Offshore wind power composite cylinder type foundation uniform sand cleaning device

Abstract

This invention discloses a uniform sand removal device for a composite cylindrical foundation of offshore wind power, belonging to the technical field of uniform sand removal devices for cylindrical foundations. It includes a foundation cylinder, an enlarged extraction mechanism, and a monitoring mechanism. The foundation cylinder includes several extraction pipes, and the monitoring mechanism includes a transparent shell and a monitoring head. By installing multiple extraction pipes on the foundation cylinder and cooperating with the monitoring mechanism, this invention enables the accurate determination and removal of the location of seabed deposits during the sinking and subsequent tilting of the foundation cylinder, facilitating the sinking of the foundation cylinder and the overall repositioning of the offshore wind power system. Through various methods of enlarged extraction mechanism, the extraction pipes can uniformly extract seabed deposits, avoiding the unevenness that can occur with straight pipe extraction. The combination of a colored observation plate and an inclined extraction port allows the extraction pipes to work with the monitoring mechanism to precisely locate and extract seabed deposits.

Description

Technical Field

[0001] This invention relates to the technical field of uniform sand removal devices for cylindrical foundations, and in particular to a uniform sand removal device for offshore wind power composite cylindrical foundations. Background Technology

[0002] For example, CN120042231A describes a composite cylindrical foundation for offshore wind power with overturning and resetting function. It uses a hammer-hammering component to hammer the tilted end of the composite cylindrical foundation and a branch pipe to extract seawater, silt, or sediment from inside the cylindrical foundation to achieve self-rescue after the offshore wind power tilts.

[0003] However, the branch pipe is only located at one corner of the outer side of the composite cylindrical foundation. As a result, during the process of the composite cylindrical foundation sinking into the seabed, it is difficult to clean up the silt and sand that accumulate on the seabed surface, which can easily cause the composite cylindrical foundation to sink and tilt. Similarly, when the composite cylindrical foundation tilts again after installation, in addition to the internal silt and sand surging and accumulating, the offshore wind power itself is also tilted by the external wind and water flow. At this time, the silt inside the composite cylindrical foundation will accumulate in the opposite direction of the tilt due to the pressure of the inner wall of the composite cylindrical foundation. At this time, it is also difficult for the branch pipe to discharge the silt and sand, and it can only be slowly hammered by the hammering component. Summary of the Invention

[0004] Therefore, it is necessary to provide a uniform sand removal device for offshore wind power composite cylindrical foundations to address the technical problem of the single extraction location of the aforementioned outlet pipe.

[0005] To achieve the above objectives, the present invention provides a uniform sand removal device for offshore wind power composite cylindrical foundations, comprising:

[0006] The foundation cylinder includes several extraction pipes, which are evenly installed on the top of the foundation cylinder. A branch extraction pipe is installed on the foundation cylinder. All of the extraction pipes are connected to the branch extraction pipes through annular pipes. A valve is installed on the extraction pipe. The bottom of the extraction pipe is connected to the inner wall of the foundation cylinder through an enlarged extraction mechanism. The extraction pipe is sealed to the foundation cylinder.

[0007] The monitoring device includes a transparent shell, which is sealed and fixedly installed on the base cylinder, and a monitoring head is installed inside the transparent shell.

