Floating type draught fan towing attitude self-adaptive stabilizing device

Abstract

The utility model relates to the technical field of offshore wind power generation, in particular to a floating type draught fan towing posture self-adaption stabilizing device which comprises a wind driven generator body and a mooring structure and further comprises a buoyancy supporting structure which comprises a square supporting frame body, a draught fan installation table and a semi-submersible floating box. The semi-submersible buoyancy tanks are fixed to the four corners of the supporting frame body, and the wind driven generator body can be installed on the fan installation table. The stabilizing structure comprises a V-shaped fixing frame and a stabilizing floating body, the two ends of the fixing frame are fixed to the supporting frame body, the free end of the fixing frame inclines upwards, the stabilizing floating body is fixed to the free end of the fixing frame, and the section of the stabilizing floating body is in an inverted isosceles triangle shape. The stable floating bodies on the fixing frame make contact with the sea surface, buoyancy is increased, part of the backward inclination trend generated by pulling force of the wind driven generator body is counteracted, the inclination angle can be restrained from being enlarged to a certain degree, and the problem that a traditional floating body is prone to inclination and rollover during towing is solved.

Description

Technical Field

[0001] This utility model relates to the field of offshore wind power generation technology, specifically to a floating wind turbine towing attitude adaptive stabilization device. Background Technology

[0002] Floating wind turbines are an innovative type of wind power generation equipment used in the field of offshore wind power. The towing and mooring installation of floating wind turbines often require specialized vessels and equipment, and the installation is carried out on land. After installation, the floating wind turbine is towed to the placement point by a vessel.

[0003] Most floating wind turbines currently consist of a buoyancy support structure, a mooring structure, and the wind turbine itself. The existing floating support structures are roughly divided into three types: single-column (Spar), semi-submersible (Semi-submersible), and tension leg (TLP). Each of these three structures has its own advantages and disadvantages and can be replaced according to the water depth to adapt to different usage scenarios.

[0004] However, with existing floating support structures, most floating towed structures are subject to the pull of ships and / or the influence of waves during the towing process. This can cause the wind turbine body, which is vertically attached to the floating support structure, to tilt in the direction of the ship's pull or backward. When the tilt angle is too large, it may cause the floating support structure and the wind turbine body to capsize. It is difficult to right the floating support structure and the wind turbine body on the sea surface, and it is often necessary to tow them back to the ground for righting. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a floating wind turbine towing attitude adaptive stabilization device, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides a floating wind turbine towing attitude adaptive stabilization device, including a wind turbine generator body and a mooring structure, as well as a buoyancy support structure, which includes a square support frame, a wind turbine mounting platform, and a semi-submersible buoy. The wind turbine mounting platform is fixed at the center of the support frame, and the semi-submersible buoy is fixed at the four corners of the support frame. The wind turbine generator body can be mounted on the wind turbine mounting platform. The stabilization structure includes a V-shaped fixed frame and a stabilizing float. The two ends of the fixed frame are fixed to the support frame, and the free end of the fixed frame is inclined upward. The stabilizing float is fixed to the free end of the fixed frame, and the cross-section of the stabilizing float is an inverted isosceles triangle.

[0007] Optionally, the edge between the two isosceles surfaces of the stabilizing float is a semi-circular arc edge, and the bottom surface of the arc edge is parallel to the fixing frame.

[0008] Optionally, the semi-submersible buoys are at least partially higher than the support frame, and each semi-submersible buoy has a counterweight fixed to its bottom.

[0009] Optionally, the counterweight is fixed with a threaded post, which is threadedly connected to the semi-submersible buoy.

[0010] Optionally, the free end of the mounting bracket is fixed with two oppositely arranged connecting plates, and the stabilizing float is bolted to the connecting plates.

[0011] Optionally, each semi-submersible buoy is fixed with a chain link on its top, and the two chains on the semi-submersible buoy can be hooked together by a ship's tow hook.

[0012] Optionally, each link is equipped with a chain post at the bottom, which is threadedly connected to the semi-submersible buoy.

[0013] Optionally, the semi-submersible pontoon can be cylindrical.

[0014] Compared with the prior art, this utility model provides a floating wind turbine towing attitude adaptive stabilization device, which has the following beneficial effects:

[0015] 1. This utility model increases buoyancy by having a stable float on the fixed frame contact the sea surface, which partially counteracts the backward tilting tendency of the wind turbine body caused by the tension. When tilting forward, the underwater volume of the stable float at the free end of the fixed frame increases due to the forward tilt, and the buoyancy on the rear side increases, forming a backward restoring torque. This is achieved automatically through buoyancy without the need for additional power control, which can suppress the expansion of the tilt angle to a certain extent and solve the problem of easy tilting and capsizing of traditional float towing.

