Marine foundation scour protection device

Abstract

The application belongs to the technical field of marine foundation scour protection, and specifically discloses a marine foundation scour protection device, which comprises a wind-driven generator and a plurality of levels of turbulence components arranged around the marine foundation from outside to inside, each level of turbulence components comprising a plurality of turbulence units; each turbulence unit comprises a turbine box, a turbine and a speed reduction module; the end of the turbine box away from the marine foundation is in an open shape, and the end of the turbine box close to the marine foundation is provided with the speed reduction module; the turbine is arranged in the turbine box and is used for generating electricity under the driving of water flow when the water flow velocity is less than a threshold value, and the water flow passing through the turbine enters the speed reduction module to be slowed down; the wind-driven generator is connected with the turbine and is used for driving the turbine to rotate reversely when the water flow velocity is greater than or equal to the flow velocity threshold value, so as to utilize the water flow reversely rotating with the turbine to collide with the external water flow. The application can realize the same field development and collaborative utilization of wind energy and tidal energy while realizing the marine foundation scour protection.

Description

Technical Field

[0001] This invention belongs to the field of marine foundation scour protection technology, and specifically discloses a marine foundation scour protection device. Background Technology

[0002] Marine engineering structures are core infrastructure connecting land and sea, enabling marine resource development and transportation connectivity. Examples include bridge piers, offshore wind turbine foundations, port and wharf pile foundations, and submarine pipeline support structures. Their safety and stability directly determine the service life and operational safety of the entire project. In the complex hydrological and geological environment of the ocean, foundation structures, as key components bearing the loads of the superstructure, are subjected to continuous dynamic loads such as waves, currents, and tides. The resulting foundation scouring has become one of the primary hidden dangers threatening the safety of marine engineering structures.

[0003] Scouring around the foundations of marine structures is a complex phenomenon primarily caused by the combined effects of waves and currents. When water flows around the foundation, it alters the local flow field characteristics, creating multiple eddy current systems. This leads to the gradual stripping of sediment from the foundation, forming scour pits. As these scour pits deepen and expand, the effective burial depth of the foundation decreases, thereby weakening its load-bearing capacity and stability, posing a serious threat to the overall structural safety. In severe cases, it can even lead to major accidents such as pile foundation collapse.

[0004] Currently, common methods for protecting marine foundations from scour can be divided into two main categories. One is passive protection, which mainly involves laying protective equipment around the marine foundation to improve the seabed's resistance to scour; for example, laying riprap, stabilizing soil, and geotextile soft protection. The other is active protection, which aims to weaken the flow field intensity by changing the local flow field, such as grid frames and biomimetic grass.

[0005] Whether active or passive, most existing methods of protecting marine foundations from scour focus on near-field protection. Near-field protection refers to direct protection around the marine foundation, such as laying boulders, installing grid frames, and setting up flow guiding mechanisms around the foundation. Near-field protection has the following main disadvantages: (1) It is limited to "passive resistance" or blocking the scour path without changing the hydrodynamic conditions that cause scour. (2) Once the block becomes unstable or the frame is damaged, it may collide with the marine foundation due to its proximity to the foundation, causing secondary damage. (3) When the flow velocity is too high, "secondary scour" may occur outside the protection range, resulting in new scour pits at the protection edge. (4) Near-field protection has poor adaptability to the form and topography of the marine foundation. Summary of the Invention

[0006] The purpose of this invention is to provide a marine basic scour protection device to solve the technical problem that existing active and passive protection methods have poor protection effects due to the unchanged hydrodynamic conditions that cause scour.

[0007] This invention provides a marine foundation scour protection device, including a wind turbine and a multi-stage turbulence-disrupting assembly surrounding the marine foundation and arranged from the outside to the inside, each stage of the turbulence-disrupting assembly including multiple turbulence-disrupting units;

[0008] Each spoiler unit includes a turbine housing, a turbine, and a reduction gear module;

[0009] The turbine housing is open at the end furthest from the marine foundation, and the deceleration module is located at the end closest to the marine foundation.

