A deep - sea aquaculture structure based on an offshore single - pile foundation wind turbine

Abstract

A deep-sea aquaculture structure based on an offshore wind turbine with a single-pile foundation belongs to the technical fields of wind power generation and marine aquaculture. The structure comprises a single-pile offshore wind turbine, a fixed steel frame, an aquaculture cage, and a lifting device. The single-pile wind turbine consists of a wind turbine unit and a wind turbine pile. The fixed steel frame is square, surrounded by side piles and a wind turbine pile, with a central pile in the middle. Adjacent piles are connected by horizontal beams and diagonal braces, and a tuned inertia damper is installed between the central pile and the wind turbine pile. The aquaculture cage comprises a cage frame and a net, which is arranged at the bottom and sides of the cage frame. The cage frame is mounted on the pile through a sleeve, and the upper part of the cage sleeve is connected to a lifting steel cable, which is connected to a winch at the top of the central pile via a pulley. The integrated development and utilization of offshore wind power and marine aquaculture allows the offshore wind turbine to power the aquaculture cage, saving the electricity costs of traditional aquaculture cages, achieving intensive and economical utilization of marine resources, and improving overall economic benefits.

Description

Technical Field

[0001] The present invention belongs to the technical field of wind power generation and seawater aquaculture, and in particular relates to a deep-sea aquaculture structure based on an offshore single-pile foundation wind turbine. Background Art

[0002] Offshore wind farms have seen rapid growth in recent years due to their large installed capacity, long offshore locations, minimal noise pollution, and limited land use. Monopile offshore wind turbines are widely used due to their low cost and ease of installation. Approximately 86% of installed offshore wind turbines utilize monopile foundations.

[0003] Because monopile wind turbine foundations are installed on the seabed, the complex geological structure of the foundations means they must withstand numerous random loads, including wind, waves, and currents, as well as the threat of earthquakes. This makes monopile wind turbine foundations bulky and expensive. Numerous measures and efforts have been implemented to reduce the cost of offshore wind power, including reducing steel usage and improving transportation and installation efficiency. Even so, the annual revenue from power generation alone is still far less than the total investment in the wind farm, resulting in a slow payback period.

[0004] Cage aquaculture has already reached a considerable scale in my country, but it is primarily located in inner bays. The density is too high, the water quality is poor, and pollution is severe. Deep-sea aquaculture is a trend in the development of marine aquaculture. However, deep-sea aquaculture cages require a continuous and stable power supply, which poses energy supply challenges and hinders the development of marine aquaculture. Summary of the Invention

[0005] In order to solve the problems existing in the prior art, the present invention provides a deep-sea aquaculture structure based on an offshore single pile foundation wind turbine. On the one hand, it is beneficial to the economical utilization of marine resources and improves the overall benefits; on the other hand, the offshore wind turbine is used to power the aquaculture cages, which solves the problem of power supply difficulty for deep-sea aquaculture cages and is beneficial to the development of the aquaculture industry.

[0006] The technical solution adopted by the present invention is: a deep-sea aquaculture structure based on an offshore monopile foundation wind turbine, which includes a monopile foundation wind turbine, which includes a wind turbine pile and a wind turbine unit, a fixed steel frame is provided on the vertical steel sleeve of the wind turbine pile, and an aquaculture cage is provided on the fixed steel frame;

[0007] The fixed steel frame is also provided with a central pile and a side pile at each of the three outer corners. A horizontal beam is provided between the wind turbine pile, the central pile and the adjacent side piles; a diagonal brace is provided between the wind turbine pile and the side pile.

[0008] The aquaculture cage is provided with a net on the outside of the cage frame. The cage frame includes a bottom frame, vertical steel sleeves and horizontal rods. The vertical steel sleeves are respectively mounted on the fan piles, the center piles and the side piles; the horizontal rods are arranged between adjacent vertical steel sleeves.

