Multi-blade wind turbine

Abstract

The present invention relates to the technical field of wind power generation, and provides a multi-blade wind turbine. The multi-blade wind turbine comprises a bottom plate, wherein a support is mounted at the upper end of the bottom plate, and a working housing is mounted at the upper end of the support; a generator is provided in a first working chamber inside the working housing, and an electric motor shaft of the generator is connected to a first rotating shaft by means of a speed-increasing and heat-dissipating mechanism; the first rotating shaft passes through the front end of the working housing and is fixedly connected to a rotating cylinder; the working housing is rotatably connected to the rotating cylinder, and a cavity is provided in the rotating cylinder; an electric motor is fixedly provided in the cavity, the electric motor is fixedly connected to a first bevel gear, and a plurality of second bevel gears circumferentially and evenly mesh with the first bevel gear; three second bevel gears are provided; and the plurality of second bevel gears are fixedly connected to a plurality of fixing shafts in a one-to-one correspondence, and each fixing shaft passes through the side end of the cavity and is connected to a blade. The provision of the speed-increasing and heat-dissipating mechanism combines a speed-increasing function and a heat-dissipating function, so that space is saved on, and when the electric motor shaft is accelerated, heat dissipation of the generator is performed synchronously.

Description

A multi-blade wind turbine Technical Field

[0001] The present invention relates to the technical field of wind power generation, in particular to a multi-blade wind turbine. Background Art

[0002] The principle of wind power generation is to use wind power to drive the windmill blades to rotate, and then increase the speed of the rotation through a speed increaser to drive the generator to generate electricity. At present, most wind energy conversion systems use horizontal axis wind turbines, that is, three blades are installed on a horizontal axis, relying on wind power and the inclination of the windward surface of the blades to generate thrust, which drives the generator to rotate to generate electricity.

[0003] When the wind is strong, the force acting on the blades increases, causing the blade rotation speed to increase accordingly. The input power of the generator will increase, and the output voltage and frequency will increase. However, when the wind level is too high, the generator motor shaft will rotate too fast, seriously affecting the service life of the generator. In the process of wind power generation, the generator will generate a lot of heat. If the generator is not cooled, it will affect the normal operation of the generator and even the service life of the generator. Summary of the Invention

[0004] The present invention provides a multi-blade wind turbine to solve at least one of the technical problems mentioned above: when the wind level is too high, the rotation speed of the generator motor shaft will be too fast, seriously affecting the service life of the generator; and during the process of wind power generation, the generator will generate a large amount of heat, which will affect the normal operation of the generator and even the service life of the generator if the heat is not dissipated.

[0005] In order to solve the above technical problems, the present invention discloses a multi-blade wind turbine, comprising a base plate, a bracket installed on the upper end of the base plate, a working shell installed on the upper end of the bracket, a generator provided in a working chamber inside the working shell, the motor shaft of the generator is connected to a rotating shaft one through a speed-increasing and heat-dissipating mechanism, the rotating shaft one passes through the front end of the working shell and is fixedly connected to a rotating cylinder, the working shell is rotatably connected to the rotating cylinder, a cavity is provided inside the rotating cylinder, a motor is fixedly provided in the cavity, the motor is fixedly connected to a bevel gear one, a plurality of bevel gears two are evenly meshed with the bevel gear in a circumferential direction, the plurality of bevel gears two are fixedly connected to a plurality of fixed shafts in a one-to-one correspondence, and the fixed shaft passes through the side end of the cavity and is fixedly connected to the blades.

[0006] Preferably, the generator is fixedly connected to the mounting plate 1, and the mounting plate 1 is fixedly installed in the working chamber 1 inside the working shell. The working chamber 2 is also provided inside the working shell, and an annular groove is connected between the working chambers 1 and 2.

[0007] Preferably, the speed-increasing heat dissipation mechanism includes a gear sleeve, which is rotatably connected to the annular groove. The gear sleeve in the working chamber one is connected to a gear ring one, and three gears one are circumferentially meshed with the gear ring. Gear one is fixedly connected to the connecting shaft one, gear one is meshed with gear three, gear three is meshed with gear four, gear four is fixedly connected to the motor shaft, gear three is fixedly connected to the fan blade through the connecting shaft two, both the connecting shaft one and the connecting shaft two are rotatably connected to the front end of the working chamber one, and the gear sleeve in the working chamber two is fixedly connected to the rotating shaft one through a fixed plate.

