Anchoring device for floating foundation of offshore wind generating set

Abstract

The utility model discloses an anchoring device for a floating foundation of an offshore wind generating set. The anchoring device comprises a seabed and a wind generator, a seabed fixing device is arranged on the seabed, a sea surface suspension device is arranged above the seabed fixing device, the wind turbine is fixedly mounted on the sea surface suspension device, and the seabed fixing device comprises a suction barrel; according to the device, the suction bucket is installed on the seabed, seawater and air in the suction bucket are pumped out, the suction bucket can adsorb the surface of the seabed under the action of negative pressure, meanwhile, the first balancing weight is matched to serve as a balance weight module at the bottom, and the first balancing weight sinks on the seabed through the mass of the first balancing weight and pulls the fixed platform; the fixed platform is pulled by the first balancing weight to generate downward force to press the suction bucket through the first supporting rod, so that the suction bucket is adsorbed more firmly, the two are matched with each other to enable the seabed fixed part to be firmer, and the seabed fixed part can be used for integrally dragging the sea surface suspension device to prevent the sea surface suspension device from being flapped by sea waves to drift.

Description

Technical Field

[0001] This utility model relates to the fields of marine engineering and offshore wind power technology, specifically to an anchoring device for a floating foundation of an offshore wind turbine generator. Background Technology

[0002] A floating offshore wind power device and its floating foundation are disclosed in announcement number CN207598430U. The floating foundation comprises multiple frame structures spaced apart from the inside out, with adjacent frame structures connected by multiple connecting rods. Each frame structure includes an upper floating body, a lower floating body, and multiple supporting bodies. Both the upper and lower floating bodies are tubular bodies sealed at both ends. The upper floating body is fixed to the lower floating body by the multiple supporting bodies. The multiple spaced-apart frame structures separate waves to achieve wave damping. Furthermore, the supporting bodies support and fix the upper floating body to the lower floating body, forming a truss structure, making the frame structure simple and robust, and providing good load adaptability on the water surface.

[0003] The aforementioned equipment uses an upper and lower floating body to form an installation platform. The wind turbine is installed on the upper floating body. The installation platform of this equipment is completely suspended on the sea surface and is only suitable for installation on relatively calm sea surfaces. The frame structure of this equipment can eliminate some small sea surface fluctuations. If the sea surface has large waves, it will cause the equipment to float and sway. Moreover, the equipment has no fixed structure, which can easily cause its floating foundation to be pushed away from its original position by the waves. This results in a narrow range of installation environments. Therefore, an anchoring device for the floating foundation of offshore wind turbine generators is needed to meet people's needs. Utility Model Content

[0004] The purpose of this invention is to provide an anchoring device for the floating foundation of an offshore wind turbine generator set, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an anchoring device for a floating foundation of an offshore wind turbine generator, comprising a seabed and a wind turbine; a seabed fixing device is provided on the seabed, a sea surface suspension device is provided above the seabed fixing device, and the wind turbine is fixedly installed on the sea surface suspension device;

[0006] Preferably, the seabed fixing device includes a suction barrel, which is fixedly installed on the seabed. The suction barrel is equipped with a suction pipe that communicates with the interior of the suction barrel. A sealing valve is provided on the suction pipe. A fixing platform is installed above the suction barrel, and a first support rod is installed between the fixing platform and the suction barrel.

[0007] Preferably, a first fixing plate is fixedly installed at the end of the first support rod near the suction barrel, and a second fixing plate is fixedly installed at the end of the first support rod near the fixed platform.

[0008] Preferably, both the first and second fixed plates have fixing holes, and fixing bolts are installed in the internal threads of the fixing holes. The first fixed plate is threadedly connected to the top of the suction barrel by the fixing bolts, and the second fixed plate is threadedly connected to the bottom of the fixed platform by the fixing bolts.

[0009] Preferably, a first hook is fixedly installed at the center of the bottom of the fixed platform, a first counterweight is installed on the seabed, a second hook is installed on the first counterweight, and a first lifting chain connects the first hook and the second hook.

[0010] Preferably, the sea surface suspension device includes a suspension block, which is set above a fixed platform. A third hook is fixedly installed at the center of the bottom of the suspension block. A second counterweight is set below the third hook. A fourth hook is fixedly installed on the second counterweight. A second chain connects the third hook and the fourth hook. The second counterweight is suspended from the bottom of the suspension block by the second chain.