[0009] An intelligent breeding platform is provided on the top of the central pile, and intelligent breeding equipment is provided on the central pile in the water below the intelligent breeding platform; a lifting device is also provided on the intelligent breeding platform, a winch is provided on the intelligent breeding platform, and a lifting steel cable is fixedly connected to the vertical steel sleeve of each pile by the winch through a pulley; the pulley is provided on the fan pile or the side pile;

[0010] A tuned inertia damper is arranged between the fan pile and the central pile. The tuned inertia damper adopts an inertia element connected in parallel with the damper and then connected in series with the spring device.

[0011] The tuned inertia damper is arranged at a position above the fan pile and the center pile close to the horizontal beam.

[0012] The net is fixed to the cage frame by cables.

[0013] The intelligent breeding platform is provided with a working and living room for breeding personnel, a breeding feed storage area, an electrical equipment storage room, a maintenance equipment storage room and a battery.

[0014] The intelligent breeding equipment is powered by a wind turbine or a battery.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) This aquaculture structure can not only utilize the abundant offshore wind energy resources for power generation, but also utilize seawater aquaculture to maximize resource utilization and increase economic output.

[0017] (2) The fixed steel frame structure formed by connecting large-diameter single pile foundations with small-diameter side piles has high rigidity and can withstand complex and harsh marine environmental loads, thereby improving the reliability of the wind turbine structure and the cage structure.

[0018] (3) The aquaculture cage is connected to the pile through a lifting device and can be moved up and down along the center of the pile. When strong winds and waves come, the water level of the cage can be lowered to reduce the impact of wind and waves on the fish in the cage. When harvesting and replacing and repairing the cage equipment, the cage can be raised to facilitate operation by the aquaculture and maintenance personnel.

[0019] (4) A tuned inertial damper is installed between the fan pile and the central pile with the breeding platform, which improves the vibration problem of the fan and cage structure under complex environmental loads. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is the main structural view of a deep-sea aquaculture structure based on an offshore monopile foundation wind turbine.

[0021] Figure 2 It is a top view of the fixed steel frame of a deep-sea aquaculture structure based on an offshore monopile foundation wind turbine.

[0022] Figure 3 This is the main view of the aquaculture cage structure of a deep-sea aquaculture structure based on an offshore single pile foundation wind turbine.

[0023] Figure 4 This is a top view of the aquaculture cage structure of a deep-sea aquaculture structure based on an offshore monopile foundation wind turbine.

[0024] Figure 5 It is a schematic diagram of the lifting structure of a deep-sea aquaculture structure based on an offshore monopile foundation wind turbine.

[0025] Figure 6 It is a schematic diagram of a tuned inertial damper for a deep-sea aquaculture structure based on an offshore monopile foundation wind turbine.

[0026] In the figure: 1. Single pile foundation wind turbine, 1a. Wind turbine, 1b. Wind turbine pile, 2. Fixed steel frame, 2a. Side piles, 2b. Center pile, 2c. Horizontal beam, 2d. Diagonal brace, 3. Aquaculture cage, 3a. Cage frame, 3b. Net, 3a1. Vertical steel sleeve, 3a2. Horizontal rod, 3a3. Bottom frame, 4. Lifting device, 4a. Winch, 4b. Pulley, 4c. Lifting steel cable, 5. Intelligent aquaculture platform, 6. Intelligent aquaculture equipment, 7. Cable, 8. Tuned inertial damper, 8a. Inertial element, 8b. Damper, 8c. Spring device. DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0028] like Figures 1 to 6 As shown, a deep-sea aquaculture structure based on an offshore monopile foundation wind turbine includes a monopile foundation wind turbine 1. The monopile foundation wind turbine 1 includes a wind turbine pile 1b and a wind turbine unit 1a. A fixed steel frame 2 is provided on the periphery of the wind turbine pile 1b, and an aquaculture cage 3 is provided on the fixed steel frame 2.

