Offshore hydrogen production platform and offshore wind power hydrogen production system

Abstract

The utility model relates to the technical field of offshore wind power, and discloses an offshore hydrogen production platform and an offshore wind power hydrogen production system. The offshore hydrogen production platform comprises a floating foundation, wherein hydrogen production equipment is arranged on the floating foundation; the hydrogen storage tank is detachably mounted at the bottom of the floating foundation, and the hydrogen storage tank is suitable for being communicated with a hydrogen outlet of the hydrogen production equipment through a pipeline. The hydrogen storage tank is detachably mounted at the bottom of the floating foundation, floats on the sea, and can provide partial floating force for the floating foundation, increase the buoyancy of the floating foundation, reduce the volume or the number of floating bodies of the floating foundation and save the cost; and moreover, the storage space of the hydrogen storage tank does not need to be independently arranged, so that the cost is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of offshore wind power, and in particular to an offshore hydrogen production platform and an offshore wind power hydrogen production system. Background Art

[0002] Offshore wind power has the characteristics of rich resources, high power generation utilization hours, no land occupation and suitable for large-scale development. Compared with onshore wind power, offshore wind power has richer wind energy resources, larger wind turbine unit capacity and higher annual utilization hours, becoming the latest frontier of global wind power development.

[0003] Offshore wind power includes nearshore wind power and offshore wind power. Nearshore wind power mainly refers to wind power development in waters about 10 meters deep and close to the shore. Offshore wind power refers to wind power development in waters deeper and farther from the shore. Since wind energy resources in offshore areas are often more abundant and stable, offshore wind power has great development potential. However, due to its distance from land, the development and operation of offshore wind power faces more technical and economic challenges, including the installation and maintenance of wind turbines, the laying of cables and energy transmission.

[0004] In order to solve the problem of high cost and difficulty in power transmission of deep-sea offshore wind power, on-site hydrogen production and consumption can be adopted. However, hydrogen production and storage near wind turbines require special design of wind turbine foundations, which will also threaten the safe operation of wind turbines. In addition, the investment in the construction of fixed offshore hydrogen production stations is costly. Utility Model Content

[0005] In view of this, the utility model provides an offshore hydrogen production platform and an offshore wind power hydrogen production system to solve the problem of high consumption cost of offshore wind power hydrogen production.

[0006] In a first aspect, the utility model provides an offshore hydrogen production platform, comprising:

[0007] A floating foundation, on which the hydrogen production equipment is arranged;

[0008] A hydrogen storage tank is detachably mounted on the bottom of the floating foundation, and the hydrogen storage tank is suitable for being connected to the hydrogen outlet of the hydrogen production equipment through a pipeline.

[0009] Beneficial effects: The hydrogen storage tank can be detachably installed at the bottom of the floating foundation and float on the sea, which can provide partial buoyancy for the floating foundation, increase the buoyancy of the floating foundation, reduce the volume or number of the floating body of the floating foundation, and save costs; and because there is no need to set up a separate storage space for the hydrogen storage tank, the cost is further reduced.

[0010] In an optional embodiment, the hydrogen storage tank is flexibly connected to the bottom of the floating foundation; or,

[0011] The hydrogen storage tank is detachably mounted on the bottom of the floating foundation through a clamping structure.

[0012] The hydrogen storage tank is flexibly connected to the bottom of the floating foundation. The flexible connection can absorb and disperse the impact energy, reduce the stress concentration between components, and thus improve the stability and durability of the system. The flexible connection has low requirements for installation accuracy and is more flexible and economical during the installation process. In addition, the flexible connection can effectively isolate vibration and reduce noise. The clamping method is more convenient for disassembly and assembly, which can improve the efficiency of disassembly and assembly.

[0013] In an optional embodiment, the floating foundation comprises:

[0014] Platform entity;

[0015] A column is arranged on the bottom side of the platform body and is suitable for providing buoyancy for the platform body; the hydrogen storage tank is installed on the peripheral side of the column;

[0016] An anchor chain device is used to fix the column to the seabed.