[0010] The turbine is installed inside the turbine housing and is used to generate electricity under the drive of the water flow when the water flow velocity is less than a threshold. The water flow through the turbine enters the deceleration module for deceleration.

[0011] The wind turbine is connected to the turbine and is used to drive the turbine to rotate in the opposite direction when the water flow velocity is greater than or equal to the flow velocity threshold, so as to use the water flow from the turbine rotating in the opposite direction to counteract the external water flow.

[0012] Preferably, the height of multiple turbulence units in each turbulence component is consistent, and the height of turbulence units in adjacent turbulence components is different.

[0013] Preferably, the turbulence units in adjacent turbulence components are arranged in a circumferentially staggered manner.

[0014] Preferably, the deceleration module includes a first water flow channel and a deceleration submodule;

[0015] The first water flow channel is fixedly connected to the end of the turbine box, and the first water flow channel is a one-way channel;

[0016] The deceleration submodule is located on the side of the first water flow channel near the marine foundation and is used to decelerate the water flow output from the first water flow channel.

[0017] Preferably, the deceleration submodule includes multiple deceleration groups arranged along the water flow direction.

[0018] Preferably, each turbulence unit further includes a V-shaped diversion channel;

[0019] The V-shaped diversion channel is connected to the deceleration submodule.

[0020] Preferably, each spoiler unit also includes a bottom protector;

[0021] The bottom protection is provided on the upper surface of the soil where the turbine is located.

[0022] Preferably, a second water flow channel is provided on the wall of the turbine housing.

[0023] Preferably, the innermost turbulence-disrupting component is disposed outside the corresponding scour area of ​​the marine foundation.

[0024] The marine basic scour protection device of the present invention has the following advantages compared with the prior art:

[0025] (1) Based on far-field active protection, the scour protection effect is good. The present invention sets the protection area in the far field outside the potential scour pit (i.e., the scour area corresponding to the marine foundation), and intervenes in the water flow in advance to change its velocity and direction. Compared with the traditional near-field protection method, this far-field protection can cover a larger area of ​​seabed. By "advanced diversion" rather than "near-endurance hard resistance", the energy of the flow field is dissipated and guided before it reaches the marine foundation, maintaining the "relatively calm water environment" of the near-field sea area.

[0026] (2) This invention realizes the simultaneous development and synergistic utilization of wind energy and tidal energy. At low flow rates, tidal energy drives turbines to generate electricity, making full use of tidal energy; at high flow rates, wind energy is converted into electrical energy through wind turbines to power turbines, achieving scour protection while also making reasonable use of wind energy resources.

[0027] (3) The turbulence unit can perform different functions at different flow velocities. At low flow velocities, the turbulence unit can switch to a passive turbulence mode that generates electricity, thereby generating electricity and reducing the kinetic energy of the water flow. At high flow velocities, the turbulence unit can switch to an active turbulence mode that consumes electricity, thereby reducing the kinetic energy of the water flow and changing the direction of the water flow.

[0028] (4) This invention is applicable to different types of marine foundations and deep-sea environments, covering various types such as pile foundations, jacket foundations, suction cylinder foundations, and gravity foundations. It can effectively meet different scour protection needs in both shallow and deep-sea environments. Attached Figure Description

[0029] Figure 1 This is a front view of the marine foundation scour protection device according to an embodiment of the present invention.

[0030] Figure 2 This is a top view of the marine foundation scour protection device according to an embodiment of the present invention.

[0031] Figure 3 This is a front view of the turbulence unit in the marine basic scour protection device according to an embodiment of the present invention.

[0032] Figure 4This is a top view of the turbulence unit in the marine basic scour protection device according to an embodiment of the present invention.

[0033] Figure 5 This is a front view of the working state of the turbulence unit of the marine foundation scour protection device according to an embodiment of the present invention under low flow velocity conditions.

[0034] Figure 6 This is a top view of the working state of the turbulence unit of the marine foundation scour protection device according to an embodiment of the present invention under low flow velocity conditions.

