A self-healing corrugated pipe

Abstract

The invention discloses a self-repairing corrugated pipe, which belongs to the field of corrugated pipes. A self-repairing corrugated pipe includes a corrugated pipe body. The outer surface of the corrugated pipe body is provided with a raised ring. The bellows The left end of the pipe body is fixedly installed with a first connecting end, and the right end of the corrugated pipe body is fixedly installed with a second connecting end. The automatic repair of corrugated pipes is that the inner layer melts and cools the thermoplastic resin by heating, thereby bonding and repairing the inner layer, the middle layer releases the glue inside the water-soluble film to achieve self-adhesive effect, and the outer layer overflows the glue coating, To achieve the repair of the outer layer, and through the thermal expansion of the expansion material, the local compression damage of the bellows is realized.

Description

technical field [0001] The invention relates to the field of corrugated pipes, more specifically, to a self-repairing corrugated pipe. Background technique [0002] Bellows refers to a tubular elastic sensitive element connected by foldable corrugated sheets along the direction of folding and stretching. Bellows are widely used in instruments and meters, and their main purpose is as a measuring element of a pressure measuring instrument to convert pressure into displacement or force. The bellows has a thinner wall and higher sensitivity, and the measurement range is tens of Pa to tens of MPa. Its open end is fixed, and the sealed end is in a free state, and the auxiliary coil spring or reed is used to increase the elasticity. When working, under the action of internal pressure, it is elongated along the length of the pipe, so that the movable end produces a displacement that has a certain relationship with the pressure. The movable end drives the pointer to directly indic...

AI Technical Summary

Problems solved by technology

[0003] During the use of the bellows, due to the particularity of the material of the pipe fittings, it is prone to rupture, and the ruptured bellows have different repair methods due to the different degrees of rupture, and the local longitudinal compression will produce depressions. , and these depressions are difficult to automatically reset, and need to be squeezed back and forth by hand. Such external force extrusion is extremely prone to breakage;

[0004] However, the existing corrugated pipes do not have a good repair function. After the pipe fittings are broken, they can be sealed and waterproof through the external winding tape, and the service life of the corrugated pipes treated in this way is greatly reduced, and it is extremely easy to cause secondary rupture

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