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Pipe and manufacturing method thereof

A technology of inner pipe and pipe wall, which is applied in the field of pipe and its manufacturing method, can solve problems such as the separation of aluminum layer and plastic layer, weak radial pressure bearing capacity, and failure of hot melt adhesive, so as to improve the overall structural strength, Improve the pressure bearing capacity of the tube and improve the effect of thermal conductivity

Pending Publication Date: 2021-04-23
SHANGHAI XINGYE MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, when the aluminum-plastic pipe is bent, the aluminum layer may burst at the joint
It can be seen that this aluminum-plastic pipe has the problem of weak radial pressure bearing capacity
[0007] 2. In actual use, due to aging or other reasons, the hot melt adhesive will fail, and the aluminum layer will be separated from the plastic layer, resulting in the relative movement of the two in the axial and circumferential directions.

Method used

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  • Pipe and manufacturing method thereof
  • Pipe and manufacturing method thereof
  • Pipe and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] Figure 1 to Figure 3 A specific embodiment of the pipe of the present application is shown, and the main improvement of the pipe is that: the inside of the pipe wall is provided with a pipe that surrounds the periphery of the pipe axis of the pipe and extends helically along the length direction of the pipe. Metal Coil 1.

[0079] The pipe in this embodiment can be roughly divided into three structural layers, wherein the innermost layer and the outermost layer are both plastic layers. For convenience, the innermost plastic layer is called the plastic inner tube layer 2 , and the outermost plastic layer is called the plastic outer tube layer 3 . The middle layer is the above-mentioned metal coil 1 , the metal coil 1 is wound around the outer periphery of the plastic inner tube layer 2 , and the plastic outer tube layer 3 is wrapped around the outer circumference of the metal coil 1 .

[0080] During the production of the pipe, the plastic inner pipe layer 2 is first ...

Embodiment 2

[0089] Figure 4 to Figure 6 Shown is the second specific embodiment of the tube of the present application, which has basically the same structure as the first embodiment, the only difference being that in this embodiment, a plurality of holes 101 arranged at intervals are opened through the metal coil 1 .

[0090] In the process of making the pipe, when the metal strip with many small holes is wrapped around the periphery of the not yet fully solidified plastic inner pipe layer 2, a part of the flowing plastic inner pipe layer 2 will penetrate into the holes 101, even It flows through the hole 101 to the outside of the metal strip. In this way, the uncured fluid outer plastic tube layer 3 just formed subsequently can fuse with the plastic inner tube layer 2 to form a whole. After curing, the three have much higher connection strength than that of Example 1.

Embodiment 3

[0092] Figure 7 to Figure 9 It shows the third specific embodiment of the pipe of the present application, which has basically the same structure as the second embodiment, the only difference is that the hole 101 on the metal coil 1 is flanged inward along the radial direction of the pipe Flange holes.

[0093] Such setting is advantageous: the thermal conductivity of metal, specifically aluminum, is about 230W / mk, while the thermal conductivity of plastic is generally lower than 1W / mk, and the difference between the two is hundreds of times. The flanging of the flanging hole on the metal coil 1 in the tube extends radially inward into the plastic inner tube layer 2, which shortens the heat transfer path from the water flow (or steam) in the tube to the metal coil 1, and the flange on the metal coil The side hole provides a heat conduction channel in the thickness direction of the pipe wall, which is equivalent to increasing the thickness of the metal coil 1, so that the pip...

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Abstract

The invention relates to a pipe and a manufacturing method thereof. A metal winding belt which surrounds the periphery of the pipe axis of the pipe and spirally extends in the length direction of the pipe is arranged in the pipe wall of the pipe. The pipe has strong in-pipe pressure bearing capacity and a high heat-conducting property.

Description

technical field [0001] The present application relates to a pipe and its preparation method. Background technique [0002] In various occasions such as construction and home furnishing, transportation pipes are one of the indispensable building materials. Most of the transportation pipes on the market are metal pipes and plastic pipes. Metal pipes have the advantages of high structural strength and fast heat transfer, but their cost High, easy to rust, not resistant to acid and alkali, plastic pipes have the advantages of not easy to rust and low cost, but their structural strength is poor and their service life is short. Therefore, the market needs a better quality pipe to solve the problems of traditional pipes. [0003] The Chinese utility model patent with the patent number CN200520022650.2 discloses a hot-melt connection aluminum-plastic pipe. The aluminum-plastic pipe includes a plastic inner layer, an inner adhesive layer, and an aluminum reinforcement layer ( Metal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/16F16L9/147B29D23/00
CPCB29D23/001F16L9/147F16L9/165
Inventor 高峰刘在祥陈艳凤蔡园丰王兵牛争艳
Owner SHANGHAI XINGYE MATERIALS TECH CO LTD
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