Wind power generation equipment

Abstract

According to the wind power generation equipment provided by the utility model, the structure of the power generation equipment is improved, so that the shaking of the wind power generation equipment caused by inertia or external force impact is reduced when wind power or other external forces (such as gust, sudden change of wind direction and the like) suddenly change. The wind power generation equipment comprises a connecting part and a plurality of fan blades fixedly connected to the connecting part, and each fan blade can rotate in the first rotating direction; the connecting part is provided with a second swinging piece group, the second swinging piece group comprises a plurality of second swinging devices, and the second swinging devices belonging to the same second swinging piece group are uniformly distributed around the circumferential direction of the connecting part; the fixed end of the second swinging device is directly or indirectly hinged with the connecting part, and can swing between two limit positions around a rotating center line parallel to the axial direction of the connecting part; the connecting line from the circle center of the connecting part to the fixed end is defined as a reference line, the second swing device is further provided with a free end, and the free end is always located on the rear side of the corresponding reference line in the first rotation direction and forms an acute angle with the reference line.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation technology, and in particular to a wind power generation device. Background Technology

[0002] As a renewable energy power generation device, wind turbines work by using wind power to rotate the turbine blades, which then generate electricity through a series of energy conversion processes. However, in practical applications, the efficiency of wind turbines is often significantly affected by environmental factors.

[0003] When wind speed changes suddenly, the fan blades, due to their large mass and rotational speed, generate significant inertial forces. As a whole system, the wind turbine may also sway due to inertia or external impacts when wind force or other external forces (such as gusts or sudden changes in wind direction) change abruptly. This swaying seriously affects the stability and safety of wind power generation equipment. Utility Model Content

[0004] The purpose of this utility model is to provide a wind power generation device that, by improving the structure of the power generation device, reduces the shaking caused by inertia or external force impact when the wind or other external forces (such as gusts, sudden changes in wind direction, etc.) change suddenly.

[0005] To achieve the above objectives, this utility model provides a wind power generation device, including a connecting part and a plurality of fan blades fixedly connected to the connecting part, each of the fan blades being able to rotate along a first direction;

[0006] The connecting part is provided with a second swing component group, which includes a plurality of second swing devices. The second swing devices belonging to the same second swing component group are evenly distributed around the circumference of the connecting part. The fixed end of the second swing device is directly or indirectly hinged to the connecting part and can swing between two extreme positions around a rotation centerline parallel to the axis of the connecting part. The line connecting the center of the connecting part to the fixed end is defined as a reference line. The second swing device also has a free end, which is always located behind its corresponding reference line at the first turning point and forms an acute angle with the reference line.

[0007] By adopting the technical solution of this application, the second swing assembly provides a downward stabilizing force to the connection, effectively resisting the upward inertial force or impact force generated when wind or other external forces suddenly decrease or disappear. This is because, in a wind turbine, the blades and generator may generate significant inertial forces when wind speed changes suddenly. The gravity of the second swing assembly helps the system maintain relative stability and reduces swaying. When wind or other external forces change suddenly, the system may sway horizontally due to inertia or external impact. The gravity of the second swing assembly provides a downward anchor point for the entire wind power generation equipment, reducing this horizontal swaying by increasing the system's vertical stability.

[0008] Optionally, the second swing device further includes a second pendulum rod, one end of which is the fixed end and the other end is the free end; a second pendulum ball is fixedly connected to the free end. By setting the second pendulum ball, the mass of the distal end of the second swing device is increased, thereby increasing the compensation effect on the wind power generation device.

[0009] Optionally, the connecting portion is provided with an annular first baffle and a second baffle, the first baffle and the second baffle being used to limit the two swing limit positions of the pendulum ball two, the first baffle being located outside the second baffle compared to the second baffle; in the radial direction, the pendulum ball two is located between the first baffle and the second baffle.

[0010] By using the connecting part to stop the pendulum in its swing direction, the swing position of the second pendulum can be limited, thereby stopping the second pendulum in its swing trajectory and transmitting the compensating force of the second pendulum to the connecting part through the two baffles.

[0011] Optionally, the connecting portion includes a seat portion for fixed connection with the output shaft of the generator, the seat portion including a seat bottom wall located on the radial surface of the connecting portion and a seat side wall connected to the seat bottom wall, the seat side wall extending axially;

[0012] The connecting part further includes a fixed seat, which is axially pressed against the bottom wall of the seat. The second swing device is located radially between the bottom wall of the seat and the fixed seat, and the fixed end is hinged to the fixed seat.

[0013] In this way, the second swinging device is able to rotate axially around the fixed base and swing at two swing limit positions relative to the reference line.

[0014] Optionally, a limiting structure is fixedly connected to the inner wall surface of the seat sidewall. The limiting structure includes a first baffle and a second baffle. By providing the first and second baffles on the seat sidewall, the torque on the connecting part is compensated.

[0015] Optionally, the limiting structure includes two annular vertical walls that are parallel to each other along the axial direction, one end of which is fixedly connected to the side wall of the seat; a first baffle and a second baffle are provided between the two vertical walls.

[0016] This allows the vertical walls to support the two annular arms, achieving a better force transmission effect.

[0017] Optionally, the two ends of the first baffle are fixedly connected to the corresponding vertical walls. In this way, the two ends of the first baffle are fixed to the two vertical walls, which improves its structural strength.

[0018] Optionally, the second baffle includes two wall segments, which are fixed to the vertical wall on the corresponding side; the two wall segments, the first baffle, and part of the vertical wall form a receiving cavity, and the pendulum ball is always located in the receiving cavity.

[0019] In this way, the second barrier can be set with two force points on both sides of the pendulum ball, thereby increasing the uniformity of the force on the pendulum ball.

