High-strength HDPE double-wall corrugated pipe

Abstract

The high-strength HDPE double-wall corrugated pipe comprises a corrugated pipe body, a first pipe opening is formed in one end of the corrugated pipe body, a second pipe opening is formed in the end, away from the first pipe opening, of the corrugated pipe body, and outer reinforcing rings are arranged on the outer wall of the corrugated pipe body at equal intervals in a sleeving mode. Reinforcing blocks are arranged in the corrugated pipe body at equal intervals, one ends of the reinforcing blocks extend to the inner side of the corrugated pipe body, the included angle between every two adjacent reinforcing blocks is 30 degrees, arc-shaped reinforcing strips are arranged in the positions, between the reinforcing blocks, of the corrugated pipe body, and one ends of the arc-shaped reinforcing strips extend to the inner side of the corrugated pipe body. A PA high-temperature-resistant inner pipe is arranged on the inner wall of the corrugated pipe body, and a PVC flame-retardant inner pipe is arranged on the inner wall of the PA high-temperature-resistant inner pipe. The phenomenon that the HDPE double-wall corrugated pipe is loosened and falls off after being installed and connected is reduced, the application range of the HDPE double-wall corrugated pipe is widened, and the service life of the HDPE double-wall corrugated pipe is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of pipelines, in particular to a high-strength HDPE double-wall corrugated pipe. Background Art

[0002] HDPE double-wall corrugated pipe refers to high-density polyethylene double-wall corrugated pipe, which is a new type of pipe with an annular outer wall and a smooth inner wall. Because HDPE double-wall corrugated pipe has great advantages over other pipes, HDPE double-wall corrugated pipe is widely used.

[0003] Reference publication number CN212986306U discloses a high-strength HDPE double-wall corrugated pipe, which includes an inner pipe made of HDPE and an outer pipe made of HDPE. The outer pipe is evenly distributed with corrugated sections, the corrugated sections are hollow, the inner cavity of the corrugated sections is provided with a reinforcing block, the reinforcing block matches the inner wall of the corrugated section, and the reinforcing block is provided with reinforcing ribs symmetrically distributed along the midline. The strength of the corrugated section is improved by arranging the reinforcing block in the corrugated section, and the reinforcing ribs symmetrically distributed in the reinforcing block can make the corrugated section more evenly stressed and have a higher pressure bearing capacity. Strong, thereby improving the strength of the double-wall corrugated pipe, even if the pipe is squeezed, it is not easy to deform and break, and the service life of the double-wall corrugated pipe is extended. According to the above, although the HDPE double-wall corrugated pipe can be well applied, it is usually not convenient to lock and install the HDPE double-wall corrugated pipe after installation and connection, which makes the HDPE double-wall corrugated pipe easy to loosen and fall off after installation and connection. In addition, the high temperature resistance and flame retardant properties of the HDPE double-wall corrugated pipe are general, and it is difficult to use it in a high temperature environment, which has certain limitations. Utility Model Content

[0004] The utility model aims to provide a high-strength HDPE double-wall corrugated pipe to solve the problem in the above background technology that although the HDPE double-wall corrugated pipe can be well applied, it is usually inconvenient to lock and install the HDPE double-wall corrugated pipe after installation and connection, so that the HDPE double-wall corrugated pipe is prone to loosening and falling off after installation and connection. In addition, the high-temperature resistance and flame retardancy of the HDPE double-wall corrugated pipe are average, and it is difficult to use it in a high-temperature environment, which has certain limitations.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-strength HDPE double-wall corrugated pipe, comprising a corrugated pipe body, a first pipe opening is arranged at one end of the corrugated pipe body, a second pipe opening is arranged at the end of the corrugated pipe body away from the first pipe opening, an outer reinforcement ring is sleeved on the outer wall of the corrugated pipe body with equal intervals, and reinforcement blocks are arranged inside the corrugated pipe body with equal intervals, one end of the reinforcement blocks extends to the inner side of the corrugated pipe body, the angle between adjacent reinforcement blocks is thirty degrees, and arc-shaped reinforcement strips are arranged inside the corrugated pipe body between the reinforcement blocks, and one end of the arc-shaped reinforcement strips extends to the inner side of the corrugated pipe body.

[0006] Preferably, a PA high temperature resistant inner tube is provided on the inner wall of the corrugated pipe body, and a PVC flame retardant inner tube is provided on the inner wall of the PA high temperature resistant inner tube. The setting of the PVC flame retardant inner tube and the PA high temperature resistant inner tube can improve the temperature resistance and flame retardancy of the HDPE double-wall corrugated pipe.

