High-pressure-resistant carbon fiber polyethylene composite steel belt framework pipe

Abstract

The utility model discloses a high pressure resistant carbon fiber polyethylene composite steel belt skeleton pipe, which comprises an inner layer, a first bonding resin layer, a skeleton layer, a second bonding resin layer and a woven outer layer, the skeleton layer is arranged on the periphery of the inner layer, the first bonding resin layer is arranged between the inner layer and the skeleton layer, and the inner layer and the skeleton layer are bonded by the first bonding resin layer; the woven outer layer is arranged on the periphery of the framework layer, and the second bonding resin layer is located between the framework layer and the woven outer layer and bonds the framework layer and the woven outer layer. In the pipe, the inner layer, the framework layer and the woven outer layer form a triple composite structure, are matched with each other to achieve synergistic interaction, and are compounded and bonded through the two middle bonding resin layers to form a whole with triple structure gradients.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of tubular products, more specifically, to a kind of high-pressure-resistant carbon fiber polyethylene composite steel belt skeleton tubular product. BACKGROUND

[0002] The strength performance of ordinary pipes is poor, and in some special application scenarios, the pressure rating needs to be increased to meet the needs of use. At present, in order to increase the pressure performance rating of the pipe, a thicker wall thickness and a heavier way are often used to improve the performance, although the performance can be improved, the outer diameter and weight of the pipe will be greatly increased, and the strength performance improvement effect is not good.

[0003] Therefore, a new scheme needs to be proposed to solve this problem. UTILITY MODEL CONTENT

[0004] The utility model aims at overcoming the deficiencies of the prior art, and provides a kind of high-pressure-resistant carbon fiber polyethylene composite steel belt skeleton tubular product.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A kind of high-pressure-resistant carbon fiber polyethylene composite steel belt skeleton tubular product, including inner layer, first adhesive resin layer, skeleton layer, second adhesive resin layer and braided outer layer, the skeleton layer is arranged at the outer periphery of the inner layer, the first adhesive resin layer is located between the inner layer and the skeleton layer, and the inner layer and the skeleton layer are bonded;The braided outer layer is arranged at the outer periphery of the skeleton layer, and the second adhesive resin layer is located between the skeleton layer and the braided outer layer, and the skeleton layer and the braided outer layer are bonded.

[0007] The utility model is further provided, wherein the inner layer is a high-density polyethylene layer.

[0008] The utility model is further provided, wherein the inner layer is made of PE100 grade high-density polyethylene.

[0009] The utility model is further provided, wherein the skeleton layer includes a steel belt, and the steel belt is wound around the outer periphery of the first adhesive resin layer to form the skeleton layer.

[0010] The utility model is further provided, wherein the width of the steel belt is 1.2-1.8 cm.

[0011] The utility model is further provided, wherein the braided outer layer is a carbon fiber braided outer layer.

[0012] The utility model is further provided, wherein the braided outer layer is a double-layer carbon fiber braided outer layer.

[0013] The utility model is further provided, wherein the braided outer layer adopts ±30° asymmetric double-layer braided structure.

[0014] In summary, the utility model has the following beneficial effects:

[0015] Among the pipe material, the inner layer, the skeleton layer and the braided outer layer form a triple composite structure, which synergistically cooperates, and the first adhesive resin layer and the second adhesive resin layer play a composite bonding role, which can composite bond the triple structure to form a whole with a gradient.

[0016] By adopting the high-density polyethylene layer as the inner layer, the strength performance of the inner layer of the pipe material can be increased, and the internal performance is stronger and more stable; the middle skeleton layer adopts a steel belt, which can be tightly covered after spiral winding, and the inner and outer sides of the skeleton layer are limited by two layers of adhesive resin layers, so that a stable and high-strength skeleton layer structure is formed, which is a middle supporting skeleton with better compression resistance; the braided outer layer of the outer layer adopts a double-layer carbon fiber braided structure, which can increase the tensile resistance, compression resistance and torsion resistance of the pipe material, and increase the overall strength of the pipe material. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structure schematic view of a high-pressure-resistant carbon fiber polyethylene composite steel belt skeleton pipe material in the embodiment.

[0018] Figure 2 It is a structure schematic view of a steel belt in the embodiment.

[0019] The reference signs: inner layer 1; first adhesive resin layer 2; skeleton layer 3; steel belt 31; gap groove 32; sawtooth groove 33; straight edge 34; second adhesive resin layer 4; braided outer layer 5. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0021] The embodiment discloses a high-pressure-resistant carbon fiber polyethylene composite steel belt skeleton pipe material, which refers to Figure 1 The drawings show that it comprises an inner layer 1, a first adhesive resin layer 2, a skeleton layer 3, a second adhesive resin layer 4 and a braided outer layer 5, and adopts a five-layer composite structure.

[0022] The layers of the pipe material are sequentially arranged from inside to outside as an inner layer 1, a first adhesive resin layer 2, a skeleton layer 3, a second adhesive resin layer 4, and a braided outer layer 5. The inner layer 1 is directly in contact with the medium in the pipe, the skeleton layer 3 serves as an intermediate skeleton of the pipe and plays a role in overall reinforcement, and the braided outer layer 5 is located at the outermost side of the pipe and forms a protective coating on the outer layer of the pipe.

[0023] The inner layer 1, the skeleton layer 3, and the braided outer layer 5 form a triple composite structure in the pipe material, which synergistically enhances each other, and the first adhesive resin layer 2 and the second adhesive resin layer 4 play a role in composite bonding, which can composite bond the triple structure and form a whole with a gradient. Specifically, the skeleton layer 3 is arranged outside the inner layer 1, the first adhesive resin layer 2 is arranged between the inner layer 1 and the skeleton layer 3 and bonds the inner layer 1 and the skeleton layer 3. The braided outer layer 5 is arranged outside the skeleton layer 3, and the second adhesive resin layer 4 is arranged between the skeleton layer 3 and the braided outer layer 5 and bonds the skeleton layer 3 and the braided outer layer 5.

