Marine hydrogen and ammonia production system based on multi-energy complementation of wind, light and tide

Abstract

The invention relates to the field of new energy, in particular to an offshore hydrogen and ammonia production system based on multi-energy complementation of wind, light and tide. The system is composed of a wind power generation unit, a tidal power generation unit, a photovoltaic power generation unit, an electric energy conversion device, an air nitrogen-making device, a seawater hydrogen-making device, a hydrogen-nitrogen ammonia-making device, an automatic control device, a system structure framework and an electric pod type propeller. The system structure framework comprises a net rack, a bottom plate, side plates, a top plate, stand columns, stairs, guardrails, hatch covers and boat anchors. The bottom plate, the side plates and the top plate are combined into a hull structure, the photovoltaic power generation units are arranged on the upper portion, the guardrails are arranged on the periphery, the electric pod type propellers are installed below, and the net racks are fixed on the periphery. Power generation units are installed in the middles of the vertical chord members of the net rack, wind power generation units are arranged above the sea surface, and tidal power generation units are arranged below the sea surface. The seawater hydrogen production device generates hydrogen, the air nitrogen production device generates nitrogen, and ammonia gas is synthesized in the hydrogen-nitrogen ammonia production device by utilizing electric energy generated by the power generation unit.

Description

Technical Field

[0001] The invention relates to the field of new energy, specifically an offshore hydrogen and ammonia production system based on the complementary energy of wind, solar and tidal energy. Background Art

[0002] The authorized invention patent "A Wind Gust Power Generation System" (patent number ZL201810995090.0, authorization announcement number CN109185061B) was found to have serious technical defects in its "wind-catching rotation system" during subsequent application development. Specifically, its "base angle adjustment system" relies on the torque generated by the "tail rudder" under the action of wind to drive the "power generation unit" to rotate so that the rotating surface of the blade faces the wind direction. However, a series of engineering demonstrations in subsequent research and development have shown that its wind-catching behavior is sluggish when the wind is relatively low; when the wind is high, the complex airflow movement such as eddies and turbulence causes the "power generation unit" to rotate frequently, generating high-frequency vibrations and even resonance, which not only increases the friction between the blades and the airflow, but also increases the mechanical wear, fatigue and energy loss inside the "power generation unit". In particular, severe vibrations and resonances can also cause the connecting bolts to loosen, fatigue the grid structure, and endanger the structural safety.

[0003] The existing "wind-catching rotation system" utilizes a "chord angle adjustment system" that drives the horizontal rotation of the "generator unit" through the overall rotation of the vertical chord to achieve wind-catching. This requires the vertical chord to be able to rotate horizontally at both the ball joint and the bottom support. However, the windward grid is a cantilever structure with a high vertical height and large bending moment. This leads to inherent problems with the rotation mechanism of the ball joint and the bottom support, such as high technical difficulty, high engineering costs, and low safety performance.

[0004] In addition, the original technical solution requires a solid structural foundation and is suitable for locations such as building roofs, mountaintop valleys, and seaside beaches, but is not suitable for wind power generation at sea, especially in the deep sea.

[0005] Furthermore, the "wind gust power generation system," which utilizes a three-dimensional array of "power generation units" on a "windward grid" to form a "power wall," effectively improves wind resource utilization efficiency and is easy to transport and install. Therefore, the "wind gust power generation" model represents an innovation in traditional wind power generation technology and requires further technological innovation to enhance its scientificity, adaptability, economic efficiency, and feasibility. Summary of the invention

[0006] The purpose of this invention is to provide an offshore hydrogen and ammonia production system based on the complementary energy of wind, solar, and tidal energy, so as to achieve the above-mentioned scientificity, adaptability, economy, and feasibility. The details are as follows:

[0007] In terms of scientific nature, the present invention mainly solves the technical defects existing in the original invention "wind-catching rotation system", and uses a motor driven by automatic control to drive the worm and worm gear to adjust the direction of the power generation unit.

[0008] In terms of adaptability, the wind array power generation technology is combined with a ship to achieve offshore wind power generation; the power generation wall is extended underwater to utilize tidal and wave power generation; the cabin roof is covered with photovoltaic panels for offshore photovoltaic power generation; the electric podded propeller drive system is used for navigation, and favorable sea areas can be autonomously selected to avoid bad weather sea conditions. These measures achieve the complementary utilization of wind, light, and tidal energy, and improve the adaptability of the technical solution.