[0007] Preferably, a first flange is provided on the outer wall of the first pipe opening close to one end of the corrugated pipe body, and first positioning holes with equal intervals are provided inside the first flange. Both ends of the first positioning holes extend to the outside of the first flange. Through the arrangement of the first positioning holes and the first flange, the HDPE double-wall corrugated pipe can be locked and placed after installation and connection with the help of bolts.

[0008] Preferably, a second flange is provided on the outer wall of the second pipe opening close to one end of the corrugated pipe body, and second positioning holes with equal intervals are provided inside the second flange. Both ends of the second positioning holes extend to the outside of the second flange. Through the arrangement of the second positioning holes and the second flange, the HDPE double-wall corrugated pipe can be locked and placed after installation and connection with the help of bolts.

[0009] Preferably, first gaskets are provided on the outer walls of the first flanges outside the first positioning holes, and the angle between adjacent first positioning holes is ninety degrees. The first gaskets are provided to reduce the loosening of bolts connected to the first positioning holes.

[0010] Preferably, a second gasket is provided on the outer wall of the second flange outside the second positioning hole, and the angle between adjacent second positioning holes is ninety degrees. The second gasket is provided to reduce the loosening of the bolts connected to the second positioning holes.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the high-strength HDPE double-wall corrugated pipe not only reduces the phenomenon of loosening and falling off of the HDPE double-wall corrugated pipe after installation and connection, but also improves the applicable scope of the HDPE double-wall corrugated pipe and prolongs the service life of the HDPE double-wall corrugated pipe;

[0012] (1) By inserting the second pipe opening and the first pipe opening into the external pipe, and then using bolts to penetrate the first positioning hole and the second positioning hole respectively and screw them into the flange of the external pipe, the HDPE double-wall corrugated pipe can be locked and placed between the two sets of external pipes, thereby reducing the phenomenon of loosening and falling off of the HDPE double-wall corrugated pipe after installation and connection;

[0013] (2) By setting up the PVC flame-retardant inner tube and the PA high-temperature resistant inner tube, the high-temperature resistance and flame-retardant properties of the corrugated pipe body can be improved, so that the HDPE double-wall corrugated pipe can be used in high-temperature environments, thereby increasing the application range of the HDPE double-wall corrugated pipe;

[0014] (3) By arranging a plurality of reinforcement blocks and arc-shaped reinforcement strips inside the corrugated pipe body and arranging a plurality of external reinforcement rings on the outer wall of the corrugated pipe body, the strength of the corrugated pipe body can be improved to reduce the bending and breakage of the corrugated pipe body, thereby extending the service life of the HDPE double-wall corrugated pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the utility model from a top view;

[0016] Figure 2 This is a schematic diagram of the front view structure of the bellows body of the utility model;

[0017] Figure 3 This is a side view of the structure of the utility model;

[0018] Figure 4 For this utility model Figure 3 Enlarged structural diagram at A in the middle.

[0019] In the figure: 1. bellows body; 2. outer reinforcement ring; 3. first pipe opening; 4. second pipe opening; 5. first flange; 6. first positioning hole; 601. first gasket; 7. second flange; 8. second positioning hole; 801. second gasket; 9. arc reinforcement strip; 10. reinforcement block; 11. PA high temperature resistant inner tube; 12. PVC flame retardant inner tube. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4The utility model provides an embodiment: a high-strength HDPE double-wall corrugated pipe, comprising a corrugated pipe body 1, a PA high-temperature resistant inner pipe 11 is arranged on the inner wall of the corrugated pipe body 1, and a PVC flame-retardant inner pipe 12 is arranged on the inner wall of the PA high-temperature resistant inner pipe 11;

[0022] When in use, the PVC flame-retardant inner tube 12 and the PA high-temperature resistant inner tube 11 are provided to improve the heat resistance and flame retardancy of the HDPE double-wall corrugated pipe.

[0023] A first pipe opening 3 is provided at one end of the bellows body 1, and a first flange 5 is sleeved on the outer wall of the first pipe opening 3 close to one end of the bellows body 1. The first flange 5 is provided with first positioning holes 6 at equal intervals inside, and both ends of the first positioning holes 6 extend to the outside of the first flange 5;

[0024] When in use, the first positioning hole 6 and the first flange 5 are arranged so as to lock and place the HDPE double-wall corrugated pipe after installation and connection with the aid of bolts;

[0025] First gaskets 601 are provided on the outer walls of the first flanges 5 outside the first positioning holes 6, and the angle between adjacent first positioning holes 6 is ninety degrees;

[0026] When in use, the first gasket 601 is provided to reduce the loosening of the bolt connected to the first positioning hole 6;

