Lifting type net cage culture structure based on fan single pile foundation

Abstract

The invention relates to a lifting type net cage culture structure based on a fan single-pile foundation, and the structure comprises the fan single-pile foundation which is used for being inserted into a seabed; the net cage is arranged on the fan single pile foundation in a lifting and sleeving manner in the height direction; the guide mechanism comprises a guide piece extending in the height direction, the guide piece is fixedly connected to the fan single pile foundation, and the net cage is arranged on the guide piece in a sliding mode. The lifting type net cage culture structure based on the fan single pile foundation has high safety and stability.

Description

Technical Field

[0001] The present disclosure relates to the technical field of offshore wind power engineering, and in particular to a lifting cage culture structure based on a wind turbine monopile foundation. Background Art

[0002] As marine aquaculture moves towards the deep sea, facility safety is the primary issue faced. According to the currently built truss cages, in order to ensure that they can withstand harsh working conditions during operation and thus improve the design standards, the construction cost has increased significantly compared to traditional nearshore cages, which has seriously restricted the development of the marine aquaculture industry. It is urgent to find stable offshore facilities to protect their structural safety.

[0003] In the related technology, the offshore wind turbine monopile foundation is used as the fixed support structure of the cage, and by controlling the lifting of the cage, the wave force on the cage and the force formed by the current acting on the cage are greatly reduced, so that the design standards can be lowered while ensuring the safety of the structure, thereby greatly reducing the construction cost of the cage. However, since the cage is large in size and is easily shaken by wind and waves during the lifting process, it only relies on the monopile foundation as a guide. When the cage shakes too much, it may affect the reliability of the cage structure. Summary of the invention

[0004] The purpose of the present invention is to provide a lifting cage aquaculture structure based on a wind turbine monopile foundation, and the lifting cage aquaculture structure based on the wind turbine monopile foundation has good safety and stability.

[0005] In order to achieve the above-mentioned purpose, the present disclosure provides a lifting cage aquaculture structure based on a wind turbine monopile foundation, comprising: a wind turbine monopile foundation, which is used to be inserted into the seabed and install a wind turbine; a cage, which is liftably mounted outside the wind turbine monopile foundation in a height direction; and a guide mechanism, which comprises a guide member extending in a height direction, the guide member being fixedly connected to the wind turbine monopile foundation, and the cage being slidably mounted on the guide member.

[0006] Optionally, the guide mechanism includes a flange device fixed to the wind turbine monopile foundation, and the guide member includes a plurality of guide rods, which are arranged at circumferential intervals around the wind turbine monopile foundation and are respectively connected to the flange device.

[0007] Optionally, the guide rod is a metal rod, the upper end of which is fixed to the flange device and the lower end is inserted into the seabed. Three guide rods are arranged, and the three guide rods are evenly spaced around the circumference of the wind turbine single pile foundation to form a three-pile conduit structure.

[0008] Optionally, the flange device includes a flange body and a plurality of radial supports, wherein the plurality of radial supports extend radially outward from the flange body and outer ends thereof are perpendicular to the guide rod.

[0009] Optionally, a sliding sleeve is slidably connected to the guide rod, and the sliding sleeve is fixedly connected to the outer periphery of the mesh box. The sliding sleeves are arranged in multiple groups in the circumferential direction and are arranged at intervals. Each group of sliding sleeves includes multiple sliding sleeves arranged at intervals along the height direction to sleeve the same guide rod.

[0010] Optionally, the lifting cage farming structure based on the wind turbine single pile foundation also includes a ballast system, including a water pump and a ballast tank arranged on the cage, the water pump is connected to the ballast tank through a pipeline to control the lifting of the cage, the pipeline is arranged along the guide member or arranged in the guide member, and the ballast tank is used to introduce ballast water.

[0011] Optionally, the cage frame and the net connected to the frame enclose a breeding area, the frame includes an annular upper frame, an annular lower frame and a side frame connected between the annular upper frame and the annular lower frame, the annular upper frame is composed of a hollow pipe to form the ballast tank inside the hollow pipe.

