A floating integrated energy island energy consumption system

Abstract

This utility model discloses an energy consumption system for a floating integrated energy island at sea, including a truss-type floating platform and wind power generation module, hydrogen production module, wave energy compressed air module, and wind air compressor module installed on the truss-type floating platform. The interior of the truss-type floating platform forms a hollow, sealed space that serves as a low-pressure compressed air storage tank. The floating body of the wave energy compressed air module is equipped with a moving cylinder. The moving cylinder of the wave energy compressed air module and the wind air compressor module are both connected to the hollow, sealed space of the truss-type floating platform. This utility model reduces the energy consumption of auxiliary systems by designing the interior of the truss-type floating platform as a storage tank structure to store compressed air generated by the wind air compressor and wave energy. At the same time, it is equipped with various green energy production, transmission, and consumption equipment to realize the on-site consumption and conversion of green energy on deep-sea islands.

Description

Technical Field

[0001] This utility model relates to the technical field of offshore energy islands, and in particular to an energy consumption system for a floating integrated energy island at sea. Background Technology

[0002] For the development of offshore green energy, currently only nearshore fixed-foundation offshore wind power has the capacity for large-scale development, while deep-sea offshore wind power lacks the technological reserves for large-scale development. As for other marine energy sources, they are in the small-scale prototype development stage, and their current production capacity is far from comparable to that of offshore wind power. In areas more than 50km offshore and with a water depth of more than 80m, laying submarine cables from the land to islands is extremely difficult and costly. Therefore, it is necessary to consider using deep-sea green energy to power the island grid or to adopt off-grid local consumption and conversion of deep-sea green energy.

[0003] For example, Chinese utility model patent CN220585993U discloses an integrated energy base based on an offshore energy island. This base achieves the synergy, integration, and complementarity of multiple energy sources such as wind, solar, and wave power. The electricity generated by this multi-energy complementary mode supplies power to various industries on the offshore energy island, including ammonia production-related systems. However, this approach requires all ammonia production-related systems, such as compressed air systems, seawater desalination systems, and wave power generation, to consume electricity. This results in high equipment energy consumption, reduced final energy consumption for end-use, and relatively low overall energy system conversion efficiency. Therefore, it is necessary to reduce the energy consumption of auxiliary systems such as compressed air systems, seawater desalination systems, and wave power systems to improve the overall energy system conversion efficiency. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by providing an energy consumption system for a floating integrated energy island at sea. By designing the interior of the truss-type floating platform as a storage tank structure, it stores compressed air generated by wind power air compressors and wave energy, reducing the energy consumption of auxiliary systems such as compressed air systems, seawater desalination systems, and wave energy systems. At the same time, it is equipped with a variety of green energy production, transmission, and consumption equipment to realize the function of on-site consumption and conversion of green energy on deep-sea islands.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows: an energy consumption system for a floating integrated energy island at sea, comprising a truss-type floating platform and wind power generation module, hydrogen production module, wave energy compressed air module, wind power air compressor module, and waste heat seawater desalination module installed on the truss-type floating platform; wherein, the interior of the truss-type floating platform forms a hollow, sealed space serving as a low-pressure compressed air storage tank; the wave energy compressed air module has a moving cylinder within its buoyancy; the wind power air compressor module is connected to a small stall fan, and the wave... The compressed air module's cylinder and the wind-powered air compressor module are both connected to the hollow, sealed space of the truss-type floating platform to store the compressed air generated by the wave energy compressed air module and the wind-powered air compressor module. The wind-powered air compressor module is sequentially connected to a pneumatic motor and a synchronous generator for auxiliary power supply. The waste heat seawater desalination module has a built-in biological evaporator for evaporating seawater and is connected to the hydrogen production module. The hydrogen production module is connected to the wind power generation module and the hollow, sealed space, and the wind power generation module is connected to the wind-powered air compressor module.

[0006] Furthermore, the system includes an air separation nitrogen generation module and a green ammonia synthesis module; both the air separation nitrogen generation module and the green ammonia synthesis module are installed on a truss-type floating platform, and the hollow sealed space of the truss-type floating platform is connected to the green ammonia synthesis module through the air separation nitrogen generation module, and the hydrogen generation module is connected to the green ammonia synthesis module.

