Frictional heat generated by high-speed friction of aerospace mechanical seals induces temperature rise of the sealing rings and end face thermal deformation, and even leads to seal failure. This paper aims to conduct research on the thermal characteristics of mechanical seals and obtains the variation laws of the temperature field and thermal deformation characteristics of mechanical seals.
The frictional heat sources on the sealing surface are calculated, the boundary conditions of mechanical seals are determined, and the thermo-mechanical coupling model is established. Based on the MM6000 testing machine, temperature rise verification tests for mechanical seals are carried out to verify the accuracy of the simulation model.
Thermal warpage deformation occurs on the sealing surface of the rotating ring, and the maximum deformation of the mechanical seals is located at the outer diameter of the rotating ring’s sealing surface. Meanwhile, the actual contact area and high-temperature zone on the sealing surface gradually move from the radial outer side to the inner side with operating time. The maximum error between the simulation and experimental values is 15.5%, which verifies the accuracy of the simulation model in this paper.
A thermo-mechanical coupling model for analyzing the thermal characteristics of mechanical seals is established, which provides a reference for the study of the thermal characteristics of mechanical seals.
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