[0029] The fixed steel frame (2) is also provided with a center pile 2b and a side pile 2a at each of the three outer corners. Horizontal beams 2c are provided between adjacent wind turbine piles 1b, center piles 2b, and side piles 2a. Diagonal braces 2d are provided between wind turbine piles 1b and side piles 2a. Aquaculture cage 3 is provided with a net 3b on the outside of the cage frame 3a. The cage frame 3a includes a bottom frame 3a3, vertical steel sleeves 3a1, and horizontal rods 3a2. The vertical steel sleeves 3a1 are respectively mounted on the wind turbine pile 1b, center pile 2b, and side piles 2a. The horizontal rods 3a2 are provided between adjacent vertical steel sleeves 3a1.

[0030] An intelligent breeding platform 5 is set on the top of the central pile 2b, and intelligent breeding equipment 6 is set on the central pile 2b in the water below the intelligent breeding platform 5; a lifting device 4 is also set on the intelligent breeding platform 5, a winch 4a is set on the intelligent breeding platform 5, and a lifting steel cable 4c is connected to the vertical steel sleeve 3a1 by the winch 4a through the pulley 4b.

[0031] A tuned inertia damper 8 is installed between the wind turbine pile 1b and the central pile 2b. This damper 8 uses an inertia element 8a connected in parallel with a damper 8b and then in series with a spring device 8c. The damper 8 is located above the wind turbine pile 1b and the central pile 2b, near the horizontal beam 2c.

[0032] The net 3b is fixed to the cage frame 3a by cables 7.

[0033] The intelligent breeding platform 5 is equipped with a living room for breeding staff, a breeding feed storage area, a room for electrical equipment, a room for maintenance equipment and a battery. The intelligent breeding equipment 6 is powered by a wind turbine or a battery.

[0034] Using the above technical solution, the deep-sea aquaculture structure based on the single pile foundation wind turbine in this embodiment is located at a water depth of 30-40m, the diameter of the wind turbine pile 1b is 8m, the diameters of the side piles 2a and the center pile 2b are 1.0-1.5m, and the side length of the fixed steel frame 2 is 20-25m.

[0035] The structure comprises a single-pile offshore wind turbine 1, a fixed steel frame 2, aquaculture cages 3, and a lifting device 4. The single-pile wind turbine 1 consists of a wind turbine 1a and a turbine pile 1b. The fixed steel frame 2 is square, formed by side piles 2a and turbine piles 1b, with a center pile 2b located in the middle. Adjacent piles are connected by horizontal beams 2c and diagonal braces 2d. The side piles 2a and center pile 2b are steel pipe piles. An intelligent aquaculture platform 5 is located above the center pile 22. A tuned inertia damper is installed between the center pile 2b and turbine pile 1b.

[0036] The intelligent farming platform 5 is equipped with a living room for farmers, a storage area for livestock feed, a room for electrical equipment, a room for maintenance equipment, and a battery. When the wind turbine 11 is running, it can directly power the electrical equipment and charge the battery.

[0037] The aquaculture cage 3 includes a cage frame 3a and a net 3b. The cage frame 3a consists of a vertical steel sleeve 3a1, a horizontal rod 3a2 and a bottom frame 3a2. The vertical steel sleeve 3a1 is nested on the side pile 3, the center pile 1b and the fan pile 2. The horizontal rod 3a2 is fixedly connected to the vertical steel sleeve 3a1 and the bottom frame 3a2.

[0038] The net 3b is connected to the cage frame 3a by a cable 7, and the net 5 is arranged on the top, bottom and side of the cage frame 1c to form a closed and stable breeding space. In this embodiment, the net and the cable are made of ultra-high molecular polyethylene.

[0039] An intelligent breeding device 6 is provided in the middle of the breeding cage 3, and the intelligent breeding device 6 can be directly powered by the wind turbine 1a when the wind turbine is operating normally, and can also be powered by a battery when the wind turbine 1a stops due to a fault or in severe sea conditions.

