Corrugated pipe with fiber tensioning structure

Abstract

The corrugated pipe with the tensioning fiber structure comprises a pipe wall profile, buckling structures arranged on the two sides of the pipe wall profile and a corrugated structure arranged on the outer side of the pipe wall profile, the pipe wall profile spirally extends in the section direction and is sequentially buckled through the buckling structures to form a pipe body, and the corrugated structure comprises a wave trough and wave crests located on the two sides of the wave trough. Embedding grooves are formed in the two groups of wave crests, reinforcing fibers are embedded in the embedding grooves, when the pipe body is subjected to bending stress, if the two wave crests draw close to each other, extrusion is preferentially formed in the embedding grooves, and the reinforcing fibers located in the embedding grooves offset pressure through the rib grooves and the pull grooves; if the two wave crests are mutually opened, expansionary force is preferentially formed in the embedding groove, and at the moment, the reinforcing fibers tension the two sides of the wave crests through the pull lugs to offset the expansionary force, so that the bending resistance of the pipe body is improved, and the overall strength of the pipe wall is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipes, in particular to a corrugated pipe with a tensioned fiber structure. Background Art

[0002] Bellows are corrugated pipes with a unique structural design that offers exceptional compressive and tensile strength. Due to their excellent corrosion resistance, lightweight design, ease of installation, and long service life, they are widely used in a variety of fields, particularly in construction, chemical engineering, petroleum, and healthcare. Traditional bellows are mostly made of metal or plastic, with the corrugations formed by spiral winding. However, their ring stiffness and pressure-bearing capacity are often limited by the inherent properties of the material.

[0003] For example, Chinese utility model patent application number 202420591236.6 discloses a reinforced double-walled corrugated pipe comprising a corrugated pipe body with a flared opening at one end. The corrugated pipe body comprises an inner pipe wall and a corrugated outer wall. The corrugated outer wall comprises a large corrugated portion and a small corrugated portion disposed between the two large corrugated portions. The large corrugated portion has a double-peak structure. The outer wall of the large corrugated portion is provided with an external reinforcing rib in the trough recessed portion between the two crests. The interior of the large corrugated portion is provided with an internal reinforcing rib. The outer surface of the inner pipe wall is provided with a positioning groove corresponding to each small corrugated portion, and each positioning groove is provided with a reinforcing steel wire. This patent significantly enhances the strength of the corrugated pipe through multiple reinforcement structures, thereby enhancing the overall compressive performance of the corrugated pipe.

[0004] However, in the above structure, the small corrugated portion is arranged between two large corrugated portions, and there is a large distance between the two adjacent large corrugated portions and the wave crest is high. When the corrugated pipe is subjected to bending stress, since there is no additional support between the two groups of large corrugated portions, they will be relatively open or relatively close, resulting in poor bending resistance of the pipe, easy to bend and deform, and even cause damage to the pipe wall when bent to a certain extent. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a corrugated pipe with a tensioned fiber structure.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A corrugated tube with a tensioned fiber structure includes a tube wall profile, buckle structures arranged on both sides of the tube wall profile, and a corrugated structure arranged on the outside of the tube wall profile. The tube wall profile extends spirally along the cross-sectional direction and is sequentially buckled together through the buckle structures to form a tube body. The corrugated structure includes a trough and crests located on both sides of the trough. Two groups of crests are provided with embedding grooves. Reinforcing fibers for improving the bending resistance of the tube body are embedded in the embedding grooves. Support slopes for improving the supporting performance are provided at the connections between the two sides of the trough and the crests. The deepest part of the embedding groove is lower than the bottom surface of the trough.

[0008] Furthermore, the reinforcing fibers are glass fibers, and the reinforcing fibers are tightly combined with the embedding grooves.

[0009] In the present invention, a rib groove extends toward the inner side of the tube wall at the bottom of the embedded groove, the bottom surface of the rib groove is lower than the bottom surface of the trough, and a limiting opening protruding toward the inner side of the groove is provided at the groove opening of the rib groove, and the limiting opening makes the groove opening width of the rib groove smaller than the groove bottom width of the rib groove.

[0010] Furthermore, downwardly extending drawing grooves are provided in the embedding groove and on both sides of the rib groove, and pulling ears for tightening the reinforcing fibers are formed between the two drawing grooves and the rib groove.

[0011] Furthermore, the groove is a dovetail groove that is narrow at the top and wide at the bottom, and both sides of the reinforcing fiber are embedded in the groove to form a limit.