[0009] In terms of economy, the space grid structure has large spatial stiffness and is fixed to the cabin side plates, which not only strengthens the strength and stiffness of the hull and the grid, but also can use the cabin to install other equipment and store the generated energy. In particular, the grid members have small sizes, are convenient for transportation, installation, and maintenance, and do not occupy land and other land resources, so the comprehensive cost is low.

[0010] In terms of feasibility, the produced electric energy is used to electrolyze seawater to produce hydrogen, and the hydrogen is combined with nitrogen to form ammonia. Since the liquefaction conditions of ammonia are low and the transportation cost is small, the problem of energy transportation for deep-sea power generation is solved, and the feasibility of the present invention is improved.

[0011] To achieve the above object, the technical solution adopted by the present invention is: a hydrogen and ammonia production system for the sea based on the complementary use of wind, light, and tides, which is composed of a wind power generation unit 1, a tidal power generation unit 2, a photovoltaic power generation unit 3, an electric energy conversion device 4, a seawater hydrogen production device 5, an air nitrogen production device 6, a hydrogen-nitrogen ammonia production device 7, an automatic control device 8, a system structure framework 9, and an electric podded propeller 10.

[0012] The system structure framework 9 is made of corrosion-resistant materials and includes a grid 11, a bottom plate 12, side plates 13, a top plate 14, columns 15, stairs 16, guardrails 17, a hatch cover 18, and an anchor 19. Among them, the bottom plate 12, side plates 13, and top plate 14 are combined into a waterproof and floating hull structure, and the interior thereof is a cabin 20. The grid 11 is a space structure with a basic unit of a quadrangular pyramid, which is formed by vertically connecting vertical chords 21, horizontal chords 22, inclined web members 23, and joint balls 24 through grid bolts, and is vertically arranged around the hull structure and fixed to the side plates 13, with a part extending below the sea surface and another part rising above the sea surface. The plane shape of the hull structure is one of a circle and a polygon, and is connected to the grid 11 installed around to form an integral "H"-shaped cross-section space stress structure. Due to the long length of the grid, the plane size of the hull formed by the enclosure of the grid is large, thus ensuring the stability and safety of the system under the action of gravity, wind, waves, etc., and preventing sinking and capsizing.

[0013] The cabin 20 is equipped with the electric energy conversion device 4, the seawater hydrogen production device 5, the air nitrogen production device 6, the hydrogen-nitrogen ammonia production device 7, the automatic control device 8, the columns 15 supporting the top plate, and the stairs 16. The stairs 16 are connected to the bottom plate 12 and the top plate 14, and the upper part thereof is provided with the waterproof hatch 18, which is a vertical traffic facility of the cabin 20. The guardrails 17 are also provided around the top plate 14 to ensure the safety of the installation and maintenance personnel. The electric pod-type propeller 10 is installed directly below the bottom plate 12 through a suspension rotation mechanism, which can not only adjust the direction and orientation of the hull structure, but also drive the entire system to sail on the sea surface. This is the technical guarantee for autonomously finding wind farms and leaving dangerous sea conditions.

[0014] The middle part of the vertical chord 21 is equipped with a power generation unit 25 that can rotate 360 degrees horizontally. Figure 3 The power generation units 25 above the sea surface are the wind power generation units 1, which generate electricity using offshore wind power; the power generation units 25 below the sea surface are the tidal power generation units 2, which generate electricity using tides and waves. Several photovoltaic power generation units 3 are located above the top plate 14, generating electricity using solar radiation.

[0015] The electrical energy generated by the wind power generation unit 1, tidal power generation unit 2, and photovoltaic power generation unit 3 is transmitted via circuit lines 26 to the power conversion device 4 for processing, conversion, storage, and delivery to all electrical devices in the system. The purpose of energy storage is both to regulate peak loads and to ensure an uninterrupted power supply to the control system. The circuit lines 26 utilize coaxial cables, arranged within the rods of the grid 11 and electrically connected to the coaxial cable connection terminals located at the center of the grid bolts and node balls 24.

