Composition and Structure of Steel-Sheathed Direct-Buried Thermal Insulation Pipes
Release time:
2020-12-30
The working mechanism of steel-sheathed directly buried thermal insulation pipes is primarily determined by their structural design and can be broadly categorized as follows: The outer protective steel pipe, on the one hand, safeguards the insulation layer from erosion by groundwater, ensuring its normal functionality. On the other hand, it provides support for the working pipe, taking on some of the external loads that the working pipe would otherwise bear, thereby guaranteeing the smooth operation of the working pipe.
Today, I’d like to introduce something to everyone. Steel-sheathed The compositional structure of directly buried insulated pipes—hopefully, this will be helpful to everyone. Let’s take a look at it together below.
The working mechanism of steel-sheathed directly buried thermal insulation pipes is primarily determined by their structure and can be broadly categorized as follows: The outer protective steel pipe, on the one hand, safeguards the insulation layer from erosion by groundwater, ensuring its normal performance. On the other hand, it provides support for the working pipe, taking on some external loads that would otherwise be borne by the working pipe itself, thereby guaranteeing the proper operation of the working pipe.
The anti-corrosion layer, made of anti-corrosion materials, isolates the steel pipe from corrosive substances, protecting it from corrosion and extending its service life. The friction-reducing layer ensures that the working steel pipe can move freely during transportation without being affected by temperature changes in the transported materials—allowing it to expand and contract thermally without constraint. The polyurethane foam layer provides highly efficient thermal insulation, maintaining the temperature of the medium while keeping the outer protective pipe surface at a constant ambient temperature.
An isolation and reflective layer prevents organic foam materials from penetrating the inorganic, rigid, high-temperature-resistant layer; it also reflects a portion of the heat from the high-temperature layer, ensuring that the working steel pipe provides the necessary foundation for the normal flow of the conveyed medium.
The inorganic rigid insulation layer is highly resistant to high temperatures and boasts excellent thermal insulation performance. It keeps the interface temperature between organic insulation layers within a specified range, ensuring that the external foam does not undergo high-temperature carbonization. A common method for insulating with rigid foam plastics involves using rigid polyvinyl chloride pipes as the protective layer—known as the rigid plastic protective layer.
The above is the complete information about the composition and structure of steel-sheathed directly buried thermal insulation pipes. We hope this has been helpful to everyone.
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