Plastic pipe capable of being protected against high-temperature deformation

Abstract

The invention discloses a plastic pipe capable of being protected against high-temperature deformation. The plastic pipe comprises an inner pipe and an outer layer, wherein the outer layer and the inner pipe are connected through a skeleton; and a gap is formed between the outer layer and the inner pipe. The plastic pipe capable of being protected against high-temperature deformation has the beneficial effects that the outer layer and the inner pipe are connected through the skeleton, so that a relatively great supporting force can be provided by the skeleton structure for the inner pipe whenthe inner pipe is confronted with the action of gravity; the skeleton is prevented from being in direct contact with a high-temperature medium is avoided, so that the relatively high hardness of the skeleton can always be kept for supporting, and the inner pipe can be protected against deformation caused by the action of gravity when heated and softened; and meanwhile, the inner pipe is completelycoated with the outer layer, so that the accelerated aging of the inner pipe can be prevented even if the plastic pipe is mounted under outdoor sun exposure conditions, and then the service life canbe prolonged.

Description

technical field [0001] The invention relates to the technical field of plastic pipes, in particular to a plastic pipe that prevents high-temperature deformation. Background technique [0002] PPR plastic pipe, that is, random copolymerized polypropylene pipe, the cross-sectional view of its port is as follows figure 1 As shown, when transporting high-temperature liquid for a long time or installing in an outdoor high-temperature environment, due to the softening of the pipe, its local unsupported section will fall under the influence of gravity, causing the pipe to undergo horizontal deformation, and the overall horizontal position of the pipe presents S At the same time, due to the S-shaped deformation of the pipe, the tensile stress of the welded parts at both ends is greatly increased when the overall length of the space remains unchanged, and it is easy to cause stress at the welded end when the pipe is alternately cold and hot. cracking. [0003] At present, in view o...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a plastic pipe that prevents high temperature deformation in order to solve the existing problems that the existing plastic pipes are easily deformed when heated and softened.

Images