The temperature fields of the sealing rings of a dry gas seal are the basis for analyzing face distortions.Three-dimensional models of the rotating ring,stationary ring,and clearance gap of type-A dry gas seal with a spiral grooved face were built.A three-dimensional steady-state heat conduction equation for the sealing rings was solved using ANSYS Workbench and the temperature fields of sealing rings were obtained.The results showed that viscous shear heat of the gas film was the main heat source of the dry gas seal system.84% of viscous shear heat was transferred to the rotating ring through the seal end face.Only 9.7% of the heat was transferred to the stationary ring.And the remaining was carried away by the leakage gas. The average temperature of the rotating ring was slightly higher than that of the stationary ring.The temperature of the end face for each seal ring was higher than that of the back of the ring.The temperature of the end face for each ring was not uniform and achieved the highest near the root of a spiral groove.These results provide the basis for the improvement of theory on the research of the face distortions of the rotor and the stator of a dry gas seal,the selection of their materials,and design of their structures.
