Multi-layer framework reinforced plastic composite pipe

Abstract

The invention discloses a multi-layer framework reinforced plastic composite pipe which comprises a pipe body formed through the extrusion molding technology, wherein at least two layers of reinforcedframeworks are fixed between the inner wall and the outer wall of the pipe body through the extrusion molding technology and comprise at least one of a reinforced framework A or a reinforced framework B; the reinforced framework A comprises a plurality of longitude lines arranged in the circumferential direction of the pipe body; the longitude lines extend in the axial direction of the pipe body,are spirally wound through latitude lines in the axial direction of the pipe body, and are fixed through welding; the longitude lines and the latitude lines are steel wires; and the reinforced framework B is a continuous integrated grid structure. The multi-layer framework reinforced plastic composite pipe can improve the pipe loading capacity and organically combines high rigidity of steel withnon-corrosibility of plastic; the pipe with relative smaller wall thickness can meet the pressure using requirement, and the excellent characteristics of the plastic pipe are also kept. The multi-layer framework reinforced plastic composite pipe is suitable for the technical field of performance reinforcement of the composite pipe during the production process of plastics-steel composite pipes.

Description

technical field [0001] The invention belongs to the technical field of steel-plastic composite pipe production, and in particular relates to a multilayer skeleton reinforced plastic composite pipe. Background technique [0002] With the recognition of the industry, the steel-plastic composite pipe has higher requirements for the caliber and pressure of the pipe. The strength of the built-in skeleton of the pipe plays a decisive role in the improvement of the pressure level of the pipe. The steel mesh reinforced plastic composite pipes that exist in the market are densely wound with steel mesh to infiltrate the adhesive resin, and then compounded with polyethylene to form a pipe. The steel mesh layer and polyethylene layer of this structure are under the action of external force and internal stress. It is easy to cause delamination, and with the increase of caliber and pressure level, the number of high-strength steel wire reinforcement layers used is more, the probability of...

AI Technical Summary

Problems solved by technology

The steel mesh reinforced plastic composite pipes that exist in the market are densely wound with steel mesh to infiltrate the adhesive resin, and then compounded with polyethylene to form a pipe. The steel mesh layer and polyethylene layer of this structure are under the action of external force and internal stress. It is easy to cause delamination, and with the increase of caliber and pressure level, the number of high-strength steel wire reinforcement layers used is more, the probability of delamination will be greatly increased

Another kind of steel-plastic composite pipe, steel skeleton polyethylene plastic composite pipe, belongs to the single-layer reinforced structure pipe. The reinforcement layer is formed by welding the steel mesh skeleton of warp and latitude lines. A stable mutual transmission structure is formed between polyethylene and steel mesh skeleton. The structure is stable, but as the caliber increases, the single-layer reinforced structure can no longer meet the pressure requirements of the product

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