Floating fan with auxiliary wind aligning function

Abstract

The utility model discloses a floating type fan with an auxiliary wind facing function, which comprises a floating type fan body and a movable sail, and the movable sail is movably mounted on the outer side wall of a tower of the floating type fan body and can swing or rotate around the tower to realize self-adaptive wind facing. The movable sail is installed on the tower, self-adaptive wind facing is achieved through aerodynamic force of the movable sail, then the whole fan is driven to conduct self-adaptive wind facing, the auxiliary wind facing effect is achieved, automatic wind facing of a yaw system of the fan can be assisted, the wind facing efficiency of the fan is improved, more efficient wind facing is achieved, and the service life of the fan is prolonged. And under the condition that the fan is powered off or no back-up power source exists, the fan can be driven to conduct self-adaptive wind facing.

Description

Technical Field

[0001] The utility model relates to the technical field of offshore wind power generation, in particular to a floating wind turbine with an auxiliary wind alignment function. Background Art

[0002] Whether it is an onshore wind turbine or an offshore wind turbine, the tower is generally fixed on the platform, and the yaw system adjusts and controls the rotation of the impeller to face the wind in a timely manner to ensure the best power generation efficiency and reduce fatigue loads and extreme loads. For onshore wind turbines or pile-supported offshore wind turbines, the tower is usually cylindrical, which can achieve the best structural load-bearing efficiency. For offshore floating wind turbines, the conventional yaw system cannot effectively align with the wind. Patents such as CN211874654U no longer adopt the circular cross-section design for the tower, but use an airfoil cross-section. By making the forces on the left and right sides of the tower unbalanced, a torque is generated to drive the airfoil tower to rotate until its forces are balanced, realizing automatic wind alignment. However, the disadvantage of this airfoil tower is that it is difficult to produce and has a high production cost. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art, and provide a floating wind turbine with an auxiliary wind alignment function. By installing a movable sail on the tower, its aerodynamic force is used to achieve self-adaptive wind alignment, and then drive the entire wind turbine to achieve self-adaptive wind alignment, playing an auxiliary role in wind alignment. At the same time, it can also assist the automatic wind alignment of the yaw system of the wind turbine itself, thereby accelerating the wind alignment efficiency of the wind turbine, with remarkable effects. And in the case of power failure of the wind turbine or without a backup power supply, it can also drive the wind turbine to achieve self-adaptive wind alignment alone.

[0004] To achieve the above purpose, the technical solution provided by the utility model is: a floating wind turbine with an auxiliary wind alignment function, including a floating wind turbine body, and also including a movable sail. Among them, the movable sail is movably installed on the outer side wall of the tower of the floating wind turbine body and can swing or rotate around the tower to achieve self-adaptive wind alignment.

[0005] Preferably, the movable sail can swing or rotate around the tower within a specified angle range, or can rotate 360° around the tower.

[0006] Preferably, it also includes a track. The track is installed on the foundation platform of the floating wind turbine body. The free end of the movable sail extending outward is installed on the track to enhance the stability of the movable sail during movement.

[0007] Preferably, the track is an arc-shaped track or a circular track.

[0008] Preferably, the radian of the arc-shaped track is equal to the specified angle range within which the movable sail can swing or rotate.

[0009] Preferably, the maximum height and width of the movable sail do not interfere with the blades of the floating wind turbine body, that is, the blade clearance is satisfied.

[0010] Preferably, the movable sail is a triangular sail, a rectangular sail, a T-shaped sail or a combined sail, and the combined sail includes a combination of at least two different shapes, and also includes regular or irregular geometric shapes.

[0011] Preferably, the movable sail is a corrosion-resistant and strong wind-resistant sail.

[0012] Preferably, there are multiple movable sails, but there is no interference between adjacent sails.

[0013] Preferably, it further includes a power source for controlling the direction of the movable sail.

[0014] Preferably, the tower is a tower with a circular cross-section.

