Offshore wind power scouring prevention device

Abstract

The utility model relates to offshore wind power engineering technical field especially relates to a kind of offshore wind power scouring prevention device, including sea wind pile foundation, energy storage component and water spraying component, the energy storage component is used to convert water flow energy into electric energy, the water spraying component is connected with energy storage component, the water spraying component is towards water flow direction and sprays water;The energy storage component and water spraying component are provided with multiple groups and are arranged around sea wind pile foundation;Mechanical energy of tidal current, wave around sea wind pile foundation is converted into electric energy, then electric energy is converted into water flow opposite to tidal current, wave and carries out energy dissipation, design is ingenious, with stronger engineering implementability.

Description

Technical Field

[0001] This utility model relates to the field of offshore wind power engineering technology, and in particular to an offshore wind power anti-scouring device. Background Technology

[0002] Offshore wind power refers to the technology of generating electricity using wind power in a marine environment. It involves installing wind turbine generators in nearshore or offshore areas to convert wind energy into electrical energy. Compared to onshore wind power, offshore wind power has advantages such as abundant wind resources, stable wind speeds, and no land occupation, making it an important direction for global clean energy development. However, offshore wind power facilities are constantly exposed to the complex marine environment. Seawater flows (including tides, waves, and currents) continuously erode the seabed around the turbine foundations, causing sediment loss and forming scour pits. The impact of waves and currents on the pile foundations creates horseshoe-shaped vortices on the upstream side and vortex shedding on the downstream side. If the scour depth is too great, it may expose the foundation structure, reduce its load-bearing capacity, and consequently cause the turbine to tilt or even collapse. Furthermore, the harsh marine environment results in extremely high maintenance costs; therefore, anti-scour measures directly affect the turbine's lifespan, operational safety, and project economics. Existing offshore wind power foundation scour protection technologies mainly employ methods such as riprap protection and concrete protective pads to physically cover or reinforce the seabed to resist scour. While these methods can stabilize the foundation in the short term, they also present problems such as high material consumption, high construction and maintenance costs, and significant ecological disturbance.

[0003] The Chinese authorized invention patent "A Marine Wind Turbine Pile Foundation with an Anti-scour Structure" (application number: 202410844367.5) proposes a marine wind turbine pile foundation composed of a wind turbine monopile, an anti-scour truncated cone, a conveying cylinder, a connecting sleeve, and a collecting cylinder. The anti-scour truncated cone and stones protect the wind turbine monopile and collect sand and gravel carried by ocean currents. The collected sand and gravel are then transported to the inside of the anti-scour truncated cone to fill any scour pits, preventing them from enlarging and achieving a good anti-scour effect. However, the core idea of ​​this technical solution still relies on passive and unidirectional protection, only delaying the scour process by dissipating water flow energy. It cannot actively counteract the mechanical energy of scour and lacks the reuse of tidal and wave energy, resulting in insufficient economic efficiency and sustainability, and thus has certain limitations. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a marine wind power anti-scour device that can convert and reuse the mechanical energy of tidal currents and waves, and use the energy conversion of water flow to achieve closed-loop active energy dissipation.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: an offshore wind power anti-scour device, including an offshore wind pile foundation, an energy storage component and a water spray component, wherein the energy storage component is used to convert water flow energy into electrical energy, the water spray component is connected to the energy storage component, and the water spray component sprays water in the direction of water flow; multiple sets of the energy storage component and the water spray component are arranged around the offshore wind pile foundation.

[0006] Furthermore, the energy storage component includes a power generation device, which includes a power generation sleeve, a force transmission rod, and a chute. The length direction of the chute extends away from the sea wind pile foundation. The power generation sleeve is located at one end of the chute and has an induction coil inside. The force transmission rod is movably mounted on the chute, and one end of the rod has a permanent magnet that is movably connected to the power generation sleeve.

[0007] Furthermore, it also includes an anti-scouring cover, which is arranged around the sea breeze pile foundation. The anti-scouring cover includes an inclined portion, and the sliding groove is provided on the inclined portion.

[0008] Furthermore, the power generation equipment also includes a sliding device, which includes pulleys and a support plate. The support plate is connected to a force transmission rod, and pulleys that cooperate with the sliding groove are provided on both sides of the support plate.