[0011] Preferably, an installation plate is fixedly installed above the suspended block, an installation platform is installed above the installation plate, and a second support rod is fixedly installed between the installation platform and the installation plate.

[0012] Preferably, a fifth hook is fixedly installed on the bottom of the suspension block and on the first support rod, and a third lifting chain connects the fifth hook on the suspension block and the fifth hook on the first support rod.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) This utility model is achieved by installing a suction bucket on the seabed and removing the seawater and air from the suction bucket. Under negative pressure, the suction bucket will adhere to the surface of the seabed. At the same time, the first counterweight block is used as the bottom counterweight module. The first counterweight block sinks to the seabed by its own mass and pulls the fixed platform. The fixed platform is pulled by the first counterweight block and generates a downward force, which presses the suction bucket through the first support rod, making the suction bucket adhere more firmly. The two work together to make the fixed part on the seabed more secure. The entire floating device on the sea surface can be dragged by the seabed fixing device to prevent the floating device on the sea surface from drifting due to the waves.

[0015] (2) The suspension power is provided by the suspension block to suspend the wind turbine on the sea surface. During installation, the weight of the second counterweight is controlled so that the installation plate sinks below the sea level and the installation platform is above the sea level. When waves pass by, the waves will pass through the gap between the second support rods, so that the installation platform is less affected by the impact of the waves, thus avoiding damage to the floating device on the sea surface. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of an anchoring device for a floating foundation of an offshore wind turbine generator proposed in this utility model.

[0017] Figure 2 This is a structural diagram of the first support rod and the fixing platform of the anchoring device for the floating foundation of an offshore wind turbine generator proposed in this utility model.

[0018] Figure 3 This is a structural diagram of the first and second fixing plates of the anchoring device for a floating foundation of an offshore wind turbine generator proposed in this utility model.

[0019] Figure 4 This is a structural diagram of the fixing platform and the first counterweight block of the anchoring device for the floating foundation of an offshore wind turbine generator proposed in this utility model.

[0020] Figure 5 This is a structural diagram of the second support rod and installation platform of the anchoring device for the floating foundation of an offshore wind turbine generator proposed in this utility model.

[0021] Figure 6 This is a structural diagram of the fifth hook and the third hook of the anchoring device for the floating foundation of an offshore wind turbine generator proposed in this utility model.

[0022] In the diagram: 1. Seabed; 2. Subsea fixed device; 3. Sea surface suspension device; 4. Wind turbine; 200. Suction bucket; 201. Suction pipe; 202. Sealing valve; 203. First fixed plate; 204. Second fixed plate; 205. First support rod; 206. Fixing hole; 207. Fixing bolt; 208. Fixing platform; 209. First hook; 210. First counterweight; 211. Second hook; 212. First lifting chain; 300. Suspension block; 301. Third hook; 302. Second counterweight; 303. Fourth hook; 304. Second lifting chain; 305. Mounting plate; 306. Second support rod; 307. Mounting platform; 308. Fifth hook; 309. Third lifting chain. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1: Please refer to Figure 1-6 This utility model provides a technical solution: an anchoring device for a floating foundation of an offshore wind turbine, including a seabed 1 and a wind turbine 4; in order to prevent the floating foundation from drifting when installed on a sea surface with large waves, a seabed fixing device 2 is provided on the seabed 1, a sea surface suspending device 3 is provided above the seabed fixing device 2, the wind turbine 4 is fixedly installed on the sea surface suspending device 3, the wind turbine 4 is suspended on the sea surface through the sea surface suspending device 3, and the seabed fixing device 2 is sunk to the seabed as a counterweight and connected to the sea surface suspending device 3 to prevent it from drifting;

