Offshore wind power generation hydrogen production system

Abstract

The utility model discloses an offshore wind power generation hydrogen production system which comprises a floating tower structure arranged on the sea surface, and the floating tower structure comprises a first floating tower, a second floating tower and a third floating tower which are connected with one another; a wind driven generator is arranged on the first floating tower, and a power distribution device is arranged in a tower drum of the wind driven generator; a seawater desalination cabin is arranged on the second floating tower, and a water taking pump and a seawater desalination and desalination device are arranged in the seawater desalination cabin; a hydrogen production cabin is arranged on the third floating tower, and a water electrolysis hydrogen production device and a hydrogen purification device are arranged in the hydrogen production cabin; the wind driven generator is connected with the power distribution device, and the power distribution device is respectively connected with the water taking pump, the seawater desalination and desalination device, the water electrolysis hydrogen production device and the hydrogen purification device; the water taking pump, the seawater desalination and desalination device, the water electrolysis hydrogen production device and the hydrogen purification device are connected in sequence. According to the scheme, the arrangement mode is simple, the space utilization rate is high, the overall structure is stable, the expandability of the system can be improved, and system configuration can be changed according to actual requirements.

Description

Technical Field

[0001] The utility model belongs to the technical field of renewable energy hydrogen production, and particularly relates to an offshore wind power hydrogen production system. Background Technique

[0002] The offshore wind power hydrogen production technology is a new clean energy production method that combines offshore wind power generation and water electrolysis hydrogen production technology. It uses the electric energy generated by offshore wind power generation to decompose the treated seawater into hydrogen and oxygen through the water electrolysis process, thereby realizing hydrogen production using renewable energy. Compared with onshore wind power generation, offshore wind resources are more abundant and stable because the offshore wind speed is higher and the wind resources are more concentrated, making the offshore wind power generation more efficient. The generated hydrogen can be compressed and transported to the demand area through a hydrogen pipeline. As an efficient energy carrier, hydrogen can achieve large-scale energy storage and long-distance transportation. It can store energy when the wind power generation is excessive and release it during the peak demand period, thus balancing the energy supply and demand. With the continuous progress of wind power generation technology and water electrolysis hydrogen production technology, the cost of hydrogen production using renewable energy is expected to gradually decrease. Governments and enterprises around the world are also increasing their investment and research and development efforts in this field, and it is expected that this technology will play an important role in the global energy transformation in the future. Therefore, a new offshore structure scheme is needed to further reduce the construction cost and improve the flexibility and application scope on the basis of the conventional basic structure. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is: to provide an offshore wind power hydrogen production system, which solves the problems of poor structural flexibility and scalability of the existing scheme, realizes construction in a modular manner, and has high space utilization rate and stable overall structure.

[0004] According to the technical scheme of the utility model, the utility model provides an offshore wind power hydrogen production system, which includes a floating tower structure arranged on the sea surface. The floating tower structure includes a first floating tower, a second floating tower and a third floating tower which are connected to each other; a wind turbine is arranged on the first floating tower, and a power distribution device is arranged in the tower barrel of the wind turbine; a seawater desalination cabin is arranged on the second floating tower, and a water intake pump and a seawater desalination and desalination device are arranged in the seawater desalination cabin; a hydrogen production cabin is arranged on the third floating tower, and a water electrolysis hydrogen production device and a hydrogen purification device are arranged in the hydrogen production cabin; the output side of the wind turbine is connected to the input side of the power distribution device through a cable, and the output side of the power distribution device is connected to the water intake pump, the seawater desalination and desalination device, the water electrolysis hydrogen production device and the hydrogen purification device respectively through a cable; the water intake pump, the seawater desalination and desalination device, the water electrolysis hydrogen production device and the hydrogen purification device are connected in sequence through pipelines, the input side of the water intake pump extends below the sea surface through a pipeline, and the output side of the hydrogen purification device is connected with a conveying pipe.

[0005] Furthermore, the first floating tower, the second floating tower, and the third floating tower are triangularly distributed, and adjacent floating towers are connected by a bridge.

[0006] Furthermore, the pipelines between the water intake pump, the seawater desalination and desalination device, the water electrolysis hydrogen production device, and the hydrogen purification device are arranged along the bridge.

[0007] Furthermore, the cables are arranged along the bridge.

[0008] Furthermore, the delivery pipe is connected to the hydrogen storage facility and / or the hydrogen supply network.

[0009] Furthermore, the floating tower structure is connected to the seabed through gravity anchors, suction anchors, and / or screw anchors.

[0010] Furthermore, the floating tower structure further includes more floating towers to arrange multiple wind turbines, multiple seawater desalination compartments, and / or multiple hydrogen production compartments.

[0011] Furthermore, the floating tower structure forms a network structure, or forms multiple distributed and independent parallel unit structures.