[0007] Furthermore, the system includes a photovoltaic module, a power transmission and transformation module, a power storage module, and a smart microgrid system. The photovoltaic module, power transmission and transformation module, and power storage module are all installed on a truss-type floating platform. The smart microgrid system is connected to a wind power generation module, a hydrogen production module, a wave energy compressor module, a wind power air compressor module, a waste heat seawater desalination module, an air separation nitrogen production module, a green ammonia synthesis module, the photovoltaic module, the power transmission and transformation module, and the power storage module. The smart microgrid system is connected to the power grid system through the power transmission and transformation module.

[0008] Furthermore, the tower of the wind-powered air compressor module has a hollow space inside that serves as an air storage tank.

[0009] Furthermore, the wind power generation module is a wind turbine generator set.

[0010] Furthermore, the truss-type floating platform is a hollow steel truss-type floating platform.

[0011] Furthermore, the hydrogen production module is sequentially connected to a hydrogen booster and a high-pressure hydrogen storage tank, and the high-pressure hydrogen storage tank is connected to the green ammonia synthesis module.

[0012] Furthermore, the system includes a marine fishery module, which is connected to a photovoltaic module, a synchronous generator, and a power storage module.

[0013] Furthermore, the marine fishery module is an aquaculture cage.

[0014] Compared with the prior art, this utility model has the following advantages and beneficial effects: 1. This utility model adopts a truss-type floating platform. The interior of the truss is designed as a storage tank structure to store the compressed air generated by the wind power air compressor module and the wave energy air compressor module. It can have a large energy storage capacity without the need to build an additional storage tank, which improves the economy and energy supply sustainability of compressed air energy storage.

[0015] 2. The wave energy compressed air module of this utility model generates compressed air through a moving cylinder. The compressed air is directly stored in the internal space of the truss for nitrogen production. Currently, wave energy is mainly used for power generation. That is, after the generated wave energy is converted into air kinetic energy, it still needs to be converted into electrical energy by a power generation device. At present, the volume power density of wave energy is already low. After multiple conversions, the power generation efficiency is even lower. Therefore, direct conversion into compressed air is more efficient than multiple conversions into electrical energy.

[0016] 3. The wind-powered air compressor module of this utility model directly converts wind energy into compressed air potential energy, and can provide an auxiliary power source for downstream hydrogen production, nitrogen production and ammonia production without the need for electrical equipment in the middle. In addition, the compressed air generated by the wind-powered air compressor module can also drive a synchronous generator to supply power to the entire energy island. At present, the compressed air required by the offshore energy island is produced by electric air compressors, which consumes electricity.

[0017] 4. This utility model's waste heat seawater desalination module utilizes the waste heat from the hydrogen production module, employing a high-efficiency biological evaporator to evaporate seawater. The resulting freshwater is then used by the hydrogen production module to produce ultrapure water for the production of green hydrogen and green ammonia. Compared to current offshore hydrogen production methods that directly use electric seawater desalination equipment to produce ultrapure water, waste heat seawater desalination can recover and utilize the waste heat from water electrolysis for hydrogen production, eliminating the need for an additional cooling system for the hydrogen production module. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a structural schematic diagram of a truss-type floating platform.

[0020] Figure 3 This is a schematic diagram of a wave energy compression module.

[0021] Figure 4 This is a structural schematic diagram of a wind-powered air compressor module.

[0022] Figure 5 This is a schematic diagram of a wind-powered air compressor module.

[0023] Figure 6 This is a schematic diagram of a waste heat seawater desalination module.

[0024] Figure 7 This is a schematic diagram of the connection structure between the waste heat seawater desalination module and the hydrogen production module. Detailed Implementation

[0025] The present invention will be further described below with reference to specific embodiments.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] See Figure 1 As shown, the offshore floating integrated energy island energy consumption system provided in this embodiment includes a truss-type floating platform 1 and wind power generation module 201, hydrogen production module 202, wave energy compressor module 203, power storage module 208, photovoltaic module 209, power transmission and transformation module 210, wind air compressor module 204, waste heat seawater desalination module 205, air separation nitrogen production module 206, green ammonia synthesis module 207, and intelligent microgrid system 2 installed on the truss-type floating platform 1.

