A single point mooring device for a floating wind platform

Abstract

The present application relates to a kind of single-point mooring device for floating wind power platform, including cylindrical mooring cylinder, the central hole is opened in the middle part of mooring cylinder, the top end surface of mooring cylinder is fixed with fixed ring, the top of the fixed ring is rotatably installed with rotating ring by connecting pin, so that rotating ring can rotate relative to fixed ring, the outer circumferential surface of the rotating ring is connected with soft rigid arm by first connecting head, and the soft rigid arm is used to be connected with floating wind power platform;The bottom of the fixed ring is connected with mooring cable by second connecting head, and the end of mooring cable is fixed to the seabed through the central hole.It can be used to park floating wind turbine platform in wind direction by using wind vane effect, so as to maximize wind energy acquisition rate, provide a new way for construction and operation of deep sea wind farm.

Description

Technical Field

[0001] This invention relates to the field of marine new energy technology, and in particular to a single-point mooring device for floating wind power platforms. Background Technology

[0002] As the number of nearshore wind farms increases, nearshore wind farm resources are approaching saturation, while deep-sea wind resources are abundant. Currently, the utilization of offshore wind energy is gradually shifting towards deep-sea areas. As exploration extends into the deep sea and water depths increase, stationary wind turbines will become too costly and unsuitable. Deploying floating wind power equipment and building floating wind farms in deep-sea areas will be the main trend for future wind energy utilization.

[0003] Floating wind power equipment consists of two main parts: a floating wind turbine platform and a mooring device. The floating wind turbine platform includes wind turbine units, which are used to capture strong winds at sea to generate electricity, while the mooring device is used to position the floating wind turbine platform.

[0004] Current technologies often employ distributed mooring, which uses distributed mooring cables to connect floating wind turbine platforms to the seabed for positioning. However, floating wind turbine platforms typically carry multiple wind turbines. Due to the wake effect of these multiple turbines and the relatively weak mooring capacity of the distributed mooring cables, the floating wind turbine platforms cannot yaw autonomously and cannot be moored in the windward direction, resulting in low wind energy harvesting efficiency. Summary of the Invention

[0005] In response to the shortcomings of the existing production technologies, the applicant provides a structurally sound single-point mooring device for floating wind power platforms. This device utilizes the wind vane effect to moor the floating wind turbine platform in the windward direction, thereby maximizing wind energy harvesting and providing a new approach for the construction and operation of deep-sea wind farms.

[0006] The technical solution adopted in this invention is as follows:

[0007] A single-point mooring device for a floating wind power platform includes a cylindrical mooring cylinder with a central hole in the middle. A fixed ring is fixed to the top end face of the mooring cylinder. A rotating ring is rotatably mounted on the top of the fixed ring via a connecting pin, so that the rotating ring can rotate relative to the fixed ring. The outer circumference of the rotating ring is connected to a flexible rigid arm via a first connector. The flexible rigid arm is used to connect to the floating wind power platform.

[0008] The bottom of the fixing ring is connected to the mooring cable via a second connector, and the end of the mooring cable passes through the central hole and is fixed to the seabed.

[0009] As a further improvement to the above technical solution:

[0010] The structure of the fixing ring is as follows: it includes a U-shaped seat, and a connecting rod is fixed at the opening of the U-shaped seat.

[0011] A second connector is fitted onto the outer wall of the connecting rod.

[0012] The U-shaped seat is arranged concentrically with the central hole.

[0013] The first connector has the following structure: it includes a cylindrical mounting base, one end of which is fixed to a connecting ring by a pin, and the first connector is connected to a rotating ring by the connecting ring.

[0014] The structure of the second connector is as follows: it includes a first cylinder and a second cylinder arranged concentrically along the axial direction. A U-shaped ring is installed on the outer wall of the second cylinder through a first fixing pin, so that a first mounting hole is formed between the U-shaped ring and the second cylinder. A second fixing pin is installed in the first mounting hole. An open ring is installed on the outer circumference of the second fixing pin, so that a second mounting hole for connecting with the fixing ring is formed between the open ring and the second fixing pin.

[0015] The diameter of the first cylinder is larger than the diameter of the second cylinder, thereby forming a step between the top end face of the first cylinder and the outer circumference of the second cylinder.

[0016] The U-shaped ring and the open ring are connected by a second fixing pin to form a linked structure.

