A wind speed and direction monitoring device for a wind turbine generator set

Abstract

The present invention discloses a self-powered wind speed and direction monitoring device for a wind turbine generator set with an overload protection function. The wind speed and direction monitoring device for the wind turbine generator set includes a mounting base, a turntable, an air duct, an impeller, a wind shield, a first driving member, a signal acquisition module and a battery. When the voltage signal of the signal acquisition module exceeds a preset value, the wind shield blocks the air inlet of the air duct to reduce the air intake of the air inlet of the air duct, thereby avoiding the risk of the impeller malfunctioning due to excessive rotation speed, and protecting the wind speed and direction monitoring device for the wind turbine generator set; the signal acquisition module also includes a first electrode and a second electrode, the first electrode is covered with a first dielectric layer, and the second electrode is covered with a second dielectric layer. The voltage generated by the sliding friction between the first dielectric layer and the second dielectric layer charges the battery, and the battery can be used to self-power the wind speed and direction monitoring device for the wind turbine generator set, thereby reducing the cost of use.

Description

Technical Field

[0001] The present invention relates to the technical field of wind speed and direction monitoring, and in particular to a wind speed and direction monitoring device for a wind turbine generator set. Background Art

[0002] With the development of the wind power industry, wind turbines are becoming increasingly larger and more cost-effective, and the requirements for wind turbines are also increasing. Safe, reliable, and accurate wind energy collection is currently a hot topic of research. To achieve this, accurate wind speed and direction measurement is required to ensure optimal startup and shutdown of wind turbines. Currently, wind speed sensors are primarily used in projects, but they suffer from limited functionality and high costs. Furthermore, safety monitoring of wind turbines during power generation is a key issue. Currently, manual inspections are the primary method used in projects, which also pose safety risks and are extremely inconvenient. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, an embodiment of the present invention provides a wind speed and direction monitoring device for a wind turbine generator system that has multiple functions, low cost, and convenient monitoring.

[0004] The wind speed and direction monitoring device for a wind turbine generator set according to an embodiment of the present invention is characterized in that it includes a mounting base, a turntable, an air duct, an impeller, a wind shield, a first driving member, and a signal acquisition module control system, wherein the turntable is rotatably connected to the mounting base, the air duct is provided on the turntable, the impeller is provided in the air duct, the wind shield is movably connected to the turntable, the wind shield is used to block at least a portion of the air inlet of the air duct, the first driving member is provided on the turntable and is drivably connected to the wind shield so as to drive the wind shield to move, and the signal acquisition module is used to convert the speed signal of the impeller into a voltage signal;

[0005] The control system is connected to the signal acquisition module to receive the voltage signal collected by the signal acquisition module. The control system is connected to the first driving member. When the voltage signal received by the control system exceeds a preset value, the control system controls the first driving member to drive the windshield to move.

[0006] In some embodiments, the wind speed and direction monitoring device of the wind turbine generator set of the embodiment of the present invention also includes a wind vane and an angle measuring instrument, wherein the wind vane is arranged on the turntable, and the direction of the wind vane is the same as the direction of the air inlet of the air duct; the angle measuring instrument is arranged on the turntable to measure the angle of the turntable.

[0007] In some embodiments, the wind vane includes a needle, a pole, and a V-shaped plate connected in sequence, the opening of the V-shaped plate is arranged to face away from the needle, the V-shaped plate includes a first wing plate and a second wing plate, the first wing plate and the second wing plate are both rotatably connected to the pole, the first wing plate and the second wing plate can move relative to each other under the action of wind to change the angle of the V-shaped plate, the first wing plate is provided with a first conductor, the second wing plate is provided with a second conductor opposite to the first conductor, the first conductor and the second conductor are respectively connected to the control system, when the angle of the V-shaped plate is less than a preset angle, the first conductor contacts the second conductor, and the control system controls the first driving member to drive the windshield to move;

[0008] The wind speed and direction monitoring device for a wind turbine generator set further includes a reset spring, which is located in the V-shaped plate and has two ends connected to the first wing plate and the second wing plate respectively.