[0016] The seawater hydrogen production device 5 uses the electricity output by the power conversion device 4 to electrolyze seawater to produce hydrogen and oxygen, which are then pressurized and stored in hydrogen and oxygen storage tanks, respectively. The air nitrogen production device 6 uses the electricity output by the power conversion device 4 to pre-treat, filter, and pressurize the air, and then uses mature technologies such as molecular sieve adsorption and membrane separation to separate the air to obtain nitrogen, which is then pressurized and stored in a nitrogen storage tank. The hydrogen-nitrogen ammonia production device 7 uses the hydrogen and nitrogen to synthesize ammonia, and liquefies the ammonia and stores it in a liquid ammonia storage tank. The conditions for synthesizing hydrogen and nitrogen into ammonia include high temperature of about 500°C, high pressure of 40MPa to 60MPa, and a catalyst such as an iron catalyst. The relevant technology is currently relatively mature.

[0017] The upper end of the grid frame 11 is provided with a pressure regulating airbag 27 and a wind direction and wind speed sensor 28, and the lower end is provided with a seawater flow velocity and flow direction sensor 29. The automatic control device 8 is connected to and controls the wind power generation unit 1, the tidal power generation unit 2, the photovoltaic power generation unit 3, the power conversion device 4, the seawater hydrogen production device 5, the air nitrogen production device 6, the hydrogen-nitrogen ammonia production device 7, the electric pod propeller 10, the wind direction and wind speed sensor 28, and the seawater flow velocity and flow direction sensor 29 through a circuit pipeline 26. It is also connected to a cabin leakage sensor and a cabin temperature sensor installed on the upper surface of the bottom plate 12, an air temperature sensor, a rain sensor, a direction sensor, a position sensor, a vibration sensor, an angle sensor, a monitoring device, and a communication device installed on the upper part of the top plate 14, so as to realize automatic perception and autonomous action.

[0018] The rotation plane of the power generation unit 25 is orthogonal and centered with the vertical chord 21. Coaxially arranged from front to back in the horizontal direction are a corrosion-resistant fairing 30, blades 31, a hub 32, a front cover 33, a body 34, and a rear cover 35. The body 34 is a circular tube orthogonal four-way structure, and its upper part is provided with an upper cover 36 and its lower part is provided with a lower cover 37. Inside, it is divided into an acceleration chamber 41, a rotation chamber 42, a drive chamber 43, and an electrical chamber 44 by a front wall 38, a middle wall 39, and a rear wall 40. The blades 31 are coaxial and fixed with the hub 32, and their length is determined according to the space size defined by the horizontal chord 22 and the diagonal web member 23. The front cover 33 and the rear cover 35 are threadedly connected to the body 34 and sealed against water.

[0019] The acceleration chamber 41 is provided with a front shaft 45 coaxial with and connected to the fairing 30 and the hub 32, its shaft seal and bearings, and an internal and external gear set 46 fixed to the front shaft 45. On the outer side of the internal gear in the internal and external gear set 46, there is a deep groove bearing that cooperates with the front port part of the body 34 to enhance the stability of the front shaft 45. The shaft seal, the front shaft 45, and the front cover 33 form a wear-resistant, corrosion-resistant, and sealed rotatable structure.

[0020] In the rotary bin 42, a circular tube 47 is vertically provided in the middle, which is coaxially and thread-sealedly connected to the upper cover 36 and the lower cover 37. The inner side of the circular tube 47 cooperates with the vertical chord 21, and on the outer side, an upper shaft seal 48, an upper bearing 49, a conductive slip ring 50, a turbine 51, a lower bearing 52, and a lower shaft seal 53 are successively arranged from top to bottom and cooperate with it. At the lower part of the middle wall 39, a worm 54 meshing with the turbine 51 is provided. The circular tube 47 and the vertical chord 21 are fixed by fixing bolts 55. The conductive slip ring 50 is electrically connected to the circuit pipeline 26 through a special terminal 56. On the outer side of the middle part of the circular tube 47, a middle shaft 57 is provided, and the middle shaft 57 connects the internal and external gear sets 46 with the idler wheel 58 in the drive bin 43. The upper cover 36 and the lower cover 37 are bolted and sealed to the vertical chord 21, and also cooperate with the upper shaft seal 48, the upper bearing 49, the lower bearing 52, the lower shaft seal 53, and the upper and lower openings of the machine body 34 and the circular tube 47 to form an anti-corrosion, wear-resistant, and sealed rotatable structure.

[0021] In the drive bin 43, a sliding piece assembly 59 cooperating with the conductive slip ring 50 is arranged at the upper part of the middle wall 39. A bearing cooperating with the middle shaft 57 and a speed-changing gear set meshing with both the idler wheel 58 and the generator 60 gear are installed in the middle. The worm 54 meshing with both the turbine 51 and the drive motor 61 gear is installed at the lower part. The rear wall 40 is fixed to the middle wall 39 by bolts, and the drive motor 61 and the motor speed measurement module are installed at the lower part. A wire through-hole is provided at the upper part, and the periphery is attached to the inner wall of the machine body 34.

