Double-wall composite corrugated pipe

Abstract

The utility model provides a double-wall composite corrugated pipe, which relates to the field of composite corrugated pipes and comprises a framework pipe and a corrugated outer wall, a reinforcing layer is arranged in the framework pipe, reinforcing ribs are arranged in the reinforcing layer, an annular groove is formed in the outer wall of the framework pipe, a clamping groove is formed in the inner groove wall of the annular groove, a positioning groove is formed in the bottom of the annular groove, and the corrugated outer wall is arranged in the clamping groove. Meanwhile, a buffer pad is arranged at the bottom of the positioning groove, the corrugated outer wall is connected to the outer wall of the framework pipe and comprises a wear-resisting ring, a positioning block is connected to the inner ring wall of the wear-resisting ring, and an elastic clamping block is arranged on the outer wall of the positioning block. The double-wall composite corrugated pipe solves the problems that an outer side corrugated structure related to an existing double-wall composite corrugated pipe cannot be replaced independently, waste exists in overall replacement, and meanwhile the interior of a reinforcing layer is prone to being broken.

Description

Technical Field

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

[0002] Double-wall corrugated pipe is a new type of pipe with an annular outer wall and a smooth inner wall. Double-wall corrugated pipe has the characteristics of strong resistance to external pressure, low engineering cost and long service life. It is mainly used in large-scale water transmission, water supply, drainage, sewage discharge, exhaust, subway ventilation, mine ventilation and farmland irrigation with working pressure below 0.6MPa. After searching, the prior art (application number: CN202320436491.9) records "a high-strength polyvinyl chloride double-wall corrugated pipe, including a double-wall corrugated pipe body, the double-wall corrugated pipe body includes a base layer, the top of the base layer is fixedly connected with a reinforcement layer, the top of the reinforcement layer is fixedly connected with a composite layer, the top of the composite layer is fixedly connected with a wear-resistant layer, the composite layer includes a high-temperature resistant layer, the top of the high-temperature resistant layer is fixedly connected with an anti-corrosion layer, the top of the anti-corrosion layer is fixedly connected with a fireproof layer, and both ends of the double-wall corrugated pipe body are fixedly connected with connecting flanges. The utility model has the advantages of high use strength and good high temperature resistance effect through the coordinated use of a double-wall corrugated pipe body, a base layer, a reinforcement layer, a composite layer, a wear-resistant layer, a high-temperature resistant layer, an anti-corrosion layer and a fireproof layer, and can effectively solve the problem that the existing double-wall corrugated pipe has low use strength and unsatisfactory high temperature resistance, and therefore cannot meet the use requirements."

[0003] However, although the double-wall composite corrugated pipe in the prior art has achieved the effects of high strength and high temperature resistance, it still has some shortcomings: although the outer wall corrugated structure of the existing double-wall composite corrugated pipe makes it more flexible, it is also easy to wear and deform during use, resulting in damage to the pipe, and needs to be replaced in time. Under the prior art, it can only be replaced as a whole, resulting in waste of the inner skeleton pipe; secondly, the reinforcement layer involved is made of glass fiber material, which has good mechanical strength but is brittle and is prone to internal breakage when the corrugated pipe is bent. Utility Model Content

[0004] In order to overcome the defects of the prior art, a double-wall composite corrugated pipe is now provided to solve the problem that the outer corrugated structure involved in the existing double-wall composite corrugated pipe cannot be replaced separately, resulting in waste in overall replacement, and the reinforcement layer is prone to internal breakage.

[0005] To achieve the above-mentioned purpose, a double-wall composite corrugated pipe is provided, comprising: a skeleton pipe and a corrugated outer wall, a reinforcing layer is provided inside the skeleton pipe, and reinforcing ribs are provided inside the reinforcing layer, an annular groove is provided on the outer wall of the skeleton pipe, and a clamping groove is provided on the inner groove wall of the annular groove, and a positioning groove is provided on the bottom of the annular groove, and a buffer pad is provided at the bottom of the positioning groove, the corrugated outer wall is connected to the outer wall of the skeleton pipe, and the corrugated outer wall comprises a wear-resistant ring, and a positioning block is connected to the inner ring wall of the wear-resistant ring, and an elastic clamping block is provided on the outer wall of the positioning block.

