Wind power generation equipment

Abstract

According to the wind power generation equipment, the structure of the power generation equipment is improved, and the electric energy output capacity of the wind power generation equipment used in the low-wind-speed and unstable environment is improved. 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 fan further comprises first swing piece sets, each first swing piece set comprises a plurality of first swing devices, the first swing devices can freely swing by a certain angle relative to the fan blades, each fan blade is provided with a first reference center line penetrating through the center of the connecting part, and the first reference center line is defined in the first rotating direction. The parts, located on the front side of the first reference center line, of the fan blades are front side parts, and the parts, located on the rear side of the first reference center line, of the fan blades are rear side parts; and each first swinging piece group is arranged on the front side part.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, and in particular to a wind power generation device. Background Art

[0002] As a renewable energy power generation device, the basic principle of wind turbines is to use wind power to drive the windmill blades to rotate, and 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, especially in indoor environments. Due to the relatively closed indoor space, the wind speed is usually low and unstable, which makes it difficult for the windmill blades to obtain enough initial power to start the generator. Even if the windmill blades can overcome the starting resistance and start rotating in some cases, the rotation speed of the blades is often maintained at a low level due to the continuous lack of indoor wind speed. This low-speed rotation results in a significant reduction in the mechanical energy transmitted to the generator, which in turn limits the generator's ability to output electrical energy. Summary of the invention

[0003] The purpose of the present invention is to provide a wind power generation equipment, by improving the structure of the power generation equipment, the power output capacity of the wind power generation equipment used in an environment with low wind speed and unstable is improved.

[0004] To achieve the above-mentioned purpose, the present invention provides a wind power generation equipment, which includes a connecting part and a plurality of fan blades fixedly connected to the connecting part, each of the fan blades can rotate along a first direction; it also includes a first swing member group, each first swing member group includes a plurality of first swing devices, the first swing device can freely swing a certain angle relative to the fan blade, each of the fan blades has a first reference center line passing through the center of the connecting part, defined in the first direction, the fan blade located in front of the first reference center line is the front side part, and the fan blade located behind the first reference center line is the rear side part; each of the first swing member groups is arranged on the front side part.

[0005] By adopting the wind power generation equipment in the present application, a first swinging device is provided on the front side of the fan blade, so that during the rotation of the fan blade, the first swinging device can swing with the change of the rotation position of the fan blade, thereby increasing the windward area of ​​the fan blade, improving the wind energy capture efficiency, and through the gravity compensation effect, reducing the impact and vibration of the generator caused by wind speed fluctuations, thereby extending the service life of the equipment; at the same time, the first swinging member group uses gravity to maintain the rotational inertia, so that when the wind force is insufficient, the rotation of the fan blade can be maintained for a period of time by inertia.

[0006] Optionally, in the axial direction of the connecting portion, each of the fan blades has a first surface and a second surface; the first swing member group is provided on at least one of the first surface and the second surface. By providing the first swing member group on one or both of the first surface and the second surface, the wind energy capture efficiency can be improved through the swing of the first swing device, and when the wind force is insufficient, the rotation time of the fan blade through the first swing member group is longer.

[0007] Optionally, the first swing device includes a swing ball 1 and a connecting assembly, the swing ball 1 is hinged to the fan blade through the connecting assembly; at least part of the swing ball 1 of each first swing member group is always located outside the fan blade. In this way, the lever arm can be further increased to enhance the compensation effect of the swing ball on the fan blade, and the wind receiving area can also be further increased.

[0008] Optionally, the connecting assembly includes a first swing rod, one end of which is fixedly connected to the swing ball 1, and the other end of which is hinged to the fan blade. The swing ball 1 and the fan blade are hinged by providing the first swing rod.

[0009] Optionally, the line connecting the positions where the first swing rods are hinged to the fan blades is parallel to the first reference center line. Since the line connecting the positions where the first swing rods are hinged to the fan blades is parallel to the first reference center line, the fan blades can maintain a relatively uniform angle and speed when rotating, thereby helping to generate uniform airflow distribution.

[0010] Optionally, the connection assembly further comprises a mounting plate, the mounting plate is fixedly connected to the fan blade, and the first swing arm is hinged to a side of the mounting plate away from the fan blade, so that the first swing arm can be supported at a certain height by the mounting plate to avoid interference with the surface of the fan blade during the swinging process.

[0011] Optionally, the first swing devices of each first swing member group are arranged in sequence along the extension direction of the first reference center line, thereby avoiding mutual interference between the swing balls and increasing the compensation effect of the first swing member group.

[0012] Optionally, the fan blade is further provided with a plurality of first limiting protrusions for limiting the limit position of the swing ball 1, and the extension direction of each of the first limiting protrusions is perpendicular to the first reference center line. Thus, when the first limiting protrusions abut against the swinging member, the first limiting protrusions can accurately limit the swing range of the swing ball 1, preventing it from swinging excessively under the action of wind force, thereby preventing the fan blade structure from being damaged due to excessive deformation.

[0013] Optionally, the swing ball is disposed between two adjacent first limiting protrusions, which is defined as a type of swing ball member;

[0014] Each of the swing ball members of the type has a first limit position and a second limit position, and in the extension direction of the first reference center line, the first limit position is farther away from the connecting portion than the second limit position;

[0015] At the first extreme position, the first swing rod of each of the swing ball components of the first type abuts against one of the two adjacent first limiting protrusions. At the second extreme position, the first swing rod of each of the swing ball components of the first type abuts against the other one.

