A composite fan system of typhoon resistance level

Abstract

The application belongs to the field of offshore wind power, and discloses a typhoon-resistant composite wind turbine system, which comprises a foundation assembly, a tower tube arranged on the foundation assembly, and a wind turbine arranged on the tower tube. The foundation assembly comprises a central ballast water tank and a plurality of corner ballast water tanks arranged around the central ballast water tank. The central ballast water tank and the corner ballast water tanks are connected through a truss. The central ballast water tank is a hollow structure. The tower tube is inserted into the central ballast water tank and has a gap therebetween. The tower tube can move up and down and rotate horizontally relative to the central ballast water tank. A tower tube ballast water tank is arranged on the tower tube. The ballast water tank can change the internal draught every second, compensates for the foundation deviation caused by the wind speed and wave force, increases the platform draught depth and weight when the wind and wave are large, and maintains good stability.

Description

Technical Field

[0001] This invention relates to the field of offshore wind power, specifically to a typhoon-resistant composite wind turbine system. Background Technology

[0002] Floating foundations, as a new type of offshore wind power foundation structure, can effectively improve the stability and safety of offshore wind turbines. By operating semi-submerged underwater, they reduce the impact of wind and waves on the structure, while maintaining positional stability through an anchoring system. This structure is particularly suitable for wind power projects in deep water areas, capable of withstanding stronger winds and wave impacts.

[0003] Typhoons, as a common extreme weather phenomenon, pose a significant threat to offshore wind power. The strong winds and giant waves carried by typhoons can severely damage the structure of wind turbines, even causing the entire turbine to collapse. Therefore, designing offshore wind turbine foundations that can withstand typhoon attacks has become a key technological challenge for the development of offshore wind power.

[0004] To address this challenge, this invention provides an effective solution to the design concept of semi-submersible foundations. By optimizing the structural design of semi-submersible foundations and improving their resistance to wind and waves, the stability and safety of offshore wind turbines during typhoons can be significantly enhanced. Summary of the Invention

[0005] The purpose of this invention is to provide a typhoon-resistant composite wind turbine system to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A typhoon-resistant composite wind turbine system includes a base component, a tower mounted on the base component, and a wind turbine mounted on the tower. The base component includes a central ballast water tank and several corner ballast water tanks arranged around the central ballast water tank. The central ballast water tank and the corner ballast water tanks are connected by a truss. The central ballast water tank has a hollow structure. The tower is inserted into the central ballast water tank with a gap between them. The tower can move up and down and rotate horizontally relative to the central ballast water tank. A tower ballast water tank is mounted on the tower.

[0008] Furthermore, it also includes a fan reversing drive device installed at the upper end of the tower. The fan is installed on the tower through the fan reversing drive device, which drives the fan to reverse, so that the fan switches between a vertical state and a horizontal state.

[0009] Furthermore, the wind turbine rotation drive device includes a wind turbine mounting base, a wind turbine rotation drive motor, and a gearbox. The wind turbine mounting base is located at the upper end of the tower. Both ends of the wind turbine are rotatably mounted on the wind turbine mounting base via wind turbine shafts. The wind turbine rotation drive motor and the gearbox are located inside the wind turbine mounting base. The wind turbine rotation drive motor, the gearbox, and the wind turbine shaft on one side of the wind turbine are connected in sequence. The wind turbine rotation drive motor drives the wind turbine to rotate through the gearbox.

[0010] Furthermore, it also includes a tower lifting and rotating device, which includes several lifting sliding seats, several rotating sliding seats, and several automatic cable telescopic mechanisms. The number of lifting sliding seats, rotating sliding seats, and automatic cable telescopic mechanisms are the same and their positions correspond one-to-one. Several lifting sliding seats are arranged around the tower and are slidably connected to the tower vertically. The rotating sliding seats are slidably connected to the central ballast water tank along an arc trajectory. The automatic cable telescopic mechanisms are used to connect the lifting sliding seats and the rotating sliding seats. The arc trajectory is set along the hollow structure of the central ballast water tank, so that the rotating sliding seats can move around the tower.

[0011] Furthermore, the tower lifting and rotating device also includes a circular guide rail corresponding to the arc trajectory. The circular guide rail is set on the central ballast water tank, and all rotating sliding seats are slidably engaged with the circular guide rail.

[0012] Furthermore, the tower lifting and rotating device also includes a rotating travel drive device, which is mounted on a rotating sliding seat, and the rotating sliding seat moves along a circular guide rail via the rotating travel drive device.

