Modularized offshore hydrogen production and storage platform

Abstract

The utility model belongs to the technical field of offshore new energy preparation platforms, and particularly relates to a modularized offshore hydrogen production and storage platform, which comprises a plurality of pile foundations inserted into a mud surface; the multiple groups of first supporting pieces are arranged at intervals, and a carrying platform used for carrying hydrogen production equipment is arranged on the first supporting pieces; the two ends of the second supporting piece are inserted into the first supporting piece and the pile foundation correspondingly; the multiple third supporting pieces are inserted into the pile foundations in a one-to-one correspondence mode, and the hydrogen storage equipment is arranged below the object carrying platform and fixedly connected to the third supporting pieces; the hydrogen storage equipment is located below the sea level, and the first supporting piece is at least higher than the sea level; the hydrogen production equipment is communicated with the hydrogen storage equipment through a hydrogen pipe, and the hydrogen storage equipment is communicated with the external environment through a water pipe. Therefore, the problems that an offshore hydrogen production platform and an offshore hydrogen storage platform are difficult to build on the same platform, operation is tedious, maintenance is inconvenient, and cost is high are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of offshore new energy preparation platforms, and particularly relates to a modular offshore hydrogen production and storage platform. Background Technique

[0002] As offshore wind farms are getting farther and farther away from the shore, the power transmission cost is also getting higher and higher. Therefore, using offshore wind power to produce hydrogen and transporting it through a part of the existing natural gas pipeline network, eliminating the investment in outgoing cables, has become the most potential solution to reduce the cost of offshore wind power.

[0003] With the addition of equipment related to offshore hydrogen production, the investment cost of offshore wind farms has also increased. Therefore, controlling the investment related to offshore hydrogen production has become an inevitable trend for future offshore wind power and hydrogen production. For offshore hydrogen production and storage operations, it is considered to build a hydrogen production platform and a hydrogen storage platform correspondingly at sea. However, limited by the production scale of the produced hydrogen, hydrogen production and storage are often separated. Therefore, for projects that completely produce and store hydrogen at sea, it is often necessary to build a hydrogen production platform and a hydrogen storage platform at the same time, and the related hydrogen production equipment and hydrogen storage equipment are all placed on the upper part of the platform.

[0004] In terms of hydrogen storage, sufficient storage space needs to be ensured to guarantee enough storage space. However, after the hydrogen storage space increases, it will directly affect the scale of the upper platform, further affecting the lower support structure and piles, and ultimately leading to an increase in the construction scale and investment scale of the entire platform. The existing method of separately building hydrogen production and storage platforms increases the construction cost of offshore wind power and offshore hydrogen production platforms. At the same time, there are also pressures on the transportation and turnover of hydrogen. One is the difficulty of offshore wiring, leakage and faults, and it is inconvenient to troubleshoot; the other is the cumbersome turnover, which requires auxiliary operations through other equipment, with cumbersome operations and low efficiency.

[0005] Therefore, in view of the problem that it is difficult to build offshore hydrogen production and storage platforms on the same platform in the existing technology, resulting in cumbersome operations, inconvenient maintenance and high costs, a more reasonable technical solution is still needed to solve the current technical problems. Content of the Utility Model

[0006] The purpose of the utility model is to provide a modular offshore hydrogen production and storage platform to solve the problems in the existing technology that it is difficult to build offshore hydrogen production and storage platforms on the same platform, resulting in cumbersome operations, inconvenient maintenance and high costs.

[0007] To achieve the above purpose, the utility model provides a modular offshore hydrogen production and storage platform, including:

[0008] Pile foundations, configured as multiple and inserted into the mud surface;

[0009] The first support members are provided in multiple groups at intervals, and a load platform for carrying a hydrogen production device is provided on the first support members;

[0010] The second support member, with its two ends respectively inserted into the first support member and the pile foundation; and

[0011] The third support members are provided in multiple numbers and are respectively inserted into the pile foundations one by one. The hydrogen storage device is arranged below the load platform and fixedly connected to the third support members;

[0012] Wherein, the hydrogen storage device is located below the sea level, and the height of the first support member is at least higher than the sea level; the hydrogen production device is connected to the hydrogen storage device through a hydrogen pipe, and the hydrogen storage device is connected to the external environment through a water pipe.