[0012] Optionally, the annular upper frame includes an annular inner tube, an annular outer tube, and a radial tube connected between the annular inner tube and the annular outer tube, and the annular inner tube, the annular outer tube and the radial tube are connected to each other.

[0013] Optionally, some adjacent radial tube supports are also connected and communicated with a connecting rod, which divides the area between the corresponding adjacent radial tubes into an inner area and an outer area, one of the inner area and the outer area covers the mesh, and the other is open, and the mesh is a two-layer mesh structure.

[0014] Optionally, the cage culture structure further includes a functional device, and the guide mechanism includes a flange device surrounding a foundation and a guide rod connected to the flange device, and the flange device is located above the cage and is used for installing the functional device.

[0015] Through the above technical scheme, the cage can be lifted and lowered in the height direction and arranged outside the wind turbine monopile foundation, which can efficiently utilize the ocean space in a three-dimensional manner, and utilize the excellent water quality of the deep sea and the environmental characteristics of different water layers to improve the quality and yield of farmed fish species, while reducing the difficulty and cost of building deep sea cages alone. In addition, the cage can be lifted and lowered to improve the survival ability of the cage in extreme sea conditions. By setting the guide piece, it can guide the lifting and lowering of the cage, ensure the stability of the cage when it is lifted and lowered in the height direction, avoid excessive swaying and tilting of the cage due to the impact of waves, resulting in damage to the cage structure or stress response of the internal farmed organisms, and improve the safety of the cage during lifting and lowering. At the same time, by sliding the cage on the guide piece, the direct friction between the cage and the wind turbine monopile foundation is reduced, which can extend the service life of the cage and reduce maintenance costs. Therefore, through the above structure, the safety and stability of the liftable cage farming structure based on the wind turbine monopile foundation are improved.

[0016] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings: Figure 1 It is a schematic diagram of the overall structure of a lifting cage aquaculture structure based on a wind turbine single pile foundation provided by an embodiment of the present disclosure; Figure 2 It is a structural schematic diagram of a cage and a guide mechanism of a lifting cage aquaculture structure based on a fan single pile foundation provided by an embodiment of the present disclosure.

[0018] Description of Reference Numerals 1- single pile foundation of wind turbine, 2- net box, 21- annular upper frame, 211- annular outer tube, 212- annular inner tube, 213- radial tube, 214- connecting rod, 215- inner area, 216- outer area, 22- annular lower frame, 23- side frame, 24- net, 3- guide mechanism, 31- guide part, 311- guide rod, 32- flange device, 321- flange body, 322- radial bracket, 33- sliding sleeve, 4- ballast system, 41- water pump, 42- ballast tank, 10- wind turbine. DETAILED DESCRIPTION

[0019] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0020] In the present disclosure, unless otherwise specified, the directional words "inside" and "outside" used refer to the "inside" and "outside" relative to the contour of the corresponding component itself. The directional words "upper" and "lower" used generally refer to the "upper" and "lower" relative to the direction of gravity when the corresponding component is in use. In addition, in the following description, when referring to the drawings, the same symbols in different drawings represent the same elements. It should be understood by those skilled in the art that the above definitions are only used to explain and illustrate the present disclosure and should not be understood as limitations on the present disclosure.

[0021] According to the specific implementation of the present disclosure, Figure 1 and Figure 2 As shown, a lifting cage aquaculture structure based on a wind turbine monopile foundation is provided, comprising: a wind turbine monopile foundation 1, which is used to be inserted into the seabed and install a wind turbine 10; a cage 2, which is liftably mounted outside the wind turbine monopile foundation 1 in the height direction; and a guide mechanism 3, which comprises a guide member 31 extending in the height direction, the guide member 31 is fixedly connected to the wind turbine monopile foundation 1, and the cage 2 is slidably mounted on the guide member 31.

