Heterogeneous blade connecting mechanism of vertical axis wind turbine

Abstract

The invention discloses a heterogeneous blade connecting mechanism of a vertical-axis wind turbine, and relates to the technical field of connection of heterogeneous blades of vertical-axis wind turbines. Through cooperation of the first electric push cylinder, the first connector, the rotating table, the fixed table, the displacement table and the third electric push cylinder, the problem that blades and a shaft body are damaged due to the fact that the blades and the shaft body of a traditional vertical-axis wind turbine are fixedly connected and cannot cope with large wind directions and are changed is conveniently solved; the blades can be correspondingly adjusted when facing different wind forces; through cooperation of the mounting table, the limiting block and the screw rod, the problem that different heterogeneous blades cannot be mounted on different shaft brackets is solved, and mounting convenience and multi-scene performance are improved; the infrared sensor array is used for analyzing the motion trail of an object, birds are repelled without harm, the motion trail of a non-bird object is changed, and damage to heterogeneous blades caused by collision is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of heterogeneous blade connection of a vertical axis wind turbine, and in particular to a heterogeneous blade connection mechanism of a vertical axis wind turbine. Background Art

[0002] In the field of wind power generation, vertical axis wind turbines are becoming an important direction for the development of wind power generation due to their advantages such as small footprint, light equipment, easy maintenance and no need for yaw system, especially suitable for small equipment;

[0003] The blades and shaft of traditional vertical axis wind turbines are usually fixedly connected. This type of connection cannot effectively adjust the blades when facing large changes in wind direction. When strong winds hit, the blades cannot change their angles and are subjected to excessive wind force, which can easily cause damage to the blades and the shaft connected to them, greatly shortening the service life of the equipment and increasing maintenance costs and safety hazards. In small and medium wind direction environments, traditional blades lack the ability to fine-tune themselves. If they are in this state for a long time, the shaft frame will continue to be subjected to unbalanced forces. Over time, the shaft frame structure will gradually be damaged, affecting the stable operation of the generator. In addition, with the increasing diversification of wind power application scenarios, the demand for the use of blades with different heterogeneous types is increasing. However, traditional connection methods are difficult to meet the installation requirements between blades with different heterogeneous types and different shaft frames. The installation process is complicated and lacks flexibility, which seriously limits the application expansion of vertical axis wind turbines in multiple scenarios.

[0004] Traditional vertical axis wind turbines have the following problems during operation: Birds are prone to hitting high-speed rotating blades due to navigation errors or habitats close to wind turbines. Traditional fixed blades lack an early warning mechanism, and collisions may cause bird casualties, damage to the blade surface, imbalance of shaft force, and even generator failure; traditional equipment cannot actively identify and respond when drone inspections, plastic films, branches and other foreign objects approach the blades.

[0005] Therefore, the above problems need to be improved. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a heterogeneous blade connection mechanism for a vertical axis wind turbine.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a heterogeneous blade connection mechanism of a vertical axis wind turbine, comprising a shaft frame, the shaft frame is a hollow reinforced tube, and a vertical generator rotating shaft is installed inside the shaft frame; a bearing is installed at the upper end of the shaft frame, the upper end of the rotating shaft is placed in the shaft frame for rotation through the bearing, and the upper and lower ends of the rotating shaft are respectively sleeved with rotating tables, and the two rotating tables are multi-support rod structures;

[0008] Inside the wind turbine, there is a control console, and inside the control console, there is an intelligent control component, and the intelligent control component includes an analysis module;

[0009] A collection module, which collects the distance data between the objects and the heterogeneous blades that appear within the set warning range, collects the angle data between the moving direction of the objects and the xyz axes, and transmits the collected data to the analysis module;

[0010] An analysis module, which analyzes the distance data and angle data transmitted by the collection module, judges the motion state of the objects, judges whether there will be a collision with the heterogeneous blades, and if it is judged that there will be a collision, it analyzes whether the objects are birds. If they are birds, a driving-away signal is generated; otherwise, an interception signal is generated, and the driving-away signal or the interception signal is transmitted to the execution module;

[0011] An execution module, which receives the signals transmitted by the analysis module and performs corresponding operations according to the signal types.

