Fiber composite liquid conveying pipeline

Abstract

The utility model discloses a fiber composite liquid conveying pipeline which comprises a lining layer, an inner structure layer, a hollow layer, an outer structure layer, a spiral rib layer, a metal net layer and an outer protection layer from inside to outside, the lining layer, the inner structure layer, the hollow layer, the outer structure layer and the spiral rib layer are fixedly bonded into a whole, the spiral rib layer is sleeved with the metal net layer, and the outer protection layer is arranged outside the metal net layer. A gap between the metal net layer and the spiral rib layer is filled with filler; the outer protection layer is arranged outside the metal net layer in a sleeving mode and fixedly bonded with the metal net layer. The pipeline is provided with a hollow layer and a spiral rib structure, so that larger radial bearing pressure and higher impact resistance are achieved. Meanwhile, by integrating the water leakage monitoring function, the pipeline can be monitored in real time, the reliability and the intelligent level of the infusion system are improved, and therefore the diversified requirements of modern engineering for the infusion pipeline are better met.

Description

Technical Field

[0001] The present application relates to a fiber composite pipe, in particular to a fiber composite infusion pipe. Background Art

[0002] Fiber-composite pipes are increasingly used in modern engineering, particularly for specific fluid delivery requirements and complex environments. With their excellent corrosion resistance, lightweight construction, and high plasticity, fiber-composite pipes are gradually replacing traditional metal pipes and becoming a vital piece of infrastructure. However, existing fiber-composite pipes still have limitations in production processes, structural design, and multifunctional integration.

[0003] First, the manufacturing process for existing fiber-composite infusion pipes is relatively complex, especially for large-diameter pipes, whose maximum diameter is often limited due to material and process limitations. Furthermore, the existing process struggles to achieve continuous production, resulting in low production efficiency and high manufacturing costs. This significantly limits the application and promotion of fiber-composite infusion pipes, especially in projects requiring large-scale installations, where cost becomes a major bottleneck for further development. Improving production efficiency requires innovation in production processes, employing more advanced automated equipment and continuous production technologies, to reduce production costs and enhance market competitiveness.

[0004] Secondly, the structural design of existing fiber composite infusion pipelines is relatively simple, and most of them adopt a single pipe wall structure. Although this design can meet the basic infusion function, its pressure bearing capacity is limited and it is easy to deform or break the structure under external pressure or impact. Especially in some high-pressure or high-load infusion scenarios, the impact resistance and crack resistance of existing pipelines are insufficient. Increasing the wall thickness is a direct way to improve the compressive strength, but this will significantly increase the material cost. At the same time, the increased weight will cause inconvenience in transportation and installation, especially in large facilities or difficult-to-reach locations. In addition, thicker pipe walls also mean longer curing time, further increasing the production cycle and cost. Therefore, it is necessary to optimize the structural design of the pipeline, such as introducing a hollow layer and spiral rib structure inside the pipeline to improve its pressure bearing and impact resistance, while reducing the amount of material used and reducing the overall weight, thereby improving the convenience and efficiency of construction.

[0005] Existing fiber composite infusion pipelines also have significant limitations in terms of multifunctional integration. Due to the single nature of the pipeline structure, it is difficult to flexibly integrate other functional modules, such as water leakage monitoring, the passage of communication optical cables or electrical cables, or the implementation of other intelligent monitoring functions, which limits its potential in intelligent management and multifunctional applications. Modern infusion systems have placed higher requirements on the multifunctional integration of pipelines, but existing fiber composite pipelines are difficult to meet these requirements. In order to meet these requirements, future fiber composite infusion pipelines should have a modular design concept that allows them to be easily integrated with other systems. For example, sensors can be integrated into the pipeline wall to achieve real-time monitoring of the internal and external environment of the pipeline, thereby improving the intelligence level of the infusion system. These integrated functions can not only improve the reliability of the system, but also facilitate subsequent maintenance and management.

