Anti-cracking multi-layer winding pipe

Abstract

The utility model belongs to the technical field of winding pipes, and particularly relates to an anti-cracking multi-layer winding pipe which comprises a winding pipe body, two limiting rings distributed at intervals are arranged at the tail end of the winding pipe body, and a connecting pipe section is fixed to the head end of the winding pipe body. The connecting pipe section comprises a flat pipe section and a flaring pipe section which are fixed into a whole, the inner wall of the flat pipe section is provided with a clamping ring, and inner side hole positions of the two limiting rings are clamping grooves capable of containing the clamping ring; according to the anti-cracking multi-layer winding pipe, splicing can be achieved by inserting the tail end of the winding pipe body into the connecting pipe section at the head end of the other winding pipe body, the clamping ring and the clamping groove are matched to improve the splicing stability of the winding pipe bodies, meanwhile, the anti-cracking multi-layer winding pipe further has good sealing performance, the structure enables splicing of the winding pipe bodies to be more convenient, and the splicing efficiency is improved. Other accessories are not needed, so that the cost is reduced; and due to the double-layer structural form of the winding pipe body and the arrangement of the two sets of flexible limiting rings, the structural strength of the winding pipe body is improved, and the service life of the winding pipe body is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of winding pipes, and in particular relates to an anti-cracking multi-layer winding pipe. Background Art

[0002] Wrap pipe, large diameter wrap pipe, double wall wrap pipe and hollow wrap pipe are a kind of pipe made of high density polyethylene (HDPE) as raw material and formed by wrapping and welding. Due to its unique forming process, it can produce pipes with a diameter of up to 3 meters, which is difficult to accomplish with other production processes. High density polyethylene (HDPE) not only guarantees the product forming process and product quality due to its excellent melting and welding performance, but also provides a variety of reliable methods for construction connection, such as electric hot melting welding, heat shrink connection, etc. At the same time, this is also an important reason why leakage rarely occurs. It is for this reason that this kind of pipe has a unique environmental protection function that other pipes do not have. This provides a very effective method for the pollution prevention and control that people are currently concerned about. Since steel plastic is usually added inside the wrap pipe, it has a good anti-cracking function.

[0003] However, when most of the spiral wound pipes on the market are used, other accessories, such as stainless steel sleeves, are usually used to splice adjacent spiral wound pipes, and sealing treatment is required after splicing, which is very troublesome. Utility Model Content

[0004] In order to solve the above problems existing in the prior art, the utility model provides an anti-cracking multi-layer winding pipe, which has the characteristics of being easy to use, easy to splice and having good sealing performance.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a crack-proof multi-layer winding tube, comprising a winding tube body, the tail end of the winding tube body is provided with two spaced-apart limiting rings, and the head end is fixed with a connecting pipe section; the connecting pipe section comprises a flat pipe section and a flared pipe section that are solidly integrated, the tail end of the winding tube body can be embedded in the flat pipe section, and a snap ring is provided on the inner wall of the flat pipe section, the inner side holes of the two limiting rings are snap grooves that can accommodate the snap rings; the side surface of the snap ring close to the flared pipe section is an arc-shaped surface.

[0006] As a preferred technical solution of the utility model, the inner wall of the flat pipe section also has a guide ring, and the end face of the guide ring is an inclined surface, and the thicker end of the guide ring is close to the winding pipe body.

[0007] As a preferred technical solution of the present invention, the thickness of the thicker end of the guide ring is equal to the wall thickness of the winding tube body.

[0008] As an optimal technical solution of the utility model, the winding tube body includes a winding tube inner tube and a winding tube outer tube sleeved on the winding tube inner tube, and there is a cavity between the inner wall of the winding tube outer tube and the outer wall of the winding tube inner tube; the inner wall of the winding tube outer tube is provided with a plurality of No. 1 flexible limit rings evenly distributed along its length direction, and the outer wall of the winding tube inner tube is provided with a plurality of No. 2 flexible limit rings evenly distributed along its length direction; the cross-sections of the No. 1 flexible limit ring and the No. 2 flexible limit ring are both isosceles triangle structures, and the No. 1 flexible limit ring and the No. 2 flexible limit ring are engaged with each other.

[0009] As a preferred technical solution of the utility model, through holes distributed along the axial direction are opened in the outer tube of the winding tube and the inner tube of the winding tube, and metal reinforcing wires are arranged in the through holes.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: the anti-cracking multi-layer winding tube of the utility model can be spliced ​​by inserting the tail end of the winding tube body into the connecting pipe section at the head end of another winding tube body, and the combination of the snap ring and the snap groove improves the stability of the splicing of the winding tube body, and also has good sealing performance. This structure makes the splicing of the winding tube body more convenient, without the need for other accessories, and also reduces costs; the double-layer structure of the winding tube body, combined with the setting of two sets of flexible limit rings, improves the structural strength of the winding tube body and extends the service life of the winding tube body. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the cross-sectional structure of the connecting pipe section in the utility model;

[0014] Figure 3 It is a schematic diagram of the cross-sectional structure of the winding tube body in the utility model;

[0015] In the figure: 1. winding tube body; 2. limiting ring; 3. snap-fitting groove; 4. connecting pipe section; 5. flat pipe section; 6. flared pipe section; 7. guide ring; 8. snap-fitting ring; 9. winding tube outer tube; 10. winding tube inner tube; 11. cavity; 12. through hole; 13. metal reinforcing wire; 14. flexible limiting ring No. 1; 15. flexible limiting ring No. 2. DETAILED DESCRIPTION

[0016] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. 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.

