Kizil buried Thermal insulation pipe supplier
High temperature prefabricated directly buried thermal insulation pipe is a kind of directly buried prefabricated thermal insulation pipe with good thermal insulation performance, safety and reliability, and low project cost. It effectively solves the problems of heat preservation, sliding lubrication and waterproofing of * * * pipe ends of prefabricated directly buried insulation pipes for 130 ℃ - 600 ℃ high temperature heat transmission in urban central heating. High temperature prefabricated directly buried insulation pipe not only has traditional trench and overhead laying The Conduit The incomparable advanced technology and practical performance, as well as significant social and economic benefits, are also powerful measures for heat supply and energy conservation. The insulation pipe adopts the directly buried heating pipe technology, which marks that the development of China's heating pipe technology has entered a new starting point. Prefabricated directly buried pipes are suitable for thermal insulation and cold insulation works of various mediums in the range of - 50 ℃ - 150 ℃. Thermal insulation pipe is widely used in liquid and gas transmission pipe network, chemical pipeline thermal insulation engineering, petroleum, chemical, central heating network*** air conditioner Ventilation ducts, municipal works, etc.
polyurethane Advantages and characteristics of directly buried insulation pipe
1. Reduce project cost.
According to the Ministry concerned door It is estimated that the double pipe heating pipeline can generally reduce the project cost by about 25% (using glass fiber reinforced plastic as the protective layer) and 10% (using high-density polyethylene as the protective layer).
2. Low heat loss and energy saving.
Its thermal conductivity is λ ＝ 0.013 - 0.03kcal ／ m? 6? 1h? 6? 1oC, which is much lower than other commonly used pipeline insulation materials in the past, and the insulation effect is improved by 4~9 times. Moreover, its water absorption is very low, about 0.2kg/m2. The reason of low water absorption is that the closed cell rate of polyurethane foam is up to 92%. The low thermal conductivity and low water absorption, together with the insulation layer and the high density polyethylene or glass fiber reinforced plastic protective shell with good waterproof performance outside, have changed the situation of traditional trench laying of heat supply pipes "wearing wet cotton padded jacket", greatly reducing the overall heat loss of heat supply pipes. The heat loss of the heat network is 2%, less than the standard requirement of * * * 10%.
3. Anti corrosion, good insulation and long service life.
As the polyurethane rigid foam insulation layer is closely bonded to the outer skin of the steel pipe, it can isolate the infiltration of air and water and play a good anti-corrosion role. At the same time, its foam pores are closed, and its water absorption is very small. High density polyethylene shell and glass fiber reinforced plastic shell have good anti-corrosion, insulation and mechanical properties. Therefore, the outer skin of working steel pipe is difficult to be eroded by external air and water. As long as the water quality inside the pipeline is well treated, according to foreign data, the service life can reach more than 50 years, which is 3~4 times longer than that of traditional trench laying and overhead laying.
4. Small land occupation, fast construction and favorable environmental protection. 
Directly buried heating pipes do not need to build huge trenches, but only need to bury the insulation pipes underground, so the project land occupation is greatly reduced, the amount of earthwork excavation is reduced by more than 50%, and the amount of civil masonry and concrete is reduced by 90%. At the same time, insulation pipe processing and on-site trenching are conducted in parallel, and only on-site joints are needed, which can shorten the construction period by more than 50%.
5 Safety.
The polyurethane directly buried insulation pipe is equipped with a leakage * * * line. Once a leakage occurs somewhere in the pipe, the transmission of the * * * line can show the exact location and degree of water leakage of the insulation pipe on the * * * detection instrument, so as to notify the leakage detection personnel to quickly deal with the leaking pipe section and ensure the safe operation of the heating pipe network. At present, no leakage * * * line has been set for insulation pipes produced in China, which needs to be filled in.
