Buried polyurethane insulation steel pipe performance and maintenance of the whole analysis

Number of visits：3 seconds Update time：2025-01-11

First, buried polyurethane insulation steel pipe weathering performance of the key factors

(A) the decisive role of the material

Polyurethane material itself has excellent weather resistance, can easily resist the external sun, rain and sand attack, to ensure that the insulation effect is durable and stable. Buried polyurethane heat preservation steel pipe is composed of internal and external two layers of steel pipe with thermal insulation materials, the outer layer is also covered with a special weather-resistant layer, this layer of special protection as a strong armor, giving the pipe a strong antioxidant and corrosion resistance, so that it can stand proudly in the harsh climatic conditions, safe and sound.

(B) the test of the use of the environment

Underground pipeline in a complex and changing environment, wet soil, huge external pressure and a variety of corrosive substances surrounded by the pipeline's weather resistance has put forward harsh requirements. In the selection of buried polyurethane heat preservation steel pipe, must take into account the complexity of geological conditions, the acidity and alkalinity of water and temperature fluctuations and many other factors, accurate matching, in order to ensure that the pipe's weathering performance is sufficient to cope with the actual working conditions, to ensure its long-term stable operation, and is not easily crushed by the harsh environment.

Second, buried polyurethane insulation steel pipe anticorrosion treatment of strict standards

(A) anticorrosion materials are carefully selected

Anti-corrosion material is the pipeline against corrosion of the front line of defense, must have excellent chemical corrosion resistance, able to resist a variety of acids, alkalis, salts and other chemical substances erosion; but also have excellent anti-microbial erosion, to prevent microorganisms in the soil on the pipeline to gnaw; abrasion resistance is also indispensable in order to resist the friction of soil particles. In the selection of anti-corrosion materials, need to be based on the specific operating environment of the underground pipeline, such as the chemical composition of the geology, the size of the pressure, etc., to carry out an all-round, multi-dimensional comprehensive consideration, accurate selection of materials, in order to build a firm foundation of corrosion protection.

(B) Long-term guarding of cathodic protection

Cathodic protection is a powerful means of anti-corrosion of buried polyurethane heat preservation steel pipe, through the clever application of external current, so that the surface of the metal pipeline electronegativity, so as to effectively inhibit the electrochemical corrosion reaction of the metal. The cathodic line is carefully arranged around the pipeline, which skillfully makes the potential difference between the metal pipeline and the earth, and puts on a layer of invisible protective clothing for the pipeline with the help of electrochemical principle. The cathodic protection system needs to have high stability, long-term stable operation in the underground complex environment, and maintenance should be convenient and efficient, to ensure that its protective effect is always on-line, for the pipeline safety escort.

(C) soil pollution prevention and protection

Buried polyurethane heat preservation steel pipe buried in the ground, contact with the soil is unavoidable, but must strictly guard against soil pollution. With the help of non-excavation technology, skillfully avoid direct contact with the soil, while using high-quality backfill sealing material, the pipeline and the soil is closely isolated. In addition, it is also necessary to regularly monitor the soil around the pipeline, once the soil quality is found to be different, take immediate measures to ensure that the soil environment meets the relevant environmental standards, to guard the soil ecological safety.

(D) strengthening the implementation of maintenance management

The safe operation of buried polyurethane insulation steel pipe is inseparable from the regular maintenance management. To establish a perfect inspection mechanism, regularly on the pipeline for a comprehensive “physical examination”, once found that the anti-corrosion layer is damaged, the pipeline has signs of leakage and other anomalies, the first time accurate repair or timely replacement of damaged parts, the corrosive medium out of the door, to prevent it from taking advantage of the weakness, erosion of the pipeline, to ensure that the pipeline is always in a healthy state, and to prolong its service life. Extend its service life.