[0006] Furthermore, both ends of the skeleton tube are connected with detachable flanges, and a support member is provided on the inner side of the skeleton tube and close to the flange, and the support member is set to a regular hexagonal structure made of metal.

[0007] Furthermore, the skeleton tube includes an outer wear-resistant layer, a composite layer is provided on the inner side of the wear-resistant layer, a reinforcement layer is provided on the inner side of the composite layer, and a base layer is provided on the inner side of the reinforcement layer.

[0008] Furthermore, the reinforcement layer is made of glass fiber material, and the reinforcement ribs are embedded in the glass fiber material layer, and the reinforcement rib pipes are arranged in a ring matrix in the circumferential direction.

[0009] Furthermore, the reinforcing ribs are made of metal, and the reinforcing ribs are arranged to have an undulating wave structure in the axial direction of the pipeline, and the six end points on the outer side of the support are respectively connected to the reinforcing ribs.

[0010] Furthermore, the positioning block is configured as a conical structure, and the positioning block is matched and plugged into a positioning groove provided at the bottom of the annular groove.

[0011] Furthermore, the elastic clamping block is made of metal material, and the elastic clamping block is inclined outward in the radial direction of the wear-resistant ring, and the elastic clamping block is matched and clamped with the clamping groove.

[0012] Furthermore, the wear-resistant ring is configured as a structure of two semi-ring bodies spliced ​​together, and is fixed at the connection between the semi-ring bodies by positioning bolts, while the positioning bolts are installed in countersunk holes opened on the outer wall of the semi-ring bodies.

[0013] The beneficial effects of the utility model are:

[0014] 1. After the corrugated structure of the outer wall of the double-wall composite corrugated pipe is worn, the positioning bolts of the wear-resistant ring are removed, and then the semi-ring structure of the wear-resistant ring is pulled outward, so that the positioning rod block drives the elastic block to disengage from the card slot and the positioning slot, and finally it is taken out from the ring slot, so that the corrugated outer wall can be disassembled separately without replacing the entire pipe, thereby reducing waste. During installation, the positioning blocks of the new wear-resistant ring semi-ring body are correspondingly inserted into the positioning slot, and the buffer pad is squeezed to obtain the deformation space of the elastic block so that it is inserted into the card slot. When installing another semi-ring body, its end is docked with the installed semi-ring body, and the elastic block and the card slot are connected during the docking process, and then the two semi-ring bodies are connected and fixed by the positioning bolts;

[0015] 2. The reinforcing ribs provided in the reinforcing layer of the skeleton pipe are used, and the annular arrangement of the reinforcing ribs increases the mechanical strength of the pipeline while having anti-twisting and anti-fracture effects. At the same time, the reinforcing ribs made of rigid metal materials enhance the toughness of the corrugated pipe. In addition, the support member with a regular hexagonal structure provided at the flange enhances the performance of the pipeline support effect at the pipeline flange connection port, thereby enhancing the effect of the pipeline port in resisting the internal medium tension. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view schematic diagram of the appearance structure of an embodiment of the utility model.

[0017] Figure 2 It is a front view cross-sectional structural schematic diagram of an embodiment of the utility model.

[0018] Figure 3 It is a schematic diagram of the axial cross-sectional structure of the skeleton tube of an embodiment of the utility model.

[0019] Figure 4 For the utility model embodiment Figure 2 Schematic diagram of the structure at point A in the middle.

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the corrugated outer wall of an embodiment of the utility model.

[0021] In the figure: 1. skeleton tube; 11. wear-resistant layer; 12. composite layer; 13. reinforcement layer; 14. reinforcement ribs; 15. base layer; 16. support member; 17. ring groove; 18. clamping groove; 19. buffer pad; 2. corrugated outer wall; 21. wear-resistant ring; 22. positioning block; 23. elastic clamping block. DETAILED DESCRIPTION

