Adjustable vertical axis wind turbine

Abstract

The invention discloses an adjustable vertical-axis wind turbine, and relates to the technical field of wind power generation. The device comprises a supporting column, a mounting cylinder is fixedly mounted at the top end of the supporting column, the mounting cylinder and the supporting column are fixedly mounted through a flange, a rotating column is rotatably connected to the top of the mounting cylinder in a limiting mode, and connecting plates are rotatably connected to the periphery of the rotating column in a uniform limiting mode; a mounting shaft is hinged to the side, away from the rotating column, of the connecting plate in a limiting mode, and main blades are rotationally connected to the outer side of the mounting shaft in a limiting mode. The positions and the gravity centers of the blades are adjusted at the starting stage of driving rotation and under the condition of different rotating speeds, rotation can be started more easily in the static state, continuous rotation can be better facilitated after rotation, effective utilization of wind energy is improved, generated electric quantity is increased, and the wind power generation efficiency is improved. The attack angle of the blade is adjusted according to the wind speed, so that the blade is always located at the optimal wind receiving angle, and the utilization rate of wind energy is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, and particularly relates to an adjustable vertical axis wind turbine generator. Background Art

[0002] Wind power generation refers to converting the kinetic energy of wind into electrical energy. Wind is a pollution-free energy source, and using wind power generation is very environmentally friendly. Therefore, as a clean and renewable energy source, the application of wind power generation is becoming more and more extensive. In addition to the common "windmill" type horizontal axis wind turbine generators, there are also vertical axis wind turbine generators. Vertical axis wind turbine generators do not need to face the wind when the wind direction changes, and their structural design is simpler, and the gyroscopic force when the wind wheel faces the wind is also reduced.

[0003] However, the existing vertical axis wind turbine generators still have the following defects during use: 1. The blades of the existing vertical axis wind turbine generators are all fixed, and it is impossible to adjust the position and center of gravity of the blades during the starting stage of driving rotation and at different rotational speeds, thereby reducing the effective utilization of wind energy and the generated electricity needs to be improved.

[0004] 2. The inclination angle of the blades of the existing vertical axis wind turbine generators is fixed during installation, so the angle of attack of the blades is certain, and it is impossible to adjust the angle of attack of the blades according to the wind speed, and thus it is impossible to keep the blades in the best wind receiving angle all the time, reducing the utilization rate of wind energy. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems that it is impossible to adjust the position and center of gravity of the blades during the starting stage of driving rotation and at different rotational speeds, thereby reducing the effective utilization of wind energy and the generated electricity needs to be improved, and it is impossible to adjust the angle of attack of the blades according to the wind speed, and thus it is impossible to keep the blades in the best wind receiving angle all the time, reducing the utilization rate of wind energy. The present invention provides an adjustable vertical axis wind turbine generator.

[0006] The present invention specifically adopts the following technical solutions to achieve the above purpose: An adjustable vertical axis wind turbine generator, including a support column, the top of the support column is fixedly installed with an installation cylinder, the installation cylinder and the support column are fixedly installed through a flange, the top of the installation cylinder is rotationally connected with a rotating column in a limited way, the periphery of the rotating column is rotationally connected with connecting plates in a limited and uniform way, one side of the connecting plate away from the rotating column is rotationally connected with an installation shaft in a limited way, the outside of the installation shaft is rotationally connected with main blades in a limited way, and a transmission component is arranged between the connecting plates on the periphery of the rotating column, and the transmission component is used to control the expansion and contraction of the connecting plates according to the rotational speed.

[0007] Further, two of the connecting plates are grouped together and symmetrically extend upward and downward around the rotating column, and there are three groups of the connecting plates, which are evenly distributed around the rotating column.

[0008] Further, on the side of the symmetrically arranged connecting plates above and below away from the rotating column, mounting shafts are respectively and limit-hinged. After the mounting shafts arranged above and below extend outward, the adjacent sides are hinged to each other. On the outer sides of the mounting shafts arranged above and below, main blades are respectively and limit-rotationally connected. Therefore, when the connecting plates are expanded or contracted, through the action of the mutually hinged mounting shafts, the main blades arranged above and below can be driven to move in the direction opposite to the connecting plates for expansion or contraction.

[0009] Further, the transmission assembly includes a cylindrical barrel. Cylindrical barrels are fixedly installed between the connecting plates distributed above and below around the rotating column. A telescopic rod is slidably connected to the outer side of the cylindrical barrel. A spring is fixedly connected between the end of the telescopic rod located inside the cylindrical barrel and the inner wall of the cylindrical barrel to realize the elastic telescopic movement of the telescopic rod. A counterweight spherical ball is fixedly installed at the outer end of the telescopic rod, which is beneficial to drive the telescopic rod to move outward under the action of centrifugal force. Transmission shafts are connected between the upper and lower sides of the telescopic rod and the connecting plates. Auxiliary blades are fixedly installed on the outer perimeters of the transmission shafts to improve the wind power capture effect.

