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Pipe network for connecting metal composite plastic pipe and plastic pipe

A metal composite, plastic pipe fitting technology, applied in the direction of pipe connection arrangement, pipe/pipe joint/pipe fitting, pipe, etc., can solve the problems of unsatisfactory welding, insufficient pressure bearing capacity, unreliable connection, etc., and achieve reliable and convenient connection method. , The effect of increasing reliable performance and reliable pipe network performance

Inactive Publication Date: 2007-06-27
DONGTAI NEW MATERIAL SCI ANG TECH SICHUAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the contrary, it prevents the hot-melt expansion pressure generated by the inner and outer plastic pipe wall cylinders of the pipe facing the inner cavity cylindrical surface of the pipe fittings, resulting in unsatisfactory welding, unreliable pipe network connection, and insufficient pressure bearing capacity
Furthermore, because the inner and outer plastic pipe walls of the metal-reinforced skeleton are generally thinner, the original plastic wall thickness is pushed by the melt after the socket is axially inserted, resulting in insufficient plastic wall thickness to participate in thermal expansion, so the so-called first connection The connection between the cylindrical surface and the second connecting cylindrical surface is very unreliable

Method used

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  • Pipe network for connecting metal composite plastic pipe and plastic pipe
  • Pipe network for connecting metal composite plastic pipe and plastic pipe
  • Pipe network for connecting metal composite plastic pipe and plastic pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Fig. 1 has provided the figure of embodiment 1 of the present invention. Referring to Fig. 1, the steel-plastic composite pipe 1, the aluminum-plastic composite pipe 2, and the steel-plastic composite pipe 3 compounded with non-porous steel strips connected by the tee pipe connector 4 form a pipe network. On the plastic outer layer 5 in the steel-plastic pipe 1 compounded with perforated steel strips, there is an inclined conical surface 9 connected to the pipe connector 4, which is molten and connected. The material is non-cross-linked heat-resistant polyethylene (PE-RT). One end of the metal skeleton 6 formed by butt welding of perforated steel strips is also connected to the pipe connector 4 with an oblique cone surface 10, and the inner plastic layer 7 has an oblique cone surface 11 connected to the pipeline connector 4, forming a fusion connection. , the material is also non-crosslinked temperature-resistant polyethylene (PE-RT), and there are adhesives 8 in the ho...

Embodiment 2

[0036] Fig. 2 has provided the figure of embodiment 2 of the present invention. Embodiment 2 is basically the same as Embodiment 1. The difference is that the inner layer 19 and the outer layer 20 of the composite plastic pipe are all made of PP-R or HDPE, the pipe connector 21 is a tee, and there is a steel plate skeleton 22 in the middle of the pipe connector body. The insert 23, the metal skeleton 24 of the composite pipe at the right end of the pipeline connector is formed by winding the radial steel wire 26 with the latitudinal steel wire 25 and is welded, and the metal skeleton of the composite pipe at the other end is wound with steel wire 27 left and right to form a skeleton. The end faces of the pipes are all thermally fused with the annular step end face 15 of the inner cavity of the pipe fitting.

Embodiment 3

[0038] Fig. 3 has provided the figure of embodiment 3 of the present invention. Embodiment 3 is basically the same as Embodiment 1. The difference is that the inner layer 31 and the outer layer 32 of the composite plastic pipe and the pipe fitting 33 are all silane crosslinked polyethylene materials, and the three metal composite plastic pipes (including silane crosslinked aluminum plastic pipes with butt welding of aluminum strips and adhesive layers) Pipe 28; steel wire welding skeleton silane cross-linked composite pipe 29 with a binder layer in the skeleton, a composite pipe without a binder layer in a perforated steel strip butt welding skeleton 30) the inner layer 31 of the pipe wall and the end face of the plastic pipe are all in contact with the inner chamber The end face 15 of the annular step is in the state of melting connection, the composite pipe 30 with a butt-welded skeleton of a steel strip with holes, and the composite pipe 29 with a steel wire skeleton welded...

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Abstract

A tube network is composed of the plastic tubers whose end has a conic receipting recess and the composite metal-plastics tubes consisting of a central metallic skeleton layer, an internal plastic layer and an external plastic layer and with conic ends matched with the conic recess at the end of plastic tube. Both tubes are joined through insertion and thermal fusion.

Description

Technical field: [0001] The invention relates to the connection of plastic pipes and plastic pipe fittings, especially to the pipe network connecting metal composite plastic pipes and plastic pipe fittings. technical background: [0002] The known connection between the metal composite plastic pipe and the plastic pipe connector can be connected by mechanical clamping method, and the electric heating wire distributed in the inner cavity of the socket of the pipe connector can be used to connect the electric heating pipe and the cylindrical connection surface or taper of the pipe. There is also an unpublished method of melting and connecting the tapered surface between the pipe and the pipe fitting together with the stepped end surface of the inner cavity of the pipe fitting applied by the author, which is the most consistent method of this application. The connection method disclosed by other people who are close to it is patent application No. 03225501, which discloses a ho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L47/02F16L9/147F16L47/26
Inventor 甘国工
Owner DONGTAI NEW MATERIAL SCI ANG TECH SICHUAN
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