Thermal insulation pipe

Thermal insulation pipe (Heat preservation pipe) is after processing the Heat preservation technology, in different working conditions and medium to ensure work steel pipe under the action of outside temperature and surface temperature meet or meet the use requirements of steel pipe.

Thermal insulation pipeline is widely used in the transportation network of liquid and gas, the thermal insulation engineering of chemical pipeline petroleum, chemical engineering, central heating network, central air-conditioning ventilation pipeline, municipal engineering, etc.

Performance advantages

Compared with the traditional pipe insulation method, the precast pipe has very prominent advantages:

1, the prefabricated directly buried insulating pipe don't need to laying large cooking, just put the insulation pipe buried underground, thus greatly reduces the project covers an area of, is beneficial to environmental protection, reduce earthwork excavated volume of about 50%, 90% decrease civil masonry and concrete.At the same time, the construction of thermal insulation pipe and the field trenching are carried out in parallel, and the construction period can be shortened by more than 50% if only the field joints are needed.

2. Good thermal insulation performance. The heat loss is only 25% of the traditional pipe material. Long-term operation can save a lot of energy and significantly reduce the energy cost.

3. It has a strong waterproof and corrosion resistance capability, and it does not need a pipe trench. It can be directly buried into the ground or water. The construction is simple and quick, and the comprehensive cost is low.

4. It also has good corrosion and impact resistance at low temperature, and can be directly buried into the underground frozen soil.

5. The service life can reach 30-50 years, and the correct installation and use can make the maintenance cost of the pipe network extremely low.

6. An alarm system can be set up to automatically detect the leakage failure of the pipe network, accurately indicate the fault location and automatically alarm.

Mechanism of the structure

1. External protective steel pipe: protect the thermal insulation layer from groundwater erosion, support the working pipe and bear certain external load to ensure the normal operation of the working pipe.

2. Anti-corrosion layer: protect the outer steel pipe from corrosion and extend the service life of the steel pipe.

3. Drag reduction layer: ensure free movement of working steel pipe in thermal expansion and cold shrinkage.

4. Polyurethane foam layer: ensure the temperature of the medium, and keep the surface of the outer sheath at room temperature.

5. Barrier and reflector: ensure that organic foam materials do not enter inorganic hard and high temperature resistant layer;Reflect some heat in the high temperature resistant layer.

6. Working steel pipe: ensure the normal flow of conveying medium.

7. Inorganic rigid insulation layer: high temperature resistance, interface temperature between the layer and the organic insulation layer is ensured, and foam is not carbonized.