[0017] A rounded corner is provided between the central hole and the bottom end face of the mooring tube.

[0018] The radius of the fillet is 1 / 5 to 1 / 4 of the outer diameter of the mooring tube.

[0019] The beneficial effects of this invention are as follows:

[0020] This invention has a compact and reasonable structure and is easy to operate. By setting a rotating ring, a fixed ring, and a connecting pin, it can utilize the wind vane effect to make the floating wind turbine platform anchored in the windward direction, thereby effectively improving the wind energy capture rate of multi-turbine or towerless floating wind turbines.

[0021] This invention is highly economical, simple to construct, and highly safe. It uses a flexible rigid arm to connect with the floating wind turbine platform, which effectively prevents collisions between the single-point mooring device and the floating wind turbine platform, thus improving operational safety. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention.

[0023] Figure 2 for Figure 1 The main view.

[0024] Figure 3 This is a schematic diagram of the structure of the mooring tube in this invention.

[0025] Figure 4 This is a schematic diagram of the installation structure of the fixed ring and the rotating ring in this invention.

[0026] Figure 5 This is a schematic diagram of the structure of the first connector in this invention.

[0027] Figure 6 This is a schematic diagram of the structure of the second connector in this invention.

[0028] Figure 7 This is a schematic diagram of the present invention in operation.

[0029] The components include: 1. Mooring tube; 2. Fixed ring; 3. Rotating ring; 4. Connecting pin; 5. Flexible rigid arm; 6. Mooring cable; 7. Floating wind turbine platform; 8. First connector; 9. Second connector; 10. Rounded corner; 11. Center hole;

[0030] 201. U-shaped seat; 202. Connecting rod;

[0031] 801. Mounting base; 802. Pin; 803. Connecting ring;

[0032] 901, First cylinder; 902, Second cylinder; 903, First fixing pin; 904, U-shaped ring; 905, Second fixing pin; 906, Open ring. Detailed Implementation

[0033] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0034] The structure and function of this invention are as follows:

[0035] like Figures 1-7 As shown, a single-point mooring device for a floating wind power platform includes a cylindrical mooring cylinder 1 with a central hole 11 in the middle. A fixing ring 2 is fixed to the top end face of the mooring cylinder 1. A rotating ring 3 is rotatably mounted on the top of the fixing ring 2 via a connecting pin 4, allowing the rotating ring 3 to rotate relative to the fixing ring 2. The outer circumference of the rotating ring 3 is connected to a flexible rigid arm 5 via a first connector 8. The flexible rigid arm 5 is used to connect to the floating wind power platform 7. The bottom of the fixing ring 2 is connected to a mooring cable 6 via a second connector 9. The end of the mooring cable 6 passes through the central hole 11 and is fixed to the seabed. The single-point mooring device of the present invention includes a mooring cylinder 1, a fixing ring 2, a rotating ring 3, a connecting pin 4, a flexible rigid arm 5, a mooring cable 6, a first connector 8, and a second connector 9; wherein,

[0036] like Figures 1-3As shown, the mooring cylinder 1 is cylindrical in shape, with a central hole 11 in the middle. The central hole 11 is used to install the mooring cable 6. Figure 3 As shown, a fillet 10 is provided between the center hole 11 and the bottom end face of the mooring tube 1. The radius of the fillet 10 is 1 / 5 to 1 / 4 of the outer diameter of the mooring tube 1. The fillet 10 can prevent the mooring cable 6 from being locally worn at the outlet of the center hole 11 and extend the service life of the mooring cable 6.

[0037] A fixed ring 2 is fixedly installed on the bottom end face of the mooring tube 1. The fixed ring 2 is installed in conjunction with the rotating ring 3 through the connecting pin 4. The fixed ring 2, the rotating ring 3, and the connecting pin 4 are all made of steel. The fixed ring 2 and the connecting pin 4 are in clearance fit, and the rotating ring 3 and the connecting pin 4 are in clearance fit, so that the contact surface between the fixed ring 2 and the rotating ring 3 is not constrained, thereby allowing the rotating ring 3 to rotate 360° relative to the fixed ring 2.