[0022] Through the above technical solution, the cage 2 can be lifted and lowered in the height direction and arranged outside the wind turbine monopile foundation 1, which can effectively utilize the ocean space in a three-dimensional manner, and utilize the excellent water quality of the deep sea and the environmental characteristics of different water layers to improve the quality and yield of farmed fish species, while reducing the difficulty and cost of building a deep sea cage 2 alone. In addition, the survivability of the cage 2 in extreme sea conditions is improved by setting the cage 2 to be liftable. By setting the guide member 31, it can guide the lifting of the cage 2, ensure the stability of the cage 2 when it is lifted and lowered in the height direction, avoid excessive swaying and tilting of the cage 2 due to the impact of waves, resulting in structural damage to the cage 2 or stress response of the internal farmed organisms, and improve the safety of the cage 2 during the lifting process. At the same time, by sliding the cage 2 on the guide member 31, the direct friction between the cage 2 and the wind turbine monopile foundation 1 is reduced, which can extend the service life of the cage 2 and reduce the maintenance cost. Therefore, through the above structure, the safety and stability of the liftable cage 2 farming structure based on the wind turbine monopile foundation 1 are improved.

[0023] In some embodiments of the present disclosure, reference Figure 2As shown, the guide mechanism 3 includes a flange device 32 fixed to the wind turbine monopile foundation 1, and the guide member 31 includes a plurality of guide rods 311, which are arranged at intervals around the circumference of the wind turbine monopile foundation 1 and are respectively connected to the flange device 32. In this way, by setting the flange device 32, the wind turbine 10 can be connected and disassembled with the wind turbine monopile foundation 1, the stability of the overall structure is improved, and by connecting the plurality of guide rods 311 to the flange device 32, the utilization of the space of the flange device 32 is improved. Among them, the provision of a plurality of guide rods 311 is conducive to dispersing the stress generated on a single guide rod 311 when the net box 2 is lifted and lowered under the influence of waves, avoiding structural damage to the net box 2 or the guide rod 311 due to stress concentration, and at the same time, the multi-point distribution of the plurality of guide rods 311 can ensure that the net box 2 is lifted and lowered smoothly under the action of waves, avoiding friction between the net box 2 and the guide rod 311 or between the net box 2 and the wind turbine monopile foundation 1 due to unilateral tilt.

[0024] In some embodiments of the present disclosure, reference Figure 2 As shown, the guide rod 311 is a metal rod, the upper end of which is fixed to the flange device 32, and the lower end is inserted into the seabed. There are three guide rods 311, and the three guide rods 311 are arranged at equal intervals around the wind turbine monopile foundation 1 to form a three-pile conduit structure. In this way, the guide rod 311 is set as a metal rod, so that the guide rod 311 has a higher structural strength. Since the lower end of the guide rod 311 is inserted into the seabed, it can support the wind turbine monopile foundation 1, thereby dispersing the load borne by the wind turbine monopile foundation 1, further improving the structural stability of the wind turbine monopile foundation 1, and thus improving the anti-overturning ability of the wind turbine monopile foundation 1. By arranging the three guide rods 311 at equal intervals around the wind turbine monopile foundation 1, the three-pile conduit structure formed in this way can evenly disperse the load, reduce deformation and displacement, thereby improving the stability of the overall structure, while ensuring the structural reliability, reducing structural redundancy and reducing material costs.

[0025] In some embodiments of the present disclosure, reference Figure 2 As shown, the flange device 32 includes a flange body 321 and a plurality of radial brackets 322, wherein the plurality of radial brackets 322 extend radially outward from the flange body 321 and the outer ends thereof intersect the guide rod 311 vertically. In this way, the guide rod 311 is connected to the wind turbine monopile foundation 1 by the radial brackets 322, so as to realize the connection between the guide rod 311 and the wind turbine monopile foundation 1, and at the same time, ensure the connection strength between the wind turbine monopile foundation 1 and the guide rod 311. By vertically connecting the guide rod 311 and the radial brackets 322, the torsion resistance between the guide rod 311 and the radial brackets 322 is improved while ensuring the connection strength, so as to prevent the guide mechanism 3 from being excessively deformed or collapsed when subjected to external force, thereby improving the structural stability of the guide mechanism 3.