[0017] See also Figure 1-Figure 3 The utility model provides the following technical solutions: a crack-proof multi-layer winding tube, comprising a winding tube body 1, the tail end of the winding tube body 1 is provided with two spaced limiting rings 2, and the head end is fixed with a connecting pipe section 4; the connecting pipe section 4 includes a flat pipe section 5 and a flared pipe section 6 that are solidly integrated, the tail end of the winding tube body 1 can be embedded in the flat pipe section 5, and a snap ring 8 is provided on the inner wall of the flat pipe section 5, and the inner side holes of the two limiting rings 2 are snap grooves 3 that can accommodate the snap rings 8; the side surface of the snap ring 8 close to the flared pipe section 6 is an arc surface, and the snap ring 8 and the limiting ring 2 are both rubber structural parts. When in use, the tail end of the winding tube body 1 is inserted into the connecting pipe section 4 at the head end of another winding tube body 1, and the flat pipe section 5 and the flared pipe section 6 that are solidly integrated into the connecting pipe section 4 are fixed to the connecting pipe section 4. The pipe section 6 and the expanded pipe section 6 are used to guide the insertion of the tail end of the winding pipe body 1, which is conducive to the reliable insertion of the tail end of the winding pipe body 1 into the flat pipe section 5 for splicing. The side surface of the snap ring 8 close to the expanded pipe section 6 is an arc surface, which makes the insertion of the tail end of the winding pipe body 1 more labor-saving. When the snap ring 8 is embedded in the snap groove 3, the splicing of the winding pipe body 1 is realized, and the stability and sealing of the splicing of the winding pipe body 1 are guaranteed. In addition, in actual use, the groove width of the snap groove 3 can be designed to be equal to the axial thickness of the snap ring 8, and the inner diameter of the snap ring 8 is slightly smaller than the outer diameter of the winding pipe body 1. This design can squeeze the snap ring 8 after the winding pipe body 1 is spliced, thereby further improving the sealing performance of the winding pipe body 1 after splicing.

[0018] Specifically, according to the attached Figure 1 and attached Figure 2 As shown, in this embodiment, the inner wall of the flat pipe section 5 also has a guide ring 7, and the end face of the guide ring 7 is an inclined surface. The thicker end of the guide ring 7 is close to the winding tube body 1. When conveying the liquid medium, it is used to guide the liquid medium and reduce the resistance of the liquid medium to be conveyed between the winding tube body 1.

[0019] Specifically, according to the attached Figure 1 and attached Figure 2 As shown, in this embodiment, the thickness of the thicker end of the guide ring 7 is equal to the wall thickness of the winding tube body 1, thereby reducing the resistance of the liquid medium to be transported between the winding tube bodies 1.

[0020] Specifically, according to the attached Figure 1 and attached Figure 3As shown, in this embodiment, the winding tube body 1 includes a winding tube inner tube 10 and a winding tube outer tube 9 sleeved on the winding tube inner tube 10, and a cavity 11 is formed between the inner wall of the winding tube outer tube 9 and the outer wall of the winding tube inner tube 10; a plurality of No. 1 flexible limit rings 14 are arranged on the inner wall of the winding tube outer tube 9 at equal intervals along its length direction, and a plurality of No. 2 flexible limit rings 15 are arranged on the outer wall of the winding tube inner tube 10 at equal intervals along its length direction; the cross-sections of the No. 1 flexible limit ring 14 and the No. 2 flexible limit ring 15 are both isosceles triangle structures, and the No. 1 flexible limit ring 14 and the No. 2 flexible limit ring 15 are engaged with each other. When the winding tube body 1 transports heat medium, due to thermal expansion and contraction, the winding tube body 1 will produce axial and radial Deformation, the No. 1 flexible limit ring 14 and the No. 2 flexible limit ring 15 engage with each other to limit the deformation of the winding tube body 1. When the winding tube body 1 is axially deformed, the inner tube 10 of the winding tube that contacts the heat medium must be deformed. The No. 2 flexible limit ring 15 is displaced but limited by the No. 1 flexible limit ring 14, thereby reducing the axial deformation of the winding tube body 1; when radially deformed, the inner tube 10 of the winding tube expands, and the No. 2 flexible limit ring 15 is displaced toward the outside but limited by the No. 1 flexible limit ring 14, thereby reducing the radial deformation of the winding tube body 1, ensuring the reliable use of the winding tube body 1 and extending the service life of the winding tube body 1; the No. 1 flexible limit ring 14 and the No. 2 flexible limit ring 15 are also rubber structural parts.