[0022] In the electrical bin 44, the generator 60 is installed at the center of the rear wall 40. The circuit board 62 is located behind the generator 60 and is fixed to the rear wall 40 by bolts. It integrates rectification, voltage regulation, communication, polarity protection, motor drive, analog-to-digital conversion, temperature detection, vibration detection, angle detection, accelerometer, electronic gyroscope, control chip, input and output circuits, and is electrically connected to the sliding piece assembly 59, the generator 60, the drive motor 61, and the speed measurement module through wires passing through the wire through-hole, and is electrically connected to the automatic control device 8 through the conductive slip ring 50, the special terminal 56, and the circuit pipeline 26.

[0023] Further, the automatic control device 8, the circuit board 62, the drive motor 61, the worm 54, the turbine 51, and the circular tube 47 form an automatic steering mechanism to drive the power generation unit to rotate.

[0024] Further, an airbag is also installed on the upper part of the top node ball of the grid to maintain the air pressure inside the grid members and the power generation unit. Monitoring cameras, radar sensors, human body sensors, and external wireless communication and other devices are also installed on the top plate to ensure real-time online monitoring of the entire system and inside and outside the venue.

[0025] Furthermore, the automatic control device 8 communicates with the host computer and the cloud through wireless means, can access big data of weather forecasts, actively analyze weather conditions such as air flow movement, independently search for and automatically drive into the most favorable wind fields, and analyze and drive away from sea areas with severe weather such as disastrous storms and heavy rains in advance.

[0026] Furthermore, all sealing structures can be waterproof and corrosion-resistant, preventing seawater, rainwater, and air from entering.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0028] First, the present invention uses an automatically controlled motor to drive the worm and worm gear to adjust the direction of the power generation unit, avoiding problems such as energy consumption, safety, and durability caused by frequent rotation and severe vibration of the power generation unit.

[0029] Second, the present invention combines the wind array power generation technology with a ship, enabling offshore wind power generation, tidal energy power generation, wave power generation, photovoltaic power generation, as well as offshore hydrogen production and ammonia production.

[0030] Third, offshore power generation, hydrogen production, and ammonia production do not occupy land and other terrestrial space resources, and have minimal impact on the ecological environment.

[0031] Fourth, the traditional passive wind power generation is developed into an active and intelligent wind power generation mode, which can independently analyze according to data such as weather forecasts, and enter sea areas with favorable climate and sea conditions or leave areas with severe weather and sea conditions in a planned and comparative manner in advance. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a vertical sectional view of the present invention, where the wavy line in the figure represents the sea surface;

[0033] Figure 2 is an overall elevation view of the present invention, where the wavy line in the figure represents the sea surface;

[0034] Figure 3 is a combined elevation view of the grid and the power generation unit of the present invention (excluding diagonal web members and the members in the rear row), and the dotted line in the figure is the rotation area of the power generation unit;

[0035] Figure 4 is a combined sectional view of the grid and the power generation unit of the present invention, and the dotted line in the figure is the rotation area of the power generation unit;

[0036] Figure 5 is an external view of a single power generation unit of the present invention;

[0037] Figure 6 is a vertical sectional view of a single power generation unit of the present invention;

[0038] Figure 7 This is a schematic horizontal cross-section of a single power generation unit in the present invention.

[0039] In the figure: 1 wind power generation unit, 2 tidal power generation unit, 3 photovoltaic power generation unit, 4 power conversion device, 5 seawater hydrogen production device, 6 air nitrogen production device, 7 hydrogen-nitrogen ammonia production device, 8 automatic control device, 9 system structure framework, 10 electric podded propeller, 11 grid, 12 bottom plate, 13 side plate, 14 top plate, 15 column, 16 staircase, 17 guardrail, 18 hatch cover, 19 ship anchor, 20 cabin, 21 vertical chord, 22 horizontal chord, 23 diagonal web member, 24 joint ball, 25 power generation unit, 26 power conductor, 27 pressure regulating airbag, 28 wind direction and wind speed sensor, 29 seawater flow velocity and flow direction sensor, 30 fairing, 31 blade, 32 hub, 33 front cover, 34 body, 35 rear cover, 36 upper cover, 37 lower cover, 38 front wall, 39 middle wall, 40 rear wall, 41 acceleration chamber, 42 rotary chamber, 43 drive chamber, 44 electrical chamber, 45 front axle, 46 internal and external gear set, 47 round tube, 48 upper shaft seal, 49 upper bearing, 50 conductive slip ring, 51 turbine, 52 lower bearing, 53 lower shaft seal, 54 worm, 55 fixing bolt, 56 special terminal, 57 middle axle, 58 idler wheel, 59 slide vane assembly, 60 generator, 61 drive motor, 62 circuit board. Specific embodiments

