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Multi-layer reinforced dredging pipe and forming process thereof

A technology of forming process and strengthening layer, applied in the field of multi-layer reinforced dredging pipe and its forming process, can solve the problems such as the inability to maintain the bonding strength and fatigue damage of the steel mesh and the polymer layer, and achieve strong bonding force and reduce fatigue damage. The effect of affecting and improving the ability to resist deformation

Active Publication Date: 2021-11-19
SHENYANG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Due to the extremely harsh working environment of the dredging pipe, the dredging pipe body is continuously shaken, ups and downs, and collided by severe hydraulic forces, so that the pipe body is continuously stretched, bent, and twisted. The steel wire mesh and the polymer layer in the prior art cannot maintain a good combination. strength, eventually leading to its fatigue failure

Method used

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  • Multi-layer reinforced dredging pipe and forming process thereof
  • Multi-layer reinforced dredging pipe and forming process thereof
  • Multi-layer reinforced dredging pipe and forming process thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] See figure 1 , figure 2 , is a structural schematic diagram of embodiment 1 of a multi-layer reinforced dredging pipe of the present invention, the pipe body 8 and the flanges 9 located at both ends of the pipe body, and the pipe body is a wear-resistant polymer layer 1 and a warning polymer layer 2 from the inside to the outside. , the first composite reinforcement layer 3, the steel wire reinforcement layer 4, the steel wire filling layer 5, the second composite reinforcement layer 6 and the outer polymer layer 7, wherein the thickness of the wear-resistant polymer layer 1 is 40mm, and the thickness of the warning polymer layer 2 The thickness of the first composite reinforcement layer 3 is 15mm, the thickness of the steel wire reinforcement layer 4 is 6mm, the thickness of the steel wire filling layer 5 is 6mm, the thickness of the second composite reinforcement layer 6 is 15mm, and the thickness of the external polymer layer 7 is 3mm.

[0031] In Example 1, the fi...

Embodiment 2-4

[0038] The forming process of the multi-layer reinforced dredging pipe in Examples 2-4 is the same as that in Example 1. The size parameters of each functional layer are shown in Table 1 below, and the forming process parameters are shown in Table 2.

[0039] Table 1

[0040]

[0041] Table 2

[0042]

[0043] It can be seen that in the above embodiments of the present invention, by adopting the structural form of combining the rubber polymer material and the wound steel wire reinforcement layer, by filling the gap of the steel wire with trapezoidal rubber, on the one hand, it can fix the steel wire, and on the other hand, it can also avoid The destructive effect of the steel wire on the pipe body itself after the deformation of the pipe body solves the problem that the dredging pipe body is constantly subjected to fatigue damage in harsh environments. At the same time, the pipe body firmly connects a variety of functional layers of different mechanical structures into ...

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Abstract

The invention relates to the technical field of dredging engineering pipelines, in particular to a multi-layer reinforced dredging pipe and a forming process thereof. The multi-layer reinforced dredging pipe comprises a pipe body and flanges located at the two ends of the pipe body; the pipe body sequentially comprises a wear-resisting macromolecule layer, a warning macromolecule layer, a first composite reinforced layer, a steel wire reinforced layer, a steel wire filling layer, a second composite reinforced layer and an external-application macromolecule layer from inside to outside. The forming steps include mold preparation, laying of all functional layers, vulcanization forming and demolding. Compared with the prior art, the multi-layer reinforced dredging pipe has the beneficial effects that (1) the rubber macromolecule material is combined with the wound steel wire reinforced layer, so that on one hand, steel wires are fixed, and on the other hand, the damage effect of the steel wires on the pipe body after the pipe body is deformed can be avoided; and (2) the functional layers with different mechanical structures are firmly connected into a whole, so that the steel wires can be effectively prevented from being stripped under the action of long-term stretching and retracting, bending and twisting of the pipe body, and the problem that the pipe body of a dredging pipe is continuously subjected to fatigue damage in a severe environment is solved.

Description

technical field [0001] The invention relates to the technical field of dredging engineering pipelines, in particular to a multi-layer reinforced dredging pipe and its forming process. Background technique [0002] The dredging pipe made of polymer materials has high wear resistance, corrosion resistance and low flow resistance, which can effectively reduce the impact of high conveying pressure and high flow rate during the dredging process, and at the same time reduce the content of dredged soil Damage caused by a large amount of gravel, coral reef, coarse sand, hard clay, etc. [0003] The Chinese utility model patent with application number 201220255889.4 discloses an ultra-high molecular weight polyethylene membrane dredging pipeline, including an inner tube, a winding steel wire, a copolymer primer layer, a protective layer and a steel hoop, and the inner tube is 2-3 layers The ultra-high molecular weight polyethylene diaphragm is heat-sealed, and the tensile strength o...

Claims

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Application Information

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IPC IPC(8): F16L9/147F16L23/02F16L57/02B29C70/34B29C35/02B29C70/54
CPCF16L9/147F16L23/02F16L57/02B29C70/34B29C35/02B29C70/54
Inventor 刘桐宇邹雪刘伟华李英民张伟张琨
Owner SHENYANG POLYTECHNIC UNIV
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