Typhoon-resistant composite fan system

Abstract

The invention belongs to the field of offshore wind power, and discloses an anti-typhoon combined type fan system which comprises a foundation assembly, a tower drum arranged on the foundation assembly and a fan arranged on the tower drum, and the foundation assembly comprises a central ballast water tank and a plurality of corner ballast water tanks annularly distributed around the central ballast water tank. The central ballast water tank is connected with the corner ballast water tanks through trusses, the central ballast water tank is of a hollow structure, the tower drum is inserted into the central ballast water tank in a penetrating mode, a gap is formed between the tower drum and the central ballast water tank, the tower drum can move up and down and rotate horizontally relative to the central ballast water tank, and a tower drum ballast water tank is arranged on the tower drum. The ballast water tank is installed, the internal draft can be changed every time and every second, foundation deviation caused by wind speed and wave force is compensated, the draft depth and weight of the platform are increased when stormy waves are large, and good stability is kept.

Description

Technical Field

[0001] The present invention relates to the field of offshore wind power, and in particular to a typhoon-resistant composite wind turbine system. Background Art

[0002] As a new type of offshore wind power infrastructure, floating foundation can effectively improve the stability and safety of offshore wind turbines. It reduces the impact of wind and waves on the structure by semi-submerging underwater, while maintaining the stability of the position through the anchoring system. This structure is particularly suitable for wind power projects in deep water areas and can withstand stronger wind and wave impacts.

[0003] Typhoons, as a common extreme weather phenomenon, pose a huge threat to offshore wind power. The strong winds and huge waves brought by typhoons can cause serious damage to the structure of wind turbines, and even cause the collapse of the entire wind turbine. Therefore, how to design an offshore wind power foundation that can withstand typhoons has become a key technical challenge for the development of offshore wind power.

[0004] In response to this challenge, the present invention provides an effective solution to the design concept of the semi-submersible foundation. By optimizing the structural design of the semi-submersible foundation and improving its resistance to wind and waves, the stability and safety of offshore wind turbines in typhoons can be significantly enhanced. Summary of the invention

[0005] The object of the present invention is to provide a typhoon-resistant composite fan system to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A typhoon-resistant composite wind turbine system comprises a foundation assembly, a tower arranged on the foundation assembly and a wind turbine arranged on the tower. 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 by a truss. The central ballast water tank is a hollow structure. The tower is inserted into the central ballast water tank with a gap therebetween. The tower can move up and down and rotate horizontally relative to the central ballast water tank. A tower ballast water tank is arranged on the tower.

[0007] Furthermore, it also includes a fan flipping drive device arranged at the upper end of the tower, the fan is installed on the tower through the fan flipping drive device, and the fan flipping drive device drives the fan to flip, so that the fan switches between a vertical state and a horizontal state.

[0008] Furthermore, the fan flip drive device includes a fan mounting base, a fan flip drive motor and a gear box, the fan mounting base is arranged at the upper end of the tower, and the two ends of the fan are rotatably mounted on the fan mounting base through the fan shaft, the fan flip drive motor and the gear box are arranged in the fan mounting base, the fan flip drive motor, the gear box and the fan shaft on one side of the fan are connected in sequence, and the fan flip drive motor drives the fan to flip through the gear box.

[0009] Furthermore, it also includes a tower lifting and rotating device, which includes a plurality of lifting sliding seats, a plurality of rotating sliding seats and a plurality of cable automatic telescopic mechanisms. The lifting sliding seats, the rotating sliding seats and the cable automatic telescopic mechanisms are of the same number and have one-to-one corresponding positions. The plurality of lifting sliding seats are distributed on the tower, and the lifting sliding seats are connected to the tower for up and down sliding. The rotating sliding seat is connected to the central ballast water tank for sliding along a circular arc trajectory. The cable automatic telescopic mechanism is used to connect the lifting sliding seat and the rotating sliding seat. The circular arc trajectory is arranged along the hollow structure of the central ballast water tank so that the rotating sliding seat can move around the tower.

[0010] Furthermore, the tower lifting and rotating device also includes a circular guide rail corresponding to the circular arc trajectory, the circular guide rail is arranged on the central ballast water tank, and all the rotating sliding seats are slidably matched with the circular guide rail.