[0006] In addition, the performance of existing fiber composite infusion pipelines in extreme environments needs to be improved. In high temperature, high humidity or highly corrosive environments, the mechanical properties and service life of the pipeline are often affected, and existing structures and materials are difficult to provide sufficient stability and reliability. Especially in long-term operation, the aging resistance of existing pipelines is relatively limited, making it difficult to adapt to some infusion systems that require long-term stable operation. Therefore, it is necessary to develop more high-temperature and corrosion-resistant composite materials to enhance the stability and durability of the pipeline in extreme environments. At the same time, special coatings can be added to the outer wall of the pipeline to enhance its adaptability to the external environment, improve its aging resistance, and extend its service life.

[0007] Based on the above problems, it is particularly important to develop an improved fiber composite infusion pipeline. Utility Model Content

[0008] The present application aims to overcome at least one shortcoming of the prior art by providing a fiber composite infusion pipeline with a hollow core and spiral rib structure to achieve greater radial bearing capacity and improved impact resistance. Furthermore, by integrating a leak detection function, real-time monitoring of the pipeline is possible, improving the reliability and intelligence of the infusion system and thereby better meeting the diverse demands placed on infusion pipelines in modern engineering projects.

[0009] To achieve the above-mentioned purpose, the present application discloses a fiber composite infusion pipe, which comprises, from the inside to the outside, an inner lining layer, an inner structural layer, a hollow layer, an outer structural layer, a spiral rib layer, a metal mesh layer, and an outer protective layer. The inner lining layer, the inner structural layer, the hollow layer, the outer structural layer, and the spiral rib layer are bonded together as a whole. The metal mesh layer is sleeved outside the spiral rib layer, and the gap between the metal mesh layer and the spiral rib layer is filled with filler. The outer protective layer is sleeved outside the metal mesh layer and bonded to the metal mesh layer. The inner lining layer is composed of glass fiber surface felt, glass fiber knitted felt, and The mesh cloth is formed by alternating stacking in sequence, with a resin layer sandwiched between each layer to bond the layers together; the inner structural layer and the outer structural layer are made of glass fiber yarn or basalt fiber yarn mixed with resin wound back and forth; the hollow layer is composed of a number of hollow pipe fittings with a D-shaped cross-section arranged coaxially with the pipeline and arranged around the outer surface of the structural layer; the hollow layer is provided with at least one leakage detection sensor; the spiral rib layer is composed of ribs spirally wound and bonded to the outer surface of the outer structural layer, and the ribs are composed of a number of long glass fiber filaments mixed with resin that are radially tightly gathered.

[0010] In some embodiments, the lining layer is 1.2-1.5 mm thick.

[0011] In some embodiments, the thickness of the inner structural layer is 1% of the pipe diameter.

[0012] In some embodiments, the bottom transverse surface of each tube of the hollow layer is adhered to the outer surface of the inner structural layer.

[0013] In some embodiments, the tubes of the hollow layer are alternately bonded to the outer surface of the structural layer.

[0014] In some embodiments, the pipe in the hollow layer is a pipe with a ring stiffness of 10,000.

[0015] In some embodiments, the outer surface of the tube in the hollow layer is smooth.

[0016] In some embodiments, the outer structural layer is 5-10 mm thick.

[0017] In some embodiments, the resin is an epoxy resin or an orthophthalic unsaturated resin.

[0018] In some embodiments, the hollow layer is bonded to the inner surface of the outer structural layer.

[0019] In some embodiments, the spiral pitch of the ribs of the spiral rib layer is 50-100 mm.

[0020] In some embodiments, the ribs in the spiral rib layer are cylindrical.

[0021] In some embodiments, the filler is foamed polyethylene.

[0022] In some embodiments, the outer protective layer is a glass fiber reinforced plastic tube with a thickness of 3-5 mm.

[0023] Compared with the prior art, this application has at least one of the following beneficial effects:

[0024] 1. Enhanced pressure bearing and impact resistance: Through the hollow layer and spiral rib structure design, the pipeline has greater radial bearing pressure and higher impact resistance, improving its adaptability in complex environments.

[0025] 2. Real-time monitoring and improved intelligence: The integrated water leakage monitoring function enables real-time monitoring of pipelines, improves the intelligence level of the infusion system, and enhances its reliability.