[0009] In some embodiments, the wind speed and direction monitoring device of a wind turbine generator set according to an embodiment of the present invention further includes an impeller frame, the impeller frame being located in the air duct and connected to the air duct, the impeller frame having a support portion, the signal acquisition module including a plurality of first electrodes and a plurality of second electrodes, the plurality of first electrodes being arranged on the support portion at intervals along the circumference of the air duct, each of the first electrodes being covered with a first dielectric layer, the impeller having a plurality of blades, the plurality of blades corresponding one-to-one to the plurality of second electrodes, the second electrodes being arranged on the corresponding blades and arranged on the end face of the first electrode in the axial direction of the air duct, each of the second electrodes being covered with a second dielectric layer, the first dielectric layer and the second dielectric layer being formed of two dielectric materials with different electron gain and loss capabilities and being arranged opposite to each other in the axial direction of the air duct, and when the impeller rotates, intermittent sliding friction is generated between the first dielectric layer and the second dielectric layer.

[0010] In some embodiments, the second electrode includes a fixed portion and an overhanging portion, the fixed portion is connected to the blade, the overhanging portion is overhanging in a direction toward the first electrode, and the second dielectric layer is provided on the overhanging portion.

[0011] In some embodiments, the first electrode and the second electrode are electrically connected to the control system respectively, so that the control system obtains the voltage between the first electrode and the second electrode.

[0012] In some embodiments, the wind speed and direction monitoring device of the wind turbine of the embodiment of the present invention further includes a camera, which is arranged on the turntable, and the control system is connected to the camera to control the camera, and the camera is used to monitor the cabin of the wind turbine.

[0013] In some embodiments, the wind speed and direction monitoring device of a wind turbine generator set according to an embodiment of the present invention further includes a protective cover and a second driving member, wherein the protective cover is movably covered on the camera, the second driving member is connected to the protective cover, and the second driving member is used to drive the protective cover to move, and the control system is connected to the second driving member so as to control the protective cover to take pictures.

[0014] In some embodiments, the wind speed and direction monitoring device of a wind turbine according to an embodiment of the present invention further includes a battery, which is arranged on the turntable. The battery is suitable for being electrically connected to the first electrode and the second electrode so that the voltage generated between the first electrode and the second electrode charges the battery. The battery is electrically connected to the first driving member, the second driving member, the camera and the control system respectively.

[0015] In some embodiments, the air duct is in a frustum shape, and the cross section of the air duct gradually decreases from the air inlet of the air duct to the air outlet of the air duct.

[0016] During use, the wind speed and direction monitoring device for a wind turbine set according to an embodiment of the present invention aligns the air inlet of the air duct with the wind direction. When the voltage signal of the signal acquisition module exceeds the preset value, it indicates that the rotational speed of the impeller also exceeds the rated rotational speed, that is, the wind speed exceeds the wind speed that the impeller can withstand for safe operation. At this time, the control system will control the first drive member to drive the wind shield to move, so that the wind shield blocks at least a portion of the air inlet of the air duct to reduce the amount of air entering the air inlet of the air duct, thereby avoiding the risk of the impeller malfunctioning due to the excessive rotational speed, and plays a protective role for the wind speed and direction monitoring device for the wind turbine set; in addition, it is also beneficial to reduce the maintenance cost of the wind speed and direction monitoring device for the wind turbine set, and the cost of use is relatively low. Therefore, the wind speed and direction monitoring device for a wind turbine set according to an embodiment of the present invention not only has the function of detecting wind speed, but also has an overload protection function, with more functions and lower cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a wind speed and direction monitoring device for a wind turbine generator system according to an embodiment of the present invention.

[0018] Figure 2 yes Figure 1 Enlarged view of part A.

[0019] Figure 3 yes Figure 1 Magnified view of part B.

[0020] Figure 4 yes Figure 1 Magnified view of part C.

[0021] Figure 5 yes Figure 4 Cross-sectional view of the BB.

[0022] Figure 6 yes Figure 6 Cross-sectional view of CC.

[0023] Figure 7 It is a top view of a pole of a wind speed and direction monitoring device for a wind turbine generator system according to an embodiment of the present invention.

