Boosted vertical axis wind power generation structure

Abstract

The utility model relates to wind power generation technical field discloses a kind of boost type vertical axis lift wind power generation structure, comprising: rotating shaft vertical arrangement;Two support arms are provided, and support arm rotation is arranged on rotating shaft, and the support arm extends along the radial direction of rotating shaft outward, and two support arms are interval arranged along height direction;Multiple lift blades are provided, and lift blade is vertically arranged between adjacent two support arms, and lift blade is arranged at the end of support arm away from rotating shaft;Multiple resistance blades are provided, and resistance blade is vertically arranged at the end of support arm, is located on the side end face away from lift blade, and resistance blade has the first wind receiving surface recessed towards the rotating direction of lift blade;When wind blows to the first wind receiving surface of resistance blade, resistance blade drives rotating shaft to rotate, and the utility model increases the rotating radius of resistance blade by resistance blade being arranged at the end of support arm, improves the torque generated by resistance blade, improves wind energy utilization rate.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation technology, specifically to a booster-type vertical axis lift wind power generation structure. Background Technology

[0002] A vertical axis lift wind turbine is a type of wind turbine belonging to the vertical axis wind turbine category. Its rotating axis is perpendicular to the ground or the airflow direction, unlike a horizontal axis wind turbine where the rotating axis is parallel to the airflow direction. It typically consists of blades, a generator, and a support structure.

[0003] In the prior art, a vertical axis lift wind turbine includes: a shaft and multiple sets of lift blades and drag blades mounted on the shaft. Multiple support rods extending radially outward are mounted on the shaft, with lift blades located at the ends of the support rods. The lift blades are arranged in a circumferential array on the shaft. Drag blades are mounted on the support rods between the lift blades and the shaft.

[0004] However, existing technology places the drag blades between the lift blades and the shaft, resulting in a small rotation radius, low torque, and low wind energy utilization. Utility Model Content

[0005] In view of this, the present invention provides a booster-type vertical axis lift wind power generation structure to solve the problem of low wind energy utilization in the prior art where drag blades are placed between lift blades and the shaft.

[0006] This utility model provides a booster-type vertical axis lift wind power generation structure, including: a rotating shaft, vertically arranged, for connecting to a generator;

[0007] A support structure, wherein two support structures are spaced apart along the height direction, the support structure includes: a support arm, wherein multiple support arms are arranged circumferentially along the rotating shaft, the support arms extend radially outward along the rotating shaft, the first end of the support arm is disposed on the rotating shaft, and a mounting cavity is formed between two support arms spaced apart along the height direction;

[0008] Multiple lifting blades are provided, and the lifting blades are vertically arranged in the mounting cavity;

[0009] Multiple drag blades are provided. The drag blades are vertically arranged at the second end of the support arm. The drag blades are located on the end face away from the lift blades. The drag blades have a first wind-receiving surface that is recessed toward the rotation direction of the lift blades.

[0010] When the wind blows towards the first wind-receiving surface of the drag blade, the drag blade drives the rotating shaft to rotate.

[0011] By placing the drag blades at the second end of the support arm, the rotation radius of the drag blades is increased. When the wind blows towards the first windward surface, the drag blades are blown by the wind. Under the action of the wind, the drag blades drive the rotating shaft to rotate, thus starting the rotation. At this time, the drag blades are placed on the end face of the support arm away from the lift blades. The torque generated by the drag blades is increased by the drag blades, thereby improving the wind energy utilization rate.

[0012] In one alternative embodiment, the end face of the drag blade facing away from the lift blade is arc-shaped.

[0013] By setting one end face of the drag blade to be arc-shaped, its aerodynamic performance and the self-starting performance of the fan are improved. The arc-shaped design can guide the airflow more effectively, reduce eddy current losses, and further enhance the synergistic effect between the blades.

[0014] In one alternative embodiment, the drag blade has a first baffle extending toward the shaft on the side facing the shaft, and the first baffle is fixedly connected to the drag blade.

[0015] By setting a first baffle, the structural strength of the support arm can be enhanced.

[0016] In one alternative embodiment, the connection between the first baffle and the drag blade is a circular arc transition.

[0017] By designing the connection between the first baffle and the drag blade as a rounded transition, not only is the stability of the overall structure improved, but the smoothness of airflow is further enhanced, and air resistance is reduced.

[0018] In one alternative embodiment, the first baffle extends perpendicularly to the support arm toward the side away from the drag blade, and the first baffle forms a second wind-receiving surface for receiving wind.

