A scour protection and automatic repair device for offshore wind turbine cylinder foundations

Abstract

The application discloses a kind of scour protection and automatic repair device of offshore wind power cylinder foundation, it is related to offshore wind turbine technical field, including protection mechanism and automatic repair mechanism;Protection mechanism includes multiple protection components;Protection component includes protection plate and pressure applicator;Each protection plate can be respectively rotated around each corresponding first axis and be arranged on the outer cylinder wall of offshore wind power cylinder foundation;Protection plate can be pressed on the seabed surface below protection plate;The output end of pressure applicator is used to apply a downward force to protection plate;Automatic repair mechanism includes controller, attitude monitor and grouting device;Attitude monitor is used to detect the attitude of each protection plate;Grouting device can discharge grouting filler;At least one grouting outlet is provided on the lower end surface of protection plate in horizontal state;Controller is connected with attitude monitor, grouting device and each pressure applicator in communication.It can reduce environmental constraints, and can realize fast, efficient and low-cost protection and automatic repair.

Description

Technical Field

[0001] This invention relates to the field of offshore wind turbine technology, and in particular to an anti-scouring and automatic repair device for offshore wind turbine cylindrical foundations. Background Technology

[0002] Offshore wind turbine cylindrical foundations are a type of cylindrical foundation with an open bottom and a sealed top. Compared with traditional pile foundations and pier foundations, they have better overturning resistance and bearing capacity. In addition, cylindrical foundations have many advantages such as convenient installation, short construction period, and recyclability.

[0003] Long-term wave and current action can create scour pits on the seabed around the suction turbine foundation. This weakens the lateral soil constraint on the foundation, reducing its bearing capacity and threatening the safety of the wind turbine. Monitoring and repairing scour pits located on the seabed typically requires complex specialized equipment, resulting in high costs; moreover, maintenance efficiency is low due to weather and sea conditions. Summary of the Invention

[0004] The purpose of this invention is to provide an anti-scour protection and automatic repair device for offshore wind turbine cylindrical foundations, so as to solve the problems existing in the prior art, reduce environmental restrictions, and achieve rapid, efficient and low-cost protection and automatic repair.

[0005] To achieve the above objectives, the present invention provides the following solution:

[0006] This invention provides an anti-scouring and automatic repair device for offshore wind turbine cylindrical foundations, comprising a protection mechanism and an automatic repair mechanism. The protection mechanism includes multiple protection components. Each protection component is circumferentially distributed around the axis of the outer wall of the offshore wind turbine cylindrical foundation. Each protection component includes a protective plate and a pressure applicator. Each protective plate is rotatably mounted on the outer wall of the offshore wind turbine cylindrical foundation around its corresponding first axis, which is perpendicular to the axis of the offshore wind turbine cylindrical foundation. The protective plate can press against the seabed surface below it. The output end of the pressure applicator is connected to the protective plate, and the output end of the pressure applicator is used to apply a downward pressure force to the protective plate in the rotational direction of the protective plate around the first axis. The downward pressure force can cause the protective plate to move towards the seabed around the first axis. One side of the bed surface rotates; the automatic repair mechanism includes a controller, an attitude monitor, and a grouting device; the attitude monitor is used to detect the attitude of each of the protective plates; the grouting device has a total output port, which can discharge the grouting filler; when in a horizontal state, the lower end face of the protective plate is provided with at least one grouting outlet, and each grouting outlet can be connected to the total output port; the controller is communicatively connected to the attitude monitor, the grouting device, and each of the pressure applicators; when the attitude of the protective plate detected by the attitude monitor reaches a threshold attitude, the controller can drive the protective plate to a horizontal attitude through the corresponding pressure applicator, and the controller can control the grouting device to discharge the grouting filler through each of the grouting outlets on the protective plate.

[0007] Preferably, the protective mechanism includes an annular fixing plate, which is used to fix and sleeve the outer side of the outer cylinder wall of the offshore wind turbine cylindrical foundation; each of the protective components is arranged on the annular fixing plate around the axis of the outer cylinder wall of the offshore wind turbine cylindrical foundation, and the protective plate is rotatably arranged on the annular fixing plate around the first axis; in the circumferential direction around the axis of the outer cylinder wall of the offshore wind turbine cylindrical foundation, side baffles are respectively fixedly arranged on both sides of the protective plate; in the axial direction of the annular fixing plate, the end of the side baffle away from the axis of the annular fixing plate is lower than the end of the protective plate away from the axis of the annular fixing plate; the filling material discharged from each of the filling outlets can overflow and solidify on the side of the protective plate away from the axis of the annular fixing plate to form an auxiliary filling anti-erosion body.