[0010] Further, after one side of the transmission shafts arranged above and below is hinged to the upper and lower sides of the telescopic rod, the other side extends inward and upward and is hinged to the connecting plates on the upper and lower sides. Therefore, when the telescopic rod moves outward, the connecting plates on the upper and lower sides can be driven to contract through the transmission shafts. On the contrary, when the telescopic rod contracts inward, the connecting plates can be pushed to expand through the transmission shafts.

[0011] Further, the inclination directions of the main blades and the auxiliary blades are the same, so that the vertical axial rotational force directions generated by the main blades and the auxiliary blades under the action of wind are the same, and thus a combined action is generated.

[0012] Further, on the inner ends of the adjacent parts of the main blades arranged above and below, limiting grooves are respectively opened. A connecting shaft is movably connected in a limiting manner between the limiting grooves. The length of the connecting shaft remains unchanged, and limiting balls are fixedly installed at the upper and lower ends of the connecting shaft. The limiting balls are respectively and limit-rotationally connected inside the limiting grooves on the adjacent sides of the main blades arranged above and below. Therefore, the angle of the main blades can be maintained through the connecting shaft. When the connecting plates are expanded and contracted and drive the main blades arranged above and below to expand and contract through the mounting shafts, the main blades arranged above and below can rotate synchronously through the action of the connecting shaft, so as to realize the adjustment of the angle of the main blades.

[0013] The beneficial effects of the present invention are as follows: 1. In the present invention, through the transmission design of the connecting plate with the mounting shaft and the main blade, by using the transmission adjustment of the transmission component for the connecting plate at different rotational speeds, when rotation occurs and the rotational speed gradually increases, the connecting plate and the main blade can be contracted and moved outward, which is beneficial to continuous rotation after rotation and improves the effective utilization of wind energy. When in a stopped state, the connecting plate and the main blade are unfolded and moved inward, which can better capture wind power and more easily achieve the start of driving rotation, thereby increasing the generated electricity.

[0014] 2. In the present invention, through the design of the connecting shaft between the upper and lower main blades, when the main blades are unfolded and contracted according to the rotational speed, the upper and lower main blades can rotate synchronously, so that the inclination angle of the main blades can be changed according to different rotational speeds, thereby realizing the adjustment of the angle of attack of the main blades according to the wind speed, keeping the main blades always at the best wind-receiving angle, and improving the utilization rate of wind energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic three-dimensional structure of the present invention Figure 1 ; Figure 2 is a schematic three-dimensional structure of the present invention Figure 2 ; Figure 3 is a top view of the structure of the present invention; Figure 4 is a schematic three-dimensional structure diagram of the control of the transmission component of the present invention; Figure 5 is a schematic three-dimensional sectional structure diagram of the control of the transmission component of the present invention; Figure 6 is a schematic three-dimensional structure diagram of the installation of the connecting plate and the main blade of the present invention; Figure 7 is a partial three-dimensional structure diagram of the installation of the upper and lower main blades of the present invention; Figure 8 is an exploded view of the partial three-dimensional structure of the installation of the upper and lower main blades of the present invention.

[0016] Reference numerals: 1, support column; 2, mounting cylinder; 3, rotating column; 4, connecting plate; 5, mounting shaft; 6, main blade; 61, limiting groove; 7, transmission component; 71, cylindrical cylinder; 72, telescopic rod; 73, spring; 74, counterweight ball; 75, transmission shaft; 76, auxiliary blade; 8, connecting shaft; 81, limiting ball. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0018] An adjustable vertical-axis wind turbine according to a preferred embodiment of the present invention will be described in detail below, as Figures 1-3 shown, an adjustable vertical-axis wind turbine includes a support column 1. A mounting cylinder 2 is fixedly installed at the top of the support column 1. The mounting cylinder 2 is fixedly installed with the support column 1 through a flange. A rotating column 3 is rotationally connected to the top of the mounting cylinder 2 in a limited manner. A connecting plate 4 is rotationally connected to the periphery of the rotating column 3 in a limited and uniform manner. Two connecting plates 4 form a group and are symmetrically unfolded upward and downward on the periphery of the rotating column 3. And there are three groups of connecting plates 4, which are evenly distributed on the periphery of the rotating column 3.

[0019] One side of the connecting plate 4 away from the rotating column 3 is rotationally hinged with a mounting shaft 5. The outer side of the mounting shaft 5 is rotationally connected with a main blade 6 in a limited manner. A transmission component 7 is arranged between the connecting plates 4 on the periphery of the rotating column 3. The transmission component 7 is used to control the unfolding and contraction of the connecting plate 4 according to the rotation speed.