[0019] By extending the first baffle perpendicularly to the support arm to form a second wind-receiving surface, the wind capture capability is enhanced, allowing the second baffle to also drive the support arm to rotate under the action of the wind, further improving the wind energy conversion efficiency.

[0020] In one alternative embodiment, a second fixing ring is fitted onto the rotating shaft, and the second fixing ring is fixedly connected to one end of the first baffle.

[0021] By fitting a second fixing ring onto the rotating shaft, the second fixing ring can enhance the structural strength of the support arm in the rotating shaft section.

[0022] In one alternative embodiment, reinforcing beams for reinforcing the support arms are respectively provided on the side end faces of the two support arms facing each other.

[0023] By adding reinforcing beams, the overall rigidity and stability of the support arm are enhanced, further improving the wind resistance of the wind turbine and ensuring efficient operation even in strong wind environments.

[0024] In one alternative embodiment, the reinforcing beam is fixedly connected to the support arm.

[0025] By fixing the reinforcing beam to the support arm, a robust overall structure is formed, effectively dispersing the impact of wind.

[0026] In one alternative embodiment, a second fixing ring is fitted onto the rotating shaft, and one end of the reinforcing beam is fixedly connected to the second fixing ring.

[0027] By setting a second fixing ring and fixing it to one end of the reinforcing beam, the structural strength of the reinforcing beam in the rotating shaft section is enhanced.

[0028] In one alternative embodiment, the reinforcing beam extends perpendicularly to the support arm to form a third wind-receiving surface.

[0029] A third wind-receiving surface is formed by the reinforcement beam. When the wind blows onto the reinforcement beam, the third wind-receiving surface is brought to the third wind-receiving surface, and the auxiliary resistance blades of the reinforcement beam rotate. Attached Figure Description

[0030] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 This is an exploded view of a booster-type vertical axis lift wind power generation structure according to an embodiment of the present utility model;

[0032] Figure 2 for Figure 1 Top-view perspective of a mid-boost vertical axis lift wind power generation structure;

[0033] Figure 3 for Figure 1 A bottom-view perspective of a vertical axis lift wind turbine structure with a mid-boost mechanism.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Shaft; 2. Support arm; 3. Lifting blade; 4. Drag blade; 5. First wind-receiving surface; 6. First baffle; 7. Second wind-receiving surface; 8. Second fixing ring; 9. Reinforcing beam; 10. Third wind-receiving surface; 11. First fixing ring. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0037] The following is combined with Figures 1 to 3 The following describes embodiments of the present invention.

[0038] like Figure 1 , Figure 2 , Figure 3 As shown in the figure, according to an embodiment of the present invention, a booster-type vertical axis lift wind power generation structure is provided, comprising: a vertically arranged rotating shaft 1 for connecting to a generator, which drives the generator to generate electricity when the rotating shaft 1 rotates; two support structures are spaced apart along the height direction, and lift blades 3 are disposed between the two support structures. The support structure includes: support arms 2, with multiple support arms 2 arranged circumferentially along the rotating shaft 1. The support arms 2 extend radially outward along the rotating shaft 1, with the first end of the support arm 2 disposed on the rotating shaft 1, and a mounting cavity is formed between two support arms 2 spaced apart along the height direction.

[0039] Multiple lift blades 3 are provided, and the lift blades 3 are vertically arranged inside the mounting cavity; multiple drag blades 4 are provided, and the drag blades 4 are vertically arranged at the second end of the support arm 2, located on the end face away from the lift blades 3. That is to say, both the drag blades 4 and the lift blades 3 are located at the second end of the support arm 2, but the drag blades 4 and the lift blades 3 are symmetrically arranged on both sides of the support arm 2. Among them, the drag blades 4 have a first wind-receiving surface 5 that is recessed in the direction of rotation of the lift blades 3; when the wind blows towards the first wind-receiving surface 5 of the drag blades 4, the drag blades 4 drive the rotating shaft 1 to rotate.

[0040] By setting the drag blade 4 at the end of the support arm 2, the rotation radius of the drag blade 4 is increased. When the wind blows towards the first wind-receiving surface 5, the drag blade 4 is blown by the wind. Under the action of the wind, the drag blade 4 drives the rotating shaft 1 to rotate, thus making the rotating shaft 1 start to rotate. At this time, the drag blade 4 is set on the end face of the support arm 2 away from the lifting blade 3. The torque generated by the drag blade 4 is increased by the drag blade 4, thereby improving the wind energy utilization rate.

