High-strength compression-resistant PE corrugated pipe

Abstract

The utility model provides a high-strength compression-resistant PE (polyethylene) corrugated pipe, which solves the problems of elastic resetting and the like of the corrugated pipe and comprises a main pipe body with a corrugated pipe structure, a reinforcing shell fixedly attached to the outer side of the main pipe body along the circumferential direction, an auxiliary pipe body with a corrugated pipe structure arranged on the outer side of the reinforcing shell, and a cross supporting mechanism arranged at the upper end of the reinforcing shell. Locking supporting mechanisms are arranged between the two sides and the lower end of the reinforcing shell, and the space between the reinforcing shell and the main pipe body and the space between the reinforcing shell and the auxiliary pipe body are filled with sealant. The utility model has the advantages of good reset effect, good compression resistance and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of corrugated pipes, and particularly relates to a high-strength and compression-resistant PE corrugated pipe. Background Art

[0002] The PE corrugated pipe, that is, a plastic protection sleeve extruded and formed from polyethylene material, is also called a corrugated pipe because its inner and outer parts are annular corrugated, and it plays a role in protecting the cable from damage. It has the characteristics of good abrasion resistance and corrosion resistance. Because the PE material is more corrosion-resistant, wear-resistant and aging-resistant, and environmentally friendly, the PE corrugated pipe is also commonly used as a rain and sewage branch pipe. The outer wall has an annular corrugated structure, which greatly enhances the ring stiffness of the pipe, thereby enhancing the resistance of the pipe to soil load. In this performance aspect, the HDPE double-wall corrugated pipe has obvious advantages compared with other pipes. However, in the actual use process, when the conventional corrugated pipe is deformed due to excessive pressure, it cannot automatically reset.

[0003] In order to solve the deficiencies of the existing technology, people have carried out long-term explorations and proposed various solutions. For example, a Chinese patent document discloses a compression-resistant PE communication pipe [201810833513.9], in which a sandwich layer is provided on the outer wall of the inner pipe body. The sandwich layer includes a shock-absorbing pad, an air bubble ball layer is arranged in the cavity of the shock-absorbing pad, a composite EPE layer is arranged in the cavity of the air bubble ball layer, a foam layer is arranged in the cavity of the composite EPE layer, a reinforcing layer is arranged in the cavity of the foam layer, shock-absorbing springs are arranged in the cavity of the protection sleeve, rubber balls are filled in the gaps between the reinforcing layer and the inner pipe body, an outer pipe body is arranged on the outer wall of the sandwich layer, an anti-corrosion and wear-resistant layer is arranged on the outer wall of the outer pipe body, and auxiliary wear-resistant convex grains are evenly arranged on the outer wall of the anti-corrosion and wear-resistant layer.

[0004] The above solution solves the problem of the compression strength of the corrugated pipe to a certain extent, but there are still many deficiencies in this solution, such as the problem that it cannot automatically reset after deformation. Summary of the Invention

[0005] The purpose of the utility model is to provide a high-strength and compression-resistant PE corrugated pipe with reasonable design and good elastic reset effect for the above problems.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme: A high-strength and compression-resistant PE corrugated pipe includes a main pipe body in a corrugated pipe structure. A reinforcing shell is fixedly attached to the outside of the main pipe body along the circumference. A secondary pipe body in a corrugated pipe structure is arranged on the outside of the reinforcing shell. A cross-support mechanism is arranged at the upper end of the reinforcing shell. A locking support mechanism is arranged between the two sides and the lower end of the reinforcing shell. A sealing glue is filled between the reinforcing shell and the main pipe body and the secondary pipe body.

[0007] In the above-mentioned high-strength compression-resistant PE corrugated pipe, the reinforcing shell includes a main shell and two sub-shells. The main shell and the sub-shells are respectively in the shape of long strips and are joined together to form a tubular structure. The cross-support mechanism is arranged between the sub-shells, and the locking support mechanism is arranged between the sub-shell and the main shell.

