Floating type offshore wind turbine mooring system combined with aquaculture net cage

Abstract

The utility model belongs to the technical field of offshore wind power generation and mariculture, and particularly discloses a floating type offshore wind turbine mooring system combined with a culture net cage, which comprises a plurality of offshore wind turbines, a plurality of floating type wind turbine foundations, a culture net cage floating frame system and an anchoring system, the offshore wind turbine is fixedly installed above the floating type wind turbine foundation, the floating type wind turbine foundation is of a regular triangle structure, the three vertexes of the floating type wind turbine foundation are connected with one ends of second mooring chains, and the other ends of the second mooring chains are fixedly connected to a circular net cage frame. A culture net cage floating frame system is composed of a plurality of net cage frames, the net cage frames are wrapped with nettings, so that culture spaces are formed in the net cage frames, and the bottom ends of the net cage frames are connected with an anchoring system through first mooring chains; the floating type offshore wind power mooring system is combined with the deep sea aquaculture net cage, so that the project development, construction and installation cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of offshore wind power generation and offshore aquaculture, in particular to a floating offshore wind turbine mooring system combined with an aquaculture cage. Background Art

[0002] At present, my country's offshore wind power technology is developing rapidly, and the development field is gradually expanding to the open sea. At the same time, offshore wind power is ushering in the era of parity. Reducing the cost of offshore wind power generation has become a problem that needs to be solved urgently. Due to the high exchange rate of water and low pollutant content in deep and deep sea areas, the offshore fishery farming industry is also moving from shallow waters near the coast (<20m) to deep and deep sea areas offshore (>30m). However, due to the harsh sea conditions in the deep and deep sea, the cost of aquaculture cages has always been at a high level. Deep and deep sea wind power and fish farm platforms require high wind and wave resistance, the design and construction of mooring systems are difficult, and the overall cost is high.

[0003] Offshore wind power and marine aquaculture projects are both large users of the sea. Single projects often cannot fully utilize the sea space, and a large number of marine resources are idle. It can be foreseen that the comprehensive utilization of multiple marine energy sources will become the trend of marine resource development in the future. The integration of offshore wind power and offshore aquaculture construction can use the sea efficiently and scientifically, maximizing the utilization of marine resources. Utility Model Content

[0004] The purpose of the utility model is to provide a floating offshore wind turbine mooring system combined with aquaculture cages to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a floating offshore wind turbine mooring system combined with aquaculture cages, comprising a plurality of offshore wind turbines, a plurality of floating wind turbine foundations, a buoyant frame system for aquaculture cages and an anchoring system; the offshore wind turbines are fixedly installed above the floating wind turbine foundations, the floating wind turbine foundations are arranged as a regular triangle structure, the three vertices of the floating wind turbine foundations are connected to one end of a second mooring chain, the other ends of the second mooring chains are respectively fixedly connected to a circular cage frame, a plurality of cage frames constitute a buoyant frame system for aquaculture cages, the outside of the cage frame is covered with a net so that aquaculture space is formed inside the cage frame, and the bottom end of the cage frame is connected to the anchoring system through a first mooring chain.

[0006] Preferably, column buoys are provided at the three vertices of the floating wind turbine foundation, and the column buoys are fixedly connected to a second mooring chain close to the floating wind turbine foundation, for providing a vertical upward buoyancy to the second mooring chain, which is greater than the vertical downward force applied to the second mooring chain at this location.

[0007] Preferably, the column buoy is a hollow cavity, and the column buoy is composed of a steel frame, polyethylene filling foam and a polyurethane elastic shell. The polyethylene filling foam covers the steel frame, and the polyurethane elastic shell wraps the polyethylene filling foam, thereby preparing the column buoy.

[0008] Preferably, the offshore wind turbine is fixed at one of the vertices of the floating wind turbine foundation.

[0009] Preferably, a ballast tank for adjusting gravity is provided inside the column buoy, and the ballast tank controls the buoyancy of the column buoy by pumping in or out seawater. The three column buoys of the same floating wind turbine foundation have different gravity, and the gravity of the column buoy where the offshore wind turbine is provided is less than the gravity of the column buoys at the other two vertices, thereby keeping the buoyancy of the entire floating wind turbine foundation in a balanced state.

[0010] Preferably, three second mooring chains are connected to the same cage frame, and the three second mooring chains are fixedly arranged at three equal points of the circular cage frame.

[0011] Preferably, the cage frame and the floating wind turbine foundation are arranged at intervals, using a combined mooring method, and the overall plane layout is "honeycomb-shaped".

[0012] Preferably, a plurality of counterweight blocks are evenly arranged on the second mooring chain, and the counterweight blocks are solid objects with a density higher than the density of seawater.

