Wind-light-seawater direct hydrogen production comprehensive platform based on offshore wind power floating body

Abstract

The utility model discloses a wind-light-seawater direct hydrogen production comprehensive platform based on an offshore wind power floating body. The wind-light-seawater direct hydrogen production comprehensive platform comprises a floating foundation, a photovoltaic assembly, a fan unit, a hydrogen production assembly and a hydrogen storage and transportation system, two layers of decks arranged up and down are arranged at the upper part of the floating foundation; the photovoltaic module is mounted at the top of the upper deck; the hydrogen production assembly and the hydrogen storage and transportation system are mounted at the top of the lower deck; by integrating offshore wind power, photovoltaic power generation and seawater hydrogen production systems, the utilization rate of wind energy and light energy can be effectively improved, the problem that a power grid consumes wind power and photovoltaic power is solved, and a seawater in-situ direct electrolysis hydrogen production factory is constructed. Limited space and ocean resources of the floating foundation are fully utilized; the seawater hydrogen production equipment is efficiently arranged, and the oxygen storage and transportation system is arranged in the internal space of the buoy, so that the design area of a deck can be reduced, and partial ballast water is replaced to balance a floating body.

Description

Technical Field

[0001] The utility model relates to the technical fields of power generation, hydrogen production and floating foundation, and particularly relates to a comprehensive platform for direct hydrogen production from wind, light and seawater based on an offshore wind power floating body. Background Technique

[0002] Offshore wind power is a key way to utilize renewable energy in coastal areas in recent years due to its advantages such as high wind energy utilization rate, not occupying land area, and being close to the power consumption center. With the increasing scale of offshore wind power installed capacity, the lagging speed of power grid construction cannot meet the rapidly expanding demand for offshore wind power transmission, and a large number of projects are facing power rationing and "wind abandonment" situations. At the same time, due to the disadvantages of intermittency and volatility of offshore wind power, it poses challenges to the resource allocation and safe and stable operation of the power system, increasing the difficulty of grid connection.

[0003] Among the current main hydrogen production methods, electrolytic water hydrogen production is a relatively environmentally friendly and technically mature method. Therefore, the renewable energy utilization method developed based on the process of "electrolytic water hydrogen production - hydrogen storage" has gradually come into people's view, storing electrical energy in the form of chemical energy, and gradually becoming a new development direction of offshore renewable energy.

[0004] For example, the patent publication number CN115848574A "An integrated system for wave energy - wind energy power generation and hydrogen production based on a semi - submersible platform" can comprehensively utilize offshore wind energy and wave energy for power generation, and at the same time use the obtained electrical energy to produce hydrogen.

[0005] For example, the patent publication number CN113859458A "An integrated system of a floating offshore wind turbine and hydrogen production and its application" can comprehensively utilize offshore wind energy and light energy for power generation, and at the same time use the obtained electrical energy to produce hydrogen.

[0006] Although the prior art has solved the problem of the organic combination of the floating wind power system, the photovoltaic system and the hydrogen production system, there are still problems with unreasonable layout. Content of the Utility Model

[0007] The purpose of the utility model is to provide a comprehensive platform for direct hydrogen production from wind, light and seawater based on an offshore wind power floating body to solve the problems raised in the above - mentioned background technique.

[0008] To achieve the above - mentioned purpose, the utility model provides the following technical solution:

[0009] A comprehensive platform for direct hydrogen production from wind, light and seawater based on an offshore wind power floating body, including a floating foundation and a photovoltaic module, a wind turbine unit, a hydrogen production component and a hydrogen storage and transportation system installed on the floating foundation;

[0010] Two decks arranged up and down are provided on the upper part of the floating foundation;

[0011] The photovoltaic module is installed on the top of the upper deck;

[0012] The hydrogen production module and the hydrogen storage and transportation system are installed on the top of the lower deck.

[0013] Preferably, the floating foundation includes three groups of pontoons arranged in a triangle, and a heaving plate commonly connecting the lower ends of the three groups of pontoons.

[0014] Preferably, the wind turbine unit is installed on one group of pontoons, and the other two groups of pontoons are evenly filled with an energy storage system and / or a control system and / or an oxygen storage and transportation system and / or an immersion phase change mass transfer system.

[0015] Preferably, the oxygen storage and transportation system includes an oxygen buffer tank, an oxygen compressor, an oxygen manifold cabinet, and an oxygen high-pressure storage tank connected in sequence.

[0016] Preferably, an anchoring system is connected to the outer side wall of the pontoon.

[0017] Preferably, the hydrogen storage and transportation system includes a hydrogen buffer tank, a hydrogen compressor, a hydrogen manifold cabinet, and a hydrogen high-pressure storage tank connected in sequence.

