Knowledge of heating pipe aerogel insulation materials
With the advancement of science, the general heating pipes will be equipped with thermal insulation materials. The purpose of thermal insulation is to reduce the heat transfer from the pipes that convey the heat medium and cause heat loss. The heat preservation of the pipes can save heat and reduce the operating cost of the system, so indoors In the heating system, the heating pipe aerogel insulation material is generally adopted. Next, let's take a look at the knowledge about heating pipe insulation materials.
Pipe insulation - advantages
1 Reduce project cost.
Double-regulated heating pipes can generally reduce the construction cost by 25% (using FRP as a protective layer) and 10% (using an aerogel insulation blanket as a protective layer).
2 Low heat loss and energy saving.
The aerogel insulation effect is increased by 4 to 9 times. Low thermal conductivity and 99.9% water-repellent rate, combined with aerogel insulation layer and high-density polyethylene or FRP protective shell with good waterproof performance, greatly reduce the overall heat loss of the heating pipe, the heat loss of the heat network is 2 %, less than the international standard of 10%.
3. Anti-corrosion, good insulation performance and long service life.
Oil pipeline insulation Because the aerogel insulation layer is tightly bonded to the outer skin of the steel pipe, the penetration of air and water is isolated, which can play a good anti-corrosion effect. At the same time it has a strong water repellency. The high-density polyethylene casing and the FRP casing have good corrosion resistance, insulation and mechanical properties. Therefore, the outer skin of the working steel pipe is hardly eroded by the outside air and water. As long as the internal water quality of the pipeline is well treated, according to foreign data, the service life of the oil pipeline insulation can reach more than 50 years, which is 3-4 times higher than the traditional trench installation and overhead laying.
4. It occupies less land and has faster construction and is environmentally friendly.
The direct buried heating pipeline does not need to build a huge trench, and only the aerogel insulation pipe is buried underground, thus greatly reducing the project land occupation, reducing the earthwork excavation amount by more than 50%, reducing the civil construction and concrete volume. 90%. At the same time, the insulation pipe processing and the on-site trenching are carried out in parallel, and only the on-site joints can shorten the construction period by more than 50%.
5 Security.
The pipeline aerogel insulation is equipped with a leakage alarm line. Once a leak occurs in the pipeline, the transmission line can be used to display the exact location of the water pipe leakage and leakage and the degree of leakage on the special inspection instrument. The size is to inform the inspecting personnel to quickly handle the leaking pipe section and ensure the safe operation of the heating pipe network.
Pipeline aerogel insulation consists mainly of four parts.
(1) Working steel pipe: According to the technical requirements of the conveying medium, the seamed steel pipe, the seamless steel pipe and the double-sided submerged arc spiral welded steel pipe are respectively used.
(2) Insulation layer: an aerogel insulation blanket is used.
(3) Protective case: 1 high density polyethylene or glass steel.
(4) Leakage alarm line: When manufacturing the oil pipeline insulation, in the aerogel insulation layer close to the steel pipe, an alarm line is buried. Once the pipeline leaks somewhere, the transmission of the alarm line can be used in the special detection instrument. The alarm is displayed and the exact position of the leak and the degree of leakage are displayed to inform the maintenance personnel to quickly handle the leaking pipe section and ensure the safe operation of the heat network.
The above is some information about the aerated gel insulation materials for heating pipes collected by Xiaobian. I hope to help you.