Power generation device based on variable windward wind of fan blades

Abstract

The power generation device comprises a middle stand column and an impeller mechanism, the impeller mechanism comprises a rotating sleeve rotationally installed at the top of the middle stand column, a plurality of fan blade mechanisms are installed on the rotating sleeve in the circumferential direction of the rotating sleeve in an array mode, and the outer ends of the fan blade mechanisms are connected with gear rings to drive the fan blade mechanisms to horizontally rotate along with the impeller mechanism. The gear ring is meshed with a driven gear at the input end of the generator to transmit torque; the fan blade turning windward mechanism is connected to the middle stand column in a sleeving mode and rotates along the wind facing track ring, the rotating position of the fan blade turning windward mechanism is adjusted according to the wind direction, and the turning state of the fan blades is controlled through sliding of track sliding blocks along fan blade turning tracks of the fan blade turning windward mechanism. The power generation device based on the variable windward fan blades can effectively guide and control the directions of the windward fan blades and the leeward fan blades, and has the advantages that the utilization area of the fan blades is large, the resistance of the fan blades is small, the generated torque is large, the single-machine power generation capacity is high, and the stability is good.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation equipment, and in particular to a power generation device based on wind blades that can be oriented to face the wind. Background Art

[0002] Wind power generation is a form of power generation that converts wind energy into mechanical kinetic energy, and then converts mechanical energy into electrical kinetic energy. Existing wind power generation devices usually adopt a windmill structure, using wind power to drive the windmill blades to rotate, and then increase the speed through a speed increaser to make the generator generate electricity. According to current windmill technology, a breeze speed of about three meters per second can drive the windmill blades to rotate and start generating electricity. Wind power generation has low requirements for the minimum wind speed in the environment, is less affected by the site, wind force, etc., and can be applied to a wider area. At the same time, because wind power generation does not require the use of fuel, does not produce radiation or air pollution, it is a clean and pollution-free renewable energy source. Wind power generation has become an important direction and content in the field of energy research.

[0003] Existing wind turbines are usually divided into horizontal-axis wind turbines and vertical-axis wind turbines. The starting wind speed of horizontal-axis wind turbines is higher than that of vertical-axis wind turbines. They usually need to be installed in large wind farms, and have high requirements for installation space and regional environment. They cannot be used for urban public lighting such as residential areas, and have great limitations. The blades of horizontal-axis wind turbines are installed in the same longitudinal plane through the horizontal axis. Affected by the blade length and starting wind speed, they usually need to be placed at a height of several tens of meters, which brings a lot of inconvenience to the installation, maintenance and overhaul of the generator.

[0004] Compared with horizontal-axis wind turbines, the wind rotors of vertical-axis wind turbines are installed on the same horizontal plane through column supports. The installation height is not affected by the blade size and can be installed at a low height. In addition, the generator of a vertical-axis wind turbine is usually located near the ground, which is convenient for installation and maintenance. At the same time, the starting wind speed of a vertical-axis wind turbine is low, and it has the advantages of breeze starting and no noise, and has broad application prospects. However, in actual applications, it is found that the impeller blades of vertical-axis wind turbines have poor controllability, and there are problems such as the windward blades being unstable to the wind and the leeward blades’ own resistance affecting the rotation of the impellers, which in turn leads to low power generation and low wind energy utilization of vertical-axis wind turbines.

[0005] Based on the above problems, it is necessary to propose a power generation device based on variable windward direction of the wind blades, which can effectively guide and control the direction of the windward blades and leeward blades, so that the wind blades can effectively drive the impeller to rotate, thereby improving the wind utilization rate and power generation efficiency of the vertical axis wind turbine. Summary of the invention

[0006] The present invention proposes a power generation device based on variable-direction windward blades, which can effectively guide and control the directions of windward blades and leeward blades, and has the advantages of large blade utilization area, small blade resistance, large torque generated, high single-machine power generation and good stability.