[0041] Specifically, the lower end of the rotating shaft 1 is connected to a generator. The generator generates electrical energy through the rotation of the rotating shaft 1. The electrical energy is transmitted to the energy storage device or directly supplied to the user through a cable.

[0042] Specifically, during the startup phase of a wind turbine, wind speeds are typically low. The drag blades 4 utilize the principle of air resistance to generate significant drag torque even at relatively low wind speeds, causing the shaft 1 to begin rotating. As the shaft 1 gradually accelerates, the lift blades 3 begin to play a major role, using the lift generated by the wind to further increase the rotational speed and achieve efficient power generation.

[0043] Specifically, the first wind-receiving surface 5 is an arc-shaped groove structure. Wind blows towards this groove, causing the support arm 2 to rotate around the shaft 1, thus increasing the speed of the shaft 1 and enabling the lift blade 3 to rotate at high speed. The drag blade 4, when rotating, also has an arc-shaped end face facing the direction of rotation. This arc shape helps reduce air resistance and improves the overall aerodynamic performance of the structure. Under wind force, the drag blade 4 and the lift blade 3 work together. The arc shape not only optimizes the force distribution on the drag blade 4 during rotation but also ensures the stability and efficiency of the entire wind power generation structure.

[0044] like Figure 1 As shown, in this embodiment, the end face of the drag blade 4 facing away from the lift blade 3 is arc-shaped, with the center of the arc facing one side of the lift blade 3. That is, when the drag blade 4 is located on the upper end face of the upper support arm 2, the upper end face of the drag blade 4 is arc-shaped; when the drag blade 4 is located on the lower end face of the lower support arm 2, the lower end face of the drag blade 4 is arc-shaped. By setting one end face of the drag blade 4 to an arc shape, its aerodynamic performance and the self-starting performance of the fan are improved. The arc-shaped design can more effectively guide airflow, reduce eddy current losses, and further enhance the synergistic effect between the blades. It should be noted that, as an alternative implementation, the center of the arc of the drag blade 4 can also face the side away from the lift blade 3.

[0045] like Figure 1As shown, in this embodiment, the resistance blade 4 has a first baffle 6 extending towards the rotating shaft 1 on its side. The first baffle 6 is a straight plate. The extending direction of the first baffle 6 is the same as the extending direction of the support arm 2, and the first baffle 6 is fixedly connected to the resistance blade 4. The first baffle 6 is also fixedly connected to the support arm 2. By setting the first baffle 6, the structural strength of the support arm 2 can be enhanced. Specifically, one end of the first baffle 6 in the length direction is connected to the resistance blade 4. It should be noted that, as an alternative implementation, the first baffle 6 can be omitted, and the lower end face of the resistance blade 4 can be directly fixed to the resistance blade 4. Alternatively, either the first baffle 6 or the resistance blade 4 can be threadedly connected to the first baffle 6 or the resistance blade 4 by bolts passing through the support arm 2.

[0046] like Figure 1 As shown, in this embodiment, the connection between the first baffle 6 and the drag blade 4 is rounded, meaning that the connection between the first baffle 6 and the drag blade 4 has a rounded chamfer. By designing the connection between the first baffle 6 and the drag blade 4 as a rounded transition, not only is the stability of the overall structure improved, but the smoothness of airflow is further optimized, and air resistance is reduced. It should be noted that, as an alternative implementation, the first baffle 6 and the drag blade 4 can be directly connected without a rounded transition.

[0047] like Figure 1 As shown, in this embodiment, the first baffle 6 extends perpendicularly to the support arm 2 along the side away from the drag blade 4. The end face of the first baffle 6 facing the opening structure of the arc-shaped groove forms a second wind-receiving surface 7 for receiving wind. The second wind-receiving surface 7 cooperates with the first wind-receiving surface 5 of the drag blade 4, and together they drive the support arm 2 and the rotating shaft 1 to rotate under the action of wind force. By setting the second wind-receiving surface 7, the wind force action area is further increased, improving the overall wind energy utilization rate of the wind power generation structure. When the wind turbine is working, the windflow impacts the first wind-receiving surface 5 of the drag blade 4 and the second wind-receiving surface 7 of the first baffle 6, forming a joint force, ensuring the stability and efficiency of the wind power generation structure. It should be noted that, as an alternative implementation, the height of the first baffle 6 can be set to the reinforcing rib of the support arm 2, instead of setting the first baffle 6 to a certain height to form the second wind-receiving surface 7.