[0035] Figure 7 This is a front view of the working state of the turbulence unit of the marine foundation scour protection device according to an embodiment of the present invention under high flow velocity conditions.

[0036] Figure 8 This is a top view of the working state of the turbulence unit of the marine foundation scour protection device according to an embodiment of the present invention under high flow velocity conditions.

[0037] In the diagram: 1 is the marine foundation; 2 is the scouring area; 3 is the turbulence unit; 31 is the turbine; 32 is the turbine housing; 321 is the housing; 322 is the first water flow channel; 323 is the second water flow channel; 324 is the first deceleration group; 325 is the second deceleration group; 33 is the V-shaped diversion channel; 4 is the bottom protection. Detailed Implementation

[0038] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the invention. However, those skilled in the art will understand that the invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the invention with unnecessary detail.

[0039] This invention provides a marine basic scour protection device, such as... Figures 1 to 8 As shown, it includes a wind turbine and a multi-stage disturbance component arranged from the outside to the inside around the marine foundation. Each stage of the disturbance component includes multiple disturbance units 3. The disturbance component located at the outermost ring is the first-stage disturbance component, followed by the second-stage disturbance component, the third-stage disturbance component, and so on, moving inwards.

[0040] The structure of each turbulence unit 3 in this embodiment of the invention is as follows: Figure 3 and Figure 4As shown, it includes a turbine housing 32, a turbine 31, and a reduction module; the turbine housing 32 is open at the end away from the marine foundation 1, and the reduction module is provided at the end closer to the marine foundation 1; the turbine 31 is located inside the turbine housing 32 and is used to generate electricity under the drive of the water flow when the water flow velocity is less than a threshold, and the water flow through the turbine 31 enters the reduction module for deceleration; the wind turbine is connected to the turbine 31 and is used to drive the turbine 31 to rotate in the opposite direction when the water flow velocity is greater than or equal to the flow velocity threshold, and use the water flow of the turbine 31 rotating in the opposite direction to counteract the external water flow.

[0041] The turbine housing 32 of this invention is made of various types of high-strength corrosion-resistant materials. The end of the turbine housing 32 away from the marine foundation 1 is a fully open structure. The end of the turbine housing 32 close to the marine foundation 1 is provided with a deceleration module. The deceleration module only allows water to flow from the inside of the housing 321 to the outside.

[0042] The turbine 31 in this embodiment of the invention is equipped with a high-precision speed sensor, which can monitor the blade speed in real time, thereby determining its operating mode, and can adjust its rotational resistance and rotational speed in real time based on the monitoring results. The turbine 31 has two main operating modes: first, water flows through the turbine 31, driving it to rotate and generate electricity, thus reducing the water flow velocity and achieving a passive turbulence effect; second, the turbine 31 utilizes surplus electricity generated by the wind turbine to rotate in the opposite direction, generating an active flow field that counteracts the external water flow, achieving an active turbulence scouring and protection effect.

[0043] The deceleration module of this embodiment includes a first water flow channel 322 and a deceleration submodule. The first water flow channel 322 is fixedly connected to the end of the turbine box 32, and the first water flow channel 322 is a unidirectional channel. The deceleration submodule is disposed on the side of the first water flow channel 322 near the marine foundation 1, and is used to decelerate the water flow output from the first water flow channel 322. The deceleration submodule includes multiple deceleration groups arranged along the water flow direction. The number of deceleration groups can be adjusted according to the specific flow field conditions to achieve a step-by-step reduction of flow field energy in a coordinated manner. For example, the deceleration submodule includes a first deceleration group 324 and a second deceleration group 325 arranged along the water flow direction, and the first deceleration group 324 and the second deceleration group 325 use grids with different mesh densities.

[0044] In order to ensure that there is enough water flow to counteract the external water flow when the turbine 31 rotates in reverse, a second water flow channel 323 is provided on the wall of the turbine box 32 in this embodiment of the invention.

