Wind driven generator

Abstract

The invention relates to the technical field of wind power generation equipment, in particular to a wind power generator, which comprises a main shaft, a power generation assembly, a wind power generation assembly and a wind power generation assembly, each blade is connected to the main shaft through an adjusting assembly, and the angle of each blade can be adjusted relative to the main shaft; the adjusting assembly comprises a centrifugal weight, the centrifugal weight generates centrifugal force along with rotation of the main shaft, and the inclination angles of the blades are changed along with changes of the centrifugal force. The invention has the beneficial effect that the blade angle can be automatically adjusted according to the wind speed change by utilizing the centrifugal force principle. The self-adaptive capacity reduces the requirement for manual intervention, and stable operation of the device can be kept under different wind speed conditions.

Description

Technical Field

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

[0002] Wind power generation is a technology that utilizes natural energy. It can first convert wind energy into mechanical energy and then convert mechanical energy into electrical energy. This method of electricity production helps reduce environmental pollution and carbon dioxide emissions, and is of great significance for maintaining a clean environment. Therefore, it has been widely supported and promoted around the world.

[0003] However, wind power generation also faces some challenges. The unstable wind speed in nature brings certain uncertainties to wind power generation. In strong wind conditions, the wind turbine blades will rotate rapidly, and a large amount of heat may be generated due to friction during the process. This situation will not only affect the working efficiency and service life of the wind turbine, but also pose a safety hazard. In extreme cases, it may even cause equipment damage or safety accidents. Summary of the invention

[0004] Some simplifications or omissions may be made in this section and the abstract and title of the present application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0005] The object of the present invention is to provide a wind turbine.

[0006] Therefore, its purpose is to solve the problem that under strong wind conditions, windmill blades will rotate rapidly and a large amount of heat may be generated due to friction in the process.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a wind turbine, comprising a main shaft for supporting and transmitting the rotational force generated by blades and transmitting power to a power generation component; a plurality of blades, each blade being connected to the main shaft through an adjustment component and capable of adjusting an angle relative to the main shaft; the adjustment component comprising a centrifugal weight, wherein the centrifugal weight generates centrifugal force as the main shaft rotates, and the blade changes its own inclination angle as the centrifugal force changes.

[0008] As a preferred solution of the wind turbine of the present invention, the adjustment component also includes a telescopic rack, which is pushed and moves in a straight line when the centrifugal weight moves; a gear meshing with the telescopic rack so that the movement of the telescopic rack is converted into the rotational force of the gear; a telescopic cylinder, which is connected to the telescopic rod by a thread, and the telescopic cylinder is coaxially installed with the gear and driven to rotate by the gear; the telescopic rod rises or falls with the rotation of the telescopic cylinder; an adjustment ring is connected to the top of the telescopic rod, and the fixed end of the blade is installed on the adjustment ring.

[0009] As a preferred solution of the wind turbine of the present invention, a collar is sleeved on the outer side of the adjusting ring.

[0010] As a preferred solution of the wind turbine of the present invention, the inner wall of the sleeve ring has an inclined groove design, and the adjustment ring is provided with a ball, and the ball is located in the inclined groove. As the adjustment ring moves up and down, the angle of the adjustment ring itself changes.

[0011] As a preferred solution of the wind turbine of the present invention, a spring is connected between the centrifugal weight and the adjustment assembly, and when the main shaft speed reaches a first threshold, the centrifugal weight moves under the action of centrifugal force to overcome the preset tension of the spring.

[0012] As a preferred solution of the wind turbine of the present invention, the adjusting component is provided with a slide groove for accommodating the sliding of the centrifugal weight, the slide groove is filled with a medium, and the centrifugal weight compresses the medium when it moves.

[0013] As a preferred solution of the wind turbine of the present invention, a rubber layer is fixed to one end of the centrifugal weight corresponding to the medium.

[0014] As a preferred solution of the wind turbine of the present invention, the regulating assembly transmits the pressure generated by the medium to the telescopic rack through a hose, so that the telescopic rack moves accordingly.

[0015] As a preferred solution of the wind turbine of the present invention, the upper half of the collar is provided with a cavity, the interior of the cavity is provided with a guide step, and the middle part of the guide step bulges upward.

[0016] As a preferred solution of the wind turbine of the present invention, when the rotation speed of the main shaft reaches a preset second threshold, the telescopic rod pushes the adjustment ring into the cavity, and the guide step cooperates with the roller to make the roller automatically slide into the inclined groove and reset automatically.

[0017] The beneficial effect of the wind turbine of the present invention is that by utilizing the centrifugal force principle, the invention can realize automatic adjustment of the blade angle according to the wind speed change. This adaptive capability reduces the need for manual intervention and can maintain stable operation of the device under different wind speed conditions.

