In-situ compressed air energy storage system fused with offshore wind power

Abstract

The utility model discloses an in-situ compressed air energy storage system fused with offshore wind power, which belongs to the technical field of offshore wind power generation and energy storage and comprises a jacket foundation, a wind driven generator transition section is arranged at the center of the top of the jacket foundation, and an underwater steel platform is arranged at the lower end of the outer side of the jacket foundation. A flexible gas storage container is installed in the middle of the underwater steel platform, a jacket overhanging type platform is arranged at the upper end of the outer side of the jacket foundation, an energy storage module is arranged at the left end of the top of the jacket overhanging type platform, and an energy release module is arranged at the right end of the top of the jacket overhanging type platform. The energy storage module and the energy release module are symmetrically arranged at the left end and the right end of the top of the jacket overhanging type platform respectively, so that the energy storage module and the energy release module can achieve relatively independent functions, the compressed air energy storage function can be achieved after the energy storage module and the energy release module are combined, and eccentricity of the platform is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of offshore wind power generation and energy storage, and in particular to an in-situ compressed air energy storage system integrated with offshore wind power. Background Art

[0002] Energy is the foundation of human social development. Advances in energy technology and changes in energy types determine the nature and nature of human development. Currently, energy development is undergoing a critical period of profound change and significant adjustments. Faced with the dual challenges of global climate change and ecological degradation, the vigorous development of clean and renewable energy has become an inevitable trend in energy development. Wind power, as a clean and renewable energy source, offers significant social and environmental benefits and plays a vital role in promoting renewable energy development in my country.

[0003] Offshore wind power has experienced rapid growth in recent years, becoming a key research area in many countries. In line with the EU's energy development plan, offshore wind farms have been established in countries such as the UK, Germany, and the Netherlands, with significant success. Furthermore, offshore wind power is also gaining momentum in China. With its vast potential market and advantageous marine resources, China has already established numerous offshore wind farms in Fujian, Guangdong, and Jiangsu.

[0004] Currently, offshore wind power projects typically consist of three components: offshore wind turbines, offshore booster stations, and onshore energy storage systems, with power transmitted via high-voltage submarine cables. Due to the uncertainty of offshore wind resources, the frequency of power generation fluctuates significantly, and the distribution of power is relatively discrete. This places higher demands on the load capacity of submarine cables and the regulatory capabilities of onshore energy storage systems.

[0005] Energy storage systems facilitate peak load shifting, improve power supply reliability, enhance system efficiency, strengthen the grid's resilience to shocks, increase regulation margins, and better balance supply and demand. In-situ compressed air energy storage systems can integrate energy storage systems with offshore wind turbines, enabling in-situ energy storage, avoiding the need for additional storage space, and shaving peak loads from the power source, reducing the load on submarine cables.

[0006] Existing technologies combine compressed air energy storage systems with offshore wind turbines, placing them on the turbines. This improvement leads to larger foundations, heavier loads, and greater eccentricity of the gravity load. Utility Model Content

[0007] To improve upon the prior art approach of integrating compressed air energy storage systems with offshore wind turbines, the compressed air energy storage systems are installed on the offshore wind turbines. This improvement, however, results in increased size and load on the upper foundation, as well as significant gravity load eccentricity. The present invention provides an in-situ compressed air energy storage system integrated with offshore wind turbines.

[0008] The utility model provides an in-situ compressed air energy storage system integrated with offshore wind power, which adopts the following technical solutions:

[0009] An in-situ compressed air energy storage system integrated with offshore wind power includes a jacket foundation, a wind turbine transition section is provided at the center of the top of the jacket foundation, an underwater steel platform is provided at the lower end of the outer side of the jacket foundation, a flexible gas storage container is installed in the middle of the underwater steel platform, a jacket overhanging platform is provided at the upper end of the outer side of the jacket foundation, an energy storage module is provided at the left end of the top of the jacket overhanging platform, and an energy release module is provided at the right end of the top of the jacket overhanging platform.

