Enhanced polyethylene PE pipe

Abstract

The utility model relates to the technical field of plastic pipes, and discloses a reinforced polyethylene (PE) pipe which sequentially comprises a PE inner pipe, at least one buffer bonding layer and a PE outer pipe from inside to outside, a steel wire mesh cylinder frame is sleeved on the outer wall of the PE inner pipe, a PE reinforced composite belt is wound on the steel wire mesh cylinder frame, and the buffer bonding layer is used for bonding the PE reinforced composite belt and the PE outer pipe. The problems that in the prior art, an existing PE pipe is relatively low in mechanical strength and prone to being damaged artificially in the laying process or after laying are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic pipes, in particular to a reinforced polyethylene (PE) pipe. Background Art

[0002] PE pipe is lightweight, corrosion-resistant, and generally has a service life of 50 years, requiring no corrosion protection. PE pipe can easily bypass or circumvent obstacles by utilizing its natural curvature, making it well-suited for installation in urban areas with numerous underground pipelines and obstacles.

[0003] However, while various modifiers can be added to current PE pipes, their mechanical properties, aging resistance, stability, and deformation resistance still lag significantly behind those of steel. When using PE pipes to transport pressurized fluids, the pipe wall thickness must be increased, which increases the cost. Furthermore, PE pipes have relatively low mechanical strength and are susceptible to damage during or after installation. For example, external forces such as impact or squeezing from sharp objects during handling or after installation can cause pipe breakage or cracks. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide a reinforced polyethylene (PE) pipe to solve the problem that the existing PE pipe in the prior art has relatively low mechanical strength and is easily damaged by human beings during or after laying.

[0005] The utility model solves the above technical problems through the following technical means: a reinforced polyethylene (PE) pipe, which comprises, from the inside to the outside, a PE inner pipe, at least one buffer adhesive layer and a PE outer pipe. The outer wall of the PE inner pipe is sheathed with a steel mesh drum frame, and a PE reinforced composite tape is wound on the steel mesh drum frame. The buffer adhesive layer is used to bond the PE reinforced composite tape and the PE outer pipe.

[0006] Optionally, an outer corrugation made of a blended PE material is welded onto the outer wall of the PE outer tube. The outer corrugation is used to disperse the impact on the tube, and the blended PE material is used to improve the rigidity of the outer tube.

[0007] Optionally, the wire mesh drum frame is a stainless steel wire mesh drum frame. The stainless steel wire mesh drum frame increases the strength of the pipe. At the same time, stainless steel is corrosion-resistant and has a long service life.

[0008] Optionally, the outer wall of the wire mesh drum is coated with a rubber layer, which improves the adhesion performance of the wire mesh drum.

[0009] Optionally, the buffer adhesive layer comprises two layers of foamed polyethylene: one layer is welded between the outer wall of the PE inner tube and the steel mesh drum, and the other layer is welded between the PE reinforced composite tape and the PE outer tube. The foamed polyethylene layer allows the steel mesh drum to fit more tightly around the PE inner tube, filling any gaps in the steel mesh drum and providing a certain degree of cushioning.

[0010] Optionally, the PE reinforced composite tape is a glass fiber reinforced PE composite tape, which further enhances the mechanical strength of the pipe and can still cooperate with the wire mesh drum rack to well protect the inner pipe in extreme cases when the outer pipe is damaged.

[0011] Beneficial effects of the utility model:

[0012] This new design significantly increases the mechanical strength of the entire pipe by installing a wire mesh drum outside the PE inner pipe, wrapping the drum with PE reinforced composite tape, and applying external corrugations to the outer wall of the outer pipe. The resulting three-layer strength-enhancing structure significantly enhances the mechanical strength of the entire pipe. Furthermore, the inclusion of a foamed polyethylene layer allows the drum to fit more tightly around the PE inner pipe, filling any gaps in the drum and providing a certain cushioning effect. This results in a pipe that is both rigid and flexible, offering both impact resistance and mechanical strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 It is a side view of the utility model;

[0015] Figure 3 It is a cross-sectional view of the present utility model;

[0016] Figure 4 yes Figure 3 A partial enlarged schematic diagram of point M in the middle.

[0017] Among them, 1-PE inner tube, 2-buffer adhesive layer, 21-wire mesh drum frame, 22-PE reinforced composite belt, 23-foamed polyethylene layer, 3-PE outer tube, 31-outer corrugation. DETAILED DESCRIPTION

[0018] The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the content disclosed in this specification. It should be noted that the illustrations provided in the following embodiments are for illustrative purposes only and are only schematic diagrams, not actual drawings. They should not be understood as limiting the present invention. In order to better illustrate the embodiments of the present invention, some parts in the figures may be omitted, enlarged or reduced, and do not represent the dimensions of the actual product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the figures.