[0016] Thereby, the swing angle of a type of swing ball member can be limited, thereby ensuring a reasonable compensation effect on the fan blades.

[0017] Optionally, the fan blade is further provided with a plurality of first limiting protrusions, and in the extension direction of the first reference midline, the swing ball component is also provided on the outer side of the first limiting protrusion located on the outermost side of the fan blade, and the swing ball component 1 is defined as a second type of swing ball component;

[0018] The second type of swing ball member has a third limit position and a fourth limit position;

[0019] When in the third extreme position, the first swing rod of the second type of swing ball member abuts against the first limiting protrusion;

[0020] The fan blade is further provided with a second limiting protrusion, and at the fourth limit position, the first swing rod of the second type of swing ball member abuts against the second limiting protrusion;

[0021] The angle at which the second type of swing ball member rotates from the third limit position to the fourth limit position is an obtuse angle or 180°.

[0022] Thereby, the swing angle of the second type of swing ball can be limited, thereby ensuring a reasonable compensation effect on the fan blades.

[0023] Other features and advantages of the present specification will become apparent from the following detailed description of exemplary embodiments of the present specification with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0025] Figure 1 A schematic diagram of the overall structure of the wind power generation equipment provided by the present invention;

[0026] Figure 2 A right side structural schematic diagram of the entire wind power generation equipment provided by the present invention;

[0027] Figure 3 It is a structural schematic diagram of the fan blade part;

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

[0029] Figure 5 It is a front view of a partial structure of a wind power generation device;

[0030] Figure 6 for Figure 5 The 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 The enlarged view of point D in the middle;

[0033] Fig. 9 for Figure 5 Enlarged view of point E in the middle;

[0034] Fig.10 for Figure 5 The enlarged view of F in the middle;

[0035] Fig.11 is a structural schematic diagram of the connecting part;

[0036] Fig.12 yes Fig.11 Enlarged view of G in the middle;

[0037] Fig.13 It is a partial structural schematic diagram of the connecting part;

[0038] Fig.14 It is a schematic diagram of the cross-sectional structure of a part of a wind power generation equipment;

[0039] Fig.15 yes Fig.11 A front view of

[0040] Fig.16 yes Fig.15 The enlarged view of the H in the middle;

[0041] Fig.17 yes Fig.15 The enlarged view of point I in the middle;

[0042] Fig.18 yes Fig.15 The enlarged view of J in the middle;

[0043] Fig.19 yes Fig.14 A partial enlarged schematic diagram of the structure.

[0044] Reference numerals:

[0045] 1-support column; 11-base; 2-generator; 21-heat sink; 3-solar panel; 4-connecting part; 4a-seat; 4a-1-seat bottom wall; 4a-2-seat side wall; 4b-cover plate; 41-fan blade; 411-first limit convex; 412-front side; 413-rear side; 414-convex ridge; 42-mounting plate; 421-first swing axis; 43-first swing rod; 44-swing ball 1; 45-seat side wall (repeated item, consider whether to modify or retain); 46-limiting structure; 461- First retaining wall; 460-accommodating chamber; 462-vertical wall; 463-second retaining wall; 463a-wall section; 5-fixed seat; 51-support member; 52-second swing axis; 53-second swing rod; 54-swing ball second; L1-reference line; s1-first reference center line; s2-second reference center line; 40-first swing member group; 44a-a type of swing ball member; 44a-1-first swing ball; 44b-a type of swing ball member; 44b-1-second swing ball; 50-second swing member group; 50a-second swing device. DETAILED DESCRIPTION

[0046] The present invention provides a wind power generation equipment. In the embodiments of the present application, the structure of the power generation equipment is improved to improve the power output capacity of the wind power generation equipment used in an environment with low wind speed and unstable conditions.

[0047] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0048] Relational terms such as “first” and “second” and the like are merely used to distinguish one component from another having the same name, but do not necessarily require or imply any such actual relationship or order between these components.

[0049] like Figure 1-Figure 19 As shown, Figure 1 A schematic diagram of the overall structure of the wind power generation equipment provided by the present invention; Figure 2 A right side structural schematic diagram of the entire wind power generation equipment provided by the present invention; Figure 3 It is a structural schematic diagram of the fan blade part; Figure 4 for Figure 3 The enlarged view of point A in the middle; Figure 5 It is a front view of a partial structure of a wind power generation device; Figure 6 for Figure 5 The 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 The enlarged view of point D in the middle; Fig. 9 for Figure 5 Enlarged view of point E in the middle; Fig.10 for Figure 5 The enlarged view of F in the middle; Fig.11 is a structural schematic diagram of the connecting part; Fig.12 yes Fig.11 Enlarged view of G in the middle; Fig.13 It is a partial structural schematic diagram of the connecting part; Fig.14 It is a schematic diagram of the cross-sectional structure of a part of a wind power generation equipment; Fig.15 yes Fig.11 A front view of Fig.16 yes Fig.15 The enlarged view of the H in the middle; Fig.17 yes Fig.15 The enlarged view of point I in the middle; Fig.18 yes Fig.15 The enlarged view of J in the middle; Fig.19 yes Fig.14 A partial enlarged schematic diagram of the structure.