[0028] The wind power generation module 201 is connected to the hydrogen production module 202. The wind power generation module 201 is a wind turbine generator set. The wind power generation module 201 is also connected to the wind turbine air compressor module 204. The hydrogen production module 202 is connected to the green ammonia synthesis module 207. See also... Figure 2 As shown, the truss-type floating platform 1 is a hollow steel truss-type floating platform 1, and the interior of the truss-type floating platform 1 forms a hollow, sealed space 101 that serves as a low-pressure 1MPa compressed air storage tank. See also Figure 3 As shown, the wave energy compressed air module 203 has a float equipped with three-stage motion cylinders: a primary cylinder, a secondary cylinder, and a tertiary cylinder. These three-stage cylinders compress air and input the compressed air into the hollow, sealed space 101 of the air storage tank, thus achieving gas compression using wave energy to increase the amount of compressed air. (See also...) Figures 4 to 5As shown, the wind power air compressor module 204 is connected to a small stall fan 2043, which directly couples to the compressed air output of the air compressor; and the wind power air compressor module 204 is connected in sequence to a pneumatic motor 212 and a synchronous generator 213, which can drive the pneumatic motor through compressed air to generate electricity for the synchronous generator, providing auxiliary power to the energy island system; the tower 2041 of the wind power air compressor module 204 has a hollow space 2042 inside, which serves as an air storage tank. The motion cylinder of the wave energy compressor module 203 and the wind power air compressor module 204 are both connected to the hollow sealed space of the truss floating platform 1. The hollow sealed space serves as a low-pressure compressed air storage tank to store the compressed air delivered by the wave energy compressor module 203 and the wind power air compressor module 204. The hollow sealed space 101 is then connected to the green ammonia synthesis module 207 through the air separation nitrogen generation module 206, i.e., the booster compressor 216, to deliver pressurized nitrogen into the green ammonia synthesis module 207. At the same time, the hollow sealed space 101 is also connected to the hydrogen generation module 202.

[0029] The hydrogen production module 202 employs water electrolysis technology to produce hydrogen. It is sequentially connected to a hydrogen booster 214 and a high-pressure hydrogen storage tank 215, used to fully utilize the energy from the wind power generation module 201. The hydrogen produced by the hydrogen production module 202 is pressurized by the hydrogen booster and then stored in the high-pressure hydrogen storage tank. The high-pressure hydrogen storage tank is connected to the green ammonia synthesis module 207. The high-pressure hydrogen then enters the green ammonia synthesis reactor, where it is 100% converted into green ammonia. (See also...) Figures 6 to 7 As shown, the waste heat seawater desalination module 205 has a built-in bio-evaporator b for seawater evaporation and a condenser c. The bio-evaporator b has a built-in fan b1, demister b2, spray system b3, and packing material b4. The condenser c is connected to the hydrogen production module 202 and is used to supply condensate to the hydrogen production module 202. The waste heat generated is transported to the packing material b4. The cooling water output from the hydrogen production module 202 is evaporated by the fan b1, demister b2, spray system b3, and packing material b4, and finally outputs concentrated brine and fresh water respectively. The fresh water obtained after the bio-evaporator evaporates seawater is then used to produce ultrapure water through membrane technology and EDI. The ultrapure water is used for the production of green hydrogen and green ammonia.

[0030] The intelligent microgrid system 2 is connected to the wind power generation module 201, hydrogen production module 202, wave energy compressor module 203, power storage module 208, photovoltaic module 209, power transmission and transformation module 210, wind power air compressor module 204, waste heat seawater desalination module 205, air separation nitrogen production module 206, and green ammonia synthesis module 207, respectively. It is used to control the operation and energy supply of the entire floating integrated energy island energy consumption system. This is achieved by connecting the wind power generation module 201, photovoltaic module 209, and wind power air compressor module 207. The electrical energy generated by the synchronous generator 213 connected to 04 is input into the power storage module 208, which then provides auxiliary power to the wind power generation module 201, the hydrogen production module 202, and the green ammonia synthesis module 207. At the same time, the intelligent microgrid system 2 is connected to the power grid system a through the power transmission and transformation module 210, realizing the combined power supply of multiple wind power generation modules 201, photovoltaic modules 209, and wind air compressor modules 204. The marine integrated energy island can be scheduled through the intelligent microgrid system 2 to achieve integrated and stable operation of the source, grid, and load.