[0026] In some embodiments of the present disclosure, reference Figure 1 and2 As shown, a sliding sleeve 33 is slidably connected to the guide rod 311, and the sliding sleeve 33 is fixedly connected to the outer periphery of the net box 2. The sliding sleeves 33 are arranged in multiple groups in the circumferential direction and are arranged at intervals. Each group of sliding sleeves 33 includes multiple sliding sleeves 33 arranged at intervals in the height direction to cover the same guide rod 311. In this way, by setting multiple groups of sliding sleeves 33, it is ensured that the outer periphery of the net box 2 can move smoothly along the guide rod 311 during the movement process, avoiding the net box 2 from getting stuck during the lifting process, affecting the lifting efficiency of the net box 2, and reducing the friction between the net box 2 and the guide rod 311, avoiding the guide rod 311 from being worn and affecting the structural strength of the guide rod 311. Each group of sliding sleeves 33 is provided with multiple sleeves on the same guide rod 311 to ensure the reliability of the sliding connection between the guide rod 311 and the net box 2, and reducing the net box 2 from being separated from the guide rod 311 due to wind and waves, or causing the guide rod 311 to break.

[0027] In some embodiments of the present disclosure, reference Figure 1 and Figure 2 As shown, the lifting cage aquaculture structure based on the wind turbine single pile foundation can also include a ballast system 4, including a water pump 41 and a ballast tank 42 arranged on the cage 2. The water pump 41 is connected to the ballast tank 42 through a pipeline to control the lifting of the cage 2. The pipeline is arranged along the guide member 31 or arranged in the guide member 31, and the ballast tank 42 is used to introduce ballast water. In this way, by controlling the ballast water ratio, it is possible to achieve fine control of the lifting of the cage 2, so that the height of the cage 2 can be flexibly and accurately adjusted according to the aquaculture needs or sea conditions, and the operation is simple. At the same time, by controlling the lifting of the cage 2 by ballast water, the use of mechanical parts is reduced, thereby reducing the maintenance cost of mechanical equipment. Since the cage 2 is slidably arranged on the guide member 31, by arranging the pipeline along the guide member 31, the water pump 41 can be connected to the ballast tank 42 on the cage 2, while ensuring the safety of the pipeline. By setting the pipeline in the guide member 31, the guide member 31 can also guide the ballast water, thereby fully utilizing the space in the guide member 31, further improving the reliability of the pipeline connection, and avoiding the impact of waves on the pipeline connectivity and thus affecting the lifting and lowering of the cage 2.

[0028] In other embodiments of the present disclosure, a traction mechanism or other lifting mechanism may be provided to control the lifting and lowering of the cage 2 along the guide member 31 in the height direction, and the present disclosure does not impose any limitation on this.

[0029] In some embodiments of the present disclosure, reference Figure 2As shown, the cage 2 frame and the net 24 connected to the frame enclose a breeding area, and the frame includes an annular upper frame 21 and an annular lower frame 22 and a side frame 23 connected between the annular upper frame 21 and the annular lower frame 22. The annular upper frame 21 is composed of a hollow pipe to form a ballast tank 42 in the hollow pipe. In this way, the cage 2 frame is constructed as a hollow pipe, which reduces the overall weight of the cage 2 frame and fully utilizes the cage 2 frame structure. At the same time, since the annular upper frame 21 is composed of a hollow pipe, when the interior of the annular upper frame 21 is hollow and the cage 2 is in a floating state, the buoyancy center of the cage 2 is higher than the center of gravity, so that when the cage 2 is tilted by an external force, the buoyancy and gravity moments can restore the cage 2 to its initial equilibrium position, thereby improving the stability of the cage 2.