[0050] To achieve the above object, the present invention provides a wind power generation device, which includes a connecting portion 4 and a plurality of blades 41 fixedly connected to the connecting portion 4, which are used as a connecting platform for the blades 41. The blades 41 are evenly distributed along the circumference of the connecting portion 4. The blades 41 can rotate along a first direction, such as Figures 1 to 5 In the state shown in the figure, the first direction of rotation is the clockwise direction in the figure. In addition, the wind power generation equipment also includes a generator 2, the output end of the generator 2 is transmission-connected or directly fixedly connected to the connecting part 4, and after the connecting part 4 is rotated by the fan blades 41, the output end of the generator 2 is driven to rotate and thus the mechanical energy is converted into electrical energy.

[0051] The wind power generation equipment also includes a first swing member group 40, each of which includes a plurality of first swing devices, and the first swing device can swing freely at a certain angle relative to the blade 41. Each blade 41 has a first reference center line s1 passing through the center of the connecting portion 4, and is defined as a first turn. The front side 412 of the blade 41 located in front of the first reference center line s1 is the front side part, and the rear side 413 located in the rear side of the first reference center line s1 is the rear side part; each first swing member group 40 is arranged on the front side part 412. Of course, it can be understood that the front side part 412 is the right side part of the blade 41 in the example shown in the figure, and the rear side part 413 is the left side part. If the first turn is a counterclockwise turn, the front side part 412 is the left side part of the blade 41 in the figure, and the rear side part 413 is the right side part of the blade 41, and those skilled in the art can select a suitable installation position of the first swing member group 40 on the blade 41 according to the direction of the parts.

[0052] Specifically, each first swing device includes a swing ball 44 and a connecting assembly, and the swing ball 44 is hinged to the front side 412 hinged to the fan blade 41 through 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 swing ball 44, and the other end is hinged to the fan blade 41. The swing ball 44 and the fan blade 41 are hinged by setting the first swing rod 43.

[0053] The mounting plate 42 is fixedly connected to the fan blade 41, and the first swing arm 43 is hinged to the side of the mounting plate 42 away from the fan blade 41. Specifically, the connecting assembly also includes a swing shaft, which passes through the mounting plate 42 and the fan blade 41 along the thickness direction of the fan blade 41 and forms a fixed connection between the two. This can be a threaded connection, a riveted connection or a welding connection. Part of the swing shaft extends to the surface of the fan blade 41 along the thickness direction of the fan blade 41. The first swing arm 43 is provided with a mounting hole, and part of the swing shaft passes through the mounting hole and forms a limit to the first swing arm 43 in its axial direction. In this way, the first swing arm 43 can rotate around the swing shaft.

[0054] Alternatively, the mounting plate 42 is fixed to the fan blade 41 by bonding, welding or threading, and the swing shaft is threadedly connected to the mounting plate 42. Thus, the first swing rod 43 can be supported at a certain height by the mounting plate 42 to prevent the first swing rod 43 from interfering with the surface of the fan blade 41 during the swinging process. In the above-mentioned 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.

[0055] 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 is pressed against the side of the mounting plate 42 away from the fan blade 41 along the axial direction of the swing shaft, and the second stop protrusion is spaced apart from the first stop protrusion. The first rocker 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 rocker rod 43 between the first stop protrusion and the second stop protrusion.

[0056] In the aforementioned embodiment, each blade 41 has a first surface and a second surface in the axial direction of the connecting portion 4. That is, the blade 41 has a first surface and a second surface that are arranged opposite to each other in the thickness direction. A first swing member group 40 is provided on at least one of the first surface and the second surface. The first swing member group 40 is provided on the portion of the first surface located at the front side portion 412. Alternatively, the first swing member group 40 is provided on the portion of the second surface located at the front side portion 412. Alternatively, the first swing member group 40 is provided on both the first surface and the second surface located at the front side portion 412. In this way, two swing components are provided on each individual blade 41.

[0057] By setting the first swing member group 40 on one or both of the first surface and the second surface, the wind energy capture efficiency can be improved through the swing of the first swing device. At the same time, when the wind force is insufficient, the rotation time of the fan blades 41 through the first swing member group 40 is longer.

[0058] 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 wall of the mounting plate 42 through the swing shaft, and the other end of the first swing rod 43 is fixedly connected to the first surface of the swing ball 1 44. When the fan blade 41 rotates on the top of the mounting frame, the swing ball 1 44 swings on the first surface of the fan blade 41.

[0059] As an optional method, the line connecting the positions where each first swing rod 43 is hinged to the fan blade 41 is parallel to the first reference center line s1. Since the line connecting the positions where the first swing rod 43 is hinged to the fan blade 41 is parallel to the first reference center line s1, the fan blade 41 can maintain a relatively uniform angle and speed when rotating, thereby helping to generate uniform airflow distribution.

[0060] Optionally, the fan blade 41 is further provided with a plurality of first limiting protrusions 411 for limiting the extreme position of the swing ball 1 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 swinging member, the first limiting protrusion 411 can accurately limit the swing range of the swing ball 1 44, preventing it from swinging excessively under the action of wind force, thereby preventing the fan blade 41 structure from being damaged due to excessive deformation.

[0061] In the example shown in the figure, a swing ball 44 is provided between two adjacent first limiting protrusions 411, which is defined as a type of swing ball member 44a. The first limiting protrusion 411 is a plate-like structure, fixedly disposed on the first surface and the second surface of the fan blade 41, and 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. The mounting plate 42 is located between the two adjacent first limiting protrusions 411. And each mounting plate 42 is located at the edge of the front side portion 412. In this way, the first swing member group 40 can remain stable when the fan blade 41 rotates, avoiding mutual interference or collision, and at the same time ensuring that the swing ball 44 can swing smoothly on the surface of the fan blade 41.

