Steel fiber reinforced polyethylene composite pressure pipe

Abstract

This utility model discloses a steel fiber reinforced polyethylene composite pressure pipe, relating to the field of pressure pipe technology. It includes an outer pipe and an inner pipe made of polyethylene, with a steel fiber mesh between the outer and inner pipes. A ring-shaped array of buffer strips is fixed to the inner wall of the outer pipe, and a pad pipe is provided between the steel fiber mesh and the outer pipe. The outer surface of the pad pipe has buffer grooves that are misaligned with the buffer strips. This steel fiber reinforced polyethylene composite pressure pipe achieves multi-level energy-dissipating buffering through the mutual compression of the misaligned buffer grooves and buffer strips, significantly reducing pressure impact. An isolation ring moltenly covers the cut surface of the steel fiber mesh, blocking the path of corrosion propagation. An adhesive layer enhances interlayer bonding strength and prevents delamination. Reserved gaps improve deformation compensation capability. The overall structure significantly improves impact resistance and durability while maintaining the toughness of the steel fiber reinforcement.

Description

Technical Field

[0001] This utility model relates to the field of pressure pipe technology, specifically a steel fiber reinforced polyethylene composite pressure pipe. Background Technology

[0002] Existing steel fiber reinforced polyethylene composite pressure pipes improve toughness by setting a steel fiber network between the inner and outer pipes. However, under long-term hydraulic impact, the interlayer stress concentration is prone to delamination. After the steel fiber network is exposed at the cut end, corrosion is prone to spread. Traditional structures lack effective interlayer buffering mechanisms and corrosion blocking designs, which affect the service life of the pipes.

[0003] Therefore, there is an urgent need for a steel fiber reinforced polyethylene composite pressure pipe that can improve toughness, buffer impact, and prevent the spread of internal steel fiber corrosion. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a steel fiber reinforced polyethylene composite pressure pipe, which solves the problems of durability and pressure resistance of traditional pressure pipes. The padding pipe buffers external impact forces, and the isolation ring can prevent the spread of rust on the steel fiber end face.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a steel fiber reinforced polyethylene composite pressure pipe, comprising an outer pipe and an inner pipe made of polyethylene material, wherein a steel fiber mesh is provided between the outer pipe and the inner pipe; a ring array of buffer fixing strips is fixedly connected to the inner wall of the outer pipe, and a pad is provided between the steel fiber mesh and the outer pipe, wherein a buffer groove corresponding to the misalignment of the buffer fixing strip is formed on the outer surface of the pad.

[0006] Furthermore, a deformation buffer gap is reserved between the contact surface of the buffer fixing strip and the buffer groove.

[0007] Furthermore, an adhesion-aiding layer is coated between the pad tube and the outer tube.

[0008] Furthermore: multiple insulating rings are fixed at equal intervals to the inner wall of the gasket, and the insulating rings are fused and coated with steel fiber mesh.

[0009] Furthermore: the axial spacing of the isolation rings is 5-20mm.

[0010] Furthermore, the cross-section of the buffer groove is arc-shaped and its depth is greater than 1 / 3 of the height of the buffer fixing strip.

[0011] Furthermore, the cross-section of the buffer fixing strip has a trapezoidal protruding structure.

[0012] This invention provides a steel fiber reinforced polyethylene composite pressure pipe. Compared with the prior art, it has the following advantages:

[0013] This steel fiber reinforced polyethylene composite pressure pipe achieves multi-level energy-dissipating buffering through the mutual compression of staggered buffer grooves and buffer fixing strips, significantly reducing pressure impact; the isolation ring melt-coats the cut surface of the steel fiber pipe network, blocking the path of corrosion spread; the adhesion-enhancing layer strengthens the interlayer bonding strength and avoids delamination; the reserved gaps improve the deformation compensation capacity; the overall structure significantly improves impact resistance and durability while maintaining the toughness of steel fiber reinforcement. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the unfolded structure of the outer tube and inner tube of this utility model;

[0016] Figure 3 for Figure 1 Enlarged structural diagram at point A;

[0017] Figure 4 for Figure 2 Enlarged structural diagram at point B.

