High-vacuum flange sealing assembly

Abstract

The invention discloses a high-vacuum flange sealing assembly. The high-vacuum flange sealing assembly comprises a sealing ring, wherein a first flange disc and a second flange disc are fixedly connected to the two sides of the sealing ring through fastening bolts; a fastening nut is connected to the tail end of each fastening bolt in a threaded manner, the outer side of the sealing ring is provided with a flanged edge, a contact ring is fixedly connected to the middle portion of the sealing ring, and an inner sealing ring is fixedly connected to the interior of the sealing ring; and a salient-point circular ring is bonded to the upper surface of the sealing ring, bolt holes are formed around the contact ring, and a through hole is formed in the middle portion of the inner sealing ring. According to the high-vacuum flange sealing assembly, a special structure is adopted for increasing the contact area between the flange discs, the sealing effect is improved, the sealing effect on the flange discs is improved by means of high elasticity of the natural rubber flanged edge, sealing failure caused by sealing surface separation due to overstretching can be effectively prevented throughthe salient-point circular ring, an internal medium can be adsorbed through the silicone inner sealing ring, and the service life of the sealing ring can be prolonged.

Description

technical field [0001] The invention relates to the technical field of mechanical connection flange seals, in particular to a high vacuum flange seal. Background technique [0002] Flange is a metal part that connects pipes and pipes. It involves basically all pipeline engineering and mechanical connection fields. It has the characteristics of high sealing and high stability. Axial force is generated to cause the bolts to be stretched, and the flange sealing surfaces will move along the direction of separation from each other, which will reduce the sealing performance between the flanges, and seals are often inserted at the flange connection, while conventional seals are Thin disc gaskets are mainly used, but their sealing mainly depends on the extrusion of the gasket and the rebound effect after separation. After a long time of use, it is prone to aging damage, and it does not have good adsorption, and it is easy to accumulate internal moisture. If the seal is in a wet sta...

AI Technical Summary

Problems solved by technology

[0002] Flange is a metal part that connects pipes and pipes. It involves basically all pipeline engineering and mechanical connection fields. It has the characteristics of high sealing and high stability. Axial force is generated to cause the bolts to be stretched, and the flange sealing surfaces will move along the direction of separation from each other, which will reduce the sealing performance between the flanges, and seals are often inserted at the flange connection, while conventional seals are Thin disc gaskets are mainly used, but their sealing mainly depends on the extrusion of the gasket and the rebound effect after separation. After a long time of use, it is prone to aging damage, and it does not have good adsorption, and it is easy to accumulate internal moisture. If the seal is in a wet state, it is easy to accelerate the aging of the seal, thus affecting the tightness of the internal seal

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