[0008] In the above-mentioned high-strength compression-resistant PE corrugated pipe, the cross-support mechanism includes fork bars arranged at the edges of the sub-shells. There are fork grooves between the fork bars. The surfaces of the fork bars and the fork grooves are arc-shaped. The fork bars and fork grooves at the edges of adjacent sub-shells are engaged with each other.

[0009] In the above-mentioned high-strength compression-resistant PE corrugated pipe, the cross-sectional areas of the fork bars and the fork grooves gradually increase from the inside to the outside of the reinforcing shell.

[0010] In the above-mentioned high-strength compression-resistant PE corrugated pipe, the locking support mechanism includes locking grooves arranged at the edges of the sub-shells, and locking bars engaged with the locking grooves are arranged at the edges of the main shell.

[0011] In the above-mentioned high-strength compression-resistant PE corrugated pipe, the locking bar has a protrusion facing outwards, and a recess for the protrusion to be inserted into is arranged inside the locking groove.

[0012] In the above-mentioned high-strength compression-resistant PE corrugated pipe, the thickness of the main shell is greater than that of the sub-shell, and the cross-sectional area of the main shell is greater than that of the sub-shell.

[0013] In the above-mentioned high-strength compression-resistant PE corrugated pipe, the main pipe body and the sub-pipe body are made of LDPE material, and the reinforcing shell is made of HDPE material.

[0014] In the above-mentioned high-strength compression-resistant PE corrugated pipe, the sealant is made of epoxy resin.

[0015] In the above-mentioned high-strength compression-resistant PE corrugated pipe, bubble cavities are evenly distributed in the sealant.

[0016] Compared with the existing technology, the advantages of the present utility model are as follows: The reinforcing shell supports the main pipe body and the sub-pipe body, and its support mechanism can realize the deformation reset of the reinforcing shell and the overall corrugated pipe under the elastic force of the sealant; The cross-support mechanism and the locking support mechanism can provide a relatively high support strength, and can deform slowly when the pressure is too high, preventing damage to the internal pipeline caused by excessive impact; The sealant is filled between the main pipe body and the sub-pipe body, further improving the sealing effect of the corrugated pipe. Description of the Drawings

[0017] Figure 1 is the structural schematic diagram of the present utility model;

[0018] Figure 2 is the structural sectional view of the present utility model;

[0019] Figure 3 is a partial cross-sectional view of the present utility model;

[0020] Figure 4 is another partial cross-sectional view of the present utility model;

[0021] In the figure, there are main pipe body 1, reinforcing shell 2, main housing 21, sub-housing 22, sub-pipe body 3, cross support mechanism 4, fork bars 41, fork grooves 42, locking support mechanism 5, locking grooves 51, locking bars 52, protrusions 53, depressions 54, sealant 6, and bubble cavity 61. Detailed implementation manners

[0022] The following further elaborates on the present utility model in conjunction with the accompanying drawings and specific implementation manners.

[0023] As Figures 1-4 shown, a high-strength compressive PE corrugated pipe includes a main pipe body 1 in a corrugated pipe structure. A pipeline passes through the inside of the main pipe body 1. A reinforcing shell 2 is fixedly attached to the outside of the main pipe body 1 along the circumferential direction. A sub-pipe body 3 in a corrugated pipe structure is arranged on the outside of the reinforcing shell 2. The reinforcing shell 2 adopts a movable structure. Among them, a cross support mechanism 4 is arranged at the upper end of the reinforcing shell 2 to maintain the structural stability of the top. A locking support mechanism 5 is arranged between the two sides and the lower end of the reinforcing shell 2 to achieve stress dispersion. A sealant 6 is filled between the reinforcing shell 2, the main pipe body 1, and the sub-pipe body 3. When the reinforcing shell 2 deforms, the elasticity of the sealant 6 enables its automatic reset.

