Year1
- 规格型号：
- 齐全
: >> Steel-in-steel insulated pipes
: >> One is composed of a steel pipe for transporting media, an anti-corrosion jacketed steel pipe, and ultra-fine glass wool filled between the steel pipe and the jacketed steel pipe. It can also be composited with graphite, calcium silicate tile shells and filled polyurethane foam. Steel casing (steel casing steel) burial technology is a new waterproof, leak-proof, impermeable, pressure-resistant and fully enclosed burial technology. It is a major breakthrough in the use of direct burial laying technology in areas with high groundwater levels. The primary issue for the protection pipe of directly buried pipelines is the reliability of tight waterproofing. In addition, it must have good mechanical strength. Steel casings are welded due to their high strength, and the waterproof sealing performance is very reliable. In addition, its high temperature resistance is also It is unmatched by other external protection tubes. In areas with high groundwater levels, in order to ensure that groundwater does not affect the normal operation of directly buried steam pipelines, it is best to use a strong, airtight steel pipe shell as the outer protective layer.
: >>1. Insulation structure anti-corrosion layer + outer protective steel pipe + polyurethane foam layer + barrier and reflective layer + inorganic hard insulation layer + drag reduction layer + working steel pipe (the following steel pipes add centering rings to ensure that the inner and outer pipes Concentricity) 2. Structural mechanism
: >>. Anti-corrosion layer: protects the outer steel pipe to prevent corrosion of the steel pipe and prolongs the service life of the steel pipe.
: >>.Outer protection steel pipe: protects the insulation layer from groundwater erosion, supports the working pipe and can withstand certain external loads, ensuring the normal operation of the working pipe.
: >>.Polyurethane foam layer: ensures the temperature of the medium and ensures that the surface of the outer protective tube remains at normal temperature.
: >>. Barrier and reflective layer: Ensure that organic foam materials do not enter the inorganic hard high-temperature-resistant layer and reflect part of the heat from the high-temperature-resistant layer.
: >>. Inorganic hard insulation layer: resistant to high temperatures, ensuring the interface temperature with the organic insulation layer and ensuring that the foam is not carbonized.
: >>.Drag reduction layer: ensures the free movement of the working steel pipe due to thermal expansion and contraction.
: >>.Working steel pipe: ensure the normal flow of the conveying medium. Prefabricated directly buried insulated pipes, polyurethane insulated pipes, high-density polyethylene insulated pipes, high-density polyethylene prefabricated directly buried insulated pipes, jacketed high-density polyethylene insulated pipes, plastic-sheathed steel insulation, steel-sheathed steel direct-buried insulation, high-temperature steam direct Buried insulation, internal and external anti-corrosion insulation of steel pipes and fittings, single-layer and double-layer sintered epoxy powder anti-corrosion (B), double-layer polyethylene and three-layer polyethylene anti-corrosion, double-layer polypropylene anti-corrosion and three-layer polypropylene external coating projects, The company produces products such as Ersan Pipe Insulation, and also acts as an agent for seamless steel pipes and spiral pipes from major steel plants.
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Steel-sheathed direct-buried thermal insulation pipe
: >> The thermal insulation material is high-quality ultra-fine glass wool tube shell. The ultra-fine glass wool tube shell has the advantages of double-layer staggered seam wrapping, few seams, and good air permeability. Once the insulation layer gets water during construction, it can be pumped out, dehumidified, and dried gradually by gradually increasing the steam temperature. The shape and thermal insulation properties are maintained well after drying.
The design of the rolling support structure is reasonable, the rolling friction is small, the force on the fixed support is reduced, the mechanical analysis principle is simple, and the stability and safety of the pipeline are greatly improved.
The vacuum layer completely eliminates heat conduction and heat convection in the air layer, greatly reducing heat loss. Compared with the air layer structure, the outer wall temperature can be reduced by ℃ under the same insulation thickness.
The vacuuming device completely solves the problem that the inner wall of the outer steel casing is easily corroded by hot and humid air, and greatly improves the operating life of the directly buried steam pipeline. Product life is extended to years.
The vacuum device completely solves the problem that a pair of moisture drainage pipes must be installed at every interval in the air layer structure, which greatly reduces the damage rate of the outer casing and makes the pipeline more beautiful. At the same time, the additional cost due to the installation of moisture drainage pipes is reduced by approximately //.
The steel outer casing generally does not use lap welding of two and a half tiles, but is repaired on site by sliding the steel outer casing and splicing it one by one, which is different from the conventional repairing method. The number of welds at the outer casing mouth can be reduced. The reduction in the number of welds not only shortens the installation period and reduces the possibility of leakage, but also saves a lot of costs for welding, ultrasonic and radiographic inspection
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