Winding pipe with compression-resistant hollow structure wall

Abstract

The winding pipe with the compression-resistant hollow structure wall comprises an inner-layer pipe wall and an outer-layer pipe wall, the outer-layer pipe wall is tightly attached to the outer side of the inner-layer pipe wall, the inner-layer pipe wall comprises a pipe wall sectional material of a hollow structure, the inner-layer pipe wall is formed in the mode that the pipe wall sectional material is spirally wound, an embedded groove is formed in the pipe wall sectional material, and the embedded groove is formed in the outer-layer pipe wall. After the pipe wall profile is spirally wound, the embedded groove also spirally extends along the outer surface of the inner-layer pipe wall, so that when the connecting layer is attached to the inner-layer pipe wall, the embedded groove can be well filled with the connecting layer to form clamping connection, and the connecting strength of the outer-layer pipe wall and the inner-layer pipe wall can be improved; and the embedded groove is integrally formed in the pipe wall profile, so that the step of additionally machining the inner-layer pipe wall can be omitted, the production difficulty is reduced, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pipes, in particular to a winding pipe with a compressive hollow structural wall. Background Art

[0002] In the modern industrial and construction fields, as a carrier for transporting fluids, gases or other media, the performance and stability of the pipeline system are crucial. As an important type of pipeline, winding pipes are widely used in urban water supply, drainage, agricultural irrigation, oilfield transportation and other fields due to their flexibility, easy installation and durability.

[0003] Among the existing winding pipes, reference can be made to a pipe structure with better compressive performance disclosed in a Chinese utility model patent with the patent application number 202320736482.1, which includes a winding pipe and a fiberglass resin layer. The inner surface of the winding pipe is provided with embossments, the fiberglass resin layer is connected to the inner surface of the winding pipe, the outer surface of the fiberglass resin layer is embedded in the embossments, and the fiberglass resin layer contains chopped fibers. The inner surface of the winding pipe is connected with a fiberglass resin layer, which can increase the internal performance of the pipe. It has strong compressive capacity, good anti-seepage performance, acid and alkali resistance and corrosion resistance. Moreover, the inner surface of the fiberglass resin layer is smoother, which can reduce the friction with the medium. At the same time, the short fibers in the fiberglass resin layer can increase the transverse strength of the fiberglass resin layer.

[0004] However, in the above structure, in order to improve the connection strength between the fiberglass resin layer and the outer surface of the winding pipe, it is necessary to set embossments on the inner surface of the winding pipe. However, this process of setting embossments usually requires other processing equipment for processing, so it will lead to an increase in the production steps of the pipe, an increase in the production difficulty, and thus an increase in the production cost. Summary of the Utility Model

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a winding pipe with a compressive hollow structural wall.

[0006] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0007] The winding pipe with a compressive hollow structural wall includes an inner layer pipe wall and an outer layer pipe wall. The outer layer pipe wall is closely attached to the outside of the inner layer pipe wall. The inner layer pipe wall includes a pipe wall profile with a hollow structure. An integrally formed embedding groove is provided on the outer wall of the pipe wall profile. The pipe wall profile spirally extends along the cross-section direction and is wound in sequence to form the inner layer pipe wall. The embedding groove spirally extends around the outer surface of the inner layer pipe wall. The outer layer pipe wall includes a connection layer, a strengthening layer and a protective layer from the inside to the outside. The connection layer is closely attached to the inner layer pipe wall and is embedded in the embedding groove to form a clamping connection. The strengthening layer wraps the connection layer, and the protective layer covers the strengthening layer.

[0008] In this utility model, the connecting layer is made of fiberglass reinforced plastic, and the fiberglass reinforced plastic is attached to the inner wall of the inner layer by means of compression molding and filled in the embedding groove.

[0009] Furthermore, the reinforcing layer is a fiberglass mesh cloth, and the fiberglass mesh cloth is wrapped outside the fiberglass reinforced plastic.

[0010] Furthermore, the protective layer is a polyethylene layer, and the polyethylene layer covers and wraps the fiberglass mesh cloth. The polyethylene layer is wrapped outside the reinforcing layer by means of the heat shrinkable sleeve wrapping method.

[0011] In this utility model, a plurality of vertical supporting inner bones are provided in the pipe wall profile. The supporting inner bones support between the inner wall and the outer wall of the pipe wall profile. When the pipe wall profile is helically wound around the profile pipe wall in the cross-sectional direction, the supporting inner bones form helically wound supporting ribs inside the pipe wall profile.