[0024] Specifically, different from the conventional reinforced pipe body structure, the reinforcing shell 2 in this application includes a main housing 21 and two sub-housings 22. The main housing 21 and the sub-housings 22 are respectively in long strip sheet shapes and are spliced together to form a tubular structure. The cross support mechanism 4 is arranged between the sub-housings 22, and the locking support mechanism 5 is arranged between the sub-housing 22 and the main housing 21. The compressive strength of the cross support mechanism 4 is greater than that of the locking support mechanism 5. When excessive pressure is received at the top of the corrugated pipe, the locking support mechanism 5 is effectively unlocked, and the relative deformation between the sub-housing 22 and the main housing 21 realizes stress dispersion.

[0025] In-depthly, the cross support mechanism 4 is directly inserted and spliced. Specifically, it includes fork bars 41 arranged at the edges of the sub-housing 22. There are fork grooves 42 left between the fork bars 41. The surfaces of the fork bars 41 and the fork grooves 42 are arc-shaped. The fork bars 41 and the fork grooves 42 at the edges of adjacent sub-housings 22 are engaged with each other. Multiple fork bars 41 and fork grooves 42 maintain the relative position of the sub-housing 22 stable.

[0026] Furthermore, since the bellows as a whole is mainly subjected to downward pressure, the cross-support mechanism 4 needs to be locally reinforced, and the cross-sectional area of ​​the fork bar 41 and the fork groove 42 gradually increases from the inside to the outside of the reinforced shell 2. This structure helps to prevent the relative separation of the sub-shell 22 when under pressure, which affects the stress dispersion of the locking support mechanism 5.

[0027] Furthermore, the locking support mechanism 5 includes a locking groove 51 disposed at the edge of the auxiliary housing 22, and a locking strip 52 engaged with the locking groove 51 is disposed at the edge of the main housing 21. The edges of the locking groove 51 and the locking strip 52 are arc-shaped, respectively, and have a certain amount of movement margin when they are engaged with each other. When the bellows is under pressure, the locking strip 52 twists in the locking groove 51, and the main housing 21 and the auxiliary housing 22 also move relatively.

[0028] In addition, the locking strip 52 has an outward protrusion 53, and the inner side of the locking groove 51 is provided with a recess 54 for the protrusion 53 to be inserted into. The protrusion 53 and the recess 54 mainly maintain the locking effect of the locking support mechanism 5 in a normal state, so that the reinforced shell 2 will not be deformed within a certain pressure range, and the protrusion 53 will be separated from the recess 54 when the specified pressure is exceeded.

[0029] At the same time, the thickness of the main shell 21 is greater than that of the auxiliary shell 22, and the cross-sectional area of ​​the main shell 21 is greater than that of the auxiliary shell 22. When the bellows is installed, the main shell 21 is located at the bottom because the mass of the main shell 21 is greater than that of the auxiliary shell 22, ensuring that the top of the bellows is under pressure.

[0030] It can be seen that the main body 1 and the auxiliary body 3 are made of LDPE material to ensure that they have good elasticity and tensile strength, and the reinforcing shell 2 is made of HDPE material to maintain its structural strength and maintain good structural stability when subjected to greater pressure.

[0031] It is obvious that the sealant 6 is made of epoxy resin, which has an insulating and isolating effect on the one hand, and has good elasticity on the other hand. It is tightly adhered to the cross support mechanism 4 and the locking support mechanism 5, and exerts elastic restoring force after deformation, so that the reinforced shell 2 and the corrugated pipe are restored to the tube state as a whole.

[0032] Preferably, the sealant 6 has bubble cavities 61 evenly distributed in it to improve its impact resistance, while maintaining the flexible structure of the bellows to ensure normal bending of the bellows.