[0045] Each flow-diverting unit 3 in this embodiment of the invention further includes a V-shaped diversion channel 33; the V-shaped diversion channel 33 is connected to the deceleration submodule. The V-shaped diversion channel 33 opens to both sides at a certain angle to guide the water flow and change the direction of the water flow. Specifically, the water flow that has been decelerated by the first-stage flow-diverting component can enter the second-stage flow-diverting component at a certain angle for deceleration. This angle should be such that the water flow from a certain flow-diverting unit 3 in the first-stage flow-diverting component just enters the adjacent flow-diverting unit 3 in the second-stage flow-diverting component.

[0046] To prevent the water flow generated during turbine 31 operation from eroding and damaging the soil at the bottom of the turbulence unit 3, each turbulence unit 3 in this embodiment of the invention further includes a bottom protection 4; the bottom protection 4 is disposed on the upper surface of the soil where the turbine 31 is located. Exemplarily, the bottom protection 4 is a flexible structure.

[0047] To achieve far-field protection, the flow field structure is passively or actively altered in advance. In this embodiment of the invention, the innermost turbulence component is located outside the scour area 2 (potential scour pit) corresponding to the marine foundation 1.

[0048] To achieve multi-layered protection in the far-field circumferential and vertical directions, and thus passively or actively alter the flow field structure in advance, the heights of multiple turbulence units 3 in each stage of the turbulence-disrupting assembly in this embodiment of the invention are consistent, while the heights of turbulence units 3 in adjacent stages of the turbulence-disrupting assembly differ. The height difference of turbulence units 3 in adjacent stages of the turbulence-disrupting assembly is designed according to the actual vertical velocity distribution of the water flow, ensuring that water flows at different heights are subject to turbulence, disrupting the continuity of the water flow in the vertical direction. Furthermore, the turbulence units 3 in adjacent stages of the turbulence-disrupting assembly are staggered in the circumferential direction. In this embodiment of the invention, the turbulence units 3 are radially distributed, with adjacent layers of turbulence units 3 staggered to form a continuous protective surface. On the same circumference, the angle between the water inlet directions of adjacent turbulence units 3 is dynamically adjusted according to the mainstream direction of the water flow and the shape of the marine foundation 1, allowing the water flow to be disturbed in different directions in the horizontal direction, further disrupting the structure of the scouring water flow. The protective device in this embodiment of the invention presents an overall spatial misalignment in the vertical direction and a planar misalignment in the circumferential direction.

[0049] The scour protection method corresponding to the marine basic scour protection device in this embodiment of the invention is as follows:

[0050] Step S1: Determine the extent of the scour zone 2 (potential scour pit) corresponding to marine foundation 1.

[0051] Based on the marine foundation type, substrate type, and flow field conditions, the potential extent of scour pits is predicted.

[0052] Step S2: Arrange the turbulence unit 3.

[0053] S2.1 Determine the circumferential layout boundary of the turbulence assembly formed by turbulence unit 3. Determine the internal layout boundary of the turbulence assembly based on the potential scour pit range, and determine the external layout boundary of the turbulence assembly based on the flow field intensity and the importance of the foundation.

[0054] S2.2 Determine the main circumferential orientation and density of individual disturbance units 3. Based on the ocean current rose diagram, flow field intensity, and spatial influence range of the sea area, assess and determine the main circumferential orientation of disturbance units 3 in each layer of disturbance components. Determine which direction to densely arrange and which direction to sparsely arrange them to improve the protection and power generation efficiency of the disturbance units 3. Furthermore, the outermost disturbance component is positioned facing the incoming flow direction. The outermost disturbance component first reduces the water flow velocity. The water flow reduced by the outermost disturbance component enters the next level of disturbance component through a diversion channel, and so on, reducing the velocity layer by layer to achieve a layered protection effect.

[0055] S2.3 Determine the number of layers of the turbulence-disrupting unit 3 along the height direction. Based on the water depth conditions and the influence range of the turbine 31, determine the number of layers of the turbine 31 along the height direction.

[0056] Step S3: Determine the operating mode of the turbulence unit 3 based on the scouring monitoring results.