[0012] Preferably, circular sliding grooves are opened at both the upper and lower ends of the rotating table, and the rotating table is rotationally connected to the shaft frame through the circular sliding grooves at the upper and lower ends; inside the outer support rods of the rotating table, self-locking first electric push cylinders are installed, the end of the output shaft of the first electric push cylinder is sleeved with a first connector, and the other end of the first connector is installed with a fixed table.

[0013] Preferably, two self-locking second electric push cylinders are installed on the outside of the fixed table, the output ends of the second electric push cylinders are respectively fixedly connected with first sliding grooves, first sliding blocks are installed in the first sliding grooves, and the output ends of the second electric push cylinders penetrate through one end of the first sliding grooves, and one end of the first sliding block is fixedly connected with the output end of the second electric push cylinder.

[0014] Preferably, the other end of the fixed table is hinged with an installation table, limiting grooves are horizontally opened at both ends inside the installation table, and a limiting block is installed on one side of the installation table; the limiting block is limited by a screw rod, and the screw rod penetrates through the installation table.

[0015] Preferably, second sliding grooves are fixedly connected to both sides of one end face of the installation table, second sliding blocks are slidably installed in the second sliding grooves, the second sliding blocks are hinged with moving rods, and the other ends of the moving rods are hinged with the first sliding blocks on the same side.

[0016] Preferably, first pressing plates are respectively arranged in the limiting grooves on the inner side of the installation table, second pressing plates are arranged at the other ends of the first pressing plates, a plurality of equally spaced springs are installed between the first pressing plates and the second pressing plates, and a piezoelectric ceramic is installed at the other end of the second pressing plate, and the piezoelectric ceramic is installed in the limiting groove.

[0017] Preferably, a protective shell is fixedly connected to the other side of the installation table. A self-locking third electric push cylinder is installed inside the protective shell. The output end of the third electric push cylinder is installed with a second connector. The other side of the second connector is installed with a displacement table. The other end of the displacement table is installed with a rotating bearing, and a notch for the movement of the second connector is opened at the other end of the protective shell.

[0018] Preferably, blades are installed at the four outer ends of the shaft frame. Sliders are fixedly connected to the upper and lower ends of the blades. The sliders are placed inside the installation table, and the sliders are placed inside the limit slots. The sliders are in contact with the first pressing plate, and one end of the sliders rotates inside the displacement table.

[0019] Preferably, the steps for the analysis module to determine whether a collision occurs are as follows:

[0020] S1: An infrared sensor array is installed outside the heterogeneous blades. A three-dimensional coordinate system is constructed with the connection line of three infrared sensors on the vertical plane as two axes of the three-dimensional coordinate system. When the distance data of the object monitored by the four infrared sensors in the infrared sensor array from themselves are d1, d2, d3, and d4 respectively, if there exists d b >d max At this time, it indicates that the warning range of the object approaching the wind turbine is monitored, b = 1, 2, 3, 4, and d max Is the preset spacing threshold;

[0021] S2: Calculate the coordinates of the object entering the warning range according to the preset coordinates of the object and the coordinates of the four infrared sensors, and calculate the moving speeds v1 and v2 of the object according to the coordinate changes of the object at adjacent acquisition time points. According to the included angle data between the moving direction of the object and the xyz axes, obtain the moving component data and displacement component data of the object in the xyz axis directions. Compare the displacement component data with the remaining length data in the corresponding directions of the heterogeneous blades. If the displacement component data is greater than the remaining length data in the corresponding direction, it is determined that no collision will occur. Otherwise, analyze the collision speed;