[0008] Preferably, when the protective plate is in a horizontal state, an inner pressure sensor and an outer pressure sensor are also fixedly installed on the lower end face; the inner pressure sensor is located on the side of the outer pressure sensor close to the axis of the outer cylinder wall of the offshore wind turbine cylindrical foundation; both the inner pressure sensor and the outer pressure sensor are communicatively connected to the controller.

[0009] Preferably, the grouting device includes a mixing water storage tank, a mixing and stirring tank, and multiple raw material storage tanks; the mixing water storage tank stores mixed water, and each of the raw material storage tanks stores various raw materials for preparing the grouting filler; the mixing and stirring tank has a mixing chamber; the outlet of the mixing water storage tank is connected to the inlet of a first pump body; the outlet of each of the raw material storage tanks is connected to the inlet of a corresponding second pump body; a stirrer is provided inside the mixing and stirring tank; the outlet of the first pump body and the outlets of each of the second pump bodies are all connected to the inlet of the mixing and stirring tank; the mixing and stirring tank... The outlet of the first pump is connected to the inlet of the third pump body, and the outlet of the third pump body forms the total output port. The outlet of the third pump body is connected to a slurry main pipe, and the end of the slurry main pipe is connected to multiple slurry branch pipes. A slurry distribution pipe is fixed on the protective plate, and the slurry distribution pipe is connected to each of the injection outlets on the protective plate. Each slurry branch pipe corresponds to one of the protective plates, and the outlet of each slurry branch pipe is connected to the inlet of the corresponding slurry distribution pipe through a flexible pipe. The controller is communicatively connected to the agitator, the first pump body, the third pump body, and each of the second pump bodies.

[0010] Preferably, the mixing water storage tank, the mixing and stirring tank, and each of the raw material storage tanks are all fixedly installed on the columns of the offshore wind turbine cylindrical foundation located in the seawater; each of the mixing water storage tanks and each of the raw material storage tanks is provided with a replenishment pipe, and the upper opening of each replenishment pipe is located above the sea surface; and the mixing and stirring tank is provided with a vent pipe, the upper opening of which is located above the sea surface.

[0011] Preferably, the attitude monitor includes multiple angle monitoring sensors, each corresponding to one of the protective plates, and each angle monitoring sensor is used to monitor the angle between the corresponding protective plate and the horizontal plane; each angle monitoring sensor is communicatively connected to the controller.

[0012] Preferably, the outlet of the main slurry pipe is connected to an annular supply pipe, and each of the slurry branch pipes is connected to the annular supply pipe.

[0013] Preferably, the protective plate is connected to the annular fixed plate via a rotating connector; the rotating connector includes a first connector and a second connector; the first connector is fixedly mounted on the outer end of the annular fixed plate away from the outer wall axis of the offshore wind turbine cylindrical foundation, and the second connector is fixedly mounted on the protective plate, and the second connector is rotatably mounted on the first connector around the first axis.

[0014] Preferably, when the protective plate is in a horizontal position, along the axial direction of the outer cylinder wall of the offshore wind turbine cylindrical foundation, the end of the side baffle away from the axis of the annular fixed plate is the first end, and the end of the side baffle close to the axis of the annular fixed plate is the second end. The distance between the first end and the lower end face of the protective plate is greater than the distance between the second end and the lower end face of the protective plate.

[0015] Preferably, at least one through-hole is provided on one end of the side baffle near the protective plate, and the through-hole communicates with the space between the two side baffles on the protective plate.

[0016] The present invention achieves the following technical effects compared to the prior art:

[0017] The scour protection and automatic repair device for offshore wind turbine cylindrical foundations provided by this invention, by employing a protective mechanism for scour protection and an automatic repair mechanism, can monitor and automatically repair scour pits around the offshore wind turbine cylindrical foundation. When a scour pit forms under the protective plate, the protective plate, under the downward pressure from the pressure applicator, can rotate towards the seabed to prevent the scour pit from expanding towards the inner side of the outer cylindrical wall of the offshore wind turbine cylindrical foundation. This reduces the problem of excessively large scour pits weakening the lateral soil constraint of the foundation. Furthermore, the attitude monitor can monitor the attitude of the protective plate, using the current attitude of the protective plate to represent the size of the scour pit below it. Monitoring: Due to the length of the protective plate, a wider range of scour pits can be monitored within a certain area below it. The controller can monitor the size of the scour pit based on the attitude of the protective plate. When the size reaches a set monitoring threshold, the controller can control the grouting device to first adjust the protective plate to a horizontal state. The grouting material provided by the grouting device falls into the scour pit below the protective plate through the grouting outlet on the protective plate, achieving automatic repair and reducing the weakening of the lateral soil constraint effect of the foundation due to excessively large scour pits. The downward pressure provided by the pressure applicator presses the protective plate tightly against the seabed surface. The protective plate can rotate around a first axis perpendicular to the axis of the wind turbine cylindrical foundation, and can adjust according to the seabed surface. The system adjusts its angle by rotating to maintain a good fit with the seabed surface, effectively covering the protected area, regardless of the terrain, slope, or other terrain conditions. Monitoring and repair processes are automated and unaffected by weather or sea conditions. Multiple protective components are distributed circumferentially around the outer wall of the offshore wind turbine's cylindrical foundation. Each protective panel can be independently adjusted for attitude and repaired. When scour pits appear in a localized area, only the corresponding protective panel needs to be operated, eliminating the need for large-scale treatment of the entire foundation's perimeter, significantly improving the efficiency of protection and repair. An attitude monitor tracks the protective panel's attitude in real time. Once a threshold attitude is reached, the information is quickly transmitted to the controller. Upon receiving the signal, the controller immediately drives the protective panel to a horizontal position via a pressure device. Simultaneously, the grouting device is activated for injection and repair. The entire process is rapid, allowing for timely intervention in the early stages of seabed scour to prevent further deterioration. The protective and automatic repair mechanisms have relatively few components and a simple structure, reducing manufacturing and installation costs. This simple structure also lowers the probability of malfunctions, reduces maintenance costs and downtime, and improves the economic efficiency of the device. The device's automatic monitoring, adjustment, and repair functions reduce the workload of manual inspection and maintenance, lowering labor costs. Furthermore, it can promptly detect and address seabed scour problems, avoiding serious consequences such as foundation damage caused by scour, thereby saving potentially high costs associated with large-scale repairs or foundation replacements. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the overall structure of the anti-scouring protection and automatic repair device for the cylindrical foundation of offshore wind power provided by the present invention;

[0020] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0021] Figure 3 A top view of the anti-scouring protection and automatic repair device for the cylindrical foundation of offshore wind turbines provided by the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the protective plate and side baffle in the anti-scour protection and automatic repair device for the cylindrical foundation of offshore wind power provided by the present invention.

[0023] In the picture:

[0024] 10-Outer cylinder wall; 11-Upright column; 12-Diagonal brace;

[0025] 20-Annular fixed plate; 21-Pressure applicator; 211-Lifting boom; 212-Motor; 22-Rotating connector; 221-First connector; 222-Second connector;

[0026] 30-Protective plate; 31-Side baffle; 311-Overflow hole; 32-Injection outlet; 33-Inner pressure sensor; 34-Outer pressure sensor; 35-Slurry distribution pipe; 36-Attitude monitor;

[0027] 40-Grouting device; 41-Main grouting pipe; 42-Annular supply pipe; 43-Branch grouting pipe; 44-Flexible pipe. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] The purpose of this invention is to provide an anti-scour protection and automatic repair device for offshore wind turbine cylindrical foundations, so as to solve the problems existing in the prior art, reduce environmental restrictions, and achieve rapid, efficient and low-cost protection and automatic repair.

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Example

[0031] This embodiment provides an anti-scouring and automatic repair device for offshore wind turbine cylindrical foundations, such as... Figures 1-4 As shown, the structure includes a protective mechanism and an automatic repair mechanism. The protective mechanism includes multiple protective components. Each protective component is circumferentially distributed around the axis of the outer cylindrical wall 10 of the offshore wind turbine foundation. Each protective component includes a protective plate 30 and a pressure device 21. Each protective plate 30 is rotatably mounted on the outer cylindrical wall 10 of the offshore wind turbine foundation around its corresponding first axis, which is perpendicular to the axis of the offshore wind turbine foundation. The protective plate 30 can press against the seabed surface below it. The output end of the pressure device 21 is connected to the protective plate 30, and the output end of the pressure device 21 is used to apply a downward pressure force to the protective plate 30 in the rotation direction of the protective plate 30 around the first axis. (The pressure device 21 may include a lifting arm 211 and a motor 212. The motor 212 controls the rotation of the lifting arm 211 around an axis. The lifting arm 211 is connected to the protective plate 30 by a connecting rod, and the end of the connecting rod is connected to the protective plate 30 and the lifting arm 21.) All components are hinged; the linkage can be a telescopic rod. The downward pressure can cause the protective plate 30 to rotate around the first axis towards the side closer to the seabed. The automatic repair mechanism includes a controller, an attitude monitor 36, and a grouting device 40. The attitude monitor 36 is used to detect the attitude of each protective plate 30. The grouting device 40 has a total output port that can discharge the grouting filler. When the protective plate 30 is in a horizontal state, at least one grouting outlet 32 ​​is provided on the lower end face, and each grouting outlet 32 ​​can be connected to the total output port. The controller is communicatively connected to the attitude monitor 36, the grouting device 40, and each pressure device 21. When the attitude of the protective plate 30 detected by the attitude monitor 36 reaches the threshold attitude, the controller can drive the protective plate 30 to a horizontal attitude through the corresponding pressure device 21, and the controller can control the grouting device 40 to discharge the grouting filler through each grouting outlet 32 ​​on the protective plate 30.

