Corrugated pipe with reinforced outer wall

Abstract

The utility model relates to the technical field of corrugated pipes, in particular to a corrugated pipe with a reinforced outer wall. The corrugated pipe sequentially comprises an inner wall and an outer wall from inside to outside, and the outer wall is a corrugated wall with a plurality of protrusions. The outer side of the outer wall further comprises a reinforcing layer, and the reinforcing layer is connected with the multiple protrusions. The reinforcing layer is additionally arranged on the outer side of the outer wall, the reinforcing layer is used for reinforcing and protecting the protrusions, meanwhile, the reinforcing layer is used for connecting the multiple protrusions, when one connected protrusion receives external force, the external force can be transferred downwards and can also be transferred transversely, and therefore the effect of protecting the protrusions is achieved. In other words, external force can be distributed to other connected protrusions through the reinforcing layer, so that the strength of the pipe is enhanced, the corrugated pipe is not prone to large deformation or damage after bearing huge external pressure in a local area, the corrugated pipe can still be normally used, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of corrugated pipes, and more specifically, to a corrugated pipe with a reinforced outer wall. Background Art

[0002] HDPE double-wall corrugated pipe is made from high-density polyethylene (HDPE) and extruded through internal and external extruders. The pipe features a smooth inner wall, a trapezoidal corrugation on the outer wall, and a hollow layer between the inner and outer walls. In addition to the corrosion resistance, high insulation, smooth inner wall, and low flow resistance common to ordinary plastic pipes, HDPE double-wall corrugated pipe also boasts lightweight, impact resistance, and resistance to breakage. Currently, commonly used HDPE double-wall corrugated pipes feature an annular corrugated outer wall, with each corrugation arranged in a sequence with regularly spaced troughs. This results in insufficient overall compressive strength, and both the inner and outer walls are susceptible to damage.

[0003] Prior art discloses an improved corrugated pipe with a non-woven fabric layer fixed to the middle of the base material's inner wall via an adhesive resin layer, increasing the rigidity of the pipe wall and enhancing the overall compressive strength of the pipe. Corrugated steel is also fixed to the inner side of the base material's outer wall via an adhesive resin layer, preventing deformation of the overall structure and making it suitable for practical use. However, when this structure is buried underground for a long time, local stresses can cause uneven stress peaks. This can lead to significant deformation or damage in certain areas when subjected to significant external pressure, compromising serviceability and shortening the pipe's lifespan. Utility Model Content

[0004] The purpose of the utility model is to provide a corrugated pipe with reinforced outer wall, so that the crest of the wave is subjected to more uniform force, and it is not easy to be greatly deformed or damaged after the local area is subjected to huge external pressure, thereby extending the service life.

[0005] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0006] A corrugated pipe with an outer wall reinforcement comprises an inner wall and an outer wall from the inside to the outside, wherein the outer wall is a corrugated wall with a plurality of protrusions; a reinforcement layer is also included on the outer side of the outer wall, wherein the reinforcement layer is connected to the plurality of protrusions.

[0007] The invention provides a corrugated pipe with a reinforced outer wall, wherein the outer wall of the corrugated pipe is provided with a reinforcement layer, and the outer wall of the corrugated pipe is provided with a reinforcement layer. The reinforcement layer is used to strengthen the outer wall of the corrugated pipe, thereby strengthening the outer wall, enhancing the overall compressive strength of the pipe, and making the overall structure less prone to deformation, which is suitable for practical use. During the use and transportation of the corrugated pipe, the protrusions are most susceptible to pressure. When the protrusions are subjected to pressure, the protrusions can often only transfer the pressure downward, that is, flatten the protrusions. The reinforcing layer is used to connect multiple protrusions. When one of the connected protrusions receives an external force, the external force can not only be transferred downward but also transferred laterally. That is, the external force can be distributed to the other connected protrusions through the reinforcement layer, thereby strengthening the strength of the pipe, avoiding uneven force on the protrusions after local force is applied, that is, the force on the wave crest is more uniform, and the pressure resistance and impact resistance of the corrugated pipe are effectively enhanced. It is not easy to deform or break significantly after the local area is subjected to huge external pressure, so that the corrugated pipe can still be used normally, thereby extending its service life.