[0022] S3: Analyze the speed of the object when it reaches the plane where the heterogeneous blades are located and compare it with the preset speed threshold. If it is greater than the preset speed threshold, it is determined that a collision damage will occur; compare the infrared radiation value of the object, and determine that the object with an infrared radiation value greater than the preset infrared radiation threshold is a bird, generate a driving signal, and transmit the driving signal to the execution module; if the object is not a bird, generate an interception signal and transmit the interception signal to the execution module.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. Through the cooperation among the first electric cylinder, the first connector, the rotating table, the fixed table, the displacement table and the third electric cylinder, it is convenient to solve the problem that the blades and the shaft body of traditional vertical-axis wind turbines are fixedly connected and cannot cope with large wind directions, resulting in damage to the blades and the shaft body. It reduces the problem that the blades are inconvenient to adjust in the face of different wind forces. Through the cooperation among the first abutting plate, the spring and the second abutting plate, it solves the problem that the blades of traditional vertical-axis wind turbines cannot be fine-tuned automatically in medium and small wind directions, and the shaft frame will be damaged over time, improving the service life of the product; Through the cooperation among the installation table, the limiting block and the screw rod, it solves the problem that different heterogeneous blades cannot be installed on different shaft frames, improving the installation convenience and multi-scenario performance.

[0025] 2. By using an infrared sensor array to construct a three-dimensional coordinate system, real-time collecting object distance, infrared radiation value and motion direction data, analyzing the object's speed, acceleration and x / z-axis displacement components, and combining with the blade size parameters, the collision possibility can be predicted in advance; And based on the infrared radiation threshold to judge the object type, for birds, the sensitivity of birds to specific frequency sound waves is used to achieve harmless repulsion; For threats such as drones and sundries, start the high-pressure air pump to eject high-speed air flow, and change the object's motion trajectory through momentum transfer. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present invention, and constitute a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0027] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 is a partial cross-sectional view of the overall structure of the present invention;

[0029] Figure 3 is of the present invention Figure 2 is an enlarged schematic diagram of the structure of part A;

[0030] Figure 4 is a schematic diagram of the rotating table structure of the present invention;

[0031] Figure 5 is a schematic diagram of a part of the structure of the present invention;

[0032] Figure 6 is a schematic diagram of the fixed table and the installation table structure of the present invention;

[0033] Figure 7 is a half-sectional view schematic diagram of the installation table of the present invention;

[0034] Figure 8 is of the present inventionFigure 7 Schematic enlarged view of the structure of part B;

[0035] Figure 9 Schematic diagram of the protective shell and displacement table structures of the present invention;

[0036] Figure 10 Partial structure cross-sectional view of the protective shell and displacement table of the present invention;

[0037] Figure 11 Three-dimensional coordinate diagram of the present invention;

[0038] Figure 12 System flow chart of the present invention.

[0039] Numbers in the figure: 1. Axle support; 2. Bearing; 3. Rotating table; 4. First connector; 5. Fixed table; 6. Second electric push cylinder; 7. First sliding groove; 8. Second sliding groove; 9. First sliding block; 10. Second sliding block; 11. Moving rod; 12. Installation table; 13. Limit block; 14. Screw; 15. Displacement table; 16. Protective shell; 17. Third electric push cylinder; 18. Second connector; 19. First abutting plate; 20. Spring; 21. Second abutting plate; 22. Piezoelectric ceramic; 23. First electric push cylinder. Specific embodiments