[0018] Preferably, the hydrogen production module adopts a direct hydrogen production system without desalination.

[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0020] The present utility model combines offshore wind power, photovoltaic power generation, and seawater hydrogen production systems, which can effectively improve the utilization rates of wind energy and light energy, relieve the problems of grid connection and consumption of wind power and photovoltaic power, and build a seawater in-situ direct electrolysis hydrogen production plant without desalination, without additional catalysts, without seawater transportation, and without pollution treatment.

[0021] The limited space of the floating foundation and marine resources are fully utilized, and two decks arranged up and down are used for photovoltaic power generation and seawater hydrogen production respectively;

[0022] The seawater hydrogen production equipment is efficiently arranged, and the oxygen storage and transportation system is placed in the internal space of the pontoon, which can reduce the design area of the deck and replace part of the ballast water to balance the floating body. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0024] Figure 1This is a schematic structural diagram of the present utility model;

[0025] Figure 2 This is a schematic structural diagram of the present utility model after removing the upper deck;

[0026] Figure 3 This is a schematic layout diagram of the hydrogen production component and the hydrogen storage and transportation system on the lower deck of the present utility model;

[0027] Figure 4 This is a schematic process flow diagram of directly producing hydrogen from seawater without desalination of the present utility model.

[0028] In the figure, the reference numerals are represented as:

[0029] 1, floating foundation; 11, pontoon; 12, heave plate; 13, mooring system; 2, photovoltaic module; 3, wind turbine; 4, hydrogen production component; 5, hydrogen storage and transportation system; 51, hydrogen buffer tank; 52, hydrogen compressor; 53, hydrogen busbar cabinet; 54, high-pressure hydrogen storage tank. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0031] Embodiment:

[0032] A wind - light - seawater direct hydrogen production integrated platform based on an offshore wind power floating body, as shown in the attached Figures 1-4 figure, includes a floating foundation 1, a photovoltaic module 2, a wind turbine unit 3, a hydrogen production component 4, a hydrogen storage and transportation system 5, and an oxygen storage and transportation system;

[0033] The floating foundation 1 includes three groups of pontoons 11 arranged in an equilateral triangle. The lower ends of the three groups of pontoons 11 are jointly connected to a heave plate 12. An anchor system 13 is installed on the outer side wall of each group of pontoons 11 to install the pontoons 11 in a set position;

[0034] Between the upper parts of the three groups of pontoons 11, two layers of decks arranged up and down are connected. The top of the upper deck is covered with photovoltaic modules 2 to ensure maximum photovoltaic power generation.

[0035] The hydrogen production component 4 and the hydrogen storage and transportation system 5 are installed on the top of the lower deck;

[0036] The fan unit 3 is installed on one of the buoys 11. In order to achieve balance, the other two buoys 11 are usually balanced with ballast water. In order to reduce the area of ​​the deck, the energy storage system, control system, oxygen storage and transportation system, and immersed phase change mass transfer system are evenly distributed and installed inside the two buoys 11, which not only reduces the design area of ​​the deck but also replaces part of the ballast water to balance the buoys 11.

[0037] The oxygen storage and transportation system is installed inside the buoy 11 as much as possible. If the internal space of the buoy 11 is insufficient, some parts can be installed on the lower deck.

[0038] The electricity generated by the photovoltaic module 2 and the wind turbine unit 3 is stored in the energy storage system, and then the energy storage system is used to power the hydrogen production component 4 and other components. The control system is used to control each component to perform corresponding actions. In this solution, the electricity generated by the photovoltaic module 2 and the wind turbine unit 3 is not connected to the power grid. In addition to ensuring the normal operation of each component, the rest is used for hydrogen production. Therefore, the hydrogen storage and transportation system 5 and the hydrogen production component 4 required are relatively large in size, and a deck needs to be built between the three buoys 11 to have enough space to accommodate them.

[0039] The hydrogen production component 4 adopts a non-desalinating direct hydrogen production system and can directly use the surrounding seawater as a water source.

[0040] In hydrogen production by electrolysis, immersed phase change mass transfer systems are crucial. Their main function is to improve the efficiency of hydrogen and oxygen production and ensure the high efficiency of the electrolysis process. In actual sea conditions, the immersed phase change mass transfer system will produce six degrees of freedom motion posture (lateral, heading, heave, roll, pitch and yaw) as the floating foundation 1 shakes. The anti-roll device can reduce the motion response of the immersed phase change mass transfer system to ensure the stability of the hydrogen production system;

[0041] The anti-roll device is mainly composed of a controller, an actuator and multiple degrees of freedom sensors. Its working process is as follows: after the sensors (gyroscopes and accelerometers) capture the motion parameters of different degrees of freedom of the immersed phase change mass transfer system, the controller analyzes them and drives the actuators (hydraulic cylinders and hydraulic motors) to perform corresponding motion compensation on the immersed phase change mass transfer system.

