Novel impact-resistant composite pipe

Abstract

The utility model discloses a novel impact-resistant composite pipe, which comprises an inner lining layer, an outer lining layer and an outer lining layer, the inner lining layer structurally comprises polyethylene layers and an annular alloy net, and the annular alloy net is embedded between the polyethylene layers; the buffer layer is arranged on the outer surface of the lining layer; the compression-resistant layer is arranged on the outer surface of the buffer layer, alternate wave crests and wave troughs are arranged on the outer surface of the compression-resistant layer, and net-shaped reinforcing ribs are arranged on the outer surface of the compression-resistant layer; the reinforcing layer is arranged on the outer surface of the compression-resistant layer; the anti-permeation layer is arranged on the outer surface of the reinforcing layer; and the tensile layer is arranged on the outer surface of the impermeable layer. Through the arrangement of the composite pipe structure, when the composite pipe is impacted, the compression-resistant structure in the pipe can well bear stress applied by the outside, meanwhile, the buffer layer can have a good buffer effect on the stress, the stability of the inner layer structure of the pipe is improved, and the durability and impact resistance of the composite pipe are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of composite pipes, and particularly relates to a novel double-layer impact-resistant composite pipe. Background Art

[0002] At present, composite pipes are used as pipelines for transporting substances in multiple fields, and they are usually composed of polyethylene plastics. However, considering the application scenarios of composite pipes, they usually need to have strong compressive and tensile resistance capabilities, as well as wear-resistant characteristics. The current composite pipes are mainly composed of a polyethylene material with multiple composite layers added, which has the advantages of being lightweight, easy to install, and efficient. However, due to the plastic material itself, there are always problems such as insufficient compressive and tensile strength.

[0003] For example, the patent application number CN202020585959.7 discloses a novel composite pipe with anti-collapse ability. In this patent, the compressive and tensile resistance of the composite pipe is improved by adding a strengthening layer and an anti-collapse layer. However, there is no buffer layer inside the composite pipe to buffer the force. Only the structures of the composite strengthening layer and the inner lining layer bear the acting force, and the bearing capacity of the strengthening layer and the inner lining layer is always limited. In the long run, it will affect the internal pressure-bearing performance of the pipe layer, resulting in a decrease in the overall pressure-bearing performance of the composite pipe or even damage to the pipe body. Summary of the Utility Model

[0004] An object of the utility model is to solve at least the above problems and / or defects, and provide at least the advantages described hereinafter.

[0005] To achieve these objects and other advantages of the utility model, there is provided a composite pipe, including:

[0006] An inner lining layer, whose structure includes: a polyethylene layer and an annular alloy mesh, and the annular alloy mesh is embedded in the polyethylene layer;

[0007] A buffer layer, which is arranged on the outer surface of the inner lining layer;

[0008] A compressive layer, which is arranged on the outer surface of the buffer layer. The outer surface of the compressive layer is provided with alternating wave crests and wave troughs, and a mesh reinforcing rib is arranged on the outer surface of the compressive layer;

[0009] A strengthening layer, which is arranged on the outer surface of the compressive layer;

[0010] An anti-permeation layer, which is arranged on the outer surface of the strengthening layer;

[0011] A tensile layer, which is arranged on the outer surface of the anti-permeation layer.

[0012] Preferably, the outer surface of the strengthening layer is set as a circumferential surface, and the inner surface of the strengthening layer is provided with wave troughs and wave crests corresponding to the wave crests and wave troughs on the outer surface of the compressive layer.

[0013] Preferably, in the above technical solution, a plurality of positioning bars are axially arranged at equal intervals on the outer surface of the reinforcing layer.

[0014] Preferably, the mesh reinforcing rib includes a corrugated alloy ring and alloy filaments. The peaks and valleys of the corrugated metal ring are welded to the alloy filaments, and the adjacent corrugated alloy rings are equidistant.

[0015] Preferably, the tensile layer is a carbon fiber braided tube layer composed of multiple intertwined carbon fiber filaments.

[0016] The utility model has at least the following beneficial effects:

[0017] The utility model sets the interlayer structure of the composite pipe, and adds a buffer layer, a compressive layer and a mesh reinforcing rib to the outer surface of the inner lining layer containing an alloy skeleton. At the same time, a reinforcing layer and a tensile layer are arranged on the outer layer of the pipe. Through the above structural design, not only the overall pressure-bearing and tensile capacity of the composite pipe is enhanced, but also part of the force absorbed by the buffer layer is transmitted to the stress inside the pipe, avoiding the decline of the pressure-bearing performance caused by the inability of the internal structure to be buffered when stressed, and making the overall structure of the composite pipe more stable.

[0018] Other advantages, objectives and features of the utility model will be partially reflected by the following description, and partially will be understood by those skilled in the art through the research and practice of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a new type of impact-resistant composite pipe

[0020] Figure 2 It is a cross-sectional view of the pipe layer of the composite pipe DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following further elaborates on the present utility model in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the text of the specification. It should be understood that terms such as "having", "comprising", and "including" used herein do not exclude the presence or addition of one or more other elements or their combinations. It should be noted that in the description of the present utility model, the orientation or positional relationship indicated by the terms is based on the orientation or positional relationship shown in the accompanying drawings. This is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In the description of the present utility model, unless otherwise clearly specified and limited, terms such as "installed", "provided with", "sheathed / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, in the present utility model, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over", and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below", and "beneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0022] As Figures 1 - 2 shown, a new type of impact-resistant composite pipe includes;

[0023] An inner lining layer 1, whose structure includes: a polyethylene layer 2 and an annular alloy mesh 3, and the annular alloy mesh 3 is embedded between the layers of the polyethylene layer 2;

[0024] A buffer layer 4, which is arranged on the outer surface of the inner lining layer 1;

[0025] A compression-resistant layer 5, which is arranged on the outer surface of the buffer layer 4. The outer surface of the compression-resistant layer 5 is provided with alternating wave crests and wave troughs, and a mesh reinforcing rib 9 is arranged on the outer surface of the compression-resistant layer 5;

[0026] A strengthening layer 6, which is arranged on the outer surface of the compression-resistant layer 5;

[0027] An anti-permeation layer 7, which is arranged on the outer surface of the strengthening layer 6;

[0028] A tensile layer 8, which is disposed on the outer surface of the anti-seepage layer 7.