[0010] By adopting the above technical solution, the energy storage module and the energy release module are symmetrically arranged at the left and right ends of the top of the jacket cantilevered platform, so that the energy storage module and the energy release module can not only realize relatively independent functions, but also realize the function of compressed air energy storage after the combination of the energy storage module and the energy release module, thereby solving the problems of large plane size, large load and large eccentricity of gravity load of the upper module.

[0011] Optionally, the energy storage module is provided with two layers, wherein a cable and a delivery pipeline are provided inside the energy storage module of one layer, and a heat accumulator and an air compressor are provided at the upper and lower ends of the energy storage module of the other layer respectively;

[0012] The energy release module is provided with two layers, wherein one layer of the energy release module is provided with cables and conveying pipes, and the other layer of the energy release module is provided with a heat exchanger, an expander and a generator body from top to bottom.

[0013] By adopting the above technical solution, the energy storage module and the energy release module can realize relatively independent functions, and the combination of the energy storage module and the energy release module can also realize the function of compressed air energy storage.

[0014] Optionally, the energy storage module and the energy release module are similar in size and weight.

[0015] By adopting the above technical solution, the platform eccentricity is reduced.

[0016] Optionally, a connecting module is provided between the energy storage module and the energy release module, and the connecting module is provided with two layers. The floor height of the two layers of the connecting modules is the same as the floor height of the two layers of the energy storage module and the energy release module. The connecting module is respectively communicated with the energy storage module and the energy release module, and a pedestrian passage, a cable passage and a conveying pipeline are respectively provided inside the connecting module.

[0017] By adopting the above technical solution, the connection between the energy storage module and the energy release module is facilitated.

[0018] Optionally, a connection node is provided between the top of the jacket foundation and the upper module column, and a reverse plug tip is provided on the top of the connection node, with the reverse plug tip facing upward.

[0019] By adopting the above technical solution, when the upper module column is installed, the upper module column is guided into the reverse plug tip, thereby facilitating accurate alignment and positioning.

[0020] Optionally, a horizontal ring plate is provided at the bottom of the reverse plug tip, and the horizontal ring plate is welded to the upper module column, and the welding direction is forward welding.

[0021] By adopting the above technical solution, welding construction is facilitated and welding quality is guaranteed.

[0022] Optionally, the jacket cantilevered platform adopts a triangular truss structure, the vertical rods on the jacket cantilevered platform are the main rods on the jacket foundation, the horizontal rods on the jacket cantilevered platform are H-shaped steels, the diagonal rods on the jacket cantilevered platform are steel pipes, and connection nodes are provided at the intersection of the diagonal rods and the horizontal rods on the jacket cantilevered platform.

[0023] By adopting the above technical solution, the structure of the jacket foundation is reasonable and the force is clear.

[0024] In summary, the present invention has at least one of the following beneficial effects:

[0025] By symmetrically arranging energy storage modules and energy release modules on the left and right ends of the top of the jacket cantilevered platform, the energy storage modules and the energy release modules can realize relatively independent functions. When the energy storage modules and the energy release modules are combined, the function of compressed air energy storage can be realized, reducing the eccentricity of the platform.

[0026] By setting up an underwater steel platform, the underwater space is rationally utilized, while the overall stability of the jacket foundation is enhanced, effectively improving the lateral force resistance of the wind turbine foundation.

[0027] By setting a connecting module between the energy storage module and the energy release module, the connecting module serves as a cable and transmission pipeline between the energy storage module and the energy release module, and also as a traffic channel between the energy storage module and the energy release module, thereby facilitating the connection between the energy storage module and the energy release module.

[0028] By setting up a cantilevered platform for the jacket, the structure of the jacket foundation is reasonable and the force is clear. At the same time, the energy storage system serves as a counterweight for the wind turbine, which is beneficial to its vibration reduction. The foundation of the energy storage system and the foundation of the wind turbine are effectively unified into one foundation, saving construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 This is a schematic diagram of the planar structure of the energy storage module and the energy release module of the present utility model;

[0031] Figure 2 This is a schematic diagram of the cross-sectional structure of the energy storage module and the energy release module of the present utility model;

[0032] Figure 3 It is a schematic diagram of the overall structure of the utility model;

[0033] Figure 4 This is a schematic diagram of the connection structure between the upper module column and the jacket foundation of the present invention.

