An inner octagonal tube

Abstract

The utility model discloses an inner octagonal pipe belongs to pipe material technical field, including the pipe body of octagonal structure, the inner chamber of pipe body also is octagonal structure, the pipe body includes work section, flared connecting section and embedded connecting section, is equipped with the transition section between work section and flared connecting section, and flared connecting section and transition section are located one end of work section, and embedded connecting section is located the other end of work section, flared connecting section, transition section work section and embedded connecting section integrated molding. The pipe body of octagonal structure in the utility model, compared with the circular pipe body, has increased the contact surface area between pipes, and is more stable in storage and transportation, is convenient for safe stacking, and the contact pressure between pipes is small, and the pipe is not easy to deform, the pipe cavity of octagonal shape, and the traditional circular pipe cavity of same inner diameter is greater than the pipe cavity capacity, and the drainage capacity is increased, the first wave crest on work section M type or n type increases the surface area of contact with the outside, and the pressure intensity that the pipe body receives reduces, and the service life is improved.

Description

Technical Field

[0001] This utility model belongs to the field of pipe technology, and in particular relates to an internal octagonal pipe. Background Technology

[0002] In modern industry and construction, pipes serve as crucial components for fluid transport and structural support, their performance directly impacting project quality and usability. Traditional round pipes have long dominated the market due to their mature manufacturing processes and uniform stress distribution. However, with the continuous expansion and increasing complexity of engineering applications, the limitations of round pipes are becoming increasingly apparent.

[0003] On the one hand, during the storage and transportation of pipes, round pipes, due to their smooth and isotropic outer surfaces, have a small contact area between them. This makes them prone to rolling and shifting during stacking, resulting in poor stacking stability. This not only increases the difficulty of warehousing management but also poses safety hazards. Simultaneously, the small contact area leads to higher contact pressure between the pipes. Under long-term stacking or external pressure, the pipes are highly susceptible to deformation, affecting their subsequent performance.

[0004] On the other hand, in the field of fluid transportation, the design of circular pipes limits their capacity to a relatively small amount under the same inner diameter, making it unsuitable for some engineering projects with high requirements for drainage and transportation volumes. Furthermore, the smooth outer surface of conventional circular pipes lacks an effective structural design to distribute pressure when subjected to external pressure, leading to easy damage due to localized stress concentration during long-term use, shortening service life and increasing maintenance costs.

[0005] Therefore, an internal octagonal tube is needed for use. Utility Model Content

[0006] This utility model provides an internal octagonal tube to solve the problems in the prior art.

[0007] The present invention adopts the following technical solution: an internal octagonal tube, comprising an octagonal tube body, the inner cavity of which is also octagonal; the tube body comprises a working section, a flared connecting section, and an embedded connecting section, a transition section is provided between the working section and the flared connecting section, the flared connecting section and the transition section are located at one end of the working section, the embedded connecting section is located at the other end of the working section, and the working section, the flared connecting section, the embedded connecting section and the transition section are integrally formed.

[0008] Furthermore, the outer wall of the working section is provided with a number of equally spaced annular first wave peaks, which are formed by protrusions from the outer wall of the working section.

[0009] Furthermore, the first wave peak is a closed cavity structure.

[0010] Furthermore, several of the first peaks are M-shaped peaks.

[0011] Furthermore, several of the first peaks are n-type peaks.

[0012] Furthermore, the transition tilt angle on the transition section between the working section and the flared connecting section is 20-30 degrees.

[0013] Furthermore, the flared connecting section is provided with two annularly arranged second wave peaks for accommodating the sealing ring, the second wave peaks being formed by protrusions from the inner sidewall of the flared connecting section.

[0014] Furthermore, the second peak of the flared connecting section is at the same height as the first peak of the working section.

[0015] Furthermore, the embedded connecting section has a ring-shaped third wave peak at the connection with the working section, and the third wave peak is formed by protrusion of the inner sidewall of the embedded connecting section.

[0016] Furthermore, the embedded connecting segment has two annularly arranged fourth wave peaks, which are formed by protrusions from the inner sidewall of the embedded connecting segment.

[0017] The above-mentioned technical solutions adopted in the embodiments of this utility model can achieve the following beneficial effects:

[0018] (i) The octagonal tube structure increases the contact surface area between tubes compared to the circular tube structure. It is also more stable in storage and transportation, easier to stack safely, and the contact pressure between tubes is small, making the tubes less prone to deformation.