[0029] Working principle: The composite pipe is successively provided with an inner lining layer 1, a buffer layer 4, a compressive layer 5, a reinforcing layer 6, an anti-seepage layer 7 and a tensile layer 8 from the inside to the outside. By arranging an annular alloy mesh 3 between the polyethylene layers 2, the overall compressive and tensile strength of the inner lining layer 1 is enhanced. The compressive layer 5 and the reinforcing layer 6 are used to bear the external force applied to the composite pipe. At the same time, the wave crests on the outer surface of the compressive layer 5 block the force, and the wave troughs of the compressive layer 5 transfer the force to the buffer layer 4 while bearing part of the force. When the force is transferred to the buffer layer 4, part of the force is absorbed by the buffer layer 4, and the buffer layer 4 reduces the deformation amount of the adjacent composite layers. At the same time, the buffer layer 4 avoids the interaction force between the compressive layer 5 and the inner lining layer 1 when the composite pipe is stressed, making the internal structure of the pipe more stable. By arranging a mesh reinforcing rib 9 on the outer surface of the compressive layer 5, the axial bearing capacity of the compressive layer 5 is improved. The compressive layer 5 is successively provided with a reinforcing layer 6, an anti-seepage layer 7 and a tensile layer 8 on the outer surface. The reinforcing layer 6 is used to improve the pressure resistance of the composite pipe, the anti-seepage layer 7 prevents external chemical substances from penetrating the pipe layer, and the tensile layer 8 is used to enhance the tensile and wear-resistant capabilities of the composite pipe. Through the above structural arrangement, the compressive and tensile characteristics of the composite pipe are further comprehensively improved.

[0030] In the above technical solution, the outer surface of the reinforcing layer 6 is set as a circumferential surface, and the inner surface of the reinforcing layer 6 is provided with wave troughs and wave crests corresponding to the wave crests and wave troughs on the outer surface of the compressive layer 5. Through the above arrangement, the reinforcing layer 6 and the compressive layer 5, as the pressure-bearing layers of the composite pipe, can cooperate well with each other when stressed, block the force while not twisting between layers, and improve the stability of the internal structure of the composite layer.

[0031] In the above technical solution, a plurality of positioning strips 10 are axially arranged at equal intervals on the outer surface of the reinforcing layer 6. Through the above arrangement, it is avoided that the reinforcing layer 6 is stressed and radially twisted with the anti-seepage layer 7, resulting in gaps between layers and affecting the overall compressive performance of the composite pipe.

[0032] In the above technical solution, the mesh reinforcing rib 9 includes a corrugated alloy ring and alloy filaments. The wave crests and wave troughs of the corrugated metal ring are both welded to the alloy filaments, and the adjacent corrugated alloy rings are equidistant. Through the above arrangement, the axial bearing and tensile capabilities of the compressive layer 5 are further improved, and the comprehensive bearing capacity of the composite pipe is enhanced.

[0033] In the above technical solution, the tensile layer 8 is a carbon fiber braided pipe layer composed of multiple carbon fiber filaments intertwined. By adding the tensile layer 8, the outer surface of the composite pipe has tensile and wear-resistant characteristics, enabling the composite pipe to be applicable to different environments.

[0034] Although the embodiments of the present utility model have been disclosed as above, it is not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present utility model. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present utility model is not limited to specific details and the illustrated examples herein.

Claims

1. A novel impact-resistant composite pipe, characterized in that, Comprising: An inner lining layer, the structure of which includes: a polyethylene layer and an annular alloy mesh, and the annular alloy mesh is embedded between the polyethylene layers; A buffer layer, which is arranged on the outer surface of the inner lining layer; A compressive layer, which is arranged on the outer surface of the buffer layer, and the outer surface of the compressive layer is provided with alternating wave crests and wave troughs, and a mesh reinforcing rib is arranged on the outer surface of the compressive layer; A strengthening layer, which is arranged on the outer surface of the compressive layer; An anti-permeation layer, which is arranged on the outer surface of the strengthening layer; A tensile layer, which is arranged on the outer surface of the anti-permeation layer.

2. The novel impact-resistant composite pipe according to claim 1, characterized in that, The outer surface of the strengthening layer is set as a circumferential surface, and the inner surface of the strengthening layer is provided with wave troughs and wave crests corresponding to the wave crests and wave troughs on the outer surface of the compressive layer.

3. The novel impact-resistant composite pipe according to claim 1, characterized in that, A plurality of positioning strips are arranged on the outer surface of the strengthening layer at equal intervals axially.

4. The novel impact-resistant composite pipe according to claim 1, wherein, The mesh reinforcing rib includes a corrugated alloy ring and an alloy filament, and the wave crests and wave troughs of the corrugated metal ring are both welded to the alloy filament, and the adjacent two corrugated alloy rings are equidistant.

5. The novel impact-resistant composite pipe according to claim 1, wherein, The tensile layer is a carbon fiber braided tube layer composed of multiple carbon fiber filaments intertwined.

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