Floating fence device of offshore wind plant

Abstract

The utility model discloses a floating fence device of an offshore wind power plant, and belongs to the technical field of offshore wind power plants, the floating fence device comprises a first-layer fence, and the first-layer fence is arranged on a wind turbine generator on the periphery of the wind power plant; the first-layer fence comprises a plurality of sections of first connecting devices, and each section of first connecting device is connected with two adjacent unit point positions; the first connecting device is used for preventing floating objects on the sea from entering the wind power plant. In the application, the first layer of fence and the first connecting device are arranged and connected between the point positions of the wind turbine generator sets at the outermost periphery of the wind power plant, so that offshore floating objects outside the wind power plant can be blocked and prevented from entering the wind power plant, collision to the internal wind turbine generator sets is avoided, and the safety of internal facilities of the wind power plant is ensured.

Description

A floating fence device for offshore wind farms Technical Field

[0001] This application relates to the field of offshore wind farm technology, and more specifically, to a floating fence device for offshore wind farms. Background Technology

[0002] Due to the complex and unpredictable weather and wave conditions at sea, if a vessel malfunctions or goes out of control, it is highly likely to stray into a nearby offshore wind farm, colliding with wind turbines and causing serious accidents such as turbine damage or even collapse. Furthermore, large floating objects drift freely in the ocean under the influence of ocean currents, and these objects may also collide with offshore wind turbines.

[0003] Currently, some researchers have proposed the concept of electronic fences, which involves pre-burying signal lines at the edge of a wind farm to issue warnings when nearby vessels are detected. However, electronic fences can only handle manually operated vessels. They are ineffective against drifting boats that are out of control due to weather or engine failure, or other large floating objects freely drifting at sea, leaving them unattended and posing significant safety hazards. Summary of the Invention

[0004] This application aims to provide a floating fence device for offshore wind farms, which addresses the problem in the prior art where floating objects at sea can easily enter wind farms and cause safety accidents.

[0005] A floating fence device for an offshore wind farm, applied to an offshore wind farm, includes: a first layer fence, the first layer fence being installed on the wind turbine units on the periphery of the wind farm; the first layer fence includes multiple segments of first connecting devices, each segment of the first connecting device connecting two adjacent turbine units; the first connecting devices are used to prevent floating objects from entering the interior of the wind farm.

[0006] Based on the aforementioned technical means, by setting up a first-layer fence around the wind farm and connecting the first connecting device between the outermost turbine locations of the wind farm, uncontrollable floating objects outside the wind farm can be intercepted, preventing them from entering the wind farm and causing collisions with the turbines, thus ensuring the safety of the facilities inside the wind farm.

[0007] Optionally, the length of the first connecting device is greater than the straight-line distance between the two adjacent unit locations connected to it.

[0008] According to the above technical means, when the two ends of the first connecting device are connected to the two unit locations respectively, the middle part of the first connecting device forms a certain arc, which can swing or deform to a certain extent with the fluctuation of the waves, thereby playing a buffering role and helping to improve the overall impact resistance of the fence.

[0009] Optionally, a first entrance / exit is provided on the first layer of the fence, and the first connecting device is not provided between the two unit locations corresponding to the first entrance / exit.

[0010] Based on the aforementioned technical means, by setting up a first entrance and exit, it is convenient for maintenance vessels to enter and exit the wind farm, and to facilitate the inspection and maintenance of the internal units.

[0011] Optionally, the first inlet / outlet is located on the side of the wind farm closer to the coast.

[0012] Based on the aforementioned technical means, the first entrance and exit is located on the side of the wind farm closer to the coast, which can shorten the travel distance for maintenance vessels to enter and exit the wind farm, thereby saving maintenance costs.

[0013] Optionally, the floating fence device further includes a second fence layer located outside the first fence layer; the second fence layer includes multiple floating platforms and multiple sections of second connecting devices; the multiple floating platforms are spaced apart and connected to the seabed, and each section of the second connecting device connects two adjacent floating platforms.

[0014] According to the above technical means, by setting up a second layer of fence, the protection of the wind farm can be further strengthened. The floating platform can limit the relative position of the second layer of fence and the wind farm. Each second connecting device is connected between two adjacent floating platforms, which can intercept floating objects outside the wind farm and prevent them from entering the wind farm and colliding with the turbines.

[0015] Optionally, the second layer of fencing is located on the side of the wind farm away from the coast.

[0016] Based on the aforementioned technical means, the second layer of fencing is set on the side of the wind farm away from the coast. For nearshore wind farms, this can further enhance the protection of the area on the side of the wind farm away from the coast that is prone to being hit by floating objects.

[0017] Optionally, the second layer of fencing is arranged around the circumference of the wind farm.

[0018] Based on the aforementioned technical means, a second layer of fencing is set up around the wind farm. For wind farms in offshore areas or those with dense cargo transportation around them, floating objects can be blocked from all directions, further strengthening protection and improving the safety of the wind farm.