[0022] Reference Figures 1 to 5As shown, the utility model provides a double-wall composite corrugated pipe, comprising: a skeleton pipe 1 and a corrugated outer wall 2, a reinforcing layer 13 is provided inside the skeleton pipe 1, and reinforcing ribs 14 are provided inside the reinforcing layer 13, an annular groove 17 is provided on the outer wall of the skeleton pipe 1, and a clamping groove 18 is provided on the inner groove wall of the annular groove 17, and a positioning groove is provided at the bottom of the annular groove 17, and a buffer pad 19 is provided at the bottom of the positioning groove, the corrugated outer wall 2 is connected to the outer wall of the skeleton pipe 1, and the corrugated outer wall 2 comprises a wear-resistant ring 21, and a positioning block 22 is connected to the inner ring wall of the wear-resistant ring 21, and an elastic clamping block 23 is provided on the outer wall of the positioning block 22.

[0023] In this embodiment, the skeleton tube 1 and the corrugated outer wall 2 constitute the main structure of the double-wall composite corrugated tube involved in this application.

[0024] Specifically, the outer ring wall of the wear-resistant ring 21 can be set as a plane or an arc-shaped surface, and the wear-resistant ring 21 is made of wear-resistant material.

[0025] Specifically, the annular groove 17 is opened along the circumferential direction of the skeleton tube 1 , and four positioning grooves arranged in an annular matrix are opened in one annular groove 17 .

[0026] like Figure 2 and Figure 3 As shown, both ends of the skeleton tube 1 are connected with detachable flanges, and a support member 16 is provided on the inner side of the skeleton tube 1 and near the flange, and the support member 16 is set to a regular hexagonal structure of metal material, the skeleton tube 1 includes an outer wear-resistant layer 11, and a composite layer 12 is provided on the inner side of the wear-resistant layer 11, and a reinforcing layer 13 is provided on the inner side of the composite layer 12, and a base layer 15 is provided on the inner side of the reinforcing layer 13, the reinforcing layer 13 is set to a glass fiber material, and reinforcing ribs 14 are embedded in the glass fiber material layer, and the reinforcing ribs 14 are arranged in a ring matrix in the circumferential direction of the pipeline, the reinforcing ribs 14 are set to a metal material, and the reinforcing ribs 14 are set to an undulating wave structure in the axial direction of the pipeline, and the six end points on the outer side of the support member 16 are respectively connected to the reinforcing ribs 14.

[0027] Specifically, the support member 16 is only provided on the inner side of the pipeline at the flange.

[0028] Specifically, the composite layer 12 and base layer 15 involved are the same as the relevant structural materials involved in the comparative document.

[0029] As a preferred embodiment, by providing the reinforcing ribs 14 connected to the support member 16, on the one hand, it is convenient to stabilize the support member 16, and on the other hand, the axial torsional resistance of the reinforcing ribs 14 in the pipeline is enhanced.

[0030] like Figure 4 and Figure 5As shown, the positioning block 22 is set to a conical structure, and the positioning block 22 is matched and plugged with the positioning groove opened at the bottom of the ring groove 17, the elastic clamp block 23 is set to a metal material, and the elastic clamp block 23 is inclined outward in the radial direction of the wear-resistant ring 21, and the elastic clamp block 23 is matched and plugged with the clamping groove 18. The wear-resistant ring 21 is set to a splicing structure of two semi-ring bodies, and is fixed at the connection between the semi-ring bodies by positioning bolts, and the positioning bolts are installed in the countersunk holes opened on the outer wall of the semi-ring body.

[0031] It should be noted that a plug-in block is provided at the end of one of the semi-ring bodies, and a screw hole is provided on the outer wall of one side of the plug-in block. A socket is provided on the end surface of the other semi-ring body, and a positioning bolt is screwed on the outside of the socket. Two positioning blocks 22 are provided on the inner wall of each semi-ring body.

[0032] It should be noted that the semi-ring body is a prefabricated part, and the semi-ring body of corresponding size is manufactured according to the size of the skeleton tube 1.

[0033] As a preferred embodiment, for a relatively long corrugated pipe, simply replacing the outer wear-resistant ring 21 saves manpower and materials compared to replacing the entire pipe and then transporting and installing the pipe.