[0019] (ii) The octagonal cavity has a larger capacity than the traditional circular cavity of the same inner diameter, thus increasing the drainage volume.

[0020] (iii) The increased surface area of ​​the first wave peak of the M-type or n-type in the working section in contact with the outside reduces the pressure on the pipe body and improves its service life. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of the working section of this utility model, which has an M-shaped wave peak. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of the working section of this utility model, which has an M-shaped wave peak. Figure 2 ;

[0024] Figure 3 This is a cross-sectional view of the working section of this utility model, which has an M-shaped wave peak.

[0025] Figure 4 This is a magnified view of a portion of the working section of this invention, which has an M-shaped wave peak.

[0026] Figure 5 This is a schematic diagram of the three-dimensional structure of the working section of this utility model, which has an n-shaped wave peak. Figure 1 ;

[0027] Figure 6 This is a schematic diagram of the three-dimensional structure of the working section of this utility model, which has an n-shaped wave peak. Figure 2 ;

[0028] Figure 7 This is a cross-sectional view of the working section of this utility model, which is an n-type wave crest.

[0029] Figure 8 This is a magnified view of a portion of the working section of this invention, which has an n-type wave peak.

[0030] Figure label:

[0031] Working section 1, flared connection section 2, embedded connection section 3, transition section 4, first peak 5, second peak 6, third peak 7, fourth peak 8. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] The technical solution of the internal octagonal tube provided by the present invention will be described in detail below with reference to the accompanying drawings.

[0034] Reference Figures 1 to 8 As shown, this utility model embodiment provides an internal octagonal tube, including an octagonal tube body, the inner cavity of which is also octagonal; the tube body includes a working section 1, a flared connecting section 2, and an embedded connecting section 3, a transition section 4 is provided between the working section 1 and the flared connecting section 2, the flared connecting section 2 and the transition section 4 are located at one end of the working section 1, and the embedded connecting section 3 is located at the other end of the working section 1, the working section 1, the flared connecting section 2, the embedded connecting section 3 and the transition section 4 are integrally formed.

[0035] Compared to traditional circular tubes, the octagonal tube structure significantly increases the contact surface area between the tubes. During storage and transportation, this effectively reduces tube rolling and displacement, resulting in more stable stacking and reduced warehousing management difficulty and safety hazards. Simultaneously, the increased contact area reduces the contact pressure between the tubes, preventing deformation due to excessive pressure and ensuring the tube's performance. Furthermore, the one-piece molding process simplifies the production process and eliminates weak points created by splicing, enhancing the overall structural strength and stability of the tube body and improving product quality and service life.

[0036] Compared to a circular cavity of the same inner diameter, the octagonal cavity allows for a more efficient velocity distribution of the fluid. In a circular cavity, the fluid tends to flow at high speeds in the center, while the velocity decreases at the edges, leading to eddies and energy loss. The corners of the octagonal cavity act as a guide, reducing eddies and allowing for smoother fluid flow. Furthermore, for the same circumscribed circle diameter (i.e., similar pipe outer diameters), the octagonal cavity has a larger cross-sectional area, accommodating more fluid and thus increasing drainage or transport capacity under the same conditions.

[0037] The octagonal inner cavity echoes the octagonal outer wall structure of the pipe, resulting in a more balanced stress distribution across the entire pipe. While the stress on the pipe wall of a circular inner cavity is uniform, it is prone to localized stress concentration due to the "arch effect" when subjected to external radial pressure. In contrast, the corners of the octagonal inner cavity can disperse and transmit external pressure in multiple directions to the reinforcing structures such as the corrugations on the pipe body. Combined with the M-shaped or n-shaped corrugations in the working section, this further enhances the pipe's resistance to compression, reduces inner cavity deformation caused by excessive external pressure, and extends the pipe's service life.

[0038] In this embodiment, the outer wall of the working section 1 is provided with a plurality of first wave peaks 5 arranged in a ring at equal intervals, and the plurality of first wave peaks 5 are formed by protrusions from the outer wall of the working section 1.

