Large-diameter high-ring-rigidity steel-plastic composite pipe

Abstract

The utility model discloses a large-caliber high ring steel plastic composite pipe, which relates to the field of steel plastic composite pipe structures, and comprises a composite pipe body, a steel skeleton is embedded in the composite pipe body, the steel skeleton comprises a plurality of support units, the plurality of support units are distributed at equal intervals along the radial direction of the composite pipe body, and the plurality of support units are connected with a plurality of warps in a penetrating manner. The plurality of warps are annularly distributed and are parallel to the central axis of the composite pipe body diameter; each supporting unit comprises a weft ring, a reinforcing ring is coaxially arranged in the weft ring, and warp threads are connected between the weft ring and the reinforcing ring in a penetrating mode; according to the large-diameter high-ring-rigidity steel-plastic composite pipe, through the weft circle and the reinforcing circle which are coaxially arranged, the weft circle and the reinforcing circle between the two connecting points on the same weft circle and the two warps form a supporting whole, then the pressure bearing capacity of the weft circle between the two connecting points is improved, and the pressure bearing capacity and the ring rigidity of the pipe can meet the actual requirements.

Description

Technical Field

[0001] The utility model relates to the field of steel-plastic composite pipe structures, and specifically to a large-diameter high-ring stiffness steel-plastic composite pipe. Background Art

[0002] As an advanced composite material pipe, the steel-plastic composite pipe is a new type of pipe formed by using a steel skeleton as the base pipe and bonding plastic anti-corrosion layers on its inner and outer surfaces.

[0003] As the core part of the steel-plastic composite pipe, the steel skeleton is generally formed by enclosing a circle with multiple warp threads at equal intervals, and then winding a circle of weft threads around the outside. A stable skeleton structure is formed by the combination of the warp threads and the weft threads. This structure endows the steel-plastic composite pipe with good pressure-bearing capacity and ring stiffness performance, enabling it to maintain stable use performance in various harsh environments.

[0004] However, in the production and application of large-diameter steel-plastic composite pipes, due to the large pipe orifice, the distance between two adjacent connection points of the warp thread and the weft thread on the same weft thread is too large, resulting in weak pressure-bearing capacity of the weft thread between the two connection points, and thus the pressure-bearing and ring stiffness performance of the pipe cannot meet the actual requirements. Content of the Utility Model

[0005] The purpose of the utility model is to provide a large-diameter high-ring stiffness steel-plastic composite pipe. Through the coaxially arranged weft thread coil and reinforcing coil, on the same weft thread coil, the weft thread coil and the reinforcing coil between two connection points and two warp threads form a supporting whole, thereby improving the pressure-bearing capacity of the weft thread coil between the two connection points and enabling the pressure-bearing and ring stiffness performance of the pipe to meet the actual requirements.

[0006] The above optimized structure of the utility model is achieved through the following technical solutions: A large-diameter high-ring stiffness steel-plastic composite pipe includes a composite pipe body, and a steel skeleton is embedded in the composite pipe body. The steel skeleton includes a plurality of support units, and the plurality of support units are distributed at equal intervals along the radial direction of the composite pipe body. A plurality of warp threads penetrate and connect the plurality of support units, and the plurality of warp threads are distributed in a ring shape and are parallel to the central axis of the composite pipe body;

[0007] The support unit includes a weft thread coil, and a reinforcing coil is coaxially arranged inside the weft thread coil. The weft thread coil and the reinforcing coil are penetrated and connected by the warp thread.

[0008] In some embodiments, the weft thread coil and the reinforcing coil are in the same plane.

[0009] In some embodiments, the warp thread perpendicularly penetrates the plane.

[0010] In some embodiments, the warp thread is welded and fixed to both the weft thread coil and the reinforcing coil.

[0011] In some embodiments, the warp threads, the weft coils, and the reinforcing rings are all wound with steel wires.

[0012] In some embodiments, the inner wall and the outer wall of the composite pipe body are both made of thermoplastic plastics.