[0011] Furthermore, the tower lifting and rotating device also includes a rotating travel driving device, and the rotating travel driving device is arranged on a rotating sliding seat, and the rotating sliding seat moves along the circular guide rail through the rotating travel driving device.

[0012] Furthermore, the tower lifting and rotating device also includes a circular rack coaxial with the circular guide rail, and the circular rack is arranged on the central ballast water tank. The rotating travel drive device includes a rotating travel motor and a rotating travel gear. The rotating travel motor is arranged on the rotating sliding seat and connected to the rotating travel gear, and the rotating travel gear is meshed with the circular rack.

[0013] Furthermore, the tower lifting and rotating device also includes a plurality of lifting guide rails distributed around the tower, the lifting guide rails are laid on the tower along the vertical direction, and the lifting sliding seats slide up and down in a one-to-one correspondence with the lifting guide rails.

[0014] Furthermore, the tower lifting and rotating device also includes a lifting and traveling drive device, which is arranged on a lifting sliding seat, and the lifting sliding seat moves along the lifting guide rail through the lifting and traveling drive device; the tower lifting and rotating device also includes a lifting rack vertically arranged on the tower, and the lifting and traveling drive device includes a lifting and traveling motor and a lifting and traveling gear, the lifting and traveling motor is arranged on the lifting sliding seat and connected to the lifting and traveling gear, and the lifting and traveling gear is meshed with the lifting rack.

[0015] Furthermore, a damping plate is arranged at the bottom of the corner ballast water tank, and the tower ballast water tank is arranged at the lower end of the tower.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 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 deviation caused by wind speed and wave force. When the wind and waves are strong, the platform draft and weight are increased to maintain good stability; 2) The solution of using a traditional yaw system to drive a yaw device so that the wind turbine blades always face the wind direction is abandoned. 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 a semi-submersible foundation, so that the top of the tower is integrated and the stability is increased; 3) Add a fan flip drive device on the top of the tower. When a typhoon comes, the fan can rotate so that the blades are perpendicular to the sea level and upward. Then the ballast water tank is filled with water to sink the height of the column platform to the maximum. Compared with a typhoon 100 meters above sea level, the wind force at a dozen meters above sea level is greatly reduced, reducing safety hazards; 4) The use of a semi-submersible foundation not only reduces platform vibration, but also has the advantage of being installed at the dock. There is no need for an installation vessel to work in complex sea conditions, which greatly saves costs and provides a new solution for the future exploration of deep-sea offshore wind power. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention.

[0018] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0019] Figure 3 It is a schematic diagram of the connection structure between the fan and the fan turning drive device in the present invention.

[0020] Figure 4 It is a schematic diagram of the connection structure of the rotating sliding seat, the rotating travel driving device, the circular guide rail and the circular rack in the present invention.

[0021] Figure 5It is a schematic diagram of the connection structure of the lifting sliding seat, the lifting travel drive device, the lifting guide rail, and the lifting rack in the present invention.

[0022] In the figure: tower 1, fan 2, central ballast water tank 3, corner ballast water tank 4, truss 5, tower ballast water tank 6, fan flip drive device 7, fan mounting seat 700, fan flip drive motor 701, gear box 702, tower lifting and rotating device 8, lifting sliding seat 800, rotating sliding seat 801, cable automatic 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 DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-Figure 5 A typhoon-resistant composite wind turbine system includes a foundation component, a tower 1 arranged on the foundation component, and a wind turbine 2 arranged on the tower 1. The foundation component includes 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 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 therebetween. The tower 1 can move up and down and rotate horizontally relative to the central ballast water tank 3. A tower ballast water tank 6 is provided at the lower end of the tower 1, and a damping plate 9 is provided at the bottom of the corner ballast water tank 4.

[0025] 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 flipping drive device 7 disposed at the upper end of the tower 1, and the wind turbine 2 is installed on the tower 1 through the wind turbine flipping drive device 7. The wind turbine flipping drive device 7 drives the wind turbine 2 to flip, so that the wind turbine 2 switches between a vertical state and a horizontal state.