[0024] Figure 8 1 is a first state diagram of the friction between the first dielectric layer and the second dielectric layer.

[0025] Figure 9 2 is a second state diagram of the friction between the first dielectric layer and the second dielectric layer.

[0026] Figure 10 FIG. 4 is a third state diagram of the friction between the first dielectric layer and the second dielectric layer.

[0027] Figure 11 FIG4 is a fourth state diagram of the friction between the first dielectric layer and the second dielectric layer.

[0028] Reference numerals:

[0029] Wind turbine wind speed and direction monitoring device 100;

[0030] Mounting seat 1;

[0031] Turntable 2;

[0032] Air duct 3;

[0033] Impeller 4; blade 401;

[0034] Shell 5;

[0035] Impeller frame 6; support portion 601;

[0036] Wind deflector 7;

[0037] A first driving member 8;

[0038] Signal acquisition module 9; first electrode 901; second electrode 902; first dielectric layer 905; second dielectric layer 906;

[0039] Control system 10;

[0040] Wind vane 11; needle 1101; rod 1102; V-shaped plate 1103; first wing plate 11031; second wing plate 11032; first conductor 1104; second conductor 1105; return spring 1106;

[0041] Angle measuring instrument 12;

[0042] Camera 13;

[0043] Protective cover 14;

[0044] A second driving member 15;

[0045] Battery 16;

[0046] First gear 17;

[0047] First rack 18;

[0048] Second gear 19;

[0049] Second rack 20 . DETAILED DESCRIPTION

[0050] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0051] The technical solution of the present application is described in detail below with reference to the accompanying drawings.

[0052] like Figures 1 to 11 As shown, the wind speed and direction monitoring device 100 of a wind turbine generator system according to an embodiment of the present invention includes a mounting base 1, a turntable 2, an air duct 3, an impeller 4, a wind shield 7, a first driving member 8, a signal acquisition module 9, and a control system 10. The turntable 2 is rotatably connected to the mounting base 1, the air duct 3 is arranged on the turntable 2, the impeller 4 is arranged in the air duct 3, the wind shield 7 is movably connected to the turntable 2, and the wind shield 7 is used to block the air inlet of at least a portion of the air duct 3. The first driving member 8 is arranged on the turntable 2 and is drivably connected to the wind shield 7 so as to drive the wind shield 7 to move. The signal acquisition module 9 is used to convert the speed signal of the impeller 4 into a voltage signal. The control system 10 is connected to the signal acquisition module 9 to receive the voltage signal generated by the signal acquisition module 9. The control system 10 is connected to the first driving member 8. When the voltage signal received by the control system 10 exceeds a preset value, the control system 10 controls the first driving member 8 to drive the wind shield 7 to move.

[0053] The windshield 7 is used to block at least a portion of the air inlet of the air duct 3. It can be understood that the windshield 7 can block a portion of the air inlet of the air duct 3, or can block the entire air inlet of the windshield 7.

[0054] For example, Figure 1 and Figure 4 As shown, the control system 10 is a PLC, the mounting base 1 is used to be installed on the nacelle of the wind turbine generator set, the turntable 2 is rotatably connected to the mounting base 1 along a first axis extending in the vertical direction, the air duct 3 is extended in the horizontal direction, and the impeller 4 is rotatably connected to the inner wall of the air duct 3 through the impeller frame 6.

[0055] It can be understood by those skilled in the art that the wind entering the air inlet of the air duct 3 drives the impeller 4 to rotate, and there is a certain linear relationship between the wind speed and the rotational speed of the impeller 4, based on which the wind speed can be inferred. The signal acquisition module 9 converts the rotational speed signal of the impeller 4 into a voltage signal, and there is a certain linear relationship between the voltage signal and the rotational speed signal of the impeller 4, based on which the rotational speed can be inferred.