[0008] Preferably, a locking mechanism is provided in the cavity, and the locking mechanism includes a limiting bevel gear, and the limiting bevel gear is circumferentially meshed with a plurality of bevel gears 2, the limiting bevel gear is fixedly connected to the sliding plate, and a plurality of connecting rods are evenly distributed circumferentially on the sliding plate, the connecting rods are fixedly connected to the rough arc block, the rough arc block corresponds to the fixed shaft, the sliding plate is slidably connected to the cavity, and the end of the sliding plate away from the limiting bevel gear is fixedly connected to the magnetic block, the magnetic block is correspondingly arranged to the electromagnetic block, the electromagnetic block is fixedly arranged in the cavity, and a plurality of spring rods are fixedly arranged between the sliding plate and the cavity.

[0009] Preferably, a sealing sleeve is rotatably provided between the fixed shaft and the rotating cylinder.

[0010] Preferably, the working chamber 1 is connected to a ventilation mechanism, which includes an air inlet arranged at the side end of the working shell, a filter screen is arranged at an angle corresponding to the air inlet, an air outlet is arranged at the rear end of the working shell, a rotating shaft 2 is rotatably provided in the air outlet, and the rotating shaft 2 is fixedly connected to the air outlet plate. The air inlet, the working chamber 1 and the air outlet are connected in sequence.

[0011] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The speed-increasing and heat-dissipating mechanism combines the speed-increasing and heat-dissipating functions, saving space and dissipating heat to the generator simultaneously while speeding up the motor shaft;

[0014] 2. The motor drives bevel gear 1 to rotate, bevel gear 1 drives bevel gear 2 to rotate, bevel gear 2 drives the fixed shaft to rotate, and the fixed shaft drives the blades to rotate with the fixed shaft as the center. The windward angle of the blades is adjusted to keep the motor shaft speed at the target speed, ensuring the safe operation of the generator. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] FIG1 is a schematic structural diagram of the present invention;

[0017] FIG2 is a schematic diagram of the interior of the working shell and the rotating drum of the present invention;

[0018] FIG3 is a schematic diagram of the internal structure of the rotating drum of the present invention;

[0019] FIG4 is a schematic diagram of the internal side structure of the rotating drum of the present invention;

[0020] FIG5 is a schematic diagram of the internal side structure of the working shell of the present invention.

[0021] In the figure: 1. bracket; 2. bottom plate; 3. blade; 4. rotating cylinder; 5. working shell; 6. motor; 7. bevel gear 1; 8. bevel gear 2; 9. fixed shaft; 10. sealing sleeve; 11. electromagnetic block; 12. magnetic block; 13. sliding plate; 14. spring rod; 15. limiting bevel gear; 16. connecting rod; 17. rough arc block; 18. cavity; 20. rotating shaft 1; 21. generator; 22. air outlet plate; 23. mounting plate 1; 24. gear sleeve; 25. rotating shaft 2; 26. gear 1; 27. gear 4; 28. gear 3; 29. ​​fan blade; 34. air inlet; 35. filter; 40. fixed plate; 69. working chamber 1. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0023] In addition, in the present invention, descriptions such as "first" and "second" are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but this must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0024] The present invention provides the following embodiments Example 1

[0025] An embodiment of the present invention provides a multi-blade wind turbine, as shown in Figures 1 to 4, comprising a base plate 2, a bracket 1 being mounted on the upper end of the base plate 2, a working shell 5 being mounted on the upper end of the bracket 1, a generator 21 being disposed in a working chamber 169 inside the working shell 5, a motor shaft of the generator 21 being connected to a rotating shaft 120 via a speed-increasing heat dissipation mechanism, the rotating shaft 120 passing through the front end of the working shell 5 and being fixedly connected to a rotating cylinder 4, the working shell 5 being rotatably connected to the rotating cylinder 4, a cavity 18 being disposed inside the rotating cylinder 4, a motor 6 being fixedly disposed in the cavity 18, the motor 6 being fixedly connected to a bevel gear 17, the bevel gear 17 being circumferentially evenly meshed with a plurality of bevel gears 28, the plurality of bevel gears 28 being three in number, the plurality of bevel gears 28 being fixedly connected to a plurality of fixed shafts 9 in a one-to-one correspondence, the fixed shaft 9 passing through the side end of the cavity 18 and being fixedly connected to the blades 3;