[0015] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0016] 1. By combining the movable sail and the tower with a circular cross-section, the utility model can automatically or actively face the wind, reduce the load of the wind turbine while achieving higher wind energy utilization efficiency.

[0017] 2. The tower with a circular cross-section originally does not generate lift, but after being combined with the movable sail, it can generate lift at the same time, and can generate a greater wind torque than the airfoil tower.

[0018] 3. By installing the movable sail on the tower with a circular cross-section and using its aerodynamic force to achieve self-adaptive wind facing, the whole wind turbine is driven to achieve self-adaptive wind facing. At the same time of playing an auxiliary role in wind facing, it can also assist the automatic wind facing of the yaw system of the wind turbine itself, thereby accelerating the wind facing efficiency of the wind turbine and achieving more efficient wind facing, with remarkable effects.

[0019] 4. When the wind turbine is powered off or stopped and there is no backup power supply, the movable sail can drive the wind turbine to achieve self-adaptive wind facing, saving costs.

[0020] 5. The overall structure of the utility model is simple and reliable, and it is convenient to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is one of the structural schematic diagrams of the floating wind turbine with an auxiliary wind-facing function in Embodiment 1.

[0022] Figure 2 It is the second structural schematic diagram of the floating wind turbine with an auxiliary wind-facing function in Embodiment 1.

[0023] Figure 3 It is the third structural schematic diagram of the floating wind turbine with an auxiliary wind-facing function in Embodiment 1.

[0024] Figure 4 It is the fourth structural schematic diagram of the floating wind turbine with the auxiliary wind alignment function in Embodiment 1.

[0025] Figure 5 It is the structural schematic diagram of the floating wind turbine with the auxiliary wind alignment function in Embodiment 2.

[0026] Figure 6 It is the structural schematic diagram of the floating wind turbine with the auxiliary wind alignment function in Embodiment 3.

[0027] Figure 7 It is the structural schematic diagram of the floating wind turbine with the auxiliary wind alignment function in Embodiment 4. Detailed implementation manners

[0028] The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings, but the implementation manners of the present invention are not limited thereto.

[0029] Embodiment 1

[0030] As Figure 1 shown, this embodiment discloses a floating wind turbine with an auxiliary wind alignment function, including a nacelle 1, a hub 2, blades 3, a tower 4, stay cables 5, a movable sail 6 and a foundation platform. The blades 3 are installed on the hub 2 of the nacelle 1, the nacelle 1 is installed on the tower 4, the cross-section of the tower 4 is circular and is installed on the foundation platform. The foundation platform can float on the sea surface and is formed by connecting three floating bodies 7 and anchor chains 8. The tower 4 is connected and supported to the three floating bodies 7 through the stay cables 5, and part of the tower load can be borne through the stay cables 5. Among them, the movable sail 6 is a triangular sail, which is movably installed on the outer side wall of the tower 4 and can swing or rotate around the tower 4 within a certain angle range to achieve adaptive wind alignment.

[0031] Specifically, the movable sail 6 is not limited to a triangular sail, and can also be a rectangular sail, a T-shaped sail or other single sail forms of other shapes, and can also be a combined sail (including a combination of at least one shape, and also including regular or irregular geometric shapes), etc. Any sail form, see Figure 2 、 Figure 3 、 Figure 4 shown.

[0032] Specifically, the maximum height and maximum width of the movable sail 6 satisfy the blade clearance and can be any height and width that do not interfere with the blades 3.

[0033] Specifically, the materials used for the movable sail 6 are not limited to plastic plates, metal plates, rubber, various fabrics, etc., and can especially be film materials, such as PTFE or PVC film materials, etc.