[0020] One side of the upper and lower symmetric connecting plates 4 away from the rotating column 3 is rotationally hinged with a mounting shaft 5 in a limited manner. And the adjacent sides of the upper and lower distributed mounting shafts 5 extend outward and are hinged to each other. The outer sides of the upper and lower distributed mounting shafts 5 are rotationally connected with main blades 6 in a limited manner. Therefore, when the connecting plate 4 unfolds or contracts, through the action of the mutually hinged mounting shafts 5, the upper and lower distributed main blades 6 can be driven to move in the direction opposite to the connecting plate 4 for unfolding or contraction.

[0021] Further, as Figure 1 、 Figures 4-6 shown, the transmission component 7 includes a cylindrical cylinder 71. Cylindrical cylinders 71 are fixedly installed between the upper and lower distributed connecting plates 4 on the periphery of the rotating column 3. A telescopic rod 72 is slidably connected to the outer side of the cylindrical cylinder 71. A spring 73 is fixedly connected between one end of the telescopic rod 72 located inside the cylindrical cylinder 71 and the inner wall of the cylindrical cylinder 71 to realize the elastic telescopic movement of the telescopic rod 72. A counterweight sphere 74 is fixedly installed at the outer end of the telescopic rod 72, which is beneficial to driving the telescopic rod 72 to move outward under the action of centrifugal force. Transmission shafts 75 are connected between the upper and lower sides of the telescopic rod 72 and the connecting plate 4. Sub-blades 76 are fixedly installed on the peripheries of the transmission shafts 75 to improve the wind capture effect through the sub-blades 76.

[0022] After one side of the upper and lower distributed transmission shafts 75 is hinged to the upper and lower sides of the telescopic rod 72, the other side unfolds upward and downward inward and is hinged to the upper and lower sides of the connecting plate 4. Therefore, when the telescopic rod 72 moves outward, the upper and lower sides of the connecting plate 4 can be driven to contract through the transmission shaft 75. On the contrary, when the telescopic rod 72 contracts inward, the connecting plate 4 can be pushed to unfold through the transmission shaft 75.

[0023] The inclination directions of the main blade 6 and the auxiliary blade 76 are the same, so that the directions of the vertical axial rotation forces generated by the main blade 6 and the auxiliary blade 76 under the action of wind are the same, and thus a combined action is produced.

[0024] Furthermore, as Figures 6-8 shown, limiting grooves 61 are provided at the inner ends of adjacent parts of the main blades 6 distributed vertically. A connecting shaft 8 is connected between the limiting grooves 61 in a limiting and movable manner. The length of the connecting shaft 8 remains unchanged, and limiting balls 81 are fixedly installed at the upper and lower ends of the connecting shaft 8. The limiting balls 81 are respectively connected to the inside of the limiting grooves 61 on the adjacent sides of the main blades 6 distributed vertically in a limiting and rolling manner. Therefore, while the angle of the main blade 6 can be maintained by the connecting shaft 8, when the connecting plate 4 is unfolded and contracted, and the main blades 6 distributed vertically are driven by the mounting shaft 5 to be unfolded and contracted, the main blades 6 distributed vertically can be rotated synchronously through the action of the connecting shaft 8, so as to realize the adjustment of the angle of the main blade 6.

[0025] The working principle of the present invention is: When there is wind force, through the combined action of the main blade 6 and the auxiliary blade 76, the connecting plate 4 can be driven to rotate, and then the central rotating column 3 can be driven to rotate, so as to convert the wind force into a vertical axial rotation force, and thus realize wind power generation.

[0026] After rotation is generated, the counterweight spheres 74 in the transmission assembly 7 will move outward under the action of centrifugal force, and then drive the telescopic rod 72 to stretch the spring 73 and move outward. During the outward movement of the telescopic rod 72, through the action of the transmission shaft 75, the connecting plates 4 on the upper and lower sides can be pulled to contract.

[0027] Through the action of the mounting shaft 5 that is hinged between the connecting plates 4 on the upper and lower sides, when the connecting plates 4 contract, the main blades 6 on the upper and lower sides can also be driven to contract towards each other. The faster the rotation speed is, the more the telescopic rod 72 and the counterweight spheres 74 move outward under the action of centrifugal force. Therefore, the more the connecting plates 4 and the main blades 6 are driven to contract. When the rotation stops, the telescopic rod 72 moves inward under the action of the restoring force of the spring 73, and then the connecting plates 4 and the main blades 6 are unfolded and move towards the side close to the rotating column 3.

[0028] Therefore, the position and center of gravity adjustment of the main blade 6 in the starting stage of driving rotation and under different rotational speeds are realized. After rotation occurs, the connecting plate 4 and the main blade 6 contract and move outward. Moreover, the faster the rotation, the more they contract and move outward, causing the center of gravity to shift outward and the rotating body to contract more, so as to increase inertia, which is beneficial to continuous rotation after rotation occurs and improves the effective utilization of wind energy. When in the stopped state, the connecting plate 4 and the main blade 6 expand and move inward, enabling better capture of wind power and making it easier to achieve the start of driving rotation.