[0032] By employing a protective mechanism to prevent scour, coupled with an automatic repair mechanism, the monitoring and automatic repair of scour pits around the offshore wind turbine cylindrical foundation can be achieved. When a scour pit forms below the protective plate 30, the protective plate 30, under the downward pressure from the pressure applicator 21, can rotate towards the seabed to prevent the scour pit from expanding towards the inner side of the outer cylindrical wall 10 of the offshore wind turbine cylindrical foundation. This reduces the problem of excessively large scour pits weakening the lateral soil constraint of the foundation. Furthermore, the attitude monitor 36 can monitor the attitude of the protective plate 30, using its current attitude as a substitute for monitoring the size of the scour pit below it. Because the protective plate 30 has a certain length, it can... The system provides a wider monitoring range for scour pits within a certain area below. The controller monitors the size of the scour pit based on the attitude of the protective plate 30. When the scour pit reaches a set monitoring threshold, the controller activates the grouting device 40 to adjust the protective plate 30 to a horizontal position. The grouting material provided by the grouting device 40 falls through the grouting outlet 32 ​​on the protective plate 30 into the scour pit below, achieving automatic repair and reducing the weakening of the lateral soil constraint effect caused by an excessively large scour pit. The downward pressure provided by the pressure applicator 21 presses the protective plate 30 firmly against the seabed surface. The protective plate 30 can rotate around a first axis perpendicular to the axis of the wind turbine cylindrical foundation, adapting to the undulations and slope of the seabed. Depending on the terrain, the device adjusts its angle by rotating to maintain a good fit with the seabed, effectively covering the protected area. Monitoring and repair processes are automated and unaffected by weather or sea conditions. Multiple protective components are distributed circumferentially around the outer wall of the offshore wind turbine cylindrical foundation. Each protective plate 30 can be independently adjusted in attitude and repaired by injection. When scour pits appear in a localized area, only the corresponding protective plate 30 needs to be operated, eliminating the need for large-scale treatment of the entire foundation area, significantly improving the efficiency of protection and repair. The attitude monitor 36 monitors the attitude of the protective plate 30 in real time. Once a threshold attitude is reached, it quickly transmits the information to the controller. Upon receiving the signal, the controller immediately drives the protective plate 30 to... The device operates in a horizontal position and simultaneously activates the grouting device 40 for grouting repair. The entire process is rapid, allowing for timely intervention in the early stages of seabed scour to prevent further deterioration. The protective and automatic repair mechanisms have relatively few components and a simple structure, reducing manufacturing and installation costs. This simple structure also lowers the probability of malfunctions, reduces maintenance costs and downtime, and improves the device's economic efficiency. The device's automatic monitoring, adjustment, and repair functions reduce the workload of manual inspection and maintenance, lowering labor costs. Furthermore, it can promptly detect and address seabed scour problems, avoiding serious consequences such as foundation damage caused by scour, thereby saving potentially high costs associated with large-scale repairs or foundation replacements.

[0033] The following are the relevant instructions regarding the setup of the protective mechanism:

[0034] Specifically, a protective plate 30 can be provided with four injection outlets 32.

[0035] Among the optional solutions in this embodiment, the more preferred one is as follows: Figure 1 and Figure 3 As shown, the protective mechanism includes an annular fixing plate 20, which is used to fix and sleeve the outer side of the outer cylinder wall 10 of the offshore wind turbine cylindrical foundation. Each protective component is arranged on the annular fixing plate 20 around the axis of the outer cylinder wall 10 of the offshore wind turbine cylindrical foundation. The protective plate 30 is rotatably arranged on the annular fixing plate 20 around the first axis. In the circumferential direction around the axis of the outer cylinder wall 10 of the offshore wind turbine cylindrical foundation, side baffles 31 are fixedly arranged on both sides of the protective plate 30. In the axial direction of the annular fixing plate 20, the end of the side baffle 31 away from the axis of the annular fixing plate 20 is lower than the end of the protective plate 30 away from the axis of the annular fixing plate 20. The filling material discharged from each filling outlet 32 ​​can overflow and solidify on the side of the protective plate 30 away from the axis of the annular fixing plate 20 to form an auxiliary filling anti-erosion body. The side baffle 31 can be used to control the area requiring grouting and prevent the flow of solidified soil to other areas. When the automatic repair mechanism performs grouting, the side baffle 31 can prevent the grout from flowing away from the side of the protective plate 30, allowing the grout to be filled more concentratedly in the area below the protective plate 30 that needs repair, improving the repair effect and ensuring that the structural strength of the seabed is effectively restored. The annular fixing plate 20 connects multiple protective components into a whole, allowing the protective mechanism to be more evenly distributed on the outer side of the outer wall 10 of the offshore wind turbine cylindrical foundation, dispersing external forces such as seawater pressure to the entire annular structure, avoiding excessive local stress, enhancing the stability of the connection between the entire protective device and the cylindrical foundation, and improving the reliability and service life of the protective device. Furthermore, the side baffle 31 The end of the protective plate 30 that is away from the axis of the annular fixed plate 20 is lower than the end of the protective plate 30 that is away from the axis of the annular fixed plate 20. When the protective plate 30 is in a horizontal state and is undergoing automatic repair, the filling material can fill the scour pit below the protective plate 30. The excess filling material can overflow from the opening formed by the outer ends of the protective plate 30 and the two side baffles 31, and form excess filling material on the outside of the opening. That is, an auxiliary filling anti-scour body is formed on the side of the filled scour pit away from the axis of the outer cylinder wall 10 of the offshore wind turbine cylindrical foundation. Since the location of the scour pit means that the scour at that location is stronger than that in other areas, the auxiliary filling anti-scour body formed by this setting can form a stronger anti-scour effect after the repair is completed.