[0033] To sum up, the principle of this embodiment is that the reinforcing shell 2 is arranged between the corrugated main pipe body 1 and the auxiliary pipe body 3, wherein the cross support mechanism 4 and the locking support mechanism 5 enable the reinforcing shell 2 to deform under pressure, thereby achieving stress dispersion, and when the pressure disappears, the sealant 6 applies elastic restoring force to the cross support mechanism 4 and the locking support mechanism 5, so that the bellows automatically resets.

[0034] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art to which the present utility model pertains may make various modifications or supplements to the described specific embodiments or use similar means for substitution, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

[0035] Although terms such as main body 1, reinforcing shell 2, main housing 21, sub-housing 22, sub-tube 3, cross support mechanism 4, fork bar 41, fork groove 42, locking support mechanism 5, locking groove 51, locking bar 52, protrusion 53, depression 54, sealant 6, air bubble chamber 61 are used more frequently herein, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present utility model; interpreting them as any additional limitation is contrary to the spirit of the present utility model.

Claims

1. A high-strength, pressure-resistant PE corrugated pipe, comprising a main pipe body (1) having a corrugated pipe structure, a reinforcement shell (2) being fixedly attached to the outside of the main pipe body (1) along the circumferential direction, and a secondary pipe body (3) having a corrugated pipe structure being arranged on the outside of the reinforcement shell (2), characterized in that: A cross support mechanism (4) is provided at the upper end of the reinforced shell (2), a locking support mechanism (5) is provided between the two sides and the lower end of the reinforced shell (2), and a sealant (6) is filled between the reinforced shell (2) and the main pipe body (1) and the auxiliary pipe body (3).

2. A high-strength compression-resistant PE corrugated pipe according to claim 1, characterized in that: The reinforced shell (2) comprises a main shell (21) and two auxiliary shells (22); the main shell (21) and the auxiliary shells (22) are respectively in the form of long strips and are assembled together to form a tubular structure; the cross support mechanism (4) is arranged between the auxiliary shells (22) and the auxiliary shells (22); and the locking support mechanism (5) is arranged between the auxiliary shells (22) and the main shell (21).

3. A high-strength compression-resistant PE corrugated pipe according to claim 2, characterized in that: The cross support mechanism (4) comprises fork bars (41) arranged at the edge of the auxiliary housing (22), fork grooves (42) are left between the fork bars (41), the surfaces of the fork bars (41) and the fork grooves (42) are arc-shaped, and the fork bars (41) and fork grooves (42) at the edges of adjacent auxiliary housings (22) are engaged with each other.

4. A high-strength compression-resistant PE corrugated pipe according to claim 3, characterized in that: The cross-sectional areas of the fork strips (41) and the fork grooves (42) gradually increase from the inside of the reinforcement shell (2) toward the outside.

5. The high-strength compression-resistant PE corrugated pipe according to claim 2, characterized in that: The locking support mechanism (5) comprises a locking groove (51) arranged at the edge of the auxiliary housing (22), and a locking strip (52) engaged with the locking groove (51) is arranged at the edge of the main housing (21).

6. A high-strength compression-resistant PE corrugated pipe according to claim 5, characterized in that: The locking strip (52) has an outwardly facing protrusion (53), and the inner side of the locking groove (51) is provided with a recess (54) for the protrusion (53) to be inserted into.

7. A high-strength compression-resistant PE corrugated pipe according to claim 2, characterized in that: The thickness of the main shell (21) is greater than the thickness of the auxiliary shell (22), and the cross-sectional area of ​​the main shell (21) is greater than the cross-sectional area of ​​the auxiliary shell (22).

8. The high-strength compression-resistant PE corrugated pipe according to claim 1, characterized in that: The main pipe body (1) and the auxiliary pipe body (3) are made of LDPE material, and the reinforcement shell (2) is made of HDPE material.

9. The high-strength compression-resistant PE corrugated pipe according to claim 1, characterized in that: The sealant (6) is epoxy resin.

10. A high-strength compression-resistant PE corrugated pipe according to claim 9, characterized in that: The sealant (6) has evenly distributed bubble cavities (61).

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