[0012] Furthermore, the thickness of the supporting inner bone is the same as the wall thickness of the pipe wall profile.

[0013] Furthermore, the embedding groove is formed by the outer wall of the pipe wall profile extending inwards and recessing. The supporting inner bone is connected between the bottom edge of the groove of the embedding groove and the inner wall of the pipe wall profile.

[0014] This utility model has the following advantages and beneficial effects:

[0015] The inner layer of the pipe wall is formed by helically winding the pipe wall profile, and an embedding groove is provided on the pipe wall profile. When the pipe wall profile is helically wound, the embedding groove also spirally extends along the outer surface of the inner layer of the pipe wall. Therefore, when the connecting layer is attached to the inner layer of the pipe wall, it can be well filled in the embedding groove to form a clamping connection. In this way, the connection strength between the outer layer of the pipe wall and the inner layer of the pipe wall can be improved, and forming the embedding groove integrally on the pipe wall profile can save the steps of additional processing required for the inner layer of the pipe wall, thereby reducing the production difficulty and production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following further describes this utility model in conjunction with the drawings and embodiments:

[0017] Figure 1 It is a schematic structural diagram of the winding pipe in this embodiment;

[0018] Figure 2 It is a connection structure diagram of the outer layer of the pipe wall and the inner layer of the pipe wall in this embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. The present utility model is not limited to the following embodiments.

[0020] It should be noted that if there are directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship, movement conditions, etc. between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0021] In addition, if there are descriptions involving "first" or "second" in the embodiments of the present utility model, the descriptions of "first" or "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments may be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0022] Such as Figures 1 to 2As shown in the figure, this embodiment discloses a winding pipe with a compressive hollow structural wall, which includes an inner wall pipe 1 and an outer wall pipe 2. The outer wall pipe 2 is closely attached to the outside of the inner wall pipe 1. The inner wall pipe 1 includes a pipe wall profile 10 with a hollow structure. An embedding groove 11 is provided on the outer wall of the pipe wall profile 10. The embedding groove 11 is integrally formed with the pipe wall profile 10. The pipe wall profile 10 spirally extends along the cross-section direction and is wound in sequence to form the inner wall pipe 1, and the embedding groove 11 spirally surrounds and extends along the outer surface of the inner wall pipe 1. The outer wall pipe 2 sequentially includes a connection layer 21, a strengthening layer 22, and a protection layer 23 from the inside to the outside. The connection layer 21 is closely attached to the inner wall pipe 1 and is embedded in the embedding groove 11 to form a clamping connection. The strengthening layer 22 wraps the connection layer 21, and the protection layer 23 covers the strengthening layer 22. The inner wall pipe 1 is formed by spirally winding the pipe wall profile 10, and the embedding groove 11 is provided on the pipe wall profile 10. When the pipe wall profile 10 is spirally wound, the embedding groove 11 also spirally extends along the outer surface of the inner wall pipe 1. Therefore, when the connection layer 21 is attached to the inner wall pipe 1, it can be well filled in the embedding groove 11 to form a clamping connection, which can improve the connection strength between the outer wall pipe 2 and the inner wall pipe 1. And integrally forming the embedding groove 11 on the pipe wall profile 10 can save the steps of additional processing on the inner wall pipe 1, thereby reducing the production difficulty and production cost.

[0023] In this embodiment, the connection layer 21 is made of fiberglass. The fiberglass composite material is formed by mixing glass fibers and resin in a certain proportion. Then, the mixed fiberglass composite material is put into a mold and attached to the inner wall pipe 1 by means of compression molding, and is filled in the embedding groove 11. The strengthening layer 22 is made of fiberglass mesh cloth. The fiberglass mesh cloth is wrapped on the outside of the fiberglass. The fiberglass mesh cloth is woven from high-strength, corrosion-resistant, and high-temperature-resistant glass fiber yarns, and has a very high tensile strength, which can effectively enhance the strength and stability of the pipeline. In addition, the mesh structure can evenly disperse external forces and avoid stress concentration, thereby preventing the pipeline from being damaged or deformed due to external forces. The protection layer 23 is a polyethylene layer. The polyethylene layer covers and wraps the fiberglass mesh cloth. The polyethylene layer is wrapped on the outside of the strengthening layer 22 by means of heat shrinkable sleeve wrapping. First, the heat shrinkable sleeve is put on the pipeline, and then a special heating tool is used to heat the heat shrinkable sleeve to make it shrink and tightly wrap on the pipe wall. Polyethylene is a thermoplastic plastic with excellent chemical stability, electrical insulation, and good radiation resistance. At the same time, it also has anti-cracking and sufficient extensibility, and can effectively serve as the protection layer and anti-corrosion layer of the pipeline.

