Hydrogen delivery conduit and hydrogen delivery mechanism

Abstract

The utility model relates to a kind of hydrogen delivery pipeline and hydrogen delivery mechanism, belong to hydrogen delivery technical field.Hydrogen delivery pipeline includes: core pipe layer;Composite reinforcement component is made by continuous fiber winding and is set outside core pipe layer;Composite reinforcement component includes at least two layers of composite reinforcement layer set from inside to outside, and the fiber winding direction of adjacent two set composite reinforcement layer is different;Protective layer is formed outside composite reinforcement component by heating;Mounting layer is set to the outside of at least part protective layer, suitable for being connected with target mounting piece and fixed.In the above-mentioned mode, composite reinforcement component can improve the overall compression strength of hydrogen delivery pipeline, so that it can prevent hydrogen leakage caused by pipeline rupture due to excessive hydrogen pressure during hydrogen delivery process;Meanwhile, mounting layer is provided, which facilitates the subsequent installation of hydrogen delivery pipeline, and the presence of mounting layer can also improve the sealing of the connection between the delivery pipeline, further preventing hydrogen leakage.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen transportation technology, and in particular to a hydrogen transportation pipeline and hydrogen transportation mechanism. Background Technology

[0002] Fossil fuels are a major contributor to greenhouse gases. With increasing global attention to clean energy and dwindling fossil fuel reserves, more and more countries and companies are exploring the development of new and clean energy sources. Hydrogen, as a clean energy source that produces completely harmless H2O upon combustion, is gaining increasing attention. However, hydrogen is flammable, explosive, and has the smallest atomic size, making it capable of leaking through most materials. If the leaked concentration reaches the lower explosive limit, it will cause enormous damage to life and property.

[0003] Because hydrogen molecules are small, ordinary pipe materials are unsuitable for transporting hydrogen, as they are prone to leakage. Currently, existing technologies primarily use aluminum, copper, or nylon as hydrogen molecule barrier materials to construct corresponding pipelines for hydrogen transportation. However, due to hydrogen's low density—its volume is more than three times that of natural gas for the same energy—a significantly larger volume of hydrogen needs to be transported to deliver sufficient energy. This necessitates pipelines that can withstand much higher pressures to achieve the same energy delivery capacity as natural gas. Aluminum, copper, or nylon pipes often fail to meet the pressure requirements for hydrogen transportation, leading to pipe rupture and leakage if the pressure becomes too high, thus maintaining potential safety hazards during transport. Utility Model Content

[0004] To address the aforementioned problems in the prior art, this utility model provides a hydrogen transportation pipeline, comprising:

[0005] Core layer;

[0006] A composite reinforcement assembly is formed by continuous fiber winding and disposed on the outside of the core tube layer; the composite reinforcement assembly includes at least two composite reinforcement layers disposed from the inside to the outside, and the fiber winding directions of two adjacent composite reinforcement layers are opposite.

[0007] A protective layer is formed on the outside of the composite reinforced component by heat molding;

[0008] An installation layer is disposed on the outside of at least a portion of the protective layer and is adapted to be connected and fixed to the target mounting component.

[0009] In one embodiment, the mounting layer has a first mounting portion, and the target mounting member is provided with a second mounting portion that mates with the first mounting portion;

[0010] When the target mounting component is installed on the mounting layer, the first mounting part and the second mounting part are sealed together.

[0011] In one embodiment, the mounting layer has an outer surface, and the first mounting portion is formed by recessing a plurality of spaced grooves from the outer surface inward.

[0012] In one embodiment, the mounting layer has an outer surface, and the first mounting portion is formed by a plurality of spaced threads recessed inward from the outer surface.

[0013] In one embodiment, the mounting layer is integrally formed with the protective layer, and the mounting layer is disposed near the end of the protective layer.

[0014] In one embodiment, the protective layer is made of any one of polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyamide, and polycarbonate.

[0015] In one embodiment, each of the composite reinforcing layers is made of any one of glass fiber, basalt fiber, aramid fiber, polyester fiber, and carbon fiber.