[0008] By adopting the above technical solution, the monitoring mechanism descends along with the foundation cylinder during its descent. The monitoring head inside the transparent shell can be activated to observe whether there is sediment accumulation on the seabed below the foundation cylinder when it is still at a higher position. When sediment is found in a certain area of ​​the seabed, the valve on the extraction pipe near the sediment on the foundation cylinder can be opened, allowing the sediment to be extracted and discharged, enabling the foundation cylinder to sink smoothly into the seabed. Since the number of extraction pipes cannot be excessive and the spacing between them is limited, if sediment is between two extraction pipes, both pipes can be opened, resulting in the sediment being extracted and cleaned twice while other areas are cleaned only once, thus achieving uniform cleaning. If the foundation cylinder tilts after installation, observation can still be made through the monitoring head in the monitoring mechanism. At this time, due to the distance between the top wall of the foundation cylinder and the seabed... Because the spacing between the monitoring heads is relatively small, they can only observe a portion of the seabed for sediment or silt accumulation. If no accumulation is observed at the monitoring point, the extraction pipe on the opposite side of the monitoring mechanism can be opened for extraction, and the extracted material can be observed. If no silt or sediment is found, the opened extraction pipe is closed, and the extraction pipe at the higher position after the foundation cylinder is tilted is opened to pump water outwards. The self-rescue device on the foundation cylinder can be activated simultaneously for self-rescue. Expanding the extraction mechanism can increase the extraction range when the extraction pipe extracts sediment outwards, avoiding the situation where a single pipe is used to extract sediment only at the bottom of the extraction pipe, which would worsen the flatness of the seabed. The sealed and fixed installation of the transparent shell and the foundation cylinder ensures that a negative pressure can still be formed inside the foundation cylinder when the extraction pipe extracts sediment outwards, thus facilitating the repositioning and sinking of the foundation cylinder. The sediment extracted by the extraction pipe is transported to the branch extraction pipe through the annular pipe, which serves to connect with the outside world.

[0009] Optionally, it also includes a frame, with several base cylinders evenly installed on the frame. A main extraction pipe is installed on the frame, and the output ends of several branch extraction pipes are all located inside the main extraction pipe. A valve structure is installed at the output end of the branch extraction pipes. A water inlet pipe for water to enter the branch extraction pipes is installed on the main extraction pipe. The expanded extraction mechanism includes a rotating head, which is rotatably installed at the bottom of the extraction pipe. Several mounting grooves are provided inside the rotating head, and several adjusting plates are hinged in the mounting grooves. Several inclined through holes are provided on the adjusting plates, and an inclined extraction port is installed at the bottom of the rotating head.

[0010] By adopting the above technical solution, when a foundation cylinder needs to discharge seawater, silt, or other materials, the corresponding valve structure can be opened, and the materials can be drawn out through the discharge port on the main extraction pipe by a suction pump. At the same time, the water inlet pipe connected to the water inlet pump can be used to dilute the materials, allowing them to be discharged smoothly. When the materials are being extracted, the adjusting plate will be pushed and rotated into the installation groove by the materials, without affecting the material discharge. When the extraction pipe is not extracting, the adjusting plate can deflect downwards due to its own weight. At this time, water can be injected into the branch extraction pipe through the water inlet pipe. When the valves in the extraction pipe are opened, the adjusting plates are impacted by the water pressure on their inclined through holes, causing the adjusting plates to drive the rotating head and the inclined extraction port to rotate. This allows for repeated extraction of materials and injection of water into the foundation cylinder, thus achieving continuous rotation of the inclined extraction port and making the seabed after extraction more level. A pad can be fixedly installed in the installation groove to prevent the adjusting plate from deflecting and falling when it is in a vertical position due to being driven by materials and no longer extracting.

[0011] Optionally, the enlarged extraction mechanism further includes a second rotating head, which is rotatably mounted at the bottom of the extraction tube. Several inclined short plates are installed inside the second rotating head, and an inclined extraction port is installed at the bottom of the second rotating head.

[0012] By adopting the above technical solution, when the extraction tube is extracting, the material can be pushed by the inclined surface of the inclined short plate when it passes through the inclined short plate. Thus, the inclined short plate can drive the rotating head two and the inclined extraction port two to rotate continuously during the extraction process.

[0013] Optionally, the enlarged extraction mechanism further includes several inclined inlets, which are located on the base cylinder, with one end of each of the inclined inlets close to the other at the bottom of the extraction tube.

[0014] By adopting the above technical solution, the material can enter through several inclined inlets during extraction, and the purpose of uniformly extracting the material on the seabed is achieved by setting the inclined inlets, under the action of the expanded extraction mechanism.

[0015] Optionally, the branch pipe is made of transparent material, and a colored observation plate is installed on the rotating head.

[0016] By adopting the above technical solution, when water is injected into the extraction pipe from the inlet pipe, the position of the colored observation plate can be observed, and the water injection can be stopped in advance according to the inertial force. Thus, the input end of the tilted extraction port can be stopped at the required position, that is, facing the direction of the accumulated material, so as to achieve the purpose of accurately extracting the accumulated material.