[0012] In the present invention, the top surface of the reinforcing fiber is flush with the outer side surface of the tube wall profile, the top of the wave crest is flush with the outer side surface of the tube wall profile, and the wave trough forms a groove on the tube wall profile.

[0013] In the present invention, the tube wall profile includes an outer tube wall and an inner tube wall, the corrugated structure is located on the outside of the outer tube wall, the inward concave depth of the trough is 1 / 3 to 1 / 2 of the thickness of the outer tube wall, and the downward extending depth of the rib groove is 2 / 3 to 3 / 4 of the thickness of the outer tube wall.

[0014] The utility model has the following advantages and beneficial effects:

[0015] An embedding groove is set at the wave crest, and reinforcing fibers are embedded in the embedding groove. When the tube body is subjected to bending stress, if the two wave crests move closer to each other, extrusion will be formed first in the embedding groove, and the reinforcing fibers located in the embedding groove will offset the pressure through the rib groove and the pull groove; if the two wave crests open to each other, expansion force will be formed first in the embedding groove. At this time, the reinforcing fibers will tighten the two sides of the wave crest through the pull ears to offset the expansion force, thereby improving the bending resistance of the tube body and the overall strength of the tube wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 Schematic diagram of the connection between the tube wall profile and the reinforcing fiber in this embodiment;

[0018] Figure 2 Schematic diagram of the structure of the tube wall profile in this embodiment;

[0019] Figure 3 Schematic diagram of the structure of the bellows body in this embodiment. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention, but the present invention is not limited to the following embodiments.

[0021] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0022] In addition, if there are descriptions involving "first" or "second" in the embodiments of the present invention, the descriptions of "first" or "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0023] like Figures 1 to 3As shown, this embodiment discloses a corrugated tube with a tensioned fiber structure, comprising a tube wall profile 1, a buckle structure 11 arranged on both sides of the tube wall profile 1, and a corrugated structure 12 arranged on the outside of the tube wall profile 1, wherein the tube wall profile 1 spirally extends along the cross-sectional direction and is sequentially buckled by the buckle structure 11 to form a tube body, the corrugated structure 12 comprises a trough 13 and a crest 14 located on both sides of the trough 13, two groups of the crests 14 are provided with an embedding groove 121, and the embedding groove 121 is embedded with a reinforcing fiber 2 for improving the bending resistance of the tube body, the trough 13 Support slopes 131 for improving the supporting performance are provided at the connections between the two sides and the wave crests 14. The deepest part of the embedding groove 121 is lower than the bottom surface of the trough 13. Therefore, when the tube body is subjected to bending stress, the reinforcing fibers 2 in the embedding groove 121 will be preferentially squeezed or pulled. In this way, the bending resistance of the tube body can be improved as a whole only by increasing the strength of the reinforcing fibers 2. Specifically, the reinforcing fibers 2 are preferably glass fibers. The molten glass fibers are poured into the embedding groove 121 to form the reinforcing fibers 2, so that the reinforcing fibers 2 are tightly combined with the embedding groove 121.

[0024] In this embodiment, a rib groove 122 is extended toward the inner side of the tube wall at the bottom of the embedding groove 121, and the bottom surface of the rib groove 122 is lower than the bottom surface of the trough 13. In order to prevent the reinforcing fiber 2 from detaching, a limiting opening 123 protruding toward the inner side of the groove is provided at the groove opening of the rib groove 122. The limiting opening 123 makes the groove opening width of the rib groove 122 narrower than the groove bottom width of the rib groove 122. When the reinforcing fiber 2 is embedded in the rib groove 122, the connection strength can be improved to avoid detachment, and the reinforcing fiber 2 extending into the rib groove 122 can increase the ring stiffness of the tube body, thereby improving the overall performance of the tube body.

[0025] Furthermore, in order to improve the bending resistance of the reinforcing fiber 2 to the tube body, a downwardly extending drawing groove 124 is provided in the embedding groove 121 and on both sides of the rib groove 122, and a pulling ear 125 for tightening the reinforcing fiber 2 is formed between the two drawing grooves 124 and the rib groove 122. Specifically, in order to prevent the two sides of the reinforcing fiber 2 from warping, the drawing groove 124 is set as a dovetail groove that is narrow at the top and wide at the bottom, and the two sides of the reinforcing fiber 2 are embedded in the drawing groove 124 to form a limit. In addition, when the tube body is subjected to bending stress, if the two wave peaks 14 approach each other, they will preferentially be squeezed in the embedding groove 121, and the reinforcing fiber 2 located in the embedding groove 121 will offset the pressure through the rib groove 122 and the drawing groove 124; if the two wave peaks 14 open to each other, an expansion force will preferentially be formed in the embedding groove 121, and at this time the reinforcing fiber 2 will tighten the two sides of the wave peak 14 through the pulling ear 125 to offset the expansion force, thereby improving the bending resistance of the tube body.

