An installation and construction method of hdpe steel-plastic composite spiral winding drainage pipe

Abstract

The invention provides an HDPE (high-density polyethylene) steel-plastic composite spiral winding drainage pipe installation construction method which includes the steps: performing construction preparation: removing dirt and sundries inside and outside HDPE drainage pipes and pipes connected with the drainage pipes, checking tolerances of connectors of the drainage pipes, and measuring the temperature of the drainage pipes and the pipes; excavating a ditch for placing the drainage pipes on the ground; placing the drainage pipes into the ditch, and adjusting the lengths and end faces of the drainage pipes; connecting the drainage pipes into one drainage pipe by the aid of composite connection of the pipes, an electrical hot melt tape and a hot melting contraction tape; performing a water filling test for checking whether the connected drainage pipe leaks water or not; symmetrically and fully backfilling the ditch from two sides of a pipeline. The temperature of the drainage pipes and the pipes is consistent with that of a construction environment. By the aid of composite connection of the electrical hot melt tape and the hot melting contraction tape, connecting strength is ensured, and zero leakage of a pipeline system can be realized.

Description

technical field [0001] The invention relates to the field of engineering, and more specifically relates to an installation and construction method for HDPE steel-plastic composite spirally wound drainage pipes. Background technique [0002] At present, the drainage pipes used in outdoor drainage pipe network engineering mainly include reinforced concrete pipes, PVC pipes, cast iron pipes, glass steel pipes and HDPE steel-plastic composite spiral winding drainage pipes. Among them, the HDPE steel-plastic composite spiral wound drainage pipe is a new type of high-tech product that is acid and alkali resistant, anti-corrosion, pressure-resistant, abrasion-resistant, non-toxic, green and environmentally friendly, and has a service life of 50 years. Therefore, it is widely used in Municipal sewage, highways, rainwater drainage, farmland irrigation, can also be used as buried cable pipe fittings. The drainage pipe is easy to transport and load, simple and convenient to construct,...

AI Technical Summary

Problems solved by technology

The biggest disadvantage of the electric heating belt connection is that the thermal expansion and contraction interface is brittle and the connection is prone to cracks and is not firm, and it is prone to leakage

[0004] In the prior art, the heat-shrinkable tape connection technology is to wrap the heat-shrinkable tape around the joint of the drain pipe, and use a liquefied gas torch to heat up from the bottom ring seam, so that the heat-shrinkable tape can achieve the purpose of shrinking, thereby connecting the two drain pipes. , its main disadvantage is that it is easy to produce bubbles and cracks at high temperature, and its water resistance is poor, especially the alkali water resistance is not good, and it is prone to leakage

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