[0040] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the technical solutions in the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0041] Embodiment 1: Offshore hydrogen and ammonia production system with deep-sea wind, light and tide multi-energy complementarity

[0042] The system consists of a wind power generation unit 1, a tidal power generation unit 2, a photovoltaic power generation unit 3, an electric energy conversion device 4, a seawater hydrogen production device 5, an air nitrogen production device 6, a hydrogen-nitrogen ammonia production device 7, an automatic control device 8, a system structure framework 9, and an electric podded propeller 10. The system structure framework 9 is made of high-strength and corrosion-resistant materials, including a grid frame 11, a bottom plate 12, side plates 13, a top plate 14, columns 15, a staircase 16, guardrails 17, a hatch cover 18, and an anchor 19. The bottom plate 12, side plates 13, and top plate 14 are combined into a waterproof and floating hull structure, and the interior thereof is a cabin 20. The height of the cabin 20 is 9 meters, and the electric energy conversion device 4, the seawater hydrogen production device 5, the air nitrogen production device 6, the hydrogen-nitrogen ammonia production device 7, the automatic control device 8, the columns 15 supporting the top plate 14, and the staircase 16 leading to the top plate 14 are installed inside. A waterproof hatch cover 18 is provided at the upper part of the staircase 16, which is the entrance and exit of the cabin. The guardrails 17 are also provided around the top plate 14. The electric podded propeller 10 is installed directly below the bottom plate 12 through a suspension rotation mechanism.

[0043] The grid frame 11 is formed by connecting vertical chord members 21, horizontal chord members 22, diagonal web members 23, and joint balls 24 to each other through grid bolts. It is a space structure with a 60-degree square pyramid as the basic unit, and the side length of each unit is 3 meters. It is vertically arranged around the hull structure and fixed to the side plates 13. The height of the part extending below the sea surface is 15 meters, and the height of the part above is 30 meters. The plane of the hull structure is a square with a side length of 48 meters, and the grid frames 11 installed around it are connected to form an integral space stress structure.

[0044] A power generation unit 25 is provided in the middle of all the vertical chord members 21 of the grid frame 11, which can rotate horizontally by 360 degrees, as shown by the dotted line in Figure 3 . Above the sea surface, the power generation units 25 are wind power generation units 1, with a total of 768, which use the offshore wind power for power generation; below the sea surface and its level, the power generation units 25 are tidal power generation units 2, with a total of 960, which use tides and ocean waves for power generation. 200 photovoltaic power generation units 3 are provided on the upper part of the top plate 14, which use solar radiation for power generation. The planar dimension of each photovoltaic power generation unit is 3 meters × 3 meters. The electric energy generated by these power generation units is transmitted through circuit pipelines 26 to the electric energy conversion device 4 for processing, conversion, storage, and then transported to all the electrical equipment in the system. Maintenance-free lead-acid batteries are used to store electric energy for peak shaving and providing uninterrupted power supply required by the control system.

[0045] The seawater hydrogen production device 5 uses the electric energy output by the electric energy conversion device 4 to electrolyze seawater to generate hydrogen and oxygen, which are respectively pressurized and stored in hydrogen and oxygen storage tanks. The air nitrogen production device 6 uses the electric energy output by the electric energy conversion device 4 to pre-treat, filter and pressurize the air, and then uses a molecular sieve to adsorb and separate the air to obtain nitrogen, which is pressurized and stored in a nitrogen storage tank. The hydrogen-nitrogen ammonia production device 7 uses a complete set of mature equipment to synthesize the above-mentioned hydrogen and nitrogen into ammonia, and liquefies the ammonia and stores it in a liquid ammonia storage tank.