[0020] Optionally, two second oscillating member groups are provided; each second oscillating member group is distributed sequentially along the axial direction of the connection. This further increases the gravity compensation effect on the wind power generation equipment.

[0021] Optionally, the pendulum ball belonging to one of the second pendulum groups can form a stop with one of the wall segments, and the pendulum ball belonging to another of the second pendulum groups can form a stop with another of the wall segments.

[0022] Therefore, it is possible to stop the pendulum ball of the second oscillating component group belonging to the two wall segments.

[0023] Other features and advantages of this specification will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of this specification and, together with their description, serve to explain the principles of this specification.

[0025] Figure 1 A schematic diagram of the overall structure of the wind power generation equipment provided by this utility model;

[0026] Figure 2 A right-side view of the overall structure of the wind power generation equipment provided by this utility model;

[0027] Figure 3 This is a schematic diagram of the fan blade section;

[0028] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0029] Figure 5 A front view of a portion of the structure of a wind power generation device;

[0030] Figure 6 for Figure 5 Enlarged view of point B in the middle;

[0031] Figure 7 for Figure 5 Enlarged view of point C in the middle;

[0032] Figure 8 for Figure 5 Enlarged view of point D in the middle;

[0033] Figure 9 for Figure 5 Enlarged view at point E in the middle;

[0034] Figure 10 for Figure 5 Enlarged view at point F;

[0035] Figure 11 This is a schematic diagram of the connecting part;

[0036] Figure 12 yes Figure 11 Enlarged view of point G in the middle;

[0037] Figure 13 This is a partial structural diagram of the connecting part;

[0038] Figure 14 This is a cross-sectional structural diagram of a wind power generation device.

[0039] Figure 15 yes Figure 11 The front view;

[0040] Figure 16 yes Figure 15 Enlarged view of section H in the middle;

[0041] Figure 17 yes Figure 15 Enlarged view of point I in the middle;

[0042] Figure 18 yes Figure 15 Enlarged view of point J in the middle;

[0043] Figure 19 yes Figure 14 A magnified schematic diagram of part of the structure.

[0044] Figure label:

[0045] 1-Support column; 11-Base; 2-Generator; 21-Heat dissipation plate; 3-Solar panel; 4-Connecting part; 4a-Seat part; 4a-1-Seat bottom wall; 4a-2-Seat side wall; 4b-Cover plate part; 41-Fan blade; 411-First limiting protrusion; 412-Front side part; 413-Rear side part; 414-Protruding ridge part; 42-Mounting plate; 421-First swing shaft; 43-First swing rod; 44-Pendulum ball one; 45-Seat side wall (repeated item, consider whether to modify or retain); 46-Limiting structure; 461- First baffle; 460-accommodating cavity; 462-vertical wall; 463-second baffle; 463a-wall segment; 5-fixed seat; 51-support member; 52-second swing shaft; 53-second swing rod; 54-second swing ball; L1-reference line; s1-first reference center line; s2-second reference center line; 40-first swing component group; 44a-type swing ball component; 44a-1-first swing ball; 44b-type swing ball component; 44b-1-second swing ball; 50-second swing component group; 50a-second swing device. Detailed Implementation

[0046] This utility model provides a wind power generation device. In the embodiments of this application, by improving the structure of the power generation device, the shaking of the wind power generation device caused by inertia or external force impact is reduced when wind force or other external forces (such as gusts, sudden changes in wind direction, etc.) change suddenly.

[0047] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0048] Relational terms such as “first” and “second” are used merely to distinguish one component from another that has the same name, without necessarily requiring or implying any such actual relationship or order between the components.

[0049] like Figures 1-19 As shown, Figure 1 A schematic diagram of the overall structure of the wind power generation equipment provided by this utility model; Figure 2 A right-side view of the overall structure of the wind power generation equipment provided by this utility model; Figure 3 This is a schematic diagram of the fan blade section; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 A front view of a portion of the structure of a wind power generation device; Figure 6 for Figure 5 Enlarged view of point B in the middle; Figure 7 for Figure 5 Enlarged view of point C in the middle; Figure 8 for Figure 5 Enlarged view of point D in the middle; Figure 9 for Figure 5 Enlarged view at point E in the middle; Figure 10 for Figure 5 Enlarged view at point F; Figure 11 This is a schematic diagram of the connecting part; Figure 12 yes Figure 11 Enlarged view of point G in the middle; Figure 13 This is a partial structural diagram of the connecting part; Figure 14 This is a cross-sectional structural diagram of a wind power generation device. Figure 15 yes Figure 11 The front view; Figure 16 yes Figure 15 Enlarged view of section H in the middle; Figure 17 yes Figure 15 Enlarged view of point I in the middle; Figure 18 yes Figure 15 Enlarged view of point J in the middle; Figure 19 yes Figure 14 A magnified schematic diagram of part of the structure.

[0050] To achieve the above objectives, this utility model provides a wind power generation device, which includes a connecting part 4 and a plurality of fan blades 41 fixedly connected to the connecting part 4, serving as a connecting platform for the fan blades 41. Each fan blade 41 is evenly distributed along the circumference of the connecting part 4. Each fan blade 41 is capable of rotating in a first direction of rotation.

[0051] like Figures 1 to 5 In the state shown, the first direction of rotation is clockwise as shown in the figure. In addition, the wind power generation equipment also includes a generator 2, the output end of which is either driven or directly fixedly connected to the connecting part 4. After the connecting part 4 is rotated by the fan blade 41, it drives the output end of the generator 2 to rotate, thereby converting mechanical energy into electrical energy.

