Bending fatigue-resistant control line

Abstract

This utility model relates to the field of pipeline technology and discloses a bending fatigue-resistant pipeline, including a pipeline structure. The fatigue-resistant layer includes an aluminum alloy pipe A and an aluminum alloy pipe B disposed on the outside of the aluminum alloy pipe A. A copper support bar is installed between the aluminum alloy pipe A and the aluminum alloy pipe B. An inner support rod and an adhesive are installed between the aluminum alloy pipe A and the aluminum alloy pipe B. When the pipeline structure bends, a cavity is provided between the aluminum alloy pipe A and the aluminum alloy pipe B, providing space for the deformation of the bent composite material pipe, stainless steel pipe, aluminum alloy pipe A and aluminum alloy pipe B. The adhesive is still soft after curing, which facilitates the position change of the two ends of the inner support rod. Since a copper support bar is installed between the aluminum alloy pipe A and the aluminum alloy pipe B, it supports the aluminum alloy pipe A and the aluminum alloy pipe B, preventing the aluminum alloy pipe A or the aluminum alloy pipe B from collapsing when the pipeline structure bends, thus affecting the fatigue resistance of the pipeline structure.

Description

Technical Field

[0001] This utility model relates to the field of pipeline technology, specifically to a bending fatigue-resistant control pipeline. Background Technology

[0002] Pipelines typically refer to pipelines (e.g., conduits, mechanical components, or electronic circuits) designed and optimized for specific applications to address fatigue issues caused by bending. These pipelines place particular emphasis on extending their service life and ensuring efficient and stable operation under repeated bending or mechanical stress. When bending pipelines, repeated bending causes alternating stresses under external forces; prolonged exposure to these alternating stresses can lead to fatigue cracks. Therefore, fatigue-resistant design is necessary to enable pipelines to withstand significant cyclic stresses during prolonged periods of repeated bending without rupture.

[0003] For example, a fracture-resistant and corrosion-resistant electrical steam pipeline with publication number CN216813215U includes a steam pipeline body. A sealing ring 1 and a sealing ring 2 are slidably provided at both ends of the steam pipeline body. A sealing ring 1 is fixedly provided on the side of the sealing ring 1 away from the sealing ring 2. A sealing ring 2 matching the sealing ring 1 is fixedly provided on the side of the sealing ring 2 away from the sealing ring 1. Both the sealing ring 1 and the sealing ring 2 have threads on their outer walls. A fixing ring is rotatably fitted onto the threaded outer wall of the sealing ring 1. The steam pipeline body includes a base pipe. A waterproof layer is fixedly provided around the outer wall of the base pipe. A reinforcing layer is fixedly provided around the outer wall of the waterproof layer. An anti-corrosion layer is fixedly provided around the outer wall of the reinforcing layer. The beneficial effects are: it can effectively improve the sealing performance of the electrical steam pipeline during use, and at the same time, it effectively improves the corrosion resistance and fracture prevention effect of the electrical steam pipeline.

[0004] The aforementioned patent proposes that by setting a reinforcing layer and placing an asbestos layer within the reinforcing layer, the fire resistance of the gas pipeline body can be improved. At the same time, the cavity within the reinforcing layer can effectively reduce the impact of thermal expansion and contraction on the reinforcing layer, thereby effectively improving the strength of the gas pipeline body and effectively preventing the gas pipeline body from breaking. However, in actual use, the presence of the cavity may lead to a decrease in the stability of the reinforcing layer, especially when subjected to pressure or external forces, which may cause structural deformation or damage. Utility Model Content

[0005] The purpose of this invention is to provide a bending fatigue-resistant control pipeline to solve the problem mentioned in the background art that the presence of cavities may lead to a decrease in the stability of the reinforcing layer.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a bending fatigue control pipeline, comprising a pipeline structure, wherein the pipeline structure comprises a composite material pipe and a stainless steel pipe installed on the outer surface of the composite material pipe, the outer surface of the stainless steel pipe is provided with a fatigue-resistant layer, and the outer surface of the fatigue-resistant layer is provided with an outer protective component.

[0007] The fatigue-resistant layer includes an aluminum alloy tube A and an aluminum alloy B disposed on the outside of the aluminum alloy tube A, with a copper support strip installed between the aluminum alloy tube A and the aluminum alloy B.