[0016] In one embodiment, the core tube layer is made of any one of aluminum, copper, and nylon.

[0017] This utility model also provides a hydrogen transport mechanism, including a hydrogen transport pipe and a clamp connected to the hydrogen transport pipe, wherein the hydrogen transport pipe is the hydrogen transport pipe as described above.

[0018] In one embodiment, the hydrogen conveying mechanism further includes a flange connected to the clamp and a seal disposed between the flange and the clamp.

[0019] The beneficial effects of this utility model are reflected in the fact that by providing a composite reinforcement component made of continuous fiber winding and disposed on the outside of the core tube layer, and the composite reinforcement component including at least two composite reinforcement layers disposed from the inside to the outside with opposite fiber winding directions of adjacent composite reinforcement layers, it can provide mechanical support for the core tube layer, thereby improving the overall compressive strength of the hydrogen transportation pipeline, and can prevent hydrogen leakage caused by pipeline rupture due to excessive hydrogen pressure during hydrogen transportation; at the same time, the installation layer is provided to facilitate the subsequent installation between hydrogen transportation pipelines, and the presence of the installation layer can also improve the sealing of the connection between transportation pipelines, further preventing hydrogen leakage. Attached Figure Description

[0020] Figure 1 A schematic diagram of the hydrogen transport pipeline provided by this utility model;

[0021] Figure 2This is another structural schematic diagram of the hydrogen transport pipeline provided by this utility model;

[0022] Figure 3 This is a schematic diagram of the hydrogen transport pipeline and the target installation component provided by this utility model, without connection.

[0023] Figure 4 This is a cross-sectional schematic diagram of the hydrogen transport pipeline provided by this utility model;

[0024] Figure 5 for Figure 4 A partial structural diagram.

[0025] Figure label:

[0026] 100 - Hydrogen transmission pipeline; 200 - Target installation component;

[0027] 1-Core tube layer; 2-Composite reinforcement component; 21-Composite reinforcement layer; 3-Protective layer; 4-Mounting layer. Detailed Implementation

[0028] 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.

[0029] Example 1:

[0030] Reference Figures 1-5 A preferred embodiment of the present invention provides a hydrogen pipeline 100 for long-distance hydrogen transportation, thereby realizing the transportation of clean energy.

[0031] Hydrogen transportation is a crucial link in the hydrogen energy industry chain because hydrogen is one of the least dense gases (at normal temperature and pressure), and its energy content per unit volume is very low (about one-third that of natural gas). Therefore, if we want to transport hydrogen with sufficient energy, a larger volume of hydrogen needs to be transported.

[0032] However, due to the extremely small size of hydrogen molecules, they can easily leak through tiny gaps or even the materials themselves. Hydrogen leaked into the air has a wide flammability range (4%-75% by volume concentration), extremely low ignition energy (only 1 / 10 of that of natural gas), a colorless flame, and a fast combustion speed, thus causing numerous safety issues and posing many challenges to hydrogen transportation.

[0033] In existing technologies, aluminum, copper, or nylon are generally used as barrier materials for hydrogen molecules to construct corresponding delivery pipes for transporting hydrogen. Aluminum naturally forms a dense oxide film on its surface in air, thus preventing hydrogen atoms from penetrating into the metal lattice. Furthermore, aluminum has a face-centered cubic structure with small intergranular gaps, allowing hydrogen atoms to diffuse and preventing them from accumulating at grain boundaries and causing brittle fracture.

[0034] Copper also has a face-centered cubic structure with small intercalary lattice gaps, allowing hydrogen atoms to diffuse and preventing them from accumulating at grain boundaries and causing brittle fracture. Furthermore, copper has excellent ductility, allowing for easy release of localized stress and inhibiting crack initiation. Additionally, copper can be welded or brazed to achieve leak-free connections, facilitating subsequent pipe installation.

[0035] Nylon, on the other hand, is a non-metal, which can completely avoid the problem of metal hydrogen embrittlement caused by hydrogen atom penetration. At the same time, its molecular chain contains amide groups, so it will not react with hydrogen gas.

