Fan with variable wind wheel face inclination angle and inclination angle testing and verifying method

Abstract

The invention provides a fan with a variable wind wheel face dip angle and a dip angle test verification method.The fan with the variable wind wheel face dip angle comprises a cabin, a tower drum, a wind wheel and a rotating assembly, the cabin is installed on the tower drum, the rotating assembly is installed in the cabin, the wind wheel is connected with the rotating assembly, and the wind wheel is connected with the tower drum. The rotating assembly drives the wind wheel to adjust the inclination angle along the cabin. The inclination angle of the wind wheel face can be adjusted based on the inclination angle of the sensor side under the dynamic condition so as to verify the influence of different wind incidence angles on the generating capacity of a unit, and meanwhile the generating efficiency of floating wind power equipment can be effectively improved by adjusting the inclination angle of the wind wheel face.

Description

Technical Field

[0001] The present invention relates to the field of floating wind power equipment, and in particular to a wind turbine with a variable wind wheel surface inclination angle and an inclination angle testing and verification method. Background Art

[0002] In existing technologies, floating wind turbine platforms are typically deployed in deep waters, where environmental conditions are more severe than nearshore. Due to faster currents and higher wave heights, floating wind turbines experience significantly increased wave and flow loads, accompanied by swaying motion. This significantly reduces the efficiency of wind turbines.

[0003] Therefore, this application requires the design of a wind turbine for testing the effect of the inclination angle on the power generation, while increasing the power generation efficiency of the wind turbine.

[0004] In view of this, the inventors of the present application have designed a wind turbine with a variable wind wheel surface inclination angle and an inclination angle testing and verification method in order to overcome the above technical problems. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defect in the prior art that wind turbines will significantly reduce the power generation efficiency in deep sea environments, and to provide a wind turbine with a variable wind rotor surface inclination angle and an inclination angle testing and verification method.

[0006] The present invention solves the above technical problems through the following technical solutions:

[0007] A wind turbine with a variable wind wheel face inclination angle is characterized in that the wind turbine with a variable wind wheel face inclination angle includes a nacelle, a tower, a wind wheel and a rotating assembly, the nacelle is installed on the tower, the rotating assembly is installed in the nacelle, the wind wheel is connected to the rotating assembly, and the wind wheel is driven by the rotating assembly to adjust the inclination angle along the nacelle.

[0008] According to one embodiment of the present invention, the rotating assembly includes a movable platform and a main shaft, one end of the movable platform is rotatably connected to the bottom plate of the cabin, and the other end of the movable platform is connected to the bottom plate of the cabin through a driving member, and the movable platform is driven by the driving member to adjust the inclination angle, and the wind wheel is connected to the movable platform through the main shaft.

[0009] According to one embodiment of the present invention, the rotating assembly further includes a generator and a gearbox, which are mounted on the movable platform. One end of the main shaft is connected to the generator and the gear, and the other end is connected to the wind wheel.

[0010] According to one embodiment of the present invention, a main bearing is installed on the movable platform, and the main shaft is installed on the main bearing.

[0011] According to one embodiment of the present invention, the driving member is a hydraulic rod.

[0012] According to one embodiment of the present invention, the cabin is a hollow cavity, a variable inclination hole is provided on the cavity, and the main shaft extends outward from the variable inclination hole.

[0013] According to one embodiment of the present invention, the calculation formula for the size of the variable-angle hole is:

[0014] tanθ×L=H

[0015] Wherein, θ is the tilt angle of the movable table, L is the length of the movable table, and H is the size of the variable tilt hole.

[0016] The present invention also provides an inclination angle test and verification method, which is characterized in that the inclination angle test and verification method uses a wind turbine with a variable wind wheel surface inclination angle as described above, and the inclination angle test and verification method includes: when the wind speed is relatively stable, adjusting the angle of the movable platform from 0 degrees to between -5 degrees and 5 degrees, and finding the angle with the highest power generation.

[0017] According to one embodiment of the present invention, the tilt angle test verification method further includes: repeating the test at different wind speeds to determine whether the angle selection is correct, and confirming whether the angle is related to the wind speed.

[0018] According to one embodiment of the present invention, the tilt angle test verification method further includes: adjusting the control logic of the controller according to the test results, and adjusting to the corresponding angle through the movable platform when the fixed floating body is tilted by the wind or the floating body has a moving angle.

[0019] The positive progress effect of the present invention is:

[0020] The wind turbine with variable rotor surface inclination angle and the inclination test verification method of the present invention can adjust the inclination angle of the rotor surface based on the inclination angle of the sensor side under dynamic conditions to verify the influence of different wind incident angles on the power generation of the unit. At the same time, the power generation efficiency of the floating wind power equipment can be effectively improved by adjusting the inclination angle of the rotor surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and other features, properties and advantages of the present invention will become more apparent through the following description in conjunction with the accompanying drawings and embodiments, in which like reference numerals represent like features throughout, wherein:

[0022] Figure 1 It is a three-dimensional diagram of a wind turbine with variable wind wheel surface inclination angle according to the present invention.

