Dredging device of mud floating type offshore wind turbine

Abstract

The invention relates to the technical field of offshore wind turbines, in particular to a desilting device of a mud floating type offshore wind turbine. The mud floating type offshore wind turbine comprises a wind turbine body, a tower drum, a foundation and a base which are sequentially connected from top to bottom, the foundation is sequentially connected with a lateral anchor chain and an anchor ingot, a vertical anchor chain is connected between the foundation and the base, and the dredging device comprises a mechanical arm grab bucket arranged on the outer side wall of the base, the clearing device is used for clearing stones and upper-layer sludge in the base; the vibration rod is arranged in the base and is used for loosening lower-layer sludge in the base; and the dredge pump is arranged on the base and is used for sucking the loosened lower-layer sludge out of the base. According to the technical scheme, the foundation can be completely embedded into the base.

Description

Technical Field

[0001] This invention relates to the field of offshore wind turbine technology, and in particular to a dredging device for a mud-floating offshore wind turbine. Background Technology

[0002] In related technologies, during the installation and conversion from a suspended state to a mud-floating state of offshore wind turbines, a large amount of silt and rocks will appear at the bottom of the base, which is not conducive to the embedding of the foundation into the base.

[0003] Therefore, there is an urgent need to provide a dredging device for floating offshore wind turbines to solve the above-mentioned technical problems. Summary of the Invention

[0004] This invention provides a dredging device for a floating offshore wind turbine, which enables the foundation to be fully embedded in the base.

[0005] This invention provides a dredging device for a floating offshore wind turbine. The floating offshore wind turbine includes a wind turbine, a tower, a foundation, and a base connected sequentially from top to bottom. Lateral anchor chains and anchors are sequentially connected to the foundation, and a vertical anchor chain connects the foundation and the base. The dredging device includes:

[0006] The robotic arm grab bucket installed on the outer wall of the base is used to remove stones and upper silt from inside the base;

[0007] The vibrating rod installed inside the base is used to loosen the lower layer of silt inside the base;

[0008] The sludge pump installed on the base is used to suck the loosened lower layer of sludge out of the base.

[0009] Beneficial effects:

[0010] The dredging device for a floating offshore wind turbine provided in this embodiment of the invention first dredges the seabed during installation, facilitating the smooth installation of the floating foundation and base. When encountering extreme marine environments requiring a transition from a suspended to a floating state, the device first dredges the base, ensuring the foundation is fully embedded into it. This technology features thorough dredging, wide applicability, and high operational efficiency, providing strong support for the stable operation and smooth transition of offshore wind turbine foundations. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the structure of a mud-floating offshore wind turbine according to an embodiment of the present invention;

[0013] Figure 2 for Figure 1 The diagram shows the structural schematic of the foundation in a mud-floating offshore wind turbine.

[0014] Figure 3 for Figure 1 The diagram shows the structural design of the base in a mud-floating offshore wind turbine.

[0015] Figure 4 for Figure 3 An enlarged schematic diagram of the base shown;

[0016] Figure 5 for Figure 1 The diagram shows the structure of the anchor in a mud-floating offshore wind turbine.

[0017] Figure label:

[0018] 1-Wind turbine; 2-Tower; 3-Foundation; 4-Base; 41-Groove; 42-Compartment plate; 5-Lateral anchor chain; 6-Anchor bar; 7-Vertical anchor chain;

[0019] 1a-Mechanical arm grab; 2a-Vibrating rod; 3a-Sludge pump; 4a-Camera; 5a-Spiral blade; 6a-Air outlet; 7a-Ring belt; 8a-First water outlet; 9a-Water inlet; 10a-Booster; 11a-Second water outlet; 12a-Flushing pipe. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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 some embodiments of the present invention, but 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.

[0021] Mud-floating offshore wind turbines refer to wind turbine foundations that can switch between a suspended state and a mud-floating state. In the suspended state, the wind turbine foundation is suspended on the sea surface or in seawater. In this state, the upper wind turbine operates at a higher height, which is beneficial to improving power generation efficiency and is suitable for marine environments with good conditions. In the mud-floating state, the wind turbine foundation is fixed in the mud layer on the seabed. In this state, the upper wind turbine operates at a lower height, which is beneficial to improving safety and is suitable for marine environments with harsher conditions.

[0022] like Figure 1 , Figure 3 and Figure 4 As shown, this embodiment of the invention provides a dredging device for a floating offshore wind turbine 1. The floating offshore wind turbine includes a wind turbine 1, a tower 2, a foundation 3, and a base 4 connected sequentially from top to bottom. The foundation 3 is sequentially connected to a lateral anchor chain 5 and an anchor 6. A vertical anchor chain 7 connects the foundation 3 and the base 4. The dredging device includes:

[0023] The robotic arm grab bucket 1a, installed on the outer wall of the base 4, is used to remove stones and upper silt from inside the base 4.

