High-pressure-bearing corrugated pipe

Abstract

The utility model discloses a high-pressure-bearing corrugated pipe, and belongs to the technical field of pipelines. In view of the situation that when an existing sewage conveying pipe is buried underground, the pressure-bearing capacity of backfill soil is insufficient, and the existing sewage conveying pipe is prone to being damaged due to pressure, according to the high-pressure-bearing corrugated pipe, a plurality of protruding rings arranged at intervals are arranged in the circumferential direction of a common round pipe, the common round pipe is transformed into the corrugated pipe, and the strength of the round pipe is improved; meanwhile, on the basis of the corrugated pipe, the convex ring grooves which are concave inwards are further formed in the convex rings, so that the reinforcing effect of the convex rings which can improve the strength originally is further improved, and the round pipe can bear higher backfill soil pressure when being located underground.

Description

Technical Field

[0001] The utility model relates to the technical field of pipelines, and more specifically, to a high-pressure-resistant corrugated pipe. Background Art

[0002] Due to the development of modern society and the improvement of people's living quality, the requirements for water use have been greatly improved. In order to prevent sewage from overflowing in the city, causing waterlogging and polluting the environment, the municipal government will bury sewage transmission pipelines underground in the city to transport urban sewage to the sewage treatment plant for sewage treatment, and then discharge it after reaching the standard.

[0003] Corrugated pipes are used in many industries, mainly for transporting liquids. For example, stainless steel corrugated pipes are flexible and pressure-resistant pipelines, which are widely used in many pipeline extensions or equipment connections, etc. during the process of municipal sewage transmission and treatment. Existing corrugated pipes are generally round pipes. Since sewage transmission pipelines are generally buried underground, the water transmission corrugated pipes need to bear a large pressure. When ordinary round pipes bear the pressure of backfill soil underground for a long time, the wall support force will be insufficient over time, resulting in the pipeline being crushed, thus requiring multiple repairs, which is time-consuming and laborious.

[0004] After retrieval, Chinese patent document CN110649538A discloses a high-impact-resistant pillow-shaped composite casing and a casing assembly, including a pipe body and a plurality of impact-resistant reinforcing ribs arranged on the outer wall of the pipe body. Adjacent two impact-resistant reinforcing ribs are arranged at intervals. The outer periphery of the impact-resistant reinforcing rib is square and the four corners of the impact-resistant reinforcing rib are recessed to form inner rounded corners. Both ends of the pipe body extend outward with connecting parts. Using its structure, the self-impact resistance can be improved. A plurality of impact-resistant reinforcing ribs are sleeved on the outer wall of the pipe body. By using the structure of the impact-resistant reinforcing rib and the inner rounded corners formed by the recessed corners, the compressive resistance of the impact-resistant reinforcing rib is improved, and the compressive strength of the high-impact-resistant pillow-shaped composite casing in the vertical direction is also improved. At the same time, if the pressures received by the plurality of impact-resistant reinforcing ribs are different, the force can be transmitted to the pipe body and evenly dispersed and offset, thereby improving the ring stiffness of the high-impact-resistant pillow-shaped composite casing and its impact resistance. However, this application only improves the circumferential reinforcing ring outside the corrugated pipe, and the improvement is not enough to enable the corrugated pipe to withstand the pressure of backfill soil for a long time when buried deep underground. Summary of the Invention

[0005] 1. Technical problems to be solved by the utility model

[0006] When the existing sewage transmission pipes are buried underground, their bearing capacity for backfill soil is insufficient, which is prone to the situation of being damaged by pressure. The utility model provides a high-pressure-resistant corrugated pipe, which improves the structure of an ordinary round pipe to enhance its bearing capacity underground.

[0007] 2. Technical solutions

[0008] To achieve the above object, the technical solution provided by the present utility model is as follows:

[0009] A high-pressure bearing corrugated pipe of the present utility model includes a pipe body. A plurality of spaced convex rings are sleeved on the outer periphery of the pipe body, and corrugated grooves are formed between adjacent convex rings; an inwardly concave convex ring groove is circumferentially provided on the convex ring. One end of the pipe body is provided with a flared opening, and the inner diameter of the flared opening is larger than the inner diameter of the pipe body.

[0010] Furthermore, the pipe body includes a pipe wall, and the vertical cross-section of the pipe wall is circular.