[0016] 2. This utility model uses bolts to fix the stabilizing float and the connecting piece, allowing the stabilizing float and the fixing frame to be quickly disassembled and assembled, so that the stabilizing float can be transported independently and assembled on site with the fixing frame, reducing the difficulty of transporting large components;

[0017] 3. This utility model allows two chain links to be hooked by the same tow hook, forming a dual-point synchronous traction mode. Compared with single-point towing, dual-point traction can reduce the lateral displacement of the float and suppress the "snake-like swing" during towing. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 It shows Figure 1 A schematic diagram of the side view structure;

[0020] Figure 3 It shows Figure 1 A top-view structural diagram;

[0021] Figure 4 A schematic diagram of the structure on the semi-submersible buoy is shown.

[0022] In the diagram: 1. Wind turbine body; 2. Mooring structure; 3. Support frame; 4. Wind turbine mounting platform; 5. Semi-submersible buoy; 6. Fixing frame; 7. Stabilizing float; 8. Counterweight; 9. Threaded column; 10. Connecting piece; 11. Chain link; 12. Chain column. 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] Floating wind turbines mainly consist of the following parts:

[0025] The wind turbine itself, similar to traditional onshore or stationary offshore wind turbines, includes blades, hub, gearbox, generator, etc., and is responsible for converting wind energy into electrical energy;

[0026] The floating structure provides buoyancy, supports the main body of the wind turbine, and keeps it stable.

[0027] A mooring structure consists of anchor chains, steel cables, and anchors (such as gravity anchors and suction anchors) to fix the floating body to the seabed and prevent it from drifting with ocean currents.

[0028] Cable systems are used to transmit electrical energy and connect wind turbines to onshore substations or submarine cable networks.

[0029] The floating structure uses its own buoyancy to offset the weight of the wind turbine and the wind load, allowing the wind turbine to float on the sea surface. The mooring structure allows the floating body to rise and fall with the waves within a certain range, but restricts its horizontal displacement to ensure stable power generation of the wind turbine. After the wind turbine generates electricity, the electricity is transmitted to the shore or connected to the offshore power grid through submarine cables.

[0030] Floating wind turbines are mainly used in the following scenarios, and mooring structures can be selected according to different scenarios: deep sea waters, complex seabed topography (such as areas with many seabed rocks and soft sediments, where it is difficult to build fixed foundations), and near-shore areas with abundant wind energy resources.

[0031] Example: Please refer to Figures 1 to 4According to an embodiment of this utility model, a technical solution is provided: a floating wind turbine towing attitude adaptive stabilization device, including a wind turbine body 1 and a mooring structure 2, and a buoyancy support structure, which includes a square support frame 3, a wind turbine mounting platform 4 and a semi-submersible buoy 5. The wind turbine mounting platform 4 is fixed at the center of the support frame 3, and the semi-submersible buoy 5 is fixed at the four corners of the support frame 3. The wind turbine body 1 can be installed on the wind turbine mounting platform 4. The stabilization structure includes a V-shaped fixing frame 6 and a stabilizing float 7. The two ends of the fixing frame 6 are fixed to the support frame 3, and the free end of the fixing frame 6 is inclined upward. The stabilizing float 7 is fixed to the free end of the fixing frame 6, and the cross-section of the stabilizing float 7 is an inverted isosceles triangle.

[0032] It should be noted that, in this embodiment, the mooring structure 2 consists of a chain and an anchor, as can be seen. Figure 1 Each semi-submersible buoy 5 is fixed with a mooring structure 2 to increase its stability. During the towing process, the chain and anchor will not be lowered. They can be rolled up or placed on the support frame 3 or the wind turbine mounting platform 4. If the mooring structure 2 uses an anchor, its installation position should be at the bottom of the wind turbine mounting platform 4. A single anchor is sufficient.

[0033] The floating wind turbine towing attitude adaptive stabilization device with the above structure transmits the tension to the support frame 3 when the ship tows the floating body. The fixed frame 6 away from the towing tilts downward, causing the stabilizing floating body 7 on the fixed frame 6 to contact the sea surface, increasing buoyancy and offsetting part of the backward tilting tendency of the wind turbine body 1 caused by the tension. When tilting forward, the underwater volume of the stabilizing floating body 7 at the free end of the fixed frame 6 increases due to the forward tilt, increasing the buoyancy on the rear side and forming a backward restoring torque. This is achieved automatically through buoyancy without the need for additional power control, which can suppress the expansion of the tilt angle to a certain extent and solve the problem of easy tilting and capsizing in traditional floating body towing.

[0034] The edge between the two isosceles surfaces of the stable float 7 is a semi-circular arc edge, and its bottom surface is parallel to the fixed frame 6. The semi-circular arc edge reduces water resistance and reduces towing energy consumption.

[0035] The semi-submersible buoy 5 is at least partially higher than the support frame 3. Each semi-submersible buoy 5 has a counterweight 8 fixed to its bottom, and the counterweight 8 is fixed with a threaded post 9. The threaded post 9 is threadedly connected to the semi-submersible buoy 5. The upper part of the buoy that is exposed above the water surface can serve as a wave-damping buffer structure to reduce the direct impact of waves on the support frame 3. Especially when encountering lateral waves, the buoy above the water surface can block part of the wave height and reduce the impact force. The counterweight 8 and the semi-submersible buoy 5 are connected by standardized threads, which facilitates modular production and replacement. The counterweight 8 can be prefabricated using high-density materials such as cast iron and concrete. It should also be noted that in shallow water areas, the weight of the counterweight 8 can be reduced to reduce the draft of the buoy and avoid the risk of hitting the bottom. In deep water areas or when high stability is required, the weight of the counterweight 8 can be increased and the spacing increased to maximize the anti-overturning capacity.

