Floating wind turbine anchoring foundation device and method for mooring wind turbine using same

Abstract

The present application relates to a kind of floating wind turbine anchoring foundation device and the method for realizing wind turbine mooring thereof, the device includes anchoring foundation body and hollow pontoon, the anchoring foundation body is equipped with water inlet hole for seawater inflow, the anchoring foundation body and pontoon are retractable connection between, the hook is equipped on the pontoon.Anchoring foundation body is sunk into seabed after flowing into seawater through water inlet hole and then is located on seabed, then the anchor chain of wind turbine is connected with pontoon through hook quickly, pontoon anchor chain is driven pontoon to sink with guide wheel as axis until close to anchoring foundation body located in seabed, to realize the fixation of floating wind turbine.The floating wind turbine anchoring foundation device of the present application is simple in structure, can be quickly arranged, and can moor multiple wind turbines, reduces offshore mooring installation cost and time.

Description

Technical Field

[0001] This invention relates to a floating wind turbine anchoring structure for offshore use, specifically a floating wind turbine anchoring foundation device and a method for mooring the wind turbine. Background Technology

[0002] Currently, floating wind turbines are increasingly becoming the mainstream in offshore wind power generation, and countries around the world are developing various types of floating offshore wind turbines. With the increasing number of floating offshore wind turbines, offshore construction requires securing them to the seabed using mooring chains or cables. This method necessitates driving piles into the seabed, which is costly and time-consuming. Therefore, there is an urgent need to research an economical and rapidly deployable anchoring foundation device for floating wind turbines. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a floating wind turbine anchoring foundation device and a method for mooring wind turbines. The floating wind turbine anchoring foundation device has a simple structure, can be quickly deployed, and can moor multiple wind turbines, reducing the cost and time of offshore mooring installation.

[0004] The technical solution adopted to achieve the purpose of this invention is a floating wind turbine anchoring foundation device, which includes an anchoring foundation body and a hollow pontoon. The anchoring foundation body is provided with a water inlet for seawater to flow in. The anchoring foundation body and the pontoon are retractable. The pontoon is provided with a hook.

[0005] In the above technical solution, the retractable connection structure is achieved by setting a guide wheel on the anchoring foundation body. A buoy anchor chain is wound around the guide wheel. One end of the buoy anchor chain is connected to the buoy, and the other end is used to connect to the engineering transport vessel. The engineering transport vessel pulls the buoy anchor chain to move, thereby driving the buoy to move downward and closer to the anchoring foundation body.

[0006] In the above technical solution, there are multiple hooks.

[0007] Furthermore, the present invention also provides a method for mooring a wind turbine using the above-mentioned floating wind turbine anchoring foundation device, the method comprising:

[0008] S1. Transport the floating wind turbine anchoring foundation device to the target sea area by engineering transport vessel, and wait for installation;

[0009] S2. The engineering transport vessel begins to inject ballast water at the stern and actively tilts its stern. The floating wind turbine anchoring foundation device gradually falls into the water through the slipper on the engineering transport vessel. Seawater gradually flows into the anchoring foundation body through the water inlet, and the anchoring foundation body begins to sink.

[0010] S3. The anchoring foundation is completely sunk to the seabed and sits on the seabed. The pontoon floats on the sea surface due to its own buoyancy. At this time, the wind turbine anchor chain that has been set up is hung on the hook of the pontoon.

[0011] S4. Connect one end of the pontoon anchor chain to the salvage chain on the engineering transport vessel. The engineering transport vessel pulls the pontoon anchor chain away from the anchoring foundation body. The pulling force is transmitted to the pontoon through the guide wheel. Under the action of the pulling force, the pontoon gradually begins to sink.

[0012] S5. Until the buoy is completely close to the anchor foundation body, the engineering transport vessel disconnects the buoy anchor chain and then fixes the buoy to the anchor foundation body on the seabed. At this time, the wind turbine is connected to the anchor foundation body through the wind turbine anchor chain to achieve the mooring of the wind turbine.

[0013] When mooring other wind turbines, including:

[0014] S6. Remove the pontoon from the anchor foundation and wait for it to rise to the surface;

[0015] S7. After the buoy rises to the surface, attach the anchor chains of the other wind turbines to the hooks on the buoy. Repeat S4-S5 to pull the buoy to the seabed and complete the mooring of the other wind turbines.