[0024] The vibrating rod 2a installed inside the base 4 is used to loosen the lower layer of silt inside the base 4.

[0025] The sludge pump 3a, installed on the base 4, is used to suck the loosened lower layer of sludge out of the base 4.

[0026] In this embodiment, during the installation process, the device is first used to dredge the seabed, facilitating the smooth installation of the mud-floating foundation 3 and the base 4. When encountering extreme marine environments requiring a transition from a suspended to a mud-floating state, the device first dredges the base 4, ensuring that the foundation 3 can be fully embedded into the base 4. This technology features thorough dredging, wide applicability, and high operational efficiency, providing strong support for the stable operation and smooth state transition of the offshore wind power foundation 3.

[0027] Specifically, during the transition of foundation 3 from a suspended state to a mud-floating state, a large amount of silt at the bottom of base 4 needs to be cleared before foundation 3 can be fully integrated with base 4. At this time, a remotely controlled robotic arm grab bucket 1a is used to roughly remove large clumps of silt and rocks accumulated on the upper part. Then, a vibrator 2a is activated to loosen the silt accumulated inside base 4. Finally, a mud pump 3a is used to suck out the loosened silt, completing the silt removal work on base 4 and allowing the structure to better complete the state transition. When the structure is in a mud-floating state, the robotic arm grab bucket 1a is located on the side wall of base 4, leaving space for foundation 3 to sink.

[0028] In one embodiment of the present invention, the bottom of the vibrating rod 2a has a conical structure (not shown in the figure) to facilitate better insertion into the mud.

[0029] like Figure 2 As shown, in one embodiment of the present invention, a camera 4a is provided at the bottom center of the base 3. The camera 4a is used to perform visual operation of the robotic arm grab bucket 1a in conjunction with a remote control system (not shown in the figure) at the back end.

[0030] In this embodiment, an underwater visualization camera 4a is installed at the lower spherical part of the foundation 3. When the foundation 3 transitions from a suspended state to a mud-floating state, it descends. When the underwater camera 4a on the base 4 achieves a certain range and clarity, the operator remotely controls the robotic arm grab bucket 1a via a computer. Combined with the underwater visualization camera 4a, dredging and silt removal can be carried out intuitively and conveniently. When the silt removal work is completed, the robotic arm grab bucket 1a returns to the outside of the foundation 3, leaving space for the foundation 3 to sink. The underwater visualization camera 4a can monitor and observe the silt accumulation at the bottom of the mud-floating structure in real time. With the help of computer-aided equipment, the robotic arm grab bucket 1a can be controlled to perform targeted silt removal work on the base 4. This technology makes the silt removal work intuitive and convenient, reducing the difficulty of silt removal.

[0031] In some implementations, the robotic arm grab 1a can be remotely controlled by a computer using digital twin technology, which will not be elaborated here.

[0032] In one embodiment of the present invention, a spiral blade 5a is provided on the bottom outer periphery of the base 3, which can rotate as the base 3 rises and sinks.

[0033] In this embodiment, a spiral blade 5a is installed at the bottom of the foundation 3. A vertical anchor chain is connected to the central axis of the spiral blade 5a. The spiral blade 5a can rotate as the foundation 3 rises and falls, and can also be controlled by a motor. The spiral blade 5a can remove marine organisms attached to the lower part of the foundation 3, as well as remove and cut flexible plants such as aquatic plants that may entangle or adhere to the anchor chain, preventing the influence of impurities when the anchor chain is raised or lowered, and ensuring that the structure can smoothly complete the state transition.

[0034] In one embodiment of the present invention, the base 4 is provided with a plurality of grooves 41, each groove 41 corresponding to a spiral blade 5a. The inner wall surface of each groove 41 is provided with a plurality of air outlets 6a to centrally exhaust air outward to remove the silt deposited in that part, prevent excessive silt accumulation, and prevent the anchor chain from operating normally. This plays a crucial role in maintaining the stable state transition of the mud-floating structure.

[0035] In one embodiment of the present invention, the base 4 is provided with a plurality of compartment plates 42. The compartment plates 42 are used to divide the cavity inside the base 4 into a plurality of compartments. Each compartment is provided with a vibrating rod 2a and each compartment corresponds to a robotic arm grab bucket 1a and a mud suction pump 3a.

[0036] In this embodiment, the base 4 adopts a compartmentalized approach, dividing the hexagonal structure of the foundation 3 into six equal compartments via compartmentalized plates 42. Each compartment independently undertakes dredging work, reducing the difficulty of dredging the entire structure. Each compartment is equipped with a sludge suction pump 3a, one end of which is connected to the interior of the compartment of the base 4, and the other end is connected to the external marine environment. The sludge suction pump 3a, in conjunction with the vibrating rod 2a, can completely suck out the sludge that is difficult to remove by the robotic arm grab bucket 1a, ensuring the cleanliness of the base 4 and providing bottom space for the structure to transition from a suspended state to a mud-floating state, allowing the foundation 3 to be completely fitted into the base 4.