[0040] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0041] Embodiment 1: Refer to Figure 1-12 , a heterogeneous blade connection mechanism of a vertical-axis wind turbine in the present invention, including an axle support 1, which is vertically installed at the upper end of the vertical-axis wind turbine through the axle support 1; the axle support 1 is a hollow reinforced pipe, and a vertical generator rotating shaft is installed inside the axle support 1; a bearing 2 is installed at the upper end of the axle support 1, and the rotating table 3 drives the generator rotating shaft to rotate through the bearing 2; the upper end of the rotating shaft is placed and rotates inside the axle support 1 through the bearing 2, and the upper and lower ends of the rotating shaft are respectively sleeved with a rotating table 3, and the heterogeneous wind blades are installed through the rotating table 3; the two rotating tables 3 are multi-support rod structures, circular sliding grooves are opened at both the upper and lower ends of the rotating table 3, and the rotating table 3 is rotationally connected to the axle support 1 through the circular sliding grooves at the upper and lower ends; self-locking first electric push cylinders 23 are installed inside the outer support rods of the rotating table 3, and a first connector 4 is sleeved at the end of the output shaft of the first electric push cylinder 23, and the fixed table 5 is installed through the first connector 4; the other end of the first connector 4 is installed with a fixed table 5.

[0042] Embodiment 2: It is basically the same as the technical solution of Embodiment 1, the difference is that, as Figure 5 , Figure 6As shown in the figure, two self-locking second electric push cylinders 6 are installed outside the fixed table 5, and the first sliding block 9 is conveniently pushed by the second electric push cylinders 6; the output ends of the second electric push cylinders 6 are respectively fixedly connected with first sliding grooves 7, and the sliding of the first sliding block 9 is conveniently limited through the first sliding grooves 7; first sliding blocks 9 are installed in the first sliding grooves 7, and the output ends of the second electric push cylinders 6 penetrate through one ends of the first sliding grooves 7. One end of the first sliding block 9 is fixedly connected with the output end of the second electric push cylinder 6. The other end of the fixed table 5 is hinged with an installation table 12, and the heterogeneous blades to be installed are conveniently limited through the installation table 12; limiting grooves are horizontally opened at both ends inside the installation table 12, and a limiting block 13 is installed on one side of the installation table 12; the heterogeneous blades are conveniently limited through the limiting block 13; the limiting block 13 is limited by a screw rod 14, and the limiting block 13 is conveniently fixed to prevent it from slipping through the screw rod 14; the screw rod 14 penetrates through the installation table 12, and second sliding grooves 8 are fixedly connected to both sides of one end face of the installation table 12. The second sliding block 10 is conveniently limited through the second sliding grooves 8; the second sliding block 10 is slidably installed in the second sliding grooves 8, and the second sliding block 10 is hinged with a moving rod 11. The horizontal angle of the installation table 12 is conveniently changed through the moving rod 11; the other end of the moving rod 11 is hinged with the first sliding block 9 on the same side.

[0043] Embodiment 3: It is basically the same as the technical solution of Embodiment 1, except that, as Figure 7 , Figure 8 , Figure 9 , Figure 10As shown, first bottom plates 19 are respectively arranged in the inner limiting grooves of the installation table 12. The first bottom plates 19 facilitate the small self-deflection of the heterogeneous blades; the other end of the first bottom plate 19 is provided with a second bottom plate 21, and the second bottom plate 21 facilitates receiving the transmission force of the first bottom plate 19; a plurality of equally spaced springs 20 are installed between the first bottom plate 19 and the second bottom plate 21, and the springs 20 facilitate providing a displacement space for the small self-deflection of the heterogeneous blades; the other end of the second bottom plate 21 is installed with a piezoelectric ceramic 22, and the piezoelectric ceramic 22 facilitates understanding the angle and force condition during the small self-deflection of the heterogeneous blades in real time; the piezoelectric ceramic 22 is installed in the limiting groove, and a protective shell 16 is fixedly connected to the other side of the installation table 12. The protective shell 16 facilitates protecting the internal third electric push cylinder 17; a self-locking third electric push cylinder 17 is installed inside the protective shell 16, and the third electric push cylinder 17 facilitates providing a driving force for the displacement table 15; the output end of the third electric push cylinder 17 is installed with a second connector 18, and the second connector 18 facilitates providing a force-bearing medium for the displacement table 15; the other side of the second connector 18 is installed with a displacement table 15, and the displacement table 15 facilitates pushing the heterogeneous blades to move in the sliding groove of the installation table 12; the other end of the displacement table 15 is installed with a rotating bearing 2, and a notch for the movement of the second connector 18 is opened at the other end of the protective shell 16. Blades are installed at the four outer ends of the shaft frame 1. The upper and lower ends of the blades are fixedly connected with sliders. The sliders are placed inside the installation table 12 and are placed in the limiting grooves. The sliders are in contact with the first bottom plate 19, and one end of the slider rotates inside the displacement table 15.