[0026] 3. Multi-layer structure improves durability and adaptability: The multi-layer composite structure, especially the design of the inner and outer structural layers and the outer protective layer, enhances the high temperature resistance and corrosion resistance of the pipeline, while extending its service life.

[0027] 4. Lightweight and convenient construction: The hollow layer and spiral rib design reduce the amount of material used while ensuring structural strength, reduce the weight of the pipeline, and improve the convenience and efficiency of transportation and installation.

[0028] The above-listed beneficial effects are not exhaustive and other potential beneficial effects and detailed technical implementations will be further disclosed in the examples or other description sections of this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] After reading the following detailed description in conjunction with the accompanying drawings, you will better understand the various aspects of the present disclosure. The positions, sizes, and ranges of various structures shown in the drawings and the like sometimes do not represent the actual positions, sizes, and ranges. In the drawings:

[0030] Figure 1 1 is a schematic structural diagram of an embodiment disclosed in the present application, in which a portion is cut away to facilitate the distinction and labeling of each layer.

[0031] Figure 2 This is a schematic structural diagram of an embodiment disclosed in the present application, in which the metal mesh layer and filler are partially cut away and omitted.

[0032] Figure 3 It is a schematic diagram of the cross-sectional structure of an embodiment disclosed in this application.

[0033] Figure 4 It is a schematic structural diagram of a spiral rib layer in an embodiment disclosed in this application.

[0034] Figure 5 It is a structural schematic diagram of a pipe fitting in an embodiment disclosed in this application. DETAILED DESCRIPTION

[0035] The present disclosure will be described below with reference to the accompanying drawings, which illustrate several embodiments of the present disclosure. However, it should be understood that the present disclosure can be presented in many different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the present disclosure more complete and fully illustrate the scope of protection of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide many additional embodiments.

[0036] It should be understood that like reference numerals refer to like elements throughout the drawings. In the drawings, the dimensions of some features may be distorted for clarity.

[0037] It should be understood that the terms used in the specification are only used to describe specific embodiments and are not intended to limit the present disclosure. All terms (including technical and scientific terms) used in the specification have the meanings commonly understood by those skilled in the art unless otherwise defined. For the sake of brevity and / or clarity, the techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered part of the authorization specification.

[0038] As used in this specification, the singular forms "a," "an," "said," and "the" include the plural forms unless otherwise expressly stated. The terms "include," "comprise," and "contain" as used in this specification indicate the presence of the claimed features, but do not exclude the presence of one or more additional features. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items. Example

[0039] like Figure 1-5 As shown, this embodiment discloses the specific structure and implementation of a fiber composite infusion pipe. From the inside out, the fiber composite infusion pipe comprises, in order, an inner lining layer 1, an inner structural layer 2, a hollow layer 3, an outer structural layer 4, a spiral rib layer 5, a metal mesh layer 6, and an outer protective layer 7. Each layer is bonded and solidified to form a monolithic structure. The gap between the metal mesh layer 6 and the spiral rib layer 5 is filled with filler 8. The outer protective layer 7 covers the outside of the metal mesh layer 6 and is fixedly bonded.

[0040] Specifically, the inner lining layer 1 is formed by alternatingly stacking glass fiber surface felt, glass fiber knitted felt and mesh cloth. The materials are bonded and fixed by a resin layer to form a smooth, corrosion-resistant inner wall, which is suitable for conveying various water or chemical liquids.

[0041] The thickness of the inner lining layer 1 is 1.2-1.5 mm. This design ensures excellent corrosion resistance of the inner wall, allows for smooth flow of the internal fluid, and reduces flow resistance. Especially in chemical media transportation scenarios, the smooth inner wall effectively prevents the adhesion of deposits, extending the service life of the pipeline. In industrial production, such as the transportation of acid and alkaline liquids in chemical plants, the material selection and thickness design of the inner lining layer 1 can significantly reduce maintenance costs caused by corrosion, while also improving the overall service life and operating efficiency of the pipeline.

[0042] The inner structural layer 2 and the outer structural layer 4 are both made of glass fiber yarn or basalt fiber yarn mixed with epoxy resin or o-phthalic unsaturated resin by reciprocating winding. The thickness of the inner structural layer is about 1% of the pipe diameter.