[0057] S3.1, the initial mode of turbine 31 is set to minimum rotational resistance to ensure that it is in power generation mode under most operating conditions.

[0058] S3.2 If no scouring is detected when the water flow velocity is very low, it indicates that the scouring protection is effective. At this time, the water flow velocity is very low, and the turbine 31 is in a low-resistance power generation mode, which performs passive turbulence.

[0059] S3.3 As the water flow velocity increases, if scouring is detected, the rotational resistance of turbine 31 is increased, thereby reducing the water flow velocity through turbine 31 to enhance its turbulence effect, until no new scouring is detected. At this time, the water flow velocity is relatively low, and turbine 31 is in high-resistance power generation mode, performing passive turbulence.

[0060] S3.4 If new scouring is still detected as the water flow velocity increases, it indicates that increasing the rotational resistance of turbine 31 to passively turbulent the flow is ineffective. In this case, switch to active turbulence mode. Turbine 31 consumes electrical energy to rotate in the opposite direction, generating a flow field that counteracts the scouring water flow until no new scouring is detected. At this time, the water flow velocity is relatively high, and turbine 31 is in a low-speed reverse reversal mode that consumes electrical energy to actively turbulent the flow.

[0061] S3.5 If new scouring is still detected as the water flow velocity continues to increase, it means that the low-speed reverse rotation of turbine 31 has no effect on turbulence. Then, continue to increase the reverse rotation speed of turbine 31 until no new scouring is detected. At this time, the flow velocity is very high, and turbine 31 is in the power-consuming high-speed reverse rotation mode to actively turbulent the flow.

[0062] Operating process of passive electrical energy disturbance generated by disturbance unit 3 under low flow velocity conditions (S3.2, S3.3):

[0063] Under low flow conditions, the turbulence unit 3 operates in a passive turbulence mode that generates electricity. The water flow drives the turbine 31 to rotate, converting tidal energy into electrical energy. Moreover, the turbine 31 consumes the kinetic energy of the water flow, and the water flowing through the turbine 31 will flow towards the ocean foundation 1 at a lower speed, achieving a smooth transition of the flow field from the far end to the area around the foundation.

[0064] For a single turbulence unit 3, after the water flows through the turbine 31, a portion of the water flow follows... Figure 5 Path a in the middle is decelerated by the deceleration module, and then flows out to both sides at a significantly reduced velocity through the V-shaped diversion channel 33, before entering the next stage of the turbulence-inducing component; another part of the water flows along... Figure 5 After passing through turbine 31, path b moves upward and flows out through the second water flow channel 323. During this process, the kinetic energy of this part of the water is converted into gravitational potential energy, thereby reducing the flow velocity.

[0065] For the flow disturbance component, if the flow disturbance unit 3 is staggered along the circumferential and vertical directions to form a flow disturbance system, under low flow velocity conditions, the flow disturbance unit 3 mainly functions to generate electrical energy and passively decelerate the flow. The water flow is divided into three paths: one part along... Figure 6 Path ① in the middle, the water enters the first-stage turbulence assembly at a certain angle to the inlet direction of the turbulence unit 3. The water is hydraulically driven to rotate the turbine 31 to generate electricity. Then, the water flows out of the first-stage turbulence assembly through the V-shaped diversion channel 33 at a significantly reduced speed, and then enters the second-stage turbulence assembly for further deceleration. The other part flows along... Figure 6 Path ② in the middle, parallel to the deceleration direction of the turbulence unit 3, enters the first-stage turbulence assembly. The water is hydraulically driven to rotate the turbine 31 to generate electricity. Subsequently, the water flows out of the first-stage turbulence assembly through the V-shaped diversion channel 33 at a significantly reduced speed, and then enters the second-stage turbulence assembly for further deceleration. The remaining small portion of the water flows along... Figure 6 Path ③ in the middle has a certain angle with the water inlet direction of the turbulence unit 3 and directly enters the secondary turbulence component for deceleration. The multi-layer turbulence components work together to decelerate the water flow multiple times, achieving passive turbulence and multi-layer scour protection for the marine foundation 1.

