End face dry gas sealing structure

The invention discloses an end face dry gas sealing structure which comprises a movable ring and a static ring, at least one of two sealing end faces between the movable ring and the static ring is a grooving sealing end face provided with a plurality of simulated dragonfly wing-shaped grooves, and a sealing weir is formed in the non-grooving area between every two adjacent simulated dragonfly wing-shaped grooves in the outer diameter side of the grooving sealing end face. A sealing dam is formed in the non-grooving annular area on the inner diameter side of the grooving sealing end face. Each simulated dragonfly wing-shaped groove comprises a main vein groove and a plurality of branch vein grooves, each main vein groove is located on the windward side of the corresponding simulated dragonfly wing-shaped groove and extends from the outer diameter side to the inner diameter side, the branch vein grooves and the main vein grooves communicate at an angle and are sequentially formed at intervals in the radial dir