[0013] Preferably, the anchoring system includes but is not limited to a towing anchor, a driven pile anchor, a negative pressure pile anchor, a gravity anchor and the like.

[0014] Preferably, the bottom end of the anchoring system is fixed to the seabed by anchor piles to constrain the deviation of the entire system and achieve mooring stability of the aquaculture cage floating frame system.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model adopts a combination technology of floating wind turbine mooring system and aquaculture cage, and multiple offshore wind turbines share one mooring cage, which improves the mooring utilization rate, reduces the development cost of floating offshore wind power, reduces the mooring cost of floating wind turbines, and can also use aquaculture cages for fish farming, realizing the wind-fishing complementarity of offshore resources and effectively improving the development and utilization rate of marine resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the plan layout of the utility model.

[0018] In the figure: 1. Offshore wind turbine; 2. Floating wind turbine foundation; 21. Column buoy; 3. Aquaculture cage floating frame system; 31. Cage frame; 4. Net; 5. Anchoring system; 6. First mooring chain; 7. Second mooring chain. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] See also Figure 1-2 The utility model provides a technical solution: a floating offshore wind turbine mooring system combined with aquaculture cages, comprising a plurality of offshore wind turbines 1, a plurality of floating wind turbine foundations 2, aquaculture cage buoyancy system 3 and an anchoring system 5; the offshore wind turbine 1 is fixedly installed above the floating wind turbine foundation 2, the floating wind turbine foundation 2 is arranged in an equilateral triangle structure, the three vertices of the floating wind turbine foundation 2 are connected to one end of a second mooring chain 7, the other end of the second mooring chain 7 is respectively fixedly connected to a circular cage frame 31, a plurality of cage frames 31 constitute the aquaculture cage buoyancy system 3, the outer portion of the cage frame 31 is covered with a net 4, so that aquaculture space is formed inside the cage frame 31, and the bottom end of the cage frame 31 is connected to the anchoring system 5 through a first mooring chain 6.

[0023] Furthermore, column buoys 21 are provided at the three vertices of the floating wind turbine foundation 2, and the column buoys 21 are fixedly connected to the second mooring chain 7 close to the floating wind turbine foundation 2, and are used to provide a vertical upward buoyancy to the second mooring chain 7, which is greater than the vertical downward force applied to the second mooring chain 7 here.

[0024] Furthermore, the column buoy 21 is a hollow cavity, and the column buoy 21 is composed of a steel frame, polyethylene filling foam and a polyurethane elastic shell. The polyethylene filling foam covers the steel frame, and the polyurethane elastic shell wraps the polyethylene filling foam, thereby preparing the column buoy 21.

[0025] Furthermore, the offshore wind turbine 1 is fixed at one of the vertices of the floating wind turbine foundation 2 .

[0026] Furthermore, a ballast tank for adjusting gravity is provided inside the column buoy 21, and the ballast tank controls the buoyancy of the column buoy 21 by pumping in or out seawater. The three column buoys 21 of the same floating wind turbine foundation 2 have different gravity. The gravity of the column buoy 21 where the offshore wind turbine 1 is provided is less than the gravity of the column buoys 21 at the other two vertices, thereby keeping the buoyancy of the entire floating wind turbine foundation 2 in a balanced state.

[0027] Furthermore, three second mooring chains 7 are connected to the same cage frame 31 , and the three second mooring chains 7 are fixedly arranged at three equal points of the circular cage frame 31 .

[0028] Furthermore, the cage frame 31 is arranged at intervals from the floating wind turbine foundation 2, and a combined mooring method is adopted, and the overall plane layout is "honeycomb-shaped". The specific connection is as shown in the attached Figure 2 shown.

[0029] Furthermore, a plurality of counterweight blocks are evenly arranged on the second mooring chain 7, and the counterweight blocks are solid objects with a density higher than that of seawater.

[0030] Furthermore, the anchoring system 5 includes but is not limited to a towing anchor, a driven pile anchor, a negative pressure pile anchor, a gravity anchor, and the like.

[0031] Furthermore, the bottom end of the anchoring system 5 is fixed to the seabed by anchor piles to constrain the deviation of the entire system and achieve mooring stability of the aquaculture cage floating frame system 3.

