Modified polypropylene power cable protection tube convenient to maintain

Abstract

The invention relates to a modified polypropylene power cable protection tube convenient to maintain. The modified polypropylene power cable protection tube comprises a plurality of tube bodies and a cable network. The tube bodies are made from modified polypropylene. The cable network is provided with multiple cable passing holes. The tube bodies sleeve the cable network. The protection tube also comprises maintenance tube clamps. The adjacent tube bodies are fixedly connected through welding. Each maintenance tube clamp is disposed at a welding slit between each two adjacent tube bodies. Each tube body is 5m to 10m in length. Each maintenance tube clamp disposed at the welding slit between each two adjacent tube bodies can effectively prevent the welding slit from cracking, allow the service life of the tube bodies to be prolonged and enable positions that need maintenance to be accurately found once a cable goes wrong later. Meanwhile, the protection tube is simple and reasonable in structure and low in cost, is helpful for later maintenance of a cable, enables the overpressure resistance of the tube bodies to be improved, and is convenient for widespread popularization and use.

Description

technical field [0001] The invention relates to a modified polypropylene power cable protection tube, in particular to a modified polypropylene power cable protection tube which is easy to maintain. Background technique [0002] MPP power pipe is also called MPP cable pipe or MPP power cable protection pipe. Its raw material is made of PP powder (modified polypropylene) as the main masterbatch. At present, in the project of burying communication cables, the burying of the modified polypropylene power cable protection tube gradually replaces the burying of the hollow cement tube, which effectively improves the construction efficiency, and the connection method of the modified polypropylene power cable protection tube is usually: Use a welding machine for hot-melt welding butt joints. The fusion point is about 200 degrees, and the two ends can be butted. If the melting point is lower than 200 degrees, the welding will not be firm. If the fusion point exceeds 220 degrees, the ...

AI Technical Summary

Problems solved by technology

At present, in the project of burying communication cables, the burying of the modified polypropylene power cable protection tube gradually replaces the burying of the hollow cement tube, which effectively improves the construction efficiency, and the connection method of the modified polypropylene power cable protection tube is usually: Use a welding machine for hot-melt welding butt joints. The fusion point is about 200 degrees, and the two ends can be butted. If the melting point is lower than 200 degrees, the welding will not be firm. If the fusion point exceeds 220 degrees, the weld will crack.

For a period of time after the modified polypropylene power cable protection tube was buried, it was found in the actual use process that due to the maintenance of the existing modified polypropylene power cable protection tube, a large amount of earthwork needs to be excavated before the cable can be seen protection tube, and it is impossible to accurately determine the maintenance point, often to do a lot of useless work, which brings inconvenience to the later cable maintenance work

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