[0036] Specifically, the protective plate 30 can be formed from a portion cut off from a ring plate.

[0037] Among the optional solutions in this embodiment, the more preferred one is as follows: Figure 1 and Figure 2 As shown, the protective plate 30 is connected to the annular fixed plate 20 via a rotating connector 22. The rotating connector 22 includes a first connector 221 and a second connector 222. The first connector 221 is fixedly mounted on the outer end of the annular fixed plate 20 away from the axis of the outer wall 10 of the offshore wind turbine cylindrical foundation. The second connector 222 is fixedly mounted on the protective plate 30 and is rotatably mounted on the first connector 221 around a first axis. The design of the rotating connector 22 provides a reliable connection between the protective plate 30 and the annular fixed plate 20. The fixed arrangement of the first connector 221 and the second connector 222 ensures that the connection between them will not easily loosen or fall off during the rotation of the protective plate 30. This modular design of the rotating connector 22 simplifies the installation process of the protective plate 30 and the annular fixed plate 20. During installation, simply fix the first connector 221 to the annular fixed plate 20, fix the second connector 222 to the protective plate 30, and then rotate the second connector 222 to the first connector 221. When maintaining the device or replacing the protective plate 30, the rotating connector 22 can also be easily disassembled for corresponding repair or replacement operations, reducing maintenance costs and difficulty.

[0038] Among the optional solutions in this embodiment, the more preferred one is as follows: Figures 1-4 As shown, with the protective plate 30 in a horizontal position, along the axial direction of the outer cylindrical wall 10 of the offshore wind turbine foundation, the end of the side baffle 31 furthest from the axis of the annular fixing plate 20 is the first end, and the end of the side baffle 31 closest to the axis of the annular fixing plate 20 is the second end. The distance between the first end and the lower end face of the protective plate 30 is greater than the distance between the second end and the lower end face of the protective plate 30. During the automatic repair process, when the grouting device 40 discharges the grouting filler through the grouting outlet 32 ​​on the protective plate 30, the inclined structure of the side baffle 31 can guide the filler to flow towards the area to be repaired. Furthermore, because the distance between the second end and the lower end face of the protective plate 30 is small, i.e., the length of the side baffle 31 at this position is short, when the protective plate 30 is in a horizontal state, the grouting filler forms more solidified material on the side close to the outer cylindrical wall 10 of the offshore wind turbine foundation, effectively enhancing the stability of the foundation.

[0039] Among the optional solutions in this embodiment, the more preferred one is as follows: Figure 4As shown, at least one through-hole grout 311 is provided on the end of the side baffle 31 near the protective plate 30, and the grout 311 is connected to the space between the two side baffles 31 on the protective plate 30. The grout 311 allows the remaining grout in the pipe to be discharged outside the repair area after the repair is completed. When the amount of filling material reaches a certain level, the excess grout will overflow through the grout 311, avoiding over-grouting in a certain area below the protective plate 30, which would lead to grout waste or uneven seabed surface, thus ensuring the accuracy and efficiency of the repair process. The filling material discharged from the grout 311 forms a certain accumulation and solidification at the connection between the side baffle 31 and the protective plate 30, which is equivalent to adding extra reinforcing material at the connection between the circumferential and adjacent sides, making them less prone to loosening or falling off when subjected to external forces such as waves and currents over a long period of time, thus ensuring the integrity of the protective structure.

[0040] The following are the instructions regarding the automatic repair mechanism:

[0041] Specifically, the filling material used is grouting fluidized solidified soil.

[0042] Among the optional solutions in this embodiment, the more preferred one is as follows: Figures 1-4 As shown, when in a horizontal position, the lower end face of the protective plate 30 is also fixedly equipped with an inner pressure sensor 33 and an outer pressure sensor 34; the inner pressure sensor 33 is located on the side of the outer pressure sensor 34 near the axis of the outer cylinder wall 10 of the offshore wind turbine cylindrical foundation; both the inner pressure sensor 33 and the outer pressure sensor 34 are communicatively connected to the controller. The control of the repair grouting is achieved through the inner pressure sensor 33 and the outer pressure sensor 34, resulting in more precise control.

