Year1
- 规格：
- 齐全
Insulation structure
The insulation structure of steel-sheathed steel insulation pipes is divided into: internal sliding type and external sliding type
Inner sliding type: the insulation structure is composed of working steel pipe, aluminum silicate, It is composed of drag reduction layer, microporous calcium silicate, heat insulation layer, stainless steel fastening steel strip, aluminum foil reflective layer, polyurethane insulation layer, outer steel pipe, and external anti-corrosion layer.
, External sliding type: The insulation structure is composed of working steel pipe, glass wool thermal insulation layer, aluminum foil reflective layer, stainless steel fastening belt, sliding guide bracket, air insulation layer, outer protective steel pipe, and outer anti-corrosion layer.
Structural Mechanism
Anti-corrosion layer: protects the outer steel pipe to prevent corrosives from corroding the steel pipe and prolongs the service life of the steel pipe.
.The outer protective 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.
.The polyurethane foam layer ensures the medium temperature and ensures that the surface of the outer protective tube remains at normal temperature.
.The barrier and reflective layer ensure that the organic foam material does 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.
.The drag reduction layer ensures that the working steel pipe can move freely when it expands due to thermal expansion or contraction.
.Working steel pipe: ensure the normal flow of the conveying medium.
The steel-sheathed steel insulation pipe is divided into three layers from the inside to the outside
The first layer: working steel pipe layer
According to the design and customer requirements, seamless pipes (B) spiral welded pipes () are generally used and straight seam welded pipe (B). After the surface of the steel pipe has been treated with advanced shot blasting and rust removal technology, the rust removal grade of the steel pipe can reach the level in the B standard, and the surface roughness can reach R=.micron in the B. standard.
Second layer: Polyurethane insulation layer
It is made by injecting rigid polyurethane foam solution into the cavity formed between the steel pipe and the outer sheath at one time using a high-pressure foaming machine. It is commonly known as the tube-in-tube foaming process. Its function is firstly to waterproof, secondly to keep heat, and thirdly to support the weight of the heating network. When the temperature of the conveying medium is: ℃℃, use rigid polyurethane foam as the insulation layer.
The third layer: anti-corrosion steel pipe
Anti-corrosion and insulated steel pipe is a steel pipe with anti-corrosion properties and good thermal insulation properties. It has been widely used and promoted in building construction, and is constantly being improved. and popularity. Anti-corrosion and thermal insulation steel pipes have different processing types and methods. Different processing methods determine that the steel pipes have different properties and functions, and the scope of use will also change accordingly. &
The production of anti-corrosion and insulated steel pipes needs to be produced according to national standards. Different processing methods follow different standards, but they must comply with national production standards and must be strictly followed and implemented.
Formed steel steam insulation pipe.
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