Thermal Analysis and Optimization of Structural Parameters for Dry Gas Seal Rings.

Leakage is the primary failure form of the dry gas seal, while the end face of the seal ring makes the main leaking channel. For some specific conditions, based on the relationships between the structural parameters and the gas film properties of the seal ring, the methods of finite element simulation and orthogonal optimization were used to select a better combination of the seal ring end face structural parameters. In addition, the steady-state heat distribution of the seal ring was simulated. On the basis of that, the thermal deformation of the seal ring was computed to explore the relationships between the material parameters and the sealing properties of the seal ring. The research results show that, except the elastic modulus, the thermal conductivity, Poisson' s ratio and thermal expansion coefficient are all in a quasi-linear relationship with the thermal deformation of the seal ring. The work has guiding significance and reference value for the design and optimization of dry gas seal rings. [ABSTRACT FROM AUTHOR]