[0052] The wind power generation equipment also includes a first oscillating component group 40. Each first oscillating component group 40 includes several first oscillating devices. The first oscillating devices can freely oscillate at a certain angle relative to the fan blade 41. Each fan blade 41 has a first reference centerline s1 passing through the center of the connecting part 4, defined in the first rotation direction. The part of the fan blade 41 located in front of the first reference centerline s1 is the front side 412, and the part located behind the first reference centerline s1 is the rear side 413. Each first oscillating component group 40 is disposed in the front side 412. It can be understood that the front side 412 is the right side of the fan blade 41 in the example shown in the figure, and the rear side 413 is the left side. If the first rotation direction is counterclockwise, the front side 412 is the left side of the fan blade 41 in the figure, and the rear side 413 is the right side of the fan blade 41. Those skilled in the art can select a suitable installation position of the first oscillating component group 40 on the fan blade 41 according to the different rotation directions.

[0053] For details, please continue to see Figures 1-5The first swing device includes a pendulum ball 44 and a connecting assembly. The pendulum ball 44 is hinged to the front side 412 of the fan blade 41 via the connecting assembly. The connecting assembly includes a first swing rod 43 and a mounting plate 42. One end of the first swing rod 43 is fixedly connected to the pendulum ball 44, and the other end is hinged to the fan blade 41. The hinge connection between the pendulum ball 44 and the fan blade 41 is achieved by setting the first swing rod 43.

[0054] Mounting plate 42 is fixedly connected to fan blade 41, and first swing arm 43 is hinged to the side of mounting plate 42 away from fan blade 41. Specifically, the connecting assembly also includes a swing shaft that passes through mounting plate 42 and fan blade 41 along the thickness direction of fan blade 41, forming a fixed connection between them. This can be achieved through threaded connection, riveting, or welding. A portion of the swing shaft extends along the thickness direction of fan blade 41 to the surface of fan blade 41. First swing arm 43 has a mounting hole through which a portion of the swing shaft passes and limits the first swing arm 43 axially. In this way, the first swing arm 43 can rotate around the swing shaft.

[0055] Alternatively, the mounting plate 42 can be fixed to the fan blade 41 by bonding, welding, or threading, and the swing shaft can be threaded to the mounting plate 42. This allows the mounting plate 42 to support the first swing arm 43 at a certain height, preventing interference between the first swing arm 43 and the surface of the fan blade 41 during swinging. In the above embodiment, the mounting plate 42 is a circular plate or a directional plate, and the swing shaft passes through the center of the mounting plate 42.

[0056] The swing shaft includes a shaft body, a first stop protrusion and a second stop protrusion. After the shaft body is connected to the mounting plate 42, the first stop protrusion presses against the side of the mounting plate 42 away from the fan blade 41 along the axial direction of the swing shaft. The second stop protrusion is spaced apart from the first stop protrusion. The first swing rod 43 is connected to the part between the first stop protrusion and the second stop protrusion of the shaft body, thereby defining the first swing rod 43 between the first stop protrusion and the second stop protrusion.

[0057] In the aforementioned embodiment, each fan blade 41 has a first surface and a second surface along the axial direction of the connecting portion 4. That is, the first surface and the second surface are arranged opposite to each other in the thickness direction of the fan blade 41. A first oscillating component group 40 is provided on at least one of the first surface and the second surface. The first oscillating component group 40 is provided on the portion of the first surface located at the front side portion 412. Alternatively, the first oscillating component group 40 is provided on the portion of the second surface located at the front side portion 412. It is also possible that the first oscillating component group 40 is provided on the portions of both the first surface and the second surface located at the front side portion 412. In this way, two oscillating components are provided on each individual fan blade 41.

[0058] By arranging the first oscillating element group 40 on one or both of the first and second surfaces, the wind energy capture efficiency can be improved by the oscillation of the first oscillating device, and the rotation time of the fan blade 41 of the first oscillating element group 40 can be longer when the wind force is insufficient.

[0059] Taking the first surface as an example, the connection relationship between the first swing device and the fan blade 41 is explained again. The bottom of the mounting plate 42 is fixed to the first surface of the fan blade 41, one end of the first swing rod 43 is fixed to the first surface of the swing shaft, and the end of the first swing rod 43 rotates on the inner side wall of the mounting plate 42 through the swing shaft. The other end of the first swing rod 43 is fixedly connected to the first surface of the pendulum ball 44. When the fan blade 41 rotates at the top of the mounting frame, the pendulum ball 44 swings on the first surface of the fan blade 41.

[0060] Alternatively, the line connecting the positions of the first rocker arms 43 hinged to the fan blades 41 is parallel to the first reference centerline s1. Since the line connecting the positions of the first rocker arms 43 hinged to the fan blades 41 is parallel to the first reference centerline s1, the fan blades 41 can maintain a relatively uniform angle and speed when rotating, thereby helping to generate a uniform airflow distribution.

[0061] Optionally, the fan blade 41 is also provided with a plurality of first limiting protrusions 411 to limit the extreme position of the pendulum ball 44, and the extension direction of each first limiting protrusion 411 is perpendicular to the first reference center line s1. Thus, when the first limiting protrusion 411 abuts against the oscillating member, the first limiting protrusion 411 can accurately limit the oscillation range of the pendulum ball 44, preventing it from oscillating excessively under the action of wind force, thereby avoiding damage to the structure of the fan blade 41 due to excessive deformation.

[0062] In the example shown, a pendulum ball 44 is positioned between two adjacent first limiting protrusions 411, defined as a type of pendulum ball component 44a. The first limiting protrusions 411 are plate-like structures, fixedly mounted on the first and second surfaces of the fan blade 41. The first limiting protrusions 411 are parallel to each other and perpendicular to the first reference center line s1. The distance between two adjacent first limiting protrusions 411 is equal. A mounting plate 42 is located between two adjacent first limiting protrusions 411. Each mounting plate 42 is located at the edge of the front side portion 412. This ensures that the first oscillating component assembly 40 remains stable when the fan blade 41 rotates, avoiding mutual interference or collision, while ensuring that the pendulum ball 44 can oscillate smoothly on the surface of the fan blade 41.