[0007] In order to achieve the above technical objectives and the above technical effects, the present invention solves the above problems through the following technical solutions:

[0008] The power generation device based on the variable direction of wind blades facing the wind comprises an intermediate column and an impeller mechanism, wherein the impeller mechanism is rotatably mounted on the intermediate column, the impeller mechanism comprises a rotating sleeve rotatably mounted on the top of the intermediate column, a plurality of wind blade mechanisms are arrayed along the circumferential direction of the rotating sleeve, and the outer end of the wind blade mechanism is connected to a gear ring to drive it to rotate horizontally with the impeller mechanism; the wind blade mechanism comprises a connecting shaft connected to the rotating sleeve and the gear ring at both ends respectively, and a wind blade mounted on the connecting shaft and capable of flipping along the axis of the connecting shaft; the gear ring is rotatably connected to the top of the main frame, and the gear ring is meshed with a driven gear at the input end of the generator to transmit torque; a windward track ring is mounted on the inner side of the main frame, and the wind blade variable direction facing wind mechanism is sleeved on the intermediate column and rotates along the windward track ring;

[0009] The fan blade direction-changing and windward facing mechanism comprises a fan blade direction-changing track and a fan blade track support ring which are arranged up and down and connected by longitudinal vertical poles, the fan blade track support ring is sleeved on the middle column and rotated in cooperation with the windward track ring; a windward rudder is installed on the fan blade track support ring, and the windward rudder drives the fan blade direction-changing and windward facing mechanism to rotate to a position where the windward rudder direction is consistent with the wind direction according to the wind direction; the fan blade direction-changing track comprises a semicircular fan blade horizontal rail, and a fan blade direction-changing rail connected to the rails at both ends of the fan blade horizontal rail; the fan blade direction-changing rail is an arc-shaped rail with a downward inclination angle, and the lowest end of the fan blade direction-changing rail forms an angle of 90° with the windward rudder; the fan blade is provided with a track slider which cooperates with the fan blade horizontal rail and the fan blade direction-changing rail, and when the track slider slides to the lowest end of the fan blade direction-changing rail, the corresponding fan blade faces the wind vertically.

[0010] In the above scheme, the wind-facing force of the wind blade drives the impeller mechanism to rotate, and the impeller mechanism drives the gear ring to rotate. The gear ring meshes with the driven gear at the input end of the generator to make the generator generate electricity. A wind-facing mechanism is set to guide the wind for the rotation of the wind blade. The wind rudder drives the wind-facing mechanism to rotate to a position where the wind rudder direction is consistent with the wind direction according to the wind direction. Each wind blade cooperates with the wind blade changing track through the corresponding track slider. When the track slider is located on the horizontal track of the wind blade, the wind blade remains horizontal; when the track slider enters the wind blade changing track for guidance, the wind blade gradually flips, and when it reaches the lowest end of the wind blade changing track, the wind blade turns vertically. Because the lowest end of the wind blade changing track forms a 90° angle with the wind rudder, the wind blade reaching the lowest end of the wind blade changing track is vertically facing the wind. The scheme can effectively control the flipping of the wind blade through the wind blade changing wind mechanism, so that the windward wind blade flips to face the wind, and the leeward wind blade has a small horizontal resistance, which can effectively improve the power generation efficiency.

[0011] Furthermore, the fan blade track support ring includes a fan blade track support outer ring and a fan blade track support inner ring. The fan blade track support outer ring is rotatably matched with the windward track ring, and the fan blade track support inner ring is sleeved on the middle column; the fan blade track support inner ring is connected to the fan blade track support outer ring through at least four fan blade track support connecting rods arranged along the circumference, and the windward rudder is vertically installed on one of the fan blade track support connecting rods that forms a 90° angle with the lowest end of the fan blade turning rail. The windward rudder is a vertical wing plate extending radially along the fan blade track support ring; the lowest end of the fan blade turning rail is equipped with a reinforcement pole connected to the fan blade track support ring, and the lower end of the reinforcement pole is connected to the fan blade track support connecting rod.

[0012] Furthermore, the two ends of the connecting shaft are respectively rotatably connected to the rotating sleeve and the gear ring, and the fan blades are fixed to the connecting shaft and rotate together with the connecting shaft; or the two ends of the connecting shaft are respectively fixed to the rotating sleeve and the gear ring, and the fan blades are connected to the connecting shaft through bearing sleeves, and the fan blades can rotate relative to the connecting shaft.