[0031] In addition, the marine floating integrated energy island energy consumption system provided in this embodiment also includes a marine fishery module. Multiple installation positions 211 for installing marine fishery modules are formed on the truss floating platform 1. The marine fishery module is an aquaculture cage, and the aquaculture cage is powered by an electric energy storage module 208.

[0032] The above-described embodiments are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all changes made in accordance with the shape and principle of this utility model should be covered within the protection scope of this utility model.

Claims

1. A floating integrated energy island energy consumption system at sea, characterized in that: The system includes a truss-type floating platform and wind power generation module, hydrogen production module, wave energy compressed air module, wind power air compressor module, and waste heat seawater desalination module installed on the truss-type floating platform. The truss-type floating platform has a hollow, sealed space inside, serving as a low-pressure compressed air storage tank. The wave energy compressed air module has a moving cylinder within its buoyancy. The wind power air compressor module is connected to a small stall fan. Both the moving cylinder of the wave energy compressed air module and the wind power air compressor module are connected to the hollow, sealed space of the truss-type floating platform to store the compressed air generated by the wave energy compressed air module and the wind power air compressor module. The wind power air compressor module is sequentially connected to a pneumatic motor and a synchronous generator for auxiliary power supply. The waste heat seawater desalination module has a built-in biological evaporator for evaporating seawater and is connected to the hydrogen production module. The hydrogen production module is connected to the wind power generation module and the hollow, sealed space, and the wind power generation module is connected to the wind power air compressor module.

2. The offshore floating integrated energy island energy consumption system according to claim 1, characterized in that: It includes an air separation nitrogen generation module and a green ammonia synthesis module; both the air separation nitrogen generation module and the green ammonia synthesis module are installed on a truss-type floating platform. The hollow, sealed space of the truss-type floating platform is connected to the green ammonia synthesis module through the air separation nitrogen generation module, and the hydrogen generation module is connected to the green ammonia synthesis module.

3. The energy consumption system for a floating integrated energy island at sea according to claim 2, characterized in that: It includes photovoltaic modules, power transmission and transformation modules, power storage modules, and a smart microgrid system. The photovoltaic modules, power transmission and transformation modules, and power storage modules are all installed on a truss-type floating platform. The smart microgrid system is connected to wind power generation modules, hydrogen production modules, wave energy compressor modules, wind power air compressor modules, waste heat seawater desalination modules, air separation nitrogen production modules, green ammonia synthesis modules, photovoltaic modules, power transmission and transformation modules, and power storage modules. The smart microgrid system is connected to the power grid system through the power transmission and transformation modules.

4. The offshore floating integrated energy island energy consumption system according to claim 1, characterized in that: The tower of the wind-powered air compressor module has a hollow space inside that serves as an air storage tank.

5. The energy consumption system for a floating integrated energy island at sea according to claim 1, characterized in that: The wind power generation module is a wind turbine generator set.

6. The energy consumption system for a floating integrated energy island at sea according to claim 1, characterized in that: The truss-type floating platform is a hollow steel truss-type floating platform.

7. The energy consumption system for a floating integrated energy island at sea according to claim 1, characterized in that: The hydrogen production module is sequentially connected to a hydrogen booster and a high-pressure hydrogen storage tank, and the high-pressure hydrogen storage tank is connected to the green ammonia synthesis module.

8. The energy consumption system for a floating integrated energy island at sea according to claim 3, characterized in that: It includes a marine fishery module, which is connected to a photovoltaic module, a synchronous generator, and a power storage module.

9. The energy consumption system for a floating integrated energy island at sea according to claim 8, characterized in that: The marine fishery module is an aquaculture cage.

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