[0013] Furthermore, the tower lifting and rotating device also includes a circular rack coaxial with the circular guide rail, the circular rack being mounted on the central ballast water tank, and the rotating travel drive device including a rotating travel motor and a rotating travel gear, the rotating travel motor being mounted on a rotating sliding seat and connected to the rotating travel gear, the rotating travel gear meshing with the circular rack.

[0014] Furthermore, the tower lifting and rotating device also includes several lifting guide rails arranged around the tower. The lifting guide rails are laid vertically on the tower, and the lifting sliding seat slides up and down in correspondence with the lifting guide rails.

[0015] Furthermore, the tower lifting and rotating device also includes a lifting and traveling drive device, which is mounted on a lifting sliding seat and moves along the lifting guide rail via the lifting and traveling drive device; the tower lifting and rotating device also includes a lifting rack vertically mounted on the tower, and the lifting and traveling drive device includes a lifting and traveling motor and a lifting and traveling gear, which is mounted on the lifting sliding seat and connected to the lifting and traveling gear, and the lifting and traveling gear meshes with the lifting rack.

[0016] Furthermore, a damping plate is provided at the bottom of the corner ballast water tank, and the tower ballast water tank is located at the lower end of the tower.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1) The semi-submersible foundation is equipped with a ballast water tank, which can change the internal draft every second to compensate for the foundation displacement caused by wind speed and wave force. When the wind and waves are large, the platform's draft and weight can be increased to maintain good stability.

[0019] 2) The traditional yaw system drives the yaw device to keep the wind turbine blades always facing the wind direction. The traditional yaw device is installed between the tower and the nacelle, making the structure very fragile. The present invention installs the tower lifting and rotating device on the semi-submersible foundation, making the top of the tower integrated and increasing stability.

[0020] 3) Add a wind turbine rotation drive device to the top of the tower. When a typhoon comes, it can rotate so that the blades are perpendicular to the sea level and upward. Then the ballast tank will be filled with water to sink the column platform to the maximum extent. Compared with typhoons 100 meters above the sea level, the wind force at a dozen meters above the sea level is greatly reduced, reducing safety hazards.

[0021] 4) The use of a semi-submersible foundation reduces platform vibration and has the advantage of installation at the dock, eliminating the need for the installation vessel to operate in complex sea conditions, thus greatly saving costs and providing a new solution for the future exploration of offshore wind power in deep waters. Attached Figure Description

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

[0023] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0024] Figure 3 This is a schematic diagram of the connection structure between the fan and the fan rotation drive device in this invention.

[0025] Figure 4 This is a schematic diagram of the connection structure of the rotating sliding seat, rotating travel drive device, circular guide rail, and circular rack in this invention.

[0026] Figure 5 This is a schematic diagram of the connection structure of the lifting sliding seat, lifting and traveling drive device, lifting guide rail, and lifting rack in this invention.

[0027] In the diagram: 1. Tower; 2. Wind turbine; 3. Central ballast water tank; 4. Angle ballast water tank; 5. Truss; 6. Tower ballast water tank; 7. Wind turbine tilting drive device; 7. Wind turbine mounting base; 700. Wind turbine tilting drive motor; 701. Gearbox; 702. Tower lifting and rotating device; 8. Lifting sliding seat; 800. Rotating sliding seat; 801. Automatic cable telescopic mechanism; 802. Circular guide rail; 803. Circular rack; 804. Rotating travel motor; 805. Rotating travel gear; 806. Lifting guide rail; 807. Lifting rack; 808. Lifting travel motor; 809. Lifting travel gear; 810. Damping plate; 9. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figures 1-5 A typhoon-resistant composite wind turbine system includes a base component, a tower 1 mounted on the base component, and a wind turbine 2 mounted on the tower 1. The base component includes a central ballast water tank 3 and several corner ballast water tanks 4 arranged around the central ballast water tank 3. The central ballast water tank 3 and the corner ballast water tanks 4 are connected by a truss 5. The central ballast water tank 3 is a hollow structure. The tower 1 is inserted into the central ballast water tank 3 with a gap between them. The tower 1 can move up and down and rotate horizontally relative to the central ballast water tank 3. The lower end of the tower 1 has a tower ballast water tank 6, and the bottom of the corner ballast water tanks 4 is equipped with a damping plate 9.