[0036] However, as mentioned above, due to the low energy content of hydrogen, a larger volume of hydrogen needs to be transported to deliver a sufficient amount of energy. This would require the pipelines transporting hydrogen to withstand higher pressures to achieve the same energy delivery volume as natural gas. The aluminum, copper, or nylon pipes mentioned above are unlikely to meet the pressure requirements for hydrogen transport, thus the safety issue of pipeline rupture and hydrogen leakage during transport remains.

[0037] To address the aforementioned technical issues, the hydrogen transport pipeline 100 in this embodiment includes a core tube layer 1, a composite reinforcement component 2, and a protective layer 3.

[0038] The core tube layer 1 is made of any one of aluminum, copper, and nylon. The composite reinforcement component 2 is made by continuous fiber winding and is disposed on the outside of the core tube layer 1, providing mechanical strength support for the core tube layer 1 and providing ultra-high compressive strength to the core tube layer 1.

[0039] In this embodiment, the composite reinforcement component 2 includes at least two composite reinforcement layers 21 disposed from the inside out, with the fiber winding directions of adjacent composite reinforcement layers 21 being opposite. That is, the fiber spiral directions of adjacent composite reinforcement layers 21 are alternating, and the fiber directions between layers are staggered, significantly improving the circumferential and axial strength, thereby suppressing crack propagation. This embodiment does not specifically limit the number of composite reinforcement layers 21, which can be determined according to the actual situation to ensure the strength of the core tube layer 1.

[0040] In this embodiment, the material of each composite reinforcing layer 21 is any one of glass fiber, basalt fiber, aramid fiber, polyester fiber and carbon fiber.

[0041] The protective layer 3 is formed on the outside of the composite reinforcing component 2 by heat treatment, providing protection against corrosion and mechanical damage. In this embodiment, the protective layer 3 is formed on the outside of the composite reinforcing component 2 by infrared heating. Its surface is heated by infrared radiation, ensuring the fusion between the core tube layer 1 and the composite reinforcing component 2, thereby guaranteeing complete adhesion and improving hardness and strength.

[0042] In this embodiment, the material of the protective layer 3 is any one of polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyamide, and polycarbonate.

[0043] To facilitate the installation of the hydrogen pipeline 100 and improve its sealing performance after installation, the hydrogen pipeline 100 in this embodiment further includes an installation layer 4, which is disposed on the outside of at least part of the protective layer 3 and is suitable for connection and fixation with the target mounting component 200.

[0044] The mounting layer 4 has a first mounting portion 41, and the target mounting member 200 has a second mounting portion that mates with the first mounting portion 41; when the target mounting member 200 is mounted on the mounting layer 4, the first mounting portion 41 and the second mounting portion are sealed together. In this embodiment, the target mounting member 200 is a clamp.

[0045] The first mounting part 41 can be formed by hot working, which further ensures the fusion between the core tube layer 1 and the composite reinforcement component 2, so as to improve the connection strength between the two.

[0046] In one embodiment, the mounting layer 4 has an outer surface, and the first mounting portion 41 is recessed from the outer surface inward to form a plurality of spaced grooves. Correspondingly, the second mounting portion also has a plurality of spaced grooves, and the grooves of the first mounting portion 41 and the second mounting portion are staggered to achieve mechanical interlocking, thereby achieving a seal.

[0047] In another embodiment, the mounting layer 4 has an outer surface, and the first mounting portion 41 is recessed inward from the outer surface to form a plurality of spaced threads. Correspondingly, the second mounting portion has a liquid level thread, and the threads of the first mounting portion 41 and the second mounting portion are misaligned to achieve mechanical interlocking, thereby achieving a seal.

[0048] Furthermore, in order to enhance the mechanical connection strength between the mounting layer 4 and the protective layer 3, the mounting layer 4 is integrally formed with the protective layer 3, and the mounting layer 4 is located near the end of the protective layer 3.