[0009] Furthermore, the energy storage component also includes an energy storage device connected to the power generation equipment. The energy storage device is used to convert the electrical energy generated by the power generation equipment into electrical energy with a voltage and frequency suitable for energy storage.

[0010] Furthermore, a waterproof rubber sleeve is provided at the part where the force transmission rod and the power generation sleeve are fitted together.

[0011] Furthermore, the space between the scour protection cover and the sea breeze pile foundation is filled with gravel.

[0012] Furthermore, a limiter is provided at the end of the chute away from the sea breeze pile foundation, and the limiter and the support plate are opposite each other in the length direction of the chute.

[0013] Furthermore, it also includes an energy dissipation block, and the anti-scouring cover also includes a horizontal part, which is located at the end of the inclined part away from the sea wind pile foundation; the energy dissipation block is located on the horizontal part.

[0014] Furthermore, the water-facing surface of the energy dissipation block is a concave circular arc surface.

[0015] The beneficial effects of this invention are as follows: by converting the mechanical energy of tidal currents and waves around the sea breeze pile foundation into electrical energy, and then converting the electrical energy into water flow in the opposite direction of the tidal currents and waves for energy dissipation, the design is ingenious and has strong engineering feasibility; by converting the mechanical energy carried by the movement of waves and tidal currents into electrical energy, the dual goals of energy recovery and active protection are achieved. Compared with purely consumable solutions such as rock dumping, this design significantly reduces operation and maintenance costs and endows the system with self-powered characteristics. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the offshore wind power anti-scour device according to a specific embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of the power generation equipment of the offshore wind power anti-scour device according to a specific embodiment of the present utility model;

[0018] Figure 3 This is a cross-sectional view of the offshore wind power anti-scour device according to a specific embodiment of the present utility model;

[0019] Label Explanation:

[0020] 1. Sea breeze pile foundation; 2. Acoustic Doppler current meter; 3. Pumping device; 4. Miniature servo motor; 5. Flow rate regulating valve; 6. Nozzle; 7. Water storage tank; 8. Energy storage equipment; 9. Generator sleeve; 10. Dowel bar; 11. Support plate; 12. Water baffle; 13. Energy dissipation block; 14. Slide chute; 15. Anti-erosion cover; 16. Limit switch; 17. Pulley; 18. First water level gauge; 19. Second water level gauge; 20. Crushed stone; 21. Induction coil; 22. Waterproof rubber sleeve; 23. Permanent magnet. Detailed Implementation

[0021] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0022] Please refer to Figures 1 to 3 A scour protection device for offshore wind power includes an offshore wind pile foundation, an energy storage component, and a water spray component. The energy storage component is used to convert water flow energy into electrical energy. The water spray component is connected to the energy storage component and sprays water in the direction of water flow. Multiple sets of the energy storage component and the water spray component are arranged around the offshore wind pile foundation.

[0023] As described above, the beneficial effects of this utility model are as follows: by converting the mechanical energy of tidal currents and waves around the sea breeze pile foundation into electrical energy, and then converting the electrical energy into water flow in the opposite direction of the tidal currents and waves for energy dissipation, the design is ingenious and has strong engineering feasibility; by converting the mechanical energy carried by the movement of waves and tidal currents into electrical energy, the dual goals of energy recovery and active protection are achieved. Compared with purely consumable solutions such as rock dumping, this design significantly reduces operation and maintenance costs and endows the system with self-powered characteristics.

[0024] Furthermore, the energy storage component includes a power generation device, which includes a power generation sleeve, a force transmission rod, and a chute. The length direction of the chute extends away from the sea wind pile foundation. The power generation sleeve is located at one end of the chute and has an induction coil inside. The force transmission rod is movably mounted on the chute, and one end of the rod has a permanent magnet that is movably connected to the power generation sleeve.

[0025] As described above, the force transmission rod moves along the slide groove by the energy of the water flow of the tide and waves. The permanent magnet at one end moves in the generator sleeve to cooperate with the induction coil to generate electrical energy. Then, the electrical energy is used to drive the water spray assembly to spray water in the direction of the water flow to dissipate the energy.