[0044] Working principle: In this embodiment, the present invention also proposes a usage method of a connection mechanism for heterogeneous blades of a vertical-axis wind turbine, including the following steps:

[0045] Step 1, connect the first electric push cylinder 23, the second electric push cylinder 6, and the third electric push cylinder 17 of the device to the internal circuit of the generator. Since circular rotating grooves are opened at the upper and lower ends of the rotating table 3, the shaft frame 1 is respectively installed in the circular rotating grooves opened on the rotating table 3. The upper end of the rotating table 3 is installed in the bearing 2 at the upper end of the shaft frame 1 through the installation groove. Then, the upper and lower ends of the heterogeneous wind blades are installed through the transverse sliding grooves of the installation table 12. Then, the limiting blocks 13 are respectively installed in the longitudinal sliding grooves of the installation table 12, and then the limiting blocks 13 are limited respectively using the screw rods 14.

[0046] Step 2, after the heterogeneous wind blade is installed, manually rotate the heterogeneous blade to observe whether it rotates smoothly. When a small wind blows in, since the first abutment plate 19, the spring 20, the second abutment plate 21 and the piezoelectric ceramic 22 are respectively installed in the mounting platform 12, the heterogeneous blade will squeeze the first abutment plate 19 with the wind, and the first abutment plate 19 squeezes the spring 20, and the spring 20 transmits the force to the piezoelectric ceramic 22. Since the piezoelectric ceramic 22 is squeezed to cause the piezoelectric effect, the rotation and force of the heterogeneous blade can be known in real time through the calculation of the control console. Since the maximum contraction limit of the spring 20 is smaller than the rotation displacement of the outer side of the horizontal sliding groove of the mounting platform 12, the heterogeneous blade will not rotate with the wind.

[0047] Step three, when the wind force gradually increases, the heterogeneous blades will increase the squeezing of the piezoelectric ceramic 22 through the first abutment plate 19, the spring 20 and the second abutment plate 21, and then the real-time data sent back by the piezoelectric ceramic 22 will be compared with the wind collector data outside the control room in real time, and then the first electric push cylinder 23 will be started to move the distance between the heterogeneous blade and the rotating table 3 with the first connector 4 as the medium, and the lift and resistance of the heterogeneous blade will be changed, thereby changing the blade force and torque of the heterogeneous blade;

[0048] Step 4: When the heterogeneous blades are retracted, the second electric push cylinders 6 at both ends of the fixed platform 5 are started, and the output end of the second electric push cylinder 6 will push the first sliding block 9 to move in the first sliding groove 7. Since the first sliding block 9 pushes the second sliding block 10 to slide in the second sliding groove 8 through the moving rod 11, the mounting platform 12 is greatly deflected to cater to the wind inlet angle, reducing the angle between the blade linear velocity and the relative wind speed angle to ensure the strength of the heterogeneous blades and prevent the overload of the generator motor;

[0049] Step five, when the heterogeneous blades are deflected significantly, the third electric push cylinder 17 in the protective shell 16 can also be started. The third electric push cylinder 17 will push the displacement platform 15 with the second connector 18 as the medium. By changing the distance of the displacement platform 15, the force conditions of each heterogeneous blade can be changed when the wind passes through the vertical axis.