[0030] Continue reading Figure 1 and Figure 3 In one embodiment of the present invention, the typhoon-resistant composite wind turbine system further includes a wind turbine rotation drive device 7 disposed on the upper end of the tower 1. The wind turbine 2 is installed on the tower 1 through the wind turbine rotation drive device 7. The wind turbine rotation drive device 7 drives the wind turbine 2 to rotate, so that the wind turbine 2 switches between a vertical state and a horizontal state.

[0031] Continue reading Figure 3In one embodiment of the present invention, the fan rotation drive device 7 includes a fan mounting base 700, a fan rotation drive motor 701, and a gearbox 702. The fan mounting base 700 is located at the upper end of the tower 1 and has a U-shaped structure. Both ends of the fan 2 are rotatably mounted on the fan mounting base 700 via fan shafts. The fan rotation drive motor 701 and the gearbox 702 are located inside the fan mounting base 700. The fan rotation drive motor 701, the gearbox 702, and the fan shaft on one side of the fan 2 are sequentially connected. The fan rotation drive motor 701 drives the fan 2 to rotate via the gearbox 702. The gearbox 702 is a known technology in the field of mechanical transmission. The gearbox 702 of the present invention has two meshing bevel gears and a drive shaft for mounting the bevel gears. One drive shaft is an input shaft connected to the fan rotation drive motor 701, and the other drive shaft is an output shaft connected to the fan shaft.

[0032] When the fan reversing drive device 7 is working, the fan reversing drive motor 701 drives the gearbox 702 to work, and the gearbox 702 drives the fan 2 to reverse.

[0033] It should be noted that the reversing drive is a well-known technology in the mechanical field, and the fan reversing drive device 7 of the present invention can also be implemented using other structures.

[0034] Continue reading Figure 1 and Figure 2 In one embodiment of the present invention, the typhoon-resistant composite wind turbine system further includes a tower lifting and rotating device 8. The tower lifting and rotating device 8 includes a plurality of lifting sliding seats 800, a plurality of rotating sliding seats 801, and a plurality of cable automatic telescopic mechanisms 802. The number of lifting sliding seats 800, rotating sliding seats 801, and cable automatic telescopic mechanisms 802 are the same and their positions correspond one-to-one. The plurality of lifting sliding seats 800 are arranged in a ring around the tower 1. The lifting sliding seats 800 are slidably connected to the tower 1 vertically. The rotating sliding seats 801 are slidably connected to the central ballast water tank 3 along an arc trajectory. The cable automatic telescopic mechanism 802 is used to connect the lifting sliding seats 800 and the rotating sliding seats 801. The arc trajectory is set along the hollow structure of the central ballast water tank 3, so that the rotating sliding seats 801 can move around the tower 1.

[0035] The automatic cable extension mechanism 802 can be an electric winch, etc. The main body of the electric winch is set on the lifting sliding seat 800 or the rotating sliding seat 801, and the cable of the electric winch is connected to the other.

[0036] Continue reading Figure 1 and Figure 2In one embodiment of the present invention, the tower lifting and rotating device 8 further includes a circular guide rail 803 corresponding to the arc trajectory and a plurality of lifting guide rails 807 arranged around the tower 1. The circular guide rail 803 is set on the central ballast water tank 3, and the tower 1 passes through the middle of the circular guide rail 803. All rotating sliding seats 801 are in sliding engagement with the circular guide rail 803. The lifting guide rails 807 are laid on the tower 1 in the vertical direction, and the lifting sliding seats 800 and the lifting guide rails 807 are in one-to-one sliding engagement with each other.

[0037] Continue reading Figure 1 , Figure 2 and Figure 4 In one embodiment of the present invention, the tower lifting and rotating device 8 further includes a rotating travel drive device, which is disposed on a rotating sliding seat 801. The rotating sliding seat 801 moves along a circular guide rail 803 via the rotating travel drive device. The tower lifting and rotating device 8 also includes a circular rack 804 coaxial with the circular guide rail 803. The circular rack 804 is laid on the circular guide rail 803. The rotating travel drive device includes a rotating travel motor 805 and a rotating travel gear 806. The rotating travel motor 805 is disposed in the rotating sliding seat 801 and connected to the rotating travel gear 806. The rotating travel gear 806 meshes with the circular rack 804.

[0038] When the rotating walking drive device is working, the rotating walking motor 805 drives the rotating walking gear 806 to rotate, so that the rotating walking gear 806 moves along the circular rack 804, thereby driving the entire rotating sliding seat 801 to rotate.

[0039] It should be noted that the autonomous movement of the rotating sliding seat 801 on the circular guide rail 803 is a well-known technology in the field of mechanics. The rotating walking drive device and the circular rack 804 of the present invention can also be replaced by other structures.