[0018] At low wind speeds, a larger windward angle helps capture more wind energy; while at high wind speeds or under overload conditions, reducing the windward angle can effectively control output power and prevent equipment from being damaged due to overload. This dynamic adjustment mechanism improves wind energy conversion efficiency while also enhancing device safety and durability.

[0019] Provides additional safety measures in extreme conditions (such as excessive wind). When the spindle speed exceeds the second threshold, the entire device can respond quickly to bring the blades into the minimum windward state, greatly reducing the risk of accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the wind turbine in the present invention.

[0022] Figure 2 It is a schematic diagram of the cross-sectional structure of the main shaft of the wind turbine in the present invention.

[0023] Figure 3 It is a schematic cross-sectional structure diagram of the regulating assembly of the wind turbine in the present invention.

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the guide step of the wind turbine in the present invention.

[0025] Figure 5 It is a schematic diagram of the blade rotation demonstration structure of the wind turbine in the present invention.

[0026] In the figure:

[0027] 100, main shaft; 101, blade;

[0028] 200, adjustment assembly; 201, centrifugal weight; 202, telescopic rack; 203, gear; 204, telescopic cylinder; 205, telescopic rod; 206, adjustment ring; 207, sleeve ring; 208, inclined groove; 209, ball bearing; 211, spring; 212, slide groove; 213, cavity; 214, guide step. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0032] Example 1

[0033] Reference Figure 1-3 , which is the first embodiment of the present invention, provides a wind turbine, including a main shaft 100, used to support and transmit the rotational force generated by blades 101, and transmit power to a power generation component; a plurality of blades 101, each blade 101 is connected to the main shaft 100 through an adjustment component 200, and can adjust the angle relative to the main shaft 100; the adjustment component 200 includes a centrifugal weight 201, wherein the centrifugal weight 201 generates centrifugal force as the main shaft 100 rotates, and the blade 101 changes its own inclination angle as the centrifugal force changes.

[0034] In this embodiment, the main shaft 100 is not only responsible for supporting the blades 101, but also for transmitting the mechanical energy generated by the rotation of the blades 101 to the generator to generate electrical energy. The number of blades 101 can be determined according to specific needs, but at least two blades are required to form an effective wind wheel. Each blade 101 is connected to the main shaft 100 through an adjustment component 200 to facilitate the angle adjustment function. The adjustment component 200 cleverly applies the principle of physics - that is, when the main shaft 100 rotates, the centrifugal weight 201 installed thereon will generate an outward centrifugal force, thereby affecting the posture of the blade 101.

[0035] Specifically, in the startup phase: when the wind speed reaches a certain value, the wind starts to push the blades 101 to rotate around the main shaft 100. At this time, due to the low initial speed, the centrifugal force is relatively small, and the blades 101 are kept at a relatively large windward angle, which is conducive to capturing more wind energy.

[0036] Acceleration process: As the rotation speed of the blade 101 gradually increases, the centrifugal force on the centrifugal weight 201 also increases. This force causes the adjustment component 200 to move, resulting in a change in the angle of the blade 101 relative to the main shaft 100. Generally speaking, in order to reduce the risk of damage to the equipment caused by excessively high rotation speed, the blade 101 is moved outward around the axis, thereby reducing the effective windward area of ​​the blade 101, thereby reducing the overall rotation speed.

[0037] Through the above mechanism, no matter how the external wind speed changes, the entire device can maintain a relatively stable operating state. That is, absorb as much energy as possible under low wind speed conditions; and in strong wind conditions, adjust the angle of the blade 101 to control the output power to prevent overload operation. Compared with traditional designs with fixed angles or requiring manual intervention, this automatic adjustment method based on centrifugal force enables wind turbines to better adapt to complex and changeable natural environments. By dynamically adjusting the optimal angle of attack of the blade 101, the conversion rate of wind energy into electrical energy can be effectively improved.

[0038] Example 2

[0039] Reference Figure 2-4 , which is the second embodiment of the present invention, and is different from the previous embodiment in that the adjustment assembly 200 further includes a telescopic rack 202, which is pushed and moves in a straight line when the centrifugal weight 201 moves; a gear 203, which meshes with the telescopic rack 202, so that the movement of the telescopic rack 202 is converted into the rotational force of the gear 203; a telescopic cylinder 204, which is threadedly connected to the telescopic rod 205, the telescopic cylinder 204 is coaxially installed with the gear 203, and is driven to rotate by the gear 203; the telescopic rod 205 rises or falls with the rotation of the telescopic cylinder 204; an adjustment ring 206, which is connected to the top of the telescopic rod 205, and the fixed end of the blade 101 is installed on the adjustment ring 206. The outer side of the adjustment ring 206 is provided with a collar 207. The inner wall of the sleeve ring 207 is designed with an inclined groove 208. The adjusting ring 206 is provided with a ball 209. The ball 209 is located in the inclined groove 208. As the adjusting ring 206 moves up and down, the angle of the adjusting ring 206 itself changes.