[0008] Furthermore, the reinforcement layer includes, from the outside to the inside, a reinforcement outer layer and a reinforcement layer. The inner side of the reinforcement layer is connected to the protrusion, and the outer side of the reinforcement layer is connected to the reinforcement outer layer. By providing a reinforcement layer to make the reinforcement layer harder, the protrusion can be better protected, the rigidity of the outer wall is improved, the overall compressive strength of the pipeline is enhanced, and the overall structure is less prone to deformation, making it suitable for practical use. Providing a reinforcement outer layer on the other side of the reinforcement layer for connection can protect the reinforcement layer, prevent the reinforcement layer from being directly exposed to air, and extend the service life of the reinforcement layer.

[0009] Furthermore, the reinforcement layer comprises an adhesive resin and steel, with both sides of the steel bonded to the protrusion and the reinforced outer layer via the adhesive resin. The steel reinforces the reinforcement layer, making it less prone to deformation and more rigid, thereby significantly improving the rigidity of the outer wall. The adhesive resin also allows the steel to better connect to the reinforced outer layer and inner wall, preventing separation during use.

[0010] Furthermore, a reinforcing inner layer is provided between the reinforcement layer and the outer wall. The outer side of the reinforcing inner layer is connected to the inner side of the reinforcement layer, and the inner side of the reinforcing inner layer is connected to the protrusion. The provision of the reinforcing inner layer prevents direct connection between the reinforcement layer and the protrusion, thereby reducing the probability of separation between the reinforcing layer and the protrusion. Using the reinforcing inner layer to directly connect to the protrusion can achieve a better connection and further prevent separation between the reinforcement layer and the protrusion during use.

[0011] Furthermore, both the outer and inner reinforcing layers are made of high-density polyethylene, and the reinforcement layer is made of roving. The inner reinforcing layer wraps and supports the roving, while the outer reinforcing layer covers and protects the roving. By making the outer reinforcing layer of high-density polyethylene, the corrugated pipe can be used without causing harm to the user by contacting the outer reinforcing layer. By making the inner reinforcing layer of high-density polyethylene, the inner reinforcing layer can be better connected to the outer wall, enhancing tensile strength.

[0012] Furthermore, a resin dipping tank is provided on the outer side of the reinforcing inner layer, through which the roving is impregnated with a resin adhesive and then wound around the reinforcing inner layer. This dipping tank allows the resin adhesive to accumulate better on one side of the reinforcing inner layer, thereby improving the adhesion of the reinforcing inner layer to the roving. The roving is made of glass fiber. Through a winding process, continuous fiber bundles are passed through a dipping tank, impregnated with a resin adhesive, and wound around the outer wall of the tube. This produces a tube with high mechanical strength and stable quality.

[0013] Furthermore, the inner and outer walls are both made of high-density polyethylene (HDPE), the other side of the reinforced inner layer is integrally formed with the protrusion, and the outer wall is integrally formed with the inner wall. By making both the inner and outer walls from HDPE, the inner wall is easily connected and integrally formed with the outer wall, also made of HDPE, thereby making the connection between the inner and outer walls more stable and enhancing tensile strength. By making the outer wall from HDPE, the outer wall is easily connected and integrally formed with the reinforced inner layer, also made of HDPE, thereby making the connection between the outer wall and the reinforced inner layer more stable and enhancing tensile strength.

[0014] Furthermore, the protrusions are of the same height. By setting the protrusions to have the same height, it is possible to facilitate the connection of the reinforcement layer with all the protrusions, thereby facilitating the force distribution to be transferred to all the protrusions, allowing the pipe to withstand greater external forces.

[0015] Furthermore, the plurality of protrusions are arranged at intervals. By arranging the plurality of protrusions at intervals, a connecting section can be provided between two adjacent protrusions, thereby making the connection between the plurality of protrusions more secure; and at the same time, the connecting end is used to connect with the inner wall, thereby making the connection between the outer wall and the inner wall more secure.

[0016] Furthermore, the protrusion is connected to the reinforcement layer surface, and the outer wall is connected to the inner wall surface. Through the surface connection, the connection strength between the protrusion and the reinforcement layer and the outer wall and the inner wall can be enhanced, thereby increasing the tensile strength.