[0046] The upper end of the grid frame 11 is provided with a pressure regulating airbag 27 and a wind direction and wind speed sensor 28, and the lower end is provided with a seawater flow velocity and direction sensor 29. The automatic control device 8 communicates with the upper computer and the cloud in a wireless manner, and uses CAN communication to control the wind power generation unit 1, the tidal power generation unit 2, the photovoltaic power generation unit 3, the electric energy conversion device 4, the seawater hydrogen production device 5, the air nitrogen production device 6, the hydrogen-nitrogen ammonia production device 7 and the electric pod propeller 10. In addition to remotely obtaining data, the data acquisition of the automatic control device also includes the wind direction and wind speed sensor 28 installed at the highest point of the grid frame 11, the seawater flow velocity and direction sensor 29 installed at the lowest point of the grid frame 11, the cabin leakage sensor and the cabin temperature sensor on the bottom plate 12, the air temperature sensor, the rain sensor, the azimuth sensor, the position sensor, the vibration sensor, the angle sensor and the monitoring device on the upper part of the top plate 14 for local data acquisition.

[0047] The power generation unit 25 is horizontally arranged coaxially from front to back in sequence with a corrosion-resistant fairing 30, blades 31, a hub 32, a front cover 33, a body 34, and a rear cover 35. Among them, the body 34 is a circular tube orthogonal four-way structure, and its upper part is provided with an upper cover 36 and its lower part is provided with a lower cover 37. The interior is divided into an acceleration chamber 41, a rotary chamber 42, a drive chamber 43, and an electrical chamber 44 by a front wall 38, a middle wall 39, and a rear wall 40. The acceleration chamber 41 is provided with a front shaft 45 connected to the hub 32 and coaxially arranged, as well as an internal and external gear set 46, bearings, a front shaft seal, and a sealing ring connected to the front shaft 45.

[0048] A circular tube 47 is vertically arranged in the middle of the rotary chamber 42 and is coaxially and thread-sealedly connected to the upper cover 36 and the lower cover 37. The outer side of the circular tube 47 is sequentially provided with an upper shaft seal 48, an upper bearing 49, a conductive slip ring 50, a middle shaft 57, a fixing bolt 55, a turbine 51, a worm 54, a lower bearing 52, and a lower shaft seal 53 from top to bottom. Among them: the upper shaft seal 48, the upper bearing 49, the lower bearing 52, and the lower shaft seal 53 respectively cooperate with the upper and lower openings of the body 34 to form a sealing structure; the conductive slip ring 50 is fixed to the circular tube 47 and is electrically connected to the circuit pipeline 26 and the communication wire 27 through a special terminal 56; the middle shaft 57 passes through the rotary chamber 42 to connect the internal and external gear set 46 with the idler wheel 58; the fixing bolt 55 fixes the circular tube 47 and the vertical chord 21; the turbine 51 is coaxially arranged with the circular tube 47 and is fixed.

[0049] At the upper part of the middle wall 39 of the drive bin 43, a slide piece assembly 59 that cooperates with the conductive slip ring 50 is provided. At the middle part, a bearing that cooperates with the central shaft 57 and a speed change gear set that meshes with both the idler wheel 58 and the generator 60 gear are installed. At the lower part, a worm 54 that meshes with both the turbine 51 and the drive motor 61 gear is installed. The rear wall 40 is fixed to the middle wall 39 by bolts, and a drive motor 61 and a motor speed measurement module are installed at the lower part. A through hole for the main shaft of the generator 60 is provided in the middle part, a wire through hole is provided at the upper part, and the periphery is attached to the inner wall of the machine body 34.

[0050] In the center of the middle wall 39 of the electrical appliance bin 44, a generator 60 is installed. The circuit board 62 is located behind the generator 60 and is fixed to the middle wall 39 by bolts. The circuit board 62 integrates rectification, voltage regulation, communication, polarity protection, motor drive, analog-to-digital conversion, temperature detection, vibration detection, angle detection, accelerometer, electronic gyroscope, control chip circuit, power terminals, and signal terminals. Among them, the power terminals and signal terminals are electrically connected to the slide piece assembly 59 through wires passing through the wire through holes, and respectively form electrical circuits with the circuit pipeline 26 through the conductive slip ring 50 and the special terminal 56.

[0051] The front cover 33 and the rear cover 35 are threadedly connected to the machine body 34 to form a sealed structure. The upper cover 36 and the lower cover 37 are bolted to the vertical chord 21 to also form a sealed structure. A deep groove bearing that cooperates with the front port part of the machine body 34 is installed on the outer side of the inner gear of the internal and external gear set 46 to enhance the stability and rigidity of the front shaft 45. The hub 32 is fixed to the front shaft 45, the blade 31, and the fairing 30. The front shaft seal, the sealing ring, the upper shaft seal, and the lower shaft seal cooperate with the front shaft 45 to form a sealed structure. All the sealed structures can resist water and corrosion and prevent seawater, rainwater, and air from entering the machine body 34.