[0013] Furthermore, the main frame includes an annular bracket for supporting the gear ring at the top, and a plurality of supporting columns for supporting the annular bracket along a circumferential array, and the windward track ring is inscribed and connected to all the supporting columns.

[0014] Furthermore, a plurality of rolling bearings are arranged along the circumference of the outer side of the fan blade track support ring, and the rolling bearings are rollingly matched with the windward track ring to realize the relative rotation of the fan blade track support ring and the windward track ring.

[0015] Furthermore, the fan blade adopts an isosceles trapezoidal structure, and an axis hole matching with the connecting shaft is provided on the symmetry axis of the fan blade.

[0016] Furthermore, the blade surface of the wind blade is made of a textile material with a certain deformation ability.

[0017] The advantages and effects of the present invention are:

[0018] 1. The power generation device proposed by the present invention is provided with a wind blade changing direction mechanism, so that the wind blade facing the wind is 90 degrees with the wind direction, the wind blade utilization area is large, and the torque generated is large; the wind blade facing the leeward is horizontal with the wind direction, the wind blade has small resistance and is easy to rotate. While utilizing the advantages of vertical axis wind turbines, it can effectively improve its wind energy utilization rate and power generation efficiency.

[0019] 2. In the scheme, the input shaft of the generator is meshed with the gear ring through the driven gear. The gear ratio between the gear rings is large, and the requirements for the speed increaser are low. Even the speed increaser is not required to reach the generator speed. It is not only low in cost, but also fully utilizes wind energy and has a high power generation capacity per unit.

[0020] 3. The fan mechanism in the scheme is distributed in a ring array through a rotating sleeve and a gear ring. The structure is stable and easy to install and maintain, and has high wind resistance. In addition, the fan blades can be made small or infinitely large. The fan blades are symmetrically structured isosceles trapezoids, which can simplify the fan blade processing and installation procedures. The structure of this power generation device is simple, easy to maintain, and the entire device can be disassembled for transportation.

[0021] 4. In the scheme, the wind blade turning track and the wind blade track support ring are connected by reinforcing vertical poles. At the same time, a reinforcing vertical pole is arranged at the lowest end of the wind blade turning track for reinforced connection, which can ensure that the connection between the wind blade turning track and the wind blade track support ring is stable, and ensure that the wind rudder drives the wind blade turning track to rotate synchronously, so that the wind blade can be turned to face the wind, improve the utilization rate of wind energy, and then increase the power generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention from a first viewing angle;

[0023] Figure 2 It is a schematic diagram of the structure of the second viewing angle of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the fan blade changing direction to face the wind.

[0025] Figure number identification: 1, middle column, 2, impeller mechanism, 21, rotating sleeve, 22, connecting shaft, 23, fan blade, 231, avoidance groove, 24, track slider, 3, gear ring, 4, main frame, 41, ring bracket, 42, supporting column, 5, generator, 6, driven gear, 7, wind track ring;

[0026] 8. Fan blade direction-changing windward mechanism, 81. Fan blade direction-changing track, 811. Fan blade horizontal track, 812. Fan blade direction-changing track, 82. Fan blade track support ring, 821. Fan blade track support outer ring, 822. Fan blade track support inner ring, 823. Fan blade track support connecting rod, 83. Longitudinal vertical pole, 84. Windward rudder, 85. Rolling bearing, 86. Reinforcement vertical pole. DETAILED DESCRIPTION

[0027] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] The power generation device based on the variable direction of the wind blades in this embodiment is as shown in the attached Figure 1 , 2 As shown, the main body includes an intermediate column 1, an impeller mechanism 2, a gear ring 3, a main frame 4, a generator 5, a driven gear 6, a windward track ring 7, and a blade turning and facing windward mechanism 8. The impeller mechanism 2 is rotatably mounted on the top of the intermediate column 1, and the impeller mechanism 2 includes a rotating sleeve 21 rotatably mounted on the top of the intermediate column 1, and 6 blade mechanisms mounted on the outside of the rotating sleeve 21 along a circumferential array. The outer end of the blade mechanism is connected to the gear ring 3 to drive the gear ring 3 to rotate.

