Buried composite insulation

Polyurethane insulation is a high functionality polyether polyol combination of materials and multiple methyl polyphenyl isocyanate material foaming chemical reaction. Polyurethane insulation for thermal indoor and outdoor pipes, central heating pipes, central air conditioning ducts, chemical, pharmaceutical and other industrial pipes, cold project. Because polyurethane foam pipe insulation tightly bonded polyurethane rigid foam insulation in the steel skin, cut off from air and water infiltration, can play a good anti-corrosion effect. While its foaming holes are closed, water absorption is small. High density polyethylene shell, fiberglass shell have good anti-corrosion, insulation and mechanical properties 1, high fire resistance polyurethane foam insulation tubes are inorganic materials, is a Class A fire protection materials, which has a good fire resistance, refractoriness reach 1000 ℃ above, to fully meet the requirements of external insulation board fire. 2, high thermal insulation closed cell polyurethane foam insulation rate of> 95%, high closed cell rate of the heat transfer due to low air flow, it is a prerequisite for high insulation. So the production of external wall insulation board thermal coefficient 0.045-0.068W / mk, slightly lower than the thermal conductivity of polystyrene board, but in practical effect in roughly equal, to meet building insulation needs. 3, relative strength, and not broken polyurethane foam insulation tubes are high compressive and flexural strength, reached a relatively uniform density high strength, use and transport are difficult to break, and comply with fire integrity. 4, light quality light adhesive strength is another advantage of our products. Density 120-320kg / m3, to achieve the requirements of the external wall insulation board, low cost. Compatibility of materials is good, strong bond with the wall. 5, polyurethane foam pipe insulation safety. Transmission and distribution for central heating, cooling and hot oil pipe insulation pipe and outer protective pipe, both with polyurethane foam insulation tightly integrated into one. Diameter range is Φ90 ~ Φ1240, pipe insulation full name of high density polyethylene foam polyurethane rigid foam pipe insulation, its role is to protect the working temperature of the fluid inside the tube to prevent heat transfer with the outside world, leading to loss of fluid temperature. GB prefabricated buried pipe insulation composite price = today offer polyurethane 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. In the piping system, the elbow is to change the direction of the pipe fittings. Angularly points, and the three most commonly used, according to project needs in addition also includes other non-normal angle elbow. Elbow materials are cast iron, stainless steel, alloy steel, malleable iron, steel, nonferrous metals and plastics. And the pipe coupling methods are: direct welding most common way flanged, hot melt connection, fused connection, thread coupling and socket type coupling and the like. According to the production process can be divided into: welding elbow, pressing elbow, casting elbow. Other names: degree elbow, right angle bend, bend and so love. (1) Polyurethane pipe insulation pipe work: according to the technical requirements of the transmission medium were used pipe joints, seamless, double-sided spiral submerged arc welded steel pipe. (2) polyurethane insulation pipe insulation layer: rigid polyurethane foam. (3) pipe insulation polyurethane protective shell: high density polyethylene or fiberglass. (4) polyurethane insulation pipe leakage alarm line: the manufacture of high temperature prefabricated buried pipe insulation, the insulation layer near the pipe, buried an alarm line, once the pipeline leakage occurs somewhere through the alarm line of conduction, can in dedicated instrumentation alarm on and show the exact location and extent of the size of the leak leaking to notify the maintenance personnel to quickly deal with a leaky pipe, to ensure the safe operation of heating network. Polyurethane insulation tubes known as "pipe-in-pipe" that they have "two-step" structure, is made of high density polyethylene outer protective layer of polyurethane rigid foam plastic pipe and pipe components. 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. Buried polyurethane foam insulation tubes with good mechanical properties and thermal insulation properties, generally the case may be modified by temperature or other insulating material combinations can be temperature 120 ℃ 180 ℃. 1. coating: protective outer steel to avoid corrosion corrosion steel pipe, pipe prolong life. 2. The outer jacket pipe: groundwater protection insulation from erosion, supporting the work of the tube and can withstand external loads, to ensure normal operation of the working tube. 3. The polyurethane foam layer: to ensure that the medium temperature to ensure that the outer surface of the protective tube maintained at room temperature. The barrier, reflective layer: to ensure that organic foam material does not enter the hard inorganic refractory layer; a reflective layer portion of high temperature heat. 5. inorganic rigid insulation: high temperature, to ensure the interface between temperature and the organic insulating layer, to ensure not to be carbonized foam. 6. drag layer: to ensure the free movement of expansion and contraction pipe work. 7. Working pipe: to ensure the normal flow of the transmission medium. GB prefabricated buried pipe insulation composite price = today offer polyurethane insulation is a good insulation properties, plus safe, reliable, low construction cost of prefabricated buried pipe insulation. 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. With the growing world energy demand and dwindling, energy saving, emission reduction, environmental protection has become the trend of global development, state and local governments to vigorously promote energy conservation, emission reduction, the development of environmentally friendly products, applications and industry, construction industry Polyurethane Rigid Foam insulation materials is an important branch of the polyurethane industry, which is characterized by a multi-purpose timber, along with insulation, water and other functions. These products since the 1960s in Europe since the construction industry applications for more than 40 years, some countries have adopted legislation to polyurethane as insulation waterproof construction specified timber. In recent years, with the rapid development of China's building energy efficiency market, the polyurethane foam insulation products in building insulation body waterproofing has been widely used, has become one of the thermal insulation products dominate the market. Waterproof materials as building insulation, polyurethane foam breaking the traditional function of a single building materials - not waterproof insulation, thermal insulation is not waterproof, waterproof layer insulation leakage occurs once a common problem immediately lose insulation function. Compared with other single-function insulation or waterproofing material, polyurethane foam has obvious advantages: 1. Polyurethane foam material having a multi-function, along with insulation, water, noise, vibration absorption and many other features. 