Third, buried polyurethane insulation steel pipe frost strength

(A) excellent anti-freezing performance

Buried polyurethane heat preservation steel pipe filled with high-density polyurethane foam, like a thick layer of warm cotton, greatly weakening the external cold weather on the pipeline invasion. Even in the harsh environment of extreme low temperatures, it can also rely on excellent thermal insulation performance, firmly locked inside the pipeline heat, maintain temperature stability, effectively avoiding the internal icing of the pipeline as well as freeze cracks caused by all kinds of hidden dangers, to ensure that the normal operation of the heating or water transmission system, fear of the cold test.

(B) Double advantages of cold and abrasion resistance

The polyurethane material, which has been carefully processed by special technology, not only has excellent anti-freezing performance, but also has good impact resistance and wear resistance. In cold weather, the pipe will not be easily deformed or damaged, whether it is to withstand the occasional impact of external heavy objects, or long-term friction of soil particles, can remain firm, and consistently play its conveying function, to protect the smooth progress of all kinds of projects, without having to worry about frequent maintenance or replacement due to material problems.

Four, buried polyurethane insulation steel pipe outstanding features

(A) extraordinary thermal insulation performance

Polyurethane foam by virtue of its unique microstructure, has excellent thermal insulation properties, can efficiently block the transfer of heat, significantly reduce the loss of energy in the transmission process, for energy saving and emission reduction cause contributes to the important force, so that the heating or cooling system is more efficient, economic, for the user to save a lot of energy costs.

(B) High strength and compressive properties at the same time

Polyurethane insulation straight seam steel pipe in the production process after strict quality control and process optimization, so that it has a high strength and excellent compressive properties. Whether in the face of large working pressure, or drastic changes in temperature, can be as stable as Mount Taishan, still, to ensure that the pipeline in a variety of complex working conditions can be safe and reliable operation, for the safety and stability of the project to provide a solid guarantee.

(C) Excellent sealing performance

The sealing performance of polyurethane foam is excellent, and it can fill the tiny gaps between pipes and pipes, pipes and fittings tightly, effectively preventing the leakage of water, gas and other media. This feature is essential to ensure the normal operation of heating, water supply and other systems, avoiding energy waste, environmental pollution and safety hazards caused by leakage, and making the whole transportation system run more stable and efficient.

(D) excellent environmental performance

Buried polyurethane heat preservation steel pipe in the production process will uphold the green concept, the entire production process does not involve heavy metal smelting, petrochemical and other highly polluting industries, from the source to eliminate the production of hazardous substances, friendly to the environment without pollution. In the use of the process, will not release any harmful gases or substances, the real realization of the whole process from production to use of environmental protection, in line with the current trend of green development for ecological and environmental protection, add bricks and mortar.

Five, buried polyurethane insulation steel pipe environmental advantages highlighted

(A) the production link of green harmless

With the traditional pipeline material production process may produce a large number of pollutants, buried polyurethane heat preservation steel pipe production throughout the clean and environmentally friendly. It does not produce any harmful substances, will not cause any pollution to the surrounding environment, for the stability of the surrounding ecosystem and the harmonious development of the external conditions to create a good, is a real green building materials, leading the construction industry's new environmental protection trend.

(B) Recyclable resource circulation

Polyurethane foam material has good recycling performance, when the buried polyurethane heat preservation steel pipe to complete its mission, become waste materials, not a discarded, but can be recycled. Through scientific and reasonable recycling treatment process, it will be re-processed into usable raw materials, and put into the production link again, realize the recycling of resources, greatly reduce the waste of resources, improve the utilization rate of resources, and inject a strong impetus for sustainable development.

(C) the significant contribution of energy saving effect

With excellent heat preservation performance, buried polyurethane heat preservation steel pipe shines in the field of heating, cooling and other energy transportation. It can effectively reduce the loss of energy in the transmission process, improve the efficiency of energy utilization, and then realize significant energy saving effect. This not only saves a lot of energy costs for users, but also reduces greenhouse gas emissions such as carbon dioxide brought about by energy consumption, providing strong support for realizing the goal of green building and responding to the challenges of global climate change, and it is one of the key materials to promote energy conservation, emission reduction and green transformation in the construction industry.