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Research on the temperature field of a dry gas seal

For further research on temperature field and thermal strain of dry gas seal, numerical simulation is carried out. It is discovered, the temperature of rotating ring declined gradually from inside to outside, maximum temperature (85.45°C) appeared at the inner side of the face, minimum temperature (72.18°C) appeared at the left outside of the ring, with a temperature difference of 13.27°C. The face temperature curve is similar to a parabola; the position maximum temperature appeared is 8.7mm distant from inside, outside of the face has the minimum temperature, with a temperature difference of 3.25°C. By using the material with higher thermal conductivity and controlling the position of face groove, the thermal strain is reduced, gas dynamical reaction and film stiffness is enhanced, thereby, higher stability will be gained.