[0017] Compared with the prior art, the beneficial effects are:

[0018] 1. The utility model provides an outer wall reinforced corrugated pipe, which adds a reinforcement layer on the outer side of the outer wall, uses the reinforcement layer to strengthen the protection of the protrusions, and uses the reinforcement layer to connect multiple protrusions. When one of the connected protrusions receives an external force, the external force can not only be transferred downward, but also can be transferred laterally, that is, the external force can be distributed to other connected protrusions through the reinforcement layer, thereby enhancing the strength of the pipe and avoiding uneven force on the protrusions after local force is applied, that is, the force on the wave crest can be more uniform, which can effectively enhance the pressure resistance and impact resistance of the corrugated pipe. After the local area is subjected to huge external pressure, it is not easy to cause large deformation or damage, so that the corrugated pipe can still be used normally, thereby extending its service life.

[0019] 2. The utility model provides a corrugated tube with a reinforced outer wall. The reinforced inner layer can wrap and support the roving, while the reinforced outer layer can cover and protect the roving. By making the reinforced outer layer of high-density polyethylene, the corrugated tube can be used without causing harm to the user if the reinforced outer layer is touched. By making the reinforced inner layer of high-density polyethylene, the reinforced inner layer can be better connected to the outer wall, enhancing tensile strength.

[0020] 3. The utility model provides an outer wall reinforced corrugated pipe. By setting the reinforcement layer as a hollow pipe, when the local force is applied, the pressure can not only be transferred laterally and distributed to other protrusions, but also be distributed to the protrusions of the entire circle, avoiding local force on the protrusions, thereby significantly enhancing the ring stiffness of the pipeline and enabling the pipe to withstand greater external forces. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of the outer wall reinforced corrugated pipe of the utility model;

[0022] Figure 2 This is a cross-sectional view of the outer wall reinforced corrugated pipe of the utility model;

[0023] Figure 3 yes Figure 2 A magnified view of the structure at point A in the middle.

[0024] Among them, the illustration marks are explained as follows: 1. Inner wall; 2. Outer wall; 201. Protrusion; 3. Reinforcement layer; 301. Reinforced outer layer; 302. Reinforcement layer; 303. Reinforced inner layer. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The present invention is described in one of the embodiments below in combination with the specific implementation methods. Among them, the drawings are only for illustrative purposes and represent only schematic diagrams rather than physical drawings, and cannot be understood as limiting the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0026] In the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, it 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 orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the positional relationship in the accompanying drawings are only for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features specified as "first" or "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that meet both A and B.

[0027] Example 1

[0028] like Figures 1 to 3 As shown, this embodiment proposes an outer wall reinforced corrugated pipe, which includes an inner wall 1 and an outer wall 2 from the inside to the outside, and the outer wall 2 is set to be a corrugated wall with multiple protrusions 201; the outer side of the outer wall 2 also includes a reinforcement layer 3, and the reinforcement layer 3 is connected to the multiple protrusions 201.

[0029] According to the above-mentioned technical means, the utility model provides an outer wall reinforced corrugated pipe, which is provided by adding a reinforcement layer 3 on the outer side of an ordinary corrugated pipe, that is, the outer side of the outer wall 2, and uses the reinforcement layer 3 to strengthen the protection of the protrusion 201, that is, it can strengthen the protection of the outer wall 2, thereby enhancing the overall compressive strength of the pipeline, making the overall structure less likely to deform, and suitable for practical use. During the use and transportation of the corrugated pipe, the protrusion 201 is most susceptible to pressure. When the protrusion 201 is under pressure, the protrusion 201 can only transfer the pressure downward, that is, flatten the protrusion 201. Use the reinforcement layer 3 to connect multiple protrusions 201. When one of the connected protrusions 201 receives external force, the external force can not only be transferred downward, but also transferred laterally, that is, the external force can be distributed to the other connected protrusions 201 through the reinforcement layer 3, thereby enhancing the strength of the pipe and avoiding uneven force on the protrusion 201 after local force. That is, the force on the wave crest can be more evenly distributed, which can effectively enhance the pressure resistance and impact resistance of the corrugated pipe. It is not easy to cause large deformation or damage after the local area is subjected to huge external pressure, so that the corrugated pipe can still be used normally, thereby extending its service life.