[0063] like Figure 3 and Figure 4As shown, in a specific example, the surface of the fan blade 41 is provided with a protruding ridge 414, and the first reference centerline s1 passes through the center of the protruding ridge 414. The protruding ridge 414 is located between the front side portion 412 and the rear side portion 413 of the fan blade 41. One end of the first limiting protrusion 411 abuts against and is fixedly connected to the side wall of the protruding ridge 414, thereby further improving the connection strength between the first limiting protrusion 411 and the fan blade 41.

[0064] Each type of pendulum component 44a has a first extreme position and a second extreme position. In the extension direction of the first reference center line s1, the first extreme position is further away from the connecting portion 4 than the second extreme position. In the first extreme position, the first pendulum rod 43 of each type of pendulum component 44a abuts against one of the two adjacent first limiting protrusions 411. In the second extreme position, the first pendulum rod 43 of each type of pendulum component 44a abuts against the other one.

[0065] Continue to refer to, for example Figures 3 to 4 As shown, as an optional example, the angle of swing of a pendulum 44a from the first extreme position to the second extreme position is 45°-70°. More preferably, it is 60°. For example, the second reference center line s2 is defined as the axis parallel to the first limiting protrusion 411 and passing through the center of the first swing axis 421. The swing amplitude of the pendulum 44 of the pendulum 44a is located above and below the second reference center line s2, and the angle between the swing angle of the pendulum 44 and the second reference center line s2 is 30°.

[0066] This limits the swing angle of a type of pendulum 44a, thereby ensuring a reasonable compensation effect for the fan blade 41.

[0067] In some embodiments, a pendulum ball is also provided outside the outermost first limiting protrusion 411 of the fan blade 41, and this pendulum ball 44 is defined as a type II pendulum ball 44b. Here, "outer" refers to the radial direction relative to the connecting portion 4. In the radial direction of the connecting portion 4, the side pointing towards the connecting portion 4 is "inner," and vice versa. The type II pendulum ball 44b has a third extreme position and a fourth extreme position. In the third extreme position, the first pendulum rod 43 of the type II pendulum ball 44b abuts against the first limiting protrusion 411; the fan blade 41 is also provided with a second limiting protrusion, and in the fourth extreme position, the first pendulum rod 43 of the type II pendulum ball 44b abuts against the second limiting protrusion. Here, a protruding ridge portion 414 can be used as the second limiting protrusion, or an additional limiting structure 46 can be provided, both of which are within the protection scope of this patent.

[0068] For reference Figures 5 to 10The swing angle of the pendulum ball 44 of the second-type pendulum component 44b is 180 degrees. The swing amplitude of the pendulum ball 44 of the second-type pendulum component 44b is from the position where the angle between the pendulum ball 44 of the second-type pendulum component 44b and the vertical downward direction is 45° to the position where the angle between the pendulum ball 44 of the second-type pendulum component 44b and the vertical downward direction is 225°. The swing amplitude swings from one side of the first limiting protrusion 411 to the position where it approaches or exceeds the first reference center line s1.

[0069] Specifically, at the third extreme position, the angle between the pendulum ball 44 of the second-type pendulum component 44b and the first reference center line s1 is 45°; at the third extreme position, the angle between the pendulum ball 44 of the second-type pendulum component 44b and the same side of the first reference center line s1 is 225°.

[0070] Of course, besides the 180° rotation angle of the second-order pendulum 44b from the third extreme position to the fourth extreme position, other obtuse angle values ​​are also possible, which can be selected by those skilled in the art as needed. This limits the swing angle of the second-order pendulum 44b, thereby ensuring a reasonable compensation effect on the fan blade 41.

[0071] In the various embodiments described above, at least a portion of the pendulum ball 44 of each first oscillating component assembly 40 is always located outside the fan blade 41. Here, "outside" refers to the portion of the pendulum ball 44 located outside the fan blade 41 during the first rotation. This further increases the lever arm, thereby enhancing the compensating effect of the pendulum ball 44 on the fan blade 41, and also further increases the wind-receiving area.

[0072] In other examples, the first oscillating devices of each first oscillating component group 40 are arranged sequentially along the extension direction of the first reference center line s1. This avoids interference between the individual pendulum balls and also increases the compensation effect of the first oscillating component group 40.

[0073] refer to Figures 6 to 8 The diagram shows the force analysis of the rotational positions of pendulum ball 44 in different types of pendulum ball components 44a and 44b. For ease of description, pendulum ball 44 in type 1 pendulum ball component 44a is defined as the first pendulum ball 44a-1, and pendulum ball 44 in type 2 pendulum ball component 44b is defined as the second pendulum ball 44b-1.

[0074] When the fan blade 41 rotates to the lower left position shown in the figure, the first pendulum ball 44a-1 is subjected to a downward gravity G, a pulling force F1 from the first pendulum rod 43, a force F3 from the first limiting protrusion 411, and a centrifugal force F2. In this state, under the combined action of the pulling force F1 from the first pendulum rod 43, the force F3 from the first limiting protrusion 411, and the centrifugal force F2, the first pendulum ball 44a-1 can have a certain effect on rotating the fan blade 41. Specifically, at this time, the gravity G and the pulling force F1 from the first pendulum rod 43 form an acute angle, the force F3 from the first limiting protrusion 411 is perpendicular to the gravity G, and points to both sides of the swing direction of the first pendulum rod 43. Between the force F3 from the first limiting protrusion 411 and the gravity G is the centrifugal force F2, which points to the lower left.