[0037] In one embodiment of the present invention, the dredging device further includes an annular belt 7a surrounding the inner ring of the base 4, the annular belt 7a being connected to the compartment plate 42, and the sludge pump 3a being disposed on the annular belt 7a.

[0038] In one embodiment of the present invention, a micro pump (not shown in the figure) is provided inside the ring 7a, and a plurality of first water outlet holes 8a connected to the micro pump are provided on the outside of the ring 7a, so as to flush the silt deposited on the upper part of the base 4 by spraying high-pressure water flow, so as to prevent the silt from accumulating and hindering the sinking of the foundation 3.

[0039] like Figure 5 As shown, in one embodiment of the present invention, the side wall of the anchor 6 is provided with a water inlet hole 9a, the inside is provided with a booster 10a, and the bottom wall is provided with a second water outlet hole 11a. The water inlet hole 9a, the booster 10a and the second water outlet hole 11a are connected in sequence.

[0040] In this embodiment, during the sinking of the anchor 6, the water inlet 9a draws in water. When the anchor 6 is about to reach the mud surface, the second water outlet 11a opens and uses the booster 10a to spray high-pressure water outward to flush the silt on the seabed, loosening and suspending the seabed mud and sand layer. This has a good effect on softer mud and sediment, thereby making the seabed surface where the anchor 6 is located smoother.

[0041] In one embodiment of the present invention, a flushing pipe 12a is provided on the top of the anchor 6, and the water inlet 9a, the booster 10a and the flushing pipe 12a are connected in sequence, with the outlet of the flushing pipe 12a facing the lateral anchor chain 5.

[0042] In this embodiment, the lateral anchor chain 5 contacts the transmission gear set in the anchor 6. Two flushing pipes 12a are installed on the upper part of the anchor 6. The flushing pipes 12a can use the booster 10a to spray high-pressure water to flush away marine organisms attached to the lateral anchor chain 5. At the same time, it cleans the lateral anchor chain 5 and prevents the lateral anchor chain 5 from rusting and the large amount of marine organisms attached, which would make it difficult for the lateral anchor chain 5 to retract normally.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0044] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is only used to illustrate the technical solution of the present invention, and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of protection of the present invention.

Claims

1. A dredging device for a floating offshore wind turbine, characterized in that, The floating offshore wind turbine includes, from top to bottom, a wind turbine, a tower, a foundation, and a base. The foundation is sequentially connected to lateral anchor chains and anchor bolts. A vertical anchor chain connects the foundation and the base. The dredging device includes: The robotic arm grab bucket installed on the outer wall of the base is used to remove stones and upper silt from inside the base; The vibrating rod installed inside the base is used to loosen the lower layer of silt inside the base; The sludge pump installed on the base is used to suck the loosened lower layer of sludge out of the base.

2. The apparatus according to claim 1, characterized in that, The bottom of the vibrator has a conical structure.

3. The apparatus according to claim 1, characterized in that, A camera is installed at the bottom center of the base, and the camera is used to visualize the operation of the robotic arm grab in conjunction with the remote control system at the back end.

4. The apparatus according to claim 1, characterized in that, The base is provided with a spiral blade that can rotate as the base rises and sinks.

5. The apparatus according to claim 4, characterized in that, The base is provided with multiple grooves, each groove corresponding to one of the spiral blades, and the inner wall surface of each groove is provided with multiple air outlets.

6. The apparatus according to claim 1, characterized in that, The base has multiple compartment plates inside, which are used to divide the cavity inside the base into multiple compartments. Each compartment is equipped with a vibrating rod, and each compartment corresponds to a robotic arm grab and a mud suction pump.

7. The apparatus according to claim 6, characterized in that, The dredging device also includes an annular belt surrounding the inner ring of the base, the annular belt being connected to the compartment plate, and the sludge suction pump being mounted on the annular belt.

8. The apparatus according to claim 7, characterized in that, A micro pump is installed inside the ring belt, and multiple first water outlet holes connected to the micro pump are provided on the outer side of the ring belt.

9. The apparatus according to claim 1, characterized in that, The anchor has a water inlet hole on its side wall, a booster inside, and a second water outlet hole on its bottom wall. The water inlet hole, the booster, and the second water outlet hole are connected in sequence.

10. The apparatus according to claim 9, characterized in that, A flushing pipe is provided on the top of the anchor bar, and the water inlet, the booster and the flushing pipe are connected in sequence, with the outlet of the flushing pipe facing the lateral anchor chain.

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