Insulation method of polyurethane lined pipes
Writer： admin Time：2020-05-12 14:09 Browse：℃
Polyurethane lined pipe manufacturers introduced and analyzed polyurethane prefabricated direct buried insulation pipes. Polyurethane lined pipes have been in practical use in China for more than ten years. Practice has proved that the laying method of polyurethane prefabricated directly buried insulation pipes and traditional trench and overhead laying In contrast, it has many features such as low project cost, low heat loss, energy saving, corrosion protection, good insulation performance, long service life, less land occupation, fast construction, and environmental protection. It has developed rapidly in China's heating engineering. The polyurethane-lined pipeline insulation layer has two methods: on-site foaming construction and insulation tile construction. No matter which method is used for construction, there should be no defects such as annular space, cracking and delamination.
Insulation method of polyurethane lined pipes:
In the use of polyurethane-lined pipes, polystyrene boards and extruded plastic boards are generally used together, and the method of bonding and anchoring is used for insulation construction. Although there are many firmwares used, but after After the test, it was found that adding an average of ф6 plastic anchors per square meter can increase the average heat transfer coefficient of the outer wall by 0.004, which can increase the heat lost by the thermal bridge components to construction and production. In the entire process of using polyurethane-lined pipes, there is no need to have any metal anchors and walls to fix it, so it can effectively control the thermal conductivity index.
Insulation performance of polyurethane lined pipes:
The use of polyurethane-lined pipes has very good thermal insulation performance. Even if the material has a low thermal conductivity, it can still have a good blocking effect, which will not cause heat loss, but For some heat convection heat transfer, there is no way. According to statistics of relevant departments, it is found that 40% of the heat energy loss in the building is lost through some gaps, and the polyurethane lining The pipeline can well block the heat conduction, and the sealing performance is also very good.
Chai Shang Trading Company specializes in the production of polyurethane-lined pipes. The heat is delivered to us through thermal insulation pipes. In addition, the urban roads today are very smooth and hard. In order to make your life unbearable, you choose thermal insulation The construction of the pipe is very simple, and there is no need to consume too much manpower and material resources. In terms of cost savings, the insulation pipe is definitely a good choice. The trench size of the polyurethane-lined pipe trench should ensure that there is a 200-250㎜ space between the pipe and the trench wall for on-site installation and joint treatment. The bottom of the trench is tamped with brick and soil.
