Metal graphite symbiotic high-temperature fluid sealing element forming process method

Abstract

The invention discloses a metal graphite symbiotic high-temperature fluid sealing element forming process method. A graphite material filling ring is of an annular structure; the graphite material filling ring comprises a central graphite structure and edge meshed metal structures; the meshed metal structures are arranged on the inner ring and the outer ring of the central graphite structure in anintertwining mode; and two meshed metal structures positioned on the inner ring and the outer ring are independent from each other. Permeating graphite structures are arranged in the meshed metal structures, and the meshed metal structures are connected with the central graphite structure in an integral forming mode via the permeating graphite structures. Metal meshes are matched with graphite, the arrangement of the meshed metal structures can protect the central graphite structure, and the arrangement of the permeating graphite structures can lubricate with meshed metal structures. According to the process method, the meshed metal structures are arranged to improve the anti-oxidation and high-temperature resisting capacity of the graphite material filling ring, and the meshed metal structures are good in stability as a sealing protective layer.

Description

technical field [0001] The invention relates to the technical field of pipeline seals, in particular to a forming process for metal-graphite symbiotic high-temperature fluid seals. Background technique [0002] Graphite packing ring is a widely used seal, mostly used for pipeline sealing. When the traditional graphite packing ring made of pure graphite works in a high temperature and high pressure environment, the graphite component is easily oxidized, resulting in quality loss of the graphite packing ring, greatly reducing the sealing effect, and even causing leakage in severe cases. [0003] For this reason, there has been a technical solution of using metal mesh or metal strips and graphite to compositely process graphite packing rings to improve the working performance of graphite packing rings under high temperature and high pressure environments. However, although the use of metal materials to coat graphite can play a role in sealing graphite, the graphite packing rin...

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Problems solved by technology

However, although the use of metal materials to coat graphite can play a role in sealing graphite, the graphite packing ring will rotate relative to the pipeline in the actual working environment, and the relative friction between the pipeline and the external metal material will easily make the metal material Migration occurs, and the original structure of the metal material is destroyed, thereby reducing the sealing protection of the metal material to the internal graphite

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