[0029] The fan blade mechanism includes a connecting shaft 22 and a fan blade 23 mounted on the connecting shaft 22 and capable of flipping along the axis of the connecting shaft 22. The inner and outer ends of the connecting shaft 22 are respectively connected to the outer side of the rotating sleeve 21 and the inner side of the gear ring 3 through bearings, and the outer end bearing is mounted on the gear ring 3 through a bearing seat, and the fan blade 23 is fixed to the connecting shaft 22 and rotates synchronously with the connecting shaft 22. Of course, the fan blade 23 self-rotating type can also be adopted, and the two ends of the connecting shaft 22 are respectively fixed to the rotating sleeve 21 and the gear ring 3, and the fan blade 23 is rotatably mounted on the connecting shaft 22 through bearings, and the fan blade 23 and the connecting shaft 22 can rotate relative to each other. In the embodiment, the fan blade 23 adopts an isosceles trapezoidal structure, and an axial hole matching the connecting shaft 22 is provided on the symmetry axis of the isosceles trapezoid. The trapezoidal shape is easier to process, install, and transport than other long arc shapes. The blade surface of the fan blade 23 can be made of a textile material with a certain deformation ability, and a bowl-shaped structure can be formed to bear force when it is positively exposed to wind, so as to better drive the impeller mechanism 2 to rotate.

[0030] The gear ring 3 is rotatably connected to the top of the main frame 4. When the blade 23 is driven by force to drive the blade mechanism to rotate, the gear ring 3 can be driven to rotate horizontally with the middle column 1 as the central axis. The main frame 4 includes an annular bracket 41 that cooperates with the gear ring 3, and a plurality of supporting columns 42 installed along the circumference below the annular bracket 41. In the embodiment, the gear ring 3 is an outer bevel gear ring. The gear ring 3 is meshed with the driven gear 6 at the input end of the generator 5 to transmit torque to enable the generator to generate electricity. The generator 5 is installed on the generator platform.

[0031] In order to effectively guide and control the direction of the windward blades and the leeward blades during the power generation process and improve the power generation of the device, a windward track ring 7 and a blade direction-changing mechanism 8 are provided. Figure 1 , 3The windward track ring 7 is arranged inside the main frame 4 and is inscribed with all the supporting columns 42. The fan blade direction-changing windward mechanism 8 is sleeved on the middle column 1 and rotates along the windward track ring 7.

[0032] As attached Figure 3 As shown, the windward mechanism 8 for changing the direction of the windward blades includes a windward blade changing track 81, a windward blade track support ring 82, a longitudinal vertical rod 83, a windward rudder 84, a rolling bearing 85 and a reinforcing vertical rod 86. The windward blade changing track 81 and the windward blade track support ring 82 are arranged up and down and connected by a plurality of longitudinal vertical rods 83. The windward blade track support ring 82 includes a windward blade track support outer ring 821, a windward blade track support inner ring 822 and a windward blade track support connecting rod 823. The windward blade track support inner ring 822 is sleeved on the middle column 1, and the windward blade track support inner ring 822 is connected to the windward blade track support outer ring 821 through four windward blade track support connecting rods 823 arranged along the circumference. The windward blade track support outer ring 821 is rotatably matched with the windward track ring 7 through a plurality of rolling bearings 85 arranged along the circumference of its outer side, and the rolling bearing 85 is installed on the outer side of the windward blade track support outer ring 821 through a mounting shaft arranged along the radial direction, and the rolling bearing 85 is rolling matched with the track of the windward track ring 7. In order to improve the support stability, the middle column 1 can be provided with a support step that cooperates with the inner ring 822 of the fan blade track support.