[0030] Example 2

[0031] This embodiment proposes an outer wall reinforced corrugated pipe. Based on the embodiment 1, in this embodiment, as Figure 1 and Figure 2 As shown, the reinforcement layer 3 includes, from the outside to the inside, a reinforcement outer layer 301 and a reinforcement layer 302. The inner side of the reinforcement layer 302 is connected to the protrusion 201, and the outer side of the reinforcement layer 302 is connected to the reinforcement outer layer 301. The provision of the reinforcement layer 302 makes the reinforcement layer 3 more rigid, providing enhanced protection for the protrusion 201, improving the rigidity of the outer wall 2, and enhancing the overall compressive strength of the pipeline, making the overall structure less susceptible to deformation and suitable for practical use. Providing the reinforcement outer layer 301 on the other side of the reinforcement layer 302 for connection protects the reinforcement layer 302, preventing it from being directly exposed to air and extending its service life.

[0032] Reinforcement layer 302 comprises adhesive resin and steel. The steel is bonded to protrusion 201 and reinforced outer layer 301 on either side via the adhesive resin. The steel reinforces reinforcement layer 3, making it resistant to deformation and highly rigid, significantly improving the rigidity of outer wall 2. The adhesive resin also ensures a better connection between the steel and reinforced outer layer 301 and inner wall 1, preventing separation during use.

[0033] Example 3

[0034] This embodiment proposes an outer wall reinforced corrugated pipe. Based on the embodiment 1, in this embodiment, as Figure 2 and Figure 3As shown, the reinforcement layer 3 includes, from the outside to the inside, a reinforcement outer layer 301 and a reinforcement layer 302. The inner side of the reinforcement layer 302 is connected to the protrusion 201, and the outer side of the reinforcement layer 302 is connected to the reinforcement outer layer 301. The provision of the reinforcement layer 302 makes the reinforcement layer 3 more rigid, providing enhanced protection for the protrusion 201, improving the rigidity of the outer wall 2, and enhancing the overall compressive strength of the pipeline, making the overall structure less susceptible to deformation and suitable for practical use. Providing the reinforcement outer layer 301 on the other side of the reinforcement layer 302 for connection protects the reinforcement layer 302, preventing it from being directly exposed to air and extending its service life.

[0035] A reinforcing inner layer 303 is further provided between the reinforcing layer 302 and the outer wall 2. The outer side of the reinforcing inner layer 303 is connected to the inner side of the reinforcing layer 302, and the inner side of the reinforcing inner layer 303 is connected to the protrusion 201. The provision of the reinforcing inner layer 303 prevents direct connection between the reinforcing layer 302 and the protrusion 201, thereby reducing the probability of separation between the reinforcing layer 3 and the protrusion 201. Direct connection between the reinforcing inner layer 303 and the protrusion 201 improves the connection and further prevents separation between the reinforcing layer 3 and the protrusion 201 during use.

[0036] The reinforced outer layer 301 and the reinforced inner layer 303 are both made of high-density polyethylene, and the reinforcement layer 302 is made of roving. The reinforced inner layer 303 can wrap and support the roving, and the reinforced outer layer 301 can cover and protect the roving. The roving is made of glass fiber, which has the following characteristics: high relative density, high tensile strength, good heat resistance, high elastic modulus, and good chemical stability. The disadvantages of glass fiber are high brittleness and poor wear resistance; the smooth surface of glass fiber is not easy to combine with other fibers; and it can cause a tingling sensation on the human skin, so we add a protective layer to the outer surface of the pipe. By making the reinforced outer layer 301 of high-density polyethylene, the corrugated pipe can be used without causing harm to the user by touching the reinforced outer layer 301. By making the reinforced inner layer 303 of high-density polyethylene, the reinforced inner layer 303 can be better connected to the outer wall 2, thereby enhancing the tensile strength.

[0037] The outer side of the reinforcing inner layer 303 is equipped with a resin dipping tank. The roving is then impregnated with a resin adhesive and then wound around the reinforcing inner layer 303. The dipping tank allows the resin adhesive to accumulate better on one side of the reinforcing inner layer 303, thereby improving the adhesion of the reinforcing inner layer 303 to the roving. The roving is made of glass fiber. Through a winding method, continuous fiber bundles are passed through the dipping tank, impregnated with resin adhesive, and then wound around the outer wall of the pipe. This produces a pipe with high mechanical strength and stable quality.