[0013] In a possible design, a first insertion platform is provided at the lower end of the first support member, the upper end of the second support member is formed into a second slot matching the first insertion platform, and the lower end is formed into a second insertion platform adapted to the pile foundation, so that the second support member can be inserted into the pile foundation, and the lower end of the first support member can be inserted into the second support member.

[0014] In a possible design, the first support members are provided in four groups and arranged in a matrix; the second support members are provided in a number matching the first support members and are correspondingly arranged relative to the first support members.

[0015] In a possible design, the modular offshore hydrogen production and storage platform further includes a first strengthening member, which is vertically arranged and fixedly connected to adjacent first support members along a longitudinal plane.

[0016] In a possible design, the first strengthening member is in a cross shape and has two connection ends on the same side, and the two connection ends are respectively connected to the upper and lower ends of the same first support member.

[0017] In a possible design, the modular offshore hydrogen production and storage platform further includes a second strengthening member, which is horizontally arranged and fixedly connected to the first strengthening member along a transverse plane.

[0018] In a possible design, the second strengthening member is connected to the midpoint position of the first strengthening member.

[0019] In a possible design, the third support members are located outside the second support members; the third support members are provided in four numbers and arranged in a matrix.

[0020] In a possible design, the hydrogen storage device has a box-shaped structure, and an inclined guiding surface is provided in the outer region of the hydrogen storage device.

[0021] In a possible design, both the hydrogen pipe and the water pipe are welded to the second support member.

[0022] The modular design of the platform enables it to be expanded and maintained as needed. When the hydrogen production or storage capacity needs to be increased, new modules can be conveniently added; when a fault occurs in the equipment, the faulty module can also be repaired or replaced individually without affecting the operation of the entire platform. The platform has strong adaptability and can be used in different marine environments. Whether in shallow or deep sea areas, as long as reasonable pile foundation design and support member configuration are adopted, the stability and safety of the platform can be ensured.

[0023] Through the above technical solution, the hydrogen production equipment and the hydrogen storage equipment are concentrated on one platform, realizing the integrated operation of hydrogen production and storage. Moreover, the transmission line is short, which can improve the energy transfer efficiency and reduce the waiting time, and has good practicability. At the same time, since the layout of the hydrogen transmission pipelines from the hydrogen production platform to the hydrogen storage platform in the traditional platform is reduced, the construction cost is also reduced to a certain extent, and it is convenient for maintenance, and the cost of separately constructing a hydrogen storage platform is also reduced to a large extent. In the underwater hydrogen storage equipment, the replacement of hydrogen and water is realized according to the characteristics of the incompatibility and different densities of hydrogen and water, and the internal pressure can be used to improve the efficiency of hydrogen transmission and hydrogen discharge, and the efficient transmission of hydrogen can be realized with reduced energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is a front view structural schematic diagram of the modular offshore hydrogen production and storage platform provided by the present invention in an embodiment;

[0026] Figure 2 It is a top view structural schematic diagram of the modular offshore hydrogen production and storage platform provided by the present invention in an embodiment;

[0027] Figure 3 It is a partial structural schematic diagram of the modular offshore hydrogen production and storage platform provided by the present invention in an embodiment.

[0028] In the above-mentioned drawings: 1 - first support member, 2 - second support member, 3 - second support member, 4 - pile foundation, 51 - hydrogen pipe, 52 - water pipe, 6 - first reinforcing member, 7 - second reinforcing member, 8 - hydrogen production equipment, 81 - guiding surface, 9 - hydrogen storage equipment, 10 - load platform, 11 - mud surface, 12 - sea level. Detailed implementation manners

[0029] The present utility model will be further described below in conjunction with the drawings and specific embodiments. It should be noted here that the description of these embodiment manners is for helping to understand the present utility model, but does not constitute a limitation to the present utility model.

[0030] The specific structural and functional details disclosed herein are only used to describe the embodiments of the examples of the present utility model. However, the present utility model can be embodied in many alternative forms and should not be construed as being limited to the embodiments described herein.