[0018] In the diagram: 1. Outer tube; 2. Inner tube; 3. Steel fiber mesh; 4. Buffer fixing strip; 5. Pad; 6. Buffer groove; 7. Adhesive layer; 8. Isolation ring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4 This utility model provides a technical solution: a steel fiber reinforced polyethylene composite pressure pipe; specifically, it includes an outer pipe 1 and an inner pipe 2, with a steel fiber mesh 3 arranged between the outer pipe 1 and the inner pipe 2. The steel fiber mesh 3 can increase the toughness between the outer pipe 1 and the inner pipe 2. Both the outer pipe 1 and the inner pipe 2 are made of polyethylene composite material, which is existing known technology and will not be described in detail here. A pad pipe 5 is arranged at the support between the outer pipe 1 and the steel fiber mesh 3. A buffer groove 6 is opened on the outer ring surface of the pad pipe 5. A buffer fixing strip 4 is fixed on the inner side wall of the outer pipe 1. The buffer groove 6 and the buffer fixing strip 4 are staggered and corresponding. The pad pipe 5, the buffer groove 6 and the buffer fixing strip 4 can offset the impact force between the outer pipe 1 and the inner pipe 2, and are more durable and flexible under the action of the steel fiber mesh 3. The buffer groove 6 and the buffer fixing strip 4 squeeze each other to generate buffer offset, thereby achieving a buffering effect.

[0021] An isolation ring 8 is fixedly connected to the inner wall of the pad pipe 5. The isolation ring 8 is fused and fixedly connected to the steel fiber mesh 3. This can prevent the surface corrosion spots of the steel fiber mesh 3 from extending when the entire pipe is cut, thereby preventing the internal steel fiber mesh 3 that is not exposed from being affected by corrosion. Multiple isolation rings 8 are set with equal spacing, so that corrosion protection can be provided no matter where the cut is made.

[0022] An adhesive layer 7 is provided at the connection between the outer pipe 1 and the pad pipe 5. The adhesive layer 7 can stably fix the outer pipe 1 and the pad pipe 5 together, thereby preventing delamination between the outer pipe 1 and the pad pipe 5 when bending and externally pressing, improving the overall stability of the pipeline and increasing its durability.

[0023] There is a gap at the connection between the buffer fixing strip 4 and the buffer groove 6. The gap can further improve the buffering effect, thereby enhancing the buffering effect and achieving a better buffering effect.

Claims

1. A steel fiber reinforced polyethylene composite pressure pipe comprising an outer pipe (1) and an inner pipe (2) of polyethylene material, characterized in that: A steel fiber mesh (3) is provided between the outer tube (1) and the inner tube (2); a ring array of buffer fixing strips (4) is fixedly connected to the inner wall of the outer tube (1); a pad tube (5) is provided between the steel fiber mesh (3) and the outer tube (1); and a buffer groove (6) is opened on the outer surface of the pad tube (5) corresponding to the misalignment of the buffer fixing strip (4).

2. The steel fiber reinforced polyethylene composite pressure pipe according to claim 1, characterized in that: A deformation buffer gap is reserved between the contact surfaces of the buffer fixing strip (4) and the buffer groove (6).

3. The steel fiber reinforced polyethylene composite pressure pipe according to claim 2, characterized in that: An adhesive layer (7) is coated between the pad tube (5) and the outer tube (1).

4. The steel fiber reinforced polyethylene composite pressure pipe according to claim 1, characterized in that: Multiple isolation rings (8) are fixed at equal intervals on the inner wall of the pad tube (5), and the isolation rings (8) are fused and coated with steel fiber mesh (3).

5. The steel fiber reinforced polyethylene composite pressure pipe according to claim 4, characterized in that: The axial spacing of the isolation rings (8) is 5-20mm.

6. The steel fiber reinforced polyethylene composite pressure pipe according to claim 1, characterized in that: The cross-section of the buffer groove (6) is arc-shaped and its depth is greater than 1 / 3 of the height of the buffer fixing strip (4).

7. The steel fiber reinforced polyethylene composite pressure pipe according to claim 1, characterized in that: The cross-section of the buffer fixing strip (4) has a trapezoidal protrusion structure.

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