[0026] Continue reading Figure 3In one embodiment of the present invention, the fan flip drive device 7 includes a fan mounting seat 700, a fan flip drive motor 701 and a gear box 702. The fan mounting seat 700 is arranged at the upper end of the tower 1 and is a U-shaped structure. The two ends of the fan 2 are rotatably mounted on the fan mounting seat 700 through the fan shaft. The fan flip drive motor 701 and the gear box 702 are arranged in the fan mounting seat 700. The fan flip drive motor 701, the gear box 702 and the fan shaft on one side of the fan 2 are connected in sequence. The fan flip drive motor 701 drives the fan 2 to flip through the gear box 702. The gear box 702 is a well-known technology in the field of mechanical transmission. The gear box 702 of the present invention has two meshing bevel gears and a transmission shaft for installing the bevel gears, one of which is an input shaft connected to the fan flip drive motor 701, and the other is an output shaft connected to the fan shaft.

[0027] When the fan turning drive device 7 is working, the fan turning drive motor 701 drives the gear box 702 to work, and the gear box 702 drives the fan 2 to turn.

[0028] It should be noted that the flip drive is a well-known technology in the mechanical field, and the fan flip drive device 7 of the present invention can also be implemented by other structures.

[0029] Continue reading Figure 1 and Figure 2 In one embodiment of the present invention, the typhoon-resistant composite wind turbine system also includes a tower lifting and rotating device 8, which 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 lifting sliding seats 800, the rotating sliding seats 801 and the cable automatic telescopic mechanisms 802 are the same in number and have one-to-one corresponding positions. The plurality of lifting sliding seats 800 are arranged on the tower 1 in a ring, the lifting sliding seats 800 are connected to the tower 1 in an up-and-down sliding manner, the rotating sliding seats 801 are connected to the central ballast water tank 3 in an arc trajectory, the cable automatic telescopic mechanism 802 is used to connect the lifting sliding seats 800 and the rotating sliding seats 801, and the arc trajectory is arranged along the hollow structure of the central ballast water tank 3, so that the rotating sliding seats 801 can move around the tower 1.

[0030] The automatic cable retracting mechanism 802 may be an electric winch, etc. The main body of the electric winch is disposed on the lifting sliding seat 800 or the rotating sliding seat 801, and the cable of the electric winch is connected to the other.

[0031] Continue reading Figure 1 and Figure 2In one embodiment of the present invention, the tower lifting and rotating device 8 also includes a circular guide rail 803 corresponding to the arc trajectory and a plurality of lifting guide rails 807 distributed around the tower 1. The circular guide rail 803 is arranged 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 slidably matched with the circular guide rail 803. The lifting guide rail 807 is laid on the tower 1 in the vertical direction, and the lifting sliding seat 800 is slidably matched with the lifting guide rail 807 one by one.

[0032] 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 driving device, which is arranged on the rotating sliding seat 801, and the rotating sliding seat 801 moves along the circular guide rail 803 through the rotating travel driving device. The tower lifting and rotating device 8 further includes a circular rack 804 coaxial with the circular guide rail 803, and the circular rack 804 is laid on the circular guide rail 803. The rotating travel driving device includes a rotating travel motor 805 and a rotating travel gear 806. The rotating travel motor 805 is arranged in the rotating sliding seat 801 and connected to the rotating travel gear 806, and the rotating travel gear 806 is meshed with the circular rack 804.

[0033] When the rotating travel driving device is working, the rotating travel motor 805 drives the rotating travel gear 806 to rotate, so that the rotating travel gear 806 moves along the circular rack 804, thereby driving the entire rotating sliding seat 801 to rotate.

[0034] It should be noted that the realization of autonomous movement of the rotating sliding seat 801 on the circular guide rail 803 is a well-known technology in the mechanical field, and the rotating travel drive device and the circular rack 804 of the present invention can also be replaced by other structures.