[0062] like Figure 3 and Figure 4As shown, in a specific example, a convex ridge portion 414 is provided on the surface of the fan blade 41, and the first reference center line s1 passes through the center of the convex ridge portion 414, and the convex ridge portion 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 convex ridge portion 414, thereby further improving the connection strength between the first limiting protrusion 411 and the fan blade 41.

[0063] Each of the first-class swing ball components 44a has a first limit position and a second limit position. In the extension direction of the first reference center line s1, the first limit position is farther away from the connecting portion 4 than the second limit position. In the first limit position, the first swing rod 43 of each of the first-class swing ball components 44a abuts against one of the two adjacent first limiting protrusions 411. In the second limit position, the first swing rod 43 of each of the first-class swing ball components 44a abuts against the other one.

[0064] Continue to refer to Figure 3 to Figure 4 As shown, as an optional example, the swing angle of a type of swing ball member 44a from the first limit position to the second limit position is 45°-70°. More preferably, it is 60°. For example, the axis parallel to the first limit protrusion 411 and passing through the first swing axis 421 is defined as the second reference center line s2, and the swing amplitude of the swing ball 1 44 of the type of swing ball member 44a is located above and below the second reference center line s2, and the included angle between the swing angle of the swing ball 1 44 and the second reference center line s2 is 30°.

[0065] Thereby, the swing angle of the swing ball 44 a can be limited, thereby ensuring a reasonable compensation effect on the fan blade 41 .

[0066] In other embodiments, a swing ball is also provided on the outer side of the first limiting protrusion 411 located at the outermost side of the fan blade 41, and the swing ball 44 is defined as a second type of swing ball 44b. The "outside" here refers to the radial direction of the connecting portion 4. In the radial direction of the connecting portion 4, the side pointing to the connecting portion 4 is "inside", and the opposite is "outside". The second type of swing ball 44b has a third extreme position and a fourth extreme position. In the third extreme position, the first swing rod 43 of the second type of swing 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 swing rod 43 of the second type of swing ball 44b abuts against the second limiting protrusion. Here, the convex ridge portion 414 can be used as the second limiting protrusion, and of course, an additional limiting structure 46 can be provided, both of which fall within the scope of protection of this patent.

[0067] References Figures 5 to 10In the enlarged view of FIG. C, the swing angle of the swing ball 1 44 of the second swing ball member 44b is 180 degrees. The swing amplitude of the swing ball 1 44 of the second swing ball member 44b is: from the position where the swing ball 1 44 of the second swing ball member 44b forms an angle of 45° with the vertical downward direction to the position where the swing ball 1 44 of the second swing ball member 44b forms an angle of 225° with the vertical downward direction, and the swing amplitude swings from one side of the first limiting protrusion 411 to the position close to or exceeding the first reference center line s1;

[0068] Among them, in the third extreme position, the angle between the swing ball 1 44 of the second type of swing ball component 44b and the first reference midline s1 is 45°; in the third extreme position, the angle between the swing ball 1 44 of the second type of swing ball component 44b and the first reference midline s1 on the same side is 225°.

[0069] Of course, in addition to the 180° angle at which the second type swing ball 44b rotates from the third limit position to the fourth limit position, other obtuse angle values ​​may also be used, and those skilled in the art may select them as needed. Thus, the swing angle of the second type swing ball 44b can be limited, thereby ensuring a reasonable compensation effect on the fan blade 41.

[0070] In the above-mentioned embodiments, at least part of the swing ball 1 44 of each first swing member group 40 is always located outside the fan blade 41. Here, "outside" refers to the part of the swing ball 1 44 located outside the fan blade 41 in the first direction. In this way, the lever arm can be further increased to enhance the compensating effect of the swing ball 1 44 on the fan blade 41, and the wind receiving area can also be further increased.

[0071] In other examples, the first swing devices of each first swing member group 40 are arranged in sequence along the extension direction of the first reference center line s1, thereby avoiding mutual interference between the swing balls and increasing the compensation effect of the first swing member group 40.

[0072] refer to Figures 6 to 8 , which is a schematic diagram of force analysis of the rotational position of the swing ball 1 44 of different first-class swing ball parts 44a and second-class swing ball parts 44b. For the convenience of description, the swing ball 1 44 of the first-class swing ball part 44a is defined as the first swing ball 44a-1, and the swing ball 1 44 of the second-class swing ball part 44b is defined as the second swing ball 44b-1.

[0073] When the fan blade 41 rotates to the lower left position in the figure, the first swing ball 44a-1 is subjected to the downward gravity G, the pulling force F1 from the first swing rod 43, the force F3 from the first limit protrusion 411, and the centrifugal force F2. In this state, under the joint action of the pulling force F1 of the first swing rod 43, the force F3 from the first limit protrusion 411, and the centrifugal force F2, the first swing ball 44a-1 can play a certain rotation effect on the fan blade 41. Specifically, at this time, the gravity G and the pulling force F1 of the first swing rod 43 form an acute angle, the force F3 of the first limit protrusion 411 forms a right angle with the gravity G, and points to the two sides of the swing direction of the first swing rod 43 respectively, and the centrifugal force F2 is between the force F3 of the first limit protrusion 411 and the gravity G. At this time, the centrifugal force points to the lower left side.

[0074] At this time, since the second swing ball 44b-1 will not contact the first limiting protrusion 411, the second swing ball 44b-1 is only affected by the centrifugal force F2 in addition to the gravity G and the pulling force F1 from the first swing rod 43. In this state, F2 is parallel to the first reference center line s1 and points to the outside of the fan blade 41.