[0019] Optionally, a second entrance / exit is provided on the second layer of the fence, and no second connecting device is provided between the two floating platforms corresponding to the second entrance / exit.

[0020] Based on the aforementioned technical means, by setting up a second entrance and exit, it is possible to facilitate the entry and exit of maintenance vessels into and out of the wind farm, and to facilitate the inspection and maintenance of the internal units.

[0021] Optionally, the second inlet / outlet is positioned corresponding to the first inlet / outlet.

[0022] Based on the aforementioned technical means, the location of the second inlet / outlet corresponding to the first inlet / outlet can simplify the path for maintenance vessels to enter and exit the wind farm, shorten the travel distance, and help reduce maintenance costs.

[0023] Optionally, the length of the second connecting device is greater than the straight-line distance between the two floating platforms connected to it.

[0024] According to the above-mentioned technical means, when the two ends of the second connecting device are connected to the two floating platforms respectively, the middle part of the second connecting device forms a certain arc, which can swing or deform to a certain extent with the fluctuation of the waves, thereby playing a buffering role and helping to improve the overall impact resistance of the fence.

[0025] Optionally, both the first connecting device and the second connecting device include a cable and a plurality of floats, wherein the cable includes a submarine cable and the plurality of floats are distributed at intervals on the cable.

[0026] Based on the above technical means, the cable can connect two adjacent unit locations or two adjacent floating platforms, thereby blocking floating objects. The float can provide a certain buoyancy to the cable, allowing it to float on the sea surface.

[0027] Optionally, the outer surface of the float is coated with a warning label.

[0028] Based on the aforementioned technical means, warning signs are coated on the outer surface of the float to remind the drivers of passing ships to avoid accidentally entering the wind farm.

[0029] Optionally, a strain sensor is installed in the cable, the strain sensor is connected to the cable, and the cable is connected to the wind farm control center; the strain sensor is used to detect the strain data of the cable, and the cable is used to transmit the strain data to the wind farm control center.

[0030] Based on the aforementioned technical means, real-time monitoring of the cable stress can be achieved through strain sensors and the wind farm control center, thereby understanding the degree of impact and enabling timely countermeasures.

[0031] Optionally, the floating platform includes a float, mooring chains, and anchor piles; the anchor piles are fixed to the seabed, and the float is connected to the anchor piles via multiple mooring chains; the float is provided with mooring holes, and the float is connected to the cables through the mooring holes.

[0032] Based on the aforementioned technical means, with the installation of floating bodies, mooring chains, and anchor piles, the floating platform can establish a relatively fixed position at sea, and in most cases, it will not move significantly, thus ensuring the stability of the second layer of fencing.

[0033] Optionally, the floating platform further includes a communication antenna and a sensor and data storage module disposed on the floating body; the sensor and data storage module is connected to the communication antenna, the communication antenna is connected to the wind farm control center, the sensor and data storage module is used to detect wind speed and wave data, and the communication antenna is used to receive the wind speed and wave data and send the wind speed and wave data to the wind farm control center.

[0034] Based on the aforementioned technical means, it is possible to remotely monitor the wind and wave conditions at sea, so as to take protective measures in advance, ensure the interception effect of floating objects, and extend the service life of the fence.

[0035] Beneficial effects:

[0036] The floating fencing device for offshore wind farms described in this application is applied to offshore wind farms and includes a first-layer fencing, which is installed on the wind turbine units around the perimeter of the wind farm. The first-layer fencing includes multiple segments of first connecting devices, each segment connecting two adjacent turbine units. The first connecting devices are used to prevent floating objects from entering the wind farm. In this application, by setting up a first-layer fencing around the wind farm and connecting the first connecting devices between the outermost turbine units, uncontrollable floating objects outside the wind farm can be intercepted, preventing them from entering the wind farm. This effectively avoids large floating objects colliding with the turbine units inside the wind farm. The structure is simple, and while saving costs, it ensures the safety of facilities inside the wind farm. Attached Figure Description

[0037] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 is a structural schematic diagram of the floating fence device for offshore wind farms proposed in Embodiment 1 of this application;

[0039] Figure 2 is a schematic diagram of the structure of a floating platform according to an embodiment of this application;

[0040] Figure 3 is a structural schematic diagram of the floating fence device for offshore wind farms proposed in Embodiment 2 of this application.