[0034] In the figure: 1. Energy storage module; 2. Energy release module; 3. Connection module; 4. Heat accumulator; 5. Air compressor; 6. Heat exchanger; 7. Expander; 8. Generator body; 9. Wind turbine transition section; 10. Jacket cantilever platform; 11. Jacket foundation; 12. Flexible gas storage container; 13. Underwater steel platform; 14. Reverse plug tip; 15. Horizontal ring plate. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-4 The utility model is described in further detail.

[0036] Please refer to the attached figure in the instruction manual Figure 3 and Figure 4The present invention provides an embodiment: an in-situ compressed air energy storage system integrated with offshore wind power, comprising a jacket foundation 11, a wind turbine transition section 9 is provided at the center of the top of the jacket foundation 11, a connection node is provided between the top of the jacket foundation 11 and the upper module column, a reverse plug tip 14 is provided at the top of the connection node, and the reverse plug tip 14 is directed upward. When the upper module column is installed, the upper module column is guided into the reverse plug tip 14, thereby facilitating precise alignment and positioning. A horizontal ring plate 15 is provided at the bottom of the reverse plug tip 14, and the horizontal ring plate 15 is welded to the upper module column, and the welding direction is forward welding. It is convenient for welding construction and ensures welding quality.

[0037] Please refer to the attached figure in the instruction manual Figure 3 An underwater steel platform 13 is installed at the lower end of the outer side of the jacket foundation 11, with a flexible gas storage container 12 installed in the middle of the underwater steel platform 13. A jacket overhang platform 10 is installed at the upper end of the outer side of the jacket foundation 11. Jacket overhang platform 10 adopts a triangular truss structure. The vertical rods on jacket overhang platform 10 are the main rods on the jacket foundation 11, the horizontal rods on jacket overhang platform 10 are H-shaped steel, and the diagonal rods on jacket overhang platform 10 are steel pipes. Connection nodes are set at the intersection of the diagonal rods and horizontal rods on jacket overhang platform 10. This makes the structure of jacket foundation 11 reasonable and the force clearly defined.

[0038] Please refer to the attached figure in the instruction manual Figure 1 、 Figure 2 and Figure 3 An energy storage module 1 is provided at the left end of the top of the jacket rack cantilevered platform 10, and an energy release module 2 is provided at the right end of the top of the jacket rack cantilevered platform 10. The energy storage module 1 is provided with two layers, one of which is provided with cables and transmission pipelines, and the other is provided with a heat accumulator 4 and an air compressor 5 at the upper and lower ends thereof.

[0039] Please refer to the attached figure in the instruction manual Figure 1 and Figure 2 The energy release module 2 is configured in two layers. One layer houses cables and pipelines, while the other layer houses, from top to bottom, a heat exchanger 6, an expander 7, and a generator 8. This allows the energy storage module 1 and energy release module 2 to function independently, while also combining them to store compressed air energy. The size and weight of the energy storage module 1 and energy release module 2 are similar, reducing platform eccentricity.

[0040] Please refer to the attached figure in the instruction manual Figure 1 and Figure 2A connection module 3 is provided between the energy storage module 1 and the energy release module 2. The connection module 3 has two layers, and the height of the two layers of the connection module 3 is the same as the height of the two layers of the energy storage module 1 and the energy release module 2. The connection module 3 is connected to the energy storage module 1 and the energy release module 2 respectively. The connection module 3 is provided with a pedestrian passage, a cable passage, and a conveying pipeline inside. This facilitates the connection between the energy storage module 1 and the energy release module 2.

