Wind power generation device

Abstract

The invention relates to the technical field of wind power generation, in particular to a wind power generation device which comprises a center power generation system, at least two edge power generation systems are arranged on the periphery of the center power generation system, the center power generation system comprises a first supporting base, and a first rotating shaft is rotationally installed at the upper end of the first supporting base; the lower end of the first rotating shaft is in transmission connection with a first generator. The device has the advantages that the edge power generation systems are installed around the center power generation system, the airflow directions around the edge power generation systems are changed in the mode that the center power generation system is wide in wind receiving face and easier to start, and therefore starting of the edge power generation systems is accelerated for power generation, the wind power utilization rate is increased, and efficiency is improved; the first blade is installed on the first supporting frame through the fixing mechanism, the inclination angle of the first blade can be adjusted through the inclination angle adjusting mechanism, and the orientation of the wind receiving face is freely adjusted according to the wind power of the located area and the positions of the center power generation system and the edge power generation system.

Description

Technical Field

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

[0002] Wind turbines are divided into two types: horizontal axis and vertical axis. H-type impeller is a common form of vertical axis wind turbine, which has the characteristics of simple structure, easy installation and maintenance, can accept wind from any direction and low noise.

[0003] The Chinese patent application number CN202222695991.2 discloses a vertical axis wind turbine blade, wherein the fixing frame is connected to the blade through a fixing pin, a connecting device is fixed in the middle of the blade, the connecting device fixes and connects the first base material and the second base material of the blade through the fiber composite profile square tube and round tube in the middle, and fixing rings are fixed at the upper and lower ends of the blade. The fixing frame is provided with a connecting body, flanges are welded at the upper and lower ends of the connecting body, a connecting frame is welded on the inner side of the two flanges and in the middle of the connecting body, and a square connecting flange is welded at the outer end of the connecting frame.

[0004] The above patent uses an H-type impeller. Due to structural reasons, the straight-blade impeller has the defects of difficulty in starting at low wind speeds and poor stability during high-speed operation. Summary of the invention

[0005] The present invention proposes a wind power generation device to solve the above problems.

[0006] The technical solution of the present invention is achieved in this way:

[0007] A wind power generation device comprises a central power generation system, wherein at least two edge power generation systems are arranged around the central power generation system, wherein the central power generation system comprises a first support base, a first rotating shaft is rotatably mounted on the upper end of the first support base, a first generator is transmission-connected to the lower end of the first rotating shaft, at least one first support frame is fixed on the side wall of the first rotating shaft along the length direction, at least one fixing mechanism is fixed in an array on the circumference of the first support frame, a first blade is fixed on one side of each of the fixing mechanisms, and one end of the first blade is arranged toward the first rotating shaft, and the edge power generation system comprises a second support base, a second rotating shaft is rotatably mounted on the upper end of the second support base, a second generator is transmission-connected to the lower end of the second rotating shaft, at least one second support frame is fixed on the side wall of the second rotating shaft along the length direction, a second blade is fixed on the end of the second support frame, and at least two second blades are installed around each of the second rotating shafts.

[0008] Furthermore, the first support frame includes a first ring installed in sliding cooperation with the first rotating shaft, a screw fixing the first rotating shaft and the first ring together is threadedly installed on the side wall of the first ring, at least two fixing rods are fixed in a circular array on the outer circumference of the first ring, each end of the fixing rod is installed with a fixing mechanism through a detachable connection, and a reinforcing rib plate is fixed between two adjacent fixing rods.

[0009] Furthermore, the fixing mechanism includes a connecting sleeve sleeved at the end of the fixing rod, a screw fixing the connecting sleeve and the fixing rod together is threadedly installed on the side wall of the connecting sleeve, a fixing frame fixing the first blade is provided on one side of the connecting sleeve, each of the fixing frames is fixed to two first support frames through two connecting sleeves, the connecting sleeve and the fixing frame are fixed together through one to two inclination adjustment mechanisms, and the angle between the connecting sleeve and the fixing frame can be adjusted.