[0017] Optionally, either the inclined extraction port or the second inclined extraction port is located inside the top wall of the foundation cylinder.

[0018] By adopting the above technical solution, the inclined extraction port or the second inclined extraction port will not collide with the seabed during the process of turning and sinking with the foundation cylinder.

[0019] Optionally, a lighting device is installed inside the transparent shell.

[0020] By adopting the above technical solution, the lighting device can be turned on to provide illumination when the monitoring head is working, which makes it easier for staff to observe the accumulation situation. Both the monitoring head and the lighting device can be equipped with their own power supply and can be connected to an external signal processor.

[0021] Optionally, the adjustment plate is provided with a chamfer to facilitate the contact between adjacent adjustment plates.

[0022] By adopting the above technical solution, when the regulating plate deflects and descends due to its own gravity, the adjacent regulating plates can maintain a gap fit or abutment state, so that most of the water flow can pass through the tilt of the regulating plate, thereby improving the regulation efficiency of the rotation.

[0023] Optionally, a wear-resistant layer is installed on the side of the inclined short plate facing the inside of the base cylinder.

[0024] By adopting the above technical solution, the wear of the inclined short plate on the mud and sand is reduced when the extraction pipe is continuously extracting, thus improving its service life.

[0025] Optionally, a tilt sensor is mounted on the frame.

[0026] By adopting the above technical solution, when the frame and foundation cylinder sink or are tilted after installation, the tilt sensor, together with the monitoring mechanism, transmits signals to accurately determine the tilt angle and direction.

[0027] This technical solution has at least the following beneficial effects:

[0028] 1. By installing multiple extraction pipes on the foundation cylinder and cooperating with the monitoring agency, the location of the seabed deposits can be determined and cleaned more accurately during the sinking and installation and subsequent tilting of the foundation cylinder, thereby facilitating the sinking of the foundation cylinder and the overall repositioning of the offshore wind power plant.

[0029] 2. By expanding the extraction mechanism in multiple ways, the extraction pipe can extract the deposits on the seabed evenly, avoiding the unevenness of the seabed that is easily caused by straight pipe extraction.

[0030] 3. By combining the colored observation board with the inclined extraction port, the extraction pipe can work with the monitoring agency to accurately locate and extract the deposits on the seabed. Attached Figure Description

[0031] Figure 1This is a perspective view of an embodiment of the present invention;

[0032] Figure 2 This is a perspective view of the base cylinder according to an embodiment of the present invention;

[0033] Figure 3 This is a side sectional view of the base tube according to an embodiment of the present invention;

[0034] Figure 4 This is a side sectional view of the main extraction tube according to an embodiment of the present invention;

[0035] Figure 5 This is a side sectional view of another embodiment of the present invention;

[0036] Figure 6 This is a perspective view of an enlarged extraction mechanism according to another embodiment of the present invention;

[0037] Figure 7 This is a perspective view of the adjusting plate after it has deflected and sunk according to another embodiment of the present invention;

[0038] Figure 8 Two perspective views of an enlarged extraction mechanism according to another embodiment of the present invention;

[0039] In the diagram, 1. Base cylinder; 11. Extraction pipe; 12. Branch extraction pipe; 121. Valve structure; 122. Inlet pipe; 13. Ring pipe; 14. Valve; 15. Enlarged extraction mechanism; 151. Rotating head; 1511. Colored observation plate; 152. Mounting groove; 153. Adjusting plate; 154. Inclined through hole; 155. Inclined extraction port; 156. Rotating head two; 157. Inclined short plate; 1571. Wear-resistant layer; 158. Inclined extraction port two; 159. Inclined inlet; 16. Main extraction pipe; 2. Monitoring mechanism; 21. Transparent shell; 22. Monitoring head; 23. Lighting device; 3. Frame. Detailed Implementation

[0040] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0041] Please see Figures 1 to 8 This application provides a uniform sand removal device for offshore wind power composite cylindrical foundations, comprising:

[0042] The base cylinder 1 includes several extraction pipes 11, which are uniformly fixedly installed on the top of the base cylinder 1. A branch extraction pipe 12 is fixedly installed on the base cylinder 1. The extraction pipes 11 are all connected to the branch extraction pipes 12 through annular pipes 13. A valve 14 is fixedly installed on the extraction pipe 11. The bottom of the extraction pipe 11 is connected to the inner wall of the base cylinder 1 through an enlarged extraction mechanism 15. The extraction pipe 11 is sealed to the base cylinder 1.