[0043] Specifically, both the inner pressure sensor 33 and the outer pressure sensor 34 are earth pressure gauges.

[0044] Specifically, when repairing the scour pit, the grouting device 40 stops discharging grout 10 seconds after the surrounding soil pressure corresponding to the inner pressure sensor 33 and the outer pressure sensor 34 is not zero.

[0045] In the optional embodiments of this example, a preferred embodiment includes an attitude monitor 36 comprising multiple angle monitoring sensors, each corresponding to a protective plate 30, and each angle monitoring sensor used to monitor the angle between the corresponding protective plate 30 and the horizontal plane; each angle monitoring sensor is communicatively connected to the controller. Multiple angle monitoring sensors correspond to each protective plate 30, enabling comprehensive monitoring of the entire protective device's status. When the angle of a certain protective plate 30 changes, the controller can comprehensively judge and control the corresponding rotating connector 22 based on the angle information of other protective plates 30 and the overall protection requirements to adjust the protective plate 30; the angle monitoring sensors can monitor the angle between the protective plate 30 and the horizontal plane in real time, accurately obtaining the attitude information of the protective plate 30.

[0046] Specifically, the angle monitoring sensor is existing technology, and its setting method to achieve the angle between the upper or lower plane of the protective plate 30 and the horizontal plane is the same as the existing setting method, so it will not be described in detail here.

[0047] Among the optional solutions in this embodiment, the more preferred one is as follows: Figure 1 and Figure 3 As shown, the outlet of the main grouting pipe 41 is connected to an annular supply pipe 42, and various grouting branch pipes 43 are connected to the annular supply pipe 42. The grouting branch pipes 43 are connected to the annular supply pipe 42, and the position and number of the grouting branch pipes 43 can be flexibly arranged according to the specific shape and size of the protected area. For the circular structure of offshore wind turbine cylindrical foundations, the annular supply pipe 42 can conveniently deliver repair materials to the seabed around the foundation from multiple directions, improving the adaptability and coverage of the device.

[0048] The following are the relevant settings for the grouting device 40:

[0049] Specifically, the grouting device 40 can be any existing structure that can achieve its function, including but not limited to the solutions given below.

[0050] In a preferred embodiment, the grouting device 40 includes a mixing water storage tank, a mixing and stirring tank, and multiple raw material storage tanks. The mixing water storage tank stores mixed water, and each raw material storage tank stores various raw materials for preparing the grouting filler. The mixing and stirring tank has a mixing chamber. The outlet of the mixing water storage tank is connected to the inlet of the first pump body. The outlet of each raw material storage tank is connected to the inlet of a corresponding second pump body. A stirrer is installed inside the mixing and stirring tank. The outlet of the first pump body and the outlets of each second pump body are connected to the inlet of the mixing and stirring tank. The outlet of the mixing and stirring tank... The system is connected to the inlet of the third pump body, and the outlet of the third pump body forms a total output port. The outlet of the third pump body is connected to a slurry main pipe 41, and the end of the slurry main pipe 41 is connected to multiple slurry branch pipes 43. A slurry distribution pipe 35 is fixed on the protective plate 30, and the slurry distribution pipe 35 is connected to each injection outlet 32 ​​on the protective plate 30. The slurry branch pipes 43 correspond one-to-one with the protective plate 30, and the outlet of the slurry branch pipe 43 is connected to the inlet of the corresponding slurry distribution pipe 35 through a flexible pipe 44 (flexible corrugated pipe, etc.). The controller is communicatively connected to the agitator, the first pump body, the third pump body, and each second pump body. Multiple raw material storage cylinders store various raw materials for preparing the filling material. These cylinders are connected to each of the second pump bodies via a controller, allowing for precise control of the delivery rate of each raw material. This ensures accurate formulation of the filling material's composition and guarantees its performance stability and consistency. A mixing water storage cylinder stores mixing water and is connected to a mixing drum via a first pump body. This also enables precise control of the mixing water usage, ensuring that parameters such as the water-cement ratio of the filling material meet design requirements, thereby improving its strength and erosion resistance. The outlet of the mixing drum is connected to a main slurry pipe 41 via a third pump body. The main slurry pipe 41 is then connected to multiple branch slurry pipes 43. This structure allows the prepared filling material to be delivered to the main pump body. The filling material is efficiently delivered to the corresponding positions of each protective plate 30; the flexible tube 44 increases the flexibility of the grout delivery system; the controller is communicatively connected to the agitator, the first pump body, the third pump body, and each second pump body, realizing the automated control of the entire grouting process. Through preset programs and parameters, the controller can accurately control the operation of each component according to actual needs, such as delivering raw materials and mixed water according to the set ratio, controlling the mixing time and speed, and adjusting the flow rate and pressure of grout delivery. This not only improves the efficiency and accuracy of grouting operations, but also reduces the errors and uncertainties caused by manual operation, and also facilitates remote monitoring and management, reducing operation and maintenance costs.