[0024] In this embodiment, in order to improve the compressive resistance of the pipe wall, a plurality of vertical supporting inner bones 12 are provided in the pipe wall profile 10. The supporting inner bones 12 are supported between the inner wall and the outer wall of the pipe wall profile 10. When the pipe wall profile 10 is helically wound around the pipe wall in the cross-sectional direction, the supporting inner bones 12 form helically wound supporting ribs inside the pipe wall profile 10. Preferably, the thickness of the supporting inner bones 12 is the same as that of the pipe wall profile 10.

[0025] Furthermore, an embedding groove 11 is formed by recessing and extending inward on the outer wall of the pipe wall profile 10. In order to prevent the structure of the embedding groove 11 from deforming, the supporting inner bone 12 is connected between the bottom edge of the groove of the embedding groove 11 and the inner wall of the pipe wall profile 10. By supporting the bottom of the embedding groove 11 with the supporting inner bone 12, not only can the structural stability of the embedding groove 11 be ensured, but also the compressive resistance of the pipe wall profile 10 can be improved.

[0026] What is described above in this specification is only an example of the present invention. Those skilled in the technical field to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, as long as they do not deviate from the content of this specification of the present invention or exceed the scope defined by this claim book, they should all fall within the protection scope of the present invention.

Claims

1. The winding pipe with a compression-resistant hollow structural wall comprises an inner layer pipe wall (1) and an outer layer pipe wall (2), and the outer layer pipe wall (2) is closely attached to the outer side of the inner layer pipe wall (1), and is characterized in that: The inner pipe wall (1) includes a pipe wall profile (10) with a hollow structure. An integrally formed embedding groove (11) is provided on the outer wall of the pipe wall profile (10). The pipe wall profile (10) spirally extends in the cross-sectional direction and is wound in sequence to form the inner pipe wall (1). The embedding groove (11) spirally extends around the outer surface of the inner pipe wall (1). The outer pipe wall (2) sequentially includes a connection layer (21), a strengthening layer (22), and a protective layer (23) from the inside out. The connection layer (21) is closely attached to the inner pipe wall (1) and is embedded in the embedding groove (11) to form a clamping connection. The strengthening layer (22) wraps the connection layer (21), and the protective layer (23) covers the strengthening layer (22).

2. The wound pipe with a compressive hollow structure wall according to claim 1, characterized in that: The connection layer (21) is made of fiberglass reinforced plastic. The fiberglass reinforced plastic is attached to the inner pipe wall (1) by a compression molding method and fills the embedding groove (11).

3. The winding pipe with a compressive hollow structural wall according to claim 2, characterized in that: The strengthening layer (22) is a fiberglass mesh cloth. The fiberglass mesh cloth wraps the outside of the fiberglass reinforced plastic.

4. The winding pipe with a compressive hollow structural wall according to claim 3, characterized in that: The protective layer (23) is a polyethylene layer. The polyethylene layer covers and wraps the fiberglass mesh cloth. The polyethylene layer is wrapped outside the strengthening layer (22) by a heat shrinkable sleeve wrapping method.

5. The winding pipe with a compression-resistant hollow structural wall according to claim 1, wherein: A plurality of vertical support inner bones (12) are provided in the pipe wall profile (10). The support inner bones (12) support between the inner wall and the outer wall of the pipe wall profile (10). When the pipe wall profile (10) spirally winds the profile pipe wall in the cross-sectional direction, the support inner bones (12) form spiral winding support ribs inside the pipe wall profile (10).

6. The winding pipe with a compressive hollow structure wall according to claim 5, characterized in that: The thickness of the support inner bone (12) is the same as the wall thickness of the pipe wall profile (10).

7. The winding pipe with a compressive hollow structure wall according to claim 5, characterized in that: The embedding groove (11) is formed by the outer wall of the pipe wall profile (10) extending inwards in a concave manner. The support inner bone (12) is connected between the bottom edge of the groove of the embedding groove (11) and the inner wall of the pipe wall profile (10).

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