[0066] Operating process of the active turbulence system consuming electrical energy under high flow velocity conditions (S3.4, S3.5):

[0067] Under high flow velocity conditions, the disturbance unit 3 operates in an active disturbance mode that consumes electrical energy. Driven by surplus electrical energy transmitted from the offshore wind turbine, the disturbance unit 3 rotates to form a continuous flow barrier opposite to the direction of the external water flow, thus actively causing disturbance. If the disturbance components formed by the disturbance unit 3 work together, they can form a continuous reverse flow barrier in both the circumferential and vertical directions, effectively isolating the external flow field from interfering with the inner region.

[0068] For a single turbulence unit 3, the turbine 31 uses the electrical energy of the wind turbine to rotate in the opposite direction, drawing in water from above through the second water flow channel 323 and generating an active counteracting flow against the external flow field. When the external water flow is parallel to the generated counteracting flow, the external water flow... Figure 7 Path a is forced to turn back, blocking external scouring water from entering the potential scouring pit area, thus achieving scouring protection for the marine foundation 1. When the external water flow and the generated countercurrent have a certain angle, they form a deflected combined flow that bypasses the disturbance unit 3, thereby achieving the effect of reducing the flow velocity and deflecting the flow direction of the disturbance unit 3. During this process, the near-field water flow of the turbine box 32 near the marine foundation 1 cannot pass through the deceleration module, which effectively isolates the interference to the flow field inside the potential scouring pit under high flow velocity conditions, i.e., during active disturbance and water intake.

[0069] For the flow disturbance component, if the flow disturbance unit 3 is staggered along the circumferential and vertical directions to form the flow disturbance component, it can achieve the dual functions of deceleration and flow diversion. The water flow is divided into three parts: one part along... Figure 8 The water flows along path ①, intersecting at a certain angle with the reverse flow generated by the outer ring primary disturbance component, forming a deflected flow that bypasses the marine foundation 1, achieving the effect of diverting external water flow; another part of the water flow follows... Figure 8 The water flows along path ②, perpendicularly intersecting with the reverse flow generated by the outer ring primary turbulence component, causing part of the water flow to turn back; the remaining small portion of the water flow continues along... Figure 8 Path ③ in the middle intersects with the reverse water flow generated by the secondary disturbance component at a certain angle, forming a deflected water flow that bypasses the marine foundation 1, achieving a second layer of protection. The multi-layer protection components work together to deflect or slow down the external scouring water flow, forming a continuous and stable "isolation wind curtain" effect. The potential scouring pit area forms a relatively calm water environment, thus providing scouring protection for the marine foundation 1.

[0070] This invention employs a multi-layered, circumferentially staggered flow-disrupting assembly deployed in the far-field region outside the potential scour pit for protection. This more effectively addresses water flows with varying velocities and directions, creating a relatively calm water environment in the near-field region, thereby suppressing the occurrence and spread of initial scour. This differs from conventional passive near-field protection. By placing the protection area in the far-field region outside the potential scour pit, this invention intervenes in the water flow in advance, altering its velocity and direction. The synergistic flow-disrupting effect of each layer of components forms a continuous and stable fluid barrier, resembling a "wind curtain," significantly reducing the water velocity flowing around the marine foundation 1. This invention actively or passively disrupts the water flow, weakening the hydrodynamic conditions leading to scour at the source. This reduces interference with the marine foundation 1 itself and alters the flow field on a larger spatial scale, thus achieving scour protection for the marine foundation 1. Furthermore, the far-field protection is more adaptable to the form and topography of the marine foundation 1.