[0017] Beneficial effects: The columns serve as floating bodies to provide support for the platform body, with a simple structure, deep draft, small vertical wave force and good heave performance.

[0018] In an optional embodiment, the plurality of hydrogen storage tanks are evenly distributed around the periphery of the column.

[0019] Beneficial effects: Multiple hydrogen storage tanks are evenly distributed on the periphery of the column, and the buoyancy provided by the hydrogen storage tanks to the floating foundation in all directions is balanced and consistent, avoiding the tilting phenomenon caused by uneven buoyancy; and multiple hydrogen storage tanks are arranged on the column to improve the hydrogen storage capacity.

[0020] In an optional embodiment, the hydrogen storage tank is installed in the middle of the column.

[0021] Beneficial effect: The hydrogen storage tank is installed in the middle of the column, and the floating foundation has better stability.

[0022] In an optional embodiment, connection structures are respectively provided at both ends of the hydrogen storage tank.

[0023] Beneficial effect: Connection structures are provided at both ends of the hydrogen storage tank, which, on the one hand, facilitates fixing the hydrogen storage tank on the floating foundation, and on the other hand, also facilitates the subsequent transportation of the hydrogen storage tank.

[0024] In an optional embodiment, an anti-collision buffer layer is provided on the hydrogen storage tank.

[0025] Beneficial effects: The setting of the anti-collision buffer layer reduces the damage caused by collisions between hydrogen storage tanks or other objects during floating on the sea or wet towing transportation, and also avoids safety hazards caused by strong collisions.

[0026] In a second aspect, the utility model also provides an offshore wind power hydrogen production system, comprising:

[0027] The offshore hydrogen production platform described in any one of the above items;

[0028] A wind power generation device, arranged on the hydrogen production platform, having an electric power output end;

[0029] A hydrogen production device, arranged on the hydrogen production platform, having a power interface and a hydrogen outlet, wherein the power interface is connected to the power output end of the wind power generation device, and the hydrogen outlet is connected to the hydrogen storage tank through a pipeline;

[0030] A transport device is suitable for transporting the hydrogen storage tank to land.

[0031] Beneficial effects: The electricity generated by offshore wind power generation devices is used to directly prepare hydrogen on site, and the on-site consumption method avoids problems such as cable laying and energy transmission of wind turbines; the prepared hydrogen is directly stored in the hydrogen storage tank installed at the bottom of the floating foundation. The hydrogen storage tank can also provide buoyancy for the floating foundation, increase the floating stability of the floating foundation, weaken the wave force, and improve the safety of the foundation; and the hydrogen storage tank installed at the bottom of the floating foundation floats directly on the sea surface, effectively utilizing the space under the floating foundation. There is no need to open up a separate storage space for the hydrogen storage tank on the floating foundation, reducing the storage cost of hydrogen.

[0032] In an optional embodiment, the hydrogen production equipment includes an electrolysis device, the wind power generation device supplies power to the electrolysis device, and electrolyzes water to produce hydrogen;

[0033] The transport device comprises a vessel.

[0034] Beneficial effects: The electricity generated by the wind power generation device is directly used to electrolyze water to produce hydrogen, which is consumed and stored on site without the need for grid-connected power generation, solving the problem of high costs for deep-sea power transmission; the hydrogen storage tanks are towed to land by ships, which is convenient and quick.

[0035] In an optional embodiment, the hydrogen storage tank has a transport state, in which a plurality of the hydrogen storage tanks are arranged end to end at the stern of the ship to form a tank chain, so that the ship can tow the tank chain at sea and transport it to land.

[0036] Beneficial effect: Multiple hydrogen storage tanks are connected end to end at the stern of the ship to form a tank chain for wet towing transportation, which improves the efficiency of hydrogen shipping and significantly reduces the cost of hydrogen shipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the related technologies, the drawings required for use in the specific implementation methods or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0038] Figure 1 This is a front cross-sectional view of an offshore hydrogen production platform according to an embodiment of the utility model;

[0039] Figure 2 A schematic diagram of a second floating foundation according to an embodiment of the utility model;

[0040] Figure 3 A schematic diagram of a third floating foundation according to an embodiment of the present utility model;

[0041] Figure 4 Schematic diagram of the status of a ship towing a hydrogen storage tank.