[0050] Embodiment 4: An intelligent control component is also provided inside the console, and the intelligent control component includes a collection module, an analysis module and an execution module;

[0051] The acquisition module collects the distance data between the object and the heterogeneous blade that appears within the set warning range, collects the angle data between the moving direction of the object and the xyz axis, and transmits the collected data to the analysis module;

[0052] The analysis module analyzes the distance data transmitted by the acquisition module to determine the motion state of the object and whether it will collide with the heterogeneous blades. If it is determined that a collision will occur, it analyzes whether the object is a bird. If it is a bird, a drive-away signal is generated; otherwise, an interception signal is generated and the drive-away signal or interception signal is transmitted to the execution module;

[0053] An infrared sensor array is installed on the outside of the heterogeneous blade. The infrared sensor array includes four infrared sensors. The four infrared sensors are respectively installed at the four corners of the heterogeneous blade. The infrared sensors monitor the distance data between the objects near the heterogeneous blade and the heterogeneous blade and detect the temperature at set time intervals.

[0054] The infrared sensor arrays on the four heterogeneous blades monitor the distance data changes between the objects in the corresponding directions and the heterogeneous blades respectively. The centers of the four infrared sensors are on the same vertical plane, and a three-dimensional coordinate system is constructed with the connection line of the three infrared sensors on the vertical plane as the two axes of the three-dimensional coordinate system. After the three-dimensional coordinate system is constructed, the distance data with the heterogeneous blades in the historical monitoring data are obtained, and the distance data are arranged in the order of acquisition time.

[0055] The mean A1 and standard deviation B1 of Z1 distance data monitored by the same infrared sensor at the same time are calculated, and the fluctuation range of the monitoring distance data is set with the calculated mean A1 and standard deviation B1, the fluctuation range is [A1-2B1, A1+2B1], and the monitoring distance data that is not within the fluctuation range is marked as an outlier, and the number of outliers Y1 is counted. If Z1*k1 <Y1,则判定该采集时间点采集到的监测距离数据不准确,获取该采集时间点的相邻采集时间点的监测距离数据,以相邻采集时间点监测距离数据的均值A2作为该采集时间点的监测距离数据;若Z1*k1≥Y1,则对异常值进行剔除,计算剩余检测距离数据的均值A3作为该采集时间点的监测距离数据;

[0056] When the distance data between the four infrared sensors in the infrared sensor array and the object are d1, d2, d3, and d4 respectively, if there is d b >d max When the object is detected approaching the warning range of the wind turbine, b=1,2,3,4, d max is the preset distance threshold; the coordinate change of the object is analyzed, the coordinates of the preset object are (x, y, z), the coordinates of the four infrared sensors are (0, 0, 0), (c, 0, 0), (c, 0, c), (0, 0, c), c is the distance data between adjacent infrared sensors; then the distance distance Distance Distance Calculated Then the coordinates of the object entering the warning range are

[0057] The coordinates of the object corresponding to adjacent acquisition time points are (x1, y1, z1) and (x2, y2, z2) respectively. Then the moving speed of the object t1 is the acquisition time interval; according to the coordinate data corresponding to another adjacent acquisition time point, the moving speed v2 of the object at this moment is calculated. If v2 ≠ v1, it is determined that the object is in the variable speed stage, and the acceleration The time required for the object to reach the plane where the heterogeneous blade is located t2 is the time interval between two speed data, y d is the coordinate data of the object on the y-axis; according to the angles between the moving direction of the object and the x-axis and z-axis, the speed components and acceleration components of the object in the x-axis and z-axis directions are calculated as v 2x 、v 2z and a x 、a z Then when the object reaches the plane where the heterogeneous blade is located, the displacements in the x-axis and z-axis directions are respectively If Δx > c - x2 or Δz > c - z2, it is determined that the object will not collide with the heterogeneous blade; otherwise, the collision speed is analyzed;

[0058] If the object is in the acceleration stage, the speed of the object when it reaches the plane where the heterogeneous blade is located y d is the coordinate data of the object on the y-axis; if the speed v3 of the object when it reaches the plane where the heterogeneous blade is located > v max ,it is determined that the object with this speed will cause collision damage to the heterogeneous blade. If the infrared sensor array detects that the infrared radiation of the object exceeds the preset infrared radiation threshold, it is determined that the object is a bird, a repelling signal is generated, and the repelling signal is transmitted to the execution module, v max is the preset speed threshold; if the object is not a bird, an interception signal is generated and the interception signal is transmitted to the execution module;