[0056] During use of the wind turbine wind speed and direction monitoring device 100 according to the embodiment of the present invention, the air inlet of the air duct 3 is aligned with the wind direction. When the voltage signal of the signal acquisition module 9 exceeds the preset value, it indicates that the rotation speed of the impeller 4 also exceeds the rated rotation speed, that is, the wind speed exceeds the wind speed that the impeller 4 can withstand for safe operation. At this time, the control system 10 will control the first driving member 8 to drive the wind shield 7 to move, so that the wind shield 7 blocks the air inlet of the air duct 3 to reduce the amount of air entering the air inlet of the air duct 3, thereby avoiding the risk of the impeller 4 malfunctioning due to the excessive rotation speed, and protecting the wind turbine wind speed and direction monitoring device 100. In addition, it is also beneficial to reduce the cost of repairing the wind turbine wind speed and direction monitoring device 100, and the cost of use is relatively low.

[0057] Therefore, the wind speed and direction monitoring device 100 of the wind turbine generator system according to the embodiment of the present invention not only has the function of monitoring wind speed, but also has an overload self-protection function, has more functions and lower use cost.

[0058] Optionally, the wind turbine wind speed and direction monitoring device 100 of the embodiment of the present invention further includes a shell 5 , which is arranged on the turntable 2 , and the air duct 3 passes through the shell 5 in the horizontal direction, and the air inlet and air outlet of the air duct 3 are both located in the shell 5 .

[0059] In some embodiments, the wind turbine wind speed and direction monitoring device 100 of the present invention further includes a wind vane 11 and an angle measuring instrument 12. The wind vane 11 is disposed on the turntable 2, and its direction is the same as the direction of the air inlet of the air duct 3. The angle measuring instrument 12 is disposed on the turntable 2 to measure the rotation angle of the turntable 2.

[0060] like Figure 1 As shown, it is understandable that when the wind blows toward the wind vane 11, the wind vane 11 will always point in the wind direction. Since the direction of the wind vane 11 is the same as the direction of the air inlet of the air duct 3, the air inlet of the air duct 3 can always be set in the wind direction under the action of the wind vane 11, so that wind can enter the air duct 3. When the wind vane 11 rotates under the action of the wind, the wind vane 11 will drive the turntable 2 to rotate. The rotation angle measuring instrument 12 provided on the turntable 2 can measure the rotation angle of the turntable 2, thereby measuring the wind direction.

[0061] In some embodiments, the wind vane 11 includes a needle 1101, a rod 1102, and a V-shaped plate 1103, which are sequentially connected. The opening of the V-shaped plate 1103 is arranged away from the needle 1101. The V-shaped plate 1103 includes a first wing 11031 and a second wing 11032. The first wing 11031 and the second wing 11032 are both rotatably connected to the rod 1102. The first wing 11031 and the second wing 11032 can move relative to each other under the influence of wind to change the angle of the V-shaped plate 1103. A first conductor 1104 is provided on first wing plate 11031, and a second conductor 1105, opposing first conductor 1104, is provided on second wing plate 11032. First conductor 1104 and second conductor 1105 are each connected to control system 10. When the angle between V-shaped plate 1103 is less than a predetermined angle, first conductor 1104 and second conductor 1105 come into contact, and control system 10 controls first drive member 8 to move windshield 7. Wind turbine wind speed and direction monitoring device 100 also includes a return spring 1106, located within V-shaped plate 1103. The return spring 1106's ends are connected to first wing plate 11031 and second wing plate 11032, respectively.

[0062] For example, Figure 1 and Figure 7 As shown, the first wing 11031 is hinged to the pole 1102, and the second wing 11032 is hinged to the pole 1102. When wind blows over the outer surfaces of the first and second wing plates 11031, 11032, they are subjected to wind pressure and rotate and move closer to each other, squeezing the spring to reduce the angle between the V-shaped plate 1103. When the wind speed exceeds the rated speed of the impeller 4, the first and second wing plates 11031, 11032 move until the angle between the V-shaped plate 1103 is less than the preset angle, and the first conductor 1104 and the second conductor 1105 come into contact and energize. At this point, the control system 10 receives a signal indicating that the circuit between the first and second conductors 1104, 1105 is conducting, determines that the wind speed is too high, and controls the first drive member 8 to drive the windshield 7 to block the air inlet of the air duct 3. In addition, when the signal acquisition module 9 fails, the control system 10 can determine the excessive wind speed signal based on the connection status of the first conductor 1104 and the second conductor 1105.