[0023] Figure 2 This is a partially enlarged view of the wind turbine with variable wind wheel surface inclination angle of the present invention.

[0024] Figure 3 This is a schematic structural diagram of a wind turbine with a variable wind wheel surface inclination angle according to the present invention.

[0025] Figure 4 for Figure 3 Enlarged view of part A.

[0026] Reference numerals

[0027] Cabin 10

[0028] Tower 20

[0029] Wind wheel 30

[0030] Activity table 40

[0031] Spindle 50

[0032] Driving member 60

[0033] Main bearing 41

[0034] Bottom plate 11

[0035] Variable inclination hole 12

[0036] Generator and gearbox 70 DETAILED DESCRIPTION

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0038] Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Reference will now be made in detail to preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numerals will be used throughout the drawings to represent the same or similar parts.

[0039] Furthermore, although the terms used in the present invention are selected from well-known and commonly used terms, some terms mentioned in the present specification may be selected by the applicant at his or her discretion, and their detailed meanings are explained in the relevant parts of the description herein.

[0040] Furthermore, it is required that the present invention be understood not only by the actual terms used but also by the meanings connoted by each term.

[0041] like Figures 1 to 4 As shown, the present invention discloses a wind turbine with variable rotor pitch angle, which includes a nacelle 10, a tower 20, a rotor 30, and a rotating assembly. The nacelle 10 is mounted on the tower 20, the rotating assembly is mounted within the nacelle 10, and the rotor 30 is connected to the rotating assembly, which drives the rotor 30 to adjust its pitch angle along the nacelle 10.

[0042] Preferably, the rotating assembly in this embodiment includes a movable platform 40 and a main shaft 50. One end of the movable platform 40 is rotatably connected to the bottom plate 11 of the nacelle 10. The other end of the movable platform 40 is connected to the bottom plate 11 of the nacelle 10 via a driving member 60. The driving member 60 drives the movable platform 40 to adjust the inclination angle. The wind wheel 30 is connected to the movable platform 40 via the main shaft 50. The driving member 60 here is preferably a hydraulic rod.

[0043] Furthermore, the rotating assembly also includes a generator and a gearbox 70 , which are mounted on the movable platform 40 , one end of the main shaft 50 is connected to the generator and gearbox 70 , and the other end is connected to the wind wheel 30 .

[0044] A main bearing 41 is mounted on the movable table 40 , and a main shaft 50 is mounted on the main bearing 41 .

[0045] In this embodiment, the nacelle 10 is preferably a hollow cavity with a variable inclination hole 12 defined therein. The main shaft 50 extends outward from the variable inclination hole 12 and is connected to the wind wheel 30 .

[0046] In this embodiment, the inclination angle of the platform in the cabin is mainly changed by hydraulic rods and a movable platform. The variable inclination hole 12 provides a range of change for the main shaft 50, which should generally be around 5 degrees. The size of the inclination hole needs to be calculated based on the length of the cabin. The size calculation formula of the variable inclination hole 12 is:

[0047] tanθ×L=H

[0048] Wherein, θ is the tilt angle of the movable table, L is the length of the movable table, and H is the size of the variable tilt hole.

[0049] During wind turbine operation, the inclination angle of the platform inside the nacelle can be changed by hydraulic levers during periods of stable wind speed, thereby testing the effects of different inclination angles on power generation and thrust. Simultaneously, the inclination angle of the floating structure itself is monitored. Based on the test results, an optimal mathematical relationship between the floating structure's inclination angle and the power generation from the rotor surface inclination is established. The optimal angle, based on the monitoring data, is then selected as the optimal inclination angle for that wind speed.

[0050] The present invention also provides an inclination angle test verification method, which uses a wind turbine with a variable wind wheel surface inclination angle as described above. The inclination angle test verification method includes: when the wind speed is relatively stable, adjusting the angle of the movable platform from 0 degrees to between -5 degrees and 5 degrees, and finding the angle with the highest power generation.

[0051] Preferably, the tilt angle test verification method further comprises: repeating the test at different wind speeds to determine whether the angle selection is correct, and confirming whether the angle is related to the wind speed.

[0052] Furthermore, the tilt angle test verification method further includes: adjusting the control logic of the controller according to the test results, and adjusting to the corresponding angle through the movable platform when the fixed floating body has a tilt angle due to wind or the floating floating body has a motion angle.

[0053] According to the description of the above structure and method, the wind turbine with variable wind wheel surface inclination angle and the inclination angle test verification method of the present invention can be applied to fixed wind turbines or dual-wheel wind turbines, and the hydraulic transmission mode can also be changed to motor or magnetic induction mode.