[0016] The present invention has the following advantages:

[0017] 1. Simple structure, economical cost, and easy to manufacture quickly.

[0018] 2. The operation is simple and can quickly deploy the floating wind turbine anchoring foundation device of this invention to the seawater area where the wind turbine needs to be moored. After the anchoring foundation body flows into the seawater through the water inlet, it sinks into the seabed and sits on the seabed. Then, the anchor chain of the wind turbine is quickly connected to the pontoon through the hook. The pontoon anchor chain is pulled by the engineering transport vessel. The pontoon anchor chain drives the pontoon to sink with the guide wheel as the axis until it is close to the anchoring foundation body located on the seabed, thereby realizing the fixation of the floating wind turbine.

[0019] 3. Multiple hooks can be installed on the pontoons as needed, so as to fix multiple floating fans at the same time. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the floating wind turbine anchoring foundation device of the present invention.

[0021] Figure 2 A schematic diagram showing the floating wind turbine anchoring foundation device of the present invention being loaded onto an engineering transport vessel.

[0022] Figure 3 This is a schematic diagram of the floating wind turbine anchoring foundation device of the present invention being lowered into the water from an engineering transport vessel.

[0023] Figure 4 This is a schematic diagram of the wind turbine anchor chain being attached to the hook of the pontoon.

[0024] Figure 5 A schematic diagram of pulling the buoy anchor chain for an engineering transport vessel.

[0025] Figure 6 This is a schematic diagram of the pontoon being fixed to the main body of the seabed anchoring foundation.

[0026] Figure 7 This is a schematic diagram for disengaging the pontoon.

[0027] Figure 8 This is a schematic diagram showing the wind turbine anchor chain of the second wind turbine attached to the hook of the pontoon.

[0028] Figure 9 This is a schematic diagram showing the mooring of the second wind turbine.

[0029] Figure 10 A top view schematic diagram of the floating wind turbine anchoring foundation device for mooring three wind turbines.

[0030] Numbering in the diagram: 1-Anchoring foundation body, 2-Float, 3-Hook, 4-Float anchor chain, 5-Guide wheel, 6-Sea surface, 7-Engineering transport vessel, 8-First wind turbine anchor chain, 9-Second wind turbine anchor chain, 10-Second wind turbine anchor chain, 11-First wind turbine, 12-Second wind turbine, 13-Third wind turbine. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0032] like Figure 1 As shown, the floating wind turbine anchoring foundation device of the present invention includes an anchoring foundation body 1 and a hollow pontoon 2. The anchoring foundation body 1 is provided with a water inlet for seawater to flow in. The anchoring foundation body 1 and the pontoon 2 are retractable. The pontoon 2 is provided with a hook 3, and multiple hooks 3 can be provided.

[0033] The retractable connection structure used in this embodiment is achieved by setting a guide wheel 5 on the anchoring foundation body 1. A buoy anchor chain 4 is wound on the guide wheel 5. One end of the buoy anchor chain 4 is connected to the buoy 2, and the other end is used to connect to the engineering transport vessel 7. The engineering transport vessel 7 pulls the buoy anchor chain 4 to move, thereby driving the buoy 2 to move downward and closer to the anchoring foundation body 1.

[0034] The method for mooring wind turbines using the floating wind turbine anchoring foundation device of the present invention includes the following steps:

[0035] S1. The floating wind turbine anchoring foundation device will be transported to the target sea area by the engineering transport vessel 7, awaiting installation. Figure 2 As shown.

[0036] S2. The engineering transport vessel begins injecting ballast water at its stern, actively tilting its stern. The floating wind turbine anchoring foundation device gradually lowers into the water via the slipper on the engineering transport vessel. Seawater gradually flows into the anchoring foundation body through the inlet, and the anchoring foundation body 1 begins to sink. Figure 3 As shown.

[0037] S3. The anchoring foundation 1 is completely submerged and rests on the seabed. The buoy 2 floats on the sea surface due to its own buoyancy. At this point, the first wind turbine anchor chain 8, which has already been installed, is attached to the hook 3 of the buoy 2. Figure 4 As shown.