[0031] According to the specific implementation manners of the present disclosure, a modular offshore hydrogen production and storage platform for hydrogen production equipment and hydrogen storage equipment is provided. Among them, Figures 1 to 3 One of the specific embodiments is shown.

[0032] Refer to Figures 1 to 3 As shown, the modular offshore hydrogen production and storage platform includes: a pile foundation 4, configured to be multiple and inserted into the mud surface 11; a first support member 1, configured to be multiple groups arranged at intervals, and a load platform 10 for carrying the hydrogen production equipment 8 is provided on the first support member 1; a second support member 2, with both ends respectively inserted into the first support member 1 and the pile foundation 4; and a third support member, configured to be multiple and inserted into the pile foundation 4 one by one, and the hydrogen storage equipment 9 is arranged below the load platform 10 and fixedly connected to the third support member; wherein, the hydrogen storage equipment 9 is located below the sea level 12, and the height of the first support member 1 is at least higher than the sea level 12; the hydrogen production equipment 8 is connected to the hydrogen storage equipment 9 through a hydrogen pipe 51, and the hydrogen storage equipment 9 is connected to the external environment through a water pipe 52.

[0033] The construction process of the modular offshore hydrogen production and storage platform is outlined as follows: The underwater hydrogen storage equipment 9 can be towed to the site in the form of wet towing. After arriving at the site, by injecting water into the underwater hydrogen storage equipment 9, the underwater hydrogen storage equipment 9 sinks to the mud surface 11 at the bottom of the sea for leveling. At the same time, the underwater hydrogen storage equipment 9 is fixed to the seabed by using the third support member and the pile foundation 4.

[0034] When installing the main body platform, first drive piles, and then install the lower foundation (i.e., the second support member 2 and the first support member 1) to achieve position fixation. Generally, the second support member 2 can be installed first. After it is installed in place, the first support member 1 is installed, and finally the upper load platform 10 is installed. After all the installation foundations are assembled, the second support member 2 and the underwater hydrogen storage platform are welded and fixed.

[0035] After the hydrogen production operation is completed, the hydrogen is transported to the underwater hydrogen storage device 9 through the hydrogen pipe 51 for introducing hydrogen by using a ballast pump. Due to the characteristics that hydrogen is insoluble in water and has a lower density than water, the hydrogen will immediately fill the upper space of the underwater hydrogen storage device 9, and then the water originally in the underwater hydrogen storage device 9 is discharged through the drain pipe 52, thereby realizing hydrogen storage and drainage.

[0036] When hydrogen needs to be externally transported, only need to open the control valve switch on the hydrogen pipe 51 for export, and let the hydrogen automatically discharge by using the internal original pressure in the underwater hydrogen storage device 9, quickly realizing hydrogen delivery. During the discharge process of hydrogen, due to the action of the external atmospheric pressure, seawater will automatically fill the underwater hydrogen storage device 9. This way of hydrogen and water replacement can always ensure the system pressure in the underwater hydrogen storage device, facilitating the input and discharge of hydrogen.

[0037] Through the design of the pile foundation 4 and the support members (the first support member, the second support member, and the third support member), this platform is firmly established in the marine environment, effectively utilizing the marine space and providing a stable place for hydrogen production and storage. Even in the case of tight land resources, the energy production capacity can be expanded through the ocean, and it meets the requirements of environmental protection and sustainability.

[0038] The hydrogen production device 8 on the platform can extract hydrogen from seawater through specific technologies (such as electrolysis of water, etc.), thereby realizing hydrogen production at sea, not only reducing the dependence on land resources, but also utilizing rich marine resources such as renewable energy sources like solar energy and wind energy to drive the hydrogen production process.

[0039] The hydrogen storage device 9 is located below sea level 12, which can increase the safety of hydrogen storage. Since hydrogen is a flammable and explosive gas, storing it underwater can reduce the risks of fire and explosion. In addition, connected to the external environment through the water pipe 52, the hydrogen storage device 9 can also use seawater for cooling, further improving the storage safety.

[0040] The modular design of the platform enables it to be expanded and maintained as needed. When there is a need to increase hydrogen production or storage capacity, new modules can be conveniently added; when a device fails, the faulty module can also be repaired or replaced individually without affecting the operation of the entire platform. The platform has strong adaptability and can be used in different marine environments. Whether in shallow or deep sea areas, as long as reasonable pile foundation 4 design and support member configuration are adopted, the stability and safety of the platform can be ensured.