[0042] The hydrogen production component 4 electrolyzes water to produce hydrogen and oxygen. The hydrogen is processed by the hydrogen storage and transportation system 5 and stored in the hydrogen high-pressure storage tank 54; the oxygen is processed by the oxygen storage and transportation system and stored in the oxygen high-pressure storage tank.

[0043] The hydrogen storage and transportation system 5 includes a hydrogen buffer tank 51, a hydrogen compressor 52, a hydrogen manifold cabinet 53 and a hydrogen high-pressure storage tank 54 which are sequentially connected from the hydrogen output end of the hydrogen production assembly 4;

[0044] Hydrogen buffer tank 51: Used to balance the fluctuations between hydrogen production and demand and provide a stable hydrogen supply.

[0045] Hydrogen compressor 52: Used to compress hydrogen to the required high pressure for storage and transportation.

[0046] Hydrogen manifold cabinet 53: Used to manage and distribute the hydrogen flow to different uses or systems.

[0047] High-pressure hydrogen storage tank 54: Used to store and transport hydrogen, usually a combination of high-pressure hydrogen cylinders.

[0048] The oxygen storage and transportation system includes an oxygen buffer tank, an oxygen compressor, an oxygen manifold cabinet, and a high-pressure oxygen storage tank connected in sequence from the oxygen output end of the hydrogen production component 4. The oxygen storage and transportation system is similar in principle to the hydrogen storage and transportation system 5 and will not be elaborated here.

[0049] For safety reasons, there are requirements for the layout space of the hydrogen production component 4, the hydrogen storage and transportation system 5, etc. For example, a distance of 9 m is reserved between the high-pressure hydrogen storage tank 54 and the hydrogen compressor 52; a distance of 3 m is reserved between the high-pressure hydrogen storage tanks 54. No control rooms, power transformation and distribution facilities, living facilities, etc. are set within a range of 9 m around the hydrogen compressor 52 and the high-pressure hydrogen storage tank 54. Therefore, a deck needs to be built to have enough space to accommodate them.

[0050] In the description of this specification, the description referring to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials, or characteristics described in connection with that embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0051] The preferred embodiments of the present utility model disclosed above are only used to help explain the present utility model. The preferred embodiments do not elaborate on all the details, nor do they limit the present utility model to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present utility model, so that those skilled in the relevant technical fields can understand and utilize the present utility model well. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A wind-solar-seawater direct hydrogen production integrated platform based on an offshore wind power floating body, comprising a floating foundation (1) and a photovoltaic module (2), a wind turbine unit (3), a hydrogen production module (4) and a hydrogen storage and transportation system (5) installed on the floating foundation (1), characterized in that: The floating foundation (1) is provided with two decks arranged up and down on the upper part; The photovoltaic module (2) is installed on the top of the deck above; The hydrogen production assembly (4) and the hydrogen storage and transportation system (5) are installed on the top of the deck below; The floating foundation (1) comprises three groups of buoys (11) arranged in a triangle, and a heave plate (12) connecting the lower ends of the three groups of buoys (11); The fan unit (3) is installed on one group of buoys (11), and the other two groups of buoys (11) evenly accommodate energy storage systems and / or control systems and / or oxygen storage and transportation systems and / or immersed phase change mass transfer systems.

2. According to claim 1, a wind-solar-seawater direct hydrogen production integrated platform based on an offshore wind power floating body is characterized by: The oxygen storage and transportation system comprises an oxygen buffer tank, an oxygen compressor, an oxygen junction cabinet and an oxygen high-pressure storage tank which are sequentially connected.

3. According to claim 1, a wind-solar-seawater direct hydrogen production integrated platform based on an offshore wind power floating body is characterized by: The outer side wall of the buoy (11) is connected to an anchoring system (13).

4. According to claim 1, a wind-solar-seawater direct hydrogen production integrated platform based on an offshore wind power floating body is characterized by: The hydrogen storage and transportation system (5) comprises a hydrogen buffer tank (51), a hydrogen compressor (52), a hydrogen junction cabinet (53) and a hydrogen high-pressure storage tank (54) which are sequentially connected.

5. The wind-solar-seawater direct hydrogen production integrated platform based on an offshore wind power floating body according to claim 1 is characterized by: The hydrogen production component (4) adopts a non-desalination direct hydrogen production system.

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