[0030] Among them, according to the volume and sinking depth requirements of the net box 2, only the annular outer tube 211 can be constructed as a hollow pipe, or the annular upper frame 21 and the annular lower frame 22 can be constructed as hollow pipes to form a ballast tank 42, and the present disclosure does not limit this. In addition, a separate space can be set in the net box 2 as a ballast tank 42 to allow ballast water to pass through, and the present disclosure does not limit this. In addition, the net box 2 as a whole can be a regular polygonal column structure, and the annular inner tube 212, the annular outer tube 211 and the radial tube 213 can be connected by welding to ensure the structural strength of the net box 2.

[0031] In some embodiments of the present disclosure, reference Figure 2 As shown, the annular upper frame 21 may include an annular inner tube 212, an annular outer tube 211, and a radial tube 213 connected between the annular inner tube 212 and the annular outer tube 211, and the annular inner tube 212, the annular outer tube 211 and the radial tube 213 are connected to each other. In this way, the annular outer tube 211 can be connected to the annular inner tube 212 through the radial tube 213, thereby, the annular inner tube 212, the annular outer tube 211 and the radial tube 213 can all be introduced with ballast water to ensure the amount of ballast water introduced, thereby ensuring the sinking depth of the cage 2.

[0032] In some embodiments of the present disclosure, reference Figure 2As shown, some adjacent radial tube 213 brackets can also be connected and communicated with a connecting rod 214, and the connecting rod 214 divides the area between the corresponding adjacent radial tubes 213 into an inner area 215 and an outer area 216. One of the inner area 215 and the outer area 216 covers the net 24, and the other is open. The net 24 is a two-layer net structure. In this way, the aquaculture products can be put into the open area to carry out the aquaculture operation, and the net 24 can also be easily disassembled to improve the operation efficiency. By setting the net 24 as a two-layer net structure, the space formed by the inner net 24 can be used for aquaculture, and the outer net 24 can be used to intercept floating objects and other marine organisms on the sea surface to ensure the safety of the aquaculture environment.

[0033] Among them, the outer area 216 can be opened to facilitate the placement or removal of the fish by the aquaculture personnel, thereby reducing the difficulty of operation. In addition, the net 24 can be fixed to the inner side of the net box 2 by tying, so as to carry out aquaculture activities in the water body surrounded by the net 24, or the net 24 can be detachably connected to the net box 2 by other fixing methods, which is not limited by the present disclosure.

[0034] In some embodiments of the present disclosure, reference Figure 2 As shown, the cage 2 aquaculture structure may also include a functional device, and the guide mechanism 3 includes a flange device 32 surrounding the foundation and a guide rod 311 connected to the flange device 32. The flange device 32 is located above the cage 2 and is used to install the functional device. Among them, the functional device may include a feeding system, a monitoring system, an energy storage system, and a water pump 41 and other aquaculture auxiliary equipment. By arranging the water pump 41 on the flange device 32, the reliability of the installation of the water pump 41 is ensured while shortening the supply distance of ballast water. Through the coordinated cooperation of the wind turbine and the energy storage system, integrated energy supply can be achieved, and by forming an offshore intelligent microgrid system with aquaculture energy equipment, the problem of lack of green electricity supply in deep-sea aquaculture can be solved, low-carbon emissions can be achieved in the entire aquaculture process, and sustainable development of deep-sea aquaculture can be promoted.

[0035] In other embodiments, the functional system may also include other necessary auxiliary equipment required for farming, which is not limited in the present disclosure.

[0036] Below, reference Figure 1 and Figure 2As shown, the present disclosure will combine the above-mentioned specific implementation methods to give a detailed introduction to the specific use process of the lifting cage aquaculture structure based on the wind turbine monopile foundation. The aquaculture products can be put into the cage 2 through the open area for aquaculture activities. In severe sea conditions or when the bottom aquaculture environment is better than the surface aquaculture environment, ballast water is introduced into the ballast tank 42, that is, the ballast water is controlled by the water pump 41 to enter the hollow pipe of the annular upper frame 21 along the guide rod 311. At this time, the cage 2 can slide downward along the extension direction of the guide rod 311 to sink into the lower layer. Its overall structure can be regarded as a suction cylinder-like device, thereby improving the overall stability of the wind turbine monopile foundation 1. When the aquaculture cycle is over or the net 24 is damaged, the liquid in the ballast tank 42 is completely emptied, and the cage 2 can float to the vicinity of the water surface in the height direction to carry out aquaculture operations such as taking out or replacing aquaculture products, and it is convenient to disassemble the net 24, or to deeply clean the net 24.