[0036] The free end of the fixed frame 6 is fixed with two oppositely arranged connecting pieces 10. The stabilizing float 7 is bolted to the connecting pieces 10, which allows the stabilizing float 7 to be quickly disassembled and assembled with the fixed frame 6. This allows the stabilizing float 7 to be transported independently and assembled on site with the fixed frame 6, reducing the difficulty of transporting large components.

[0037] Each semi-submersible buoy 5 has a chain link 11 fixed on its top. The two chain links 11 on the semi-submersible buoy 5 can be hooked together by the ship's tow hook. Each semi-submersible buoy 5 has a chain link 11 on its top, and the two chain links 11 can be hooked by the same tow hook, forming a dual-point synchronous traction mode. Compared with single-point towing, dual-point traction can reduce the lateral displacement of the buoy by more than 60% (calculated based on the spacing of the chain links 11), suppress the "snake-like sway" during towing, and significantly improve the course stability, especially in crosswind or cross wave conditions.

[0038] The chain link 11 and the tow hook can adopt a standardized interface design (such as the internationally common D-type chain link 11 or shackle) to achieve rapid hooking / unhooking within 3 minutes, which greatly improves the efficiency of offshore operations.

[0039] Each link 11 has a post 12 at its bottom. The post 12 is threaded to the semi-submersible buoy 5. The post 12 serves as the connecting component between the link 11 and the semi-submersible buoy 5. The post 12 is detachably fixed by means of threads. The threaded connection does not require welding or complicated tools. The link 11 can be installed, removed or replaced within 5 minutes with just a wrench.

[0040] The semi-submersible pontoon 5 is cylindrical with a smooth, edgeless surface, allowing water to flow uniformly in the circumference. It has low flow resistance (friction resistance is dominant, and pressure resistance is minimal). Especially during towing, the cylindrical axis is aligned with the towing direction, which can reduce hydrodynamic resistance to 60% to 70% of that of traditional square pontoons. Compared to the right-angled edges of square pontoons (which are prone to stress concentration due to "slamming loads"), the cylindrical structure has a more uniform distribution of impact loads, and the structural fatigue life is increased by about 15% to 20%.

[0041] 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. A floating wind turbine towing attitude adaptive stabilization device, comprising a wind turbine body (1) and a mooring structure (2), characterized in that: Also includes The buoyancy support structure includes a square support frame (3), a wind turbine mounting platform (4), and a semi-submersible buoy (5). The wind turbine mounting platform (4) is fixed at the center of the support frame (3), and the semi-submersible buoy (5) is fixed at the four corners of the support frame (3). The wind turbine generator body (1) can be installed on the wind turbine mounting platform (4). The stabilizing structure includes a V-shaped fixed frame (6) and a stabilizing float (7). The fixed frame (6) is fixed at both ends to the support frame (3). The free end of the fixed frame (6) is inclined upward. The stabilizing float (7) is fixed to the free end of the fixed frame (6). The cross section of the stabilizing float (7) is an inverted isosceles triangle.

2. The floating wind turbine towing attitude adaptive stabilization device according to claim 1, characterized in that: The edge between the two isosceles surfaces of the stable float (7) is a semi-circular arc edge, and the bottom surface of the float is parallel to the fixed frame (6).

3. The floating wind turbine towing attitude adaptive stabilization device according to claim 1, characterized in that: The semi-submersible buoy (5) is at least partially higher than the support frame (3), and each semi-submersible buoy (5) has a counterweight (8) fixed to its bottom.

4. The floating wind turbine towing attitude adaptive stabilization device according to claim 3, characterized in that: The counterweight (8) is fixed with a threaded post (9), which is threadedly connected to the semi-submersible buoy (5).

5. The floating wind turbine towing attitude adaptive stabilization device according to claim 1, characterized in that: The free end of the fixed frame (6) is fixed with two oppositely arranged connecting pieces (10), and the stable float (7) is bolted to the connecting pieces (10).

6. The floating wind turbine towing attitude adaptive stabilization device according to claim 1, characterized in that: Each of the semi-submersible buoys (5) has a chain link (11) fixed to its top. The two chain links (11) on the semi-submersible buoys (5) can be hooked together by a ship's tow hook.

7. The floating wind turbine towing attitude adaptive stabilization device according to claim 6, characterized in that: Each of the chain links (11) is provided with a chain post (12) at the bottom, and the chain post (12) is threadedly connected to the semi-submersible buoy (5).

8. The adaptive stabilization device for the towing attitude of a floating wind turbine according to claim 1, characterized in that: The semi-submersible buoy (5) is cylindrical.

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