[0010] Furthermore, the inclination adjustment mechanism includes a locking screw threadedly installed at the end of the connecting sleeve, and an adjustment plate hingedly installed at one end of the fixed frame. The adjustment plate is formed with a plurality of adjustment holes along the length direction to cooperate with the locking screw.

[0011] Furthermore, a driving motor is fixed on the outer side wall of the first supporting base, the driving motor and the first rotating shaft are connected via a gear set, and an electromagnetic clutch is installed between the driving motor and the gear set.

[0012] Furthermore, the second support frame includes a second ring installed in sliding cooperation with the second rotating shaft, and a screw fixing the second rotating shaft and the second ring together is threadedly installed on the side wall of the second ring, and at least two support arms are fixed in a circular array on the outer circumference of the second ring, and a second blade is installed on the end of each support arm through a detachable connection, and each second blade is fixed by the support arms fixed on the two second rings, and the two support arms on the same second blade are arranged in an "eight" shape.

[0013] Furthermore, the second blade includes a mounting portion fixed to the support arm, a windward portion is provided on the outer side of the mounting portion, one end of the mounting portion is fixed to the windward portion via a connecting portion, the length of the mounting portion is shorter than the length of the windward portion, an angle between the mounting portion and the windward portion does not exceed 8°, and the other end of the mounting portion is fixed to the windward portion via a reinforcement portion.

[0014] Furthermore, it also includes a connecting frame, and the upper ends of the first rotating shaft and the second rotating shaft are both rotatably connected to the connecting frame.

[0015] Furthermore, the first rotating shaft and the second rotating shaft are transmission connected.

[0016] Furthermore, it includes a first support base, a first rotating shaft arranged vertically is rotatably mounted on the upper end of the first support base through a bearing, a first generator is transmission-connected to the lower end of the first rotating shaft, at least one first support frame is fixed on the side wall of the first rotating shaft along the length direction, at least one fixing mechanism is fixed in an array on the circumference of the first support frame, a first blade is fixed on one side of each fixing mechanism, one end of the first blade is arranged toward the first rotating shaft, at least one second support frame is fixed on the side wall of the first rotating shaft along the length direction, at least one second blade is fixed on the end of the second support frame, a plurality of second blades are distributed in an array along the first rotating shaft, a length of the second support frame exceeds that of the first support frame, a rotation radius of the second blade is greater than a rotation radius of the first blade, the first blade and the second blade are staggered around the first rotating shaft, a distance between the second blade and the first rotating shaft is 1.5-2 times a distance between the first blade and the first rotating shaft, and there is at least one group of second blades, and multiple groups of second blades are fixed by multiple second support frames.

[0017] By adopting the above technical scheme, the beneficial effects of the present invention are as follows: by installing the edge power generation system around the central power generation system, the airflow direction around the edge power generation system is changed in a way that the central power generation system has a wide wind receiving surface and is easier to start, thereby accelerating the start-up of the edge power generation system to generate electricity, increasing the wind power utilization rate and the power generation efficiency; the first blade is installed on the first support frame by a fixing mechanism, and the inclination angle of the first blade can be adjusted by the inclination adjustment mechanism to achieve the adjustment of the wind receiving surface direction according to the wind freedom in the area and the positions of the central power generation system and the edge power generation system; the central power generation system can automatically rotate under the action of external wind force, and can also automatically rotate using a driving motor. The central power generation system can drive the edge power generation system to rotate quickly and enter a working state, thereby improving the starting efficiency of the edge power generation system, and at the same time, it can also increase the rotation speed of the edge power generation system at the same wind speed, thereby increasing the power generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 is a stereogram of the present invention;

[0020] Figure 2 is a top view of the present invention;

[0021] Figure 3 is a stereogram of the central power generation system of the present invention;

[0022] Figure 4 is a front view of the central power generation system of the present invention;

[0023] Figure 5 is a three-dimensional diagram of a first support frame of the present invention;

[0024] Figure 6 It is a structural schematic diagram of the fixing mechanism of the present invention;

[0025] Figure 7 is a three-dimensional diagram of the edge power generation system of the present invention;

[0026] Figure 8 is a cross-sectional view of an edge power generation system of the present invention;

[0027] Fig. 9 is a schematic diagram of the second blade structure of the present invention;

[0028] Fig.10 is a stereogram of Embodiment 2 of the present invention;

[0029] Fig.11 It is a top view of the second embodiment of the present invention.