[0011] Furthermore, the pipe body includes a pipe wall, and the pipe wall includes a straight wall and an arc wall. The straight walls and the arc walls are alternately connected to form the pipe wall; the straight walls are arranged opposite to each other, and the arc walls are arranged opposite to each other.

[0012] Furthermore, an anti-retreat member is provided at one end of the pipe body, and the anti-retreat member is sleeved in the corrugated groove.

[0013] Furthermore, a sealing member is also provided on the pipe body. The sealing member is sleeved in the corrugated groove, and the sealing member is provided at one end of the pipe body.

[0014] Furthermore, the anti-retreat member and the sealing member are at the same end of the pipe body, and are located at different ends of the pipe body from the flared opening.

[0015] Furthermore, an anti-retreat groove is opened on the inner wall of the flared opening, and the opening of the anti-retreat groove faces the pipe body.

[0016] Furthermore, a sealing clamp is provided on the inner wall of the flared opening; the sealing member includes a sealing ring, and a sealing groove is circumferentially opened along the sealing ring. The sealing ring is clamped on the sealing clamp through the sealing groove.

[0017] Furthermore, the anti-retreat member includes a clamping ring, and a bevel is circumferentially provided on the clamping ring; the clamping ring is arranged in the anti-retreat groove.

[0018] Furthermore, a plurality of ventilation holes are provided between the convex ring and the pipe wall, and the ventilation holes are arranged along the length direction of the pipe wall.

[0019] Furthermore, the outer periphery of the convex ring is square; at least one corner of the convex ring is recessed towards the center to form an inner concave angle.

[0020] Furthermore, the flared opening is communicated with the pipe body, and the connection between the two is in an arc transition.

[0021] Furthermore, the outer shape of the convex ring is square or has an arc on any one side or has arcs on any two sides or has arcs on any three sides or has arcs on all four sides.

[0022] Further, an annular reinforcing rib is arranged in the corrugated groove and is arranged to surround the outer periphery of the pipe body.

[0023] 3. Beneficial effects

[0024] Adopting the technical solution provided by the present utility model, compared with the existing well-known technologies, it has the following beneficial effects:

[0025] (1) Considering that when the existing sewage conveying pipes are buried underground, their bearing capacity for backfill soil is insufficient and they are prone to being damaged under pressure. A high-pressure bearing corrugated pipe of the present utility model is provided with a plurality of convex rings arranged at intervals in the circumferential direction of a common circular pipe, transforming the common circular pipe into a corrugated pipe and increasing the strength of the circular pipe. At the same time, on the basis of the corrugated pipe, a convex ring groove that is recessed inward is further arranged on the convex ring, enabling the convex ring that can originally enhance the strength to further improve its strengthening effect, so that the circular pipe can withstand greater backfill soil pressure when underground.

[0026] (2) The cross-section of a high-pressure bearing corrugated pipe of the present utility model is not a traditional circle, but an alternating arrangement of arc-shaped walls and straight walls. Among them, the two arc-shaped walls at both ends are arranged oppositely and are located at the upper and lower parts of the pipe body, and the two straight walls are arranged oppositely and are located at the left and right parts of the pipe body. Since the side walls of the corrugated pipe are hardly affected by the pressure of the backfill soil when it is set underground, the main pressure comes from the upper and lower directions. Setting the side walls as straight walls can provide more support for the upper and lower arc-shaped walls, thereby preventing deformation due to upper and lower forces. At the same time, the upper and lower arc-shaped walls form an arch structure, which can withstand greater forces. In addition, for a sewage conveying pipe, the arc-shaped bottom surface can prevent the accumulation of dirt.

[0027] (3) A high-pressure bearing corrugated pipe of the present utility model is provided with a sealing member and an anti-retreat member at the connection of two pipe bodies. When the two pipe bodies are connected, the sealing member and the anti-retreat member are fixed at the flared opening. Since the anti-retreat member is provided with a bevel on the circumference, forming a shape with one end large and one end small, when the two pipe bodies are connected, they can be easily inserted. After the bevel is stuck into the anti-retreat groove, it is not easy to fall off.

[0028] (4) A high-pressure bearing corrugated pipe of the present utility model is provided with a plurality of ventilation holes between the pipe wall and the convex ring, which is convenient for blowing air between the two. During manufacturing, the blown air can separate the two layers of materials, facilitating the shaping device to perform shaping treatment on the convex ring.