[0008] Preferably, the aluminum alloy tube A and aluminum alloy tube B are fitted with internal support rods and adhesive.

[0009] Preferably, the adhesive is disposed on the surfaces of aluminum alloy tube A and aluminum alloy tube B that are close to each other, and the inner support rod is installed obliquely between the adhesive.

[0010] Preferably, the outer protective component includes a polyethylene pipe and a polymer toughening agent disposed inside the polyethylene pipe.

[0011] Preferably, the outer surface of the polyethylene pipe is provided with an anti-ultraviolet coating.

[0012] Preferably, the outer surface of the outer protective component is provided with an anti-slip coating.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model discloses a bending fatigue control pipeline. When the pipeline structure bends, a cavity is set between aluminum alloy pipe A and aluminum alloy pipe B, providing space for the deformation of the bent composite material pipe, stainless steel pipe, aluminum alloy pipe A and aluminum alloy pipe B. Utilizing the characteristic that the adhesive is still soft after curing, it is easy to change the position of the two ends of the internal support rod. Since copper support bars are installed between aluminum alloy pipe A and aluminum alloy pipe B, they are supported between aluminum alloy pipe A and aluminum alloy pipe B, preventing the aluminum alloy pipe A or aluminum alloy pipe B from collapsing when the pipeline structure bends, thus affecting the fatigue resistance of the pipeline structure.

[0015] 2. The present invention discloses a bending fatigue control pipeline, wherein the polyethylene pipe is provided with bending resistance, which facilitates the adjustment of the pipeline structure according to the usage environment, and the provided anti-ultraviolet coating prevents surface cracking and peeling caused by ultraviolet rays. The anti-ultraviolet coating can significantly improve the overall durability of the polyethylene pipe, enabling it to be used stably in various environments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the pipeline structure of this utility model;

[0018] Figure 3 For the present utility model Figure 2 Enlarged view of point A in the middle;

[0019] Figure 4 This is a schematic diagram of the outer protective component structure of this utility model.

[0020] In the diagram: 1. Pipeline structure; 11. Composite material pipe; 12. Stainless steel pipe; 13. Fatigue-resistant layer; 131. Aluminum alloy pipe A; 132. Aluminum alloy B; 133. Internal strut; 134. Adhesive; 135. Copper support bar; 14. External protective component; 141. Polyethylene pipe; 142. Polymer toughening agent; 143. UV-resistant coating; 15. Anti-slip coating. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1: Please refer to Figures 1-3 A bending fatigue control pipeline includes a pipeline structure 1, which includes a composite material pipe 11 and a stainless steel pipe 12 installed on the outer surface of the composite material pipe 11. The outer surface of the stainless steel pipe 12 is provided with a fatigue-resistant layer 13, and the outer surface of the fatigue-resistant layer 13 is provided with an outer protective member 14. The composite material pipe 11 itself is made of glass fiber reinforced plastic, which has a light weight and good bending resistance.

[0023] The fatigue-resistant layer 13 includes an aluminum alloy tube A131 and an aluminum alloy B132 disposed on the outside of the aluminum alloy tube A131. A copper support strip 135 is installed between the aluminum alloy tube A131 and the aluminum alloy B132. The copper support strip 135 has strong bending resistance and good ductility, and can be bent without easily breaking.

[0024] Aluminum alloy tubes A131 and B132 are fitted with inner support rods 133 and adhesive 134. The inner support rods 133 are made of ceramic, which has very small shape and volume changes when the temperature changes. The adhesive 134 is made of butyl rubber, which has good wear resistance and oxidation resistance, and excellent sealing performance.

[0025] Adhesive 134 is applied to the surfaces of aluminum alloy tube A131 and aluminum alloy tube B132 that are close to each other. Inner support rod 133 is installed at an angle between adhesive 134. The angled inner support rod 133 supports the aluminum alloy tube A131 and aluminum alloy tube B132.