[0026] Furthermore, it also includes an anti-scouring cover, which is arranged around the sea breeze pile foundation. The anti-scouring cover includes an inclined portion, and the sliding groove is provided on the inclined portion.

[0027] As described above, the design of the scour shield can reduce the physical coverage area of ​​the seabed topography and avoid the interference of large-scale rock dumping or concrete construction on the marine ecology. In addition, the chute is located in the inclined part of the scour shield. When the tide and waves recede, under the inclined guidance of the inclined part of the scour shield and the traction of the receding waves and tides, the force transmission rod can be driven to move again to generate electricity.

[0028] Furthermore, the power generation equipment also includes a sliding device, which includes pulleys and a support plate. The support plate is connected to a force transmission rod, and pulleys that cooperate with the sliding groove are provided on both sides of the support plate.

[0029] As can be seen from the above description, by the movement of the pulley and the slide, the force transmission rod can move along the slide by connecting the support plate with the pulley and the force transmission rod.

[0030] Furthermore, the energy storage component also includes an energy storage device connected to the power generation equipment. The energy storage device is used to convert the electrical energy generated by the power generation equipment into electrical energy with a voltage and frequency suitable for energy storage.

[0031] As described above, the electrical energy generated by the power generation equipment is converted and stored through energy storage devices to supply the water spray components.

[0032] Furthermore, a waterproof rubber sleeve is provided at the part where the force transmission rod and the power generation sleeve are fitted together.

[0033] As can be seen from the above description, a waterproof rubber sleeve is designed to achieve a sealed and waterproof effect.

[0034] Furthermore, the space between the scour protection cover and the sea breeze pile foundation is filled with gravel.

[0035] As described above, the connection between the scour shield and the sea breeze pile foundation is stabilized by filling with gravel.

[0036] Furthermore, a limiter is provided at the end of the chute away from the sea breeze pile foundation, and the limiter and the support plate are opposite each other in the length direction of the chute.

[0037] As can be seen from the above description, by setting the limiter, the movement of the tray and the force transmission rod can be restricted, thereby preventing them from moving out of the slide.

[0038] Furthermore, it also includes an energy dissipation block, and the anti-scouring cover also includes a horizontal part, which is located at the end of the inclined part away from the sea wind pile foundation; the energy dissipation block is located on the horizontal part.

[0039] As can be seen from the above description, the initial energy dissipation of waves and currents is achieved through energy dissipation blocks.

[0040] Furthermore, the water-facing surface of the energy dissipation block is a concave circular arc surface.

[0041] As described above, the concave arc surface design of the water-facing side of the energy dissipation block can change the direction of some low-lying waves and currents after passing through the arc surface of the energy dissipation block, causing them to collide with and dissipate energy from the waves and currents in the middle and low-lying areas. This plays a role in the first energy dissipation and protection, while also changing the flow direction of some waves and currents to better act on the force transmission rod.

[0042] Please refer to Figures 1 to 3 Embodiment 1 of this utility model is as follows:

[0043] A scour protection device for offshore wind power includes an offshore wind pile foundation 1, a scour protection cover 15, an energy storage component, and a water spray component.

[0044] The scour protection cover 15 is arranged around the sea breeze pile foundation 1; the space between the scour protection cover 15 and the sea breeze pile foundation 1 is filled with gravel 20. The scour protection cover 15 includes an inclined portion and a horizontal portion. The energy storage component and the water spray component are both provided on the inclined portion. The energy storage component is provided on the scour protection cover 15 for converting water flow energy into electrical energy. The water spray component is connected to the energy storage component and sprays water in the direction of water flow.