[0026] In this embodiment, after the reinforcing fiber 2 is embedded in the embedding groove 121, the top surface of the reinforcing fiber 2 is flush with the outer side surface of the tube wall profile 1. Similarly, the top of the crest 14 is flush with the outer side surface of the tube wall profile 1, and the trough 13 forms a groove on the tube wall profile 1. The trough 13 forms a corrugated structure on the outer surface of the tube body. This structure not only saves raw materials, but also gives the tube body good flexibility and stretchability through the corrugated structure, making it not easy to break or deform.

[0027] In this embodiment, the tube wall profile 1 includes an outer tube wall and an inner tube wall, and the corrugated structure 12 is located on the outside of the outer tube wall, wherein the inward concave depth of the trough 13 is 1 / 3 to 1 / 2 of the thickness of the outer tube wall, preferably 1 / 2, and the downward extending depth of the rib groove 122 is 2 / 3 to 3 / 4 of the thickness of the outer tube wall, preferably 2 / 3. By setting the outer tube wall and the inner tube wall, the structural strength of the tube wall profile 1 is improved, and the structure is more stable after spirally winding to form a tube body.

[0028] The above contents described in this specification are merely examples of the present invention. Those skilled in the art in the technical field to which the present invention belongs may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the contents of the present invention specification or exceed the scope defined by the claims, they shall fall within the scope of protection of the present invention.

Claims

1. A corrugated tube with a tensioned fiber structure, comprising a tube wall profile (1), buckle structures (11) arranged on both sides of the tube wall profile (1), and a corrugated structure (12) arranged outside the tube wall profile (1), wherein the tube wall profile (1) extends spirally along the cross-sectional direction and is sequentially buckled by the buckle structures (11) to form a tube body, characterized in that: The corrugated structure (12) comprises a trough (13) and crests (14) located on both sides of the trough (13); two groups of crests (14) are provided with embedded grooves (121); reinforcing fibers (2) for improving the bending resistance of the tube body are embedded in the embedded grooves (121); support slopes (131) for improving the supporting performance are provided at the connection between the two sides of the trough (13) and the crests (14); and the deepest part of the embedded grooves (121) is lower than the bottom surface of the trough (13).

2. The corrugated pipe with a tensioned fiber structure according to claim 1, characterized in that: The reinforcing fibers (2) are glass fibers, and the reinforcing fibers (2) are tightly combined with the embedding grooves (121).

3. The corrugated pipe with a tensioned fiber structure according to claim 1, characterized in that: A rib groove (122) extends from the bottom of the embedded groove (121) toward the inside of the tube wall. The bottom surface of the rib groove (122) is lower than the bottom surface of the trough (13). A position-limiting opening (123) protruding toward the inside of the groove is provided at the groove opening of the rib groove (122). The position-limiting opening (123) makes the groove opening width of the rib groove (122) smaller than the groove bottom width of the rib groove (122).

4. The corrugated pipe with a tensioned fiber structure according to claim 3, characterized in that: A downwardly extending pull groove (124) is provided in the embedding groove (121) and on both sides of the rib groove (122), and a pull ear (125) for tightening the reinforcing fiber (2) is formed between the two pull grooves (124) and the rib groove (122).

5. The corrugated pipe with a tensioned fiber structure according to claim 4, characterized in that: The drawing groove (124) is a dovetail groove that is narrow at the top and wide at the bottom, and both sides of the reinforcing fiber (2) are embedded in the drawing groove (124) to form a limit.

6. The corrugated pipe with a tensioned fiber structure according to claim 1, characterized in that: The top surface of the reinforcing fiber (2) is flush with the outer side surface of the tube wall profile (1), the top of the wave crest (14) is flush with the outer side surface of the tube wall profile (1), and the wave trough (13) forms a groove on the tube wall profile (1).

7. The corrugated pipe with a tensioned fiber structure according to claim 3, characterized in that: The tube wall profile (1) comprises an outer tube wall and an inner tube wall, the corrugated structure (12) is located outside the outer tube wall, the indentation depth of the trough (13) is 1 / 3 to 1 / 2 of the thickness of the outer tube wall, and the downward extension depth of the rib groove (122) is 2 / 3 to 3 / 4 of the thickness of the outer tube wall.

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