[0038] like Figures 1-3 , Figure 4 As shown, the structure of the fixing ring 2 is as follows: it includes a U-shaped seat 201, and a connecting rod 202 is fixed at the opening of the U-shaped seat 201; wherein, the opening of the U-shaped seat 201 is arranged and installed facing the central hole 11, the U-shaped seat 201 is fixed to the top end face of the mooring tube 1 by welding, the U-shaped seat 201 is concentrically arranged with the central hole 11, and the connecting rod 202 is used to install the second connector 9. The connecting rod 202 is located directly above the central hole 11, so that the mooring cable 6 can pass through the central hole 11 to the seabed;

[0039] A second connector 9 is fitted onto the outer wall of the connecting rod 202. The second connector 9 connects the mooring cable 6 to the connecting rod 202. Figure 6 As shown, the structure of the second connector 9 is as follows: it includes a first cylinder 901 and a second cylinder 902 arranged concentrically along the axial direction; the first cylinder 901 is used to connect the mooring cable 6, and the second connector 9 can be fixed to one end of the mooring cable 6 by means of adhesive or by inserting the cable into the first cylinder 901, etc. The other end of the mooring cable 6 passes through the central hole 11 to the seabed, so that the mooring cylinder 1 can float in the designated sea area;

[0040] A U-shaped ring 904 is installed on the outer wall of the second cylinder 902 through a first fixing pin 903. The opening of the U-shaped ring 904 faces the first cylinder 901. The second cylinder 902 extends into the opening of the U-shaped ring 904. The first fixing pin 903 passes through both the second cylinder 902 and the U-shaped ring 904 radially, thereby fixing the U-shaped ring 904 to the second cylinder 902 and forming a first mounting hole between the U-shaped ring 904 and the second cylinder 902.

[0041] A second fixing pin 905 is fitted into the first mounting hole. An open ring 906 is fitted onto the outer circumferential surface of the second fixing pin 905. The U-shaped ring 904 and the open ring 906 form a linked structure through the second fixing pin 905. A second mounting hole for connecting to the fixing ring 2 is formed between the open ring 906 and the second fixing pin 905. The connecting rod 202 is passed through the second mounting hole, thereby mounting the second connector 9 onto the outer circumferential surface of the connecting rod 202.

[0042] The diameter of the first cylinder 901 is larger than the diameter of the second cylinder 902, thereby forming a step between the top end face of the first cylinder 901 and the outer circumferential surface of the second cylinder 902. The step facilitates the compact structure of the second connector 9.

[0043] The rotating ring 3 is connected to the flexible rigid arm 5 via the first connector 8, as follows: Figure 5 As shown, the structure of the first connector 8 is as follows: it includes a cylindrical mounting base 801, one end of which is fixed to the connecting ring 803 by a pin 802, and the first connector 8 is connected to the rotating ring 3 by the connecting ring 803.

[0044] The other end of the mounting base 801 is fixed to one end of the flexible rigid arm 5, and the other end of the flexible rigid arm 5 is connected to the floating wind power platform 7.

[0045] Since the rotating ring 3 can rotate relative to the fixed ring 2, the first connector 8 and the flexible rigid arm 5 can rotate relative to the fixed ring 2.

[0046] The soft rigid arm 5 is made of steel with low carbon content and low hardness. It is stable, strong and durable, and is not easy to break during the operation of the single point mooring device.

[0047] The number of mooring cables 6 is three, roughly distributed at 120°, and can be made of anchor chain or high molecular polyester fiber material.

[0048] The working process of this invention is as follows:

[0049] One end of the flexible rigid arm 5 is connected to the rotating ring 3 via the connecting ring 803, while the other end is tied to the column of the floating wind power platform 7, so that the flexible rigid arm 5 can rotate freely relative to the fixed ring 2 and the mooring cylinder 1.

[0050] One end of the mooring cable 6 is connected to the connecting rod 202 through the second mounting hole, while the other end passes through the central hole 11 to the seabed and is fixed to the corresponding seabed position according to the sea conditions of the target sea area.

[0051] The mooring cylinder 1 floats on the sea surface and achieves the mooring and positioning effect of the floating wind power platform 7 through the flexible rigid arm 5 and the mooring cable 6;

[0052] like Figure 7As shown, the floating wind power platform 7 is equipped with three columns, one of which is used to connect to the flexible rigid arm 5, and the other two are used to install the wind turbine.

