1. Polyurethane direct buried insulation steel pipe is a material widely used in urban underground pipeline engineering. It combines insulation materials and steel pipes to provide the strength and durability of steel pipes with excellent thermal insulation and moisture resistance. Its insulation layer is mainly made of polyurethane material, because polyurethane has the advantages of good thermal insulation performance, smooth surface, beautiful appearance and light weight, so that polyurethane directly buried insulation steel pipe has become an indispensable part of urban heating.
2. When manufacturing polyurethane directly buried insulation steel pipes, polyurethane direct buried insulation steel pipes will produce steel pipes of different specifications, different models, different strengths and different densities according to the requirements of various pipeline projects. In this way, it can ensure that it can be used normally, stable and durable during construction in the future. At the same time, on the premise of ensuring quality, manufacturers will also strive to control costs and benefit more people.
3. What are the uses of polyurethane direct buried insulation steel pipes? First of all, it is the choice of urban heating, ventilation, air conditioning, water supply and drainage pipelines, which can not only ensure the normal operation of pipelines, but also play an energy-saving and environmental protection effect; Secondly, it can also be used in the transmission pipeline in the fields of petroleum and chemical industry, which not only eliminates the environmental damage and health hazards caused by pipeline oil leakage and gas discharge, but also reduces the production cost of unit products and improves the competitiveness of enterprises.
4. Polyurethane direct buried insulation steel pipe manufacturers are also constantly innovating and improving their own technology and quality. For example, in product manufacturing, advanced technology and equipment are used to ensure the quality and efficiency of products; In terms of after-sales service, polyurethane direct buried insulation steel pipe manufacturers will also provide customers with thoughtful services such as installation guidance, technical consultation, and timely after-sales service, so that users can feel the value of the brand.
The basic structure of polyurethane direct buried insulation pipe.
In addition to the structure of general directly buried pipes, polyurethane directly buried insulation pipes also have thermal insulation layers. Its basic structure consists of four parts: inner pipe, insulation layer, steel pipe and outer layer. The inner pipe is the main body of the conveying medium, the insulation layer is to prevent the release of heat, the steel pipe plays a mechanical protective role, and the outer layer is a layer of protection to isolate the soil and the surrounding environment.
The influence of pipe diameter selection on polyurethane directly buried insulation pipe.
1) Performance indicators: The performance indicators of pipelines include economy, reliability, safety, etc. Reasonable pipe diameter and pipe selection can effectively improve the economy of polyurethane directly buried insulation pipe.
2) Hydraulic calculation: The hydraulic calculation of the pipeline is the basis to ensure its normal operation. A reasonable pipe diameter should be able to minimize the resistance of the pipe if it meets the design flow requirements.
3) Thermal calculation: The thermal calculation of the pipeline mainly considers the thermal insulation performance of the insulation layer. Through the selection of the diameter of the polyurethane direct buried insulation pipe, the heat transfer loss of the pipeline can be reduced, and the insulation effect is better.
The selection principle of polyurethane direct buried insulation pipe diameter.
1) Determine the pipe diameter according to the design flow rate and the temperature of the conveying medium. For low-temperature medium, the pipe diameter can be appropriately reduced to improve the insulation effect.
2) According to the length of the pipeline, topography, landform and other characteristics, determine the hydraulic slope and diameter of the pipeline. For areas with complex terrain, the pipe diameter should be appropriately increased.
3) Determine the diameter of the pipe according to the mechanical strength of the pipeline. On the premise of meeting the mechanical strength requirements in the design and use process, the pipe diameter should be reduced as much as possible to reduce the cost of the pipeline and the maintenance cost.