[0042] Description of reference numerals:

[0043] 1. Hydrogen storage equipment;

[0044] 2. Platform entity;

[0045] 3. Column;

[0046] 4. Anchor chain;

[0047] 5. Hydrogen storage tank;

[0048] 6. Ships;

[0049] 7. Rope;

[0050] 8. Semi-submersible floating body;

[0051] 9. Tension leg type buoy. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0053] In the description of the utility model, it should be noted that, unless otherwise specified, "multiple" means two or more; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0054] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0055] Combine the following Figures 1 to 4 , describing an embodiment of the utility model.

[0056] According to an embodiment of the present utility model, on the one hand, as Figure 1 As shown, an offshore hydrogen production platform is provided, comprising:

[0057] Floating foundation, the hydrogen production equipment is set on the floating foundation;

[0058] The hydrogen storage tank 5 is detachably installed at the bottom of the floating foundation, and the hydrogen storage tank 5 is suitable for being connected to the hydrogen outlet of the hydrogen production equipment through a pipeline.

[0059] The hydrogen storage tank 5 can be detachably installed at the bottom of the floating foundation and float on the sea, which can provide partial buoyancy for the floating foundation, increase the buoyancy of the floating foundation, reduce the volume or number of the floating body of the floating foundation, and save costs; and since there is no need to set up a separate storage space for the hydrogen storage tank 5, the cost is further reduced.

[0060] In some embodiments, the hydrogen storage tank 5 is detachably mounted on the bottom of the floating foundation via ropes.

[0061] The hydrogen storage tank 5 is flexibly connected to the bottom of the floating foundation. The flexible connection can absorb and disperse impact energy, reduce stress concentration between components, and thus improve the stability and durability of the system. The flexible connection has low requirements for installation accuracy and is more flexible and economical during installation. In addition, the flexible connection can effectively isolate vibration and reduce noise. Specifically, the hydrogen storage tank 5 can be tied to the bottom of the floating foundation by ropes.

[0062] In some embodiments, the hydrogen storage tank 5 is detachably mounted on the bottom of the floating foundation via a snap-fit ​​structure.

[0063] The hydrogen storage tank 5 is detachably installed through a snap-fit ​​structure, and the snap-fit ​​method is highly convenient for assembly and disassembly, and can improve the efficiency of assembly and disassembly.

[0064] In some embodiments, the floating foundation comprises:

[0065] Platform body 2;

[0066] A single column 3 is arranged on the bottom side of the platform body 2 and is suitable for providing buoyancy for the platform body 2; a hydrogen storage tank 5 is installed on the peripheral side of the column 3;

[0067] The anchor chain 4 is used to fix the column 3 to the seabed.

[0068] The single column 3 serves as a floating body to provide support for the platform body 2, has a simple structure, a deep draft of the column 3, a small vertical wave force, and a good heave performance.

[0069] In other embodiments, the floating foundation may be replaced by Figure 2 The semi-submersible floating body 8 shown or Figure 3 The tension leg type buoy 9 and the semi-submersible buoy 8 shown in the figure have good stability, reliable operation, convenient construction and installation, and are suitable for a wide range of water depths; the tension leg type buoy 9 has high stability and small dynamic response to wave forces. In actual application, the specific form of the buoy can be selected according to needs. At this time, the hydrogen storage tank 5 can be directly tied to the semi-submersible buoy 8 or the tension leg type buoy 9 by ropes.

[0070] In some embodiments, a plurality of hydrogen storage tanks 5 are evenly distributed around the periphery of the column 3 .

[0071] Multiple hydrogen storage tanks 5 are evenly distributed around the column 3. The buoyancy provided by the hydrogen storage tanks 5 to the floating foundation in all directions is balanced and consistent, avoiding the tilting phenomenon caused by uneven buoyancy. In addition, multiple hydrogen storage tanks 5 are arranged on the column 3 to improve the hydrogen storage capacity. The spacing between adjacent hydrogen storage tanks 5 can be set according to the marine environment. From the perspective of improving buoyancy and storing hydrogen storage tanks 5, the more hydrogen storage tanks 5 around the floating body, the better. However, the floating collision of hydrogen storage tanks 5 caused by wind and waves should also be considered, and the convenience of disassembly and assembly of hydrogen storage tanks 5 should also be considered.