[0013] In some embodiments, a plurality of first limiting grooves are equidistantly arranged on the inner ring wall of the weft coil, and a plurality of second limiting grooves are equidistantly arranged on the outer ring wall of the reinforcing ring. The first limiting grooves and the second limiting grooves are arranged correspondingly, and the warp threads are arranged between the first limiting grooves and the second limiting grooves.

[0014] In some embodiments, the composite pipe body and the steel skeleton are integrally injection-molded.

[0015] In summary, the present utility model has the following beneficial effects:

[0016] Through the coaxially arranged weft coils and reinforcing rings, and by connecting the weft coils and the reinforcing rings with multiple warp threads, in the same weft coil, the weft coil and the reinforcing ring between two connection points and the two warp threads form a supporting whole, thereby improving the pressure-bearing capacity of the weft coil between the two connection points, and enabling the pressure-bearing and ring stiffness performance of the pipe material to meet the actual requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a sectional structure diagram of the present utility model;

[0018] Figure 2 is a front sectional view of the present utility model;

[0019] Figure 3 is the present utility model Figure 2 an enlarged view of part A in.

[0020] In the figure: 1. Composite pipe body; 2. Steel skeleton; 21. Weft coil; 22. Reinforcing ring; 3. Warp thread. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with 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 of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Reference Figures 1-3, A large-diameter high-ring stiffness steel-plastic composite pipe, including a composite pipe body 1. The inner and outer walls of the composite pipe body 1 can be made of thermoplastic plastics, having good corrosion resistance and fluid transportation efficiency. A steel skeleton 2 is embedded in the composite pipe body 1, and the composite pipe body 1 and the steel skeleton 2 are integrally injection-molded, so that the steel skeleton 2 and the plastic layer are closely combined to form a whole, further improving the pressure-bearing and ring stiffness performance of the pipe.

[0023] The steel skeleton 2 includes a plurality of support units. The plurality of support units can be evenly distributed at equal intervals along the radial direction of the composite pipe body 1. The plurality of support units are connected through a plurality of warp threads 3. The plurality of warp threads 3 are annularly distributed and parallel to the central axis of the composite pipe body 1. By connecting the plurality of support units through the plurality of warp threads 3, a stable skeleton structure is formed, so that the pipe meets the actual requirements of pressure-bearing and ring stiffness performance.

[0024] The support unit includes a weft coil 21. A reinforcing ring 22 is coaxially arranged inside the weft coil 21. The weft coil 21 and the reinforcing ring 22 can be in the same plane. Warp threads 3 are connected through the weft coil 21 and the reinforcing ring 22. The warp threads 3 vertically penetrate the plane, so that on the same weft coil 21, the weft coil 21 and the reinforcing ring 22 between two connection points (the connection points of two adjacent warp threads 3 and the weft coil 21) and the two warp threads 3 form a support whole, thereby improving the pressure-bearing capacity of the weft coil 21 between the two connection points and making the pressure-bearing and ring stiffness performance of the pipe meet the actual requirements.

[0025] In some embodiments, the warp threads 3 are welded and fixed to both the weft coil 21 and the reinforcing ring 22. While strengthening the connection strength between the warp threads 3 and the weft coil 21 and the reinforcing ring 22, no additional fixing equipment is added, and the additional weight of the steel-plastic composite pipe is not increased, avoiding the additional pressure on the steel-plastic composite pipe caused by the additional fixing equipment.

[0026] In some embodiments, the warp threads 3, the weft coils 21, and the reinforcing rings 22 can all be made of steel wires wound to enhance the structural strength and stability of the pipe.