[0026] The generator 21 is fixedly connected to the mounting plate 1 23, and the mounting plate 1 23 is fixedly installed in the working chamber 1 69 inside the working shell 5. The working shell 5 also has a working chamber 2. An annular groove is connected between the working chamber 1 69 and the working chamber 2.

[0027] The speed-increasing heat dissipation mechanism includes a gear sleeve 24, which is rotatably connected to the annular groove. The gear sleeve 24 in the working chamber 1 69 is connected to a gear ring 1, and three gears 1 26 are circumferentially meshed with the gear ring. Gear 1 26 is fixedly connected to the connecting shaft 1, gear 1 26 is meshed with gear 3 28, gear 3 28 is meshed with gear 4 27, gear 4 27 is fixedly connected to the motor shaft, gear 3 28 is fixedly connected to the fan blade 29 through the connecting shaft 2, both the connecting shaft 1 and the connecting shaft 2 are rotatably connected to the front end of the working chamber 1 69, and the gear sleeve 24 in the working chamber 2 is fixedly connected to the rotating shaft 1 20 through the fixing plate 40.

[0028] The beneficial effects of the above technical solution are:

[0029] When the wind drives the blades 3 to rotate, the blades 3 drive the rotating cylinder 4 to rotate, the rotating cylinder 4 drives the rotating shaft 20 to rotate, the rotating shaft 20 drives the fixed plate 40 in the speed-increasing heat dissipation mechanism to rotate, the fixed plate 40 drives the gear sleeve 24 to rotate, and the annular groove guides the rotation of the gear sleeve 24. The ring gear 1 of the gear sleeve 24 drives the gear 1 26 to rotate, the gear 1 26 drives the gear 3 28 to rotate, the gear 3 28 drives the gear 4 27 to rotate, and the gear 4 27 drives the motor shaft of the generator 21 to rotate, so that the generator 21 starts to work. The ring gear 1, gear 1 26, gear 3 28 and gear 4 27 in the gear sleeve 24 constitute a speed-increasing component. , which can increase the speed of the motor shaft, and when the gear three 28 rotates, it also drives the blades 29 to rotate. The blades 29 are distributed on the upper side and left and right sides of the generator 21. When the blades 29 rotate, they can increase the air flow rate on the surface of the generator 21, dissipate heat for the generator 21, and the setting of the speed-increasing and heat-dissipating mechanism combines the speed-increasing function and the heat-dissipating function, saving space. When the motor shaft is accelerated, the generator 21 is dissipated simultaneously, solving the technical problem that the generator generates a lot of heat during wind power generation. If the generator is not dissipated, the normal operation of the generator and even the service life of the generator will be affected;

[0030] The motor 6 drives the bevel gear 1 7 to rotate, the bevel gear 1 7 drives the bevel gear 2 8 to rotate, the bevel gear 2 8 drives the fixed shaft 9 to rotate, and the fixed shaft 9 drives the blade 3 to rotate with the fixed shaft 9 as the center, and adjusts the windward angle of the blade 3, thereby changing the rotation speed of the blade 3 and the rotating cylinder 4 connected thereto, so that the rotation speed of the motor shaft is maintained at the target rotation speed. The target rotation speed of the motor shaft is the motor shaft rotation speed required for the rated power of the generator 21. When the wind force level is too high and the motor shaft rotation speed of the generator 21 is too large, the motor 6 is controlled to work, and the rotation speed of the motor shaft is reduced by changing the windward angle of the blade 3, which protects the generator 21 and solves the technical problem that when the wind force level is too high, the rotation speed of the generator motor shaft is too fast, which seriously affects the service life of the generator. Example 2

