Buried prefabricated polyurethane insulation

Prefabricated polyurethane insulation tubes with good mechanical properties and thermal insulation properties, under normal circumstances can be temperature 120 ℃, by modification or other insulating material combinations can be temperature 180 ℃. Prefabricated buried pipe insulation compared with conventional trench laying pipe, with good insulation properties, construction and installation of simple small footprint, low construction cost, short construction period, etc., particularly in energy efficiency, with the present situation, it is a Any pipe insulation is difficult to compare, as far as energy-saving technology service center in Tianjin test report: In the burial depth of about one meter of pipeline, every 100 meters to cool to 0.1 ℃, each 100 m long heat loss rate of 2.07 percent, The next kilometer pipe insulation in general, annual savings of 10.4 tons of standard coal province. Low-pressure polyethylene outer sheath of polyurethane insulation Buried pipes Overview HDPE outer sheath polyurethane buried pipe insulation buried pipe insulation energy conservation outlined by the steel pipe, coating , insulation, corrosion protection layer compression, if it is ultra-high temperature pipe insulation in the middle layer and the coating together with a cooling layer. These pipes have less heat loss compressive strength properties, good water corrosion performance. Life in general in the 40 - 50 years. Polyurethane foam has good mechanical properties and thermal insulation properties, usually can be temperature 120 ℃, by modification or other insulating material combinations can be temperature 180 ℃. Buried prefabricated insulation than conventional types of pipe insulation has a very prominent advantages: 1, good insulation properties, heat loss is only 25% of the traditional pipe, long run can save a lot of energy, significantly reduce energy costs. 2, highly waterproof and corrosion resistance, without attached trench can be directly buried in the ground or water, construction easily and quickly, and lower total cost. 3, at low temperatures also have good corrosion resistance and impact resistance, and can be directly buried underground permafrost. 4, the service life of up to 30 - 50 years, proper installation and use can make the pipe network maintenance costs low. Buried polyurethane wound FRP winding FRP pipe outer protective layer is made of glass fiber reinforced resin wound, with high mechanical strength and excellent corrosion resistance. I used the company introduced a high-pressure polyurethane foam sets of equipment for the production of polyurethane jacket insulation Trinity overall performance, strictly enforce the outer surface of the steel pipe shot blasting process and an outer protective tube surface corona treatment process, to further improve the adhesive properties of the insulation tube . Insulation material density 60kg / m3 to 80kg / m3 rigid polyurethane foam, fully fill up the gap between the pipe and the casing, and has a certain adhesive strength, the steel pipe, the outer sleeve and insulation among forming a solid overall. Pipe selection within two degrees inorganic zinc primer (temperature ≥400 ℃) anti-corrosion coatings, pipes port selection polyethylene film or three PE cold tapes sealed to prevent moisture before installation or construction entering into the water. Shanxi polyurethane prefabricated Buried pipe insulation, pipe insulation Buried multilayer insulation materials and complete specifications wrong seam dressing, effectively reducing the heat loss, while controlling the jacket surface measures to prevent the generation of cold bridges, so that the temperature of the outer coating of control is guaranteed. Multi-layer insulation material wrapped with aluminum reflective layer, effectively reducing the heat loss, so that the steam pipe is more economical and reasonable. Jacket pipe corrosion using corrosion protection coating and cathodic protection joint, making corrosion life can be greatly increased. Hydrophobic system in the form of a fully enclosed, flexible layout, reasonable structure, safe and reliable. Row tide steel casing pipe on both timely discharge moist gas, but also as a daily alarm signal tube running. Thermal compensation pipeline of high quality bellows compensation, and installed in the casing, made of buried form, without the provision of observation wells, construction convenient operation, short construction period. Low Buried prefabricated steam pipe insulation (sliding) within the structure of a sliding-type insulation, steel pipe 2, refractory inorganic zinc-rich paint 3, 4, inorganic porous calcium silicate insulation layer 5, aluminum foil reflective layer drag reduction temperature 6 polyurethane insulation layer 7, the outer pipe or tube outer jacket PE jacket 8, coats corrosion pipe holder to maintain concentricity between inner and outer pipe, between the pipe and calcium silicate insulation material is formed by high-temperature fiber mat layer drag reduction the sliding interface, the use of high strength steel casing, and good sealing performance, the successful solution of waterproof and leak difficult. Inner layer of insulation material on the porous calcium silicate wrong pipe joints, including dressing and gap filling high-temperature high elastic insulation materials, effectively reducing the heat loss. Outer insulation polyurethane insulation materials selection, use of polyurethane insulation excellent performance, control coat surface temperature is below 50 ℃, protection coating, increasing the overall life of the pipe. Pipe insulation in the fixed support to take measures to prevent the generation of cold bridges, so