Strategy for the selection of power pipes for the reconstruction of old residential areas in Edong County

Requirements for special working conditions for electric power transformation of old residential areas in Edong County

The old community in Edong County has generally been built for more than 20 years, and the original power pipeline corrosion and insufficient capacity problems are prominent. Most communities do not have a unified pipeline planning, and the pre-buried passages are narrow. Some mountainous and waterfront communities have high underground humidity, and the risk of rat and ant biting is high. Coupled with the climatic characteristics of high temperature and humidity in summer and low temperature and frost heaving in winter, the adaptability of power pipes is put forward.

Power pipe core performance selection standard

When selecting a type, we must first ensure that the insulation performance meets the requirements of national norms, and give priority to plastic power pipes with excellent corrosion resistance and impact resistance, which can effectively deal with soil corrosion and external force bumping problems. At the same time, we must confirm that the flame retardant grade of the pipes meets the standards to avoid fire hazards caused by line overload. Preference should be given to pipes with smooth inner walls, which can reduce the threading resistance and reduce the cable loss during construction.

Pipe adaptation schemes for different construction scenarios

If the buried laying scene is not deep enough and there is a vehicle load above, pipes with higher ring stiffness should be selected to avoid long-term compression and deformation; in the corridor surface decoration scene, pipes with strong weather resistance and UV resistance should be selected to avoid long-term sun exposure and aging cracking; in the branch line threading scene, lighter weight pipes can be selected to fit the narrow working space of the old community and reduce the labor intensity of construction personnel.

Construction and operation and maintenance precautions

When entering the pipe, it is necessary to sample and test the performance indicators to avoid the entry of substandard products; during construction, it is forbidden to bend the pipe violently, and use the same specification pipe fittings to ensure the sealing of the interface; after construction, it is necessary to do a good job of ball inspection to confirm that the pipeline is smooth and reduce the maintenance cost of later operation and maintenance.