[0075] When the fan blade 41 rotates to the part directly above, the first swing ball 44a-1 is subjected to the downward gravity G, the pulling force F1 from the first swing rod 43, the force F3 from the first limiting protrusion 411 and the centrifugal force F2. In this state, the direction of the centrifugal force F2 gradually changes from the lower left side to the upward side, and F3 now points to the lower right side due to the change in the position of the fan blade 41.

[0076] At this time, the centrifugal force F2, the pulling force F1 and the gravity G of the second swing ball 44b-1 are located on the same straight line and point in opposite directions.

[0077] When the fan blade 41 rotates to the lower right side, an acute angle is gradually formed between the centrifugal force F2 of the second swing ball 44b-1 and the gravity G.

[0078] By adopting the wind power generation equipment in the present application, a first swinging device is provided on the front side 412 of the fan blade 41, so that during the rotation of the fan blade 41, the first swinging 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 through the gravity compensation effect, reducing the impact and vibration of the generator 2 caused by wind speed fluctuations, thereby extending the service life of the equipment; at the same time, the first swinging member group 40 uses gravity to maintain the rotational inertia, so that when the wind force is insufficient, the rotation of the fan blade 41 can be maintained for a period of time by inertia.

[0079] refer to Figures 1 to 3As shown, in each of the above-mentioned embodiments, the wind power generation equipment also includes a support column 1, and a base 11 is 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 sink 21 for heat dissipation of the generator 2 is provided on the outside of the generator 2. The generator 2 is located at the top of the support column 1 and is responsible for converting wind energy into electrical energy. The heat sink 21 on the outside can effectively dissipate the heat generated during the operation of the generator 2 to prevent the temperature inside the generator 2 from being too high and affecting the normal operation of the generator 2. In addition, a solar panel 3 for power supply is fixed to the top of the generator 2. The solar panel 3 can absorb solar energy and convert it into electrical energy when there is sufficient light, providing additional power support for the generator 2, which helps to ensure the continuous operation and power supply of the equipment when the wind speed is low or the wind energy is insufficient at night.

[0080] In each of the above embodiments, see Figure 11-Figure 19 As shown, the connection part 4 of the present application is provided with a second swing member group 50, and the second swing member group 50 includes a plurality of second swing devices 50a, and the second swing devices 50a belonging to the same second swing member group 50 are evenly distributed around the circumference of the connection part 4. The fixed end of the second swing device 50a is directly or indirectly hinged to the connection part 4, and can swing between two extreme positions around the rotation center line parallel to the axial direction of the connection part 4. The line from the center of the circle of the connection part 4 to the fixed end is defined as the reference line L1, and the second swing device 50a also has a free end, which is always located at the rear side of the corresponding reference line L1 in the first turn, and forms an acute angle with the reference line L1.

[0081] By adopting the technical solution of the present application, the second swing member group 50 is provided to provide a downward stabilizing force to the connecting portion 4, and this stabilizing force effectively resists the upward inertia force or impact force generated when the wind force or other external force suddenly decreases or disappears. This is because, in the wind turbine 2, when the wind speed suddenly changes, the blades 41 and the generator 2 may generate a large inertia force. The gravity of the second swing member group 50 can help the system remain relatively stable and reduce shaking. When the wind force or other external force suddenly changes, the system may produce horizontal shaking due to inertia or external force impact. The gravity of the second swing member group 50 provides a downward anchor point for the wind power generation equipment as a whole, and reduces this horizontal shaking by increasing the vertical stability of the system.

[0082] Specifically, the second swing device 50a further includes a second swing rod 53, one end of which is a fixed end and the other end is a free end; the free end is fixedly connected with a second swing ball 54. The second swing ball 54 is provided to increase the mass of the far end of the second swing device 50a, thereby increasing the compensation effect on the wind power generation device.

[0083] As shown in the figure, the connecting part 4 includes a seat portion 4a for fixedly connecting to the output shaft of the generator 2, the seat portion 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, and the seat side wall 45 extends axially; the connecting part 4 also includes a fixed seat 5, the fixed seat 5 is axially pressed against the seat bottom wall 4a-1, the second swinging device 50a is radially located between the seat bottom wall 4a-1 and the fixed seat 5, and the fixed end is hinged to the fixed seat 5.

[0084] Specifically, if Fig.14 As shown, the seat 4a is a U-shaped groove structure, and the space inside is used to accommodate the fixed seat 5, which is coaxially arranged with the seat 4a. The top of the seat 4a is also covered with a cover plate 4b, which is fixedly connected to the seat 4a, and the fixed seat 5 is fixedly connected to the seat bottom wall 4a-1 and the cover plate 4b at both ends of the axial direction. The bottom and top of the fixed seat 5 are respectively fixed to the seat bottom wall 4a-1 and the cover plate 4b of the connecting part 4, and the rotor of the generator 2 passes through the seat 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 seat bottom wall 4a-1 of the seat side wall 45, and a plurality of second swing devices 50a distributed equidistantly are arranged around the outer side of the fixed seat 5.

[0085] The side wall of the fixed seat 5 is hinged with the fixed end of the second swing device 50a. Specifically, the side wall of the fixed seat 5 is also provided with a support member 51, on which a second swing shaft 52 is fixedly provided. The second swing shaft 52 extends along the axial direction of the seat portion 4a and serves as the rotation center line of the second swing device 50a. The bottom of the support member 51 is fixed to the side wall of the fixed seat 56, and 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 is turned over on the surface of the support member 51 through the second swing shaft 52, and the free end of the second swing rod 53 is fixedly connected to the surface of the second swing ball 54.