[0030] The following are the descriptions of the reference numerals:

[0031] 1. Central power generation system; 11. First support base; 12. First generator; 13. First rotating shaft; 14. First support frame; 141. First ring; 142. Fixing rod; 143. Reinforcing rib plate; 15. Fixing mechanism; 151. Connecting sleeve; 152. Fixing frame; 153. Adjusting plate; 154. Adjusting hole; 155. Locking screw; 16. First blade; 17. Electromagnetic clutch; 18. Driving motor; 2. Edge power generation system; 21. Second support base; 22. Second generator; 23. Second rotating shaft; 24. Second support frame; 241. Second ring; 242. Support arm; 25. Second blade; 251. Mounting part; 252. Windward part; 253. First windward slot; 254. Second windward slot; 3. Connecting frame. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Embodiment 1:

[0034] like Figure 1-Figure 9 As shown, a wind power generation device includes a central power generation system 1, and six edge power generation systems 2 are arranged around the central power generation system 1. The central power generation system 1 includes a first support base 11, and a vertically arranged first rotating shaft 13 is rotatably installed on the upper end of the first support base 11 through a bearing, and a first generator 12 is connected to the lower end of the first rotating shaft 13. Two first support frames 14 are fixed on the side wall of the first rotating shaft 13 along the length direction, and five fixing mechanisms 15 are fixed in an array on the circumference of the first support frame 14. A first blade 16 is fixed on one side of each fixing mechanism 15. The first blade 1 6 is arranged toward the first rotating shaft 13, so as to increase the windward surface area of ​​the first blade 16 and facilitate starting under wind. The edge power generation system 2 comprises a second supporting base 21, a second rotating shaft 23 is rotatably mounted on the upper end of the second supporting base 21, a second generator 22 is transmission-connected to the lower end of the second rotating shaft 23, two second supporting frames 24 are fixed on the side wall of the second rotating shaft 23 along the length direction, a second blade 25 is fixed at the end of the second supporting frame 24, five second blades 25 are installed around each second rotating shaft 23, the wind pressure on both sides of the second blade 25 is different, and the second blade 25 is rotated by the wind pressure difference.

[0035] Preferably, the wind pressures on both sides of the central power generation system 1 and the edge power generation system 2 are different, making it easier for them to rotate under the wind.

[0036] In this embodiment, the first support frame 14 includes a first ring 141 that is slidably mounted with the first rotating shaft 13. Screws that fix the first rotating shaft 13 and the first ring 141 together are threadedly mounted on the side wall of the first ring 141. Five fixing rods 142 are fixed in a circular array on the outer circumference of the first ring 141. A fixing mechanism 15 is installed at the end of each fixing rod 142 through a detachable connection, and a reinforcing rib plate 143 is fixed between two adjacent fixing rods 142.

[0037] In this embodiment, the fixing mechanism 15 includes a connecting sleeve 151 that is sleeved on the end of the fixing rod 142. A screw that fixes the connecting sleeve 151 and the fixing rod 142 together is threadedly installed on the side wall of the connecting sleeve 151. A fixing frame 152 for fixing the first blade 16 is provided on one side of the connecting sleeve 151. Each connecting sleeve 151 can be fixed to the fixing frame 152 through a pin at one end and fixed at the other end through an inclination adjustment mechanism. The connecting sleeve 151 can also be fixed to the fixing frame 152 using two inclination adjustment mechanisms. The connecting sleeve 151 and the fixing frame 152 are fixed together through two inclination adjustment mechanisms. The angle between the connecting sleeve 151 and the fixing frame 152 can be adjusted, thereby adjusting the direction of the windward surface of the first blade 16.