2. Insulation performance, is all the domestic building materials lowest thermal conductivity (≤0.024), the highest heat resistance of insulation materials, thermal conductivity is only half of EPS foam polystyrene board. 3. Polyurethane Rigid Foam in continuous dense skin and nearly 100% of the high intensity Internet wall closed cells having the desired impermeability. Spraying construction method to achieve continuous seamless waterproof insulation layer, to form a seamless whole roof and wall insulation housing, excellent water impermeability. 4. super sticky performance (without any intermediate adhesive material), and the roof and exterior wall bonding firm, exposing and anti-wind pressure negative good performance; overall spraying construction, completely eliminate the "hot spot" and "cold bridge" ; flexible gradient technology can effectively prevent the waterproof layer cracking; mechanized operations, automatic batching, uniform quality, construction of fast, short cycle. 5. The chemical stability, long life, does not constitute pollution on the surrounding environment; from the fire self-extinguishing, and only when burning charring not dripping, carbonized layer is essentially the same size and shape, can effectively cut off the entry of air to prevent the fire spread, fire safety performance. As the only insulation and waterproof integration of new materials, polyurethane foam insulation material in the domestic construction industry is still in the initial stages of application. The good news is, in order to accelerate the innovation of building insulation materials, promote the popularization and application of polyurethane foam in building energy saving field, the Ministry of Construction set up a "promote the application of polyurethane building energy efficiency working group" in order to promote the polyurethane foam insulation waterproof material in the domestic construction energy industry applications. Polyurethane insulation buried pipe in some foreign countries has become a relatively mature and advanced technology. Over the last decade, our heating engineering and technical personnel through the digestion and absorption of this advanced technology is driving the domestic pipeline laying technology to a higher level. 10 years of practical results fully proved casein polyurethane insulation buried pipe laying method compared with the traditional trench and laying of overhead, it has many advantages. Buried pipe insulation is made of steel transmission medium, high density polyethylene outer tube, and rigid polyurethane foam insulation pipe and the jacket pipe closely together. Polyurethane insulation energy saving, corrosion, insulation function well, using a long life expectancy. Also polyurethane insulation has leakage alarm line, safe. Once the pipeline leak somewhere attack, conduction through the alarm line can be displayed on a dedicated instrumentation precise orientation and piping insulation level of leakage of water seepage, leakage of size, in order to check infiltration tell disposal personnel agile leaking pipe sections to ensure heating pipe network of safe operation. Polyurethane insulation characteristics: a light density polyurethane insulation, high strength, heat insulation, sound insulation, fire-retardant, cold, corrosion, non-absorbent, simple and convenient construction and other outstanding features, has become the construction, transport, petroleum, chemical, electric power, refrigeration, etc. industry insulation, waterproof plugging and sealing not lack of information. 1, thermal conductivity: thermal conductivity of polyurethane foam insulation materials in the lowest, and thus make the hot material loss reduced to the minimum limit. 2, waterproof, corrosion-resistant old: Because closed-cell polyurethane foam rate of 92% or more, and thus, with polyurethane foam insulation buried pipe insulation effect can not only play, and can effectively prevent water, wet gas and many other corrosive liquids, gas permeability, to prevent the propagation of microorganisms and conduct. Polyurethane insulation outstanding features: (1) a polyurethane pipe insulation pipe work: according to skill needs leave the choice of transport medium pipe joints, seamless, double-sided spiral submerged arc welded steel pipe. (2) polyurethane insulation pipe insulation: use rigid polyurethane foam. (3) Maintenance of polyurethane pipe insulation shell: selection of high density fiberglass. (4) polyurethane insulation pipe leakage alarm line: the production of high temperature prefabricated buried pipe insulation, pipe insulation layer near the police lines buried, once the pipeline leak somewhere attack, after the alarm line of conduction, can in Alarm dedicated instrumentation and shows the exact orientation of the leakage and leakage extent size for the installation. Polyurethane insulation with a light density, high strength, heat insulation, sound insulation, fire-retardant, cold, corrosion, non-absorbent, quick and easy construction and other outstanding features, has become the construction, transport, petroleum, chemical, electric power, refrigeration and other industrial sectors insulation, waterproof plugging, sealing and other essential materials. 1, thermal conductivity: thermal conductivity of polyurethane foam insulation material is the lowest, thus enabling materials to reduce heat loss to a minimum. 2, waterproof, corrosion resistance, aging: Due to the closed cell polyurethane foam rate of more than 92%, therefore, with polyurethane foam insulation buried pipe insulation can not only play a role, and can effectively prevent water, wet gas and many other corrosive liquids, gases soaked prevent the breeding and development of microorganisms. Polyurethane insulation for its excellent performance, easy construction and long service life and much people welcome. (1) Polyurethane pipe insulation pipe work: according to the technical requirements of the transmission medium were used pipe joints, seamless, double-sided spiral submerged arc welded steel pipe. (2) polyurethane insulation pipe insulation layer: rigid polyurethane foam. (3) pipe insulation polyurethane protective shell: high density polyethylene or fiberglass. (4) polyurethane insulation pipe leakage alarm line: the manufacture of high temperature prefabricated buried pipe insulation, the insulation layer near the pipe, buried an alarm line, once the pipeline leakage occurs somewhere through the alarm line of conduction, can in dedicated instrumentation alarm on and show the exact location and extent of the size of the leak leaking so complex.