[0072] In some embodiments, the hydrogen storage tank 5 is installed in the middle of the column 3 .

[0073] The hydrogen storage tank 5 is installed in the middle of the column 3, and the floating foundation has good stability.

[0074] In some embodiments, connection structures are respectively provided at both ends of the hydrogen storage tank 5 .

[0075] Connecting structures are provided at both ends of the hydrogen storage tank 5, which facilitates fixing the hydrogen storage tank 5 on the floating foundation, and facilitates connecting multiple hydrogen storage tanks 5 in series for transportation. The connecting structures at both ends can be designed to be the same structure, so there is no need to separate the head and tail when installing the hydrogen storage tank 5, which improves installation efficiency.

[0076] Specifically, the connection structure can be a circular ring structure welded on the storage tank body, and a rope or the like can be passed through the circular ring structure for fixing.

[0077] In some embodiments, an anti-collision buffer layer is provided on the hydrogen storage tank 5 .

[0078] The provision of the anti-collision buffer layer reduces the damage caused by collisions between the hydrogen storage tanks 5 or with other objects during floating or wet towing transportation on the sea surface, and also avoids potential safety hazards caused by strong collisions.

[0079] Specifically, the tank body can be wrapped with foam or other materials that can buffer impact force and absorb collision energy, and the materials used need to be adapted to the marine environment. The buffer layer can be sleeved on the outside of the hydrogen storage tank 5, or can be bonded on the outside of the hydrogen storage tank 5.

[0080] According to an embodiment of the present utility model, on the other hand, the present utility model also provides an offshore wind power hydrogen production system, comprising:

[0081] Offshore hydrogen production platform;

[0082] A wind power generation device, arranged on the hydrogen production platform, having an electric power output terminal;

[0083] The hydrogen production equipment is arranged on the hydrogen production platform, and has a power interface and a hydrogen outlet, the power interface is connected to the power output end of the wind power generation device, and the hydrogen outlet is connected to the hydrogen storage tank 5 through a pipeline;

[0084] The transport device is suitable for transporting the hydrogen storage tank 5 to land.

[0085] By utilizing the electric energy generated by the offshore wind power generation device, hydrogen is directly prepared on site and consumed on site, thereby avoiding the problems of cable laying and energy transmission of the wind turbine set; the prepared hydrogen is directly stored in the hydrogen storage tank 5 installed at the bottom of the floating foundation, which can also provide buoyancy for the floating foundation, increase the floating stability of the floating foundation, weaken the wave force, and improve the safety of the foundation; and the hydrogen storage tank 5 installed at the bottom of the floating foundation directly floats on the sea surface, effectively utilizing the space below the floating foundation, eliminating the need to separately open up storage space for the hydrogen storage tank 5 on the floating foundation, thereby reducing the storage cost of hydrogen.

[0086] It should be noted that a switch valve is provided in the pipeline connected to the hydrogen storage tank 5 for connecting or disconnecting the pipeline. Moreover, the pipeline is connected to the inlet of the hydrogen storage tank 5 through a quick-connect interface in the related art, which facilitates the connection between the hydrogen storage tank 5 and the hydrogen production equipment or the rapid disassembly of the hydrogen storage tank 5 and the pipeline for transporting the hydrogen storage tank 5.

[0087] In some embodiments, the hydrogen production equipment includes an electrolysis device, the wind power generation device supplies power to the electrolysis device, and electrolyzes water to produce hydrogen;

[0088] The transport device comprises a vessel 6 .

[0089] The electric energy generated by the wind power generation device is directly used to electrolyze water to produce hydrogen, which is consumed and stored on site. The off-grid wind power hydrogen production equipment does not need to be connected to the grid for power generation, thus solving the problem of high cost of deep-sea power transmission. The hydrogen storage tank 5 is towed to the land by a ship 6, which is convenient and fast.