[0048] like Figure 1As shown, in this embodiment, a second fixing ring 8 is sleeved on the rotating shaft 1. The second fixing ring 8 is a circular ring. The inner diameter of the second fixing ring 8 is larger than the diameter of the rotating shaft 1. The support arm 2 is connected to the rotating shaft 1, and the second fixing ring 8 only serves to strengthen the structural strength of the support arm 2 at the position of the rotating shaft 1. The second fixing ring 8 is fixedly connected to one end of the first baffle 6 along its length, and the other end of the first baffle 6 along its length is connected to the resistance blade 4. By sleeved on the rotating shaft 1, the second fixing ring 8 can strengthen the structural strength of the support arm 2 at the rotating shaft 1. It should be noted that, as an alternative implementation, the inner diameter of the second fixing ring 8 can also be the same as the diameter of the rotating shaft 1, allowing the second fixing ring 8 to be fixed on the rotating shaft 1.

[0049] like Figure 1 As shown, in this embodiment, reinforcing beams 9 are respectively provided on the side end faces of the two support arms 2 facing each other. The reinforcing beams 9 are located on the lower end face of the upper support arm 2 and on the upper end face of the lower support arm 2. That is, the reinforcing beams 9 and the first baffle 6 are symmetrically arranged on both sides of the support arms 2. The reinforcing beams 9 enhance the overall rigidity and stability of the support arms 2, further improving the wind resistance of the fan and ensuring efficient operation even in strong winds. It should be noted that, as an alternative implementation, the reinforcing beams 9 can be omitted, and the structural strength of the support arms 2 can be strengthened by the first baffle 6.

[0050] like Figure 1 As shown, in this embodiment, the reinforcing beam 9 is fixedly connected to the support arm 2. By fixing the reinforcing beam 9 to the support arm 2, a robust overall structure is formed, effectively dispersing wind impact. It should be noted that, as an alternative implementation, the reinforcing beam 9 can also be configured to be detachably connected to the support arm 2 via bolts.

[0051] like Figure 1 As shown, in this embodiment, a second fixing ring 8 is fitted onto the rotating shaft 1, and one end of the reinforcing beam 9 is fixedly connected to the second fixing ring 8. The second fixing ring 8 is circular, and its diameter is larger than that of the rotating shaft 1. The first fixing ring 11, the second fixing ring 8, and the rotating shaft 1 are concentrically arranged. By fixing the second fixing ring 8 to one end of the reinforcing beam 9, the structural strength of the reinforcing beam 9 in the rotating shaft 1 section is strengthened. It should be noted that, as an alternative implementation, the second fixing ring 8 can be omitted, and the reinforcing beam 9 can be directly installed on the support arm 2.

[0052] like Figure 1As shown, in this embodiment, the reinforcing beam 9 extends perpendicularly to the support arm 2 to form a third wind-receiving surface 10. The first wind-receiving surface 5, the second wind-receiving surface 7, and the third wind-receiving surface 10 are arranged in the same direction. That is, when the wind blows, it blows onto the first wind-receiving surface 5, the second wind-receiving surface 7, and the third wind-receiving surface 10 simultaneously. When the rotating shaft 1 starts or rotates at low speed, the three wind-receiving surfaces are subjected to force together, further improving the wind energy capture efficiency and conversion efficiency. The setting of the third wind-receiving surface 10 not only increases the area of ​​wind force action but also makes the wind power generation structure more stable when subjected to wind force. When the wind turbine is working, the airflow simultaneously impacts the first wind-receiving surface 5 of the drag blade 4, the second wind-receiving surface 7 of the first baffle 6, and the third wind-receiving surface 10 of the reinforcing beam 9. The three wind-receiving surfaces work together to drive the support arm 2 and the rotating shaft 1 to rotate, achieving efficient and stable wind energy conversion. A third wind-receiving surface 10 is formed by the reinforcing beam 9. When wind blows onto the reinforcing beam 9, the wind-receiving surface 10 is drawn to the third wind-receiving surface 10, causing the auxiliary resistance blades 4 to rotate. It should be noted that, as an alternative implementation, the reinforcing beam 9 may not be provided with a third wind-receiving surface 10, and may simply be provided as a reinforcing structure for the support arm 2.