[0054] In the variable rotor pitch wind turbine of this invention, the floating wind turbine exhibits six degrees of freedom, particularly pitch motion, which can cause changes in the wind's incident angle. Simulation studies have shown that a pitch of 1-5 degrees can affect power generation by 1%-2%. For current 20-26MW turbines, this has a significant impact on power generation over their lifetime.

[0055] The inclination test verification method described in the present invention can not only test the impact of inclination changes during wind turbine operation on power generation through variable inclination holes during the test phase, but also select the optimal inclination under different working conditions according to the test results in subsequent operation, thereby improving power generation.

[0056] In summary, the wind turbine with variable rotor surface inclination angle and the inclination test verification method of the present invention can adjust the inclination angle of the rotor surface based on the inclination angle of the sensor side under dynamic conditions to verify the influence of different wind incident angles on the power generation of the unit. At the same time, the power generation efficiency of the floating wind power equipment can be effectively improved by adjusting the inclination angle of the rotor surface.

[0057] For those skilled in the art, the above invention disclosure is intended only as an example and does not constitute a limitation of this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and amendments to this application. Such modifications, improvements, and amendments are suggested in this application and remain within the spirit and scope of the exemplary embodiments of this application.

[0058] At the same time, this application uses specific terms to describe the embodiments of this application. For example, "one embodiment," "an embodiment," and / or "some embodiments" refer to a certain feature, structure, or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that "one embodiment," "an embodiment," or "an alternative embodiment" mentioned twice or multiple times in different locations in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application may be appropriately combined.

[0059] Similarly, it should be noted that in order to simplify the description disclosed in this application and thus help understand one or more embodiments of the invention, in the foregoing description of the embodiments of this application, multiple features are sometimes combined into one embodiment, drawing or description thereof. However, this disclosure method does not mean that the subject matter of this application requires more features than the features mentioned in the claims. In fact, the features of the embodiment are less than all the features of the single embodiment disclosed above. In some embodiments, numbers are used to describe the number of components and attributes. It should be understood that such numbers used in the description of the embodiments are modified in some examples using the modifiers "approximately", "approximately" or "substantially".

[0060] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of the present invention.

Claims

1. A wind turbine with a variable wind wheel inclination angle, characterized in that: The wind turbine with variable wind wheel surface inclination angle includes a nacelle, a tower, a wind wheel and a rotating assembly. The nacelle is installed on the tower, the rotating assembly is installed in the nacelle, the wind wheel is connected to the rotating assembly, and the wind wheel is driven by the rotating assembly to adjust the inclination angle along the nacelle.

2. The wind turbine with variable rotor inclination angle according to claim 1, characterized in that: The rotating assembly includes a movable platform and a main shaft. One end of the movable platform is rotatably connected to the bottom plate of the cabin, and the other end of the movable platform is connected to the bottom plate of the cabin through a driving member. The movable platform is driven by the driving member to adjust the inclination angle, and the wind wheel is connected to the movable platform through the main shaft.

3. The wind turbine with variable wind wheel inclination angle according to claim 2, characterized in that: The rotating assembly also includes a generator and a gear box, and the generator and the gear box are mounted on the movable platform. One end of the main shaft is connected to the generator and the gear, and the other end is connected to the wind wheel.

4. The wind turbine with variable wind wheel inclination angle according to claim 3, characterized in that: A main bearing is installed on the movable platform, and the main shaft is installed on the main bearing.

5. The wind turbine with variable wind wheel inclination angle according to claim 2, characterized in that: The driving member is a hydraulic rod.

6. The wind turbine with variable rotor pitch angle according to claim 2, characterized in that: The cabin is a hollow cavity, a variable inclination hole is provided on the cavity, and the main shaft extends outward from the variable inclination hole.

7. The wind turbine with variable rotor pitch angle according to claim 6, characterized in that: The calculation formula for the size of the variable inclination hole is: tanθ×L=H Wherein, θ is the inclination angle of the movable table, L is the length of the movable table, and H is the size of the variable inclination hole.

8. A tilt angle test verification method, characterized in that: The inclination angle test verification method adopts a wind turbine with a variable wind wheel face inclination angle as described in any one of claims 1-7, and the inclination angle test verification method includes: when the wind speed is relatively stable, adjusting the angle of the movable platform from 0 degrees to between -5 degrees and 5 degrees, and finding the angle with the highest power generation.

9. The inclination test verification method according to claim 8, characterized in that: The inclination angle test verification method also includes: repeating the test at different wind speeds to determine whether the angle selection is correct and confirming whether the angle is related to the wind speed.

10. The inclination test verification method according to claim 8, characterized in that: The inclination test verification method also includes: adjusting the control logic of the controller according to the test result, and adjusting to the corresponding angle through the movable platform when the fixed floating body has an inclination angle due to wind or the floating floating body has a movement angle.

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