Underground drainage pipe is a pipe laid underground for the transportation of liquids, gases or loose solids. Their main functions are transportation, distribution and collection and discharge of wastewater.
Function
Underground drainage pipe system consists of pipes and their ancillary facilities, including main pipes, branch pipes and pipes leading to treatment plants. The main function of this system is to collect and treat wastewater, sewage and rainwater generated in the city, ensure the normal operation of the urban drainage system, and prevent urban waterlogging and water pollution.
Underground drainage pipe type
Underground drainage pipe system has various types, including plastic drainage pipes, concrete pipes reinforced concrete pipes, etc. These pipes are selected and installed according to different use environments and requirements. For example, plastic drainage pipes are suitable for some occasions with high requirements for corrosion resistance, while concrete pipes are suitable for occasions that need to withstand greater pressure. These different types of pipes play their respective roles in the city’s drainage system and jointly guarantee the city’s drainage needs. This article mainly introduces plastic PE Underground drainage pipes.
Installation process
1. Determine the direction of the pipeline: Before starting the installation, it is necessary to determine the starting and ending positions of the pipeline, as well as the length, diameter and other specifications of the pipeline, and consider factors such as terrain, buildings, roads, etc. to ensure the safety and effectiveness of the pipeline.
2. Prepare materials and equipment: Prepare the required PE pipes, flanges, elbows, joints, brackets, bolts, sealing gaskets, and other materials, as well as equipment such as Pipe Welding Machine and cutting machine.
3. Dig trenches: According to the determined direction of the pipeline, dig trenches that meet the requirements of the specifications, ensure that the depth and width of the trench are appropriate, and the bottom is flat to facilitate subsequent operations.
4. Install pipe supports: In order to ensure the stability and verticality of the PE pipeline, it is necessary to install pipe supports at the construction site, and the spacing of the supports should be set according to the design requirements.
5. Install PE pipelines: Place the pipelines in the trenches section by section and connect them. The flanges or joints should be installed at the joints first, then fixed by bolts, and sealing gaskets should be used to ensure the sealing of the joints.
6. Perform hot-melt welding: For direct connection of PE pipes, hot-melt welding method can be used. Before welding, the pipe needs to be cut and processed to ensure that both ends are flat, and then the heating plate is used to heat and press the two pipe ends together to achieve the welding purpose.
7. Install elbows and valves: According to the design requirements, accessories such as elbows and valves need to be installed in the middle of the pipe. Measurements should be made and marked before installation to ensure correct installation.
Advantages of PE Underground drainage pipe
1. Physical properties and corrosion resistance: PE pipes are made of medium-density polyethylene, which ensures the rigidity and strength of the pipe, and also has certain flexibility and creep resistance. This material can resist corrosion from a variety of chemical media and does not require anti-corrosion treatment, thereby extending its service life. The corrosion resistance of PE pipes makes them perform well in areas with high groundwater levels and high land humidity, such as coastal areas, avoiding early damage caused by corrosion.
2. Construction convenience: PE pipes are light in weight, relatively easy to carry and install, reducing construction difficulty and engineering costs. In addition, PE pipes can be connected by hot-melt connection, which is not only simple to operate, but also has good sealing performance, reduces the number of joints, and further simplifies the construction process.
3. Water flow characteristics: The inner wall of the PE pipe is smooth and scale-free, which reduces water flow resistance and improves flow capacity. Compared with metal pipes, PE pipes have stronger water flow capacity, which can not only improve water flow efficiency but also save costs.
4. Sealing: The connection of PE pipes is hot-melt, and the tensile strength and burst strength of the interface are higher than the pipe body, which realizes the integration of the joint and the pipe and enhances the stability of the pipeline system.
5. Economic efficiency: The cost of PE pipes is relatively low. Compared with metal pipes, it can reduce about one-third of the project investment, especially on large-diameter pipes. This economic advantage is more obvious. In addition, the maintenance cost of PE pipes is also relatively low, which further reduces the total cost of ownership.