[0041] Explanation of reference numerals in the attached figures:

[0042] 1. First layer of fencing; 11. First connecting device; 12. First entrance / exit; 2. Second layer of fencing; 21. Floating platform; 211. Floating body; 212. Mooring hole; 213. Mooring chain; 214. Anchor pile; 215. Communication antenna; 216. Sensor and data storage module; 22. Second connecting device; 23. Second entrance / exit; 31. Cable; 32. Float; 41. Wind turbine units on the periphery of the wind farm; 42. Wind turbine units inside the wind farm; 51. Coastline; 52. Seabed. Detailed Implementation

[0043] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0044] In recent years, my country's offshore wind power development has been rapid, with continuously increasing installed capacity. Numerous wind farms have been established or are planned in coastal areas rich in wind resources. my country's ports are busy with cargo transport, and a large number of ships pass near wind farms daily. Due to the complex and unpredictable weather and wave conditions at sea, if a ship malfunctions or goes out of control, it is highly likely to accidentally enter a nearby offshore wind farm, colliding with wind turbines and causing serious accidents such as damage or even collapse. Furthermore, large floating objects drift freely in the ocean under the influence of ocean currents, and these objects may also collide with offshore wind turbines.

[0045] Currently, the vast majority of offshore wind farms in my country lack any obstructions. Some developers have proposed the concept of electronic fences, which involve pre-burying signal lines at the edge of the wind farm to issue warnings when nearby vessels are detected. However, electronic fences can only handle manually operated vessels. They are ineffective against drifting boats that are out of control due to weather or engine malfunctions, or other large floating objects, allowing them to enter the wind farm and posing significant safety hazards.

[0046] In view of this, this application proposes a floating fence device for offshore wind farms.

[0047] Example 1

[0048] A floating fence device for an offshore wind farm, applied to an offshore wind farm, includes: a first-layer fence 1, the first-layer fence 1 being installed on wind turbine units 41 on the periphery of the wind farm; the first-layer fence 1 including multiple segments of first connecting devices 11, each segment of the first connecting device 11 connecting two adjacent turbine unit locations; the first connecting devices 11 being used to prevent floating objects from entering the interior of the wind farm.

[0049] Specifically, see Figure 1, which shows the structure of a floating fence for a near-shore wind farm. The first fence 1 surrounds the outer perimeter of the wind farm, which contains multiple arrayed wind turbine units. The first fence 1 includes multiple first connecting devices 11, which are connected between two adjacent turbine locations on the outermost edge of the wind farm. This creates a barrier around the wind farm. When there are out-of-control vessels or free-floating objects near the wind farm, the first connecting devices 11 can intercept them and prevent them from entering the wind farm. This effectively avoids collisions between various uncontrollable floating objects and the turbine units inside the wind farm, ensuring the safety of the facilities inside the wind farm.

[0050] Optionally, the length of the first connecting device 11 is greater than the straight-line distance between the two adjacent unit locations connected to it.

[0051] Specifically, due to the need to withstand the continuous and strong impact of sea waves, the length of each section of the first connecting device 11 is preferably set to be greater than the straight-line distance between the two adjacent unit locations connected to it. In this way, when the two ends of the first connecting device 11 are connected to the two unit locations respectively, the middle part of the first connecting device 11 forms a certain arc, which can swing or deform to a certain extent with the fluctuation of the waves, thereby playing a buffering role, absorbing some of the energy of the wind and waves, and helping to improve the overall impact resistance of the fence.

[0052] In practical applications, the length of each first connecting device 11 should not be too long. Excessive length may reduce the blocking effect on floating objects, waste materials, and increase construction costs. Preferably, the length of the first connecting device 11 is 3%-5% greater than the straight-line distance between two adjacent unit locations. This ensures both resistance to wind and waves and the blocking effect on floating objects.

[0053] Optionally, a first entrance / exit 12 is provided on the first layer of fence 1, and the first connecting device 11 is not provided between the two unit locations corresponding to the first entrance / exit 12.

[0054] Specifically, in order to facilitate the inspection and maintenance of the wind farm's internal turbines by the operation and maintenance vessels, a first entrance and exit 12 is set on the first layer of the fence 1. No first connecting device 11 is set between the two turbine locations corresponding to the first entrance and exit 12. Therefore, the operation and maintenance vessels can enter and exit the wind farm through the first entrance and exit 12.

[0055] Optionally, the first inlet / outlet 12 is located on the side of the wind farm closer to the coastline 51.

[0056] Specifically, referring to Figure 1, in this embodiment, the first inlet / outlet 12 is located on the side of the wind farm closer to the coast 51, which can shorten the travel distance of maintenance vessels entering and leaving the wind farm, thereby saving maintenance costs.

[0057] In addition, for the wind farm perimeter units in the first layer of fence 1, since they are not protected by the fence, additional anti-collision barriers can be installed on their foundation platforms to improve their safety.

[0058] Optionally, the floating fence device further includes a second fence 2, which is located outside the first fence 1 and is positioned on the side of the wind farm away from the coastline 51.

[0059] Specifically, for offshore wind farms, the side furthest from the coast 51 is at greater risk of being struck by out-of-control vessels or large floating objects. Therefore, in this embodiment, a second layer of fencing 2 is installed on the side of the wind farm furthest from the coast 51. The second layer of fencing 2 is located outside the first layer of fencing 1, which can further enhance the protection of the wind farm.