[0029] Through the action of the connecting shaft 8 between the upper and lower main blades 6, when the upper and lower main blades 6 remain stationary, since the length of the connecting shaft 8 is constant, the inclination angles of the upper and lower main blades 6 can be kept unchanged. When the main blade 6 contracts and expands according to different rotational speeds, during the symmetrical rotation of the main blade 6, through the action of the connecting shaft 8, in cooperation with the limiting rolling connection of the limiting balls 81 at both upper and lower ends of the connecting shaft 8 in the limiting grooves 61 at the inner ends of the adjacent parts of the main blade 6, in order to keep the distance between the inner ends of the adjacent parts of the main blade 6 unchanged, the upper and lower main blades 6 will be driven to rotate synchronously, so that the inclination angle of the main blade 6 changes according to different rotational speeds, thereby realizing the adjustment of the angle of attack of the main blade 6 according to the wind speed, enabling the main blade 6 to always be at the optimal wind-receiving angle and improving the utilization rate of wind energy.

[0030] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An adjustable vertical axis wind turbine, comprising a support column (1), characterized in that: A mounting cylinder (2) is fixedly mounted on the top of the support column (1), the mounting cylinder (2) and the support column (1) are fixedly mounted via a flange, the top of the mounting cylinder (2) is connected to a rotating column (3) in a limited rotation manner, the periphery of the rotating column (3) is connected to a connecting plate (4) in a limited rotation manner, a side of the connecting plate (4) away from the rotating column (3) is hingedly mounted with a mounting shaft (5), the outer side of the mounting shaft (5) is connected to a main blade (6), and a transmission assembly (7) is arranged between the connecting plates (4) on the periphery of the rotating column (3), and the transmission assembly (7) is used to control the expansion and contraction of the connecting plate (4) according to the rotation speed.

2. The adjustable vertical axis wind turbine according to claim 1, characterized in that: The connecting plates (4) are grouped in two and are symmetrically spread out upward and downward on the periphery of the rotating column (3), and there are a total of three groups of connecting plates (4) that are evenly distributed on the periphery of the rotating column (3).

3. The adjustable vertical axis wind turbine according to claim 2, characterized in that: The side of the upper and lower symmetrical connecting plates (4) away from the rotating column (3) is limitedly hinged with a mounting shaft (5), and the mounting shafts (5) distributed up and down are extended outwardly and are hinged to each other on adjacent sides, and the outer sides of the mounting shafts (5) distributed up and down are limitedly rotatably connected with main blades (6).

4. The adjustable vertical axis wind turbine according to claim 1, characterized in that: The transmission assembly (7) comprises: A cylindrical barrel (71), wherein the cylindrical barrel (71) is fixedly mounted between the connecting plates (4) distributed above and below the periphery of the rotating column (3); A telescopic rod (72), the outer side of the cylindrical tube (71) being slidably connected to the telescopic rod (72); A spring (73), wherein the telescopic rod (72) is located between one end of the cylindrical tube (71) and the inner wall of the cylindrical tube (71), and the spring (73) is fixedly connected to achieve elastic telescopic movement of the telescopic rod (72); A counterweight ball (74), a counterweight ball (74) being fixedly mounted on one end of the outer side of the telescopic rod (72); A transmission shaft (75), wherein the transmission shaft (75) is transmission-connected between the upper and lower sides of the telescopic rod (72) and the connecting plate (4); Auxiliary blades (76), the outer periphery of the transmission shaft (75) is fixedly mounted with auxiliary blades (76).

5. The adjustable vertical axis wind turbine according to claim 4, characterized in that: One side of the transmission shaft (75) distributed vertically is hinged to the upper and lower sides of the telescopic rod (72), and the other side is unfolded inwardly and then hinged to the upper and lower connecting plates (4).

6. The adjustable vertical axis wind turbine according to claim 4, characterized in that: The main blade (6) and the auxiliary blade (76) have the same inclination direction.

7. The adjustable vertical axis wind turbine according to claim 1, characterized in that: Limiting grooves (61) are provided at one end of the inner sides of the adjacent main blades (6) distributed up and down, and a connecting shaft (8) is movably connected between the limiting grooves (61).

8. The adjustable vertical axis wind turbine according to claim 7, characterized in that: The length of the connecting shaft (8) remains unchanged, and limiting balls (81) are fixedly mounted at the upper and lower ends of the connecting shaft (8), the limiting balls (81) respectively limitingly rollingly connected inside the adjacent side limiting grooves (61) of the main blades (6) distributed up and down.

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