[0075] At this time, since the second pendulum ball 44b-1 will not come into contact with the first limiting protrusion 411, the second pendulum ball 44b-1 is only subject to the centrifugal force F2 in addition to the gravity G and the tension F1 from the first pendulum rod 43. In this state, F2 is parallel to the first reference centerline s1 and points to the outside of the fan blade 41.

[0076] When the fan blade 41 rotates to the top, the first pendulum ball 44a-1 is subjected to a downward gravity G, a pulling force F1 from the first pendulum rod 43, a force F3 from the first limiting protrusion 411, and a centrifugal force F2. In this state, the direction of the centrifugal force F2 gradually changes from the lower left to the upper, and F3 points to the lower right due to the change in the position of the fan blade 41.

[0077] At this moment, the centrifugal force F2, the tension F1, and the gravity G of the second pendulum ball 44b-1 are on the same straight line and point in opposite directions.

[0078] As the fan blade 41 rotates to the lower right side, the centrifugal force F2 of the second pendulum ball 44b-1 gradually forms an acute angle with gravity G.

[0079] By adopting the wind power generation equipment of this application, a first swing device is provided on the front side 412 of the fan blade 41. In this way, during the rotation of the fan blade 41, the first swing device can swing with the change of the rotation position of the fan blade 41, thereby increasing the windward area of ​​the fan blade 41, improving the wind energy capture efficiency, and reducing the impact and vibration of the generator 2 caused by wind speed fluctuations through gravity compensation, thus extending the service life of the equipment. At the same time, the first swing component group 40 uses gravity to maintain rotational inertia, so that when the wind is insufficient, the rotation of the fan blade 41 can be maintained for a period of time through inertia.

[0080] refer to Figures 1 to 3As shown in the above embodiments, the wind power generation equipment also includes a support column 1, with a base 11 fixed to the bottom of the support column 1; the bottom of the generator 2 is fixed to the top of the support column 1, and a heat dissipation plate 21 for heat dissipation is provided on the outer side of the generator 2. The generator 2 is located on the top of the support column 1 and is responsible for converting wind energy into electrical energy. The heat dissipation plate 21 on its outer side can effectively dissipate the heat generated during the operation of the generator 2, preventing the internal temperature of the generator 2 from becoming too high and affecting the normal operation of the generator 2. In addition, a solar panel 3 for power supply is fixed on the top of the generator 2. The solar panel 3 can absorb solar energy and convert it into electrical energy when there is sufficient sunlight, providing additional power support for the generator 2, which helps to ensure the continuous operation of the equipment and power supply when wind speed is low or at night when wind energy is insufficient.

[0081] In the various embodiments described above, see Figures 11-19 As shown, the connecting portion 4 of this application is provided with a second swinging component group 50, which includes a plurality of second swinging devices 50a. The second swinging devices 50a belonging to the same second swinging component group 50 are evenly distributed around the circumference of the connecting portion 4. The fixed end of the second swinging device 50a is directly or indirectly hinged to the connecting portion 4 and can swing between two extreme positions around a rotation centerline parallel to the axis of the connecting portion 4. The line connecting the center of the connecting portion 4 to the fixed end is defined as the reference line L1. The second swinging device 50a also has a free end, which is always located behind its corresponding reference line L1 in the first rotation direction and forms an acute angle with the reference line L1.

[0082] By adopting the technical solution of this application, the second oscillating component group 50 provides a downward stabilizing force to the connecting part 4. This stabilizing force effectively resists the upward inertial force or impact force generated when the wind force or other external forces suddenly decrease or disappear. This is because, in the wind turbine generator 2, when the wind speed changes suddenly, the fan blade 41 and the generator 2 may generate a large inertial force. The gravity of the second oscillating component group 50 helps the system maintain relative stability and reduces swaying. When the wind force or other external forces change suddenly, the system may sway horizontally due to inertia or external impact. The gravity of the second oscillating component group 50 provides a downward anchor point for the entire wind power generation equipment, reducing this horizontal swaying by increasing the vertical stability of the system.

[0083] Specifically, the second swing device 50a also includes a second swing rod 53, one end of which is a fixed end and the other end is a free end; a second pendulum ball 54 is fixedly connected to the free end. By setting the second pendulum ball 54, the mass of the far end of the second swing device 50a is increased, thereby increasing the compensation effect on the wind power generation device.

[0084] As shown in the figure, the connecting part 4 includes a seat 4a for fixed connection with the output shaft of the generator 2. The seat 4a includes a seat bottom wall 4a-1 located on the radial surface of the connecting part 4 and a seat side wall 45 connected to the seat bottom wall 4a-1. The seat side wall 45 extends axially. The connecting part 4 also includes a fixed seat 5, which is axially pressed against the seat bottom wall 4a-1. The second swing device 50a is located radially between the seat bottom wall 4a-1 and the fixed seat 5, and its fixed end is hinged to the fixed seat 5.

[0085] Specifically, such as Figure 14 As shown, the seat 4a has a U-shaped groove structure, the internal space of which is used to accommodate the fixed seat 5, which is coaxially arranged with the seat 4a. A cover plate 4b is also provided at the top of the seat 4a, and the cover plate 4b is fixedly connected to the seat 4a. The fixed seat 5 is fixedly connected to the bottom wall 4a-1 and the cover plate 4b at both ends in the axial direction. The bottom and top of the fixed seat 5 are fixed to the bottom wall 4a-1 and the cover plate 4b of the connecting part 4, respectively, and the rotor of the generator 2 passes through the bottom wall 4a-1 of the connecting part 4 and is fixedly connected to the bottom of the fixed seat 5. The fixed seat 5 is fixed at the center of the bottom wall 4a-1 on the side wall 45 of the seat, and several equally spaced second swing devices 50a are arranged around the outer side of the fixed seat 5.

