A wind wheel of a resistance type vertical axis wind turbine generator set

Abstract

The present invention discloses a wind wheel of a resistance-type vertical axis wind turbine generator set, comprising a wind wheel body, wherein the wind wheel body comprises a first blade assembly, wherein two ends of the first blade assembly are respectively connected to a first support plate and a second support plate through a reinforcement plate, wherein the first blade assembly comprises three evenly distributed blades, wherein one end of the inner sides of the three blades are respectively connected to three corners of the reinforcement plate having a triangular cross-section, and the other end of the inner sides of the three blades are respectively connected to the three corners of the reinforcement plate, so that the center position of the wind wheel is in a hollow state, and the gap between each two adjacent blades is communicated, and the residual airflow entering the gap can be released and discharged, thereby preventing the airflow turbulence from hindering the rotation of the wind wheel, and improving the wind energy conversion efficiency of the wind wheel.

Description

Technical Field

[0001] The invention relates to the technical field of wind turbines, and in particular to a wind wheel of a resistance-type vertical-axis wind turbine generator set. Background Art

[0002] Wind power generation refers to converting the kinetic energy of wind into electrical energy. Wind power generation is very environmentally friendly and has huge wind energy reserves, so it is increasingly valued by countries around the world. Using a wind wheel to convert wind energy into electrical energy is one of the current implementation methods of wind power generation. However, a central axis is set in the existing wind wheel to fix multiple blades, and then the wind drives the blades to rotate around the central axis, thereby converting wind energy into mechanical energy. However, because the central axis is set, when the wind enters the space between the two blades, some residual airflow cannot be released in the space formed by the connection between the two blades and the central axis, which easily impacts the blades and the central axis, causing turbulence in the airflow, hindering the rotation of the wind wheel, and affecting the wind wheel's conversion efficiency to wind energy. Summary of the invention

[0003] In view of this, the present invention discloses a wind wheel of a resistance-type vertical axis wind turbine generator set, which can improve the wind wheel's conversion efficiency of wind energy.

[0004] The present invention discloses a wind wheel of a resistance-type vertical axis wind turbine generator set, comprising a first blade assembly, wherein the two ends of the first blade assembly are respectively connected to a first support plate and a second support plate through a reinforcement plate, the first blade assembly comprises three evenly distributed blades, one end of the inner sides of the three blades are respectively connected to the three corners of the reinforcement plate having a triangular cross-section, and the other end of the inner sides of the three blades are respectively connected to the three corners of another reinforcement plate.

[0005] Furthermore, it also includes a second blade assembly with the same structure as the first blade assembly, wherein the two ends of the second blade assembly are respectively connected to the second support plate and the third support plate through the reinforcement plate, and the three blades of the first blade assembly and the three blades of the second blade assembly are staggered.

[0006] Furthermore, the reinforcement plates are equilateral triangles, and center lines of all the reinforcement plates are on the same straight line.

[0007] Furthermore, the blades are semicircular.

[0008] Furthermore, the inner side edge of the blade is a vertically arranged reinforcement edge, both ends of the reinforcement edge are respectively provided with mounting shafts, and the reinforcement plate is provided with mounting holes that cooperate with the mounting shafts.

[0009] Furthermore, it also includes a fixed bracket, the first support plate and the third support plate are respectively connected to a rotating shaft, and the rotating shaft is rotatably connected to the fixed bracket through a first bearing.

[0010] Furthermore, the fixing bracket includes a bearing sleeve, and three evenly distributed fixing brackets are connected to the outer side of the bearing sleeve. The rotating shaft is sleeved inside the bearing sleeve and is rotatably connected to the bearing sleeve through the first bearing.

[0011] Furthermore, it also includes a barrier assembly, which includes a barrier plate and a tail rudder plate, the barrier plate is arranged on one side of the wind wheel, and both ends of the barrier plate are provided with a first horizontal connecting rod and a second horizontal connecting rod distributed perpendicular to each other, the first horizontal connecting rod and the second horizontal connecting rod are rotatably connected to the bearing sleeve through a second bearing, the tail rudder plate is arranged on the other side of the wind wheel and is rotatably connected to the second bearing through a tail rudder connecting rod, and the first horizontal connecting rod and the tail rudder connecting rod are on the same straight line.