[0040] The lifting device 4 includes a winch 4a, a pulley 4b, and a lifting cable 4c. The winch 4a is located on top of the center pile 2b, while the pulley 4b is located on top of the side piles and inside the wind turbine piles at the same height. One end of the lifting cable 4c is connected to the vertical steel casing 3a1 of the cage, and the other end is connected to the winch 4a via the pulley 4b.

[0041] The tuned inertia damper 8 comprises an inertial element 8a, a damper 8b, and a spring assembly 8c. The inertial element 8a and damper 8b are connected in parallel and then in series with the spring assembly 8c. The ends of the tuned inertia damper 8 are connected to the center pile 2b and the wind turbine pile 1b, respectively. When relative displacement occurs between the center pile 2b and the wind turbine pile 1b, that is, when relative displacement occurs between the ends of the tuned inertia damper 8, the tuned inertia damper 8 generates a control force that acts on the center pile 2b and the wind turbine pile 1b at the ends, thereby reducing the vibration of the structure under complex environmental loads.

[0042] Although the preferred embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, which all fall within the scope of protection of the present invention.

Claims

1. A deep-sea aquaculture structure based on an offshore single-pile foundation wind turbine, comprising a single-pile foundation wind turbine (1), wherein the single-pile foundation wind turbine (1) comprises a wind turbine pile (1b) and a wind turbine unit (1a), and is characterized in that: A fixed steel frame (2) is provided on the vertical steel sleeve (3a1) of the wind turbine pile (1b), and a breeding cage (3) is provided on the fixed steel frame (2); The fixed steel frame (2) is further provided with a central pile (2b), and a side pile (2a) is provided at each of the three outer corners; a horizontal beam (2c) is provided between adjacent two of the wind turbine pile (1b), the central pile (2b), and the side pile (2a); and a diagonal brace (2d) is provided between the wind turbine pile (1b) and the side pile (2a); The aquaculture cage (3) is provided with a net (3b) on the outside of the cage frame (3a). The cage frame (3a) comprises a bottom frame (3a3), a vertical steel sleeve (3a1) and a horizontal rod (3a2). The vertical steel sleeve (3a1) is respectively mounted on the fan pile (1b), the center pile (2b) and the side pile (2a); the horizontal rod (3a2) is arranged between adjacent vertical steel sleeves (3a1). An intelligent breeding platform (5) is provided on the top of the central pile (2b), and intelligent breeding equipment (6) is provided on the central pile (2b) in the water below the intelligent breeding platform (5); a lifting device (4) is also provided on the intelligent breeding platform (5), a winch (4a) is provided on the intelligent breeding platform (5), a pulley (4b) is provided on the fan pile (1b) or the side pile (2a), and a lifting steel cable (4c) is fixedly connected to the vertical steel sleeve (3a1) of each pile after passing through the pulley (4b) from the winch (4a); A tuned inertia damper (8) is provided between the wind turbine pile (1b) and the central pile (2b). The tuned inertia damper (8) uses an inertia element (8a) connected in parallel with a damper (8b) and then connected in series with a spring device (8c).

2. The deep-sea aquaculture structure based on an offshore monopile foundation wind turbine according to claim 1, characterized in that: The tuned inertia damper (8) is provided at a position on the upper part of the fan pile (1b) and the center pile (2b) close to the horizontal beam (2c).

3. The deep-sea aquaculture structure based on an offshore monopile foundation wind turbine according to claim 1, characterized in that: The net (3b) is fixed to the cage frame (3a) via cables (7).

4. The deep-sea aquaculture structure based on an offshore monopile foundation wind turbine according to claim 1, characterized in that: The intelligent breeding platform (5) is provided with a living room for breeding staff, a breeding feed storage area, an electrical equipment storage room, a maintenance equipment storage room and a battery.

5. The deep-sea aquaculture structure based on an offshore monopile foundation wind turbine according to claim 1, characterized in that: The intelligent farming equipment (6) is powered by a wind turbine or a battery.

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