High-performance grid framework PE composite pipe

Abstract

The utility model discloses a high-performance grid framework PE composite pipe which comprises a core pipe, the surface of the core pipe is coated with a hot melt adhesive inner layer, the surface of the core pipe is coated with a steel wire mesh layer soaked in the hot melt adhesive inner layer, the outer portion of the steel wire mesh layer is coated with a hot melt adhesive outer layer, and the outer portion of the hot melt adhesive outer layer is provided with a protective outer sleeve connected to the outer portion of the steel wire mesh layer in a sleeved mode. The steel wire mesh layer comprises supporting ribs and tie bars, the supporting ribs and the tie bars are integrally spiral and alternately arranged, the supporting ribs and the tie bars comprise positive spirals and negative spirals, the supporting ribs and the tie bars are welded in a crossed mode, the tie bars are round steel bars, and the supporting ribs are flat steel bars. The supporting ribs and the tie bars of the steel wire mesh layer are arranged to be different in shape and size, the supporting strength in the circumferential direction is improved through the supporting ribs with the larger size, mutual connection and mutual pulling and restraining in the axial direction and the circumferential direction are formed through the supporting ribs and the tie bars which are alternately arranged in a positive spiral and negative spiral crossed mode, the tensile strength is improved, and the service life of the steel wire mesh layer is prolonged. Mutual connection and supporting are achieved, and the pressure bearing effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of PE pipes, and specifically relates to a high-performance grid skeleton PE composite pipe. Background Technique

[0002] The steel wire mesh skeleton polyethylene composite pipe is a pressure-bearing pipe. Due to its unique structure, the steel skeleton plastic composite pipe combines the advantages of steel and thermoplastic plastics, and also determines the excellent performance characteristics of the steel skeleton plastic composite pipe.

[0003] Since plastics will creep at normal temperature and under stress, and brittle fracture will occur under high persistent stress, the allowable stress and bearing capacity of pure plastic pipes are very low (generally within 1.0 Mpa). The mechanical strength of steel is about 10 times that of thermoplastic plastics, and it is very stable within the service temperature range of plastics and does not creep. After the net-shaped steel skeleton is combined with plastics, the steel skeleton can effectively restrain the creep of plastics, greatly improving the persistent strength of plastics itself. With the continuous expansion of market demand and the continuous improvement of process requirements, in order to further improve the pressure-bearing effect of pipes, our company has designed and proposed a high-performance grid skeleton PE composite pipe with an optimized structure. Content of the Utility Model

[0004] Aiming at the deficiencies existing in the prior art, the utility model provides a high-performance grid skeleton PE composite pipe, which is used to further improve the pressure-bearing effect on the basis of the existing steel wire mesh skeleton PE composite pipe.

[0005] To solve the above technical problems, the utility model provides the following technical solutions:

[0006] A high-performance grid skeleton PE composite pipe includes a core pipe. A hot melt adhesive inner layer is coated on the surface of the core pipe. A steel wire mesh layer immersed in the hot melt adhesive inner layer is covered on the surface of the core pipe. A hot melt adhesive outer layer is coated outside the steel wire mesh layer. A protective outer sleeve sleeved outside the steel wire mesh layer is arranged outside the hot melt adhesive outer layer;

[0007] The steel wire mesh layer includes support ribs and tension ribs that are integrally spiral and arranged alternately. Both the support ribs and the tension ribs include positive spirals and reverse spirals. The support ribs and the tension ribs are cross-welded to each other, and the tension ribs are round steel bars, and the support ribs are flat steel bars.

[0008] Preferably, both the core pipe and the protective outer sleeve are polyethylene pipes.

[0009] Preferably, the core pipe is a low-density polyethylene pipe, and the protective outer sleeve is a high-density polyethylene pipe.

[0010] Preferably, the steel wire mesh layer is located between the inner hot melt adhesive layer and the outer hot melt adhesive layer, and neither the core pipe nor the protective outer sleeve contacts the steel wire mesh layer.

[0011] Preferably, the wall thickness of the core pipe is less than that of the protective outer sleeve, and the overall thickness of the inner hot melt adhesive layer and the outer hot melt adhesive layer is less than the wall thickness of the core pipe.

[0012] Preferably, the support ribs and tension ribs of the positive helix are parallel to each other, and the support ribs and tension ribs of the negative helix are also parallel to each other, and the support ribs and tension ribs of the positive helix are respectively perpendicular to the support ribs and tension ribs of the negative helix.

[0013] Preferably, the diameter of the support ribs is greater than that of the tension ribs, and the width of the support ribs is greater than the diameter.

[0014] Compared with the prior art, the present utility model has the following beneficial effects:

[0015] By setting the support ribs and tension ribs of the steel wire mesh layer into different shapes and sizes, the present utility model improves the circumferential support strength through the support ribs with larger sizes, and forms axial and circumferential interconnections, mutual pulling and restraint through the alternately arranged, positive helix and negative helix cross - arranged support ribs and tension ribs, thereby improving the tensile strength and the pressure - bearing effect through mutual connection and support. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 is the present utility model Figure 1 cross - sectional view taken along line A - A in.