[0086] The side wall of the fixed base 5 is hinged to the fixed end of the second swing device 50a. Specifically, the side wall of the fixed base 5 is also provided with a support member 51, on which a second swing shaft 52 is fixed. The second swing shaft 52 extends along the axial direction of the base 4a, serving as the rotation centerline of the second swing device 50a. The bottom of the support member 51 is fixed to the side wall of the fixed base 56. The fixed end of the second swing rod 53 is connected to the second swing shaft 52. The fixed end of the second swing rod 53 flips on the surface of the support member 51 through the second swing shaft 52. The free end of the second swing rod 53 is fixedly connected to the surface of the second pendulum ball 54.

[0087] In this way, the second swing device 50a is able to rotate axially around the fixed base 5 and swing at two extreme positions relative to the reference line L1.

[0088] In some examples, please combine Figure 14 and Figure 19As shown, a limiting structure 46 is fixedly connected to the inner wall surface of the side wall 45 of the seat. The limiting structure 46 includes an annular first stop 461 and a second stop 463, which limit the two extreme positions of the pendulum ball 54. At the two extreme positions, the pendulum ball 54 abuts against the first stop 461 and the second stop 463, respectively. The first stop 461 is located outside the second stop 463; radially, the pendulum ball 54 is located between the first stop 461 and the second stop 463. The first stop 461 provides a track for the sliding of the pendulum ball 54. When the second pendulum rod 53 swings outside the fixed seat 5, the pendulum ball 54 slides within the first stop 461.

[0089] When wind or other external forces act on the fan blade 412, the generated torque is transmitted through the generator 2 to the inside of the connecting part 4, that is, to the fixed base 5. The pendulum ball 54 in the second swing device 50a outside the fixed base 5 slides in the first baffle 461 due to gravity. The rotation of the second swing rod 53 and the second swing shaft 52 balances and compensates for the unstable torque brought by the wind, thereby improving the stability and efficiency of the entire system.

[0090] In other words, the second pendulum 53 can rotate freely to a certain extent, thereby responding to torque changes under the action of wind or other external forces. At this time, as the second pendulum ball 54 slides within the first baffle 461, the second pendulum 53 will rotate around the second swing axis 52. During the rotation, not only is the position of the second pendulum ball 54 adjusted, but also the torque of the entire system is balanced and compensated through the transmission action of the second pendulum 53, thereby effectively reducing the impact of unstable torque caused by wind on the stability of the system.

[0091] By forming a stop on the pendulum ball in its swing direction through the connecting part 4, the swing position of the second pendulum ball 54 can be limited, thereby stopping the second pendulum ball 54 on its swing trajectory, and then transmitting the compensating force of the second pendulum ball 54 to the connecting part 4 through the two stops.

[0092] In a specific example, please see Figures 15-18 As shown, when the pendulum bob 54 is located at the first stop 461, it is at a position with an angle of 55° to the vertical upward direction. At this time, the pendulum bob 54 is subjected to gravity G, centrifugal force F1, the tension F2 of the second pendulum rod 53, and the support force F3 between the pendulum bob 54 and the bottom wall 4a-1 of the first stop 461. Figure 12 As shown in the enlarged view at the top left, gravity causes the pendulum ball 54 to exert a downward pressure G on the bottom surface of the first barrier 461. This pressure G is transmitted to the support member 51 through the second pendulum rod 53, thereby generating a downward stabilizing force on the entire second swing device 50a.

[0093] This stabilizing force effectively resists the upward inertial force or impact force generated when the wind or other external forces suddenly decrease or disappear. In the wind turbine 2, when the wind speed changes suddenly, the blades 41 and the generator 2 may generate a large inertial force, while the gravity of the pendulum 54 helps the system maintain relative stability and reduce swaying. When the wind or other external forces change suddenly, the system may sway horizontally due to inertia or external impact. The gravity of the pendulum 54 provides a downward anchor point for the system, reducing this horizontal swaying by increasing the vertical stability of the system.

[0094] In the preparation for torque balance, the initial torque balance point is: when the second pendulum ball 54 is located at the first baffle 461, it is in a relatively static state. At this time, a relatively stable torque balance relationship is formed between the second pendulum ball 54, the second pendulum rod 53 and the support member 51. This torque balance relationship is the result of the combined action of gravity G, centrifugal force F1, the tension F2 of the second pendulum rod 53 and the support force F3 of the second pendulum ball 54 and the bottom wall 4a-1 of the first baffle 461.

[0095] This equilibrium provides the system with an initial torque balance point. When the wind direction or magnitude begins to change, the system is subjected to new external forces, and the original torque balance is broken. Due to its advantages in gravity and position, the second pendulum 54 is located on the bottom wall 4a-1 of the first baffle 461, with its line of action of gravity pointing directly to the ground. It can sense this change and begin to swing. The swing of the second pendulum 54 is transmitted to the support member 51 through the second pendulum rod 53, thereby adjusting the position and attitude of the entire second swing device 50a. This adjustment is an adaptive response of the system to changes in wind force, aiming to reach a new torque balance state. As the second pendulum 54 swings, it continuously adjusts the angle and distance between the second pendulum rod 53 and the support member 51, changing the direction and magnitude of the torque exerted by the second pendulum rod 53 on the support member 51, thereby changing the torque distribution of the entire second swing device 50a. This torque adjustment process enables the system to respond quickly to changes in wind force, adapt to new wind conditions by redistributing torque, and ultimately, the system can reach a new torque balance state, maintaining the stability and power generation efficiency of the system.