[0031] On the basis of Example 1, as shown in Figures 1 to 3, a locking mechanism is provided in the cavity 18, which includes a limiting bevel gear 15. The limiting bevel gear 15 is circumferentially meshed with a plurality of bevel gears 8. The limiting bevel gear 15 is fixedly connected to the sliding plate 13. The sliding plate 13 is evenly circumferentially provided with a plurality of connecting rods 16. The connecting rods 16 are fixedly connected to the rough arc block 17. The rough arc block 17 corresponds to the fixed shaft 9. The sliding plate 13 is slidably connected to the cavity 18. One end of the sliding plate 13 away from the limiting bevel gear 15 is fixedly connected to the magnetic block 12. The magnetic block 12 is correspondingly arranged with the electromagnetic block 11. The electromagnetic block 11 is fixedly arranged in the cavity 18. A plurality of spring rods 14 are fixedly provided between the sliding plate 13 and the cavity 18.

[0032] A sealing sleeve 10 is rotatably provided between the fixed shaft 9 and the rotating cylinder 4 .

[0033] The beneficial effects of the above technical solution are:

[0034] The limiting bevel gear 15 is arranged on the front side of the cavity 18, and the bevel gear 1 7 is arranged on the rear side of the cavity 18. When the windward angle of the blade 3 remains fixed, the limiting bevel gear 15 and the bevel gear 2 8 remain engaged, limiting the bevel gear 2 8, so that the blade 3 and the rotating cylinder 4 remain fixed. The setting of the limiting bevel gear 15 improves the limiting effect of the bevel gear 2 8. The rough arc block 17 cooperates with the fixed shaft 9. The rough arc block 17 is a semicircular block, and a rough layer is provided in the semicircular cavity of the semicircular block, which increases the friction between the rough arc block 17 and the fixed shaft 9, improves the limiting effect between the fixed shaft 9 and the rough arc block 17, and further improves the stability between the blade 3 and the rotating cylinder 4. When the motor 6 is working, the electromagnetic block 11 is first energized, and the adsorption force between the electromagnetic block 11 and the magnetic block 12 drives the sliding plate 13 to slide, and the sliding plate 13 drives the limiting The bevel gear 15 is disengaged from the bevel gear 2 8, and the rough arc block 17 is disengaged from the fixed shaft 9. The spring rod is compressed. At this time, when the bevel gear 1 7 rotates, it can drive the bevel gear 2 8 to rotate, which is used to adjust the windward angle of the blade 3. After the windward angle of the blade 3 is adjusted, the motor 6 stops working, and the electromagnetic block 11 is powered off. Under the elastic action of the spring rod 14, the limiting bevel gear 15 and the rough arc block 17 return to their original positions, and the bevel gear 2 8 and the fixed shaft 9 are re-limited. The setting of the locking mechanism locks the blade 3 to prevent relative rotation between the blade 3 and the rotating cylinder 4 caused by excessive wind force, and also to avoid limiting the bevel gear 2 8 only by the motor 6 and the bevel gear 1 7, which may easily damage the motor 6 and the bevel gear 1 7. The setting of the sealing sleeve 10 prevents external dust and impurities from entering the cavity 18, affecting the service life of the components in the cavity 18. Example 3

[0035] On the basis of Example 1, as shown in Figures 1 to 5, the working chamber 1 69 is connected to a ventilation mechanism, which includes an air inlet 34 arranged at the side end of the working shell 5, a filter screen 35 is arranged at an angle corresponding to the air inlet 34, and an air outlet is provided at the rear end of the working shell 5. A rotating shaft 25 is rotatably provided in the air outlet, and the rotating shaft 25 is fixedly connected to the air outlet plate 22. The air outlet plate 22 is arranged at an angle, and the air inlet 34, the working chamber 1 69 and the air outlet are connected in sequence.

[0036] The beneficial effects of the above technical solution are:

[0037] By setting the air inlet 34 and the air outlet, the air in the working chamber 69 circulates, which is convenient for dissipating heat to the generator 21. By setting the filter 35, dust and impurities from the outside are prevented from entering the working chamber 69, which affects the service life of the parts in the working chamber 69. An air outlet plate 22 is set at the air outlet. The air outlet plate 22 is set at an angle. The air outlet plate 22 can only rotate when the air in the working chamber 69 is discharged to the outside, and the outside air cannot enter the working chamber 69 through the air outlet. The setting of the air outlet plate 22 guides the flow direction of the air, so that the air can flow along the air inlet 34, the working chamber 69 and the air outlet in turn.

