Self-repair flange gasket for pipeline connection

Abstract

The invention discloses a self-repair flange gasket for pipeline connection, and belongs to the technical field of sealing elements. The self-repair flange gasket for pipeline connection can make a rapid response and trigger a self-repair action when a crack appears at the initial failure stage of the flange gasket. On the one hand, rapid development is performed to remind a technician in time byutilizing the characteristics of sensing moisture. On the other hand, the crack is actively filled based on the characteristics of gas expansion by using a prearranged repair layer, then, melting guidance is performed on a hot-melt adhesive by using a spontaneous heating material, a continuous adhesion ring is formed to cooperate with the repair layer for repair, and certain strength is achieved to resist the erosion of water to avoid the failure or separation of the adhesion ring. Effective seepage prevention is achieved for the crack, the risk of large-scale leakage caused by further failureof the flange gasket is reduced, precious time is gained for the technician to perform maintenance, and thus high losses caused by pipeline leakage are reduced.

Description

technical field [0001] The invention relates to the technical field of seals, in particular to a self-repairing flange gasket for pipeline connection. Background technique [0002] Flange gaskets are used in pipeline flange connections. They are seals between two flanges. The medium, pressure and temperature directly affect the selection of flange gaskets. In pipeline connections, especially large pipelines, flanges are usually used. The connection has the advantages of convenient installation, good sealing and easy maintenance, but under long-term use, the phenomenon of flange gasket failure often occurs [0003] At this stage, the failure of flange gaskets is mainly due to the following factors: [0004] 1. The uneven distribution of compression force will cause the flange gasket gap, resulting in the leakage of pipeline medium; [0005] 2. Stress relaxation and torque loss, stress relaxation and torque loss are also the main causes of leakage; [0006] 3. The surface r...

AI Technical Summary

Problems solved by technology

[0004] 1. The uneven distribution of compression force will cause the flange gasket gap, resulting in the leakage of pipeline medium;

[0005] 2. Stress relaxation and torque loss, stress relaxation and torque loss are also the main causes of leakage;

[0007] Fourth, temperature changes and cooling also have a great impact on the sealing effect

[0008] In most cases, the failure of flange gaskets is a gradual failure process, but it is difficult to know in the early stage of failure in the existing technology, and it is often only noticed after a certain scale of medium leakage occurs. too late to cause some damage

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