[0038] In this embodiment, the inclination adjustment mechanism includes a locking screw 155 installed at the end of the connecting sleeve 151 through a thread, and an adjustment plate 153 with one end hingedly installed at one end of the fixed frame 152. The adjustment plate 153 is formed with two adjustment holes 154 along the length direction and installed in conjunction with the locking screw 155. The angle of the inclination adjustment mechanism can be quickly adjusted by adjusting the positions of the locking screw 155 and the adjustment hole 154.

[0039] In this embodiment, a drive motor 18 is fixed on the outer wall of the first support base 11, and the drive motor 18 is connected to the first rotating shaft 13 through a gear set. An electromagnetic clutch 17 is installed between the drive motor 18 and the gear set. When the wind is strong, the electromagnetic clutch 17 is in a disconnected state to reduce the resistance of the first rotating shaft 13 during rotation. When the wind is weak, the electromagnetic clutch 17 can be controlled to close, and the drive motor 18 drives the first rotating shaft 13 to rotate, thereby generating high-speed wind around the edge power generation system 2, driving the edge power generation system 2 to start working, and after the edge power generation system 2 works stably, the drive motor 18 is stopped and the electromagnetic clutch 17 is disconnected.

[0040] In this embodiment, the second support frame 24 includes a second ring 241 that is slidably mounted with the second rotating shaft 23. Screws that fix the second rotating shaft 23 and the second ring 241 together are threadedly mounted on the side wall of the second ring 241. Five support arms 242 are fixed in a circular array on the outer circumference of the second ring 241. A second blade 25 is installed at the end of each support arm 242 through a detachable connection. Each second blade 25 is fixed by a support arm 242 fixed on two second rings 241. The two support arms 242 on the same second blade 25 are arranged in an "eight" shape, and the positions of the two second support frames 24 can be adjusted according to the length of the second blade 25.

[0041] In this embodiment, the second blade 25 includes a mounting portion 251 fixed to the support arm 242, a windward portion 252 is arranged on the outer side of the mounting portion 251, one end of the mounting portion 251 is fixed to the windward portion 252 through a connecting portion 253, the end face of the mounting plate 253 is arc-shaped, the length of the mounting portion 251 is shorter than the length of the windward portion 252, the angle between the mounting portion 251 and the windward portion 252 is 5°, the other end of the mounting portion 251 is fixed to the windward portion 252 through a reinforcing portion 254, the mounting portion 251 and the windward portion 252 are fixed to the connecting portion 253 and the reinforcing portion 254 through rivets, and the production and processing of the second blade 25 is facilitated by splitting the mounting plate 251, the windward portion 252, the connecting portion 253 and the reinforcing portion 254 into multiple components.

[0042] In this embodiment, a connecting frame 3 is further included. The upper ends of the first rotating shaft 13 and the second rotating shaft 23 are both rotatably connected to the connecting frame 3, so that the central power generation system 1 and the edge power generation system 2 can be connected as a whole to improve stability.

[0043] In this embodiment, the first rotating shaft 13 and the second rotating shaft 23 are in transmission connection, and the central power generation system 1 and the edge power generation system 2 can rotate synchronously to generate electricity.

[0044] Embodiment 2:

[0045] like Fig.10 , 11 As shown, as another embodiment of the present invention, a wind power generation device includes a first support base 11, a vertically arranged first rotating shaft 13 is rotatably installed on the upper end of the first support base 11 through a bearing, a first generator 12 is transmission-connected to the lower end of the first rotating shaft 13, a first support frame 14 is fixed on the side wall of the first rotating shaft 13 along the length direction, five fixing mechanisms 15 are fixed in an array on the circumference of the first support frame 14, a first blade 16 is fixed on one side of each fixing mechanism 15, one end of the first blade 16 is arranged toward the first rotating shaft 13, two second support frames 24 are fixed on the side wall of the first rotating shaft 13 along the length direction, and each end of the second support frame 24 is fixed There are five second blades 25, and multiple second blades 25 are distributed in an array along the first rotating shaft 13. The length of the second support frame 24 exceeds the first support frame 14. The rotation radius of the second blade 25 is greater than the rotation radius of the first blade 16. The first blade 16 and the second blade 25 are staggered around the first rotating shaft 13. The distance between the second blade 25 and the first rotating shaft 13 is 1.5-2 times the distance between the first blade 16 and the first rotating shaft 13. There are two groups of second blades 25, and the two groups of second blades 25 are fixed by two second support frames 24. The first rotating shaft 13 is driven to rotate synchronously by the first blade 16 and the second blade 25, thereby driving the first generator 12 to work and generate electricity.

[0046] The working principle of the present invention is as follows: when in use, it is fixed in an area with abundant wind resources, and when the wind blows, it can drive the central power generation system 1 or the edge power generation system 2 to rotate. Since the wind receiving surface of the first blade 16 is wider, the central power generation system 1 is easier to rotate in a breeze. When the central power generation system 1 rotates, a vortex will be formed around the edge power generation system 2, thereby changing the flow direction of the wind around the central power generation system 1, thereby changing the wind flowing through the second blade 25. Since the wind speeds on the upwind side and the downwind side of the second blade 25 are different, the pressures of the airflow on the two sides are different, and there is a pressure difference. Under the action of this pressure difference, the edge power generation system 2 can quickly break the dynamic and static balance and rotate. When the central power generation system 1 and the edge power generation system 2 rotate, electrical energy can be generated by the first generator 12 and the second generator 22, thereby realizing the conversion of wind energy into electrical energy. Since multiple edge power generation systems 2 are arranged around the central power generation system 1, when the environmental wind force is relatively small, the first blade 16 can also be driven to rotate by the electric start drive motor 18 to generate wind force to drive multiple edge power generation systems 2 to work and generate electricity.

[0047] The circuit connection involved in the present invention is a common method used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments, and it belongs to the widely used existing technology.

[0048] Components not described in detail herein are prior art.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A wind power generation device, characterized in that: The invention comprises a central power generation system (1), wherein at least two edge power generation systems (2) are arranged around the central power generation system (1), wherein the central power generation system (1) comprises a first support base (11), wherein a first rotating shaft (13) is rotatably mounted on the upper end of the first support base (11), wherein a first generator (12) is transmission-connected to the lower end of the first rotating shaft (13), wherein at least one first support frame (14) is fixed on the side wall of the first rotating shaft (13) along the length direction, wherein at least one fixing mechanism (15) is fixed in an array on the circumference of the first support frame (14), wherein each fixing mechanism (15) is fixed on one side A first blade (16) is provided, one end of the first blade (16) is arranged toward the first rotating shaft (13), the edge power generation system (2) comprises a second support base (21), a second rotating shaft (23) is rotatably mounted on the upper end of the second support base (21), a second generator (22) is transmission-connected to the lower end of the second rotating shaft (23), at least one second support frame (24) is fixed on the side wall of the second rotating shaft (23) along the length direction, a second blade (25) is fixed on the end of the second support frame (24), and at least two second blades (25) are mounted around each second rotating shaft (23).

2. A wind power generation device according to claim 1, characterized in that: The first support frame (14) comprises a first ring (141) which is installed in a sliding manner with the first rotating shaft (13); a screw is threadedly installed on the side wall of the first ring (141) to fix the first rotating shaft (13) and the first ring (141); at least two fixing rods (142) are fixed in an annular array on the outer circumference of the first ring (141); a fixing mechanism (15) is installed at the end of each fixing rod (142) through a detachable connection; and a reinforcing rib plate (143) is fixed between two adjacent fixing rods (142).