[0034] When the wind flows through the tower 4 and passes the movable sail 6, since there is a certain angle between the movable sail 6 and the wind direction, a pressure difference is generated on both sides of the movable sail 6 and the tower 4, resulting in an unbalanced force on the entire floating wind turbine. At this time, a moment is generated to make the foundation platform rotate around the anchor chain 8 as a whole, so that the stress areas on both sides of the movable sail 6 and the tower 4 are balanced, realizing self-adaptive wind alignment, and then driving the entire wind turbine to achieve self-adaptive wind alignment. At the same time as playing an auxiliary role in wind alignment, it can also assist the automatic wind alignment of the yaw system of the wind turbine itself, thereby accelerating the wind alignment efficiency of the wind turbine and achieving more efficient wind alignment. In addition, when the wind turbine is powered off or stopped and there is no backup power supply, the movable sail 6 can also drive the wind turbine to achieve self-adaptive wind alignment.

[0035] Embodiment 2

[0036] As Figure 5 shown, different from Embodiment 1, this embodiment further includes a track 9, which is installed on the foundation platform, and the free end of the movable sail 6 extending outward is installed on this track 9 to enhance the smoothness of the movement of the movable sail 6.

[0037] Specifically, the track 9 is an arc-shaped track, and its radian is equal to the angular range within which the movable sail 6 can swing or rotate.

[0038] Embodiment 3

[0039] As Figure 6 shown, different from Embodiment 2, the track 9 in this embodiment is a circular track, so that the movable sail 6 can rotate 360° around the tower 4.

[0040] Embodiment 4

[0041] As Figure 7 shown, different from Embodiment 1, there are two movable sails 6 in this embodiment, but they do not interfere with each other. Of course, the number of movable sails 6 can also be increased according to actual needs, but it is required that adjacent sails do not interfere with each other.

[0042] Embodiment 5

[0043] Different from Embodiment 1, this embodiment further includes a power source (not shown in the figure), which can be a servo motor, a hydraulic cylinder, etc., and is used to control the direction of the movable sail 6 to achieve active wind alignment.

[0044] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A floating wind turbine with an auxiliary wind alignment function, comprising a floating wind turbine body, characterized in that, It further includes a movable sail (6), wherein the movable sail (6) is movably installed on the outer wall of the tower (4) of the floating wind turbine body and can swing or rotate around the tower (4) to achieve self-adaptive wind alignment.

2. The floating wind turbine with an auxiliary wind alignment function according to claim 1, characterized in that The movable sail (6) can swing or rotate around the tower (4) within a specified angle range, or can rotate 360° around the tower (4).

3. The floating wind turbine with an auxiliary wind alignment function according to claim 2, wherein It further includes a track (9), the track (9) is installed on the foundation platform of the floating wind turbine body, and the free end of the movable sail (6) extending outward is installed on the track (9) to enhance the smoothness of the movable sail (6) during movement.

4. A floating wind turbine with an auxiliary wind alignment function according to claim 3, characterized in that, The track (9) is an arc-shaped track or a circular track.

5. A floating wind turbine with an auxiliary wind alignment function according to claim 4, characterized in that, The radian of the arc-shaped track is equal to the specified angle range within which the movable sail (6) can swing or rotate.

6. A floating wind turbine with an auxiliary wind alignment function according to claim 5, characterized in that, The maximum height and width of the movable sail (6) do not interfere with the blades of the floating wind turbine body, that is, the blade clearance is satisfied.

7. A floating wind turbine with an auxiliary wind alignment function according to claim 6, characterized in that, The movable sail (6) is a triangular sail, a rectangular sail, a T-shaped sail or a combined sail. The combined sail includes at least one combination of shapes and also includes regular or irregular geometric shapes. The movable sail (6) is a corrosion-resistant and strong wind-resistant sail.

8. A floating wind turbine with an auxiliary wind alignment function according to claim 7, characterized in that, There are multiple movable sails (6), but there is no interference between adjacent sails.

9. A floating wind turbine with an auxiliary wind alignment function according to claim 7 or 8, characterized in that, It further includes a power source for controlling the direction of the movable sail (6).

10. A floating wind turbine with an auxiliary wind alignment function according to claim 7 or 8, characterized in that, The tower (4) is a tower with a circular cross-section.

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