[0012] Furthermore, the length of the tail rudder connecting rod is greater than the length of the horizontal connecting rod.

[0013] Furthermore, the cross section of the barrier plate is a quarter circle.

[0014] Compared with the prior art, the technical solution disclosed in the present invention has the following beneficial effects:

[0015] The two ends of the inner sides of the three blades are respectively connected to a reinforcing plate with a triangular cross-section, and are respectively connected to the three corners of the triangle, so that the center position of the wind wheel is hollow, and the gaps between every two adjacent blades are connected, and the residual airflow entering the gaps can be released and discharged, preventing the airflow turbulence from hindering the rotation of the wind wheel, which can improve the wind wheel's conversion efficiency to wind energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the structure of the wind wheel;

[0017] Figure 2 This is an exploded view of the wind wheel body;

[0018] Figure 3 for Figure 2 A magnified image of area A;

[0019] Figure 4 is a top view of the first blade assembly;

[0020] Figure 5 for Figure 1 Enlarged view of area B;

[0021] Figure 6A cross-sectional view of the connection position between the wind wheel body and the barrier assembly and the fixed bracket;

[0022] Figure 7 It is a schematic diagram of the structure of the connection between the wind wheel body and the barrier assembly;

[0023] Figure 8 is a working schematic diagram of the barrier assembly under one wind direction state;

[0024] Fig. 9 A schematic diagram of the working state of the barrier assembly after adjustment under another wind direction state;

[0025] Description of the attached drawings

[0026] 100, wind wheel; 10, fixed bracket; 11, bearing sleeve; 12, fixed frame; 13, rotating shaft; 14, fixed frame; 15, second bearing; 20, wind wheel body; 21, first blade assembly; 211, blade; 212, reinforcing edge; 213, mounting shaft; 22, second blade assembly; 221, first support plate; 222, second support plate; 223, third support plate; 224, reinforcing plate; 225, mounting hole; 30, barrier assembly; 31, barrier plate; 32, tail rudder plate; 33, first horizontal connecting rod; 34, second horizontal connecting rod; 35, tail rudder connecting rod; 36, reinforcing rod; a, facing the wind; b, facing away from the wind. DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to another component, or there may be a central component at the same time. Unless otherwise defined, all technical and scientific terms used in this article have the same meaning as those generally understood by technicians in the technical field of the present invention. It should also be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection between the two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0028] It should also be noted that in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0029] like Figure 1 As shown, the present invention discloses a wind rotor 100 of a resistance-type vertical axis wind turbine generator set, comprising a fixed bracket 10, a wind rotor body 20 and a barrier assembly 30, wherein the wind rotor body 20 and the barrier assembly 30 are rotatably connected to the fixed bracket 10 respectively, and the barrier assembly 30 cooperates with the wind rotor body 20 to improve the efficiency of the wind rotor body 20 in converting wind energy into mechanical energy.

[0030] like Figure 2 As shown, the wind rotor body 20 includes a first blade assembly 21 and a second blade assembly 22, and the first blade assembly 21 and the second blade assembly 22 are coaxially distributed and connected to each other. The two ends of the first blade assembly 21 are respectively connected to the first support plate 221 and the second support plate 222 through the reinforcing plate 224, and the first blade assembly 21 includes three evenly distributed blades 211, one end of the inner side edge of the three blades 211 is respectively connected to the three corners of the reinforcing plate 224 with a triangular cross section, and the other end of the inner side edge of the three blades 211 is respectively connected to the three corners of the reinforcing plate 224, so that the central position of the wind rotor body 20 is hollow, and the gap between each adjacent two blades 211 is connected, and the residual airflow entering the gap can be released and discharged, so as to prevent the airflow turbulence from hindering the rotation of the wind rotor body 20, and improve the wind energy conversion efficiency of the wind rotor body 20.

