Compound insulation prefabricated overhead steam thermal insulation pipe and processing process thereof

Abstract

The invention discloses a compound insulation prefabricated overhead steam thermal insulation pipe, and relates to the field of heat distribution pipelines. The compound insulation prefabricated overhead steam thermal insulation pipe comprises a steam pipe. A shell sleeves the steam pipe. A glass wool layer, a supporting layer and a foam layer are arranged between the steam pipe and the shell. Theglass wool layer wraps the peripheral side of the steam pipe. The supporting layer is arranged between the foam layer and the glass wool layer. The foam layer is arranged between the supporting layerand the shell through filling. The problem of high construction cost in the prior art is solved; by means of the thermal insulation pipe, by increasing the ratio of glass wool in the thermal insulation pipe, the ratio of the foam layer is reduced, then the production cost of the thermal insulation pipe is reduced, and use, promotion and popularization are facilitated; and in addition, since the glass wool layer has better high-temperature-resistant performance than the foam layer, by arranging the glass wool layer near the peripheral side of the steam pipe, the use safety of the thermal insulation pipe can be effectively improved.

Description

technical field [0001] The invention relates to the field of thermal pipelines, more specifically, it relates to a composite thermal insulation prefabricated overhead steam thermal insulation pipe and its processing technology. Background technique [0002] Industrial steam transmission and distribution pipeline network (hereinafter referred to as heat network), as an integral part of cogeneration, plays an important role in energy saving and emission reduction. There are two laying methods for the heating network used as steam transmission and distribution: overhead and direct burial. About 90% of them are laid overhead. The heating network laid overhead faces the natural external influences of wind, rain and sun. Human activities such as vehicle scraping and collision, people trampling, etc. also have an impact on the heating network. The above-mentioned various external effects often make the thermal insulation shell of the heating network pipe deform, rupture and fall...

AI Technical Summary

Problems solved by technology

[0004] However, rigid polyurethane foam and microporous calcium silicate tiles are relatively expensive in conventional insulation materials.

Compared with the traditional heating network project, the factory prefabricated insulation method makes the construction cost of the heating network much higher

To a certain extent, it affects the promotion speed of prefabricated overhead thermal insulation steam pipes

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