[0051] Specifically, premixed fluidized solidified soil is used to precisely repair and fill the areas that need repair.

[0052] Specifically, after the repair and flushing pit is completed, the first pump can be controlled separately by the controller to use the water in the mixed water storage tank as high-pressure cleaning water to flush the residual grouting filler in each pipeline, so that it can be discharged in time and prevented from solidifying and clogging the pipeline.

[0053] In the optional schemes of this embodiment, it is more preferred that the mixing water storage tank, the mixing and stirring tank, and each raw material storage tank are all fixedly installed on the column 11 of the offshore wind turbine cylindrical foundation located in the seawater; each mixing water storage tank and each raw material storage tank is provided with a supplementary addition pipe, and the upper opening of each supplementary addition pipe is located above the sea surface; and the mixing and stirring tank is provided with a vent pipe, the upper opening of which is located above the sea surface. The mixing water storage tank, mixing drum, and various raw material storage tanks are fixed to the column 11 of the offshore wind turbine cylindrical foundation, which is located in the seawater. This effectively utilizes the space around the column 11, avoiding the need to set up storage and mixing equipment separately on the seabed or other locations, reducing the occupation of seabed space, and facilitating equipment installation and maintenance. The replenishment pipes on the mixing water storage tank and each raw material storage tank have their upper openings above the sea surface, allowing staff to replenish the mixing water and raw materials above the sea surface. This eliminates the need for diving or using special underwater equipment, reducing the difficulty and cost of replenishment and improving the efficiency and safety of replenishment. The mixing drum is equipped with a vent pipe with its upper opening above the sea surface, ensuring that the inside of the mixing drum is connected to the outside atmosphere and maintaining normal air pressure balance. During the mixing process, this avoids problems caused by pressure changes inside the drum, such as poor delivery of raw materials and mixing water, and excessive load on the mixer. It also helps to improve the mixing effect and the quality of the filling material.

[0054] Regarding other related settings:

[0055] Specifically, since this device is used in seawater, all parts are made of corrosion-resistant materials, and each component is designed to be waterproof, as well as the necessary sealing of each connection of the grouting pipeline.

[0056] Specifically, necessary valves, such as electrically controlled valves, can be installed on each pipeline in the grouting device. These valves are connected to the controller to achieve more precise and reliable control.

[0057] Specifically, the offshore wind turbine cylindrical foundation includes an outer cylindrical wall 10, columns 11, and multiple diagonal braces 12, which are existing structures and will not be described in detail here.

[0058] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A device for scour protection and automatic repair of offshore wind turbine cylindrical foundations, characterized in that: Includes protective mechanisms and self-repair mechanisms; The protective mechanism includes multiple protective components; each protective component is circumferentially distributed around the axis of the outer wall of the offshore wind turbine cylindrical foundation; each protective component includes a protective plate and a pressure applicator; each protective plate is rotatably mounted on the outer wall of the offshore wind turbine cylindrical foundation around its corresponding first axis, the first axis being perpendicular to the axis of the offshore wind turbine cylindrical foundation; the protective plate is capable of pressing against the seabed surface below the protective plate; the output end of the pressure applicator is connected to the protective plate, and the output end of the pressure applicator is used to apply a downward pressing force to the protective plate in the rotation direction of the protective plate around the first axis, the downward pressing force enabling the protective plate to rotate around the first axis towards the side closer to the seabed surface; The automatic repair mechanism includes a controller, a posture monitor, and a grouting device; the posture monitor is used to detect the posture of each of the protective plates; the grouting device has a main output port, which can discharge the grouting filler; when in a horizontal state, at least one grouting outlet is provided on the lower end face of the protective plate, and each of the grouting outlets can be connected to the main output port; The controller is communicatively connected to the attitude monitor, the grouting device, and each of the pressure applicators. When the attitude monitor detects that the attitude of the protective plate reaches a threshold attitude, the controller can drive the protective plate to a horizontal attitude through the corresponding pressure applicator, and the controller can control the grouting device to discharge the grouting filler through each of the grouting outlets on the protective plate.