[0060] Optionally, the second layer of the fence 2 includes multiple floating platforms 21 and multiple sections of second connecting devices 22; the multiple floating platforms 21 are spaced apart, the floating platforms 21 are connected to the seabed 52, and each section of the second connecting device 22 connects two adjacent floating platforms 21.

[0061] Referring to Figure 1, the second-layer fence 2 includes multiple floating platforms 21 and multiple sections of second connecting devices 22. The floating platforms 21 are connected to the seabed 52 to limit the relative position of the second-layer fence 2 and the wind farm. The multiple floating platforms 21 are distributed at intervals on the side of the wind farm away from the coast 51. Each section of the second connecting device 22 is connected between two adjacent floating platforms 21 and can intercept floating objects outside the wind farm to prevent them from entering the wind farm and colliding with the turbines.

[0062] In practical applications, the number and spacing of the floating platforms 21 should be reasonably set according to the protection requirements. The spacing between two adjacent floating platforms 21 should not be too large, as this may reduce the overall structural strength of the fence and increase the length of each section of the second connecting device 22, affecting the blocking effect on floating objects. At the same time, the spacing between the floating platforms 21 should not be too small, as this would require increasing the number of floating platforms 21, thus increasing construction costs. Preferably, in this embodiment, the distance between two adjacent floating platforms 21 is set to 5km-8km, which ensures good protection while saving construction costs.

[0063] Referring to Figure 1, preferably, in order to further save construction costs, the second connecting device 22 at the end of the second-layer fence 2 can be connected to the wind turbine 41 on the periphery of the wind farm. This can not only ensure the stability and reliability of the installation of the second-layer fence 2, but also save the number of floating platforms 21, making it more economical and practical.

[0064] Optionally, the length of the second connecting device 22 is greater than the straight-line distance between the two floating platforms 21 connected to it.

[0065] Specifically, due to the need to withstand the continuous and strong impact of sea waves, the length of each section of the second connecting device 22 is preferably set to be greater than the straight-line distance between the two adjacent floating platforms 21 connected to it. In this way, when the two ends of the second connecting device 22 are connected to the two floating platforms 21 respectively, the middle part of the second connecting device 22 forms a certain arc, which can swing or deform to a certain extent with the fluctuation of the waves, thereby playing a buffering role, absorbing some of the energy of the waves, and helping to improve the overall impact resistance of the fence.

[0066] In practical applications, the length of each second connecting device 22 should not be too long. Excessive length may reduce the blocking effect on floating objects, waste materials, and increase construction costs. Preferably, the length of the first connecting device 11 is 3%-5% greater than the straight-line distance between two adjacent floating platforms 21, ensuring both resistance to wind and waves and the blocking effect on floating objects.

[0067] Optionally, both the first connecting device 11 and the second connecting device 22 include a cable 31 and a plurality of floats 32, wherein the cable 31 includes a submarine cable and the plurality of floats 32 are distributed at intervals on the cable 31.

[0068] Specifically, in this embodiment, the first connecting device 11 and the second connecting device 22 can adopt the same structure, both including a cable 31 and multiple floats 32. The cable 31 can be a conventional submarine cable. The innermost layer of the submarine cable is made of copper wire, which can be used for current and data transmission. The outer layer of the wire is composed of multiple strands of high-strength alloy material, which can provide mechanical protection for the cable and enhance its tensile and compressive strength. The outermost layer is wrapped with a corrosion-resistant polyvinyl chloride shell, which can protect the cable from seawater corrosion and ensure the long-term stability of the cable in seawater. Multiple floats 32 are distributed at certain intervals on the cable 31. The floats 32 float on the sea surface and can provide a certain buoyancy to the cable 31, allowing the cable 31 to float on the sea surface.

[0069] Preferably, in order to ensure that the cable 31 can float on the sea surface and avoid the cable 31 increasing the load on the floating platform 21, the total buoyancy of the float 32 per unit length should be greater than 8%-15% of the weight of the cable 31.

[0070] Optionally, the outer surface of the float 32 is coated with a warning label.

[0071] Furthermore, in this embodiment, warning markings, such as yellow and black stripes, can be coated on the outer surface of the float 32 to serve as a warning and to remind the drivers of passing ships to be aware of the dangers and prevent the ships from accidentally entering the wind farm.

[0072] Optionally, the floating platform 21 includes a float 211, mooring chains 213, and anchor piles 214; the anchor piles 214 are fixed to the seabed 52, and the float 211 is connected to the anchor piles 214 by multiple mooring chains 213; the float 211 is provided with a mooring hole 212, and the float 211 is connected to the cable 31 through the mooring hole 212.