[0012] Compared with the prior art, the beneficial technical effects of the present utility model are as follows:

[0013] In the offshore wind power hydrogen production system of the present utility model, each functional component (group) is respectively arranged on a floating tower, and multiple floating towers are connected to form a floating tower structure that can stably float on the sea surface. The structural strength of geometric shapes such as triangles is fully utilized, the layout method is simpler, and in addition to the expected maintenance, the system is equivalent to an independent unit and is modular. Therefore, this unit can be combined with one or more other identical or different units to increase the scalability of the system, and the system configuration can be changed according to actual needs; taking a 10MW wind turbine and a 5MW water electrolysis hydrogen production device as an example, a hydrogen production output of 1000 Nm 3 / h can be achieved. Description of the Drawings

[0014] Figure 1 is a schematic three-dimensional structure diagram of the system provided by the present utility model.

[0015] Figure 2 is a structural block diagram of the system provided by the present utility model.

[0016] Description of the reference numerals in the drawings:

[0017] 1. Floating tower structure; 2. Wind turbine; 3. Power distribution device; 4. Seawater desalination compartment; 5. Water intake pump; 6. Seawater desalination and desalination device; 7. Hydrogen production compartment; 8. Water electrolysis hydrogen production device; 9. Hydrogen purification device; 10. Delivery pipe; 11. Bridge. Detailed Embodiments

[0018] The utility model provides an offshore wind power generation hydrogen production system, which solves the problems of low structural flexibility and scalability of existing solutions, and realizes modular construction, high space utilization and stable overall structure. As a type of energy storage, this solution can balance energy supply and demand when there is excess wind power generation, or serve as a production method to solve users' hydrogen needs.

[0019] See also Figure 1 , Figure 2 The utility model provides an offshore wind power generation and hydrogen production system, including a floating tower structure 1 arranged on the sea surface, wherein the floating tower structure 1 has a plurality of floating towers, including at least a first floating tower, a second floating tower and a third floating tower connected to each other. Specifically, the first floating tower, the second floating tower and the third floating tower are preferably distributed in a triangle (more preferably a right triangle or an acute triangle) and the adjacent floating towers are connected by a bridge 11 such as a steel structure. The floating tower structure 1 is connected to the rock mass on the seabed, for example, by a gravity anchor, a suction anchor and / or a spiral anchor. Thereby, the floating tower structure 1 can be stably and fixedly floated on the sea surface to form the structural foundation of the system.

[0020] The first floating tower is provided with a wind turbine 2, specifically, a tower extending upward is provided on the first floating tower, the upper end of the tower is provided with the main body of the wind turbine 2, and a power distribution device 3 is provided in the tower of the wind turbine 2. The wind turbine with the power distribution device is responsible for providing power to the main electrical equipment, and its installation capacity can adopt a nominal output power of 5MW, 10MW and 15MW according to system requirements.

[0021] The second floating tower is provided with a desalination tank 4, in which a water intake pump 5 and a desalination and desalination device 6 are provided. The water intake pump, the desalination and desalination device are used to provide the water source required for water electrolysis, and the desalination and desalination device can adopt technologies such as reverse osmosis and EDI desalination.

[0022] The third floating tower is provided with a hydrogen production cabin 7, in which a water electrolysis hydrogen production device 8 and a hydrogen purification device 9 are provided. The water electrolysis hydrogen production device produces hydrogen and oxygen through a water electrolysis process, and the hydrogen production device is, for example, a proton exchange membrane electrolyzer with a power of 1MW to 5MW, and the hydrogen purification device is responsible for further hydrogen processing and transporting it through a transport pipe.

[0023] The power output side of the wind turbine 2 is connected to the power input side of the power distribution device 3 through a cable, and the power output side of the power distribution device 3 is connected to the power input sides of the water intake pump 5, the seawater desalination and desalination device 6, the water electrolysis hydrogen production device 8, and the hydrogen purification device 9 through cables, respectively, so as to realize the acquisition, distribution and transmission of wind power.

[0024] The water intake pump 5, seawater desalination and desalination device 6, water electrolysis hydrogen production device 8, and hydrogen purification device 9 are connected in sequence through pipelines to transport liquids or gases. The input side of the water intake pump 5 extends below the sea surface through a pipeline, so as to be able to suck seawater as raw material. The output side of the hydrogen purification device 9 is connected with a delivery pipe 10 to output the produced hydrogen to the place of demand.

[0025] The working process of this solution is as follows. The wind turbine generates electric energy in windy conditions and provides electric energy for each electrical equipment. The water intake pump extracts seawater and, after being processed by the seawater desalination system, provides electrolytic water for the water electrolysis hydrogen production device. The water electrolysis hydrogen production device generates hydrogen and oxygen through the water electrolysis process. After the hydrogen produced by the electrolysis device is purified by the hydrogen purification device, it is sent out through the delivery pipe. The delivery pipe 10 is connected to the collection pipeline for the hydrogen supply network, such as hydrogen storage facilities at sea or on land, and / or the onshore hydrogen supply network (such as the natural gas supply network).

