Thermal Deformation Analysis of Bionic Bee Wing Groove Dry Gas Seal

Abstract

In order to solve the problems of insufficient opening force and insufficient stability of end face lubrication under the condition of frequent start and stop of dry gas seal or medium and low speed, a bionic bee wing groove dry air seal was designed and studied. Different from the traditional spiral groove, the WIHS bee wing structure is divided into main wings and auxiliary wings, forming a double-wide channel inlet design, through the double-wide channel inlet and narrow groove root, it can form a more stable air film during operation. The finite element method was used to analyze the thermal deformation and force deformation of the WIHS model imitation bee wing trough texture of silicon carbide material, and the waviness and taper deformation of the sealing end face were studied, and the following key conclusions were drawn: under the influence of thermal deformation, the waviness deformation of the WIHS model showed a three-period approximate chord function transformation law, and the taper deformation showed a trend of first decreasing and then increasing, and there were different degrees of taper deformation in the inner and outer diameters of the moving ring, and the taper deformation of the outer diameter was greater. Under the influence of force deformation, the amplitude of the waviness deformation is relatively stable, but the total deformation is larger, and the taper deformation increases first and then decreases from the inner diameter to the outer diameter.