[0035] 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 driving device, which is arranged on the lifting sliding seat 800, and the lifting sliding seat 800 moves along the lifting guide rail 807 through the lifting and traveling driving device. The tower lifting and rotating device 8 also includes a plurality of lifting racks 808 vertically laid on the lifting guide rail 807, and the lifting and traveling driving device includes a lifting and traveling motor 809 and a lifting and traveling gear 810, and the lifting and traveling motor 809 is arranged in the lifting sliding seat 800 and connected to the lifting and traveling gear 810, and the lifting and traveling gear 810 is meshed with the lifting rack 808.

[0036] When the lifting and traveling driving device is working, the lifting and traveling motor 809 drives the lifting and traveling gear 810 to rotate, so that the lifting and traveling gear 810 moves along the lifting rack 808, thereby driving the entire lifting sliding seat 800 to rise and fall.

[0037] It should be noted that the realization of the autonomous movement of the lifting sliding seat 800 on the lifting guide rail 807 is a well-known technology in the mechanical field, and the lifting travel drive device and the lifting rack 808 of the present invention can also be replaced by other structures.

[0038] The central ballast tank 3 and the corner ballast tank 4 both use built-in water pumps to absorb and drain water from the tanks. This is a well-known technology and will not be described in detail. When the wind and wave conditions are severe, the large central ballast tank 3 will take in water, thereby increasing the draft of the entire system, making the entire structure more stable. When the wind turbine 2 is working, the direction of the wind and waves changes, causing the platform to tilt in the direction of the wind. The role of the corner ballast tank 4 is to adjust the weight and buoyancy by changing the internal horizontal plane, thereby compensating for this error. In addition, the corner ballast tanks 4 are connected to the seabed by anchor cables.

[0039] The ballast water tank of the present invention drives the whole device to dive and rise by changing its own weight. The fan flip drive device 7 is another core device. The traditional cabin is controlled by the yaw system to make the cabin rotate around the vertical axis of the tower, so that the blades always face the wind direction. The present invention abandons this design. When a typhoon comes, the fan flip drive device 7 can make the cabin rotate around the horizontal axis, and finally make the cabin blades and the hub face vertically upward, such as Figure 1 shown.

[0040] The yaw system of the whole system is indispensable, but the yaw device of the present invention is changed from the traditional tower and the nacelle to the tower lifting and rotating device 8. When the yaw system works so that the system needs to face the wind direction, the rotating sliding seat 801 moves around the circular guide rail 803, and after reaching the specified position, the cable is tightened to drive the tower 1 to rotate. However, the whole tower 1 needs to float up and down, so there is a lifting sliding seat 800 at the end of the tower 1, which can move up and down through the built-in motor so that the cable is always level with the sea level.

[0041] The construction process of the present invention is as follows: The semi-submersible foundation is mainly composed of the central ballast water tank, truss, corner ballast water tank and damping plate; the column foundation is mainly composed of the tower ballast water tank, tower, fan tilting drive device and fan.

[0042] 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, the barge sinks and drives away, and the semi-submersible foundation floats and approaches the dock.

[0043] The column foundation is transported to the dock by a land transport vehicle. First, the tower ballast water tank, the tower and a series of components on it are installed at the dock. Then the tower ballast water tank is lifted by a crane and placed in the center of the semi-submersible foundation. The column foundation floats and the automatic cable retractable mechanism is installed.

[0044] After installation, the cable is straightened and the entire column foundation becomes stable. Then the crane begins to install the wind turbine flip drive device and the wind turbine in sequence. After the entire system is installed, it is towed by a tugboat. During the process, the ballast water tank is always kept in working condition to prevent the platform from capsizing during the towing process. When it arrives at the designated location, the tow cable is removed, and the anchoring system is installed on the semi-submersible foundation and the seabed. After a series of tests, the wind turbine starts to work.

[0045] It should be noted that all the electronic control components in the present invention are waterproofed by using known waterproof measures.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A typhoon-resistant composite wind turbine system, comprising a base assembly, a tower (1) arranged on the base assembly, and a wind turbine (2) arranged on the tower (1), characterized in that: The basic 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 tanks (4) are connected via 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 therebetween; the tower (1) can move up and down and rotate horizontally relative to the central ballast water tank (3); and a tower ballast water tank (6) is arranged on the tower (1).