[0063] Therefore, the wind shield 7 blocking the air inlet of the air duct 3 can not only transmit a voltage signal to the control system 10 through the signal acquisition module 9, but also determine whether the wind speed is too high through the conduction of the first conductor 1104 and the second conductor 1105, so as to control the wind shield 7 to block the air inlet of the air duct 3, forming a dual protection effect, which is beneficial to improving the working reliability of the wind speed and direction monitoring device 100 of the wind turbine set embodiment of the present invention.

[0064] When the wind speed is normal, the wind force on first wing 11031 and second wing 11032 decreases, and first wing 11031 and second wing 11032 move away from each other under the action of return spring 1106, separating first conductor 1104 and second conductor 1105. At this point, control system 10 receives a disconnection signal between first conductor 1104 and second conductor 1105, and controls first drive member 8 to drive windshield 7 away from the air inlet of air duct 3, allowing air to enter the air inlet of air duct 3 and causing impeller 4 to resume operation.

[0065] Therefore, by providing the V-shaped plate 1103 and the control system 10 to automatically control the movement of the wind shield 7, the wind turbine wind speed and direction monitoring device 100 according to the embodiment of the present invention does not require manual control and has a high degree of automation.

[0066] Optionally, the first driving member 8 is a first motor, and the first driving member 8 is connected to the windshield 7 by a gear rack transmission method.

[0067] For example, Figure 2 As shown, the wind speed and direction monitoring device 100 for a wind turbine according to an embodiment of the present invention includes a first gear 17 and a first rack 18. The first gear 17 is mounted on the output shaft of the first motor. The first rack 18 is movably connected to the housing 5 in the up-down direction. The upper end of the first rack 18 is connected to the lower end of the wind shield 7 by bolts. When the first motor rotates forward, the first rack 18 moves upward under the action of the first gear 17 to drive the wind shield 7 to move upward, so that the wind shield 7 can block the air inlet of the air duct 3. When the first motor rotates reversely, the first rack 18 moves downward under the action of the first gear 17 to drive the wind shield 7 to move downward, so that the wind shield 7 can be separated from the air inlet of the air duct 3.

[0068] In some embodiments, the wind turbine wind speed and direction monitoring device 100 according to the embodiments of the present invention further includes an impeller frame 6, which is located within and connected to the air duct 3. The impeller frame 6 has a support portion 601. The signal acquisition module 9 includes a plurality of first electrodes 901 and a plurality of second electrodes 902. The plurality of first electrodes 901 are arranged on the support portion 601 at intervals along the circumference of the air duct 3. Each first electrode 901 is covered with a first dielectric layer 905. The impeller 4 has a plurality of blades 401, each of which corresponds one-to-one to a plurality of second electrodes 902. The second electrodes 902 are arranged on the corresponding blades 401 and are arranged on the end surface of the air duct 3 adjacent to the first electrode 901 in the axial direction. Each second electrode 902 is covered with a second dielectric layer 906. The first dielectric layer 905 and the second dielectric layer 906 are formed of two dielectric materials with different electron gain and loss capacities and are arranged opposite each other in the axial direction of the air duct 3. When the impeller 4 rotates, intermittent sliding friction is generated between the first dielectric layer 905 and the second dielectric layer 906 .

[0069] like Figures 4 to 11 As shown, the impeller frame 6 has four legs evenly distributed along the circumference of the air duct 3. A circular disc is located in the center of the impeller frame 6. One end of each of the four legs is fixedly connected to the disc, and the other ends of the four legs are fixedly connected to the inner wall of the air duct 3. The impeller 4 is connected to the disc via a rotating shaft. The disc and the axis of the air duct 3 coincide. The end surface of the disc on its axis closest to the impeller 4 serves as a support portion 601. The first electrodes 901 are fan-shaped, and multiple first electrodes 901 are evenly spaced along the circumference of the disc.