2. The scour protection and automatic repair device for offshore wind turbine cylindrical foundations according to claim 1, characterized in that: The protective mechanism includes an annular fixing plate, which is used to fix and sleeve the outer side of the outer cylinder wall of the offshore wind turbine cylindrical foundation; each of the protective components is arranged on the annular fixing plate around the axis of the outer cylinder wall of the offshore wind turbine cylindrical foundation, and the protective plate is rotatably arranged on the annular fixing plate around the first axis. In the circumferential direction around the outer cylinder wall axis of the offshore wind turbine cylindrical foundation, side baffles are fixedly installed on both sides of the protective plate; in the axial direction of the annular fixed plate, the end of the side baffle away from the axis of the annular fixed plate is lower than the end of the protective plate away from the axis of the annular fixed plate. The filling material discharged from each of the filling outlets can overflow and solidify on the side of the protective plate away from the axis of the annular fixed plate to form an auxiliary filling anti-erosion body.

3. The scour protection and automatic repair device for offshore wind turbine cylindrical foundations according to claim 1, characterized in that: When the protective plate is in a horizontal position, an inner pressure sensor and an outer pressure sensor are also fixedly installed on the lower end surface. The inner pressure sensor is located on the side of the outer pressure sensor that is close to the axis of the outer cylinder wall of the offshore wind turbine cylindrical foundation. Both the inner pressure sensor and the outer pressure sensor are communicatively connected to the controller.

4. The anti-scouring protection and automatic repair device for offshore wind turbine cylindrical foundations according to claim 1, characterized in that: The grouting device includes a mixing water storage tank, a mixing and stirring tank, and multiple raw material storage tanks; The mixed water storage cylinder stores mixed water, and each of the raw material storage cylinders is used to store various raw materials for preparing the injection filler; the mixing and stirring cylinder has a mixing chamber. The outlet of the mixed water storage tank is connected to the inlet of the first pump body; The outlet of each of the raw material storage cylinders is connected to the inlet of a corresponding second pump body; A stirrer is installed inside the mixing drum; the outlet of the first pump body and the outlets of each of the second pump bodies are connected to the inlet of the mixing drum; the outlet of the mixing drum is connected to the inlet of the third pump body, and the outlet of the third pump body forms the main output port; the outlet of the third pump body is connected to a slurry delivery main pipe, and the end of the slurry delivery main pipe is connected to multiple slurry delivery branch pipes; a slurry delivery distribution pipe is fixed on the protective plate, and the slurry delivery distribution pipe is connected to each of the injection outlets on the protective plate; The grout delivery branch pipe corresponds one-to-one with the protective plate, and the outlet of the grout delivery branch pipe is connected to the inlet of the corresponding grout delivery distribution pipe through a flexible pipe; The controller is communicatively connected to the stirrer, the first pump body, the third pump body, and each of the second pump bodies.

5. The anti-scouring protection and automatic repair device for offshore wind turbine cylindrical foundations according to claim 4, characterized in that: The mixing water storage tank, the mixing and stirring tank, and each of the raw material storage tanks are all fixedly installed on the columns of the offshore wind turbine cylindrical foundation located in the seawater. Each of the mixed water storage cylinders and each of the raw material storage cylinders is equipped with a replenishment pipe, and the upper opening of each replenishment pipe is located above the sea surface; and the mixing and stirring cylinder is equipped with a vent pipe, the upper opening of which is located above the sea surface.

6. The scour protection and automatic repair device for offshore wind turbine cylindrical foundations according to claim 1, characterized in that: The attitude monitor includes multiple angle monitoring sensors, each of which corresponds to a protective plate, and each angle monitoring sensor is used to monitor the angle between the corresponding protective plate and the horizontal plane. Each of the angle monitoring sensors is communicatively connected to the controller.

7. The scour protection and automatic repair device for offshore wind turbine cylindrical foundations according to claim 4, characterized in that: The outlet of the main slurry pipe is connected to an annular supply pipe, and each of the slurry branch pipes is connected to the annular supply pipe.

8. The scour protection and automatic repair device for offshore wind turbine cylindrical foundations according to claim 2, characterized in that: The protective plate is connected to the annular fixed plate via a rotating connector; The rotating connector includes a first connector and a second connector; the first connector is fixedly mounted on the outer end of the outer wall of the annular fixed plate away from the axis of the outer wall of the offshore wind turbine cylindrical foundation, and the second connector is fixedly mounted on the protective plate, and the second connector is rotatably mounted on the first connector around the first axis.

9. The scour protection and automatic repair device for offshore wind turbine cylindrical foundations according to claim 2, characterized in that: With the protective plate in a horizontal position, along the axial direction of the outer cylinder wall of the offshore wind turbine cylindrical foundation, the end of the side baffle away from the axis of the annular fixed plate is the first end, and the end of the side baffle close to the axis of the annular fixed plate is the second end. The distance between the first end and the lower end face of the protective plate is greater than the distance between the second end and the lower end face of the protective plate.

10. The scour protection and automatic repair device for offshore wind turbine cylindrical foundations according to claim 2, characterized in that: At least one through-hole for overflow is provided on one end of the side baffle near the protective plate, and the overflow hole is connected to the space between the two side baffles on the protective plate.

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