[0073] Specifically, the function of the floating platform 21 is to establish a relatively fixed position at sea to restrict the installation location of the second-layer railing 2. Referring to Figure 2, in this embodiment, the floating platform 21 includes a float 211, mooring chains 213, and anchor piles 214. The anchor piles 214 are fixed to the seabed 52. The float 211 provides the majority of the buoyancy. The lower part of the float 211 is connected to the anchor piles 214 via multiple mooring chains 213, thus connecting the float 211 to the seabed 52 and ensuring that the floating platform does not move significantly under most wind and wave conditions, guaranteeing its stability. Mooring holes 212 are provided on both sides of the float 211, through which the cables 31 on both sides can be easily connected.

[0074] Optionally, a strain sensor is installed in the cable 31, the strain sensor is connected to the cable 31, and the cable 31 is connected to the wind farm control center; the strain sensor is used to detect the strain data of the cable 31, and the cable 31 is used to transmit the strain data to the wind farm control center.

[0075] Specifically, a strain sensor is installed in the cable 31, and the strain sensor is connected to the cable 31. The cable 31 is connected to the wind farm control center. The strain sensor can monitor the load on the cable 31 in real time. The strain data can be transmitted to the wind farm control center through the wires inside the cable 31. The wind farm control center can then detect abnormal strain data inside the cable 31 and remotely monitor the impact level so that timely countermeasures can be taken.

[0076] Optionally, the floating platform 21 further includes a communication antenna 215 and a sensor and data storage module 216 disposed on the float 211; the sensor and data storage module 216 is connected to the communication antenna 215, the communication antenna 215 is connected to the wind farm control center, the sensor and data storage module 216 is used to detect wind speed and wave data, and the communication antenna 215 is used to receive the wind speed and wave data and send the wind speed and wave data to the wind farm control center.

[0077] Specifically, referring to Figure 2, the floating platform 21 also includes a communication antenna 215 and a sensor and data storage module 216 installed on the float 211. The sensor and data storage module 216 can detect data such as sea wind speed and wave height, wavelength, and wave period. The sensor and data storage module 216 is connected to the communication antenna 215, which is connected to the wind farm control center. The communication antenna 215 can receive wind speed and wave data and send this data to the wind farm control center. In turn, the wind farm control center can monitor the sea wind and wave conditions in real time so as to take protective measures in advance, such as reinforcing the fence structure and adjusting the tension of the cable 31, to ensure the interception effect of floating objects, prevent the fence from being damaged in strong winds and waves, and extend the service life of the fence.

[0078] Preferably, the cable 31 of the second-layer fence 2 can also be connected to the external power supply of the wind farm. At the same time, the cable 31 is connected to the communication antenna 215 and the sensor and data storage module 216, which can realize the power supply of the communication antenna 215 and the sensor and data storage module 216 of the floating platform 21.

[0079] In this embodiment, the remote monitoring and management of the floating fence device using sensors and the wind farm control center is a technology known to those skilled in the art and will not be described in detail here.

[0080] The floating fence device provided in this embodiment will deform when it is hit by a large floating object at sea. The cable 31 can block the floating object from entering the wind farm to a certain extent. At the same time, the wind farm control center will monitor the abnormal strain data inside the cable 31. Through the data, the impact degree can be monitored remotely and the specific measures that need to be taken can be determined. It can effectively ensure the safety of the facilities inside the wind farm while saving costs.

[0081] The floating fence device for offshore wind farms proposed in this embodiment can be applied to wind farms in near-shore areas. It effectively prevents out-of-control vessels and large floating objects that are freely floating at sea from entering the wind farm, avoiding collisions with the turbine platform and ensuring the structural safety of the wind turbine.

[0082] Example 2

[0083] A floating fencing device for an offshore wind farm, applied to an offshore wind farm, includes: a first-layer fencing 1, which is installed on wind turbine units 41 around the perimeter of the wind farm; the first-layer fencing 1 includes multiple segments of first connecting devices 11, each segment of the first connecting device 11 connecting two adjacent turbine units; the first connecting devices 11 are used to prevent floating objects from entering the interior of the wind farm. The floating fencing device also includes a second-layer fencing 2, which is located outside the first-layer fencing 1 and is arranged around the perimeter of the wind farm.

[0084] Specifically, see Figure 2, which shows the structure of a floating fence device for a wind farm near a deep-sea area or a sea area with intensive fishing and cargo transportation activities. It includes a first fence 1 and a second fence 2. The first fence 1 is set around the outer perimeter of the wind farm, which has multiple wind turbine units distributed in an array. The first fence 1 includes multiple first connecting devices 11, which are connected between two adjacent turbine units on the outermost edge of the wind farm, forming the first barrier on the perimeter of the wind farm. This barrier can intercept external floating objects and prevent them from entering the wind farm.

[0085] The second-layer fence 2 is set outside the first-layer fence 1. Unlike the method in Embodiment 1 where it is only set on the side away from the coast 51, in this embodiment, since the wind farm is located in the open sea or near the sea area with dense fishing and cargo transportation activities, there is a greater risk of being hit by out-of-control ships or large floating objects around the wind farm. Therefore, in this embodiment, the second-layer fence 2 is set around the perimeter of the wind farm to form a second barrier. It can intercept and block ships or floating objects outside the wind farm from all directions, preventing them from entering the wind farm and further ensuring the safety of the facilities inside the wind farm.