[0025] To achieve the effect of counterweight fixation, the seabed fixing device 2 includes a suction tank 200, which is fixedly installed on the seabed 1. The suction tank 200 is equipped with a suction pipe 201 that communicates with the interior of the suction tank 200. A sealing valve 202 is installed on the suction pipe 201. A fixing platform 208 is installed above the suction tank 200. A first support rod 205 is installed between the fixing platform 208 and the suction tank 200. A first fixing plate 203 is fixedly installed at one end of the first support rod 205 near the suction tank 200, and a second fixing plate 204 is fixedly installed at the other end of the first support rod 205 near the fixing platform 208. Both the first fixing plate 203 and the second fixing plate 204 have fixing holes 206, and fixing bolts are threaded into the fixing holes 206. Bolt 207 is used to connect the first fixing plate 203 to the top of the suction barrel 200 via bolt 207. The second fixing plate 204 is connected to the bottom of the fixing platform 208 via bolt 207. A first hook 209 is fixedly installed at the center of the bottom of the fixing platform 208. A first counterweight 210 is installed on the seabed 1. A second hook 211 is installed on the first counterweight 210. A first chain 212 connects the first hook 209 and the second hook 211. The sea surface suspension device 3 includes a suspension block 300, which is positioned above the fixing platform 208. A third hook 301 is fixedly installed at the center of the bottom of the suspension block 300. A second counterweight 302 is positioned below the third hook 301. A first chain 212 is fixedly installed on the second counterweight 302. A fourth hook 303 is fixedly installed. A second chain 304 connects the third hook 301 and the fourth hook 303. The second counterweight 302 is suspended from the bottom of the suspension block 300 via the second chain 304. During installation, the suction tank 200 is placed on the seabed 1. The opening of the suction tank 200 is pressed down into the seabed 1. The external negative pressure extraction device is connected to the suction pipe 201 to extract the seawater and air from the suction tank 200. After extraction, the sealing valve 202 is turned to close the suction pipe 201 channel, and the extraction device is removed. At this time, the suction tank 200 will firmly adhere to the seabed 1 under negative pressure. This principle is similar to cupping, where negative pressure generated inside the cupping jar will firmly adhere to the skin, thus facilitating subsequent installation. The first fixing plate 203 is fixed to the suction tank 200 with fixing bolts 207. Then, the fixing platform 208 is fixed to the second fixing plate 204 with fixing bolts 207. At this time, the overall frame is installed. A first counterweight 210 of appropriate mass is selected to ensure that the mass of the first counterweight 210 can counteract the buoyancy generated by the seawater and the suspension block 300, so that the first counterweight 210 can remain submerged on the seabed 1. The first chain 212 is used to hang the first counterweight 210 at the bottom of the fixing platform 208. At this time, the first counterweight 210 sinks on the seabed 1 by its own mass and pulls the fixing platform 208. The fixing platform 208 is pulled by the first counterweight 210, generating a downward force that presses the suction tank 200 through the first support rod 205.This makes the suction bucket 200 adhere more firmly, and the two work together to make the underwater fixation part more secure. The underwater fixation device 2 can be used to drag the surface suspension device 3 as a whole, preventing the surface suspension device 3 from drifting due to wave action. The first counterweight 210 is made of a solid material with a density greater than water, such as steel or iron.

[0026] Example 2: Figure 5-6 To create a floating foundation capable of withstanding wave impact, an installation plate 305 is fixedly installed above the suspension block 300, and an installation platform 307 is installed above the installation plate 305. A second support rod 306 is fixedly installed between the installation platform 307 and the installation plate 305. Fifth hooks 308 are fixedly installed on the bottom of the suspension block 300 and on the first support rod 205. A third lifting chain 309 connects the fifth hooks 308 on the suspension block 300 and the fifth hooks 308 on the first support rod 205. During installation, by controlling the weight of the second counterweight 302, the installation plate 305 is submerged below the sea level while the installation platform 307 remains above the sea level. When waves pass by, the waves and ripples will pass through the gaps between the second support rods 306. At this time, the overall contact area with the waves is smaller, which reduces the impact of the waves on the installation platform and prevents the floating device 3 from being damaged by the waves. Finally, the suspending block 300 is connected to the fifth hook 308 on the first support rod 205 through the third chain 309, so that the suspending block 300 is dragged by the fifth hook 308. The second counterweight 302 is a solid material with a density greater than water, such as steel and iron. The suspending block 300 has a closed hollow structure to provide a larger levitation force. The other features are the same as in embodiment 1.