[0027] The second pipe opening 4 is arranged at one end of the bellows body 1 away from the first pipe opening 3, and a second flange 7 is sleeved on the outer wall of the second pipe opening 4 close to one end of the bellows body 1, and second positioning holes 8 with equal spacing are arranged inside the second flange 7, and both ends of the second positioning holes 8 extend to the outside of the second flange 7;

[0028] When in use, the second positioning hole 8 and the second flange 7 are arranged so that the HDPE double-wall corrugated pipe can be locked and placed with the help of bolts after installation and connection;

[0029] Second gaskets 801 are provided on the outer walls of the second flanges 7 outside the second positioning holes 8, and the angle between adjacent second positioning holes 8 is 90 degrees;

[0030] When in use, the second gasket 801 is provided to reduce the loosening of the bolt connected to the second positioning hole 8;

[0031] An outer reinforcement ring 2 with equal spacing is set on the outer wall of the bellows body 1, and reinforcement blocks 10 with equal spacing are set inside the bellows body 1. One end of the reinforcement block 10 extends to the inner side of the bellows body 1. The angle between adjacent reinforcement blocks 10 is thirty degrees. Arc-shaped reinforcement strips 9 are set inside the bellows body 1 between the reinforcement blocks 10, and one end of the arc-shaped reinforcement strips 9 extends to the inner side of the bellows body 1.

[0032] When the embodiment of the present application is in use, firstly, the second pipe opening 4 and the first pipe opening 3 are respectively plugged into the two groups of external pipes, so that the HDPE double-wall corrugated pipe can be plug-in-connected, and then the HDPE double-wall corrugated pipe can be locked and placed between the two groups of external pipes by means of bolts that penetrate the first positioning hole 6 and the second positioning hole 8 respectively and screw them into the flange of the external pipe, so as to reduce the loosening phenomenon of the HDPE double-wall corrugated pipe after installation and connection. Then, by arranging a plurality of reinforcement blocks 10 and arc-shaped reinforcement strips 9 inside the corrugated pipe body 1, and arranging a plurality of outer reinforcement rings 2 on the outer wall of the corrugated pipe body 1, the strength of the corrugated pipe body 1 can be improved to reduce the bending and breakage phenomenon of the HDPE double-wall corrugated pipe. Finally, by arranging the PVC flame-retardant inner tube 12 and the PA high-temperature resistant inner tube 11, the high-temperature resistance and flame-retardant properties of the corrugated pipe body 1 can be improved, so that the HDPE double-wall corrugated pipe can be used in a high-temperature environment, thereby completing the use of the HDPE double-wall corrugated pipe.

Claims

1. A high-strength HDPE double-wall corrugated pipe, characterized in that: The invention comprises a bellows body (1), wherein one end of the bellows body (1) is provided with a first pipe opening (3), and the end of the bellows body (1) away from the first pipe opening (3) is provided with a second pipe opening (4), and the outer wall of the bellows body (1) is sleeved with an outer reinforcement ring (2) with equal spacing, and the interior of the bellows body (1) is provided with reinforcement blocks (10) with equal spacing, and one end of each reinforcement block (10) extends to the inner side of the bellows body (1), and the angle between adjacent reinforcement blocks (10) is thirty degrees, and the interior of the bellows body (1) between the reinforcement blocks (10) is provided with arc-shaped reinforcement strips (9), and one end of each arc-shaped reinforcement strip (9) extends to the inner side of the bellows body (1), and the bellows body A PA high temperature resistant inner tube (11) is arranged on the inner wall of the PA high temperature resistant inner tube (11), a PVC flame retardant inner tube (12) is arranged on the inner wall of the PA high temperature resistant inner tube (11), a first flange (5) is sleeved on the outer wall of the first pipe opening (3) close to one end of the corrugated pipe body (1), the first flange (5) is provided with first positioning holes (6) at equal intervals inside, both ends of the first positioning holes (6) extend to the outside of the first flange (5), a second flange (7) is sleeved on the outer wall of the second pipe opening (4) close to one end of the corrugated pipe body (1), the second flange (7) is provided with second positioning holes (8) at equal intervals inside, both ends of the second positioning holes (8) extend to the outside of the second flange (7).

2. The high-strength HDPE double-wall corrugated pipe according to claim 1, characterized in that: A first gasket (601) is provided on the outer wall of the first flange (5) outside the first positioning hole (6), and the angle between adjacent first positioning holes (6) is ninety degrees.

3. The high-strength HDPE double-wall corrugated pipe according to claim 1, characterized in that: A second gasket (801) is provided on the outer wall of the second flange (7) outside the second positioning hole (8), and the angle between adjacent second positioning holes (8) is ninety degrees.

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