[0070] Specifically, the first electrode 901 is made of copper, the first dielectric layer 905 is polydimethylsiloxane (PDMS) which is easy to obtain electrons, the second electrode 902 is made of aluminum, and the second dielectric layer 906 is made of nylon film (which is easy to lose electrons). The first electrode 901 is fixed, and the blade 401 drives the second electrode 902 to rotate during the rotation process. The second electrode 902 drives the second dielectric layer 906 to generate intermittent sliding friction with the first dielectric layer 905 on the first electrode 901. Figure 8 As shown, when the first dielectric layer 905 and the second dielectric layer 906 are in full contact, the first dielectric layer 905 and the second dielectric layer 906 are respectively positively charged and negatively charged due to the different electron gain and loss abilities of the two materials; Figure 9 As shown, the impeller 4 continues to rotate, the first dielectric layer 905 and the second dielectric layer 906 begin to separate, and due to electrostatic induction, the first electrode 901 and the second electrode 902 exhibit different electrical properties, forming a voltage; Figure 10 As shown, the impeller 4 continues to rotate, the first dielectric layer 905 and the second dielectric layer 906 are completely separated, and the induced voltage between the first electrode 901 and the second electrode 902 reaches a maximum; Figure 11 As shown, the impeller 4 continues to rotate, the first dielectric layer 905 contacts the next second dielectric layer 906, and the induced voltage between the first electrode 901 and the second electrode 902 gradually decreases and finally returns to Figure 8 In the above process, since the induced charges of the first electrode 901 and the second electrode 902 change periodically, the rotation speed of the impeller 4 can be clearly recorded, thereby corresponding to its wind speed.

[0071] In some embodiments, the second electrode 902 includes a fixed portion and an overhanging portion, the fixed portion is connected to the blade 401 , the overhanging portion is overhanging in a direction toward the first electrode 901 , and the second dielectric layer 906 is disposed on the overhanging portion.

[0072] The wind speed and direction monitoring device 100 of a wind turbine generator set in an embodiment of the present invention sets the second electrode 902 as a fixed part connected to the blade 401, and sets the second dielectric layer 906 on the overhanging part to perform sliding friction with the first dielectric layer 905, so that the junction of the second electrode 902 is simple and the arrangement is convenient, which facilitates the sliding friction between the second dielectric layer 906 and the first dielectric layer 905.

[0073] In some embodiments, the first electrode 901 and the second electrode 902 are respectively connected to the control system 10 , so that the control system 10 obtains the voltage between the first electrode 901 and the second electrode 902 .

[0074] For example, the first electrode 901 is electrically connected to the control system 10 via a wire, and the second electrode 902 is connected to the control system 10 via a conductive ring, thereby facilitating the connection between the second electrode 902 and the control system 10 .

[0075] In some embodiments, the wind turbine wind speed and direction monitoring device 100 of the embodiment of the present invention further includes a camera 13, which is arranged on the turntable 2. The control system 10 is connected to the camera 13 to control the start and stop of the camera 13. The camera 13 is used to monitor the cabin of the wind turbine.

[0076] For example, Figure 1 As shown, camera 13 is mounted on housing 5. Camera 13 is a 360-degree high-definition camera. Control system 10 controls camera 13 to capture images of the nacelle inspection area at regular intervals and transmits the images to a terminal via a data cable, thereby facilitating monitoring of the wind turbine wind speed and direction monitoring device 100 according to the embodiment of the present invention.

[0077] In some embodiments, the wind turbine wind speed and direction monitoring device 100 also includes a protective cover 14 and a second driving member 15. The protective cover 14 is movably covered on the camera 13. The second driving member 15 is connected to the protective cover 14. The second driving member 15 is used to drive the protective cover 14 to move. The control system 10 is connected to the second driving member 17 to control the movement of the protective cover 14.

