Flange plate with sealing structure

Abstract

The utility model provides a flange plate with a sealing structure, which belongs to the technical field of flange plates and comprises a flange plate, a necking taper pipe is arranged at a flange hole of the flange plate, and the aperture of one end of the necking taper pipe far away from the flange plate is larger than that of the joint of the necking taper pipe and the flange plate. The deformation grooves are formed in the edge of the large-aperture end of the necking taper pipe in the circumferential direction, and the pipe openings where the five deformation grooves are located are scattered, deformed and clamped to the inner wall of a butt joint pipeline, so that the stability between the flange plate and the butt joint pipeline is improved, and then the sealing performance after the flange plate and the butt joint pipeline are connected is improved; a circumferential butt joint groove is formed in the surface of the flange plate on one side where the necking taper pipe is located in the circumferential direction, and the butt joint groove and the sealing ring correspond to each other on the two sides of the flange plate, so that when the two flange plates are in butt joint, the sealing ring on one flange plate is clamped in the butt joint groove of the other flange plate; and the sealing performance of the two flange plates after butt joint is improved through the sealing ring.

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