[0041] Working principle: During the energy storage stage, the air compressor 5 in the energy storage module 1 fills air into the flexible gas storage container 12, and the flexible gas storage container 12 is fixed on the underwater steel platform 13. The air is transported to the interior of the flexible gas storage container 12 through the delivery pipeline. After reaching the storage pressure, the hydrostatic pressure of the water keeps the flexible gas storage container 12 at a constant pressure. The heat generated during the energy storage stage is recovered and stored in the heat accumulator 4 to minimize heat loss.

[0042] During the energy release stage, the compressed air from the flexible gas storage container 12 returns to the energy storage system through the energy release pipeline. Before entering the expander 7 in the energy release module 2, this part of cold air is heated by the heat exchanger 6 using the stored compression heat, and finally passes through the generator body 8 to generate electricity. The energy storage module 1 and the energy release module 2 adopt a symmetrical arrangement technology. At the same time, the size and weight of the energy storage module 1 and the energy release module 2 are similar, which solves the problems of large plane size, large load and large eccentricity of gravity load of the upper module.

[0043] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. An in-situ compressed air energy storage system integrated with offshore wind power, comprising a jacket foundation (11), characterized in that: A wind turbine transition section (9) is provided at the center of the top of the jacket foundation (11), an underwater steel platform (13) is provided at the lower end of the outer side of the jacket foundation (11), a flexible gas storage container (12) is installed in the middle of the underwater steel platform (13), a jacket overhanging platform (10) is provided at the upper end of the outer side of the jacket foundation (11), an energy storage module (1) is provided at the left end of the top of the jacket overhanging platform (10), and an energy release module (2) is provided at the right end of the top of the jacket overhanging platform (10).

2. The in-situ compressed air energy storage system integrated with offshore wind power according to claim 1, characterized in that: The energy storage module (1) is provided with two layers, wherein a cable and a transmission pipeline are provided inside the energy storage module (1) of one layer, and a heat accumulator (4) and an air compressor (5) are provided at the upper and lower ends of the energy storage module (1) of the other layer respectively; The energy release module (2) is provided with two layers, wherein one layer of the energy release module (2) is provided with cables and a transmission pipeline, and the other layer of the energy release module (2) is provided with a heat exchanger (6), an expander (7) and a generator body (8) from top to bottom.

3. The in-situ compressed air energy storage system integrated with offshore wind power according to claim 1, characterized in that: The energy storage module (1) and the energy release module (2) are similar in size and weight.

4. The in-situ compressed air energy storage system integrated with offshore wind power according to claim 1, characterized in that: A connection module (3) is provided between the energy storage module (1) and the energy release module (2), and the connection module (3) is provided with two layers. The layer height of the two layers of the connection module (3) is the same as the layer height of the two layers of the energy storage module (1) and the energy release module (2). The connection module (3) is communicated with the energy storage module (1) and the energy release module (2) respectively, and a pedestrian passage, a cable passage and a conveying pipeline are respectively provided inside the connection module (3).

5. The in-situ compressed air energy storage system integrated with offshore wind power according to claim 1, characterized in that: A connection node is provided between the top of the jacket foundation (11) and the upper module column, and a reverse plug tip (14) is provided on the top of the connection node, with the reverse plug tip (14) facing upward.

6. The in-situ compressed air energy storage system integrated with offshore wind power according to claim 5, characterized in that: A horizontal ring plate (15) is provided at the bottom of the reverse plug tip (14), and the horizontal ring plate (15) is welded to the upper module column, and the welding direction is forward welding.

7. The in-situ compressed air energy storage system integrated with offshore wind power according to claim 1, characterized in that: The jacket cantilevered platform (10) adopts a triangular truss structure, the vertical rods on the jacket cantilevered platform (10) are main rods on the jacket foundation (11), the horizontal rods on the jacket cantilevered platform (10) are H-shaped steels, the diagonal rods on the jacket cantilevered platform (10) are steel pipes, and a connection node is provided at the intersection of the diagonal rods and the horizontal rods on the jacket cantilevered platform (10).

Images