[0090] like Figure 4 As shown, the hydrogen storage tank 5 has a transport state. In the transport state, multiple hydrogen storage tanks 5 are connected end to end at the stern of the ship 6 through ropes 7 to form a tank chain, so that the ship 6 can tow the tank chain at sea to transport it to land.

[0091] A plurality of hydrogen storage tanks 5 are arranged end to end at the stern of a ship 6 to form a tank chain for wet-towed transportation, thereby improving the efficiency of hydrogen shipping and significantly reducing the cost of hydrogen shipping.

[0092] A floating offshore hydrogen production station using a hydrogen storage tank 5 to assist buoyancy is constructed. The hydrogen storage tank 5 is placed in seawater and tied to the main body of the floating structure. This can improve the stability of the floating hydrogen production platform while storing hydrogen, reduce the amount of floating structure materials used, and reduce costs.

[0093] The hydrogen produced by the hydrogen production equipment is stored in the hydrogen storage tank 5 through a pipeline. After the hydrogen storage tank 5 is untied from the floating body, it can be towed and transported by the ship 6, eliminating the lifting link. A flexible connection is used between multiple hydrogen storage tanks 5, and the hydrogen transporting ship 6 can wet-tow multiple storage tanks at a time, which improves transportation efficiency and reduces transportation costs.

[0094] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. An offshore hydrogen production platform, characterized in that: include: A floating foundation, on which the hydrogen production equipment is arranged; A hydrogen storage tank (5) is detachably mounted on the bottom of the floating foundation, and the hydrogen storage tank (5) is suitable for being connected to the hydrogen outlet of the hydrogen production equipment through a pipeline.

2. The offshore hydrogen production platform according to claim 1, characterized in that: The hydrogen storage tank (5) is flexibly connected to the bottom of the floating foundation; or, The hydrogen storage tank (5) is detachably mounted on the bottom of the floating foundation via a clamping structure.

3. The offshore hydrogen production platform according to claim 1, characterized in that: The floating foundation comprises: Platform entity (2); A column (3) is arranged on the bottom side of the platform body (2) and is suitable for providing buoyancy for the platform body (2); the hydrogen storage tank (5) is installed on the peripheral side of the column (3); An anchor chain (4) device is used to fix the column (3) to the seabed.

4. The offshore hydrogen production platform according to claim 3, characterized in that: The plurality of hydrogen storage tanks (5) are evenly distributed around the periphery of the column (3).

5. The offshore hydrogen production platform according to claim 3, characterized in that: The hydrogen storage tank (5) is installed in the middle of the column (3).

6. The offshore hydrogen production platform according to claim 1, characterized in that: Both ends of the hydrogen storage tank (5) are respectively provided with connection structures.

7. The offshore hydrogen production platform according to any one of claims 1 to 6, characterized in that: The hydrogen storage tank (5) is provided with an anti-collision buffer layer.

8. An offshore wind power hydrogen production system, characterized in that: include: The offshore hydrogen production platform according to any one of claims 1 to 7; A wind power generation device, arranged on the hydrogen production platform, having an electric power output end; A hydrogen production device, arranged on the hydrogen production platform, having a power interface and a hydrogen outlet, wherein the power interface is connected to the power output end of the wind power generation device, and the hydrogen outlet is connected to the hydrogen storage tank (5) through a pipeline; A transport device is suitable for transporting the hydrogen storage tank (5) to land.

9. The offshore wind power hydrogen production system according to claim 8, characterized in that: The hydrogen production equipment comprises an electrolysis device, the wind power generation device supplies power to the electrolysis device and electrolyzes water to produce hydrogen; The transport device comprises a vessel (6).

10. The offshore wind power hydrogen production system according to claim 9, characterized in that: The hydrogen storage tank (5) has a transport state. In the transport state, a plurality of the hydrogen storage tanks (5) are arranged end to end at the stern of the ship (6) to form a tank chain, so that the ship (6) can tow the tank chain at sea and transport it to land.

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