[0026] In a preferred embodiment, the pipelines between the water intake pump 5, seawater desalination and desalination device 6, water electrolysis hydrogen production device 8, and hydrogen purification device 9 are arranged along the bridge 11, for example, parallelly arranged beside or below the bridge 11, making the arrangement of the pipeline structure more concise, neat, intuitive, and enabling the structure to be stable relying on the bridge 11, or jointly realizing the fixed connection between floating towers with the bridge 11. Similarly, the cables are preferably arranged along the bridge 11 (arranged on the bridge 11), making the cable layout regular and protecting the cables.

[0027] Optionally, the floating tower structure 1 further includes more floating towers to set up multiple wind turbines 2, multiple seawater desalination compartments 4, and / or multiple hydrogen production compartments 7, so as to be flexibly expanded and adjusted according to actual needs. In a sea area, the floating tower structure 1 forms a mesh structure through the bridge 11 (for example, a network structure connected in a triangular relationship, with each network node being a floating tower), or forms multiple distributed and independent parallel unit structures (where a single unit structure is Figure 1 composed of the three floating towers shown, or a mesh structure composed of more floating towers).

[0028] In summary, in the offshore wind power hydrogen production system of the present utility model, each functional component (group) is respectively arranged on a floating tower, and multiple floating towers are connected to form a floating tower structure that can stably float on the sea surface, making full use of the structural strength of geometric shapes such as triangles, with a simpler layout method. And except for expected maintenance, the system is equivalent to an independent unit and is modular. Therefore, this unit can be combined with one or more other identical or different units to increase the scalability of the system, and the system configuration can be changed according to actual needs; taking a 10MW wind turbine and a 5MW capacity water electrolysis hydrogen production device as an example, it can reach 1000 Nm3 Hydrogen production output of / h.

Claims

1. An offshore wind power hydrogen production system, characterized in that, It includes a floating tower structure (1) arranged on the sea surface. The floating tower structure (1) includes a connected first floating tower, second floating tower and third floating tower; a wind turbine (2) is arranged on the first floating tower, and a power distribution device (3) is arranged in the tower barrel of the wind turbine (2); a seawater desalination chamber (4) is arranged on the second floating tower, and a water intake pump (5) and a seawater desalination and desalination device (6) are arranged in the seawater desalination chamber (4); a hydrogen production chamber (7) is arranged on the third floating tower, and a water electrolysis hydrogen production device (8) and a hydrogen purification device (9) are arranged in the hydrogen production chamber (7). The output side of the wind turbine (2) is connected to the input side of the power distribution device (3) through a cable, and the output side of the power distribution device (3) is respectively connected to the water intake pump (5), the seawater desalination and desalination device (6), the water electrolysis hydrogen production device (8), and the hydrogen purification device (9) through a cable. The water intake pump (5), the seawater desalination and desalination device (6), the water electrolysis hydrogen production device (8), and the hydrogen purification device (9) are sequentially connected through pipelines. The input side of the water intake pump (5) extends below the sea surface through a pipeline, and the output side of the hydrogen purification device (9) is connected with a delivery pipe (10).

2. The offshore wind power hydrogen production system according to claim 1, wherein, The first floating tower, the second floating tower, and the third floating tower are distributed in a triangle and adjacent floating towers are connected by a bridge (11).

3. The offshore wind power hydrogen production system according to claim 1, characterized in that, The pipelines between the water intake pump (5), the seawater desalination and desalination device (6), the water electrolysis hydrogen production device (8), and the hydrogen purification device (9) are arranged along the bridge (11).

4. The offshore wind power hydrogen production system according to claim 2, wherein, The cables are arranged along the bridge (11).

5. The offshore wind power hydrogen production system according to any one of claims 1-4, characterized in that, The delivery pipe (10) is connected to a hydrogen storage facility and / or a hydrogen supply network.

6. The offshore wind power hydrogen production system according to any one of claims 1-4, characterized in that, The floating tower structure (1) is connected to the seabed through a gravity anchor, a suction anchor and / or a screw anchor.

7. The offshore wind power hydrogen production system according to any one of claims 1-4, characterized in that, The floating tower structure (1) further includes more floating towers to arrange multiple wind turbines (2), multiple seawater desalination chambers (4) and / or multiple hydrogen production chambers (7).

8. The offshore wind power hydrogen production system according to claim 7, characterized in that, The floating tower structure (1) forms a network structure, or forms multiple distributed and independent parallel unit structures.

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