[0043] It's important to understand that this winding method ensures the pipe has sufficient strength to withstand the pressure of the internal fluid. Furthermore, the inner and outer structural layers 2 and 4 support each other, allowing the pipe to maintain its shape when subjected to external stress. This significantly enhances the pipe's resistance to deformation, ensuring its reliability, especially during high-pressure fluid transfer or in complex construction environments. For example, in oil pipeline transportation, high-pressure transmission conditions require the pipe to possess excellent pressure resistance and structural strength. The composite design of the inner and outer structural layers 2 and 4 effectively addresses this issue.

[0044] In this embodiment, the hollow layer 3 is composed of a number of hollow polymer plastic pipes 301 with a D-shaped cross-section surrounding the outer surface of the inner structural layer 2 and bonded to the inner structural layer 2. The bottom surfaces of these pipes 301 are tightly fitted with the inner structural layer 2, and adjacent pipes 301 can be alternately bonded to enhance the overall structural strength of the hollow layer 3. The design of the hollow layer 3 not only provides additional pressure resistance under high-pressure environments, but also uses its cross-sectional shape to achieve weight reduction while maintaining a high pressure-bearing capacity. It is particularly suitable for high-load transportation scenarios. For example, in projects for long-distance transportation of industrial liquids, the presence of the hollow layer 3 significantly improves the structural stability of the pipeline. In addition, the hollow layer 3 also has a heat-insulating effect, which can reduce heat leakage during the transportation of high-temperature media, thereby improving transportation efficiency. Especially in the oil and gas industry, reducing heat loss during long-distance transportation helps save a lot of energy.

[0045] In this embodiment, the spiral rib layer 5 is composed of a number of long glass fiber filaments mixed with resin, which are radially tightly gathered into ribs 501 and spirally wound on the outer surface of the outer structural layer. The spiral pitch of the spiral rib 501 is 50-100 mm.

[0046] In addition, the rib 501 is cylindrical and is bonded to the outer structural layer 4, which enhances the radial rigidity and impact resistance of the pipeline. When impacted by external objects, the spiral rib layer 5 structure can effectively disperse the impact force and reduce stress concentration at a single location, especially in harsh construction environments or when heavy objects may collide during transportation.

[0047] It should be understood that the spiral rib layer 5 effectively prevents damage to the pipeline.

[0048] In this embodiment, the metal mesh layer 6 is wrapped around the outer surface of the spiral rib layer, and the gap between the metal mesh layer and the spiral rib layer is filled with a filler 8 made of foamed polyethylene. The metal mesh layer 6 primarily enhances the pipe's resistance to mechanical damage and, through synergistic action with the spiral rib layer 5, further improves the pipe's overall strength.

[0049] It should be understood that, first of all, the metal mesh layer 6 can effectively prevent external mechanical damage, such as scratches and impacts that may be encountered during construction or transportation. As a line of defense, the metal mesh layer 6 can effectively protect the internal structure of the pipeline.

[0050] In the above structure, the filler 8 is made of foamed polyethylene, which is lightweight and has good cushioning properties. It can effectively fill the gap between the metal mesh layer 6 and the spiral rib layer 5, providing additional impact protection. The presence of the filler 8 enables the pipeline to effectively absorb energy when subjected to external forces, reduce stress concentration, and thus reduce the risk of pipeline damage. In addition, the use of foamed polyethylene ensures the overall lightweight of the pipeline, making it easy to transport and install. It is particularly suitable for pipelines laid in complex terrains, such as in mountainous areas or high-altitude environments. The filler 8 also has certain thermal insulation properties, which can further reduce heat diffusion during the transportation of high-temperature fluids and improve the thermal efficiency of the pipeline.

[0051] In this embodiment, outer protective layer 7 is a fiberglass reinforced plastic tube with a thickness of 3-5 mm. It covers the exterior of metal mesh layer 6 and is bonded to metal mesh layer 6 to provide external protection. The primary function of outer protective layer 7 is to prevent direct damage to the pipeline from the external environment and improve the pipeline's corrosion resistance. Especially in scenarios where the pipeline is exposed to extreme environments such as wind and rain for long periods of time, outer protective layer 7 effectively resists erosion from factors such as ultraviolet rays, moisture, and acid rain, significantly extending the pipeline's service life.