[0026] In this embodiment: When the pipeline structure 1 bends, a cavity is provided between the aluminum alloy pipe A131 and the aluminum alloy pipe B132 to provide space for the deformation of the bent composite material pipe 11, stainless steel pipe 12, aluminum alloy pipe A131, and aluminum alloy pipe B132. The angle of the adhesive 134 installed between the aluminum alloy pipe A131 and the aluminum alloy pipe B132 changes. The adhesive 134 deforms due to the changes at both ends of the inner support rod 133, and the adhesive 134 fixes the inner support rod 133 to the aluminum alloy pipe A131 and the inner support rod B132. While the aluminum alloy B132 is in contact, the adhesive 134 is still soft after curing, which facilitates the positional changes of the two ends of the inner support rod 133. Since a copper support bar 135 is installed between the aluminum alloy tube A131 and the aluminum alloy B132, it supports the aluminum alloy tube A131 and the aluminum alloy B132, preventing the aluminum alloy tube A131 or aluminum alloy B132 from collapsing when the pipeline structure 1 bends, thus affecting the fatigue resistance of the pipeline structure 1. The inner support rod 133 and the copper support bar 135 improve the toughness of the pipeline structure 1.

[0027] Example 2: This example is an improvement upon Example 1. For details, please refer to [link / reference]. Figure 2 and Figure 4 The outer protective component 14 includes a polyethylene pipe 141 and a polymer toughening agent 142 disposed inside the polyethylene pipe 141. The polyethylene pipe 141 is lightweight and has good bending resistance, can withstand a certain degree of external bending force, and has good durability. The polymer toughening agent 142 is made of polyurethane rubber. Rubber toughening agents form bent rubber particles or molecular chains in the polymer, which act as a "dispersed phase", effectively absorbing impact energy and dispersing the impact force to the surrounding material, reducing the generation of cracks.

[0028] The outer surface of the polyethylene pipe 141 is provided with an anti-ultraviolet coating 143. The anti-ultraviolet coating 143 is made of acrylic acid, which shields the radiation of ultraviolet rays, prevents ultraviolet rays from penetrating into the interior of the polyethylene pipe 141, and slows down the photodegradation process.

[0029] The outer surface of the outer protective component 14 is provided with an anti-slip coating 15. The anti-slip coating 15 is made of polyurethane, which has high wear resistance and corrosion resistance.

[0030] In this embodiment: the polyethylene pipe 141 is resistant to bending, which makes it easy for the pipeline structure 1 to adjust its state according to the usage environment. The UV-resistant coating 143 prevents surface cracking and peeling caused by ultraviolet rays. The UV-resistant coating 143 can significantly improve the overall durability of the polyethylene pipe 141, so that it can be used stably in various environments. The anti-slip coating 15 on the outer surface of the outer protective component 14 increases the friction of the pipeline structure 1 and prevents the pipeline structure 1 from moving randomly.

[0031] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A bending fatigue-resistant control pipeline, comprising a pipeline structure (1), characterized in that: The pipeline structure (1) includes a composite material pipe (11) and a stainless steel pipe (12) installed on the outer surface of the composite material pipe (11). The outer surface of the stainless steel pipe (12) is provided with an anti-fatigue layer (13), and the outer surface of the anti-fatigue layer (13) is provided with an outer protective component (14). The fatigue-resistant layer (13) includes an aluminum alloy tube A (131) and an aluminum alloy B (132) disposed on the outside of the aluminum alloy tube A (131), with a copper support strip (135) installed between the aluminum alloy tube A (131) and the aluminum alloy B (132).

2. The bending fatigue resistance control pipeline according to claim 1, characterized in that: The aluminum alloy tube A (131) and aluminum alloy B (132) are fitted with internal support rods (133) and adhesive (134).

3. A bending fatigue-resistant control pipeline according to claim 2, characterized in that: The adhesive (134) is placed on the surfaces of aluminum alloy tube A (131) and aluminum alloy tube B (132) that are close to each other, and the inner support rod (133) is installed at an angle between the adhesive (134).

4. A bending fatigue-resistant control pipeline according to claim 1, characterized in that: The outer protective component (14) includes a polyethylene pipe (141) and a polymer toughening agent (142) disposed inside the polyethylene pipe (141).

5. A bending fatigue-resistant control pipeline according to claim 4, characterized in that: The outer surface of the polyethylene pipe (141) is provided with an anti-ultraviolet coating (143).

6. A bending fatigue-resistant control pipeline according to claim 4, characterized in that: The outer surface of the outer protective component (14) is provided with an anti-slip coating (15).

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