[0052] Pressure regulating air bags 27 are installed on the upper parts of the top nodes of the grid frame to maintain the air pressure inside the grid frame members and the power generation unit. Monitoring cameras, radar sensors, human body sensors, and external wireless communication and other devices are also installed on the top plate to ensure real-time online monitoring of the entire system and inside and outside the venue.

[0053] Embodiment 2: A smart deep-sea multi-energy complementary hydrogen and ammonia production system

[0054] Based on Embodiment 1, a smart technical solution is added. Specifically, the automatic control device 8 is connected to the weather forecast big data and the upper computer, actively analyzes weather conditions such as air flow movement, independently searches for and automatically controls the electric podded thruster 10, so that the system can drive into the most favorable wind field or drive away from the sea area with bad weather such as disastrous storms and heavy rains. The structure and construction of this embodiment are the same as those of Embodiment 1.

[0055] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A marine hydrogen and ammonia production system based on multi - energy complementation of wind, light and tides, which is composed of a wind power generation unit (1), a tidal power generation unit (2), a photovoltaic power generation unit (3), an electric energy conversion device (4), a seawater hydrogen production device (5), an air nitrogen production device (6), a hydrogen - nitrogen ammonia production device (7), an automatic control device (8), a system structure framework (9) and an electric podded propeller (10), and is characterized in that: The system structure skeleton (9) is made of corrosion-resistant materials and includes a grid (11), a bottom plate (12), a side plate (13), a top plate (14), a column (15), a staircase (16), a guardrail (17), a hatch cover (18) and an anchor (19). The bottom plate (12), the side plate (13) and the top plate (14) are combined into a waterproof and floating hull structure. The plane shape of the hull structure is one of a circle and a polygon, and is connected to the grid (11) fixed around it to form an integral spatial force structure. The interior of the hull structure is a cabin (20) and The electric energy conversion device (4), the seawater hydrogen production device (5), the air nitrogen production device (6), the hydrogen-nitrogen ammonia production device (7), the automatic control device (8), the columns (15) and the stairs (16) supporting the top plate are installed. The top plate (14) is provided with a plurality of photovoltaic power generation units (3) on the top and is also provided with the guardrails (17) around it. The electric pod-type propeller (10) is installed below the bottom plate (12) through a suspension rotation mechanism. The stairs (16) are vertical transportation facilities for the cabin (20) and are provided with the hatch cover (18) on the top. The grid (11) is a spatial structure formed by vertical chords (21), horizontal chords (22), oblique webs (23) and node balls (24) connected to each other by grid bolts, with a quadrangular pyramid as a basic unit. It is vertically arranged around the hull structure and fixed to the side plates (13), with one part of it extending below the sea surface and the other part above the sea surface. A power generation unit (25) capable of 360-degree horizontal rotation can be installed in the middle of the vertical chord (21), wherein the power generation unit (25) above the sea surface is the wind power generation unit (1), and the power generation unit (25) below the sea surface is the tidal power generation unit (2). The electric energy generated by the wind power generation unit (1), tidal power generation unit (2) and photovoltaic power generation unit (3) is transmitted to the electric energy conversion device (4) through the circuit pipeline (26) for processing, storage, and transmission to all electrical equipment in the system. The seawater hydrogen production device (5) electrolyzes seawater to obtain hydrogen and oxygen, and pressurizes and stores them in hydrogen storage tanks and oxygen storage tanks respectively. The air nitrogen production device (6) separates air to obtain nitrogen, and pressurizes and stores it in a nitrogen storage tank. The hydrogen-nitrogen ammonia production device (7) uses the hydrogen and nitrogen to synthesize ammonia, and liquefies the ammonia and stores it in a liquid ammonia storage tank.