2. The typhoon-resistant composite fan system according to claim 1, characterized in that: It also comprises a fan flipping drive device (7) arranged at the upper end of the tower (1), the fan (2) being mounted on the tower (1) via the fan flipping drive device (7), and the fan flipping drive device (7) driving the fan (2) to flip, so that the fan (2) switches between a vertical state and a horizontal state.

3. The typhoon-resistant composite fan system according to claim 2, characterized in that: The fan flip drive device (7) comprises a fan mounting seat (700), a fan flip drive motor (701) and a gear box (702); the fan mounting seat (700) is arranged at the upper end of the tower (1); both ends of the fan (2) are rotatably mounted on the fan mounting seat (700) via a fan rotating shaft; the fan flip drive motor (701) and the gear box (702) are arranged in the fan mounting seat (700); the fan flip drive motor (701), the gear box (702) and the fan rotating shaft on one side of the fan (2) are connected in sequence; and the fan flip drive motor (701) drives the fan (2) to flip via the gear box (702).

4. The typhoon-resistant composite fan system according to claim 1, characterized in that: The tower lifting and rotating device (8) further comprises a tower lifting and rotating device (8), the tower lifting and rotating device (8) comprising a plurality of lifting sliding seats (800), a plurality of rotating sliding seats (801) and a plurality of automatic cable telescopic mechanisms (802), the lifting sliding seats (800), the rotating sliding seats (801) and the automatic cable telescopic mechanisms (802) being of the same number and corresponding in position to each other, the plurality of lifting sliding seats (800) being arranged in a circle on the tower (1), the lifting sliding seats (800) being connected to the tower (1) by sliding up and down, the rotating sliding seats (801) being connected to the central ballast water tank (3) by sliding along an arc trajectory, the automatic cable telescopic mechanisms (802) being used to connect the lifting sliding seats (800) and the rotating sliding seats (801), the arc trajectory being arranged along the hollow structure of the central ballast water tank (3) so that the rotating sliding seats (801) can move around the tower (1).

5. The typhoon-resistant composite fan system according to claim 4, characterized in that: The tower lifting and rotating device (8) further comprises a circular guide rail (803) corresponding to the circular arc track, wherein the circular guide rail (803) is arranged on the central ballast water tank (3), and all the rotating sliding seats (801) are in sliding cooperation with the circular guide rail (803).

6. The typhoon-resistant composite fan system according to claim 5, characterized in that: The tower lifting and rotating device (8) further comprises a rotating travel driving device, wherein the rotating travel 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 travel driving device.

7. The typhoon-resistant composite fan system according to claim 6, characterized in that: The tower lifting and rotating device (8) further comprises a circular rack (804) coaxial with the circular guide rail (803), wherein the circular rack (804) is arranged on the central ballast water tank (3), and the rotating travel drive device comprises a rotating travel motor (805) and a rotating travel gear (806), wherein the rotating travel motor (805) is arranged on the rotating sliding seat (801) and connected to the rotating travel gear (806), and the rotating travel gear (806) is meshed with the circular rack (804).

8. The typhoon-resistant composite fan system according to claim 4, characterized in that: 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) are laid on the tower (1) in a vertical direction; and the lifting sliding seat (800) and the lifting guide rails (807) are slidably matched up and down in a one-to-one correspondence.

9. The typhoon-resistant composite fan system according to claim 8, characterized in that: The tower lifting and rotating device (8) further comprises a lifting and traveling driving device, wherein the lifting and traveling driving device is arranged on the lifting sliding seat (800), and the lifting sliding seat (800) moves along the lifting guide rail (807) through the lifting and traveling driving device; the tower lifting and rotating device (8) further comprises a lifting rack (808) vertically arranged on the tower (1), and the lifting and traveling driving device comprises a lifting and traveling motor (809) and a lifting and traveling gear (810), wherein the lifting and traveling motor (809) is arranged on the lifting sliding seat (800) and connected to the lifting and traveling gear (810), and the lifting and traveling gear (810) is meshed with the lifting rack (808).

10. The typhoon-resistant composite fan system according to claim 1, characterized in that: A damping plate (9) is provided at the bottom of the corner ballast water tank (4), and the tower ballast water tank (6) is provided at the lower end of the tower (1).

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