[0040] A spring 211 is connected between the centrifugal weight 201 and the adjustment component 200. When the rotation speed of the main shaft 100 reaches the first threshold, the centrifugal weight 201 moves under the action of centrifugal force to overcome the preset tension of the spring 211. A chute 212 is provided inside the adjustment component 200 to accommodate the sliding of the centrifugal weight 201. The chute 212 is filled with a medium. When the centrifugal weight 201 moves, it compresses the medium. A rubber layer is fixed to one end of the centrifugal weight 201 corresponding to the medium. The adjustment component 200 transmits the pressure generated by the medium to the telescopic rack 202 through a hose, causing the telescopic rack 202 to move accordingly.

[0041] In this embodiment, the telescopic rack 202 is a component that can move in a straight line. When the centrifugal weight 201 moves due to the centrifugal force, it pushes the telescopic rack 202. The telescopic rack 202 includes a main rack and a movable cylinder that accommodates the main rack. The gear 203 meshes with the telescopic rack 202 to convert the linear motion of the telescopic rack 202 into rotational motion. The telescopic cylinder 204 is connected to the telescopic rod 205 through a thread, and is coaxially installed with the gear 203, and is driven to rotate by the gear 203. The telescopic rod 205 rises or falls with the rotation of the telescopic cylinder 204, directly controlling the position of the adjustment ring 206. Threaded lifting can provide very precise position control, and the threaded structure allows them to naturally "lock" in the current position when the external force stops being applied to prevent them from sliding down due to gravity. This feature is very important for carrying heavy objects or maintaining a specific position. The threaded structure can withstand a large load. This means that it can work stably even when lifting heavy objects.

[0042] The adjusting ring 206 is located at the top of the telescopic rod 205 and is used to fix the blade 101. The movement of the adjusting ring 206 directly affects the angle of the blade 101. The collar 207 is sleeved on the outside of the adjusting ring 206, and the inner wall is provided with an inclined groove 208, which is used in conjunction with the ball 209 on the adjusting ring 206 to achieve angle adjustment. Spring 211: Connects between the centrifugal weight 201 and the adjusting assembly 200, provides a preset tension, and ensures that only when the speed of the main shaft 100 reaches a specific threshold, the centrifugal weight 201 will overcome the force of the spring 211 and move outward. The chute 212 is set inside the adjusting assembly 200, which is specially designed for the centrifugal weight 201 and allows it to slide freely. The medium is filled in the chute 212, and the centrifugal weight 201 will exert pressure on the medium when it moves. Among them, it can be liquid or gas. The hose is used to transmit the force generated by the pressure of the medium to the telescopic rack 202, causing the latter to move.

[0043] Specifically, when the device is started, the main shaft 100 starts to rotate, but if the speed does not reach the first threshold, the centrifugal weight 201 will not move, because the centrifugal force at this time is not enough to overcome the preset tension of the spring 211. As the speed gradually increases until it exceeds the first threshold, the centrifugal force increases, causing the centrifugal weight 201 to overcome the force of the spring 211 and move away from the center. The movement of the centrifugal weight 201 compresses the medium in the slide 212, and transmits the pressure to the telescopic rack 202 through the hose. The telescopic rack 202 moves in a straight line after being pressed, thereby driving the gear 203 engaged therewith to rotate. The rotation of the gear 203 causes the telescopic cylinder 204 to rotate through the threaded mechanism, thereby causing the telescopic rod 205 to rise. The movement of the telescopic rod 205 ultimately causes the position of the adjustment ring 206 to change; due to the design of the ball 209 and the inclined groove 208 between the adjustment ring 206 and the collar 207, this change not only affects the height of the adjustment ring 206, but also changes its angle relative to the horizontal plane. The blade 101 is fixed on the adjustment ring 206 , so as the angle of the adjustment ring 206 changes, the angle of the blade 101 is also adjusted accordingly, realizing the function of adaptive adjustment according to the rotation speed of the main shaft 100 .

[0044] Example 3

[0045] Reference Figure 3-4 , which is the third embodiment of the present invention, and this embodiment further provides a wind turbine. A cavity 213 is provided in the upper half of the collar 207, and a guide step 214 is provided inside the cavity 213, and the middle part of the guide step 214 bulges upward. When the rotation speed of the main shaft 100 reaches a preset second threshold, the telescopic rod 205 pushes the adjustment ring 206 into the cavity 213, and the guide step 214 cooperates with the roller to make the roller automatically slide into the inclined groove 208 and reset automatically.