[0078] For example, Figure 1 and Figure 3As shown, the upper end of the camera 13 is provided with a top plate, which is fixedly connected to the housing 5. The protective cover 14 is located below the top plate, and the opening of the protective cover 14 is stopped on the top plate. The second driving member 15 is a second motor, which is connected to the protective cover 14 through a second gear 19 and a second rack 20. The second gear 19 is mounted on the output shaft of the second motor, and the second rack 20 is arranged in the up and down direction. When the control system 10 controls the second motor to rotate forward, the second gear 19 drives the second rack 20 to move downward, and the second rack 20 drives the protective cover 14 to move downward and separate from the camera 13. The control system 10 controls the camera 13 to shoot. When the shooting is completed, the control system 10 controls the second motor to reverse to reset the protective cover 14. Therefore, the provision of the protective cover 14 is conducive to protecting the camera 14 and extending its service life.

[0079] In some embodiments, the wind turbine wind speed and direction monitoring device 100 of the embodiment of the present invention also includes a battery 16, which is arranged on the turntable 2. The battery 16 is suitable for being electrically connected to the first electrode 901 and the second electrode 902 so that the voltage generated between the first electrode 901 and the second electrode 902 can charge the battery 16. The battery 16 is electrically connected to the first driving member 8, the second driving member 15, the camera 13 and the control system 10 respectively.

[0080] The wind speed and direction monitoring device 100 of the wind turbine generator set in the embodiment of the present invention charges the battery 16 by using the voltage generated between the first electrode 901 and the second motor, and the electric energy stored in the battery 16 can provide electric energy for the first driving member 8, the second driving member 15, the camera 13 and the control system 10, thereby making the wind speed and direction monitoring device 10 of the wind turbine generator set in the embodiment of the present invention have lower energy consumption, which is conducive to further cost savings.

[0081] In some embodiments, the air duct 3 is in a frustum shape, and the cross section of the air duct 3 gradually decreases from the air inlet of the air duct 3 to the air outlet of the air duct 3 .

[0082] like Figure 1 As shown, the wind speed and direction monitoring device 100 of the wind turbine according to the embodiment of the present invention makes the air duct 3 into a frustum shape, and the cross section of the air duct 3 gradually decreases from the air inlet of the air duct 3 to the air outlet of the air duct 3, thereby facilitating the air flow into the air duct 3.

[0083] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0084] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0085] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0086] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0087] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0088] Although the above embodiments have been shown and described, it is understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those skilled in the art are all within the scope of protection of the present invention.

Claims

1. A wind speed and direction monitoring device for a wind turbine generator set, characterized in that: include: A mounting seat (1) and a turntable (2), wherein the turntable (2) is rotatably connected to the mounting seat (1); An air duct (3) and an impeller (4), wherein the air duct (3) is arranged on the turntable (2), and the impeller (4) is arranged in the air duct (3); A windshield (7), the windshield (7) being movably connected to the turntable (2), and the windshield (7) being used to block the air inlet of the air duct (3); A first driving member (8), the first driving member (8) being provided on the turntable (2) and drivingly connected to the windshield (7) so as to drive the windshield (7) to move; A signal acquisition module (9), the signal acquisition module (9) is used to convert the rotation speed signal of the impeller (4) into a voltage signal; and A control system (10), the control system (10) being connected to the signal acquisition module (9) to receive the voltage signal acquired by the signal acquisition module (9), the control system (10) being connected to the first driving member (8), and when the voltage signal received by the control system (10) exceeds a preset value, the control system (10) controls the first driving member (8) to drive the windshield (7) to move; A wind vane (11), the wind vane (11) being arranged on the turntable (2), the direction of the wind vane (11) being the same as the direction of the air inlet of the air duct (3); the wind vane (11) comprising a mark needle (1101), a mark rod (1102) and a V-shaped plate (1103) connected in sequence, the opening of the V-shaped plate (1103) being arranged facing away from the mark needle (1101), the V-shaped plate (1103) comprising a first wing plate (11031) and a second wing plate (11032), the first wing plate (11031) and the second wing plate (11032) being both rotatably connected to the mark rod (1102), the first wing plate (11031) and the second wing plate (11032) being rotatably connected to the mark rod (1102), 11032) can move relative to each other under the action of wind to change the angle of the V-shaped plate (1103), the first wing plate (11031) is provided with a first conductor (1104), the second wing plate (11032) is provided with a second conductor (1105) opposite to the first conductor (1104), the first conductor (1104) and the second conductor (1105) are respectively connected to the control system (10), when the angle of the V-shaped plate (1103) is less than a preset angle, the first conductor (1104) contacts the second conductor (1105), and the control system (10) controls the first driving member (8) to drive the windshield (7) to move; The wind turbine wind speed and direction monitoring device further comprises a reset spring (1106), wherein the reset spring (1106) is located in the V-shaped plate (1103), and the two ends of the reset spring (1106) are respectively connected to the first wing plate (11031) and the second wing plate (11032).