[0019] The same or similar numbers in the figures of the embodiments of the present invention correspond to the same or similar parts. In the description of the present invention, it should be understood that if the terms "up", "down", "left", "right", "front", "back", etc. indicate directions or positional relationships, they are based on the directions or positional relationships shown in the figures. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the figures are only used for illustrative purposes and cannot be understood as limitations on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0020] like Figures 1-4 As shown, this is an enhanced polyethylene (PE) pipe of the present invention, which comprises, from the inside to the outside, a PE inner pipe 1, at least one buffer adhesive layer 2 and a PE outer pipe 3. A steel mesh drum frame 21 is sleeved on the outer wall of the PE inner pipe 1, and a PE reinforced composite tape 22 is wrapped around the steel mesh drum frame 21. The buffer adhesive layer 2 is used to bond the PE reinforced composite tape 22 to the PE outer pipe 3.

[0021] In this embodiment, the outer wall of the PE outer tube 3 is welded with outer corrugations 31 made of a blended PE material. The blended PE material is preferably polyethylene-polyvinyl chloride (MPVE), a common and cost-effective raw material for corrugated tubes. Furthermore, the outer corrugations 31 can be hollow, which not only reduces raw material usage but also provides a cushioning effect that further protects the tube body.

[0022] In this embodiment, the wire mesh drum frame 21 is a stainless steel wire mesh drum frame. The stainless steel wire mesh drum frame increases the strength of the pipe. Furthermore, stainless steel is corrosion-resistant and has a long service life. The wire mesh drum frame 21 can be placed in close contact with the outer surface of the PE inner pipe 1 or embedded in the outer surface of the buffer adhesive layer 2.

[0023] In this embodiment, the outer wall of the wire mesh drum frame 21 is coated with a rubber layer. The rubber layer improves the adhesion of the wire mesh drum frame and facilitates heat welding with adjacent structures.

[0024] In this embodiment, the buffer adhesive layer 2 comprises two layers of foamed polyethylene 23: one layer is welded between the outer wall of the PE inner tube 1 and the steel mesh drum 21, and the other layer is welded between the PE reinforced composite tape 22 and the PE outer tube 3. The provision of the foamed polyethylene layer 23 allows the steel mesh drum 21 to fit more tightly onto the PE inner tube, reducing the difficulty of fitting the steel mesh drum 21. The foamed polyethylene layer 23 also fills the gaps in the steel mesh drum 21 and provides a certain buffering effect. It is important to note that the foamed polyethylene layer 23 should be of a low-foaming grade to avoid excessive looseness.

[0025] In this embodiment, the PE reinforced composite tape 22 is a glass fiber reinforced PE composite tape, which further enhances the mechanical strength of the pipe. In extreme cases, even if the outer pipe is damaged, it can still effectively protect the inner pipe. The glass fiber reinforced PE composite tape wrapped around the wire mesh drum frame 21 can also provide a certain flame retardant effect.

[0026] The working principle of this utility model is as follows:

[0027] When in use, the hollow outer corrugation 31 structure provides the first layer of protection and buffering, the wire mesh drum frame 21 and the PE reinforced composite belt 22 ensure the rigidity of the pipe, and cooperate with the two layers of foamed polyethylene 23 to provide the second and third layers of protection and buffering.

[0028] This reinforced polyethylene (PE) pipe features a wire mesh drum frame 21 mounted on the outer surface of a PE inner pipe 1. This is wrapped with a PE reinforcing composite tape 22, and external corrugations 31 are applied to the outer wall of the PE outer pipe 3. This triple-layer strength-enhancing structure significantly increases the mechanical strength of the entire pipe. Furthermore, the inclusion of a foamed polyethylene layer 23 allows the wire mesh drum frame 21 to fit more tightly around the PE inner pipe 1, filling any gaps in the frame frame and providing a certain cushioning effect. This results in a pipe that is both rigid and flexible, offering both impact resistance and mechanical strength.

[0029] The above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and such modifications or equivalent substitutions shall be encompassed by the claims of the present invention. The techniques, shapes, and structural portions not described in detail in the present invention are well known.

Claims

1. A reinforced polyethylene (PE) pipe, characterized by: From the inside to the outside, the invention comprises a PE inner tube (1), at least one buffer adhesive layer (2) and a PE outer tube (3). The outer wall of the PE inner tube (1) is sheathed with a steel wire mesh drum frame (21). A PE reinforced composite tape (22) is wound around the steel wire mesh drum frame (21). The buffer adhesive layer (2) is used to bond the PE reinforced composite tape (22) and the PE outer tube (3).

2. The reinforced polyethylene (PE) pipe according to claim 1, characterized in that: The outer wall of the PE outer tube (3) is welded with outer corrugations (31) made of a blended PE material.

3. The reinforced polyethylene (PE) pipe according to claim 1, characterized in that: The wire mesh drum frame (21) is a stainless steel wire mesh drum frame.

4. The reinforced polyethylene (PE) pipe according to claim 1, characterized in that: The outer wall of the wire mesh drum frame (21) is coated with a rubber layer.

5. The reinforced polyethylene (PE) pipe according to claim 1, characterized in that: The buffer adhesive layer comprises two foamed polyethylene layers (23), one foamed polyethylene layer (23) being welded between the outer wall of the PE inner tube (1) and the wire mesh drum frame (21), and the other foamed polyethylene layer (23) being welded between the PE reinforced composite tape (22) and the PE outer tube (3).

6. The reinforced polyethylene (PE) pipe according to claim 1, characterized in that: The PE reinforced composite tape (22) is a glass fiber reinforced PE composite tape.

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