3. A wind power generation device according to claim 2, characterized in that: The fixing mechanism (15) comprises a connecting sleeve (151) sleeved on the end of the fixing rod (142); a screw for fixing the connecting sleeve (151) and the fixing rod (142) together is threadedly installed on the side wall of the connecting sleeve (151); a fixing frame (152) for fixing the first blade (16) is arranged on one side of the connecting sleeve (151); each fixing frame (152) is fixed to two first support frames (14) through two connecting sleeves (151); the connecting sleeve (151) and the fixing frame (152) are fixed together through one or two inclination adjustment mechanisms; and the angle between the connecting sleeve (151) and the fixing frame (152) can be adjusted.

4. A wind power generation device according to claim 3, characterized in that: The tilt adjustment mechanism comprises a locking screw (155) threadedly mounted on the end of the connecting sleeve (151), and an adjustment plate (153) hingedly mounted at one end of the fixing frame (152); the adjustment plate (153) is formed with a plurality of adjustment holes (154) along the length direction and mounted in cooperation with the locking screw (155).

5. A wind power generation device according to claim 1, characterized in that: A driving motor (18) is fixed on the outer wall of the first supporting base (11); the driving motor (18) and the first rotating shaft (13) are connected via a gear set; an electromagnetic clutch (17) is installed between the driving motor (18) and the gear set.

6. A wind power generation device according to claim 1, characterized in that: The second support frame (24) comprises a second sleeve (241) which is slidably mounted with the second rotating shaft (23); a screw for fixing the second rotating shaft (23) and the second sleeve (241) together is threadedly mounted on the side wall of the second sleeve (241); at least two support arms (242) are fixed in an annular array on the outer circumference of the second sleeve (241); a second blade (25) is detachably mounted on the end of each support arm (242); each second blade (25) is fixed by a support arm (242) fixed on two second sleeves (241); and the two support arms (242) on the same second blade (25) are arranged in an "eight" shape.

7. A wind power generation device according to claim 6, characterized in that: The second blade (25) comprises a mounting portion (251) fixed to the support arm (242); a windward portion (252) is arranged on the outer side of the mounting portion (251); one end of the mounting portion (251) is fixed to the windward portion (252) via a connecting portion (253); the length of the mounting portion (251) is shorter than the length of the windward portion (252); an angle between the mounting portion (251) and the windward portion (252) does not exceed 8°; and the other end of the mounting portion (251) is fixed to the windward portion (252) via a reinforcing portion (254).

8. A wind power generation device according to claim 1, characterized in that: It also comprises a connecting frame (3), and the upper ends of the first rotating shaft (13) and the second rotating shaft (23) are both rotatably connected to the connecting frame (3).

9. A wind power generation device according to claim 8, characterized in that: The first rotating shaft (13) and the second rotating shaft (23) are transmission connected.

10. A wind power generation device, characterized in that: The invention comprises a first support base (11), a first rotating shaft (13) arranged vertically is rotatably mounted on the upper end of the first support base (11) via a bearing, a first generator (12) is drivingly connected to the lower end of the first rotating shaft (13), at least one first support frame (14) is fixed on the side wall of the first rotating shaft (13) along the length direction, at least one fixing mechanism (15) is fixed in an array on the circumference of the first support frame (14), a first blade (16) is fixed on one side of each fixing mechanism (15), one end of the first blade (16) is arranged toward the first rotating shaft (13), at least one second support frame (24) is fixed on the side wall of the first rotating shaft (13) along the length direction, and the second support frame (24) is fixed on the side wall of the first rotating shaft (13) along the length direction. At least one second blade (25) is fixed to the end of the support frame (24), and the plurality of second blades (25) are distributed in an array along the first rotating shaft (13); the length of the second support frame (24) exceeds that of the first support frame (14); the rotation radius of the second blade (25) is greater than that of the first blade (16); the first blade (16) and the second blade (25) are alternately arranged around the first rotating shaft (13); the distance between the second blade (25) and the first rotating shaft (13) is 1.5 to 2 times the distance between the first blade (16) and the first rotating shaft (13); there is at least one group of the second blades (25), and the plurality of groups of the second blades (25) are fixed by the plurality of second support frames (24).

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