[0037] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0038] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0039] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A lifting cage farming structure based on a fan single pile foundation, characterized in that: include: A wind turbine monopile foundation, which is used to be inserted into the seabed and install the wind turbine; A net box, wherein the net box is mounted outside the wind turbine monopile foundation in a manner that it can be raised and lowered in height; and The guide mechanism comprises a guide member extending in the height direction, the guide member is fixedly connected to the wind turbine single pile foundation, and the net box is slidably arranged on the guide member.

2. The lifting cage aquaculture structure based on a fan single pile foundation according to claim 1 is characterized in that: The guide mechanism comprises a flange device fixed on the wind turbine monopile foundation, and the guide member comprises a plurality of guide rods, which are arranged at intervals around the circumference of the wind turbine monopile foundation and are respectively connected to the flange device.

3. The lifting cage aquaculture structure based on a fan single pile foundation according to claim 2 is characterized in that: The guide rod is a metal rod, the upper end of which is fixed to the flange device and the lower end is inserted into the seabed. There are three guide rods, which are arranged at equal intervals in the circumference of the wind turbine single pile foundation to form a three-pile conduit structure.

4. The lifting cage aquaculture structure based on a fan single pile foundation according to claim 2 is characterized in that: The flange device comprises a flange body and a plurality of radial supports, wherein the plurality of radial supports extend radially outward from the flange body and the outer ends thereof intersect the guide rods perpendicularly.

5. The lifting cage aquaculture structure based on a fan single pile foundation according to claim 2 is characterized in that: The guide rod is slidably connected with a sliding sleeve, and the sliding sleeve is fixedly connected to the outer periphery of the net box. The sliding sleeves are arranged in a plurality of groups in a circumferential direction and are arranged at intervals. Each group of sliding sleeves includes a plurality of sliding sleeves arranged at intervals along a height direction to sleeve the same guide rod.

6. The lifting cage aquaculture structure based on a fan single pile foundation according to any one of claims 1 to 5, characterized in that: The lifting cage farming structure based on the wind turbine single pile foundation also includes a ballast system, including a water pump and a ballast tank arranged on the cage. The water pump is connected to the ballast tank through a pipeline to control the lifting of the cage. The pipeline is arranged along the guide member or arranged in the guide member. The ballast tank is used to introduce ballast water.

7. The lifting cage aquaculture structure based on a fan single pile foundation according to claim 6 is characterized in that: The cage frame and the net connected to the frame enclose a breeding area. The frame includes an annular upper frame, an annular lower frame and a side frame connected between the annular upper frame and the annular lower frame. The annular upper frame is composed of a hollow pipe to form the ballast tank inside the hollow pipe.

8. The lifting cage aquaculture structure based on a fan single pile foundation according to claim 7 is characterized in that: The annular upper frame includes an annular inner tube, an annular outer tube, and a radial tube connected between the annular inner tube and the annular outer tube. The annular inner tube, the annular outer tube and the radial tube are connected to each other.

9. The lifting cage aquaculture structure based on a fan single pile foundation according to claim 8 is characterized in that: Some of the adjacent radial tube supports are also connected and communicated with a connecting rod, which divides the area between the corresponding adjacent radial tubes into an inner area and an outer area, one of the inner area and the outer area covers the net, and the other is open. The net is a two-layer net structure.

10. The lifting cage aquaculture structure based on a fan single pile foundation according to claim 1, characterized in that: The cage culture structure also includes a functional device. The guide mechanism includes a flange device surrounding a foundation and a guide rod connected to the flange device. The flange device is located above the cage and is used to install the functional device.

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