A self-repairing flange gasket for pipeline connection

Abstract

The invention discloses a self-repairing flange gasket for pipeline connection, which belongs to the technical field of seals. It is a self-repairing flange gasket for pipeline connection, which can realize rapid repair when gaps appear in the early stage of flange gasket failure. Respond and trigger self-healing actions, using the characteristics of moisture perception, on the one hand, the rapid appearance prompts the technicians in time, on the other hand, using the pre-set repair layer, based on the characteristics of gas expansion, it actively expands to fill the gaps, and then uses self-heating materials The hot-melt adhesive is melted and guided, and a continuous adhesive ring is formed to cooperate with the repair layer for repair, and it has a certain strength to resist water erosion, avoid the failure or detachment of the adhesive ring, and effectively repair the gap. Anti-seepage, reduce the risk of large-scale leakage caused by further failure of flange gaskets, and gain valuable time for technicians to repair, thereby reducing the high loss caused by pipeline leakage.

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

Images