[0096] It should be noted that when the pendulum ball 54 is located at the second barrier wall 463, the pendulum ball 54 is at a position with an angle of 37° to the vertical upward direction. At this time, the pendulum ball 54 is subjected to gravity G, centrifugal force F1, tension F2 of the second pendulum rod 53, and support force F3 between the pendulum ball 54 and the bottom wall 4a-1 of the first barrier wall 461.

[0097] like Figure 12As shown in the enlarged view at the top left, under the action of wind, the fan blade 41 is rotating. When the pendulum ball 54 is at the 37-degree position, it is simultaneously subjected to centrifugal force F1 and gravity G. Centrifugal force F1 helps to slow down the swing speed of the pendulum ball 54, especially when the wind is too strong or the fan blade 41 rotates too fast, the mitigation effect is more significant. At the same time, gravity G still provides a certain degree of stability support. When the pendulum ball 54 is close to the cover plate 4b of the first baffle 461, it can reduce the impact on the system caused by a sudden increase in wind or other external forces. Through its inertial effect and contact friction with the first baffle 461, the pendulum ball 54 can absorb and disperse these impact energies to a certain extent, thereby protecting the entire system from damage. That is, the pendulum ball 54 has inertia because it has mass.

[0098] When the external force changes suddenly, the pendulum ball 54 will maintain its original state of motion, that is, continue to move in the original direction or remain stationary. This inertial effect helps to resist the sudden change of external force. The contact friction between the pendulum ball 54 and the first baffle 461 can consume energy. When the pendulum ball 54 is impacted, it will rub against the first baffle 461. This friction will convert the impact energy into heat energy or other forms of energy and dissipate it, thereby slowing down the movement speed of the pendulum ball 54 and protecting the entire system from damage. At this time, when the pendulum ball 54 swings from the first baffle 461 to the cover plate 4b, its relative to the center of rotation The distance, i.e. the lever arm, will change, resulting in a change in torque. The attitude of the second pendulum 54, i.e. its tilt angle relative to the first barrier 461, will also affect the distribution of torque. When the second pendulum 54 swings, its attitude will change continuously, thereby changing the direction and magnitude of the torque on the second pendulum rod 53 and the support member 51. Its position and attitude provide a new torque balance point for the system. This new torque balance point helps the system adapt to changes in wind or other external forces, maintain the stability and power generation efficiency of the system, and at the same time, the torque adjustment also helps to reduce the vibration and noise of the system and improve the overall performance of the system.

[0099] The following embodiments are analyzed regarding the sliding of pendulum ball 254 within the first barrier 461:

[0100] For example: the mass m of pendulum 254 is 10 kg;

[0101] The radius R of the vertical annular groove of the first baffle 461 is 2m;

[0102] The initial angle between pendulum ball 254 and the vertical upward direction (when located on the bottom wall 4a-1): 55°;

[0103] The final angle between pendulum ball 254 and the vertical upward direction (when located at cover plate 4b): 37°;

[0104] For gravity G: gravitational acceleration g: 9.81 m / s², gravity G = mg = 10 × 9.81 = 98.1 N;

[0105] For centrifugal force Assume that the rotational angular velocity ω of the fan blade 41 is constant, and the pendulum bob 54 rotates together with the fan blade 41 with a linear velocity v = ωr, where r is the instantaneous distance from the pendulum bob 54 to the center of rotation.

[0106] When pendulum ball 254 is located at the bottom wall 4a-1 of the seat... =Rcos(55°);

[0107] When the pendulum ball 254 is located at the cover plate 4b =Rcos(37°);

[0108] centrifugal force = Since the angular velocity ω is constant, the linear velocity v is directly proportional to r, therefore the centrifugal force is inversely proportional to r. This refers to the instantaneous centrifugal force, specifically the centrifugal force of pendulum bob 254 at a certain position.

[0109] =2π

[0110] When the rotation frequency is 1Hz Then the linear velocity of the bottom wall at point 4a-1 is: =ωRcos(55°), the linear velocity of the cover plate at point 4b. ωRcos(37°);

[0111] At this moment, the centrifugal force of pendulum 254 at the bottom wall 4a-1 of the first barrier 461 is: = ;

[0112] Centrifugal force of pendulum ball 254 at the first baffle 461 cover plate 4b: = ;

[0113] Substituting this into the calculation, we get:

[0114] Linear velocity at base wall 4a-1: =2π×2×cos(55°)≈2π×1.176≈7.37m / s;

[0115] Linear velocity at cover plate 4b: 2π×2×cos(37°)≈2π×1.532≈9.61m / s;

[0116] Centrifugal force at base wall 4a-1: = =10× 0× 61N;

[0117] Centrifugal force at cover plate 4b: = =10× 0× 603N.

[0118] The working principle provided by this utility model is as follows: When the wind speed gradually decreases from normal, the pendulum ball 44 in the oscillating component assembly oscillates on the surface of the fan blade 41. Under the combined action of gravity and centrifugal force, the pendulum ball 44 increases the windward area of ​​the fan blade 41 to a certain extent when oscillating, thereby improving the wind energy capture efficiency. Furthermore, by adding gravity compensation at the edge of the fan blade 41, that is, at the edge of the fan blade 41, one side is lighter and the other side is heavier, so that the fan blade 41 can maintain its rotational inertia by gravity when rotating. In this way, when the wind force is insufficient, the rotation of the fan blade 41 can be maintained for a period of time by the inertia of the pendulum ball 44, thereby improving the wind energy capture efficiency.

[0119] In the above embodiments, combined with Figure 14 and Figure 19 The specific structure of the limiting structure 46 is explained below:

[0120] The limiting structure 46 includes two annular vertical walls 462 parallel to each other along the axial direction, one end of which is fixedly connected to the seat side wall 45. A first baffle 461 and a second baffle 463 are provided between the two vertical walls 462. The two ends of the first baffle 461 are fixedly connected to the corresponding vertical walls 462. In this way, the two ends of the first baffle 461 are fixed to the two vertical walls 462, which improves its structural strength.