2. The offshore hydrogen and ammonia production system based on multi-energy complementation of wind, light and tides according to claim 1, characterized in that: The upper end of the grid frame (11) is provided with a pressure regulating airbag (27) and a wind direction and wind speed sensor (28), and the lower end is provided with a seawater flow velocity and direction sensor (29). The automatic control device (8) adopts a wireless communication method and is connected to and controls the wind power generation unit (1), the tidal power generation unit (2), the photovoltaic power generation unit (3), the power conversion device (4), the seawater hydrogen production device (5), the air nitrogen production device (6), the hydrogen-nitrogen ammonia production device (7), the electric podded propeller (10), the wind direction and wind speed sensor (28), and the seawater flow velocity and direction sensor (29) through the circuit pipeline (26). It is also connected to an indoor environment sensor and a water leakage sensor installed in the cabin (20), an air temperature sensor, a rain sensor, an azimuth sensor, a position sensor, a vibration sensor, an angle sensor, a monitoring device, and a communication device installed on the upper part of the top plate (14).

3. The offshore hydrogen and ammonia production system based on multi - energy complementation of wind, light and tides according to claim 1, characterized in that: The power generation unit (25) is horizontally provided with a corrosion-resistant fairing (30), blades (31), a hub (32), a front cover (33), a body (34), and a rear cover (35) coaxially from front to back. The body (34) is a circular tube orthogonal four-way structure, and its upper and lower parts are respectively provided with a corrosion-resistant upper cover (36) and a lower cover (37). The interior is divided into an acceleration chamber (41), a rotary chamber (42), a drive chamber (43), and an electrical chamber (44) by a front wall (38), a middle wall (39), and a rear wall (40). The acceleration chamber (41) is provided with a front shaft (45) connected to the fairing (30) and the hub (32) coaxially and its shaft seal and bearing, and an internal and external gear set (46) fixed to the front shaft (45). A deep groove bearing is provided on the outer side of the internal gear in the internal and external gear set (46). The shaft seal and the front shaft (45) and the front cover (33) form a rotatable structure that is wear-resistant, corrosion-resistant, and sealed. A circular tube (47) coaxially and thread-sealed with the upper cover (36) and the lower cover (37) is vertically provided in the middle of the rotary chamber (42). The inner side of the circular tube (47) cooperates with the vertical chord (21), and the outer side is successively provided with an upper shaft seal (48), an upper bearing (49), a conductive slip ring (50), a turbine (51), a lower bearing (F52), and a lower shaft seal (53) concentrically and connected from top to bottom. A worm (54) meshing with the turbine (51) is provided at the lower part of the middle wall (39). The circular tube (47) and the vertical chord (21) are fixed by fixing bolts (55). The conductive slip ring (50) is electrically connected to the circuit pipeline (26) through a special terminal (56). A middle shaft (57) is provided on the outer side of the middle of the circular tube (47) and connects the internal and external gear set (46) to the idler wheel (58) in the drive chamber (43). In the driving chamber (43), a sliding piece assembly (59) cooperating with the conductive slip ring (50) is arranged at the upper part of the middle wall (39), and a speed change gear set meshing with both the transition wheel (58) and the generator (60) gear is installed in the middle; the rear wall (40) is fixed to the middle wall (39) by bolts, and a driving motor (61) cooperating with the worm (54) and its speed measuring module are installed at the lower part, a wire through hole is provided at the upper part, and the periphery is attached to the inner wall of the machine body (34); In the electrical appliance chamber (44), the generator (60) is installed at the center of the rear wall (40), the circuit board (62) is located behind the generator (60) and is fixed to the rear wall (40) by bolts. The circuit board (62) integrates rectification, voltage regulation, communication, polarity protection, motor drive, temperature detection, vibration detection, angle detection, accelerometer, electronic gyroscope, control chip, input, and output circuits, and is electrically connected to the sliding piece assembly (59), generator (60), driving motor (61), and speed measuring module through wires passing through the wire through hole, and is electrically connected to the automatic control device (8) through the conductive slip ring (50), special terminal (56), and circuit pipeline (26); the circuit pipeline (26) adopts a coaxial cable, is arranged inside the members of the grid frame (11), and is electrically connected to the coaxial cable connection terminal arranged at the center of the grid frame bolt and the joint ball (24); The blade (31) is coaxial with and fixed to the hub (32), and its length is determined according to the space size defined by the horizontal chord (22) and the diagonal web member (23); the front cover (33) and the rear cover (35) are threadedly connected to the machine body (34) and are sealed and waterproof; the upper cover (36) and the lower cover (37) are bolted to the vertical chord (21) and are sealed, and also cooperate with the upper shaft seal (48), upper bearing (49), lower bearing (52), lower shaft seal (53), and the upper and lower openings of the machine body (34) and the round tube (47) to form an anti-corrosion, wear-resistant, and sealed rotatable structure.

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