[0040] Continue reading Figure 1 , Figure 2 and Figure 5 In one embodiment of the present invention, the tower lifting and rotating device 8 further includes a lifting and traveling drive device, which is disposed on the lifting sliding seat 800. The lifting sliding seat 800 moves along the lifting guide rail 807 via the lifting and traveling drive device. The tower lifting and rotating device 8 also includes a plurality of lifting racks 808 vertically laid on the lifting guide rail 807. The lifting and traveling drive device includes a lifting and traveling motor 809 and a lifting and traveling gear 810. The lifting and traveling motor 809 is disposed in the lifting sliding seat 800 and connected to the lifting and traveling gear 810. The lifting and traveling gear 810 meshes with the lifting racks 808.

[0041] When the lifting and walking drive device is working, the lifting and walking motor 809 drives the lifting and walking gear 810 to rotate, so that the lifting and walking gear 810 moves along the lifting rack 808, thereby driving the entire lifting sliding seat 800 to rise and fall.

[0042] It should be noted that the autonomous movement of the lifting sliding seat 800 on the lifting guide rail 807 is a well-known technology in the mechanical field. The lifting and walking drive device and the lifting rack 808 of the present invention can also be replaced by other structures.

[0043] Both the central ballast tank 3 and the angle ballast tank 4 use built-in water pumps to draw in and drain water, which is well-known technology and will not be elaborated upon. In severe wind and wave conditions, the larger central ballast tank 3 will take in water, increasing the overall draft of the system and making the structure more stable. The angle ballast tank 4, on the other hand, compensates for the platform's tilt caused by changes in wind and wave direction when the wind turbine 2 is operating, by adjusting its internal level to regulate weight and buoyancy. Furthermore, both angle ballast tanks 4 are anchored to the seabed by mooring cables.

[0044] The ballast water tank of this invention uses its own weight to propel the entire device downwards and upwards. The wind turbine reversal drive device 7 is another core component. Traditional nacelles are controlled by a yaw system to rotate around the vertical axis of the tower, ensuring the blades always face the wind direction. This invention abandons this design; during typhoons, the wind turbine reversal drive device 7 allows the nacelle to rotate around a horizontal axis, ultimately aligning the nacelle, blades, and hub vertically upwards. Figure 1 As shown.

[0045] The yaw system is essential for the entire system, but the yaw device of this invention has been changed from the traditional tower and nacelle to a tower lifting and rotating device 8. When the yaw system is working and the system needs to face the wind, the rotating sliding seat 801 moves around the circular guide rail 803. After reaching the designated position, the cable tightens, driving the tower 1 to rotate. However, the entire tower 1 needs to rise and sink. Therefore, there is a lifting sliding seat 800 at the end of the connecting tower 1, which can move up and down through a built-in motor to keep the cable level with the sea level.

[0046] The construction process of this invention is as follows:

[0047] The semi-submersible foundation mainly consists of a central ballast water tank, truss, corner ballast water tanks, and damping plates, while the column foundation mainly consists of a tower ballast water tank, tower, wind turbine reversing drive device, and wind turbine.

[0048] The semi-submersible foundation is installed at a designated location on land, then lifted by a crane and placed on a barge. The semi-submersible foundation is transported to the dock by the barge, which then sinks and leaves, while the semi-submersible foundation floats up and approaches the dock.

[0049] The column foundation is transported to the dock by land transport vehicle. First, the tower ballast water tank and the tower and a series of components are installed at the dock. Then, the crane lifts and places the tower ballast water tank in the center of the semi-submersible foundation. The column foundation is then lifted and the automatic cable retraction mechanism is installed.

[0050] After installation, the cables were taut, stabilizing the entire column-type foundation. The crane then began installing the wind turbine tilting drive and the wind turbine itself. Once the entire system was installed, it was towed by a tugboat. During towing, the ballast tanks remained operational to prevent the platform from capsizing. Upon reaching the designated location, the tow cables were released, and the anchoring system was installed on the semi-submersible foundation and seabed. After a series of tests, the wind turbine began operation.

[0051] It should be noted that all electronic control components in this invention are waterproofed using well-known waterproofing methods.