[0086] Optionally, the second layer of the fence 2 includes multiple floating platforms 21 and multiple sections of second connecting devices 22; the multiple floating platforms 21 are spaced apart, the floating platforms 21 are connected to the seabed 52, and each section of the second connecting device 22 connects two adjacent floating platforms 21.

[0087] Referring to Figure 3, the second-layer fence 2 includes multiple floating platforms 21 and multiple sections of second connecting devices 22. The floating platforms 21 are connected to the seabed 52 to limit the relative position of the second-layer fence 2 and the wind farm. The multiple floating platforms 21 are distributed at intervals along the circumference of the wind farm. Each section of second connecting device 22 is connected between two adjacent floating platforms 21, which can intercept floating objects outside the wind farm and prevent them from entering the wind farm and colliding with the turbines.

[0088] In practical applications, the number and spacing of the floating platforms 21 should be reasonably set according to the protection requirements. The spacing between two adjacent floating platforms 21 should not be too large, as this may reduce the overall structural strength of the fence and increase the length of each section of the second connecting device 22, affecting the blocking effect on floating objects. At the same time, the spacing between the floating platforms 21 should not be too small, as this would require increasing the number of floating platforms 21, thus increasing construction costs. Preferably, in this embodiment, the distance between two adjacent floating platforms 21 is set to 5km-8km, which ensures good protection while saving construction costs.

[0089] Optionally, the length of the first connecting device 11 is greater than the straight-line distance between the two adjacent unit locations connected to it.

[0090] Specifically, due to the need to withstand the continuous and strong impact of sea waves, the length of each section of the first connecting device 11 is preferably set to be greater than the straight-line distance between the two adjacent unit locations connected to it. In this way, when the two ends of the first connecting device 11 are connected to the two unit locations respectively, the middle part of the first connecting device 11 forms a certain arc, which can swing or deform to a certain extent with the fluctuation of the waves, thereby playing a buffering role, absorbing some of the energy of the wind and waves, and helping to improve the overall impact resistance of the fence.

[0091] In practical applications, the length of each first connecting device 11 should not be too long. Excessive length may reduce the blocking effect on floating objects, waste materials, and increase construction costs. Preferably, the length of the first connecting device 11 is 3%-5% greater than the straight-line distance between two adjacent unit locations. This ensures both resistance to wind and waves and the blocking effect on floating objects.

[0092] Optionally, the length of the second connecting device 22 is greater than the straight-line distance between the two floating platforms 21 connected to it.

[0093] Similarly, in this embodiment, the length of the second connecting device 22 is greater than the straight-line distance between the two floating platforms 21 connected to it. When the two ends of the second connecting device 22 are connected to the two floating platforms 21 respectively, the middle part of the second connecting device 22 forms a certain arc, which can swing or deform to a certain extent with the fluctuation of the waves, thereby playing a buffering role and improving the overall impact resistance of the fence.

[0094] Preferably, the length of the second connecting device 22 is 3%-5% greater than the straight-line distance between two adjacent floating platforms 21, which can ensure both the performance of resisting wind and waves and the blocking effect on floating objects.

[0095] Optionally, the first layer of the fence 1 is provided with a first entrance / exit 12, and the first connecting device 11 is not provided between the two unit locations corresponding to the first entrance / exit 12; the second layer of the fence 2 is provided with a second entrance / exit 23, and the second connecting device 22 is not provided between the two floating platforms 21 corresponding to the second entrance / exit 23.

[0096] Specifically, in order to facilitate the inspection and maintenance of the turbines inside the wind farm by the operation and maintenance vessels, a first entrance and exit 12 is set on the first layer of the fence 1. No first connecting device 11 is set between the two turbine locations corresponding to the first entrance and exit 12. A second entrance and exit 23 is set on the second layer of the fence 2. No second connecting device 22 is set between the two floating platforms 21 corresponding to the second entrance and exit 23. In this way, the operation and maintenance vessels can enter and exit the wind farm through the first entrance and exit 12 and the second entrance and exit 23.

[0097] Optionally, the first inlet / outlet 12 and the second inlet / outlet 23 are both located on the side of the wind farm closest to the coastline 51.

[0098] Specifically, referring to Figure 3, in this embodiment, the first inlet / outlet 12 and the second inlet / outlet 23 are located on the side of the wind farm closer to the coastline 51. This shortens the travel distance for maintenance vessels to enter and exit the wind farm, thereby saving maintenance costs. Preferably, the second inlet / outlet 23 corresponds to the position of the first inlet / outlet 12, which simplifies the travel path of maintenance vessels to the greatest extent, thereby shortening the travel distance, improving the convenience of maintenance, and further saving maintenance costs.