[0027] In some embodiments, a plurality of first limiting grooves are evenly arranged on the inner ring wall of the weft coil 21, and a plurality of second limiting grooves are evenly arranged on the outer ring wall of the reinforcing ring 22. The first limiting grooves and the second limiting grooves are arranged correspondingly. Warp threads 3 are arranged between the first limiting grooves and the second limiting grooves. When manufacturing the steel skeleton 2, the warp threads 3 can be pre-positioned on the weft coil 21 and the reinforcing ring 22, which is convenient for welding and fixing. At the same time, the contact area between the warp threads 3 and the weft coil 21 and the reinforcing ring 22 can be increased, thereby increasing the welding area between the warp threads 3 and the weft coil 21 and the reinforcing ring 22, and the distance between the weft coil 21 and the reinforcing ring 22 can be reduced, thus ensuring the stable connection of the warp threads 3 between the weft coil 21 and the reinforcing ring 22.

[0028] The working principle is as follows:

[0029] When the large-diameter high-ring-stiffness steel-plastic composite pipe of the present utility model is subjected to external pressure, the composite pipe body 1 transmits the acting force to the steel skeleton 2, and the steel skeleton 2 can effectively disperse and bear the pressure, preventing the pipe from deforming or cracking.

[0030] Specifically, multiple warp threads 3, multiple weft coils 21 and multiple reinforcing rings 22 in the steel skeleton 2 are connected to each other and are connected into multiple support wholes in the composite pipe body 1. The support whole includes two warp threads 3, the weft coil 21 and the reinforcing ring 22 between the two warp threads 3. The reinforcing ring 22 can share the acting force transmitted to the weft coil 21 and at the same time reduce the acting force at the connection point between the warp thread 3 and the weft coil 21, thereby enhancing the connection strength between the weft coil 21 and the reinforcing ring 22 and the two warp threads 3, improving the structural strength and stability of the composite pipe body 1, and further enhancing the pressure-bearing and ring-stiffness performance of the large-diameter steel-plastic composite pipe to meet the actual requirements of the pressure-bearing and ring-stiffness performance.

[0031] The above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present utility model.

Claims

1. A large-diameter high-ring-steel plastic composite pipe, comprising a composite pipe body (1), wherein a steel skeleton (2) is embedded in the composite pipe body (1), and is characterized in that: The steel skeleton (2) includes a plurality of support units, and the plurality of support units are evenly distributed at equal intervals in the radial direction of the composite pipe body (1). A plurality of warp threads (3) are connected through the plurality of support units. The plurality of warp threads (3) are annularly distributed and parallel to the central axis of the composite pipe body (1). The support unit includes a weft coil (21), and a reinforcing ring (22) is coaxially arranged inside the weft coil (21). The warp thread (3) is connected through between the weft coil (21) and the reinforcing ring (22).

2. A large-diameter high-ring-steel plastic composite pipe according to claim 1, characterized in that: The weft coil (21) and the reinforcing ring (22) are located on the same plane.

3. The large-diameter high-ring-rigidity steel-plastic composite pipe according to claim 2, wherein: The warp thread (3) vertically penetrates through the plane.

4. A large-diameter high-ring-rigidity steel-plastic composite pipe according to claim 1, characterized in that: The warp thread (3) is fixedly welded to both the weft coil (21) and the reinforcing ring (22).

5. A large-diameter high-ring-rigidity steel-plastic composite pipe according to claim 1, characterized in that: The warp thread (3), the weft coil (21), and the reinforcing ring (22) are all wound with steel wires.

6. The large-diameter high-ring-rigidity steel-plastic composite pipe according to claim 1, wherein: The inner wall and the outer wall of the composite pipe body (1) are both composed of thermoplastic plastics.

7. A large-diameter high-ring-rigidity steel-plastic composite pipe according to claim 1, characterized in that: A plurality of first limiting grooves are equidistantly arranged on the inner ring wall of the weft coil (21), and a plurality of second limiting grooves are equidistantly arranged on the outer ring wall of the reinforcing ring (22). The first limiting grooves and the second limiting grooves are correspondingly arranged, and the warp thread (3) is arranged between the first limiting grooves and the second limiting grooves.

8. A large-diameter high-ring-rigidity steel-plastic composite pipe according to claim 1, characterized in that: The composite pipe body (1) and the steel skeleton (2) are integrally injection-molded.

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