[0038] Both the inner wall 1 and the outer wall 2 are made of high-density polyethylene. The other side of the reinforced inner layer 303 is integrally formed with the protrusion 201, and the outer wall 2 is integrally formed with the inner wall 1. By making both the inner wall 1 and the outer wall 2 of high-density polyethylene, the inner wall 1 is easily connected and integrally formed with the outer wall 2, also made of high-density polyethylene, thereby providing a more stable connection between the inner and outer walls 1 and 2 and enhancing tensile strength. By making the outer wall 2 of high-density polyethylene, the outer wall 2 is easily connected and integrally formed with the reinforced inner layer 303, also made of high-density polyethylene, thereby providing a more stable connection between the outer wall 2 and the reinforced inner layer 303 and enhancing tensile strength.

[0039] Example 4

[0040] This embodiment proposes an outer wall reinforced corrugated pipe. Based on the embodiment 1, in this embodiment, as Figure 2 As shown, the heights of the protrusions 201 are consistent. By setting the heights of the protrusions 201 to be consistent, it is easy to connect the reinforcement layer 3 with all the protrusions 201, thereby facilitating the force distribution to be transferred to all the protrusions 201, allowing the pipe to withstand greater external forces.

[0041] like Figure 1 As shown, multiple protrusions 201 are arranged at intervals. By arranging multiple protrusions 201 at intervals, a connecting section can be provided between two adjacent protrusions 201, thereby increasing the connection area between the two adjacent protrusions 201, thereby making the connection between the multiple protrusions 201 more secure; and at the same time, the connection end is used to connect with the inner wall 1, thereby making the connection between the outer wall 2 and the inner wall 1 more secure.

[0042] like Figure 3 As shown, the protrusion 201 is surface-connected to the reinforcement layer 3, and the outer wall 2 is surface-connected to the inner wall 1. Through surface connection, the connection strength between the protrusion 201 and the reinforcement layer 3 and the outer wall 2 and the inner wall 1 can be enhanced, thereby increasing the tensile strength.

[0043] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0044] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. An outer wall reinforced corrugated pipe, comprising an inner wall (1) and an outer wall (2) from the inside to the outside, wherein the outer wall (2) is a corrugated wall having a plurality of protrusions (201); characterized in that: A reinforcement layer (3) is also provided on the outside of the outer wall (2), and the reinforcement layer (3) is connected to the plurality of protrusions (201).

2. The outer wall reinforced corrugated pipe according to claim 1, characterized in that: The reinforcement layer (3) comprises, from the outside to the inside, an outer reinforcement layer (301) and a reinforcement layer (302), the inner side of the reinforcement layer (302) being connected to the protrusion (201), and the outer side of the reinforcement layer (302) being connected to the outer reinforcement layer (301).

3. The outer wall reinforced corrugated pipe according to claim 2, characterized in that: The reinforcement layer (302) comprises an adhesive resin and a steel material, and two sides of the steel material are respectively connected to the protrusion (201) and the reinforced outer layer (301) through the adhesive resin.

4. The outer wall reinforced corrugated pipe according to claim 2, characterized in that: A reinforcing inner layer (303) is further provided between the reinforcing layer (302) and the outer wall (2), the outer side of the reinforcing inner layer (303) being connected to the inner side of the reinforcing layer (302), and the inner side of the reinforcing inner layer (303) being connected to the protrusion (201).

5. The outer wall reinforced corrugated pipe according to claim 4, characterized in that: The outer reinforcement layer (301) and the inner reinforcement layer (303) are both made of high-density polyethylene, and the reinforcement layer (302) is made of roving.

6. The outer wall reinforced corrugated pipe according to claim 5, characterized in that: A dipping tank is provided on the outer side of the reinforcing inner layer (303), and the untwisted roving is dipped in resin glue through the dipping tank and then wound on the reinforcing inner layer (303).

7. The outer wall reinforced corrugated pipe according to claim 5, characterized in that: The inner wall (1) and the outer wall (2) are both made of high-density polyethylene material, the reinforced inner layer (303) and the protrusion (201) are integrally formed, and the outer wall (2) and the inner wall (1) are integrally formed.

8. The outer wall reinforced corrugated pipe according to any one of claims 1 to 7, characterized in that: The heights of the plurality of protrusions (201) are all consistent.

9. The outer wall reinforced corrugated pipe according to any one of claims 1 to 7, characterized in that: The plurality of protrusions (201) are arranged at intervals.

10. The outer wall reinforced corrugated pipe according to any one of claims 1 to 7, characterized in that: The protrusion (201) is surface-connected to the reinforcement layer (3), and the outer wall (2) is surface-connected to the inner wall (1).

Images