Production technology for producing prefabricated plastic thermal insulation pipeline through one-step method

Abstract

The invention discloses a production technology for producing a prefabricated plastic thermal insulation pipeline through a one-step method. The production technology comprises the steps of 1) extrusion molding of a working inner pipe: continuously molding the working inner pipe of the plastic thermal insulation pipeline through utilizing an extrusion device; 2) shaping and cooling of the working inner pipe: shaping and cooling the working inner tube through utilizing a shaping and cooling device; 3) continuous wrapping of thermal insulation layer on the working inner tube: continuously wrapping the working inner tube with the thermal insulation layer through utilizing a continuous foaming molding device; and 4) continuous gluing of an outer protective layer on the thermal insulation layer: continuously gluing an outer protective layer on the thermal insulation layer through utilizing an outer coating device. According to the production technology for producing the prefabricated plastic thermal insulation pipeline through the one-step method, the defect that an existing thermal insulation pipeline can only be produced section by section is overcome, and the continuous production of the plastic thermal insulation pipeline can be achieved.

Description

technical field [0001] The invention relates to a pipeline production process, in particular to a production process for producing prefabricated plastic insulation pipelines in one step. Background technique [0002] Traditional heat pipes are generally composed of steel working inner pipes, anti-corrosion layers, insulation layers and protective layers. A bracket is installed between the steel pipe straight pipe and the protective outer pipe to maintain the coaxial state between the steel pipe straight pipe and the protective outer pipe, and then the insulation layer is poured. Therefore, due to the structural characteristics of the existing thermal pipeline, only one section of straight pipe can be produced at a time, and it is connected by section-by-section electric welding at the time of production and installation. In recent years, some prefabricated heat pipe products, such as a plastic working pipe prefabricated direct-buried composite thermal insulation pipe disclo...

AI Technical Summary

Problems solved by technology

Although the existing thermal pipeline production methods can meet the production requirements of thermal pipelines to a certain extent, the continuous production of thermal pipelines cannot be realized, and they need to be installed section by section during construction and installation, which not only leads to low production efficiency, but also leads to poor construction and installation efficiency. It is also low, and the many connection points between the various sections of the thermal pipeline have caused potential safety hazards in the system

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