[0046] In this embodiment, the upper portion of the collar 207 is designed with a cavity 213 for accommodating other components.

[0047] The guide step 214 is a protruding structure of a special shape disposed in the cavity 213 in the collar 207 , wherein the central area thereof is upwardly raised, and the two sides thereof gradually and smoothly transition to the edges.

[0048] Once it is detected that the wind force is too strong or other abnormal conditions cause the rotation speed of the main shaft 100 to exceed the preset second threshold, the telescopic rod 205 begins to continue to extend, pushing the adjustment ring 206 to move inward until it completely enters the cavity 213 in the ring 207.

[0049] When the adjusting ring 206 is pushed into the cavity 213 and the height is greater than the guide step 214, the roller will separate from the inclined groove 208, thereby losing the constraint on the adjusting ring 206. Therefore, under the blowing of wind, the blade 101 can rotate freely, so that the blade 101 is kept at a minimum windward angle position under the action of wind. Figure 5 As shown, the working load of the wind turbine is effectively reduced, and the potential safety hazards caused by overspeed operation are avoided.

[0050] When the wind force is normal, the roller on the adjusting ring 206 first contacts the guide step 214 and slides along its surface. Due to the upward bulging design of the middle part of the guide step 214, the roller passes through the guide step 214 under the action of gravity and finally reaches the entrance of the chute 208. At this time, relying on the action of gravity and the guiding function provided by the chute 208 itself, the roller will automatically slide down along the chute 208 and finally stabilize at a predetermined position, completing the entire reset process.

[0051] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0052] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0053] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A wind turbine generator, characterized in that: include, A main shaft (100) for supporting and transmitting the rotational force generated by the blades (101) and transmitting the power to the power generation assembly; a plurality of blades (101), each of the blades (101) being connected to the main shaft (100) via an adjustment assembly (200) and capable of adjusting an angle relative to the main shaft (100); The adjustment component (200) comprises a centrifugal weight (201), wherein the centrifugal weight (201) generates centrifugal force as the main shaft (100) rotates, and the blade (101) changes its own inclination angle as the centrifugal force changes.

2. The wind turbine generator according to claim 1, characterized in that: The adjustment component (200) further includes: A telescopic rack (202), when the centrifugal weight (201) moves, the telescopic rack (202) is pushed and moves in a straight line direction; A gear (203) meshing with the telescopic rack (202) so that the movement of the telescopic rack (202) is converted into a rotational force of the gear (203); A telescopic cylinder (204) is connected to the telescopic rod (205) via a thread, the telescopic cylinder (204) is coaxially mounted with the gear (203), and is driven to rotate by the gear (203); The telescopic rod (205) rises or falls as the telescopic cylinder (204) rotates; An adjusting ring (206) is connected to the top of the telescopic rod (205), and the fixed end of the blade (101) is mounted on the adjusting ring (206).

3. The wind turbine generator according to claim 2, characterized in that: A sleeve ring (207) is sleeved on the outer side of the adjustment ring (206).

4. The wind turbine generator according to claim 3, characterized in that: The inner wall of the sleeve ring (207) is provided with an inclined groove (208), and the adjusting ring (206) is provided with a ball (209). The ball (209) is located in the inclined groove (208). As the adjusting ring (206) moves up and down, the angle of the adjusting ring (206) itself is changed.

5. The wind turbine generator according to claim 4, characterized in that: A spring (211) is connected between the centrifugal weight (201) and the adjustment assembly (200); when the rotation speed of the spindle (100) reaches a first threshold, the centrifugal weight (201) moves under the action of centrifugal force to overcome the preset pulling force of the spring (211).

6. The wind turbine generator according to claim 5, characterized in that: The adjusting component (200) is provided with a slide groove (212) for accommodating the sliding of the centrifugal weight (201), and the slide groove (212) is filled with a medium. When the centrifugal weight (201) moves, the medium is compressed.

7. The wind turbine generator according to claim 6, characterized in that: A rubber layer is fixed to one end of the centrifugal weight (201) corresponding to the medium.

8. The wind turbine generator according to claim 7, characterized in that: The regulating assembly (200) transmits the pressure generated by the medium to the telescopic rack (202) through a hose, so that the telescopic rack (202) moves accordingly.

9. The wind turbine generator according to claim 3, characterized in that: The upper half of the collar (207) is provided with a cavity (213), the interior of the cavity (213) is provided with a guide step (214), and the middle portion of the guide step (214) bulges upwards.

10. The wind turbine generator according to claim 9, characterized in that: When the rotation speed of the main shaft (100) reaches a preset second threshold, the telescopic rod (205) pushes the adjustment ring (206) into the cavity (213), and the guide step (214) cooperates with the roller to enable the roller to automatically slide into the inclined groove (208) and reset automatically.

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