[0099] Optionally, both the first connecting device 11 and the second connecting device 22 include a cable 31 and a plurality of floats 32, wherein the cable 31 includes a submarine cable and the plurality of floats 32 are distributed at intervals on the cable 31.

[0100] Specifically, in this embodiment, the first connecting device 11 and the second connecting device 22 can adopt the same structure, both including a cable 31 and multiple floats 32. The cable 31 can be a conventional submarine cable. The innermost layer of the submarine cable is made of copper wire, which can be used for current and data transmission. The outer layer of the wire is composed of multiple strands of high-strength alloy material, which can provide mechanical protection for the cable and enhance its tensile and compressive strength. The outermost layer is wrapped with a corrosion-resistant polyvinyl chloride shell, which can protect the cable from seawater corrosion and ensure the long-term stability of the cable in seawater. Multiple floats 32 are distributed at certain intervals on the cable 31. The floats 32 float on the sea surface and can provide a certain buoyancy to the cable 31, allowing the cable 31 to float on the sea surface.

[0101] Preferably, in order to ensure that the cable 31 can float on the sea surface and avoid the cable 31 increasing the load on the floating platform 21, the total buoyancy of the float 32 per unit length should be greater than 8%-15% of the weight of the cable 31.

[0102] Optionally, the outer surface of the float 32 is coated with a warning label.

[0103] Furthermore, in this embodiment, warning markings, such as yellow and black stripes, can be coated on the outer surface of the float 32 to serve as a warning and to remind the drivers of passing ships to be aware of the dangers and prevent the ships from accidentally entering the wind farm.

[0104] Optionally, the floating platform 21 includes a float 211, mooring chains 213, and anchor piles 214; the anchor piles 214 are fixed to the seabed 52, and the float 211 is connected to the anchor piles 214 by multiple mooring chains 213; the float 211 is provided with a mooring hole 212, and the float 211 is connected to the cable 31 through the mooring hole 212.

[0105] Specifically, the function of the floating platform 21 is to establish a relatively fixed position at sea to restrict the installation location of the second-layer railing 2. Referring to Figure 2, in this embodiment, the floating platform 21 includes a float 211, mooring chains 213, and anchor piles 214. The anchor piles 214 are fixed to the seabed 52. The float 211 provides the majority of the buoyancy. The lower part of the float 211 is connected to the anchor piles 214 via multiple mooring chains 213, thus connecting the float 211 to the seabed 52 and ensuring that the floating platform does not move significantly under most wind and wave conditions, guaranteeing its stability. Mooring holes 212 are provided on both sides of the float 211, through which the cables 31 on both sides can be easily connected.

[0106] Optionally, a strain sensor is installed in the cable 31, the strain sensor is connected to the cable 31, and the cable 31 is connected to the wind farm control center; the strain sensor is used to detect the strain data of the cable 31, and the cable 31 is used to transmit the strain data to the wind farm control center.

[0107] Specifically, a strain sensor is installed in the cable 31 and connected to the cable 31. The cable 31 is connected to the wind farm control center. The strain sensor can monitor the load on the cable 31 in real time. The strain data can be transmitted to the wind farm control center through the wires inside the cable 31. The wind farm control center can then detect abnormal strain data inside the cable 31 and remotely monitor the impact level so that appropriate measures can be taken in a timely manner.

[0108] Optionally, the floating platform 21 further includes a communication antenna 215 and a sensor and data storage module 216 disposed on the float 211; the sensor and data storage module 216 is connected to the communication antenna 215, the communication antenna 215 is connected to the wind farm control center, the sensor and data storage module 216 is used to detect wind speed and wave data, and the communication antenna 215 is used to receive the wind speed and wave data and send the wind speed and wave data to the wind farm control center.

[0109] Specifically, referring to Figure 2, the floating platform 21 also includes a communication antenna 215 and a sensor and data storage module 216 installed on the float 211. The sensor and data storage module 216 can detect data such as sea wind speed and wave height, wavelength, and wave period. The sensor and data storage module 216 is connected to the communication antenna 215, which is connected to the wind farm control center. The communication antenna 215 can receive wind speed and wave data and send this data to the wind farm control center. In turn, the wind farm control center can monitor the sea wind and wave conditions in real time so as to take protective measures in advance, such as reinforcing the fence structure and adjusting the tension of the cable 31, to ensure the interception effect of floating objects, prevent the fence from being damaged in strong winds and waves, and extend the service life of the fence.

[0110] Preferably, the cable 31 of the second-layer fence 2 can also be connected to the external power supply of the wind farm. At the same time, the cable 31 is connected to the communication antenna 215 and the sensor and data storage module 216, which can realize the power supply of the communication antenna 215 and the sensor and data storage module 216 of the floating platform 21.

[0111] In this embodiment, the remote monitoring and management of the floating fence device using sensors and the wind farm control center is a technology known to those skilled in the art and will not be described in detail here.

