Prefabricated buried insulation pipe
details
Prefabricated directly buried thermal insulation steel pipe is a good performance, plus safe, reliable, low cost of direct buried prefabricated insulation pipe. Effective solution to the city central heating in the 130 ℃ -600 ℃ high temperature heat transfer with prefabricated buried insulation pipe insulation, sliding lubrication and bare water-side problem. Prefabricated directly buried thermal insulation pipe with direct burial heating technology, marking the technical development of China's heating pipe has entered a new starting point.
The Composition of Prefabricated Direct - Buried Insulated Steel
The prefabricated direct-buried thermal insulation steel pipe is composed of a steel pipe, a fiberglass inner sheath and a fiberglass reinforced plastic shell, and is characterized by further comprising a high-temperature heat-insulating layer, a lubricating layer and an elastic seal.
1, the work of steel: According to the technical requirements of the transmission medium were used seam steel pipe, seamless steel pipe, double submerged arc spiral welded steel pipe.
2, insulation layer: the use of rigid polyurethane foam.
3, protective shell: the use of high-density polyethylene or glass fiber reinforced plastic.
4, the leakage alarm line: the manufacture of high-temperature prefabricated pipe insulation, the insulation layer near the pipe, buried alarm line, once a leak somewhere in the pipeline, through the alarm line conduction, can be dedicated detection instruments Alarm and show the exact location of leakage and the extent of leakage in order to inform the maintenance staff to quickly handle the leakage of the pipe to ensure safe operation of the heating network.
Advantages of prefabricated direct - buried thermal insulation steel
1, small footprint, fast construction, enabling environmental protection.
Prefabricated directly buried steel pipe insulation does not need to build a huge, just buried underground pipe insulation, thus greatly reducing the project area, reduce earth excavation of about 50% or more, to reduce the civil masonry and concrete 90%. At the same time, the insulation pipe processing and on-site trenching parallel, just on-site joints, can shorten the duration of about 50% or more.
2, anti-corrosion, insulation performance, long service life.
Prefabricated direct buried steel pipe insulation pipe insulation, isolated from the infiltration of air and water, can play a good anti-corrosion effect. While its foam holes are closed, water absorption is very small. High-density polyethylene shell, glass fiber reinforced plastic shell has good corrosion resistance, insulation and mechanical properties. Therefore, the working steel skin is difficult to be outside the erosion of air and water. As long as the pipeline internal water quality, according to foreign information, high temperature prefabricated buried insulation pipe service life of up to 50 years, than the traditional trench laying, overhead laying life 3 to 4 times higher.
3, reduce the project cost.
According to the calculation of the relevant departments, dual-pipe heating pipe, under normal circumstances can reduce the project cost of 25% (using glass fiber reinforced protective layer) and 10% (using high-density polyethylene to do the protective layer).
4, high safety performance.
In addition to China's production of prefabricated directly buried pipe insulation, are equipped with leakage alarm line, once a leak somewhere in the pipeline, through the alarm line conduction, can be displayed on a dedicated instrumentation insulation pipe seepage, leakage of the exact location And the degree of leakage in order to inform the seepage personnel to quickly handle the leakage of the pipe, to ensure the safe operation of heating pipe network.
In general, the prefabricated buried steel pipe not only has the traditional trench and overhead piping difficult to match the advanced technology and practical performance, but also has significant social and economic benefits, but also an effective measure for energy-saving heating. Directly buried heating pipe technology, marking the technical development of China's heating pipe has entered a new starting point. With the further improvement of the advanced technology and development of heating pipes buried directly replace the trench and overhead is imperative.
Prefabricated Direct Buried Insulated Steel Pipe Widely Used
Prefabricated buried insulation pipe is widely used in liquid, gas pipeline network, chemical pipeline insulation engineering petroleum, chemical industry, central heating network, central air conditioning ducts, municipal engineering.