[0045] Specifically, the energy storage component includes a power generation device and an energy storage device 8. The power generation device includes a power generation sleeve 8, a force transmission rod 10, a chute 14, and a sliding device. The chute 14 is provided on the inclined portion of the anti-scouring cover 15. The length direction of the chute 14 extends away from the sea breeze pile foundation 1. The power generation sleeve 8 is located at one end of the chute 14, and an induction coil 21 is provided inside the power generation sleeve 8. The sliding device includes a support plate 11 and pulleys 17. The force transmission rod 10 is connected to the support plate 11. The pulleys 17 are provided on both sides of the support plate 11. The pulleys 17 are movably engaged with the chute 14. One end of the force transmission rod 10 is provided with a permanent magnet 23, which is movably sleeved with the power generation sleeve 8. A limiter 16 is provided at the end of the chute 14 away from the sea breeze pile foundation 1. The limiter 16 is opposite to the support plate 11 in the length direction of the chute 14, and it can limit the movement of the force transmission rod 10 and the support plate 11. The force transmission rod 10 is provided with a semi-circular baffle plate 12 at the end away from the power generation sleeve 8. When waves and currents surge, the force transmission rod 10 moves by being subjected to force through the baffle plate 12. The permanent magnet 23 cuts the magnetic field lines of the induction coil 21 to generate electrical energy. After the waves and currents hit the waterproof scour cover, they will retreat. At this time, under the tilting guidance of the tilted part of the anti-scour cover 15 and the retreat of the waves and currents, the permanent magnet 23 cuts the magnetic field lines of the induction coil 21 again to generate electrical energy.

[0046] Specifically, a highly ductile waterproof rubber sleeve 22 is provided at the connection between the force transmission rod 10 and the power generation sleeve 8. In this embodiment, the waterproof rubber sleeve 22 is a thermoplastic polyurethane elastomer (TPU).

[0047] Multiple energy dissipation blocks 13 are provided on the horizontal part of the anti-scour cover 15, spaced apart along the length of the chute 14. The water-facing surface of the energy dissipation block 13 is a concave arc surface. After passing the arc surface of the energy dissipation block 13, some low-lying waves and currents can change their direction of movement and collide with and dissipate energy with the mid-to-low-lying waves and currents, thus playing a role in the first energy dissipation and protection. At the same time, it changes the flow direction of some waves and currents to better act on the baffle plate 12.

[0048] The energy storage device 8 is connected to the power generation equipment, and is used to convert the electrical energy generated by the power generation equipment into electrical energy with a voltage and frequency suitable for energy storage. The energy storage device 8 converts the raw electrical energy generated in the induction coil 21 into a voltage and frequency suitable for energy storage via a converter, which is a conventional setup in the art.

[0049] The water spray assembly includes a water storage tank 7, a pumping device, a nozzle 6, a water pumping device 3, a first water level gauge 18, a second water level gauge 19, an acoustic Doppler current meter 2, a flow rate regulating valve 5, a micro servo motor 4, and a built-in control computer.

[0050] The water storage tank 7 is equipped with a nozzle 6. The pumping device is connected to the nozzle 6 to pump water from inside the water storage tank 7 to the nozzle 6. The pumping device 3 is used to pump external seawater into the water storage tank 7. The first water level gauge 18 and the second water level gauge 19 are located inside the water storage tank 7 and are spaced apart along the height of the water storage tank 7. The first water level gauge 18, the second water level gauge 19, and the pumping device 3 are electrically connected. The water storage tank 7 is equipped with an acoustic Doppler current meter 2, a flow rate regulating valve 5, and a micro servo motor 4. The built-in control computer is electrically connected to the pumping device, the pumping device 3, the first water level gauge 18, the second water level gauge 19, the acoustic Doppler current meter 2, the flow rate regulating valve 5, and the micro servo motor 4. The micro servo motor 4 is driven by the nozzle 6 and drives it to change the spray direction. The flow rate regulating valve 5 is connected to the nozzle 6 to adjust the water spray speed of the nozzle 6.