[0021] Specifically, according to the attached Figure 1 and attached Figure 3 As shown, in this embodiment, through holes 12 distributed along the axial direction are opened in the outer tube 9 and the inner tube 10 of the winding tube, and metal reinforcing wires 13 are arranged in the through holes 12, which further improves the structural strength of the winding tube body 1 and improves the anti-cracking performance of the winding tube body 1.

[0022] Working principle and use process of the utility model: When the winding tube body 1 of the utility model is used, the tail end of the winding tube body 1 is inserted into the connecting tube section 4 at the head end of another winding tube body 1. The connecting tube section 4 is solidly formed into a flat tube section 5 and a flared tube section 6. The flared tube section 6 is used to guide the insertion of the tail end of the winding tube body 1, which is conducive to the reliable insertion of the tail end of the winding tube body 1 into the flat tube section 5 to achieve splicing. The side surface of the clamping ring 8 close to the flared tube section 6 is an arc surface, which makes the insertion of the tail end of the winding tube body 1 more labor-saving. When the clamping ring 8 is embedded in the clamping groove 3, the splicing of the winding tube body 1 is achieved, and at the same time, the stability and sealing of the splicing of the winding tube body 1 are guaranteed;

[0023] When the winding pipe body 1 transports heat medium, due to thermal expansion and contraction, the winding pipe body 1 will produce axial and radial deformations. The first flexible limiting ring 14 and the second flexible limiting ring 15 engage with each other to limit the deformation of the winding pipe body 1. When the winding pipe body 1 produces axial deformation, the inner pipe 10 of the winding pipe that contacts the heat medium will inevitably deform. The second flexible limiting ring 15 is displaced but limited by the first flexible limiting ring 14, thereby reducing the axial deformation of the winding pipe body 1.

[0024] During radial deformation, the inner tube 10 of the winding tube expands, and similarly the No. 2 flexible limiting ring 15 moves outward but is restricted by the No. 1 flexible limiting ring 14, thereby reducing the radial deformation of the winding tube body 1, ensuring the reliable use of the winding tube body 1, and extending the service life of the winding tube body 1.

[0025] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limiting, and thus other examples of the exemplary embodiments may have different values.

[0026] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0027] In addition, in the description of the embodiments of the present invention, unless otherwise clearly stipulated and limited, the terms "installed", "connected", "connected", "set", "provided with", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be internal communication between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A crack-resistant multi-layer spiral wound pipe, comprising a spiral wound pipe body (1), characterized in that: The tail end of the winding tube body (1) is provided with two spaced apart limiting rings (2), and the head end is fixed with a connecting pipe section (4); the connecting pipe section (4) comprises a flat pipe section (5) and a flared pipe section (6) which are fixed together; the tail end of the winding tube body (1) can be embedded in the flat pipe section (5), and a snap ring (8) is provided on the inner wall of the flat pipe section (5); the inner holes of the two limiting rings (2) are snap grooves (3) which can accommodate the snap rings (8); the side surface of the snap ring (8) close to the flared pipe section (6) is an arc surface.

2. The anti-cracking multi-layer winding pipe according to claim 1, characterized in that: The inner wall of the flat pipe section (5) also has a guide ring (7), and the end surface of the guide ring (7) is an inclined surface, and the thicker end of the guide ring (7) is close to the winding pipe body (1).

3. The anti-cracking multi-layer winding pipe according to claim 2, characterized in that: The thickness of the thicker end of the guide ring (7) is equal to the wall thickness of the winding tube body (1).

4. The anti-cracking multi-layer winding pipe according to claim 1, characterized in that: The winding tube body (1) comprises a winding tube inner tube (10) and a winding tube outer tube (9) sleeved on the winding tube inner tube (10); a cavity (11) is formed between the inner wall of the winding tube outer tube (9) and the outer wall of the winding tube inner tube (10); a plurality of No. 1 flexible limiting rings (14) are arranged on the inner wall of the winding tube outer tube (9) at equal intervals along its length direction, and a plurality of No. 2 flexible limiting rings (15) are arranged on the outer wall of the winding tube inner tube (10) at equal intervals along its length direction; the cross-sections of the No. 1 flexible limiting ring (14) and the No. 2 flexible limiting ring (15) are both isosceles triangle structures, and the No. 1 flexible limiting ring (14) and the No. 2 flexible limiting ring (15) are engaged with each other.

5. The anti-cracking multi-layer winding pipe according to claim 4, characterized in that: Through holes (12) distributed along the axial direction are provided in both the outer tube (9) of the winding tube and the inner tube (10) of the winding tube, and metal reinforcing wires (13) are provided in the through holes (12).

Images