[0059] After receiving the driving-away signal, the execution module applies a voltage to the piezoelectric ceramic, causing the piezoelectric ceramic to deform and generate mechanical vibration to form ultrasonic waves. Through the ultrasonic waves of 20 - 50 kHz and in combination with a stroboscopic LED lamp, a multi-dimensional driving-away field is formed to drive away birds, protecting the birds while reducing blade impact damage. After receiving the interception signal, the execution module ejects high-pressure gas through a high-pressure air pump installed on the wind turbine to intercept the flying object and change the moving trajectory of the object.

[0060] If v2 = v1, it is determined that the object is in the uniform motion stage, and the speed v3 of the object when it reaches the plane of the heterogeneous blade is v1; when the object reaches the plane of the heterogeneous blade, the displacements in the x-axis and z-axis directions are respectively Δx = v 2x t3, Δz = v 2z t3. If Δx > c or Δz > c, it is determined that the object will not collide with the heterogeneous blade; conversely, if v1 > v max , it is determined that the object at this speed will cause collision damage to the heterogeneous blade, and if the object is a bird, a driving-away signal is generated and transmitted to the execution module.

[0061] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A heterogeneous blade connection mechanism for a vertical axis wind turbine, comprising a shaft frame (1), characterized in that: The shaft frame (1) is a hollow reinforced pipe, and a vertical generator rotating shaft is installed inside the shaft frame (1); a bearing (2) is installed at the upper end of the shaft frame (1), and the upper end of the rotating shaft is placed inside the shaft frame (1) through the bearing (2) for rotation, and rotating platforms (3) are respectively sleeved at the upper and lower ends of the rotating shaft. The two rotating platforms (3) are of a multi-support rod structure; A control console is arranged inside the wind turbine generator, and an intelligent control component is arranged inside the control console. The intelligent control component includes an analysis module; A collection module collects the distance data between the objects and the heterogeneous blades within the set warning range, collects the angle data between the moving direction of the objects and the xyz axes, and transmits the collected data to the analysis module; The analysis module analyzes the distance data and the angle data transmitted by the collection module, judges the motion state of the objects, judges whether there will be a collision with the heterogeneous blades. If it is judged that a collision will occur, it analyzes whether the objects are birds. If they are birds, a driving-away signal is generated; otherwise, an interception signal is generated, and the driving-away signal or the interception signal is transmitted to the execution module; The execution module receives the signals transmitted by the analysis module and performs corresponding operations according to the signal types.

2. The heterogeneous blade connection mechanism of a vertical axis wind turbine according to claim 1, characterized in that: Circular sliding grooves are respectively opened at the upper and lower ends of the rotating platform (3), and the rotating platform (3) is rotationally connected to the shaft frame (1) through the circular sliding grooves at the upper and lower ends; self-locking first electric push cylinders (23) are respectively installed inside the outer support rods of the rotating platform (3). The end of the output shaft of the first electric push cylinder (23) is sleeved with a first connector (4), and the other end of the first connector (4) is installed with a fixed platform (5).

3. The heterogeneous blade connection mechanism of a vertical axis wind turbine according to claim 2, characterized in that: Two self-locking second electric push cylinders (6) are installed on the outside of the fixed platform (5). The output ends of the second electric push cylinders (6) are respectively fixedly connected with first sliding grooves (7). First sliding blocks (9) are respectively installed inside the first sliding grooves (7), and the output ends of the second electric push cylinders (6) penetrate through one ends of the first sliding grooves (7). One end of the first sliding block (9) is fixedly connected with the output end of the second electric push cylinder (6).