[0029] (5) A high-pressure bearing corrugated pipe of the present utility model has the four corners of the convex ring recessed towards the center to form concave corners, which can improve the compressive capacity of the convex ring and avoid the collision of the four protruding corners during installation, facilitating the installation of the corrugated pipe assembly. Description of the drawings

[0030] Figure 1 It is a schematic diagram of the connection of two corrugated pipes in Embodiment 1 of the present utility model;

[0031] Figure 2 Structural schematic diagram of the corrugated pipe in Embodiment 1 of the present utility model when provided with a seal and an anti-retreat member;

[0032] Figure 3 Structural schematic diagram of the corrugated pipe in Embodiment 1 of the present utility model;

[0033] Figure 4 Structural schematic diagram of the corrugated pipe in Embodiment 1 of the present utility model from another perspective;

[0034] Figure 5 Front view of the corrugated pipe in Embodiment 1 of the present utility model;

[0035] Figure 6 is Figure 5 Cross-sectional view taken along the A-A plane in

[0036] Figure 7 Structural schematic diagram of the seal in Embodiment 1 of the present utility model;

[0037] Figure 8 Structural schematic diagram of the anti-retreat member in Embodiment 1 of the present utility model;

[0038] Figure 9 Side view of the anti-retreat member in Embodiment 1 of the present utility model;

[0039] Figure 10 Side view of the corrugated pipe in Embodiment 3 of the present utility model;

[0040] Figure 11 Structural schematic diagram of the present utility model where the pipe wall is circular, and three sides of the convex ring are arc-shaped and one side is straight.

[0041] Explanation of the reference numerals in the schematic diagram:

[0042] 1. Pipe body; 11. Pipe wall; 111. Straight wall; 112. Arc wall; 113. Vent hole; 12. Convex ring; 121. Concave angle; 13. Convex ring groove; 14. Corrugation groove; 15. Flared opening; 16. Outer protrusion; 17. Anti-retreat groove; 18. Seal card;

[0043] 2. Anti-retreat member; 21. Clamping ring; 22. Inclined platform;

[0044] 3. Seal; 31. Sealing ring; 32. Sealing groove. Detailed implementation manner

[0045] To further understand the content of the present utility model, the present utility model will be described in detail in combination with the accompanying drawings and embodiments.

[0046] Embodiment 1

[0047] A high-pressure-resistant corrugated pipe according to this embodiment improves the structural strength of the pipe body 1 by improving the shape of a common round pipe, enabling it to withstand more pressure from backfill soil when buried underground, increasing its service life, and reducing the number of maintenance times.

[0048] Specifically, referring to Figures 1 - 3 , a high-pressure-resistant corrugated pipe according to this embodiment can connect multiple corrugated pipes together to form a corrugated pipe assembly. The corrugated pipe includes a pipe body 1, and the pipe body 1 includes a pipe wall 11. The pipe wall 11 encloses a channel along the length direction of the pipe body 1; a plurality of spaced convex rings 12 are arranged on the outer side of the pipe wall 11 along the circumferential direction of the pipe body 1, with the spaces forming corrugated grooves 14; an inwardly concave convex ring groove 13 is arranged on the circumferential direction of the convex ring 12. In this embodiment, a plurality of spaced convex rings 12 are arranged on the circumferential direction of a common round pipe to transform the common round pipe into a corrugated pipe, increasing the strength of the round pipe; at the same time, on the basis of the corrugated pipe, an inwardly concave convex ring groove 13 is further arranged on the convex ring 12, enabling the convex ring 12 that can originally improve the strength to further enhance its strengthening effect, so that the round pipe can withstand greater backfill soil pressure when underground. In this embodiment, the outer circumference of the convex ring 12 is square; the four corners of the convex ring 12 are recessed towards the center to form concave corners 121. Since the four corners of the convex ring 12 are recessed towards the center to form concave corners 121, the compressive resistance of the convex ring 12 can be improved, and at the same time, the collision of the four protruding corners during installation is avoided, facilitating the installation of the corrugated pipe assembly. This embodiment only provides a solution where all four corners are recessed inward to form concave corners 121. In actual use, the concave corners 121 can be one, two, or three, and are set according to different requirements, with at least one being set. In this embodiment, the cross-section of the pipe wall 11 is circular. In this embodiment, an annular reinforcing rib is arranged in the corrugated groove 14 and is wound around the outer circumference of the pipe body 1, which can further improve the strength and bearing capacity of the pipe body 1.

