Self-compensation high-temp resistance prefabricated direct-buried heat insulation pipe

Abstract

The invention comprises a core tube, an insulating layer and an outer protecting jacket. There is the insulating layer outside the core and the outer protecting jacket outside the insulating layer. There are more than one hard thermal insulation supporting rings between the core tube and the outer protecting jacket. Because of having the expansion self-compensating effect when used at high temp., the structure of the invention can't be destroyed, so as to make it have a good thermal insulation effect.

Description

1. Technical field: [0001] The invention relates to a heat preservation pipe capable of being buried underground, which is a self-compensating high temperature resistant prefabricated direct buried heat preservation pipe. 2. Background technology: [0002] Existing insulation pipes that can be buried underground generally have insulation pipes with the following structures, namely: insulation pipes with rigid insulation tile structure, insulation pipes with polyurethane rigid foam insulation material structure, and rigid insulation materials combined with polyurethane foam Insulation pipes of the structure and insulation pipes of the steel jacket steel insulation structure are as follows: [0003] 1. Insulation pipe with rigid insulation tile structure. It uses perlite tiles to wrap medium steel pipes, and uses perlite tiles as the main body of heat preservation. Since the perlite tile is a hard thermal insulation material, it can be used for pressure-resistant direct-buri...

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a self-compensating high-temperature resistant prefabricated direct-buried heat preservation pipe, which overcomes the deficiencies of the prior art and solves the problem

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