[0018] In the figure: 1, core pipe; 2, inner hot melt adhesive layer; 3, steel wire mesh layer; 31, support rib; 32, tension rib; 4, outer hot melt adhesive layer; 5, protective outer sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] Such as Figure 1-2As shown in the figure, the utility model provides a technical solution: a high-performance grid skeleton PE composite pipe, which includes a core pipe 1. A hot melt adhesive inner layer 2 is coated on the surface of the core pipe 1. A steel wire mesh layer 3 immersed in the hot melt adhesive inner layer 2 is covered on the surface of the core pipe 1. A hot melt adhesive outer layer 4 is coated outside the steel wire mesh layer 3. A protective outer sleeve 5 sleeved outside the steel wire mesh layer 3 is arranged outside the hot melt adhesive outer layer 4;

[0021] The wall thickness of the core pipe 1 is less than that of the protective outer sleeve 5. The overall thickness of the hot melt adhesive inner layer 2 and the hot melt adhesive outer layer 4 is less than the wall thickness of the core pipe 1. While ensuring the overall structural strength of the pipeline, the adaptability of the pipeline to bending deformation is improved. Both the core pipe 1 and the protective outer sleeve 5 are polyethylene pipes. The core pipe 1 is a low-density polyethylene pipe, and the protective outer sleeve 5 is a high-density polyethylene pipe. If the pipeline bends, the low-density polyethylene core pipe 1 has more elasticity to adapt to the deformation under the bending extrusion on the inner side;

[0022] The steel wire mesh layer 3 includes support ribs 31 and tension ribs 32 that are integrally spiral and alternately arranged. Both the support ribs 31 and the tension ribs 32 include positive spirals and reverse spirals. The support ribs 31 and the tension ribs 32 are cross-welded to each other, and the tension ribs 32 are round steel bars, and the support ribs 31 are flat steel bars;

[0023] The positive spiral support ribs 31 and tension ribs 32 are parallel to each other, and the reverse spiral support ribs 31 and tension ribs 32 are also parallel to each other. And the positive spiral support ribs 31 and tension ribs 32 are respectively perpendicular to the reverse spiral support ribs 31 and tension ribs 32, improving the structural support strength in the circumferential direction of the pipeline and the anti-tensile effect in the axial direction of the pipeline. The thickness of the support ribs 31 is greater than the diameter of the tension ribs 32, and the width of the support ribs 31 is greater than the thickness, ensuring sufficient supporting force;

[0024] The steel wire mesh layer 3 is located between the hot melt adhesive inner layer 2 and the hot melt adhesive outer layer 4, and neither the core pipe 1 nor the protective outer sleeve 5 is in contact with the steel wire mesh layer 3. It is completely covered by the hot melt adhesive inner layer 2 and the hot melt adhesive outer layer 4, which is beneficial to isolate oxygen and avoid rust.

[0025] It should be noted that in this article, terms such as "including", "comprising" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to this process, method, article or device.

[0026] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-performance grid skeleton PE composite pipe, characterized in that: It includes a core pipe (1), on the surface of the core pipe (1) there is a hot melt adhesive inner layer (2) coated, on the surface of the core pipe (1) there is a steel wire mesh layer (3) immersed in the hot melt adhesive inner layer (2), on the outside of the steel wire mesh layer (3) there is a hot melt adhesive outer layer (4) coated, and outside the hot melt adhesive outer layer (4) there is a protective outer sleeve (5) sleeved on the outside of the steel wire mesh layer (3); The steel wire mesh layer (3) includes support ribs (31) and tension ribs (32) that are integrally spiral and arranged alternately. Both the support ribs (31) and the tension ribs (32) include right-handed spirals and left-handed spirals. The support ribs (31) and the tension ribs (32) are cross-welded to each other, and the tension ribs (32) are round steel bars, and the support ribs (31) are flat steel bars.

2. The high-performance grid skeleton PE composite pipe according to claim 1, wherein: Both the core pipe (1) and the protective outer sleeve (5) are polyethylene pipes.

3. The high-performance grid skeleton PE composite pipe according to claim 2, wherein: The core pipe (1) is a low-density polyethylene pipe, and the protective outer sleeve (5) is a high-density polyethylene pipe.

4. A high-performance grid skeleton PE composite pipe according to claim 1, characterized in that: The steel wire mesh layer (3) is located between the hot melt adhesive inner layer (2) and the hot melt adhesive outer layer (4), and neither the core pipe (1) nor the protective outer sleeve (5) is in contact with the steel wire mesh layer (3).

5. A high-performance grid skeleton PE composite pipe according to claim 1, characterized in that: The wall thickness of the core pipe (1) is less than the wall thickness of the protective outer sleeve (5), and the overall thickness of the hot melt adhesive inner layer (2) and the hot melt adhesive outer layer (4) is less than the wall thickness of the core pipe (1).

6. The high-performance grid skeleton PE composite pipe according to claim 1, characterized in that: The right-handed support ribs (31) and tension ribs (32) are parallel to each other, and the left-handed support ribs (31) and tension ribs (32) are also parallel to each other, and the right-handed support ribs (31) and tension ribs (32) are respectively perpendicular to the left-handed support ribs (31) and tension ribs (32).

7. The high-performance grid skeleton PE composite pipe according to claim 1, wherein: The thickness of the support ribs (31) is greater than the diameter of the tension ribs (32), and the width of the support ribs (31) is greater than the thickness.

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