[0031] The structure of the second blade assembly 22 is the same as that of the first blade assembly 21. The two ends of the second blade assembly 22 are respectively connected to the second support plate 222 and the third support plate 223 through the reinforcement plate 224. The three blades 211 on the first blade assembly 21 and the three blades 211 on the second blade assembly 22 are staggered, so that the wind wheel body 20 can convert wind energy in different directions into mechanical energy, thereby improving the practicality of the wind wheel body 20.

[0032] Furthermore, the first support plate 221, the second support plate 222 and the third support plate 223 are metal discs with the same diameter, and the centers of the first support plate 221, the second support plate 222 and the third support plate 223 are on the same straight line.

[0033] Please continue to see Figure 3 Further, the inner side of the blade 211 is a vertically arranged reinforcing edge 212, and the two ends of the reinforcing edge 212 extend outward to form a mounting shaft 213. The reinforcing plate 224 is provided with a mounting hole 225 at an angular position to match the mounting shaft 213. The mounting shaft 213 extends into the mounting hole 225, and the blade 211 is installed between the first support plate 221 and the second support plate 222 or between the second support plate 222 and the third support plate 223. In this embodiment, the reinforcing edge 212 is made of a high-strength alloy.

[0034] Furthermore, the reinforcing plate 224 is a metal plate in the shape of an equilateral triangle, and the three blades 211 are respectively connected to the three corners of the reinforcing plate 224, so that the three blades 211 are evenly distributed. In this embodiment, the axial projections of the three blades 211 on the first blade assembly 21 and the three blades 211 on the second blade assembly 22 on the same plane are evenly distributed. When one of the blades 211 is acted upon by wind, the wind wheel assembly 20 can be rotated.

[0035] Furthermore, the blade 211 is semicircular, with a concave portion and a convex portion on both sides. When the same wind blows toward the concave portion and the convex portion respectively, the resistance to the wind generated by the concave portion is greater than the resistance to the wind generated by the convex portion.

[0036] Please continue to see Figure 4 When the three blades 211 on the first wind wheel assembly 21 and the three blades 211 on the second wind wheel assembly 22 are arranged, the three blades 211 are evenly distributed relative to the support plate, and the outer sides of the blades 211 coincide with the side sides of the support plate. In this embodiment, the ratio of the radius R of the first support plate 221, the second support plate 222 and the third support plate 223 to the radius r of the blade 211 is approximately 11:6. According to the inland wind conditions in China, the wind speed is generally 3m / s-5m / s, which has a good utilization rate of wind energy. Under the condition of similar wind speeds, the wind wheel body 20 can obtain a relatively large rotation speed, which can improve the power generation efficiency.

[0037] Please combine Figure 1 See also Figure 5 and Figure 6The wind wheel body 20 is rotatably connected to the fixed bracket 10 through the first support plate 221 and the third support plate 223. The upper surface of the first support plate 221 and the lower surface of the third support plate 223 are both provided with a rotating shaft 13, and the rotating shaft 13 is rotatably connected to the fixed bracket 10 through a first bearing 14. One of the rotating shafts 13 is used to connect to a power generation device to convert mechanical energy into electrical energy.

[0038] The fixing bracket 10 includes a bearing sleeve 11, and three evenly distributed fixing frames 12 are connected to the outside of the bearing sleeve 11, and the three fixing frames 12 support the wind wheel body 20 through the bearing sleeve 11. The rotating shaft 13 is sleeved inside the bearing sleeve 11 and is rotatably connected to the bearing sleeve 11 through the first bearing 14. In this embodiment, there are two bearing sleeves 11, which are matched with two rotating shafts 13 respectively.

[0039] Three fixing brackets 14 are provided and evenly distributed, and the principle of the stability of a triangle is utilized so that when the wind wheel body 20 rotates, the fixing bracket 10 is relatively stable.

