Installation and construction technology of large-diameter hdpe plastic-steel winding pipe

Abstract

The invention discloses a large-diameter HDPE plastic steel winding pipeline installation construction process. The problems that a heat shrinkable tape anticorrosion repaired mouth is baked mainly though artificial flame, and especially for a large-diameter pipeline, heating is nonuniform during construction are solved. According to the main points of the technical scheme, the inside and the outside of a connector between pipelines is welded and sealed through a heat shrinkable tape; heat shrinkable tape welding and sealing comprise the steps that preheating is conducted through manual target baking heating till the temperature of the pipeline connector is 50 DEG C-70 DEG C; epoxy primer with the thickness not smaller than 150 [mu]m is brushed on the pipeline connector evenly; the rubber face of the heat shrinkable tape is attached to the outer side face of the pipeline connector; and annular heating equipment is installed on the outer side of a pipeline repaired mouth, and the repaired mouth is heated and based till complete fusion is achieved; and a good adhesion effect is ensured, thus the service life of the heat shrinkable tape is longer, zero leakage of the pipelines is achieved, fluid in the pipelines does not flow out, and a better environmental protection effect is archived.

Description

technical field [0001] The invention relates to the field of engineering, in particular to an installation and construction process for large-diameter HDPE plastic-steel winding pipes. Background technique [0002] Pipeline construction widely exists in many industries such as petroleum, chemical industry, electric power, communication, municipal administration and construction. High-density polyethylene (HDPE—high density polyethylene) winding pipe is a flexible interface with light weight and no need to make pipes. Concrete foundation can shorten the construction period and other characteristics. [0003] At present, the current connection methods of existing HDPE winding pipes are as follows: butt welding connection, electric welding pipe hoop connection, socket connection with sealing ring, screw connection method, linear expansion socket connection , Flange connection method. Each of these connection methods has its own performance characteristics, and the application...

AI Technical Summary

Problems solved by technology

[0006] By adopting the above-mentioned technical scheme, the drainage pipe is connected by means of electric melting tape, which not only ensures the strength of the connection, but also realizes the sealing performance of the pipe; and preheats in the form of artificial baking target, which plays a role in the pasting of the heat shrinkable tape. As a bedding, in this embodiment, ring heating equipment is used to heat the outside of the pipe port, which solves the problem of uneven heating in the process of manual heating with baking targets in the past, ensures good adhesion effect, and makes the heat shrinkable tape The service life is longer, the pipeline achieves zero leakage, and the fluid inside the pipeline will not flow out, which is more environmentally friendly

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