4. The heterogeneous blade connection mechanism of a vertical axis wind turbine according to claim 3, characterized in that: The other end of the fixed platform (5) is hinged with an installation platform (12). Limit grooves are horizontally opened at both ends inside the installation platform (12), and a limit block (13) is installed on one side of the installation platform (12); the limit block (13) is limited by a screw rod (14), and the screw rod (14) penetrates through the installation platform (12).

5. The heterogeneous blade connection mechanism of a vertical axis wind turbine according to claim 4, characterized in that: Second sliding grooves (8) are fixedly connected to both sides of one end face of the installation platform (12). Second sliding blocks (10) are slidably installed inside the second sliding grooves (8). The second sliding blocks (10) are hinged with moving rods (11), and the other ends of the moving rods (11) are hinged with the first sliding blocks (9) on the same side.

6. The heterogeneous blade connection mechanism of a vertical-axis wind turbine according to claim 4, characterized in that: First pressing plates (19) are respectively arranged inside the limit grooves on the inner side of the installation platform (12). Second pressing plates (21) are arranged at the other ends of the first pressing plates (19). A plurality of equidistant springs (20) are installed between the first pressing plates (19) and the second pressing plates (21). The other ends of the second pressing plates (21) are installed with piezoelectric ceramics (22), and the piezoelectric ceramics (22) are installed inside the limit grooves.

7. The heterogeneous blade connection mechanism of a vertical axis wind turbine according to claim 4, characterized in that: On the other side of the mounting table (12), a protective housing (16) is fixedly connected. Inside the protective housing (16), a self-locking third electric push cylinder (17) is installed. The output end of the third electric push cylinder (17) is provided with a second connector (18). On the other side of the second connector (18), a displacement table (15) is installed. At the other end of the displacement table (15), a rotating bearing is installed, and a notch for the movement of the second connector (18) is opened at the other end of the protective housing (16).

8. The heterogeneous blade connection mechanism of a vertical axis wind turbine according to claim 1, characterized in that: Blades are installed at the four outer ends of the shaft frame (1). Sliders are fixedly connected to the upper and lower ends of the blades. The sliders are placed inside the mounting table (12), and the sliders are placed in the limiting grooves. The sliders are in contact with the first abutting plate (19), and one end of the sliders rotates inside the displacement table (15).

9. The heterogeneous blade connection mechanism of a vertical axis wind turbine according to claim 1, characterized in that: The steps for the analysis module to determine whether a collision occurs are as follows: S1: An infrared sensor array is installed outside the heterogeneous blade. A three-dimensional coordinate system is constructed with the connection line of three infrared sensors on the vertical plane as two axes of the three-dimensional coordinate system. When the distance data between the four infrared sensors in the infrared sensor array and the object they monitor are d1, d2, d3, and d4 respectively, if there exists d b >d max at this time, it indicates that the warning range of the object approaching the wind turbine is detected, where b = 1, 2, 3, 4, and d max is a preset spacing threshold; S2: Calculate the coordinates of the object entering the warning range according to the preset coordinates of the object and the coordinates of the four infrared sensors. According to the coordinate changes of the object at adjacent acquisition time points, calculate the moving speeds v1 and v2 of the object. According to the included angle data between the moving direction of the object and the xyz axes, obtain the moving component data and displacement component data of the object in the xyz axis directions. Compare the displacement component data with the remaining length data in the corresponding directions of the heterogeneous blades. If the displacement component data is greater than the remaining length data in the corresponding direction, it is determined that no collision will occur. Otherwise, analyze the collision speed; S3: Analyze the speed of the object when it reaches the plane where the heterogeneous blades are located and compare it with the preset speed threshold. If it is greater than the preset speed threshold, it is determined that a collision damage will occur; Compare the infrared radiation values of the objects, determine that the objects with infrared radiation values greater than the preset infrared radiation threshold are birds, generate a repelling signal, and transmit the repelling signal to the execution module; If the object is not a bird, generate an interception signal and transmit the interception signal to the execution module.

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