2. The wind speed and direction monitoring device for a wind turbine generator system according to claim 1, characterized in that: Also includes: A rotation angle measuring instrument (12), wherein the rotation angle measuring instrument (12) is arranged on the turntable (2) to measure the rotation angle of the turntable (2).

3. The wind speed and direction monitoring device for a wind turbine generator system according to claim 1, characterized in that: The device further comprises an impeller frame (6), the impeller frame (6) being located in the air duct (3) and connected to the air duct (3), the impeller frame (6) being provided with a support portion (601), the signal acquisition module (9) comprising a plurality of first electrodes (901) and a plurality of second electrodes (902), the plurality of first electrodes (901) being arranged on the support portion (601) at intervals along the circumference of the air duct (3), each of the first electrodes (901) being covered with a first dielectric layer (905), the impeller (4) being provided with a plurality of blades (401), the plurality of blades (401) and the plurality of second electrodes (902) being provided at intervals along the circumference of the air duct (3), 02) correspond one to one, the second electrode (902) is provided on the corresponding blade (401) and is arranged on the end face of the first electrode (901) in the axial direction of the air duct (3), each of the second electrodes (902) is covered with a second dielectric layer (906), the first dielectric layer (905) and the second dielectric layer (906) are formed by two dielectric materials with different electron gain and loss capabilities and are arranged opposite to each other in the axial direction of the air duct (3), and when the impeller (4) rotates, intermittent sliding friction is generated between the first dielectric layer (905) and the second dielectric layer (906).

4. The wind speed and direction monitoring device for a wind turbine generator set according to claim 3, characterized in that: The second electrode (902) comprises a fixed portion and an overhang portion, the fixed portion is connected to the blade (401), the overhang portion is overhanging in a direction toward the first electrode (901), and the second dielectric layer (906) is provided on the overhang portion.

5. The wind speed and direction monitoring device for a wind turbine generator set according to claim 3, characterized in that: The first electrode (901) and the second electrode (902) are respectively electrically connected to the control system (10), so that the control system (10) obtains the voltage between the first electrode (901) and the second electrode (902).

6. The wind speed and direction monitoring device for a wind turbine generator system according to claim 3, characterized in that: Also includes: A camera (13), the camera (13) is arranged on the turntable (2), the control system (10) is connected to the camera (13) to control the camera (13), and the camera (13) is used to monitor the cabin of the wind turbine.

7. The wind speed and direction monitoring device for a wind turbine generator set according to claim 6, characterized in that: Also includes: A protective cover (14), the protective cover (14) being movably mounted on the camera (13); and A second driving member (15) is connected to the protective cover (14) for driving the protective cover (14). The second driving member (15) is used to drive the protective cover (14) to move. The control system (10) is connected to the second driving member (15) so as to control the protective cover (14) to perform video recording.

8. The wind speed and direction monitoring device for a wind turbine generator system according to claim 7, characterized in that: Also includes: A battery (16) is provided on the turntable (2), and the battery (16) is suitable for being electrically connected to the first electrode (901) and the second electrode (902), so that the voltage generated between the first electrode (901) and the second electrode (902) charges the battery (16), and the battery (16) is electrically connected to the first driving member (8), the second driving member (15), the camera (13), and the control system (10), respectively.

9. The wind speed and direction monitoring device for a wind turbine according to any one of claims 1 to 8, characterized in that: The air duct (3) is in a frustum shape, and the cross section of the air duct (3) gradually decreases from the air inlet of the air duct (3) to the air outlet of the air duct (3).

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