[0024] In the embodiment, the inner layer 1 is a high-density polyethylene layer. The high-density polyethylene has certain corrosion resistance to acid, alkali, and salt, and has higher tensile strength, hardness, and creep resistance than low-density polyethylene, which can further improve the comprehensive strength performance of the pipe material. Specifically, the inner layer 1 can be made of PE100 grade high-density polyethylene.

[0025] The skeleton layer 3 is located in the middle of the pipe material and mainly plays a role in reinforcing the whole pipe, which can improve the compression resistance and strength performance of the pipe. In the embodiment, the skeleton layer 3 includes a steel belt 31, which is wound around the outer periphery of the first adhesive resin layer 2 to form the skeleton layer 3 and can play a role in compression resistance and support. The width of the steel belt is 1.2-1.8 cm, and a steel belt with a width of 1.5 cm can be generally used. The skeleton layer 3 formed by the steel belt 31 has higher strength performance than the steel wire layer and can further improve the overall compression resistance.

[0026] Referring to Figure 1 , Figure 2As shown, the steel strips 31 of the skeleton layer 3 form helical gap grooves 32 between the steel strips 31 after helical crosstalk winding, the second bonding resin layer 4 forms an embedded part on the inner side, the embedded part is embedded into the gap grooves 32 between the steel strips, and is connected with the first bonding resin layer 2 (the embedded part is not shown in the figure). The first bonding resin layer 2 and the second bonding resin layer 4 can be connected through the embedded part on the inner side of the second bonding resin layer 4, and further can make the first bonding resin layer 2 and the second bonding resin layer 4 combine forces with each other, so as to improve the strength and stability of the entire pipe. In addition, the edges of the steel strips 31 form a sawtooth structure, one side edge forms a sawtooth groove 33, and the other side edge forms a straight edge 34. Even during the helical winding of the steel strips 31, the sawtooth groove 33 can always ensure that a gap is formed at the winding position of the steel strips 31, so as to ensure that the first bonding resin layer 2 and the second bonding resin layer 4 can be bonded. In addition, the sawtooth groove 33 can increase the contact area between the steel strips and the first bonding resin layer 2 and the second bonding resin layer 4, and can embed the steel strips into the resin layers on the two sides of the inner side respectively, so as to improve the connection strength performance.

[0027] The woven outer layer 5 is located at the outermost side of the pipe and plays a role of outer protection. In the embodiment, the woven outer layer 5 is a carbon fiber woven outer layer, which can further increase the tensile resistance, compression resistance, torsion resistance and other properties of the pipe, and increase the overall strength of the pipe.

[0028] Further, the woven outer layer 5 is a double-layer carbon fiber woven outer layer, which increases the weaving density of the carbon fibers and forms double-layer covering protection. Specifically, the double-layer carbon fiber woven outer layer can adopt a ±30° asymmetric double-layer weaving structure.

[0029] The above only describes preferred embodiments of the present application, and the protection scope of the present application is not limited to the above-described embodiments. Any technical solutions falling within the concept of the present application shall fall within the protection scope of the present application. It should be noted that, for ordinary skilled persons in the technical field, some improvements and decorations without departing from the principles of the present application shall also be considered as falling within the protection scope of the present application.

Claims

1. A high-pressure resistant carbon fiber-polyethylene composite steel strip reinforced pipe, characterized in that, It includes an inner layer (1), a first adhesive resin layer (2), a skeleton layer (3), a second adhesive resin layer (4), and a woven outer layer (5). The skeleton layer (3) is disposed on the outer periphery of the inner layer (1). The first adhesive resin layer (2) is located between the inner layer (1) and the skeleton layer (3) and bonds the inner layer (1) and the skeleton layer (3). The woven outer layer (5) is disposed on the outer periphery of the skeleton layer (3). The second adhesive resin layer (4) is located between the skeleton layer (3) and the woven outer layer (5) and bonds the skeleton layer (3) and the woven outer layer (5).

2. The high-pressure resistant carbon fiber polyethylene composite steel strip reinforced pipe according to claim 1, characterized in that, The inner layer (1) is a high-density polyethylene layer.

3. The high-pressure resistant carbon fiber polyethylene composite steel strip reinforced pipe according to claim 2, characterized in that, The inner layer (1) is made of PE100 grade high-density polyethylene.

4. The high-pressure resistant carbon fiber polyethylene composite steel strip reinforced pipe according to claim 1, characterized in that, The skeleton layer (3) includes a steel strip, which is wound around the outer periphery of the first adhesive resin layer (2) to form the skeleton layer (3).

5. The high-pressure resistant carbon fiber polyethylene composite steel strip reinforced pipe according to claim 4, characterized in that, The width of the steel strip is 1.2-1.8cm.

6. The high-pressure resistant carbon fiber polyethylene composite steel strip reinforced pipe according to claim 1, characterized in that, The woven outer layer (5) is a carbon fiber woven outer layer.

7. The high-pressure resistant carbon fiber polyethylene composite steel strip reinforced pipe according to claim 6, characterized in that, The woven outer layer (5) is a double-layer carbon fiber woven outer layer.

8. The high-pressure resistant carbon fiber polyethylene composite steel strip reinforced pipe according to claim 7, characterized in that, The outer woven layer (5) adopts an ±30° asymmetric double-layer woven structure.

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