0.85 MPa and a lower temperature can help reduce wear on the two end faces more favourably.
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Received: 19 February 2016
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