Dredging device for a mud floating offshore wind turbine

Abstract

The present application relates to offshore wind turbine technical field, especially to a kind of mud floating offshore wind turbine's dredging device.The mud floating offshore wind turbine includes wind turbine, tower, foundation and base connected in turn from top to bottom, the foundation is sequentially connected with lateral anchor chain and anchor spindle, vertical anchor chain is connected between the foundation and the base, the dredging device includes: setting on the outer lateral wall of the base mechanical arm grab, for removing the stone and upper silt in the base interior;Setting in the base interior vibration rod, for loosening the lower silt in the base interior;Setting on the base suction dredge pump, for loosening after the lower silt suction to the base exterior.The above technical scheme can make foundation completely embedded on 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 transition 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 mud-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 can be 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 Structure diagram of a mud floating offshore wind turbine according to an embodiment of the present application;

[0013] Figure 2 Structure diagram of a foundation of a mud floating offshore wind turbine according to an embodiment of the present application; Figure 1

[0014] Structure diagram of a base of a mud floating offshore wind turbine according to an embodiment of the present application; Figure 3 Figure 1 Enlarged diagram of the base according to an embodiment of the present application;

[0015] Figure 4 Figure 3 Structure diagram of an anchor stock of a mud floating offshore wind turbine according to an embodiment of the present application.

[0016] Figure 5 Structure diagram of an anchor stock of a mud floating offshore wind turbine according to an embodiment of the present application. Figure 1 Reference signs:

[0017] 1 - wind turbine; 2 - tower; 3 - foundation; 4 - base; 41 - groove; 42 - bulkhead; 5 - lateral anchor chain; 6 - anchor stock; 7 - vertical anchor chain;

[0018] 1a - mechanical arm grab; 2a - vibrating rod; 3a - suction dredge 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.

[0019] DETAILED DESCRIPTION

[0020] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0021] The mud floating offshore wind turbine refers to a wind turbine foundation that can be converted between a suspended state and a mud floating state. The suspended state refers to that the wind turbine foundation is suspended in the sea surface or seawater. In this state, the working height of the upper wind turbine is high, which is conducive to improving the power generation efficiency and is suitable for the case that the marine environment is good. The mud floating state refers to that the wind turbine foundation is fixed in the mud layer of the seabed. In this state, the working height of the upper wind turbine is low, which is conducive to improving the safety and is suitable for the case that the marine environment is poor.

[0022] As shown in 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 visual camera 4a is installed at the lower spherical ball of the foundation 3. When the foundation 3 is in the suspended state and is about to be converted to the mud floating state, the foundation 3 is lowered. When the underwater camera 4a of the base 4 can visualize a certain range and clarity, the staff remotely controls the mechanical arm grab bucket 1a through the computer terminal, and combines the underwater visual camera 4a to intuitively and conveniently carry out the dredging and desilting work. When the desilting work is completed, the mechanical arm grab bucket 1a is rotated to the outside of the foundation 3 again to leave space for the sinking of the foundation 3. The underwater visual camera 4a can detect and observe the silt accumulation state at the bottom of the mud floating structure in real time, and cooperates with the computer-aided equipment to control the mechanical arm grab bucket 1a to desilt the base 4 in a targeted manner. This technology can make the desilting work intuitive and convenient, and reduce the difficulty of desilting.

[0031] In some embodiments, the mechanical arm grab bucket 1a can be remotely controlled by the computer terminal through the digital twin technology, which will not be described here.

[0032] In an embodiment of the present application, a spiral blade 5a is arranged at the outer periphery of the bottom of the foundation 3, which can rotate with the rising and sinking of the foundation 3.

[0033] In this embodiment, a spiral blade 5a is installed at the bottom of the foundation 3, and a vertical anchor chain is connected to the central axis of the spiral blade 5a. The spiral blade 5a can rotate with the rising and sinking of the foundation 3, or be controlled by starting the motor. The spiral blade 5a can remove marine organisms attached to the lower part of the foundation 3, and remove the entanglement and attachment of cut water grass and other flexible plants to the anchor chain, prevent the influence of impurities when the anchor chain rises and sinks, and ensure that the structure can smoothly complete the state conversion.

[0034] In an embodiment of the present application, the base 4 is provided with a plurality of grooves 41, each groove 41 corresponding to a spiral blade 5a, and the inner wall surface of each groove 41 is provided with a plurality of air outlets 6a to concentrate the air exhaust and remove the silt deposited in this part, prevent the silt from depositing too much and hindering the normal operation of the anchor chain, and play a crucial role in maintaining the stable state conversion of the mud floating structure.

[0035] In an embodiment of the present application, a plurality of partition plates 42 are arranged inside the base 4, which are used to divide the cavity inside the base 4 into a plurality of cabins. Each cabin is provided with a vibration rod 2a, and each cabin corresponds to a mechanical arm grab bucket 1a and a silt 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 is to be understood that the phraseology or terminology such as "including" or "comprising" or the like used herein in relation to an element encompass the presence of that element, but do not preclude the presence or addition of one or more other elements. In other words, it is to be understood that the term "including" or "comprising" or the like used herein in relation to an element encompasses the presence of that element, but do not preclude the presence or addition of one or more other elements. In other words, it is to be understood that the term "including" or "comprising" or the like used herein in relation to an element encompasses the presence of that element, but do not preclude the presence or addition of one or more other elements.

[0044] Finally, it should be noted that the above-mentioned only the preferred embodiments of the present application, only for the description of the technical solutions of the present application, and not for limiting the scope of protection of the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application are included in the scope of protection of the present application.

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 suction pump installed on the base is used to suck the loosened lower layer of sludge out of the base. 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.

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 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.

7. The apparatus according to claim 6, 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.

8. 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.

9. The apparatus according to claim 8, 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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