[0052] In this embodiment, at least one leakage detection sensor 9 is provided in the hollow layer 3 for monitoring in real time whether there is liquid leakage in the hollow layer 3. Once a leakage is detected, the sensor will immediately send out an alarm signal to remind the staff to carry out maintenance. The leakage detection sensor 9 plays a vital role in the pipeline system, especially when transporting toxic or harmful liquids. Leakage can be detected at the first time to avoid the damage to the environment and personnel caused by liquid leakage. In the hazardous liquid transportation system of a chemical plant, the integration of the leakage detection sensor 9 makes the pipeline system more intelligent and improves the level of safety control. For example, when transporting hazardous chemicals such as chlorides, the leakage detection sensor 9 can alarm in time, so that emergency measures can be taken to prevent environmental pollution and accidents. The design of the sensor ensures the reliability of the pipeline in a complex environment and effectively guarantees the safe operation of the transportation system.

[0053] Although exemplary embodiments of the present disclosure have been described, it will be understood by those skilled in the art that various changes and modifications may be made to the exemplary embodiments of the present disclosure without departing substantially from the spirit and scope of the present disclosure. Therefore, all such changes and modifications are intended to be within the scope of protection of the present disclosure as defined by the appended claims. The present disclosure is defined by the appended claims, and equivalents of these claims are intended to be included therein.

Claims

1. A fiber composite infusion pipe, characterized by: The pipe comprises an inner lining layer, an inner structural layer, a hollow layer, an outer structural layer, a spiral rib layer, a metal mesh layer, and an outer protective layer from the inside out. The inner lining layer, the inner structural layer, the hollow layer, the outer structural layer, and the spiral rib layer are bonded together. The metal mesh layer is sleeved outside the spiral rib layer, and the gap between the metal mesh layer and the spiral rib layer is filled with filler. The outer protective layer is sleeved outside the metal mesh layer and bonded to the metal mesh layer. The inner lining layer is composed of glass fiber surface felt, glass fiber knitted felt, and mesh cloth alternately stacked in sequence. A resin layer is sandwiched between each layer to bond the layers together; the inner structural layer and the outer structural layer are made of glass fiber yarn or basalt fiber yarn mixed with resin wound back and forth; the hollow layer is composed of a number of hollow pipes with a D-shaped cross-section arranged coaxially with the pipeline and arranged around the outer surface of the structural layer; the hollow layer is provided with at least one leakage detection sensor; the spiral rib layer is composed of ribs spirally wound and bonded to the outer surface of the outer structural layer, and the ribs are composed of a number of long glass fiber filaments mixed with resin that are radially tightly gathered.

2. A fiber composite infusion pipe as claimed in claim 1, characterized in that: The lining layer is 1.2-1.5 mm thick.

3. The fiber composite infusion pipe according to claim 1, characterized in that: The thickness of the inner structural layer is 1% of the pipe diameter.

4. The fiber composite infusion pipe according to claim 1, characterized in that: The bottom transverse surface of each pipe piece of the hollow layer is adhered to the outer surface of the inner structural layer.

5. The fiber composite infusion pipe according to claim 1, characterized in that: The pipes of the hollow layer are alternately adhered to the outer surface of the structural layer.

6. The fiber composite liquid infusion pipe according to claim 1, characterized in that: The pipes in the hollow layer are pipes with a ring stiffness of 10,000.

7. The fiber composite liquid infusion pipe according to claim 1, characterized in that: The outer surface of the pipe in the hollow layer is smooth.

8. The fiber composite liquid infusion pipe according to claim 1, characterized in that: The outer structural layer is 5-10 mm thick.

9. The fiber composite infusion pipe according to claim 1, characterized in that: The hollow layer is adhered to the inner surface of the outer structural layer.

10. The fiber composite liquid infusion pipe according to claim 1, characterized in that: The spiral pitch of the ribs of the spiral rib layer is 50-100 mm.

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