[0033] The fan blade turning track 81 is located below the gear ring 3, and includes a semicircular fan blade horizontal track 811 and a fan blade turning track 812 connected to the tracks at both ends of the fan blade horizontal track 811. The fan blade turning track 812 is an arc track with a downward inclination angle, and a reinforcement vertical rod 86 is arranged at the lowest end of the track to connect with the corresponding fan blade track support link 823 below. The fan blade 23 is provided with a track slider 24 that cooperates with the fan blade horizontal track 811 and the fan blade turning track 812. The track slider 24 can slide continuously along the fan blade turning track 81 to guide the fan blade 23 to switch the flip angle. When the track slider 24 slides to the lowest end of the fan blade turning track 812, the corresponding fan blade 23 faces the wind vertically; when the track slider 24 is located at the fan blade horizontal track 811, the corresponding fan blade 23 remains horizontal to reduce wind resistance. In order to prevent the two ends of the fan blade 23 from colliding with the fan blade turning track 81 when the fan blade 23 rotates, a stepped avoidance groove 231 can be opened at both ends of the tail of the fan blade 23.

[0034] The windward rudder 84 is mounted on the blade track support ring 82. In the embodiment, the windward rudder 84 is mounted on one of the blade track support connecting rods 823 that is at a 90° angle to the lowest end of the blade redirecting rail 812. The windward rudder 84 is a vertical wing plate extending radially. Under the action of wind force, the windward rudder 84 will rotate to a position consistent with the wind direction (the vertical wing plate is parallel to the wind direction), and at the same time drive the blade redirecting windward mechanism 8 to rotate. Because the lowest end 812 of the blade redirecting rail 812 is at a 90° angle with the windward rudder 84, the blade 23 that reaches the lowest end of the blade redirecting rail 812 is vertically facing the wind. The blade redirecting windward mechanism 8 will automatically rotate and adjust according to the wind direction to ensure that the three blades 23 that cooperate with the blade redirecting rail 812 are in a windward flipping state.

[0035] The power generation device based on the wind blades being able to change direction to face the wind as described in this embodiment is adopted, and the power generation device is installed in an open and suitable position. The wind blades 23 in the windward state drive the impeller mechanism 2 to rotate under the blowing of the wind, and then drive the gear ring 3 to rotate. The gear ring 3 is meshed with the driven gear 6 at the input end of the generator 5 to transmit torque to make the generator generate electricity. The cooperation between the gear ring 3 and the driven gear 6 has low requirements for the speed increaser, and even the speed increaser can be achieved without the need for the speed increaser. During the power generation process, when the wind direction changes, the wind rudder 84 is adjusted in time according to the wind direction and rotated to a position parallel to the wind direction. The wind direction detector in the wind mechanism 14 controls the rotation of the motor according to the detected wind direction signal, thereby driving the wind blade change direction to face the wind mechanism 8 to rotate synchronously, so that the windward wind blades 23 are 90° with the wind direction, and the leeward wind blades 333 are horizontal with the wind direction. The power generation device described in this scheme has high wind energy utilization and large single-machine power generation.

[0036] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. Various changes, modifications, substitutions and variations of these embodiments without departing from the principle and spirit of the present invention still fall within the protection scope of the present invention.