[0086] In this way, the second swing device 50a is able to rotate around the axial direction of the fixing seat 5 and swing between two extreme positions relative to the reference line L1.

[0087] In some examples, please combine Fig.14 and Fig.19As shown in the figure, the inner wall surface of the seat side wall 45 is fixedly connected with a limiting structure 46. The limiting structure 46 includes an annular first retaining wall 461 and a second retaining wall 463, which are used to limit the two extreme positions of the swing ball 54. The swing ball 54 is respectively against the first retaining wall 461 and the second retaining wall 463 at the two extreme positions. The first retaining wall 461 is located on the outside of the second retaining wall 463 compared with the second retaining wall 463; in the radial direction, the swing ball 54 is located between the first retaining wall 461 and the second retaining wall 463. The first retaining wall 461 provides a track for the sliding of the swing ball 54. When the second swing rod 53 swings on the outside of the fixed seat 5, the swing ball 54 slides in the first retaining wall 461.

[0088] When wind or other external forces act on the fan blades 412, the generated torque acts on the inside of the connecting part 4, that is, on the fixed seat 5, through the generator 2. The swing ball 54 in the second swing device 50a outside the fixed seat 5 slides in the first retaining wall 461 due to the action of gravity. The unstable torque caused by the wind is balanced and compensated by the rotation of the second swing rod 53 and the second swing shaft 52, thereby improving the stability and efficiency of the entire system.

[0089] That is to say, the second swing arm 53 can rotate freely to a certain extent, so as to respond to the torque change under the action of wind or other external forces. At this time, as the swing ball 2 54 slides in the first retaining wall 461, the second swing arm 53 will rotate around the second swing axis 52. During the rotation, not only the position of the swing ball 2 54 is adjusted, but also the torque of the entire system is balanced and compensated through the transmission action of the second swing arm 53, thereby effectively reducing the influence of the unstable torque brought by the wind on the stability of the system.

[0090] By forming a stop for the swinging ball in its swinging direction by the connecting part 4, the swinging position of the second swinging ball 54 can be limited, thereby stopping the second swinging ball 54 on its swinging trajectory, and then transmitting the compensation force of the second swinging ball 54 to the connecting part 4 through the two retaining walls.

[0091] For a specific example, see Figure 15-18 As shown in the figure, when the swing ball 54 is located at the first retaining wall 461, the swing ball 54 is at an angle of 55° with the vertical upward direction. At this time, the swing ball 54 is subjected to gravity G, centrifugal force F1, the pulling force F2 of the second swing rod 53, and the supporting force F3 between the swing ball 54 and the bottom wall 4a-1 of the first retaining wall 461, as shown in FIG. Fig.12 As shown in the enlarged view on the upper left, at this time, the gravity causes the second swing ball 54 to generate a downward pressure G on the bottom surface of the first retaining wall 461. This pressure G is transmitted to the support member 51 through the second swing rod 53, thereby generating a downward stabilizing force on the entire second swing device 50a.

[0092] This stabilizing force effectively resists the upward inertia force or impact force generated when the wind force or other external force suddenly decreases or disappears. In the wind turbine 2, when the wind speed suddenly changes, the fan blades 41 and the generator 2 may generate a large inertia force, and the gravity of the pendulum ball 2 54 can help the system remain relatively stable and reduce shaking. When the wind force or other external force suddenly changes, the system may produce horizontal shaking due to inertia or external force impact. The gravity of the pendulum ball 2 54 provides a downward anchor point for the system, which reduces this horizontal shaking by increasing the vertical stability of the system.

[0093] In the preparation for torque balance, the initial torque balance point is: when the pendulum ball 54 is located at the first retaining wall 461, it is in a relatively static state. At this time, a relatively stable torque balance relationship is formed between the pendulum ball 54, the second pendulum rod 53 and the support member 51. This torque balance relationship is based on the combined effect of gravity G, centrifugal force F1, the tension F2 of the second pendulum rod 53, and the supporting force F3 of the pendulum ball 54 and the bottom wall 4a-1 of the first retaining wall 461.

[0094] This equilibrium relationship provides an initial torque equilibrium point for the system. When the direction or magnitude of the wind begins to change, the system will be affected by a new external force, and the original torque equilibrium relationship will be broken. Due to its advantages in gravity and position, the pendulum ball 54 is located on the bottom wall 4a-1 of the first retaining wall 461, and its gravity line directly points to the ground. It can sense this change and begin to swing. The swing of the pendulum ball 54 is transmitted to the support member 51 through the second swing rod 53, thereby adjusting the position and posture of the entire second swing device 50a. This adjustment is an adaptive response of the system to wind changes, aiming to re-achieve a new torque equilibrium state. As the pendulum ball 54 swings, it continuously adjusts the angle and distance between the second swing rod 53 and the support member 51, changes the direction and magnitude of the torque of the second swing rod 53 on the support member 51, and thus changes the torque distribution of the entire second swing device 50a. This torque adjustment process enables the system to respond quickly to wind changes and adapt to new wind conditions by redistributing torque. Finally, the system can re-achieve a new torque equilibrium state to maintain the stability and power generation efficiency of the system.

[0095] It should be noted that when the pendulum ball 54 is located at the second retaining wall 463, the pendulum ball 54 is at a position with an angle of 37° with the vertical upward direction. At this time, the pendulum ball 54 is subjected to gravity G, centrifugal force F1, the pulling force F2 of the second swing rod 53 and the supporting force F3 between the pendulum ball 54 and the bottom wall 4a-1 of the first retaining wall 461.