[0039] The placement of the first wave crest 5 further increases the contact surface area between the pipe and the external environment, effectively dispersing the external pressure on the pipe, avoiding localized stress concentration, and thus extending the service life of the pipe. In practical applications, such as when subjected to ground pressure or other external loads, the first wave crest 5 can evenly distribute the pressure, reducing the risk of pipe damage. Furthermore, the evenly spaced, ring-shaped placement of the first wave crest 5 can also enhance the pipe's bending resistance to a certain extent, enabling the pipe to maintain a good structural shape in complex operating environments, improving its applicability and reliability.

[0040] In this embodiment, the first wave peak 5 is a closed cavity structure.

[0041] The first wave peak 5 employs a hollow structure, effectively reducing the overall weight of the pipe without compromising its ability to increase contact area and disperse pressure. This not only lowers transportation costs but also makes the pipe installation and handling more convenient. Simultaneously, the hollow structure acts as a buffer; when the pipe is subjected to external impacts or vibrations, the cavity absorbs some energy, reducing the impact force on the pipe and further protecting its internal structure, thus improving its impact resistance and durability.

[0042] Example 1: Refer to Figure 4 As shown;

[0043] In this embodiment, several first peaks 5 are M-shaped peaks.

[0044] The first peak of the M-shaped corrugation (5) exhibits a symmetrical, undulating wave shape. Its multiple peaks and troughs create a surface with more contact points with external objects, significantly increasing the contact surface area compared to ordinary peaks. This effectively disperses the pressure on the pipe and reduces localized stress concentration. In complex underground laying environments, facing uneven soil compression, the M-shaped corrugation, with its symmetrical undulating structure, evenly distributes pressure across the peaks and troughs, resulting in more balanced stress on the pipe. This reduces the risk of pipe deformation or breakage due to stress concentration, effectively extending the pipe's service life. Furthermore, the symmetrical structure of the M-shaped corrugation also excels in improving the pipe's bending resistance. When the pipe is subjected to lateral forces, the symmetrical wave shape provides mutual support, enhancing the pipe's resistance to bending deformation. This allows the pipe to maintain a good structural shape even under complex conditions, making it suitable for engineering scenarios with high stability requirements, such as the drainage systems of large buildings.

[0045] Example 2: Refer to Figure 8 As shown;

[0046] In this embodiment, several first peaks 5 are n-type peaks.

[0047] The first crest of the n-shaped wave exhibits a unique unilateral tilt, which makes it superior in handling unidirectional pressure. For example, when subjected to lateral earth pressure or water flow impact, the n-shaped crest can disperse and guide the force along the pressure direction, effectively converting external pressure into stress transmission within the pipe structure, reducing the impact of pressure on localized areas of the pipe. Compared to other crest shapes, the n-shaped crest is better adapted to unidirectional stress environments, protecting the pipe from damage. Furthermore, the tilted surface of the n-shaped crest increases the friction between pipes during stacking, making the stack more stable and further enhancing the safety of the pipes during storage and transportation.

[0048] In this embodiment, the transition inclination angle on the transition section 4 between the working section 1 and the flared connecting section 2 is 20-30 degrees; preferably 25 degrees. This angle design allows the end of the embedded connecting section 3 to gradually abut against the inner wall of the transition section 4 after entering the flared connecting section 2, forming a tight fit and significantly enhancing the sealing effect. When the angle is too large, the distance from the end of the embedded connecting section 3 into the transition section 4 is too short, and the sealing ring cannot properly match the groove in the second wave 6, leading to a decrease in sealing performance. Conversely, when the angle is too small, the end of the embedded connecting section 3 cannot fully abut against the inner wall of the transition section 4, which not only reduces the stability of the connection but also affects the sealing effect. An inclination angle of 20-30 degrees represents the optimal balance between the two, ensuring the sealing and stability of the pipe connection, effectively preventing fluid leakage, and is suitable for fluid transportation scenarios with high sealing requirements, such as water supply and drainage projects and chemical fluid transportation.

[0049] In this embodiment, the flared connecting section 2 is provided with two annularly arranged second wave peaks 6 for accommodating the sealing ring. The second wave peaks 6 are formed by protrusions from the inner sidewall of the flared connecting section 2.

[0050] The double-seal ring design provides a double seal for pipe connections, significantly improving the sealing performance at the joint and effectively preventing fluid leakage. The second peak 6, formed by a protrusion on the inner wall, precisely secures the seal ring, preventing displacement or deformation during installation and use, ensuring reliable sealing. In high-pressure fluid transport or long-term operation, this design effectively avoids leakage problems caused by seal failure, reducing maintenance costs and safety risks, and improving the stability and safety of the engineering system.