Claims

1. A power generation device based on a wind blade that can be oriented to face the wind, comprising an intermediate column (1) and an impeller mechanism (2), wherein the impeller mechanism (2) is rotatably mounted on the intermediate column (1), and is characterized in that: The impeller mechanism (2) comprises a rotating sleeve (21) rotatably mounted on the top of the middle column (1); the rotating sleeve (21) is provided with a plurality of fan blade mechanisms arranged in an array along the circumferential direction thereof; the outer ends of the fan blade mechanisms are connected to a gear ring (3) to drive them to rotate horizontally along with the impeller mechanism (2); the fan blade mechanism comprises a connecting shaft (22) whose two ends are respectively connected to the rotating sleeve (21) and the gear ring (3); and a fan blade (23) mounted on the connecting shaft (22) and capable of turning over along the axis of the connecting shaft (22); The gear ring (3) is rotatably connected to the top of the main frame (4), and the gear ring (3) is meshed with a driven gear (6) at the input end of the generator (5) to transmit torque; a windward track ring (7) is installed on the inner side of the main frame (4), and a fan blade direction-changing windward mechanism (8) is sleeved on the middle column (1) and rotates along the windward track ring (7); The fan blade direction-changing and windward facing mechanism (8) comprises a fan blade direction-changing track (81) and a fan blade track support ring (82) which are arranged up and down and connected via a longitudinal vertical rod (83); the fan blade track support ring (82) is sleeved on the middle vertical column (1) and is rotatably matched with the windward track ring (7); a windward rudder (84) is installed on the fan blade track support ring (82); the windward rudder (84) drives the fan blade direction-changing and windward facing mechanism (8) to rotate according to the wind direction until the direction of the windward rudder (84) is consistent with the wind direction. The fan blade direction-changing track (81) comprises a semicircular fan blade horizontal track (811) and a fan blade direction-changing track (812) connected to tracks at both ends of the fan blade horizontal track (811); the fan blade direction-changing track (812) is an arc-shaped track with a downward inclination angle, and the lowest end of the fan blade direction-changing track (812) forms a 90° angle with the wind rudder (84); the fan blade (23) is provided with a track slider (24) that cooperates with the fan blade horizontal track (811) and the fan blade direction-changing track (812), and when the track slider (24) slides to the lowest end of the fan blade direction-changing track (812), the corresponding fan blade (23) faces the wind vertically.

2. The power generation device based on the wind blades being able to change direction to face the wind according to claim 1 is characterized in that: The fan blade track support ring (82) comprises a fan blade track support outer ring (821) and a fan blade track support inner ring (822); the fan blade track support outer ring (821) is rotatably matched with the windward track ring (7); the fan blade track support inner ring (822) is sleeved on the middle column (1); the fan blade track support inner ring (822) is connected to the fan blade track support outer ring (821) via at least four fan blade track support connecting rods (823) arranged along the circumference; the windward rudder (83) is vertically mounted on one of the fan blade track support connecting rods (823) which forms an angle of 90° with the lowest end of the fan blade turning rail (812); the windward rudder (84) is a vertical wing plate extending radially along the fan blade track support ring (82).

3. The power generation device based on the variable direction of the wind blades according to claim 2 is characterized in that: The lowest end of the fan blade turning rail (812) is provided with a reinforcing rod (86) connected to the fan blade track support ring (82), and the lower end of the reinforcing rod (86) is connected to the fan blade track support connecting rod (823).

4. The power generation device based on the wind blades being able to change direction to face the wind according to claim 1 is characterized in that: The two ends of the connecting shaft (22) are rotatably connected to the rotating sleeve (21) and the gear ring (3), respectively; the fan blade (23) is fixedly connected to the connecting shaft (22) and rotates together with the connecting shaft (22); Or the two ends of the connecting shaft (22) are respectively fixed to the rotating sleeve (21) and the gear ring (3), and the fan blade (23) is connected to the connecting shaft (22) through a bearing sleeve, and the fan blade (23) can rotate relative to the connecting shaft (22).

5. The power generation device based on the wind blades being able to change direction to face the wind according to claim 1 is characterized in that: The main frame (4) comprises an annular support (41) for supporting the gear ring (3) at the top, and a plurality of supporting columns (42) for supporting the annular support (41) along a circumferential array, and the wind track ring (7) is internally connected to all the supporting columns (42).

6. The power generation device based on the wind blades being able to change direction to face the wind according to claim 1 is characterized in that: A plurality of rolling bearings (85) are arranged along the circumference of the outer side of the fan blade track support ring (82), and the rolling bearings (85) are rollingly matched with the windward track ring (7) to realize relative rotation of the fan blade track support ring (82) and the windward track ring (7).

7. The power generation device based on the wind blades being able to change direction to face the wind according to any one of claims 1 to 6, characterized in that: The fan blade (23) adopts an isosceles trapezoidal structure, and an axis hole matching the connecting shaft (22) is provided on the symmetry axis of the fan blade (23).

8. The power generation device based on the wind blades being able to change direction to face the wind according to any one of claims 1 to 6, characterized in that: The blade surface of the fan blade (23) is made of a textile material with a certain deformation capability.

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