[0032] Working principle: The utility model provides a floating offshore wind turbine mooring system combined with aquaculture cages, comprising a plurality of offshore wind turbines 1, a plurality of floating wind turbine foundations 2, aquaculture cage floating frame system 3 and an anchoring system 5; the offshore wind turbine 1 is fixedly installed above the floating wind turbine foundation 2, the floating wind turbine foundation 2 is arranged in an equilateral triangle structure, the three vertices of the floating wind turbine foundation 2 are connected to one end of a second mooring chain 7, the other end of the second mooring chain 7 is respectively fixedly connected to a circular cage frame 31, a plurality of cage frames 31 form aquaculture cage floating frame system 3, the outer surface of the cage frame 31 is covered with a net 4, so that the cage frame 31 is Aquaculture space is formed in the cage frame 31, and the bottom end of the cage frame 31 is connected to the anchor system 5 through the first mooring chain 6; a number of offshore wind turbines 1 generate electrical energy under the action of wind, most of which is sent to the power grid through the transmission system for use by land users, and a small part is used to provide electricity for the aquaculture system arranged in the aquaculture cage floating frame system 3. The utility model adopts the combined technology of floating wind turbine mooring system and aquaculture cage. Multiple offshore wind turbines 1 share one mooring cage, which improves the mooring utilization rate, reduces the development cost of floating offshore wind power, reduces the mooring cost of floating wind turbines, and can also use aquaculture cages for fish farming, realizing the wind-fishing complementarity of marine resources and effectively improving the development and utilization rate of marine resources.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A floating offshore wind turbine mooring system combined with aquaculture cages, characterized by: The invention comprises a plurality of offshore wind turbines (1), a plurality of floating wind turbine foundations (2), a culture cage floating frame system (3) and an anchoring system (5); the offshore wind turbines (1) are fixedly installed above the floating wind turbine foundations (2); the floating wind turbine foundations (2) are arranged in an equilateral triangle structure; three vertices of the floating wind turbine foundations (2) are connected to one end of a second mooring chain (7); the other ends of the second mooring chains (7) are respectively fixedly connected to a circular cage frame (31); a plurality of cage frames (31) form a culture cage floating frame system (3); the outside of the cage frame (31) is covered with a net (4) so ​​that a culture space is formed inside the cage frame (31); the bottom end of the cage frame (31) is connected to the anchoring system (5) via a first mooring chain (6).

2. A floating offshore wind turbine mooring system combined with aquaculture cage according to claim 1, characterized in that: Column buoys (21) are arranged at the three vertices of the floating wind turbine foundation (2). The column buoys (21) are fixedly connected to a second mooring chain (7) close to the floating wind turbine foundation (2) and are used to provide a vertical upward buoyancy to the second mooring chain (7), wherein the buoyancy is greater than the vertical downward force applied to the second mooring chain (7) at this location.

3. A floating offshore wind turbine mooring system combined with aquaculture cage according to claim 2, characterized in that: The column buoy (21) is a hollow cavity, and is composed of a steel frame, polyethylene filling foam and a polyurethane elastic shell. The polyethylene filling foam covers the steel frame, and the polyurethane elastic shell wraps the polyethylene filling foam, thereby preparing the column buoy (21).

4. The floating offshore wind turbine mooring system combined with aquaculture cage according to claim 2, characterized in that: The offshore wind turbine (1) is fixed at one of the vertices of the floating wind turbine foundation (2).

5. The floating offshore wind turbine mooring system combined with aquaculture cage according to claim 2, characterized in that: A ballast tank for adjusting gravity is arranged inside the column buoy (21). The ballast tank controls the buoyancy of the column buoy (21) by pumping in or out seawater. The three column buoys (21) of the same floating wind turbine foundation (2) have different gravity. The gravity of the column buoy (21) where the offshore wind turbine (1) is arranged is smaller than the gravity of the column buoys (21) at the other two vertices, thereby keeping the buoyancy of the entire floating wind turbine foundation (2) in a balanced state.

6. The floating offshore wind turbine mooring system combined with aquaculture cage according to claim 1, characterized in that: Three second mooring chains (7) are connected to the same net cage frame (31), and the three second mooring chains (7) are fixedly arranged at three equal points of the circular net cage frame (31).

7. The floating offshore wind turbine mooring system combined with aquaculture cage according to claim 1, characterized in that: The cage frame (31) and the floating wind turbine foundation (2) are arranged at intervals, using a combined mooring method, and the overall plan layout is in a "honeycomb" shape.

8. The floating offshore wind turbine mooring system combined with aquaculture cage according to claim 1, characterized in that: A plurality of counterweight blocks are evenly arranged on the second mooring chain (7), and the counterweight blocks are solid objects with a density higher than the density of seawater.

9. The floating offshore wind turbine mooring system combined with aquaculture cage according to claim 1, characterized in that: The anchoring system (5) includes but is not limited to the use of towing anchors, driven pile anchors, negative pressure pile anchors, gravity anchors, etc.

10. The floating offshore wind turbine mooring system combined with aquaculture cage according to claim 1, characterized in that: The bottom end of the anchoring system (5) is fixed to the seabed via anchor piles, and is used to constrain the deviation of the entire system, thereby achieving mooring stability of the aquaculture cage floating frame system (3).

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