[0071] This invention enables the simultaneous development and synergistic utilization of wind and tidal energy. Existing technologies often develop wind and tidal energy independently, failing to fully consider their synergistic effects and thus hindering comprehensive energy utilization. For example, during periods of high wind speeds, wind turbines frequently generate surplus electricity, resulting in some unused power and energy waste. Simultaneously, severe scouring of the marine foundation also occurs, preventing a rational development and utilization of the two. Conversely, during periods of low wind speeds, while scouring of the marine foundation is less severe, the power generation efficiency of wind turbines decreases significantly, leading to insufficient power supply. Furthermore, tidal energy resources are also not fully developed and utilized during these periods. The marine foundation 1 scour protection device of the present invention, when the flow velocity is low, the water flow can drive the turbine 31 to generate electricity. Under the premise of reducing the water flow velocity to achieve passive scour protection, it makes full use of the previously wasted tidal energy. When the flow velocity is high, the scour will be aggravated. At this time, the wind speed is generally high, and the offshore wind turbine will also generate more surplus electricity. The turbine 31 uses the surplus electricity of the wind turbine to rotate in the opposite direction to generate an active flow field to counteract the external water flow, thereby achieving the effect of active scour protection and making reasonable use of surplus wind energy resources.

[0072] This invention features a unique design for the flow disturbance unit 3. When the flow disturbance unit 3 is in a passive flow disturbance mode that generates electrical energy, the upward outflow velocity of the water through the second flow channel 323 is reduced. The V-shaped diversion channel 33, in conjunction with the deceleration module, guides the direction of the water flow and reduces its velocity, thus minimizing the direct scouring of the wake on the marine foundation 1. When the flow disturbance unit 3 is in an active flow disturbance mode that consumes electrical energy, the upper water flow enters the flow disturbance unit 3 through the second flow channel 323, forming a flow field that counteracts the scouring flow. The first flow channel 322 within the deceleration module is a unidirectional flow channel, allowing water to flow only from the inside of the flow disturbance unit 3 to the outside. This prevents the inner water flow from entering the flow disturbance unit 3 through the first flow channel 322, reducing interference with the inner flow field of the flow disturbance unit 3.

[0073] The above descriptions are merely a few embodiments of the present invention and are not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any modifications or alterations made by those skilled in the art without departing from the scope of the technical solution of the present invention using the disclosed technical content are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A marine basic scour protection device, characterized in that, It includes a wind turbine and a multi-stage turbulence assemblies surrounding the marine foundation and arranged from the outside in. The innermost turbulence assemblies are located outside the corresponding scour area of ​​the marine foundation. Each stage of the turbulence assemblies includes multiple turbulence units. Each spoiler unit includes a turbine housing, a turbine, and a reduction gear module; The turbine housing is open at the end furthest from the marine foundation, and the deceleration module is located at the end closest to the marine foundation. The turbine is installed inside the turbine housing and is used to generate electricity under the drive of the water flow when the water flow velocity is less than a threshold. The water flow through the turbine enters the deceleration module for deceleration. The wind turbine is connected to the turbine and is used to drive the turbine to rotate in the opposite direction when the water flow velocity is greater than or equal to the flow velocity threshold, so as to use the water flow from the turbine rotating in the opposite direction to counteract the external water flow. The deceleration module includes a first water flow channel and a deceleration submodule; The first water flow channel is fixedly connected to the end of the turbine box, and the first water flow channel is a one-way channel; The deceleration submodule is located on the side of the first water flow channel near the marine foundation and is used to decelerate the water flow output from the first water flow channel. Each turbulence unit also includes a V-shaped flow diversion channel; The V-shaped diversion channel is connected to the deceleration submodule.

2. The marine foundation scour protection device according to claim 1, characterized in that, In each level of the spoiler assembly, the height of multiple spoiler units is consistent, and the height of spoiler units in adjacent levels of the spoiler assembly is different.

3. The marine foundation scour protection device according to claim 1, characterized in that, The turbulence units in adjacent turbulence components are arranged in a circumferentially offset manner.

4. The marine foundation scour protection device according to claim 1, characterized in that, The deceleration submodule includes multiple deceleration groups arranged along the water flow direction.

5. The marine foundation scour protection device according to claim 1, characterized in that, Each spoiler unit also includes a bottom protector; The bottom protection is provided on the upper surface of the soil where the turbine is located.

6. The marine foundation scour protection device according to claim 1, characterized in that, A second water flow channel is provided on the wall of the turbine box.

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