[0041] Through the above technical solution, the hydrogen production device 8 and the hydrogen storage device 9 are concentrated on one platform, realizing the integrated operation of hydrogen production and storage. Moreover, with a short transmission line, it can improve the energy transfer efficiency and reduce the waiting time, having good practicability; at the same time, since the laying of the hydrogen transmission pipeline from the hydrogen production platform to the hydrogen storage platform in the traditional platform is reduced, the construction cost is also reduced to a certain extent, and it is convenient for maintenance, and the cost of separately building a hydrogen storage platform is also reduced to a large extent. In the underwater hydrogen storage device 9, the replacement of hydrogen and water is realized according to the characteristics of the incompatibility and different densities of hydrogen and water, and the efficiency of hydrogen transmission and hydrogen discharge can be improved by using the internal pressure, and efficient hydrogen transmission can be achieved with reduced energy consumption.

[0042] In an embodiment provided in the present disclosure, a first plug platform is provided at the lower end of the first support member 1, and the upper end of the second support member 2 is formed as a second slot matching the first plug platform, and the lower end is formed as a second plug platform adapted to the pile foundation 4, so that the second support member 2 can be inserted into the pile foundation 4, and the lower end of the first support member 1 can be inserted into the second support member 2.

[0043] The first support member 1 and the second support member 2 are connected by a plug-in method. Different lengths of the first support member 1 can be selected according to actual needs, enabling the platform to adapt to different water depths, seabed topographies, and marine environments, with strong adaptability and flexibility. The lower end of the second support member 2 is provided with a second plug platform adapted to the pile foundation 4, enabling the second support member 2 to be stably inserted into the pile foundation 4, further enhancing the stability of the entire platform. The plug-in design can make the connection relationship between the first support member 1, the second support member 2, and the pile foundation 4 closer after the load platform 10 bears gravity, reducing the safety risks caused by insecure connections. By setting the hydrogen storage device 9 below the sea level 12 and through the stable support of the pile foundation 4 and the support members, the safety and stability of the hydrogen storage device 9 are ensured. This design effectively prevents the influence of natural factors such as wind waves and tides on the hydrogen storage device 9.

[0044] Through the modular design of the first support member 1, the second support member 2 and the pile foundation 4, the entire structure of the platform is easy to assemble, disassemble and transport, which not only improves the construction efficiency but also reduces the maintenance cost. Due to the modular design, the platform can be expanded as needed. When the hydrogen production or hydrogen storage capacity needs to be increased, only the corresponding modules need to be added. The design of the platform meets the requirements of environmental protection and sustainability. By utilizing the renewable energy of the ocean to drive the hydrogen production process, the dependence on fossil fuels is reduced and greenhouse gas emissions are lowered.

[0045] In the present disclosure, the third support member 3 is also inserted into the pile foundation by a structure with hole-shaft fit.

[0046] In one embodiment, four groups of the first support members 1 are arranged in a matrix; the second support members 2 are provided in a number adapted to the first support members 1 and are correspondingly arranged relative to the first support members 1. The four groups of the first support members 1 are arranged in a matrix to form a stable support framework, ensuring the stability of the entire platform, effectively resisting the impact of marine environmental factors such as wind and waves, and guaranteeing the safe operation of the hydrogen production and hydrogen storage equipment 9. At the same time, it can also make the supporting force evenly distributed on the entire platform, avoiding the situation of excessive single-point stress, being beneficial to extending the service life of the platform and reducing potential safety hazards caused by uneven stress.

[0047] In the present disclosure, the modular offshore hydrogen production and hydrogen storage platform further includes a first strengthening member 6. The first strengthening member 6 is vertically arranged and fixedly connected to the adjacent first support members 1 along the longitudinal plane. By being vertically arranged and connecting the adjacent first support members 1, the first strengthening member 6 can form a stable longitudinal support network. This network structure helps to enhance the integrity and functionality of the platform when facing external loads and stresses, enabling it to better resist the impact of marine environmental factors such as wind and waves and tides. When subjected to external loads, the stress can be evenly dispersed to each support member and strengthening member, thus avoiding the situation of single-point stress concentration, and improving the durability and reliability of the platform.