[0096] like Fig.12As shown in the enlarged view on the upper left, under the action of wind, the fan blades 41 are rotating at this time, and the pendulum ball 54 is affected by the centrifugal force F1 and the gravity G at the 37 degree position. The centrifugal force F1 helps to slow down the swinging speed of the pendulum ball 54, especially when the wind is too strong or the fan blades 41 rotate too fast. The mitigation effect is more significant. At the same time, the gravity G still provides a certain stability support. When the pendulum ball 54 is close to the position of the cover plate portion 4b of the first baffle wall 461, it can mitigate the impact on the system caused by the sudden increase of wind or other external forces. Through its inertia effect and contact friction with the first baffle wall 461, the pendulum ball 54 can absorb and disperse the impact energy to a certain extent, thereby protecting the entire system from damage. That is, the pendulum ball 54 has inertia because it has mass.

[0097] 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 sudden changes in external force. The contact friction between the pendulum ball 54 and the first retaining wall 461 can consume energy. When the pendulum ball 54 is impacted, it will rub against the first retaining wall 461. This friction will convert the impact energy into heat energy or other forms of energy dissipation, 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 retaining wall 461 to the cover plate portion 4b, it is relative to the rotation center. The distance between the two ends of the swing ball 54 and the support member 51 will change, that is, the lever arm will change, resulting in a change in the torque. The posture of the second swing ball 54, that is, its inclination angle relative to the first retaining wall 461, will also affect the distribution of the torque. When the second swing ball 54 swings, its posture will continue to change, thereby changing the direction and magnitude of the torque acting on the second swing rod 53 and the support member 51. Its position and posture provide a new torque balance point for the system. This new torque balance point helps the system adapt to changes in wind force or other external forces and maintain the stability and power generation efficiency of the system. At the same time, the adjustment of the torque also helps to reduce the vibration and noise of the system and improve the overall performance of the system.

[0098] Regarding the sliding of the swing ball 54 in the first retaining wall 461, the following embodiment analysis is provided:

[0099] For example: the mass m of pendulum ball 2 54: 10kg;

[0100] The radius R of the vertical annular groove of the first retaining wall 461 is 2 m;

[0101] The initial angle between the second swing ball 54 and the vertical upward direction (when located on the bottom wall 4a-1 of the seat): 55°;

[0102] The final angle between the swing ball 54 and the vertical upward direction (when located at the cover plate portion 4b): 37°;

[0103] For gravity G: Gravitational acceleration g: 9.81m / s2 , gravity G = mg = 10 × 9.81 = 98.1 N;

[0104] For the centrifugal force F1: Assume that the rotational angular velocity ω of the blade 41 is a constant value, and the pendulum ball 54 rotates with the blade 41, and the linear velocity v=ωr, where r is the instantaneous distance from the pendulum ball 54 to the rotation center;

[0105] When the pendulum ball 2 54 is located at the bottom wall 4a-1 of the seat, r1 = Rcos(55°);

[0106] When the pendulum ball 2 54 is located at the cover plate portion 4b, r2 = Rcos(37°);

[0107] Centrifugal force Since the angular velocity ω is constant, the linear velocity v is proportional to r, so the centrifugal force is inversely proportional to r, where F 瞬 is the instantaneous centrifugal force, i.e., the centrifugal force when the pendulum ball 54 is at a certain position;

[0108] Where, ω = 2π × (rotation frequency)

[0109] When the rotation frequency is 1 Hz, ω = 2πrad / s, the linear velocity of the seat bottom wall 4a-1 is: v1 = ωRcos (55°), and the linear velocity of the cover plate part 4b is v2 = ωRcos (37°);

[0110] At this time, the centrifugal force of the swing ball 54 when the first retaining wall 461 is seated on the bottom wall 4a-1 is:

[0111] The centrifugal force of the swing ball 54 when the first retaining wall 461 covers the plate portion 4b:

[0112] Now bring it into the calculation and get:

[0113] Linear velocity when the seat bottom wall 4a-1: v1 = 2π × 2 × cos (55°) ≈ 2π × 1.176 ≈ 7.37 m / s;

[0114] Linear velocity when covering plate portion 4b: v2 = 2π × 2 × cos (37°) ≈ 2π × 1.532 ≈ 9.61 m / s;

[0115] Centrifugal force when the seat bottom wall 4a-1:

[0116] Centrifugal force when covering plate 4b:

[0117] The working principle provided by the present invention is as follows: when the wind speed gradually decreases from normal, the swing ball 44 in the swing member group swings on the surface of the fan blade 41, and is affected by the combined effect of gravity and centrifugal force. When the swing ball 44 swings, the windward area of ​​the fan blade 41 is increased to a certain extent, thereby improving the wind energy capture efficiency. In addition, 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 uses gravity to maintain the rotational inertia 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 swing ball 44, thereby improving the wind capture efficiency.

[0118] In the above-mentioned embodiments, Fig.14 and Fig.19 , the specific structure of the limiting structure 46 is described:

[0119] The limiting structure 46 includes two annular vertical walls 462 parallel to each other in the axial direction, one end of the vertical wall 462 is fixedly connected to the seat side wall 45; a first retaining wall 461 and a second retaining wall 463 are arranged between the two vertical walls 462. The two axial ends of the first retaining wall 461 are fixedly connected to the vertical walls 462 on the corresponding side. In this way, the two ends of the first retaining wall 461 are fixed to the two vertical walls 462, thereby improving its structural strength.