[0043] The monitoring unit 2 includes a transparent shell 21, which can be made of high-pressure resistant seabed glass made of acrylic material, and its strength can be further increased by adding metal wires. The transparent shell 21 is sealed and fixedly installed on the base cylinder 1. A monitoring head 22 is fixedly installed inside the transparent shell 21. The monitoring head 22 can be a camera that transmits signals in real time.

[0044] As the foundation cylinder 1 descends, the monitoring mechanism 2 descends accordingly. The monitoring head 22 within the transparent shell 21 can be activated to observe whether there is sediment accumulation on the seabed below the foundation cylinder 1, even when the foundation cylinder 1 is still at a higher position. If sediment is found in a certain area of ​​the seabed, the valve 14 on the extraction pipe 11 near the sediment can be opened, allowing the sediment to be extracted and discharged through the extraction pipe 11, enabling the foundation cylinder 1 to sink smoothly into the seabed. Since the number of extraction pipes 11 cannot be excessive and the spacing between them is important, if sediment is between two extraction pipes 11, both pipes 11 can be opened, resulting in the sediment being extracted and cleaned twice while other areas are cleaned only once, thus achieving uniform cleaning. If the foundation cylinder 1 tilts after installation, observation can still be conducted through the monitoring head 22 in the monitoring mechanism 2. However, at this time, due to the small distance between the inner top wall of the foundation cylinder 1 and the seabed... Therefore, monitoring head 22 can only observe whether there is sediment or silt accumulation on a portion of the seabed. If no accumulation is observed at the detection point, the extraction pipe 11 on the opposite side of monitoring mechanism 2 can be opened for extraction, while the extracted material is observed. If no silt or sediment is found, the opened extraction pipe 11 is closed, and the extraction pipe 11 at the higher position after the foundation cylinder 1 is tilted is opened to pump water outwards. Simultaneously, the self-rescue device on the foundation cylinder 1 can be activated to assist in self-rescue. The expanded extraction mechanism 15 is used to pump water outwards from the extraction pipe 11. When extracting sediment, the extraction range can be expanded to avoid the situation where only the sediment at the bottom of the extraction pipe 11 is extracted, which would cause the seabed flatness to deteriorate. The sealed and fixed installation of the transparent shell 21 and the foundation cylinder 1 ensures that a negative pressure can still be formed inside the foundation cylinder 1 when the extraction pipe 11 is extracting outwards, which facilitates the repositioning and sinking of the foundation cylinder 1. The sediment extracted by the extraction pipe 11 is transported to the branch extraction pipe 12 through the annular pipe 13, and the branch extraction pipe 12 serves to connect with the outside world. Example 1

[0045] Based on the foregoing embodiments, please refer to Figures 4 to 7It also includes a frame 3, several base cylinders 1 are evenly fixedly installed on the frame 3, a main extraction pipe 16 is fixedly installed on the frame 3, several branch extraction pipes 12 have their output ends located inside the main extraction pipe 16, the main extraction pipe 16 has an outlet connected to an external suction pump, a valve is installed on the outlet, a valve structure 121 is fixedly installed on the output end of the branch extraction pipes 12, a water inlet pipe 122 for water to enter the branch extraction pipes 12 is fixedly installed on the main extraction pipe 16, the water inlet pipe 122 is connected to the water inlet pump, the expanded extraction mechanism 15 includes a rotating head 151, the rotating head 151 is rotatably installed at the bottom of the extraction pipe 11, several mounting grooves 152 are opened in the rotating head 151, several adjusting plates 153 are hinged in the mounting grooves 152, several inclined through holes 154 are opened on the adjusting plates 153, and an inclined extraction port 155 is installed at the bottom of the rotating head 151.