[0034] When in use, after the corrugated structure of the outer wall of the double-wall composite corrugated pipe is worn, the positioning bolts of the wear-resistant ring are removed, and then the semi-ring structure of the wear-resistant ring is pulled outward, so that the positioning rod block drives the elastic block to disengage from the slot and the positioning slot, and finally it is taken out from the ring groove, so that the corrugated outer wall can be disassembled separately without replacing the entire pipe, thereby reducing waste. During installation, the positioning blocks of the new wear-resistant ring semi-ring body are correspondingly inserted into the positioning slot, and the buffer pad is squeezed to obtain the deformation space of the elastic block so that it can be inserted into the slot. Then, when installing another semi-ring body, its end is docked with the installed semi-ring body, and the elastic block and the slot are connected during the docking process, and then the two semi-ring bodies are connected and fixed by the positioning bolts.

[0035] The double-wall composite corrugated pipe of the utility model can effectively solve the problem that the outer corrugated structure involved in the existing double-wall composite corrugated pipe cannot be replaced separately, resulting in waste in the overall replacement, and the reinforcing layer is prone to internal breakage. It is realized on the basis of the existing double-wall composite corrugated pipe technology, and the outer wall of the double-wall composite corrugated pipe can be easily disassembled and replaced separately, making maintenance simpler and cost-effective. At the same time, the mechanical strength of the corrugated pipe is enhanced and the anti-twisting and anti-breakage performance is increased.

Claims

1. A double-wall composite corrugated pipe, comprising: A skeleton tube (1) and a corrugated outer wall (2), characterized in that: a reinforcing layer (13) is provided inside the skeleton tube (1), and reinforcing ribs (14) are provided inside the reinforcing layer (13); an annular groove (17) is provided on the outer wall of the skeleton tube (1), and a clamping groove (18) is provided on the inner groove wall of the annular groove (17); a positioning groove is provided on the bottom of the annular groove (17), and a buffer pad (19) is provided on the bottom of the positioning groove; the corrugated outer wall (2) is connected to the outer wall of the skeleton tube (1), and the corrugated outer wall (2) includes a wear-resistant ring (21), and a positioning block (22) is connected to the inner ring wall of the wear-resistant ring (21), and an elastic clamping block (23) is provided on the outer wall of the positioning block (22).

2. A double-wall composite corrugated pipe according to claim 1, characterized in that: Both ends of the skeleton tube (1) are connected with detachable flanges, and a support member (16) is provided on the inner side of the skeleton tube (1) and close to the flange, and the support member (16) is configured as a regular hexagonal structure made of metal.

3. The double-wall composite corrugated pipe according to claim 1, characterized in that: The skeleton tube (1) comprises an outer wear-resistant layer (11), a composite layer (12) is provided on the inner side of the wear-resistant layer (11), a reinforcement layer (13) is provided on the inner side of the composite layer (12), and a base layer (15) is provided on the inner side of the reinforcement layer (13).

4. The double-wall composite corrugated pipe according to claim 1, characterized in that: The reinforcing layer (13) is made of glass fiber material, and the reinforcing ribs (14) are embedded inside the glass fiber material layer, and the reinforcing ribs (14) are arranged in a ring matrix in the circumferential direction of the pipe.

5. The double-wall composite corrugated pipe according to claim 1, characterized in that: The reinforcing ribs (14) are made of metal, and the reinforcing ribs (14) are arranged to have an undulating wave structure in the axial direction of the pipeline, and six end points on the outside of the support member (16) are respectively connected to the reinforcing ribs (14).

6. The double-wall composite corrugated pipe according to claim 1, characterized in that: The positioning block (22) is configured as a conical structure, and the positioning block (22) is matched and plugged into a positioning groove provided at the bottom of the annular groove (17).

7. The double-wall composite corrugated pipe according to claim 1, characterized in that: The elastic clamping block (23) is made of metal, and the elastic clamping block (23) is inclined outward in the radial direction of the wear-resistant ring (21), and the elastic clamping block (23) is matched and clamped with the clamping groove (18).

8. The double-wall composite corrugated pipe according to claim 1, characterized in that: The wear-resistant ring (21) is configured as a structure of two semi-ring bodies spliced ​​together, and is fixed at the connection between the semi-ring bodies by means of positioning bolts, while the positioning bolts are installed in countersunk holes provided on the outer wall of the semi-ring bodies.

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