[0040] like Figure 5 and Figure 7 As shown, the barrier assembly 30 is rotatably connected to the fixed bracket 10. The barrier assembly 30 includes a barrier plate 31, which is arranged on one side of the wind rotor body 20 to block the wind from the same side. The first horizontal connecting rod 33 and the second horizontal connecting rod 34 are arranged at both ends of the wind rotor body 20, and the first horizontal connecting rod 33 and the second horizontal connecting rod 34 are vertically distributed. One end of the first horizontal connecting rod 33 is connected to one side of the barrier plate 31, and the other end is rotatably connected to the bearing sleeve 11 through the second bearing 15; one end of the second horizontal connecting rod 34 is connected to the other side of the barrier plate 31, and the other side is rotatably connected to the bearing sleeve 11 through the second bearing 15. The barrier plate 31 can be rotatably connected to the fixed bracket 10 through the first horizontal connecting rod 33 and the second horizontal connecting rod 34, and the barrier plate 31 and the wind rotor body 20 can rotate independently relative to the fixed bracket 10. In this embodiment, a reinforcing rod 36 is provided between the first horizontal connecting rods 33 at both ends of the wind wheel body 20 to increase the stability of the barrier plate 31 .

[0041] The barrier assembly 30 further includes a tail rudder plate 32, which is arranged at the other side of the wind rotor body 20, and is rotatably connected to the second bearing 15 through a tail rudder connecting rod 35. When the tail rudder plate 32 rotates through the second bearing 15 under the action of wind, it can drive the barrier plate 31 to rotate at the same time, and adjust the position of the barrier plate 31 relative to the wind rotor body 20. In this embodiment, the first horizontal connecting rod 33 and the tail rudder connecting rod 35 are on the same straight line, and the length of the tail rudder connecting rod 35 is greater than the length of the first horizontal connecting rod 33, forming a force-saving lever. When the tail rudder plate 32 is under the action of wind, the tail rudder plate 32 can drive the barrier plate 31 to rotate, so that the barrier assembly 30 is more accurate. The tail rudder plate 32 is arranged, and under the action of wind, the tail rudder plate 32 can rotate to a position parallel to the wind, and at the same time drive the barrier plate 31 to move to a corresponding position.

[0042] Furthermore, the barrier plate 31 is a quarter cylinder with a diameter slightly larger than that of the support plate, and is used to shield one side of the wind wheel body 20 .

[0043] Please combine Figure 7 See also Figure 8 When the wind is parallel to the tail rudder plate 32, the wind blowing from the direction away from the tail rudder plate 32 is set as the front wind a, the wind blowing from the direction close to the tail rudder plate 32 is set as the back wind b, and the wind blowing from other directions is set as the side wind.

[0044] When the barrier plate 31 is in the state of facing the wind a, the barrier plate 31 blocks one side of the wind rotor body 20. At this time, the other side of the wind rotor body 20 is subjected to force under the action of the wind, so that the concave part of the blade 211 in the wind rotor body 20 blocks the wind. At this time, the blade 211 generates a positive torque under the action of the wind, so that the wind rotor body 20 starts to rotate to generate electricity. The part blocked by the barrier plate 31 is no longer subjected to the force of the wind, and will not generate a reverse torque on the wind rotor body 20, so it will not generate a reverse force on the rotation of the wind rotor body 20, so that the wind rotor body 20 can convert wind energy into mechanical energy to a large extent. And when the airflow enters between two adjacent blades 211, because there is no central axis between the blades 211, the airflow that is not completely converted into mechanical energy can pass through the gap between the blades 211, and because the barrier plate 31 is a quarter cylinder, it will not block the residual airflow, and the residual airflow can be released and dissipated, and will not collide with the inside of the wind rotor body 20, causing the airflow to be turbulent, thereby improving the wind energy conversion efficiency of the wind rotor body 20.

[0045] Please combine Figure 7 See also Fig. 9When the barrier plate 31 is in the state of facing away from the wind, the concave part of the barrier plate 31 is acted upon by the wind, and under the action of the wind, the barrier plate 31 begins to rotate relative to the wind rotor body 20 at a certain angle. At this time, the tail rudder plate 32 is no longer parallel to the wind direction, and the tail rudder plate 32 begins to drive the barrier plate 31 to rotate under the action of the wind until the tail rudder plate 32 continues to be in a horizontal state with the wind, and then the barrier plate 31 is in the state of facing the wind again, and the wind exerts an action force on the convex surface of the barrier plate 31, and does not drive the barrier plate 31 to rotate. At this time, the wind rotor body 20 is once again changed to one side being acted upon by the wind to generate a positive torque, causing the wind rotor body 20 to rotate, converting wind energy into mechanical energy; the part of the wind rotor body 20 blocked by the barrier plate 31 is not acted upon by the wind, and does not generate a reverse torque that hinders the rotation of the wind rotor body 20. In addition, the airflow entering the wind rotor body 20 can be released and dissipated, thereby improving the wind energy conversion efficiency of the wind rotor body 20.