[0038] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A multi-blade wind turbine, characterized in that: The invention comprises a bottom plate (2), a bracket (1) being mounted on the upper end of the bottom plate (2), a working shell (5) being mounted on the upper end of the bracket (1), a generator (21) being arranged in a working chamber (69) inside the working shell (5), a motor shaft of the generator (21) being connected to a rotating shaft (20) through a speed increasing and heat dissipating mechanism, the rotating shaft (20) passing through the front end of the working shell (5) and being fixedly connected to a rotating cylinder (4), the working shell (5) being rotatably connected to the rotating cylinder (4), a cavity (18) being arranged inside the rotating cylinder (4), a motor (6) being fixedly arranged in the cavity (18), the motor (6) being fixedly connected to a bevel gear (7), a plurality of bevel gears (8) being uniformly meshed with the bevel gear (7) in the circumferential direction, the plurality of bevel gears (8) being fixedly connected to a plurality of fixed shafts (9) in a one-to-one correspondence, the fixed shaft (9) passing through the side end of the cavity (18) and being fixedly connected to the blade (3); The generator (21) is fixedly connected to the first mounting plate (23), and the first mounting plate (23) is fixedly mounted in the first working chamber (69) inside the working shell (5). The working shell (5) is also provided with a second working chamber, and an annular groove is connected between the first working chamber (69) and the second working chamber; The speed increasing and heat dissipation mechanism comprises a gear sleeve (24), the gear sleeve (24) is rotatably connected to the annular groove, the gear sleeve (24) in the working chamber 1 (69) is connected to a gear ring 1, the gear ring is circumferentially meshed with three gears 1 (26), the gear 1 (26) is fixedly connected to the connecting shaft 1, the gear 1 (26) is meshed with the gear 3 (28), the gear 3 (28) is meshed with the gear 4 (27), the gear 4 (27) is fixedly connected to the motor shaft, the gear 3 (28) is fixedly connected to the fan blade (29) via the connecting shaft 2, the connecting shaft 1 and the connecting shaft 2 are both rotatably connected to the front end of the working chamber 1 (69), and the gear sleeve (24) in the working chamber 2 is fixedly connected to the rotating shaft 1 (20) via a fixing plate (40); A locking mechanism is provided in the cavity (18), the locking mechanism comprising a limiting bevel gear (15), the limiting bevel gear (15) being meshed with a plurality of bevel gears (8) in a circumferential direction, the limiting bevel gear (15) being fixedly connected to the sliding plate (13), the sliding plate (13) being evenly provided with a plurality of connecting rods (16) in a circumferential direction, the connecting rods (16) being fixedly connected to the rough arc block (17), the rough arc block (17) being matched with the fixed shaft (9), the sliding plate (13) being slidably connected to the cavity (18), one end of the sliding plate (13) away from the limiting bevel gear (15) being fixedly connected to the magnetic block (12), the magnetic block (12) being arranged correspondingly to the electromagnetic block (11), the electromagnetic block (11) being fixedly arranged in the cavity (18), and a plurality of spring rods (14) being fixedly arranged between the sliding plate (13) and the cavity (18).

2. A multi-blade wind turbine according to claim 1, characterized in that: A sealing sleeve (10) is rotatably provided between the fixed shaft (9) and the rotating cylinder (4).

3. A multi-blade wind turbine according to claim 1, characterized in that: The working chamber 1 (69) is connected to a ventilation mechanism, which comprises an air inlet (34) arranged at a side end of the working shell (5), a filter screen (35) being arranged obliquely corresponding to the air inlet (34), an air outlet being arranged at the rear end of the working shell (5), a rotating shaft 2 (25) being rotatably arranged in the air outlet, the rotating shaft 2 (25) being fixedly connected to the air outlet plate (22), and the air inlet (34), the working chamber 1 (69) and the air outlet being connected in sequence.

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