[0053] When the flexible rigid arm 5 is connected to one of the columns of the floating wind turbine platform 7, it is necessary to ensure that the flexible rigid arm 5 is perpendicular to the windward side of the two wind turbines. This allows the floating wind turbine platform 7 to drift when crosswinds blow across the wind turbine blades, causing the rotating ring 3 to rotate relative to the fixed ring 2. At this time, based on the wind vane effect, the floating wind turbine platform 7 causes the rotating ring 3 to deflect around the mooring cylinder 1 in the direction of the oncoming wind, and the floating wind turbine platform 7 to eventually moor in the windward direction, thereby improving the wind energy capture rate of the wind turbine.

[0054] This invention has a simple structure and high safety. Compared with traditional mooring devices, it is more economical and suitable for providing mooring and positioning functions for multi-turbine or towerless floating wind power platforms. It can also significantly improve the wind energy capture rate of such floating wind power equipment, and can provide a new way for the exploitation of deep-sea wind energy resources in my country.

[0055] The above description is an explanation of the present invention and not a limitation thereof. The scope of the present invention is defined by the claims. Within the scope of protection of the present invention, any form of modification may be made.

Claims

1. A single-point mooring device for a floating wind power platform, characterized in that: The system includes a cylindrical mooring tube (1), with a central hole (11) in the middle. A fixed ring (2) is fixed to the top end face of the mooring tube (1). A rotating ring (3) is rotatably mounted on the top of the fixed ring (2) via a connecting pin (4), so that the rotating ring (3) can rotate 360° relative to the fixed ring (2). The outer circumference of the rotating ring (3) is connected to a flexible rigid arm (5) via a first connector (8). The flexible rigid arm (5) is used to connect to a floating wind power platform (7). The floating wind power platform (7) drives the rotating ring (3) to deflect around the mooring tube (1) in the direction of the wind. The flexible rigid arm (5) is a rigid connector. The bottom of the fixing ring (2) is connected to the mooring cable (6) through the second connector (9), and the end of the mooring cable (6) passes through the central hole (11) and is fixed to the seabed.

2. A single-point mooring device for a floating wind power platform as described in claim 1, characterized in that: The structure of the fixing ring (2) is as follows: it includes a U-shaped seat (201) and a connecting rod (202) is fixed at the opening of the U-shaped seat (201).

3. A single-point mooring device for a floating wind power platform as described in claim 2, characterized in that: A second connector (9) is fitted onto the outer wall of the connecting rod (202).

4. A single-point mooring device for a floating wind power platform as described in claim 2, characterized in that: The U-shaped seat (201) is arranged concentrically with the central hole (11).

5. A single-point mooring device for a floating wind power platform as described in claim 1, characterized in that: The structure of the first connector (8) is as follows: it includes a cylindrical mounting base (801), one end of which is fixed to the connecting ring (803) by a pin (802), and the first connector (8) is connected to the rotating ring (3) by the connecting ring (803).

6. A single-point mooring device for a floating wind power platform as described in claim 1, characterized in that: The structure of the second connector (9) is as follows: it includes a first cylinder (901) and a second cylinder (902) arranged concentrically along the axial direction. A U-shaped ring (904) is installed on the outer wall of the second cylinder (902) through a first fixing pin (903), and a first mounting hole is formed between the U-shaped ring (904) and the second cylinder (902). A second fixing pin (905) is installed in the first mounting hole. An open ring (906) is installed on the outer circumference of the second fixing pin (905), and a second mounting hole for connecting with the fixing ring (2) is formed between the open ring (906) and the second fixing pin (905).

7. A single-point mooring device for a floating wind power platform as described in claim 6, characterized in that: The diameter of the first cylinder (901) is larger than the diameter of the second cylinder (902), thereby forming a step between the top end face of the first cylinder (901) and the outer circumference of the second cylinder (902).

8. A single-point mooring device for a floating wind power platform as described in claim 6, characterized in that: The U-shaped ring (904) and the open ring (906) are connected by a second fixing pin (905) to form a linked structure.

9. A single-point mooring device for a floating wind power platform as described in claim 1, characterized in that: A fillet (10) is provided between the central hole (11) and the bottom end face of the mooring tube (1).

10. A single-point mooring device for a floating wind power platform as described in claim 9, characterized in that: The radius of the fillet (10) is 1 / 5 to 1 / 4 of the outer diameter of the mooring tube (1).

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