[0120] As an optional example, the second retaining wall 463 includes two wall segments 463a, and the two wall segments 463a are fixed to the vertical wall 462 on the corresponding side; the two wall segments 463a, the first retaining wall 461 and part of the vertical wall 462 form an accommodating cavity 460, and the pendulum ball 54 is always located in the accommodating cavity 460.

[0121] In this way, the second retaining wall 463 can be provided with two force points on both sides of the second pendulum ball 54 , thereby increasing the force uniformity of the second pendulum ball 54 .

[0122] In each of the above-mentioned embodiments, 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 second swing ball 54 belonging to one second swing member group 50 can form a stopper with one wall section 463a, and the second swing ball 54 belonging to another second swing member group 50 can form a stopper with another wall section 463a. The surface of the second swing shaft 52 is provided with a collar, so that the second swing balls 54 on both sides of the second swing shaft 52 slide on the inner side wall of the first retaining wall 461, and the establishment of the first retaining wall 461 ensures that the second swing ball 54 will not separate from the first retaining wall 461 when sliding along the surface of the first retaining wall 461.

[0123] In the aforementioned embodiments, an energy storage battery for storing electricity is also provided on the top of the generator 2; by providing an energy storage battery on the top of the generator 2 to store the electric energy generated by the solar panel 3 during the power generation process, when the indoor wind speed is low, the power generation power is small, and the establishment of the energy storage battery can store the power generation for low-power use such as home lighting and charging of mobile devices, thereby ensuring a continuous supply of electric energy to a certain extent.

[0124] The fan blades 412 are made of fiberglass; the use of fiberglass fan blades 41 greatly reduces the weight of the equipment, making the equipment lighter, easier to install and maintain, and the setting of the energy storage battery ensures a continuous supply of electricity, and to a certain extent, can ensure stable operation of the equipment even in insufficient wind conditions.

[0125] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A wind power generation device, characterized in that: It comprises a connecting portion (4) and a plurality of blades (41) fixedly connected to the connecting portion (4), wherein each of the blades (41) is capable of rotating along a first direction; It also includes a first swing member group (40), each first swing member group (40) includes a plurality of first swing devices, the first swing devices can swing freely at a certain angle relative to the fan blade (41), each of the fan blades (41) has a first reference center line (s1) passing through the center of the connecting portion (4), and is defined at the first turning point. The fan blade (41) is located on the front side of the first reference center line (s1) as a front side portion (412), and is located on the rear side of the first reference center line (s1) as a rear side portion (413); each of the first swing member groups (40) is arranged on the front side portion (412).

2. The wind power generation equipment according to claim 1, characterized in that: In the axial direction of the connecting portion (4), each of the fan blades (41) has a first surface and a second surface; and the first swing member group (40) is provided on at least one of the first surface and the second surface.

3. The wind power generation equipment according to claim 1, characterized in that: Each of the first swing devices comprises a swing ball (44) and a connecting assembly, wherein the swing ball (44) is hingedly connected to the fan blade (41) via the connecting assembly; At least part of the swing ball (44) of each of the first swing member groups (40) is always located outside the fan blade (41).

4. The wind power generation equipment according to claim 3, characterized in that: The connecting assembly comprises a first swing rod (43), one end of which is fixedly connected to the swing ball (44) and the other end of which is hinged to the fan blade (41).

5. The wind power generation equipment according to claim 4, characterized in that: A line connecting the positions where each of the first swing rods (43) is hinged to the fan blades (41) is parallel to the first reference center line (s1).

6. The wind power generation equipment according to claim 4, characterized in that: The connection assembly further comprises a mounting plate (42), wherein the mounting plate (42) is fixedly connected to the fan blade (41), and the first swing rod (43) is hinged to a side of the mounting plate (42) away from the fan blade (41).

7. The wind power generation equipment according to claim 3, characterized in that: The first swing devices of each of the first swing member groups (40) are arranged in sequence along the extension direction of the first reference center line (s1).

8. The wind power generation equipment according to any one of claims 3 to 7, characterized in that: The fan blade (41) is also provided with a plurality of first limiting protrusions (411) for limiting the extreme position of the swing ball (44), and the extension direction of each of the first limiting protrusions (411) is perpendicular to the first reference center line (s1).

9. The wind power generation equipment according to claim 8, characterized in that: The swing ball 1 (44) disposed between two adjacent first limiting protrusions (411) is defined as a type of swing ball member (44a); each of the type of swing ball members (44a) has a first limit position and a second limit position, and in the extension direction of the first reference center line (s1), the first limit position is farther away from the connecting portion (4) than the second limit position; At the first extreme position, the first swing rod (43) of each of the first swing ball members (44a) abuts against one of the two adjacent first limiting protrusions (411); and at the second extreme position, the first swing rod (43) of each of the first swing ball members (44a) abuts against the other.

10. The wind power generation equipment according to claim 8, characterized in that: The fan blade (41) is further provided with a plurality of first limiting protrusions (411); in the extension direction of the first reference center line (s1), two types of swinging ball components (44b) are further provided on the fan blade (41); the two types of swinging ball components (44b) are arranged outside the first limiting protrusion (411) located at the outermost side; The second type of swing ball member (44b) has a third limit position and a fourth limit position; the second type of swing ball member (44b) rotates from the third limit position to the fourth limit position at an obtuse angle or 180°.

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