[0121] As an alternative example, the second baffle 463 includes two wall segments 463a, which are fixed to the vertical wall 462 on the corresponding side; the two wall segments 463a, the first baffle 461 and part of the vertical wall 462 form a receiving cavity 460, and the pendulum ball 54 is always located in the receiving cavity 460.

[0122] In this way, the second baffle 463 can be set with two force points on both sides of the pendulum ball 54, thereby increasing the uniformity of the force on the pendulum ball 54.

[0123] In the various embodiments described above, two second swing member groups 50 are provided; each second swing member group 50 is sequentially distributed along the axial direction of the connecting portion 4. This further increases the gravity compensation effect on the wind power generation equipment. Optionally, the pendulum ball 54 belonging to one second swing member group 50 can form a stop with one wall segment 463a, and the pendulum ball 54 belonging to another second swing member group 50 can form a stop with another wall segment 463a. The surface of the second swing shaft 52 is provided with a collar, so that the pendulum balls 54 on both sides of the second swing shaft 52 slide on the inner sidewall of the first baffle wall 461, and the establishment of the first baffle wall 461 ensures that the pendulum balls 54 will not detach from the first baffle wall 461 when sliding along the surface of the first baffle wall 461.

[0124] In the aforementioned embodiments, the top of the generator 2 is also provided with an energy storage battery for storing electricity. By providing an energy storage battery on the top of the generator 2 to store the electrical energy generated by the solar panel 3 during the power generation process, the power generation is relatively small when the wind speed is low indoors. The establishment of the energy storage battery can store the generated electricity for low-power use such as home lighting and mobile device charging, and to a certain extent, ensures the continuous supply of electrical energy.

[0125] The fan blade 412 is made of fiberglass. The application of fiberglass fan blade 41 greatly reduces the weight of the equipment, making it lighter, easier to install and maintain. The energy storage battery ensures a continuous supply of power, and to a certain extent, it can ensure the stable operation of the equipment even in the case of insufficient wind.

[0126] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A wind power generation device, characterized in that, It includes a connecting part (4) for connecting a fan blade (41), the fan blade (41) being able to rotate along a first direction; the connecting part (4) is provided with a second swinging component group (50), the second swinging component group (50) including a plurality of second swinging devices (50a), the second swinging devices (50a) belonging to the same second swinging component group (50) being evenly distributed around the connecting part (4) in the circumference; The fixed end of the second swing device (50a) is directly or indirectly hinged to the connecting part (4). The second swing device (50a) can swing between two extreme positions around the rotation centerline, which is parallel to the central axis of the connecting part (4). The line connecting the center of the connecting part (4) to the fixed end is defined as the reference line (L1). The second swing device (50a) also has a free end, which is always located behind the reference line (L1) during the first turn and is set at an acute angle to the reference line (L1).

2. The wind power generation equipment according to claim 1, characterized in that, The second swing device (50a) further includes a second swing rod (53), one end of which is the fixed end and the other end is the free end; the free end is fixedly connected to a second pendulum ball (54).

3. The wind power generation equipment according to claim 2, characterized in that, The connecting part (4) is provided with an annular first baffle (461) and a second baffle (463). The first baffle (461) and the second baffle (463) are used to limit the two swing limit positions of the pendulum ball (54). In the radial direction, the first baffle (461) is located outside the second baffle (463) compared to the second baffle (463), and the pendulum ball (54) is located between the first baffle (461) and the second baffle (463).

4. The wind power generation equipment according to claim 3, characterized in that, The connecting part (4) includes a seat (4a) for fixed connection with the output shaft of the generator (2). The seat (4a) includes a seat bottom wall (4a-1) located on the radial surface of the connecting part (4) and a seat side wall (45) connected to the seat bottom wall (4a-1). The seat side wall (45) extends axially. The connecting part (4) further includes a fixed seat (5), which is axially pressed against the bottom wall (4a-1) of the seat. The second swing device (50a) is located radially between the bottom wall (4a-1) of the seat and the fixed seat (5), and the fixed end is hinged to the fixed seat (5).

5. The wind power generation equipment according to claim 4, characterized in that, A limiting structure (46) is fixedly connected to the inner wall surface of the seat side wall (45), the limiting structure (46) including the first baffle (461) and the second baffle (463).

6. The wind power generation equipment according to claim 5, characterized in that, The limiting structure (46) includes two annular vertical walls (462) that are parallel to each other along the axial direction, and one end of the vertical wall (462) is fixedly connected to the seat side wall (45); The first baffle (461) and the second baffle (463) are provided between the two vertical walls (462).

7. The wind power generation equipment according to claim 6, characterized in that, The first baffle (461) is fixedly connected to the vertical wall (462) on the corresponding side at both axial ends.

8. The wind power generation equipment according to claim 6, characterized in that, The second baffle (463) includes two wall segments (463a), which are fixed to the vertical wall (462) on the corresponding side; The two wall segments (463a), the first baffle (461), and part of the vertical wall (462) form a receiving cavity (460), and the pendulum ball (54) is always located within the receiving cavity (460).

9. The wind power generation equipment according to claim 8, characterized in that, Two second swing member groups (50) are provided; each second swing member group (50) is distributed sequentially along the axial direction of the connecting part (4).

10. The wind power generation equipment according to claim 9, characterized in that, The second pendulum ball (54) belonging to one of the second pendulum groups (50) can form a stop with one of the wall segments (463a), and the second pendulum ball (54) belonging to another of the second pendulum groups (50) can form a stop with another of the wall segments (463a).

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