[0051] Working principle: After the device is operating normally, the waves and currents in the seawater carry enormous mechanical energy towards the sea breeze foundation. Some of the lower-level waves and currents change direction after passing the arc surface of the energy dissipation block 13, colliding with and dissipating energy from the middle and lower-level waves and currents, thus playing a role in the first energy dissipation and protection. At the same time, it changes the flow direction of some waves and currents to better act on the baffle plate 12. The baffle plate 12 is connected to the force transmission rod 10. Driven by the mechanical energy of the waves and currents, and with the cooperation of the support plate 11, pulley 17 and the sliding groove 14 fixed on the inclined part of the anti-scour cover 15, the permanent magnet 23 at the other end of the force transmission rod 10 is driven to cut the magnetic field lines back and forth in the power generation sleeve 8. According to the law of electromagnetic induction, current is generated in the induction coil 21, thus realizing the conversion of the mechanical energy of the waves and currents into electrical energy. The generated electrical energy will be stored in the energy storage device 8. When the first water level gauge 18 in the water storage tank 7 detects that the water level in the tank is insufficient and the energy storage device 8 has sufficient power, the pumping device 3 will start working. When the second water level gauge 19 in the water storage tank 7 detects that the water level is sufficient, the pumping device 3 will stop working. The acoustic Doppler current meter 2 on the top of the water storage tank 7 will monitor the direction and velocity of the waves and currents in real time and transmit the relevant data to the built-in control computer. When the energy storage device 8 has sufficient power and detects that waves and currents are about to arrive, the control computer will start the micro servo motor 4, the flow rate regulating valve 5 and the nozzle 6 respectively. According to the direction and size of the waves and currents, water flows with corresponding speeds and opposite directions will be sprayed out. The collision between the water flows will play a role in energy dissipation and protection, and ultimately reduce the scouring of the seabed around the sea breeze pile foundation 1 by the waves and currents.

[0052] In summary, the offshore wind power scour protection device provided by this utility model ingeniously converts the mechanical energy of tidal currents and waves around the offshore wind turbine foundation into electrical energy, and then converts the electrical energy into water flow in the opposite direction of the tidal currents and waves for energy dissipation. It has strong engineering feasibility. By converting the mechanical energy carried by waves and tidal currents into electrical energy, it achieves the dual goals of energy recovery and active protection. Compared with purely consumable solutions such as rock dumping, this design significantly reduces operation and maintenance costs and endows the system with self-powering characteristics.

[0053] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A scour prevention device for offshore wind power, characterized in that, It includes a sea breeze pile foundation, an energy storage component, and a water spray component. The energy storage component is used to convert water flow energy into electrical energy. The water spray component is connected to the energy storage component and sprays water in the direction of water flow. Multiple sets of the energy storage component and the water spray component are arranged around the sea breeze pile foundation.

2. The offshore wind power scour prevention device according to claim 1, characterized in that, The energy storage component includes a power generation device, which includes a power generation sleeve, a force transmission rod, and a chute. The length direction of the chute extends away from the sea wind pile foundation. The power generation sleeve is located at one end of the chute and has an induction coil inside. The force transmission rod is movably mounted on the chute, and one end of the rod has a permanent magnet that is movably connected to the power generation sleeve.

3. The offshore wind power scour prevention device according to claim 2, characterized in that, It also includes an anti-scouring cover, which is arranged around the sea breeze pile foundation. The anti-scouring cover includes an inclined part, and the sliding groove is provided on the inclined part.

4. The offshore wind power scour prevention device according to claim 2, characterized in that, The power generation equipment also includes a sliding device, which includes pulleys and a support plate. The support plate is connected to a force transmission rod, and pulleys that move and cooperate with the sliding groove are provided on both sides of the support plate.

5. The offshore wind power scour prevention device according to claim 2, characterized in that, The energy storage component also includes an energy storage device connected to the power generation equipment. The energy storage device is used to convert the electrical energy generated by the power generation equipment into electrical energy with a voltage and frequency suitable for energy storage.

6. The offshore wind power scour prevention device according to claim 2, characterized in that, A waterproof rubber sleeve is provided at the point where the force transmission rod and the power generation sleeve are fitted together.

7. The offshore wind power scour prevention device according to claim 3, characterized in that, The space between the scour protection cover and the sea breeze pile foundation is filled with crushed stone.

8. The offshore wind power scour prevention device according to claim 4, characterized in that, The end of the chute furthest from the sea breeze pile foundation is equipped with a limiter, and the limiter and the support plate are opposite each other in the length direction of the chute.

9. The offshore wind power anti-scour device according to claim 3, characterized in that, It also includes an energy dissipation block, and the anti-scouring cover also includes a horizontal part, which is located at the end of the inclined part away from the sea wind pile foundation; the energy dissipation block is located on the horizontal part.

10. The offshore wind power scour prevention device according to claim 9, characterized in that, The water-facing surface of the energy dissipation block is a concave arc surface.

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