[0048] In the present disclosure, the first strengthening member 6 is in a cross shape and has two connection ends on the same side. The two connection ends are respectively connected to the upper and lower ends of the same first support member 1, which can form a more stable support structure, thereby enhancing the overall stability of the platform and making it more stable when facing marine environmental factors such as wind and waves and tides. At the same time, it can also improve the load-bearing capacity of the platform, enabling the platform to bear greater loads, thus ensuring the safe operation of the hydrogen production and hydrogen storage equipment 9.

[0049] In an embodiment provided by the present disclosure, the modular offshore hydrogen production and storage platform further includes a second reinforcing member 7. The second reinforcing member 7 is horizontally arranged and fixedly connected to the first reinforcing member 6 along the transverse plane, thereby forming a stable transverse support network, which can enhance the transverse stability of the platform, make it more stable in the marine environment, and reduce the shaking and tilting caused by factors such as wind and waves.

[0050] Through the combination of the first reinforcing member 6 and the second reinforcing member 7, the overall structural strength of the platform is further improved. This crisscross reinforcing network makes the platform more robust and durable when facing external impacts and stresses, ensuring the safe operation of the hydrogen production equipment and the hydrogen storage equipment.

[0051] Specifically, the second reinforcing member 7 is connected to the midpoint position of the first reinforcing member 6, so that the first reinforcing member 6 is evenly supported in the vertical direction, reducing deformation or damage caused by stress concentration, thereby further enhancing the structural stability of the entire platform.

[0052] By adopting the connection method at the midpoint position, when the first reinforcing member 6 is subjected to an external force, the force can be more evenly transmitted to the second reinforcing member 7. In this way, not only the stress condition of the first reinforcing member 6 itself is improved, but also the force distribution of the entire platform is more reasonable, which helps to improve the bearing capacity and stability of the platform.

[0053] In the present disclosure, the third support member is located outside the second support member 2; four third support members are provided and arranged in a matrix. This can facilitate quick positioning to distinguish it from the second support member. At the same time, it can also increase the storage space of the hydrogen storage device 9 to a certain extent. The matrix arrangement of the third support members makes the hydrogen storage device 9 more balanced and stable in structure.

[0054] In an embodiment, the hydrogen storage device 9 has a box-shaped structure, and an inclined guiding surface 81 is provided in the outer region of the hydrogen storage device 9. The box-shaped hydrogen storage device 9 itself has good waterproof performance, and the inclined guiding surface 81 further enhances this performance, making it more difficult for seawater to enter the interior of the device, which helps to protect the hydrogen in the hydrogen storage device 9 from being polluted by seawater and ensures the quality and purity of the hydrogen.

[0055] The marine environment is complex and changeable, and the impact of waves is inevitable. The inclined guiding surface 81 can cause a certain diversion effect when the waves contact the hydrogen storage device 9, reducing the direct impact of the waves on the device. In addition, salts, microorganisms and other corrosive substances in seawater may erode the hydrogen storage device 9. The inclined guiding surface 81 can make the seawater slide down along the guiding surface 81 when it contacts the hydrogen storage device 9, reducing the time of staying and accumulating on the surface of the device, thereby reducing the erosion effect of seawater on the device.

[0056] In the present disclosure, both the hydrogen pipe 51 and the water pipe 52 are welded to the second support member 2.

[0057] To prevent the underwater hydrogen storage device 9 from being unstable, the underwater hydrogen storage device 9 is respectively connected to the four pile foundations 4 in a welded form, and the pile foundations 4 penetrate through the underwater hydrogen storage device 9. In this way, the pile foundations 4 are used to prevent the underwater hydrogen storage device 9 from being displaced by the influence of seawater, and thus to a certain extent, the stability of the position of the hydrogen storage device 9 is ensured.