that the coating of temperature control (50 ℃ or less) guaranteed. Multi-layer insulation material wrapped in aluminum foil inner reflective layer, effectively reducing the heat loss, so that the steam pipe is more economical and reasonable. Category prefabricated insulating fittings elbow tee cross tee straight parallel links adjustable mounting bracket for the straight pipe bends turn, it can also be used to compensate for thermal expansion and contraction. Standard elbow angle: 30o, 60o, 90o, different elbow angles and lengths are available upon request, code: E- nominal diameter - angle steel jacket prefabricated steam pipe insulation. Compared with conventional polyurethane insulation trench laying pipe, with good insulation properties, construction and installation of simple small footprint, low construction cost, short construction period, etc., particularly in energy efficiency, with the present situation, any insulation Pipeline difficult to compare, as far as energy-saving technology service center in Tianjin test report: In the burial depth of about one meter of pipeline, every 100 meters to cool to 0.1 ℃, each 100 m long heat loss rate of 2.07%, in general, The next kilometer pipe insulation, the annual savings of 10.4 tons of standard coal province. "Pipe-in-pipe" two pipe insulation, polyurethane buried pipe insulation material compared with other insulation materials and insulation performance of rigid polyurethane foam plastic is a good performance of thermal insulation material, the cell was closed cell structure, closed cell of gas (Freon F11) Thermal conductivity (0.007W / mK) is extremely small, and therefore, heat insulation properties of polyurethane buried pipe insulation material is lower than almost all the other insulation materials, it is compared with other insulation materials, to achieve the same insulation , insulation thickness can be reduced 30-80%. High-density low-pressure polyethylene (HDPE) outer sheath polyurethane buried pipe insulation Overview HDPE outer sheath polyurethane buried pipe insulation energy-buried pipe insulation outlined by the steel pipe, coating, insulation, corrosion protection layer compression, if it is ultra-high temperature pipe insulation in the middle layer and the coating together with a cooling layer. These pipes have less heat loss compressive strength properties, good water corrosion performance. Life in general in the 40 - 50 years. Prefabricated polyurethane insulation [1] three-tier structure from inside to outside: First layer: Working pipe layer based on design and customer requirements are generally used seamless steel pipe, spiral pipe and straight pipe joints. Advanced steel surface after shot blasting process, steel rust rating up to GB8923-1988 standard Sa2 grade, surface roughness up GB6060.5-88 standard R = 12.5 m. Second layer: polyurethane insulation layer: high pressure foaming machine with a cavity between the pipe and the outer protective layer is formed in a one-time injection of liquid is made of rigid polyurethane foam, commonly known as "pipe-in-pipe foam." The third layer: high-density polyethylene protective layer: a certain thickness preformed black or yellow polyethylene plastic pipe. First, its role polyurethane insulation protection against mechanical hard object damage, and second, anti-corrosion, waterproof. Shanxi polyurethane prefabricated Buried pipe insulation, pipe insulation Buried complete specifications of the traditional types of pipe insulation has a very prominent advantages: 1, good insulation properties, heat loss is only 25% of the traditional pipe, long run can save a lot of energy significantly reduce energy costs. 2, highly waterproof and corrosion resistance, without attached trench can be directly buried in the ground or water, construction easily and quickly, and lower total cost 3, at low temperatures also have good corrosion resistance and impact resistance, It can be directly buried underground permafrost. 4, the service life of up to 30 - 50 years, proper installation and use can make the pipe network maintenance costs low. 5, you can set the alarm system, automatic detection of pipeline leakage fault, accurate fault location and automatic alarm indication. Overview prefabricated polyurethane insulation of prefabricated polyurethane insulation is widely used in liquid, gas pipeline network, chemical pipe insulation works in petroleum, chemical, central heating network, central air conditioning and ventilation pipes, municipal engineering. Buried pipe insulation is a good insulation properties, plus safe, reliable, low construction cost of prefabricated buried pipe insulation. Effective solution to the urban central heating in 130 ℃ -600 ℃ high temperature heat transport prefabricated buried pipe insulation insulation, sliding lubrication and waterproofing exposed pipe ends. Buried pipe insulation only traditional trench and overhead laying pipeline incomparable advanced technology, practical performance, but also has significant social and economic benefits, but also effective measures heat energy. Prefabricated buried pipe insulation technology using buried heating pipe, heating pipe technology development indicates that China has entered a new starting point. Prefabricated polyurethane insulation composed of prefabricated polyurethane insulation is composed of steel, fiberglass inner sheath fiberglass shell, which is characterized by: further comprising a heat insulation layer, lubricating layer, elastomeric seals. The utility model effectively solves the urban central heating in 130 ℃ -600 ℃ high temperature heat transport prefabricated buried pipe insulation insulation, sliding lubrication and waterproofing exposed pipe ends.