[0038] S4. Using a frogman or ROV, connect one end of the pontoon anchor chain 4 to the salvage chain on the engineering transport vessel 7. The engineering transport vessel 7 pulls the pontoon anchor chain 4 away from the anchoring foundation body 1. The pulling force is transmitted to the pontoon 2 through the guide wheel 5. Under the action of the pulling force, the pontoon 2 gradually begins to sink. Figure 5 As shown.

[0039] S5. Until the buoy 2 is completely close to the anchoring foundation 1, the engineering transport vessel 7 disconnects the buoy anchor chain 4. Using a frogman or ROV, underwater operations are performed to fix the buoy 2 to the anchoring foundation 1 on the seabed using pins or guide wheel locking mechanisms. At this time, the first wind turbine 11 is connected to the anchoring foundation 1 through the first wind turbine anchor chain 8, thus achieving mooring of the first wind turbine 11. Figure 6 As shown. Since the anchoring foundation body 1 is completely submerged in water and has a large bottom suction force, the foundation is firmly fixed to the seabed and used to moor the floating wind turbine without the anchor dragging. Therefore, the anchoring foundation body 1 can be designed with a suction force, such as a suction cup.

[0040] When it is necessary to moor the second wind turbine, the following procedures shall be followed:

[0041] S6. Loosen the pin or guide wheel locking mechanism to release the buoy from the anchor foundation body, and wait for the buoy to rise. Figure 7 As shown.

[0042] S7. After the pontoon rises to the surface, attach the second fan anchor chain 9 of the second fan 12 to the hook 3 of the pontoon 2. Figure 8 As shown, repeat steps S4-S5 to pull buoy 2 to the seabed, completing the mooring of the second wind turbine 12. Figure 9 As shown.

[0043] When mooring other wind turbines, repeat steps S6-S7 above. For example, the top view diagram after mooring the third wind turbine 13 is shown below. Figure 10 As shown.

Claims

1. A method for mooring a floating wind turbine using a floating wind turbine anchoring foundation device, characterized in that: The floating wind turbine anchoring foundation device includes an anchoring foundation body and a hollow pontoon. The anchoring foundation body is provided with a water inlet for seawater to flow in. The anchoring foundation body and the pontoon are retractable. The pontoon is provided with a hook. The retractable connection structure is achieved by setting a guide wheel on the anchoring foundation body. A pontoon anchor chain is wound around the guide wheel. One end of the pontoon anchor chain is connected to the pontoon, and the other end is used to connect to the engineering transport vessel. The engineering transport vessel pulls the pontoon anchor chain, thereby driving the pontoon to move downward and closer to the anchoring foundation body. The method for mooring wind turbines using the aforementioned floating wind turbine anchoring foundation device includes: S1. Transport the floating wind turbine anchoring foundation device to the target sea area by engineering transport vessel, and wait for installation; S2. The engineering transport vessel begins to inject ballast water at the stern and actively tilts its stern. The floating wind turbine anchoring foundation device gradually falls into the water through the slipper on the engineering transport vessel. Seawater gradually flows into the anchoring foundation body through the water inlet, and the anchoring foundation body begins to sink. S3. The anchoring foundation is completely sunk to the seabed and sits on the seabed. The pontoon floats on the sea surface due to its own buoyancy. At this time, the wind turbine anchor chain that has been set up is hung on the hook of the pontoon. S4. Connect one end of the pontoon anchor chain to the salvage chain on the engineering transport vessel. The engineering transport vessel pulls the pontoon anchor chain away from the anchoring foundation body. The pulling force is transmitted to the pontoon through the guide wheel. Under the action of the pulling force, the pontoon gradually begins to sink. S5. Until the buoy is completely close to the anchor foundation body, the engineering transport vessel disconnects the buoy anchor chain and then fixes the buoy to the anchor foundation body on the seabed. At this time, the wind turbine is connected to the anchor foundation body through the wind turbine anchor chain to achieve the mooring of the wind turbine.

2. The method for mooring a wind turbine using the floating wind turbine anchoring foundation device according to claim 1, characterized in that, When other wind turbines are moored, including: S6. Remove the pontoon from the anchor foundation and wait for it to rise to the surface; S7. After the buoy rises to the surface, attach the anchor chains of the other wind turbines to the hooks on the buoy. Repeat S4-S5 to pull the buoy to the seabed and complete the mooring of the other wind turbines.

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