[0049] Combined with Figures 7 - 9 , in this embodiment, an anti-loosening member 2 and a sealing member 3 are arranged at the connection of the pipe body 1. Both are sleeved in the corrugated groove 14 and are located in different corrugated grooves 14 from the sealing member 3. Among them, the sealing member 3 is closer to another pipe body 1. In this embodiment, the sealing member 3 includes a sealing ring 31, and a sealing groove 32 is opened along the circumferential direction of the sealing ring 31. The anti-loosening member 2 includes a clamping ring 21, and a bevel 22 is arranged on the circumferential direction of the clamping ring 21, so that the clamping ring 21 forms a structure with one end larger and one end smaller. In this embodiment, the anti-loosening member 2 and the sealing member 3 are arranged at one end of the pipe body 1, and a flared opening 15 is arranged at the other end of the pipe body 1. The inner diameter of the flared opening 15 is larger than the inner diameter of the pipe body 1. The flared opening 15 is communicated with the pipe body 1, and the connection between the two adopts an arc transition.

[0050] Combined with Figure 4, in this embodiment, an anti-retreat groove 17 is formed on the inner wall of the flared opening 15, and the opening of the anti-retreat groove 17 faces the pipe body 1. Meanwhile, a sealing clip 18 is arranged on the inner wall of the flared opening 15; during installation, first, the anti-retreat part 2 and the sealing part 3 are sleeved on one end of a pipe body 1, and then this end is inserted into the flared opening 15 of another pipe body 1. At this time, the anti-retreat part 2 is snapped into the anti-retreat groove 17, and the sealing clip 18 is snapped into the sealing groove 32 on the sealing part 3. Both of them fix the two pipe bodies 1 at the same time to prevent displacement between them. Meanwhile, the sealing part 3 also plays a sealing role. In this embodiment, since the anti-retreat part 2 is provided with an inclined platform 22 in the circumferential direction, forming a shape with one end larger and the other end smaller, it can be easily inserted when the two pipe bodies 1 are connected. After the inclined platform 22 is snapped into the anti-retreat groove 17, it is not easy to fall off. In this embodiment, due to the formation of the anti-retreat groove 17, an outward protrusion 16 is formed on the outer wall, and this protrusion 16 functions as a reinforcing rib, which can improve the strength of the flared opening 15.

[0051] In this embodiment, a plurality of ventilation holes 113 are arranged between the convex ring 12 and the pipe wall 11, and the ventilation holes 113 are arranged along the length direction of the pipe wall 11. The ventilation holes 113 provided in this embodiment facilitate blowing air between the convex ring 12 and the pipe wall 11. During manufacturing, the blown gas can separate the two layers of materials, facilitating the shaping device to perform shaping processing on the convex ring 12. In this embodiment, the outer shape of the convex ring 12 is basically square.

[0052] Embodiment 2

[0053] Combined with Figures 5 - 6 , the high-pressure bearing corrugated pipe and its assembly in this embodiment have a structure similar to that of Embodiment 1. The difference is that the cross-section of the pipe wall 11 is not circular, but includes a straight wall 111 and an arc wall 112, and the straight wall 111 and the arc wall 112 are alternately connected to form the pipe wall 11; the straight walls 111 are arranged opposite to each other, and the arc walls 112 are arranged opposite to each other. It should be noted that the cross-section of the corrugated pipe in this embodiment is not the traditional circular shape, but the arc wall 112 and the straight wall 111 are alternately arranged. Among them, the two arc walls 112 at both ends are arranged opposite to each other, located at the upper and lower parts of the pipe body 1, and the two straight walls 111 are arranged opposite to each other, located at the left and right parts of the pipe body 1. Since the corrugated pipe is arranged underground, the side wall is hardly affected by the pressure of the backfill soil, and the main pressure comes from the upper and lower directions. Setting the side wall as the straight wall 111 can provide more supporting force for the upper and lower arc walls 112, thereby preventing deformation due to upper and lower forces. At the same time, compared with the circular cross-section, after the inner cross-section has straight sides on both sides in this embodiment, the width of the inner wall outer shape becomes narrower and the height increases, which can reduce the construction slope requirement; at the same time, the upper and lower arc walls 112 form an arch structure, which can bear greater force. In addition, for a sewage delivery pipe, the arc-shaped bottom surface can prevent the accumulation of dirt, and this cross-section design can increase the flow rate of the liquid and prevent scaling.