[0046] By adopting the above technical solution, when a foundation cylinder 1 needs to discharge seawater, silt, or other materials, the corresponding valve structure 121 can be opened, while the remaining branch extraction pipes 12 remain closed by the valve structure 121. The materials are then drawn out and discharged through the discharge port on the main extraction pipe 16 by the suction pump. Simultaneously, the water inlet pipe 122, connected to the water inlet pump, can be used to dilute the materials, allowing them to be discharged smoothly. When the materials are being extracted, the adjusting plate 153 will be pushed and rotated into the mounting groove 152 by the materials, without affecting the material discharge. When the extraction pipe 11 is not being extracted, the adjusting plate 153 can deflect downwards due to its own weight. At this time, water can be injected into the branch pipe 12 through the water inlet pipe 122. After the adjustment plates 153 in the extraction pipe 11 with the valve 14 opened are impacted by the water pressure on the inclined through holes 154, the adjustment plates 153 can drive the rotating head 151 and the inclined extraction port 155 to rotate. This allows for repeated extraction of materials and injection of water into the foundation cylinder 1, thereby achieving continuous rotation of the inclined extraction port 155 and making the seabed after extraction by the extraction pipe 11 more flat. A pad can be fixedly installed in the installation groove 152 to prevent the adjustment plates 153 from deflecting and falling when they are in a vertical state due to being driven by materials and no longer stop extraction. Example 2

[0047] Based on the foregoing embodiments, please refer to Figure 8 The enlarged extraction mechanism 15 also includes a rotating head 156, which is rotatably installed at the bottom of the extraction tube 11. Several inclined short plates 157 are fixedly installed inside the rotating head 156, and an inclined extraction port 158 ​​is installed at the bottom of the rotating head 156.

[0048] By adopting the above technical solution, when the extraction tube 11 is extracting, the material can be given a certain thrust by the inclined surface of the inclined short plate 157 when it passes through the inclined short plate 157. Thus, the inclined short plate 157 can drive the rotating head 156 and the inclined extraction port 158 ​​to rotate continuously during the extraction process. Example 3

[0049] Based on the foregoing embodiments, please refer to Figure 3 The enlarged extraction mechanism 15 also includes several inclined inlets 159, which are opened on the base cylinder 1, and the ends of the several inclined inlets 159 that are close to each other are all located at the bottom of the extraction tube 11.

[0050] By adopting the above technical solution, when the extraction pipe 11 is extracting, the material can enter through several inclined inlets 159. By setting the inclined inlets 159, the extraction pipe 11 can uniformly extract the material on the seabed under the action of the enlarged extraction mechanism 15.

[0051] In the first embodiment, the branch pipe 12 is made of transparent material, namely high-pressure resistant seabed glass made of acrylic material, and a colored observation plate 1511 is fixedly installed on the rotating head 151.

[0052] By adopting the above technical solution, when water is injected into the extraction pipe 11 from the inlet pipe 122, the position of the colored observation plate 1511 can be observed, and the water injection can be stopped in advance according to the inertial force. Thus, the input end of the tilted extraction port 155 can be stopped at the required position, that is, facing the direction of the accumulated material, so as to achieve the purpose of accurately extracting the accumulated material.

[0053] In one embodiment, either the inclined pull-out 155 or the inclined pull-out 158 ​​is located inside the top wall of the base cylinder 1.

[0054] By adopting the above technical solution, the inclined extraction port 155 or the second inclined extraction port 158 ​​will not collide with the seabed during the process of turning and sinking with the foundation cylinder 1.

[0055] In one embodiment, a lighting device 23 is fixedly installed inside the transparent shell 21, and the lighting device 23 may be a lamp.

[0056] By adopting the above technical solution, the lighting device 23 can be turned on to provide illumination when the monitoring head 22 is working, which makes it easier for staff to observe the accumulation situation. Both the monitoring head 22 and the lighting device 23 can be equipped with their own power supply and connected to an external signal processor.

[0057] In one embodiment, the adjusting plate 153 has a chamfer to facilitate the contact between adjacent adjusting plates 153.

[0058] By adopting the above technical solution, when the regulating plate 153 deflects and descends due to its own gravity, the adjacent regulating plates 153 can maintain a gap fit or abutment state, so that most of the water flow can flow through the inclined through hole 154 on the regulating plate 153, thereby improving the regulation efficiency of the rotation.