[0027] The working principle is as follows: During installation, the suction tank 200 is placed on the seabed 1. The opening of the suction tank 200 is pressed down into the seabed 1. The external negative pressure extraction device is connected to the suction pipe 201 to extract the seawater and air from the suction tank 200. After extraction, the sealing valve 202 is turned to seal the suction pipe 201, and the extraction device is removed. At this point, the suction tank 200, under negative pressure, will firmly adhere to the seabed 1. This principle is similar to cupping; the negative pressure generated inside the cupping jar will firmly adhere to the skin, facilitating subsequent installation. First, the first fixing plate 203... The platform 208 is then fixed to the suction tank 200 using bolts 207, and subsequently fixed to the second fixed plate 204 using bolts 207. At this point, the overall frame installation is complete. A first counterweight 210 of suitable mass is selected to ensure that its mass can counteract the buoyancy of the seawater and the suspension block 300, allowing it to remain submerged on the seabed 1. The first counterweight 210 is then suspended from the bottom of the fixed platform 208 using the first chain 212. The first counterweight 210, using its own mass, sinks to the seabed 1 and pulls the fixed platform 208. 08. The fixed platform 208 is pulled downward by the first counterweight 210, generating a downward force that presses the suction barrel 200 against the first support rod 205, making the suction barrel 200 more firmly attached. The two work together to make the underwater fixed part more secure, and the entire underwater fixed device 2 can be used to tow the surface suspension device 3, preventing the surface suspension device 3 from drifting due to waves. During installation, by controlling the weight of the second counterweight 302, the mounting plate 305 is submerged below the sea level and the mounting platform 307 is above the sea level. When waves pass by, the waves and sea ripples will be pushed off the second support rod 205. The suspension block 300 passes through the gap between the rods 306, thus reducing the overall contact area with the waves and minimizing the impact of waves on the installation platform. This helps prevent damage to the suspension device 3 from wave impacts. Finally, the suspension block 300 is connected to the fifth hook 308 on the first support rod 205 via the third chain 309, thereby using the fifth hook 308 to hold the suspension block 300 in place. The second counterweight 302 and the first counterweight 210 are both solid materials with a density greater than water, such as steel and iron. The suspension block 300 has a closed hollow structure to provide greater levitation force.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An anchoring device for a floating foundation of an offshore wind turbine generator, comprising a seabed (1) and a wind turbine (4); characterized in that: The seabed (1) is provided with a seabed fixing device (2), and a sea surface suspension device (3) is provided above the seabed fixing device (2). The wind turbine (4) is fixedly installed on the sea surface suspension device (3). The seabed fixed device (2) includes a suction barrel (200), which is fixedly installed on the seabed (1). The suction barrel (200) is provided with a suction pipe (201) which communicates with the inside of the suction barrel (200). A sealing valve (202) is provided on the suction pipe (201). A fixed platform (208) is installed above the suction barrel (200). A first support rod (205) is installed between the fixed platform (208) and the suction barrel (200).

2. The anchoring device for a floating foundation of an offshore wind turbine generator as described in claim 1, characterized in that: The first support rod (205) is fixedly installed with a first fixing plate (203) at the end near the suction barrel (200), and a second fixing plate (204) is fixedly installed at the end of the first support rod (205) near the fixing platform (208).

3. The anchoring device for a floating foundation of an offshore wind turbine generator according to claim 2, characterized in that: The first fixed plate (203) and the second fixed plate (204) are both provided with fixing holes (206). Fixing bolts (207) are threaded into the fixing holes (206). The first fixed plate (203) is threadedly connected to the top of the suction barrel (200) by the fixing bolts (207), and the second fixed plate (204) is threadedly connected to the bottom of the fixed platform (208) by the fixing bolts (207).

4. The anchoring device for a floating foundation of an offshore wind turbine generator according to claim 3, characterized in that: A first hook (209) is fixedly installed at the center of the bottom of the fixed platform (208), a first counterweight (210) is installed on the seabed (1), a second hook (211) is installed on the first counterweight (210), and a first chain (212) is connected between the first hook (209) and the second hook (211).

5. The anchoring device for a floating foundation of an offshore wind turbine generator according to claim 1, characterized in that: The sea surface suspension device (3) includes a suspension block (300), which is set above a fixed platform (208). A third hook (301) is fixedly installed at the center of the bottom of the suspension block (300). A second counterweight (302) is set below the third hook (301). A fourth hook (303) is fixedly installed on the second counterweight (302). A second chain (304) connects the third hook (301) and the fourth hook (303). The second counterweight (302) is suspended from the bottom of the suspension block (300) by the second chain (304).

6. The anchoring device for a floating foundation of an offshore wind turbine generator according to claim 5, characterized in that: An installation plate (305) is fixedly installed above the suspended block (300), and an installation platform (307) is installed above the installation plate (305). A second support rod (306) is fixedly installed between the installation platform (307) and the installation plate (305).

7. The anchoring device for a floating foundation of an offshore wind turbine generator according to claim 6, characterized in that: A fifth hook (308) is fixedly installed on the bottom of the suspension block (300) and on the first support rod (205), and a third hanging chain (309) is connected between the fifth hook (308) on the suspension block (300) and the fifth hook (308) on the first support rod (205).

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