[0054] Embodiment 3

[0055] Combined with Figures 10 - 11 , the corrugated pipe and its components of this embodiment are improved on the basis of Embodiment 1 or 2. The outer shape of the convex ring 12 is designed such that the upper and lower sides are straight edges and the left and right sides are arc edges. In this embodiment, the outer shape of the convex ring 12 can also be a shape with any one side being arc-shaped, any three sides being arc-shaped, or all four sides being arc-shaped. For the corrugated pipe, the arc-shaped outer wall can further increase the structural stress. The straight edge can be provided only at the bottom of the convex ring 12, and the other three sides are arc-shaped, which can improve the compactness of the backfill under both sides of the pipe.

[0056] The above schematically describes the present invention and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and, without departing from the gist of the creation of the present invention, design similar structural manners and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present invention.

Claims

1. A high pressure bellows, comprising a tube body (1), characterized in that: The outer circumference of the tube body (1) is sleeved with a plurality of spaced convex rings (12), and corrugated grooves (14) are formed between adjacent convex rings; the convex ring (12) is circumferentially provided with an inwardly recessed convex ring groove (13); a flared opening (15) is provided at one end of the tube body (1), and the inner diameter of the flared opening (15) is larger than the inner diameter of the tube body (1).

2. A high pressure bellows according to claim 1, characterized in that: The tube body (1) comprises a tube wall (11), and the vertical cross section of the tube wall (11) is circular.

3. A high pressure bellows according to claim 1, characterized in that: The tube body (1) comprises a tube wall (11), and the tube wall (11) comprises a straight wall (111) and a curved wall (112). The straight wall (111) and the curved wall (112) are alternately connected to form the tube wall (11); the straight walls (111) and the straight walls (111) are arranged opposite to each other, and the curved walls (112) and the curved walls (112) are arranged opposite to each other.

4. The high pressure bellows according to claim 1, characterized in that: An anti-retraction component (2) is provided at one end of the tube body (1), and the anti-retraction component (2) is sleeved in the corrugated groove (14).

5. A high pressure bellows according to claim 4, characterized in that: The tube body (1) is also provided with a sealing member (3), the sealing member (3) being sleeved in the corrugated groove (14), and the sealing member (3) being arranged at one end of the tube body (1).

6. A high pressure bellows according to claim 5, characterized in that: The anti-retraction component (2) and the sealing component (3) are located at the same end of the tube body (1), and are located at a different end of the tube body from the flared opening (15).

7. A high pressure bellows according to claim 6, characterized in that: An anti-retreat groove (17) is provided on the inner wall of the expanded opening (15), and the anti-retreat groove (17) opens toward the tube body (1).

8. The high pressure bellows according to claim 5, characterized in that: A sealing card (18) is arranged on the inner wall of the flared opening (15); the sealing member (3) comprises a sealing ring (31), a sealing groove (32) is provided along the circumference of the sealing ring (31), and the sealing ring (31) is clamped on the sealing card (18) through the sealing groove (32).

9. The high pressure bellows according to claim 7, characterized in that: The anti-retraction member (2) comprises a fixing ring (21), and a ramp (22) is arranged in the circumferential direction of the fixing ring (21); the fixing ring (21) is arranged in the anti-retraction groove (17).

10. The high pressure bellows according to claim 1, characterized in that: A plurality of vent holes (113) are arranged between the convex ring (12) and the tube wall (11), and the vent holes (113) are arranged along the length direction of the tube wall (11).

11. The high pressure bellows according to claim 1, characterized in that: The outer periphery of the convex ring (12) is in the shape of a square; at least one corner of the convex ring (12) is recessed toward the center to form an inner concave corner (121).

12. The high pressure bellows according to claim 1, characterized in that: The flared opening (15) is connected to the tube body (1), and a circular arc transition is adopted at the connection between the two.

13. A high pressure bellows according to any one of claims 1 to 12, characterized in that: The convex ring (12) has a square shape or any one side is arc-shaped or any two sides are arc-shaped or any three sides are arc-shaped or four sides are arc-shaped.

14. The high pressure bellows according to claim 1, characterized in that: An annular reinforcing rib is arranged inside the corrugated groove (14) and surrounds the outer circumference of the tube body (1).

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