[0053] Installation method of the booster-type vertical axis lift wind turbine structure: During installation, first, the rotating shaft 1 is set vertically, ensuring its lower end is connected to the generator. Next, two support structures are installed at intervals on the rotating shaft 1. Each support structure includes multiple support arms 2 arranged circumferentially along the rotating shaft 1. The first end of each support arm 2 is connected to the rotating shaft 1 via a key, forming a mounting cavity between the two support arms 2. Then, multiple lift blades 3 are vertically installed within the mounting cavity. Simultaneously, drag blades 4 are vertically installed on the second end of each support arm 2, i.e., on the end face away from the lift blades 3. The drag blades 4 have a first wind-receiving surface 5 recessed towards the rotation direction of the lift blades 3. Furthermore, a second fixing ring 8 is fitted onto the rotating shaft 1 and fixedly connected to the second fixing ring 8 and the support arms 2 via a reinforcing beam 9.

[0054] The working principle of the booster-type vertical axis lift wind turbine structure: Under the action of wind, the first wind-receiving surface 5 of the drag blade 4 is impacted by the wind, causing the support arm 2 and the rotating shaft 1 to begin rotating. As the rotational speed increases, the lift blade 3 begins to play a major role, using the lift generated by the wind to further increase the rotational speed. At the same time, the second wind-receiving surface 7 on the first baffle 6 is also affected by the wind, working together with the first wind-receiving surface 5 of the drag blade 4 to push the support arm 2 and the rotating shaft 1 to rotate. The third wind-receiving surface 10 formed by the reinforcing beam 9 also increases the wind-receiving area, further improving the wind energy capture efficiency and conversion efficiency. When the wind turbine is working, the windflow impacts the three wind-receiving surfaces simultaneously, working synergistically to achieve efficient and stable wind energy conversion.

[0055] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A booster-type vertical axis lift wind power generation structure, characterized in that, include: A rotating shaft (1) is vertically positioned for connection to a generator; A support structure, wherein two support structures are spaced apart along the height direction, the support structure includes: a support arm (2), wherein multiple support arms (2) are arranged circumferentially along the rotating shaft (1), the support arms (2) extend radially outward along the rotating shaft (1), the first end of the support arm (2) is disposed on the rotating shaft (1), and an installation cavity is formed between two support arms (2) spaced apart along the height direction; Multiple lifting blades (3) are provided, and the lifting blades (3) are vertically arranged in the mounting cavity; Multiple drag blades (4) are provided. The drag blades (4) are vertically arranged at the second end of the support arm (2). The drag blades (4) are located on the end face away from the lift blade (3). The drag blades (4) have a first wind-receiving surface (5) that is recessed toward the rotation direction of the lift blade (3). When the wind blows towards the first wind-receiving surface (5) of the drag blade (4), the drag blade (4) drives the rotating shaft (1) to rotate.

2. The booster-type vertical axis lift wind power generation structure according to claim 1, characterized in that, The end face of the drag blade (4) facing away from the lift blade (3) is arc-shaped.

3. The booster-type vertical axis lift wind power generation structure according to claim 2, characterized in that, The resistance blade (4) has a first baffle (6) extending toward the rotating shaft (1) on the side facing the rotating shaft (1), and the first baffle (6) is fixedly connected to the resistance blade (4).

4. The booster-type vertical axis lift wind power generation structure according to claim 3, characterized in that, The connection between the first baffle (6) and the resistance blade (4) is a circular arc transition.

5. The booster-type vertical axis lift wind power generation structure according to claim 3, characterized in that, The first baffle (6) extends perpendicularly to the support arm (2) along the side away from the resistance blade (4), and the first baffle (6) forms a second wind-receiving surface (7) for receiving wind.

6. The booster-type vertical axis lift wind power generation structure according to claim 3, characterized in that, A second fixing ring (8) is sleeved on the rotating shaft (1), and the second fixing ring (8) is fixedly connected to one end of the first baffle (6).

7. The booster-type vertical axis lift wind power generation structure according to any one of claims 1-6, characterized in that, Each of the two support arms (2) has a reinforcing beam (9) on one side facing each other.

8. The booster-type vertical axis lift wind power generation structure according to claim 7, characterized in that, The reinforcing beam (9) is fixedly connected to the supporting arm (2).

9. The booster-type vertical axis lift wind power generation structure according to claim 7, characterized in that, A second fixing ring (8) is fitted on the rotating shaft (1), and one end of the reinforcing beam (9) is fixedly connected to the second fixing ring (8).

10. The booster-type vertical axis lift wind power generation structure according to claim 7, characterized in that, The reinforcing beam (9) extends perpendicularly to the support arm (2) to form a third wind-receiving surface (10).

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