[0046] When the barrier plate 31 is in a side-facing wind state, the tail rudder plate 32 is driven by the force of the wind to move the barrier plate 31 to a position facing the wind. At this time, the convex surface of the barrier plate 32 is subjected to the positive force of the wind, so that one side of the wind rotor body 20 begins to be subjected to force to generate a positive torque, and then begins to rotate. At this time, the other side of the wind rotor body 20 is not affected by the wind force under the shielding of the barrier plate 32, and the barrier plate 31 is set to be a quarter cylinder, so that the airflow entering the wind rotor body 20 can be dissipated and released, thereby avoiding affecting the rotation of the wind rotor body 20.

[0047] Under normal circumstances, the natural wind direction may change at any time. At this time, under the action of the tail rudder plate 32, the barrier plate 31 can be adjusted at any time according to the change of wind direction, so that the wind wheel body 20 can convert wind energy with maximum efficiency.

[0048] The present invention can be implemented in various forms and modifications without departing from the broad spirit and scope of the present invention. The above-described embodiments are intended to illustrate the invention, but are not intended to limit the scope of the present invention.

Claims

1. A wind wheel of a resistance-type vertical axis wind turbine generator set, characterized in that: It comprises a first blade assembly, the two ends of which are respectively connected to a first support plate and a second support plate through a reinforcing plate, the first blade assembly comprises three evenly distributed blades, one end of the inner side edges of the three blades are respectively connected to three corners of the reinforcing plate having a triangular cross section, and the other end of the inner side edges of the three blades are respectively connected to three corners of another reinforcing plate; It also includes a second blade assembly having the same structure as the first blade assembly, wherein two ends of the second blade assembly are respectively connected to the second support plate and the third support plate through the reinforcing plate, and the three blades of the first blade assembly and the three blades of the second blade assembly are staggered; The reinforcing plates are equilateral triangles, and the center lines of all the reinforcing plates are on the same straight line. It also includes a fixed bracket, the first support plate and the third support plate are respectively connected to a rotating shaft, and the rotating shaft is rotatably connected to the fixed bracket through a first bearing; The fixing bracket includes a bearing sleeve, and the outer side of the bearing sleeve is connected to three evenly distributed fixing brackets. The rotating shaft is sleeved inside the bearing sleeve and is rotatably connected to the bearing sleeve through the first bearing. It also includes a barrier assembly, which includes a barrier plate and a tail rudder plate. The barrier plate is arranged on one side of the wind wheel, and both ends of the barrier plate are provided with a first horizontal connecting rod and a second horizontal connecting rod that are vertically distributed to each other, the first horizontal connecting rod and the second horizontal connecting rod are rotatably connected to the bearing sleeve through a second bearing, the tail rudder plate is arranged on the other side of the wind wheel and is rotatably connected to the second bearing through a tail rudder connecting rod, and the first horizontal connecting rod and the tail rudder connecting rod are on the same straight line.

2. The wind wheel of a resistance-type vertical axis wind turbine generator set according to claim 1, characterized in that: The blades are semicircular.

3. The wind wheel of a resistance-type vertical axis wind turbine generator set according to claim 1, characterized in that: The inner side edge of the blade is a vertically arranged reinforcement edge, both ends of the reinforcement edge are respectively provided with mounting shafts, and the reinforcement plate is provided with mounting holes matched with the mounting shafts.

4. The wind wheel of a resistance-type vertical axis wind turbine generator set according to claim 1, characterized in that: The length of the tail rudder connecting rod is greater than the length of the horizontal connecting rod.

5. The wind wheel of a resistance-type vertical axis wind turbine generator set according to claim 1, characterized in that: The cross section of the barrier plate is a quarter circle.

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