[0051] In this embodiment, the second peak 6 of the flared connecting section 2 is at the same height as the first peak 5 of the working section 1.

[0052] This design results in a more continuous and smooth structure at the pipe joints, significantly increasing the support strength of the connections. When the pipes are subjected to external pressure or tension, this uniform structure can more effectively transfer and disperse stress, preventing damage to the joints due to stress concentration. Simultaneously, the smooth and continuous structure reduces fluid resistance during flow, improving fluid transport efficiency and reducing energy loss, making it suitable for industrial applications with high requirements for fluid transport efficiency and connection strength.

[0053] In this embodiment, a third wave peak 7 is provided at the connection between the embedded connecting segment 3 and the working segment 1, and the third wave peak 7 is formed by protrusion of the inner sidewall of the embedded connecting segment 3.

[0054] After the embedded connecting section 3 enters the flared connecting section 2, the third wave peak 7 abuts against the port of the flared connecting section 2, effectively blocking the connecting seam. This design not only increases the pressure resistance of the connection, enabling it to withstand greater external pressure, but also further enhances the sealing of the connection, effectively preventing fluid leakage from the seam.

[0055] In this embodiment, there are two annularly arranged fourth wave peaks 8 inside the embedded connecting segment 3, and the fourth wave peaks 8 are formed by protrusions from the inner sidewall of the embedded connecting segment 3.

[0056] When the fourth wave 8 is fitted onto the embedded connecting section 3 on one side, it serves to prevent the sealing ring from falling off. During the installation and use of the pipe, the sealing ring may shift or even fall off due to external forces or vibrations, leading to seal failure. The presence of the fourth wave 8 effectively limits and fixes the sealing ring, ensuring that it is always in the correct position and maintaining good sealing performance. In addition, the design of double fourth waves 8 further enhances the fixing effect of the sealing ring, improves the reliability and stability of the pipe connection, reduces the risk of failure caused by sealing ring detachment, and extends the overall service life of the pipe.

[0057] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. An internal octagonal tube, characterized in that, The tube body includes an octagonal structure, and the inner cavity of the tube body is also octagonal. The tube body includes a working section (1), a flared connecting section (2), and an embedded connecting section (3). A transition section (4) is provided between the working section (1) and the flared connecting section (2). The flared connecting section (2) and the transition section (4) are located at one end of the working section (1), and the embedded connecting section (3) is located at the other end of the working section (1). The working section (1), the flared connecting section (2), the embedded connecting section (3), and the transition section (4) are integrally formed.

2. The octagonal tube according to claim 1, characterized in that: The outer wall of the working section (1) is provided with a number of first wave peaks (5) arranged in a ring at equal intervals, and the number of first wave peaks (5) are formed by protrusions from the outer wall of the working section (1).

3. An internal octagonal tube according to claim 2, characterized in that: The first wave peak (5) is a closed cavity structure.

4. An internal octagonal tube according to claim 3, characterized in that: Several first peaks (5) are M-type peaks.

5. An internal octagonal tube according to claim 3, characterized in that: Several first peaks (5) are n-type peaks.

6. An internal octagonal tube according to claim 1, characterized in that: The transition tilt angle on the transition section (4) between the working section (1) and the flared connecting section (2) is 20-30 degrees.

7. An internal octagonal tube according to any one of claims 1-6, characterized in that: The flared connecting section (2) is provided with two annularly arranged second wave peaks (6) for accommodating the sealing ring. The second wave peaks (6) are formed by protrusions from the inner sidewall of the flared connecting section (2).

8. An internal octagonal tube according to claim 7, characterized in that: The second peak (6) of the flared connecting section (2) is level with the first peak (5) of the working section (1).

9. An internal octagonal tube according to claim 1, characterized in that: The embedded connecting section (3) is provided with a ring-shaped third wave peak (7) at the connection with the working section (1), and the third wave peak (7) is formed by protrusion of the inner sidewall of the embedded connecting section (3).

10. An internal octagonal tube according to claim 1, characterized in that: The embedded connecting section (3) has two annularly arranged fourth wave peaks (8), which are formed by protrusions from the inner sidewall of the embedded connecting section (3).

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