Introduction of the production process of steam direct buried pipeline

Due to its good thermal insulation performance, the steam direct buried pipeline is used more and more, so the steam direct buried pipeline is widely used in urban construction projects, but many people do not know this new type of thermal insulation pipeline product. Let me introduce to you the production process of the steam direct buried pipeline. The steam direct buried pipeline is developed based on the structure of the polyurethane thermal insulation pipe. The general structure is similar, but the thermal insulation layer is slightly different:

1. Thermal insulation layer composite technology The thermal insulation layer can use a single thermal insulation material layer or a composite layer of multiple thermal insulation materials. The joints of the thermal insulation layer materials should be staggered, the inner and outer layers should be pressed against each other, and all the gaps should be densely caulked, Use stainless steel fastening steel strips to bundle the insulation material on the surface of the working pipe in sections. When the pipeline is heated and expanded during operation, the insulation layer material and the working pipe move together in the steel outer protective pipe through the support. According to the conditions of medium temperature, high temperature, and ultra-high temperature of the steam medium, high temperature resistant thermal insulation materials such as hydrophobic aluminum silicate needle punched blanket/fiber felt or silica aerogel nano thermal insulation blanket can be used as a layer of the thermal insulation layer to achieve High-temperature resistance requirements;
2. The sliding bearing heat insulation technology uses rolling/sliding guide bearings instead of traditional brackets, which is more conducive to the flexible expansion and contraction of the working steel pipe in the outer steel pipe. The thermal bridge problem of the pipeline is solved, the surface temperature of the outer protective layer at the sliding bearing is low, and the anti-corrosion layer of the pipeline will not be damaged, ensuring that the local pipeline will not be corroded and damaged;
3. The vacuum treatment technology draws the air layer in the traditional steel jacketed steel steam insulation pipeline into a vacuum layer, which can remove the moisture in the air layer and the moisture absorbed in the insulation layer, effectively preventing the corrosion of the inner and outer steel pipes, and reduce the pipeline heat loss and surface temperature, extending the service life of the pipeline.

It is precise because of the unique structure of the thermal insulation layer of the steam direct buried pipeline that its thermal insulation performance and temperature resistance have been greatly improved compared with ordinary thermal insulation pipelines. Can be used between ℃.