[0052] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A typhoon-resistant combined type fan system comprising a base assembly, a tower (1) disposed on the base assembly, and a fan (2) disposed on the tower (1), characterized in that, The base assembly comprises a central ballast water tank (3) and a plurality of corner ballast water tanks (4) arranged around the central ballast water tank (3), the central ballast water tank (3) and the corner ballast water tank (4) are connected through a truss (5), the central ballast water tank (3) is a hollow structure, the tower drum (1) penetrates the central ballast water tank (3) and has a gap therebetween, the tower drum (1) can move up and down and rotate horizontally relative to the central ballast water tank (3), and a tower drum ballast water tank (6) is arranged on the tower drum (1); The wind turbine overturning driving device (7) is arranged at the upper end of the tower drum (1), the wind turbine overturning driving device (7) comprises a wind turbine mounting seat (700), a wind turbine overturning driving motor (701) and a gear box (702), the wind turbine mounting seat (700) is arranged at the upper end of the tower drum (1), the two ends of the wind turbine (2) are rotatably mounted on the wind turbine mounting seat (700) through a wind turbine rotating shaft, the wind turbine overturning driving motor (701) and the gear box (702) are arranged in the wind turbine mounting seat (700), the wind turbine overturning driving motor (701), the gear box (702) and the wind turbine rotating shaft on one side of the wind turbine (2) are sequentially connected, and the wind turbine overturning driving motor (701) drives the wind turbine (2) to overturn through the gear box (702); The tower drum lifting and rotating device (8) comprises a plurality of lifting sliding seats (800), a plurality of rotating sliding seats (801) and a plurality of cable automatic telescopic mechanisms (802), the number of the lifting sliding seats (800), the rotating sliding seats (801) and the cable automatic telescopic mechanisms (802) is the same, and the positions are one-to-one corresponding, the plurality of lifting sliding seats (800) are arranged around the tower drum (1), the lifting sliding seat (800) is slidably connected with the tower drum (1) in the up-down direction, the rotating sliding seat (801) is slidably connected to the central ballast water tank (3) in a circular arc track, the cable automatic telescopic mechanism (802) is used to connect the lifting sliding seat (800) and the rotating sliding seat (801), and the circular arc track is arranged along the hollow structure of the central ballast water tank (3), so that the rotating sliding seat (801) can move around the tower drum (1); The tower drum lifting and rotating device (8) further comprises a circular guide rail (803) corresponding to the circular arc track, the circular guide rail (803) is arranged on the central ballast water tank (3), and all the rotating sliding seats (801) are slidably matched with the circular guide rail (803); The tower drum lifting and rotating device (8) further comprises a rotating walking driving device, the rotating walking driving device is arranged on the rotating sliding seat (801), and the rotating sliding seat (801) moves along the circular guide rail (803) through the rotating walking driving device. The tower lifting and rotating device (8) further comprises a circular rack (804) coaxial with the circular guide rail (803), the circular rack (804) being arranged on the central ballast water tank (3), the rotating walking driving device comprising a rotating walking motor (805) and a rotating walking gear (806), the rotating walking motor (805) being arranged on the rotating sliding seat (801) and connected with the rotating walking gear (806), the rotating walking gear (806) being engaged with the circular rack (804).

2. A composite typhoon grade fan system according to claim 1, wherein, The fan (2) is installed on the tower (1) through the fan overturning driving device (7), the fan overturning driving device (7) drives the fan (2) to overturn, so that the fan (2) is switched between the vertical state and the horizontal state.

3. The anti-typhoon composite fan system according to claim 1, wherein, The tower lifting and rotating device (8) further comprises a plurality of lifting guide rails (807) arranged around the tower (1), the lifting guide rails (807) being laid on the tower (1) in the vertical direction, the lifting sliding seat (800) being slid up and down in one-to-one correspondence with the lifting guide rails (807).

4. The anti-typhoon composite fan system according to claim 3, wherein, The tower lifting and rotating device (8) further comprises a lifting walking driving device, the lifting walking driving device being arranged on the lifting sliding seat (800), the lifting sliding seat (800) moving along the lifting guide rails (807) through the lifting walking driving device; the tower lifting and rotating device (8) further comprises a lifting rack (808) arranged vertically on the tower (1), the lifting walking driving device comprising a lifting walking motor (809) and a lifting walking gear (810), the lifting walking motor (809) being arranged on the lifting sliding seat (800) and connected with the lifting walking gear (810), the lifting walking gear (810) being engaged with the lifting rack (808).

5. The anti-typhoon composite fan system according to claim 1, wherein, The corner ballast water tank (4) is provided with a damping plate (9) at the bottom, and the tower ballast water tank (6) is arranged at the lower end of the tower (1).

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