[0058] The underwater hydrogen storage device 9 is a steel structure box body, which is internally divided into a plurality of small hydrogen storage chambers. The upper part of the underwater hydrogen storage device 9 is provided with a water pipe 52 (including a water inlet pipe and a drain pipe) and a hydrogen pipe 51 (a hydrogen inlet pipe and a hydrogen discharge pipe). By using the characteristics that hydrogen is insoluble in water and has a density smaller than that of water, the injection and discharge of hydrogen and water are carried out. The water inlet pipe, the drain pipe, the hydrogen inlet pipe and the hydrogen discharge pipe are all arranged outside the second support member 2.

[0059] Furthermore, the support members (including the first support member, the second support member and the third support member) are all made of the marine engineering DH36 material. The strengthening members (including the first strengthening member and the second strengthening member) are made of the DH36-Z35 material. Of course, in the case of higher strength, other materials with greater flexural strength can also be used to make the support members. Among them, the yield strength of the material is 355 MPa, and the tensile strength is between 490 MPa and 630 MPa. For specific parameters, reference can be made to GB712-2011.

[0060] It should be noted that the hydrogen production device 8 and the hydrogen storage device 9 are both existing technical devices. During the installation process, those skilled in the art can make routine adjustments to the hydrogen storage device according to the external seawater pressure.

[0061] The present utility model is not limited to the above optional embodiments, and anyone can obtain other various forms of products under the inspiration of the present utility model. The above specific embodiments should not be construed as limiting the protection scope of the present utility model. The protection scope of the present utility model should be defined by the claims, and the description can be used to interpret the claims.

Claims

1. A modular offshore hydrogen production and storage platform, used for hydrogen production equipment and hydrogen storage equipment, characterized in that: include: Pile foundations are provided in multiple pieces and inserted into the mud surface; A first support member is provided in a plurality of groups arranged at intervals, wherein a loading platform for carrying the hydrogen production equipment is provided on the first support member; A second supporting member, two ends of which are respectively plugged into the first supporting member and the pile foundation; as well as A third support member is provided in plurality and inserted into the pile foundation one by one. The hydrogen storage device is arranged below the loading platform and fixedly connected to the third support member; Wherein, the hydrogen storage device is located below the sea level, and the height of the first support member is at least higher than the sea level; the hydrogen production equipment is connected to the hydrogen storage device through a hydrogen pipe, and the hydrogen storage device is connected to the external environment through a water pipe.

2. The modular offshore hydrogen production and storage platform according to claim 1 is characterized in that: The lower end of the first support member is provided with a first inserting platform, the upper end of the second support member is formed as a second slot matching the first inserting platform, and the lower end is formed as a second inserting platform matching the pile foundation, so that the second support member can be inserted into the pile foundation, and the lower end of the first support member can be inserted into the second support member.

3. The modular offshore hydrogen production and storage platform according to claim 1, characterized in that: The first support members are configured in four groups and arranged in a matrix; the second support members are configured in a number matching the first support members and are arranged correspondingly to the first support members.

4. The modular offshore hydrogen production and storage platform according to claim 1, characterized in that: The modular offshore hydrogen production and storage platform also includes a first reinforcement member, which is vertically arranged and fixedly connected to an adjacent first support member along a longitudinal plane.

5. The modular offshore hydrogen production and storage platform according to claim 4, characterized in that: The first reinforcement member is in a cross shape and has two connecting ends on the same side. The two connecting ends are respectively connected to the upper and lower ends of the same first support member.

6. The modular offshore hydrogen production and storage platform according to claim 4, characterized in that: The modular offshore hydrogen production and storage platform also includes a second reinforcement member, which is horizontally arranged and fixedly connected to the first reinforcement member along a transverse plane.

7. The modular offshore hydrogen production and storage platform according to claim 6, characterized in that: The second reinforcement member is connected to the midpoint of the first reinforcement member.

8. The modular offshore hydrogen production and storage platform according to claim 1, characterized in that: The third support member is located outside the second support member; four third support members are provided and arranged in a matrix.

9. The modular offshore hydrogen production and storage platform according to claim 1, characterized in that: The hydrogen storage device is box-shaped, and an outer area of ​​the hydrogen storage device is provided with an inclined guide surface.

10. The modular offshore hydrogen production and storage platform according to claim 1, characterized in that: The hydrogen pipe and the water pipe are both welded to the second support member.

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