[0112] The floating fence device provided in this embodiment will deform when it is hit by a large floating object at sea. The cable 31 can block the floating object from entering the wind farm to a certain extent. At the same time, the wind farm control center will monitor the abnormal strain data inside the cable 31. Through the data, the impact degree can be remotely monitored and the specific measures that need to be taken can be determined. It can effectively ensure the safety of the facilities inside the wind farm while saving costs.

[0113] The floating fence device for offshore wind farms proposed in this embodiment can be applied to wind farms in sea areas with intensive cargo and fishing activities or in the open sea. It can effectively prevent out-of-control vessels and large floating objects that are freely floating at sea from entering the wind farm, avoid collisions with the turbine platform, and ensure the structural safety of the wind turbine.

[0114] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0115] It should also be noted that, in this document, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations, nor should they be construed as indicating or implying relative importance. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. In the absence of further restrictions, an element defined by the phrase "includes a..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes the element.

[0116] The technical solutions provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand this application, and the content of this specification should not be construed as a limitation of this application. Furthermore, for those skilled in the art, there will be different forms of changes in the specific implementation methods and application scope based on this application. It is neither necessary nor possible to exhaustively list all implementation methods here, and obvious changes or modifications derived therefrom are still within the protection scope of this application.

Claims

1. A floating fence device for offshore wind farms, applied in offshore wind farms, characterized in that, include: The first layer of fence (1) is set on the wind turbine (41) outside the wind farm; The first layer of the fence (1) includes multiple first connecting devices (11), each first connecting device (11) connecting two adjacent unit locations; the first connecting device (11) is used to block floating objects from entering the wind farm.

2. The floating fence device for offshore wind farms according to claim 1, characterized in that: The length of the first connecting device (11) is greater than the straight-line distance between the two adjacent unit locations connected to it.

3. The floating fence device for offshore wind farms according to claim 1, characterized in that: The first layer of the fence (1) is provided with a first entrance and exit (12), and the first connecting device (11) is not provided between the two unit locations corresponding to the first entrance and exit (12).

4. The floating fence device for offshore wind farms according to claim 3, characterized in that: The first inlet / outlet (12) is located on the side of the wind farm near the coast (51).

5. The floating fence device for offshore wind farms according to claim 3 or 4, characterized in that: It also includes a second layer of fencing (2), which is located outside the first layer of fencing (1); the second layer of fencing (2) includes multiple floating platforms (21) and multiple sections of second connecting devices (22); the multiple floating platforms (21) are spaced apart and connected to the seabed (52), and each section of the second connecting device (22) connects two adjacent floating platforms (21).

6. The floating fence device for offshore wind farms according to claim 5, characterized in that: The second layer of fencing (2) is set on the side of the wind farm away from the coast (51).

7. The floating fence device for offshore wind farms according to claim 5, characterized in that: The second layer of fencing (2) is arranged around the circumference of the wind farm.

8. The floating fence device for offshore wind farms according to claim 7, characterized in that: The second layer of the fence (2) is provided with a second entrance (23), and the second connecting device (22) is not provided between the two floating platforms (21) corresponding to the second entrance (23).

9. The floating fence device for offshore wind farms according to claim 8, characterized in that: The position of the second inlet / outlet (23) is set to correspond to the position of the first inlet / outlet (12).

10. The floating fence device for offshore wind farms according to claim 5, characterized in that: The length of the second connecting device (22) is greater than the straight-line distance between the two floating platforms (21) connected to it.

11. The floating fence device for offshore wind farms according to claim 5, characterized in that: Both the first connecting device (11) and the second connecting device (22) include a cable (31) and a plurality of floats (32), the cable (31) including a submarine cable, and the plurality of floats (32) being distributed at intervals on the cable (31).

12. The floating fence device for offshore wind farms according to claim 11, characterized in that: A strain sensor is installed in the cable (31), the strain sensor is connected to the cable (31), and the cable (31) is connected to the wind farm control center; the strain sensor is used to detect the strain data of the cable (31), and the cable (31) is used to transmit the strain data to the wind farm control center.

13. The floating fence device for offshore wind farms according to claim 11, characterized in that: The floating platform (21) includes a float (211), mooring chains (213) and anchor piles (214); the anchor piles (214) are fixed on the seabed (52), and the float (211) is connected to the anchor piles (214) by multiple mooring chains (213); the float (211) is provided with a mooring hole (212), and the float (211) is connected to the cable (31) through the mooring hole (212).

14. The floating fence device for offshore wind farms according to claim 13, characterized in that: The floating platform (21) also includes a communication antenna (215) and a sensor and data storage module (216) mounted on the float (211); the sensor and data storage module (216) is connected to the communication antenna (215), the communication antenna (215) is connected to the wind farm control center, the sensor and data storage module (216) is used to detect wind speed and wave data, and the communication antenna (215) is used to receive the wind speed and wave data and send the wind speed and wave data to the wind farm control center.

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