[0059] In one embodiment, a wear-resistant layer 1571 is fixedly installed on the side of the inclined short plate 157 facing the inside of the base cylinder 1.

[0060] By adopting the above technical solution, the wear of mud and sand on the inclined short plate 157 is reduced when the extraction pipe 11 is continuously extracting, thereby improving its service life.

[0061] In one embodiment, a tilt sensor is fixedly mounted on the frame 3.

[0062] By adopting the above technical solution, when the frame 3 and the foundation cylinder 1 sink or are installed and then tilted, the tilt sensor, together with the monitoring mechanism 2, transmits signals to accurately determine the tilt angle and direction.

[0063] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

[0065] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0066] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0067] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

Claims

1. A uniform sand-removing device for offshore wind power composite cylindrical foundations, characterized in that, include: The base cylinder (1) includes several extraction pipes (11), which are evenly installed on the top of the base cylinder (1). A branch extraction pipe (12) is installed on the base cylinder (1). The extraction pipes (11) are all connected to the branch extraction pipes (12) through an annular pipe (13). A valve (14) is installed on the extraction pipe (11). The bottom of the extraction pipe (11) is connected to the inner wall of the base cylinder (1) through an enlarged extraction mechanism (15). The extraction pipe (11) is sealed to the base cylinder (1). The monitoring mechanism (2) includes a transparent shell (21), which is sealed and fixedly installed on the base cylinder (1), and a monitoring head (22) is installed inside the transparent shell (21). It also includes a frame (3), several base cylinders (1) are evenly installed on the frame (3), a main extraction pipe (16) is installed on the frame (3), the output ends of several branch extraction pipes (12) are all located inside the main extraction pipe (16), the output ends of the branch extraction pipes (12) are equipped with valve structures (121), the main extraction pipe (16) is equipped with water inlet pipes (122) for water to enter the branch extraction pipes (12), the expanded extraction mechanism (15) includes a rotating head (151), the rotating head (151) is rotatably installed at the bottom of the extraction pipe (11), the rotating head (151) is provided with several mounting grooves (152), several adjusting plates (153) are hinged in the mounting grooves (152), several inclined through holes (154) are provided on the adjusting plates (153), and an inclined extraction port (155) is installed at the bottom of the rotating head (151).

2. The uniform sand removal device for offshore wind power composite cylindrical foundations according to claim 1, characterized in that, The enlarged extraction mechanism (15) also includes a rotating head two (156), which is rotatably installed at the bottom of the extraction tube (11). Several inclined short plates (157) are installed inside the rotating head two (156), and an inclined extraction port two (158) is installed at the bottom of the rotating head two (156).

3. The uniform sand removal device for offshore wind power composite cylindrical foundations according to claim 1, characterized in that, The enlarged extraction mechanism (15) also includes several inclined inlets (159), which are located on the base cylinder (1). The ends of the several inclined inlets (159) that are close to each other are all located at the bottom of the extraction tube (11).

4. The uniform sand removal device for offshore wind power composite cylindrical foundations according to claim 1, characterized in that, The branch pipe (12) is made of transparent material, and a colored observation plate (1511) is installed on the rotating head (151).

5. The uniform sand removal device for offshore wind power composite cylindrical foundations according to claim 1 or 2, characterized in that, The inclined extraction port (155) or the second inclined extraction port (158) is located inside the top wall of the base cylinder (1).

6. The uniform sand removal device for offshore wind power composite cylindrical foundations according to claim 1, characterized in that, A lighting device (23) is installed inside the transparent shell (21).

7. The uniform sand removal device for offshore wind power composite cylindrical foundations according to claim 1, characterized in that, The adjustment plate (153) is provided with a chamfer to facilitate the mutual contact of adjacent adjustment plates (153).

8. The uniform sand removal device for offshore wind power composite cylindrical foundations according to claim 2, characterized in that, The inclined short plate (157) has a wear-resistant layer (1571) installed on the side facing the inside of the base cylinder (1).

9. The uniform sand removal device for offshore wind power composite cylindrical foundations according to claim 1, characterized in that, An angle sensor is installed on the frame (3).

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