[0049] This utility model also provides a hydrogen conveying mechanism, including a hydrogen conveying pipe 100 and a clamp connected to the hydrogen conveying pipe 100, wherein the hydrogen conveying pipe 100 is as described above. The hydrogen conveying mechanism also includes a flange connected to the clamp and a sealing element disposed between the flange and the clamp. In this embodiment, the sealing element is a sealing gasket.

[0050] In summary: By incorporating a composite reinforcement component 2 made of continuous fiber winding, and placing the composite reinforcement component 2 on the outside of the core tube layer 1, mechanical support can be provided for the core tube layer 1, thereby improving the overall compressive strength of the hydrogen transmission pipeline 100. Furthermore, it can prevent hydrogen leakage caused by pipeline rupture due to excessive hydrogen pressure during hydrogen transmission. Simultaneously, the installation layer 4 facilitates subsequent installation between hydrogen transmission pipelines 100, and the presence of the installation layer 4 also improves the sealing of the connections between transmission pipelines, further preventing hydrogen leakage.

[0051] In the description of the embodiments of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "center," "top," "bottom," "top," "bottom," "inner," "outer," "inner side," and "outer side," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. "Inner side" refers to the interior or enclosed area or space. "Outer perimeter" refers to the area surrounding a specific component or specific area.

[0052] In the description of embodiments of this utility model, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0053] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "assembly" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0054] In the description of the embodiments of this utility model, specific features, structures, materials or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0055] In the description of the embodiments of this utility model, it should be understood that "-" and "~" represent a range of two values, and this range includes the endpoints. For example, "AB" represents a range greater than or equal to A and less than or equal to B. "A~B" represents a range greater than or equal to A and less than or equal to B.

[0056] In the description of the embodiments of this utility model, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0057] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydrogen transportation pipeline, characterized in that, include: Core layer; A composite reinforcement assembly is formed by continuous fiber winding and disposed on the outside of the core tube layer; the composite reinforcement assembly includes at least two composite reinforcement layers disposed from the inside to the outside, and the fiber winding directions of two adjacent composite reinforcement layers are opposite. A protective layer is formed on the outside of the composite reinforced component by heat molding; An installation layer is disposed on the outside of at least a portion of the protective layer and is adapted to be connected and fixed to the target mounting component.

2. The hydrogen transportation pipeline according to claim 1, characterized in that, The mounting layer has a first mounting portion, and the target mounting component is provided with a second mounting portion that cooperates with the first mounting portion; When the target mounting component is installed on the mounting layer, the first mounting part and the second mounting part are sealed together.

3. The hydrogen transportation pipeline according to claim 2, characterized in that, The mounting layer has an outer surface, and the first mounting portion is formed by recessing into the outer surface to create a plurality of spaced grooves.

4. The hydrogen transport pipeline according to claim 2, characterized in that, The mounting layer has an outer surface, and the first mounting portion is formed by recessing into the outer surface to form a plurality of spaced threads.

5. The hydrogen transport pipeline according to any one of claims 1 to 4, characterized in that, The mounting layer and the protective layer are integrally formed, and the mounting layer is located at the end near the protective layer.

6. The hydrogen transport pipeline according to claim 5, characterized in that, The protective layer is made of any one of polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyamide, and polycarbonate.

7. The hydrogen transport pipeline according to any one of claims 1 to 4, characterized in that, The material of each composite reinforcing layer is any one of glass fiber, basalt fiber, aramid fiber, polyester fiber, and carbon fiber.

8. The hydrogen transport pipeline according to any one of claims 1 to 4, characterized in that, The core tube layer is made of any one of aluminum, copper, and nylon.

9. A hydrogen transport mechanism, characterized in that, It includes a hydrogen transport pipeline and a clamp connected to the hydrogen transport pipeline, wherein the hydrogen transport pipeline is a hydrogen transport pipeline as described in any one of claims 1 to 8.

10. The hydrogen transport mechanism as described in claim 9, characterized in that, The hydrogen conveying mechanism also includes a flange connected to the clamp, and a sealing element disposed between the flange and the clamp.

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