Miniature wind driven generator

Abstract

The utility model discloses a small and micro wind driven generator, which belongs to the technical field of wind power generation and comprises mounting blocks, blade components and limiting components, the mounting blocks are annularly distributed at equal intervals, generators are mounted in the mounting blocks, and each blade component comprises a fixed blade and a movable blade. A group of blade components is mounted on each mounting block which is annularly distributed at equal intervals, a generator is mounted in each mounting block, the blade components are connected with rotating shafts of the generators through connecting cylinders, and fixed blades and movable blades are connected together through limiting components. The limiting assembly can enable the movable blade to rotate by releasing limiting, and when the movable blade rotates, the included angle between the movable blade and the fixed blade can be changed, so that the windward area of the whole blade assembly is changed, and when the blade assembly is used in an area with a high wind speed, the windward area of the blade can be reduced, and the rotating speed is kept in an optimal working interval; and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation, and more specifically, to a small and micro wind turbine generator. Background Art

[0002] A small wind turbine generator is a device that converts wind energy into electrical energy and is usually used to provide electricity for households, farms, remote areas or small commercial facilities. Compared with large wind turbines, small wind turbine generators are smaller in scale and are suitable for decentralized power generation and off-grid applications.

[0003] Chinese Patent Grant Publication No.: CN220957505U provides a small wind power generation device. In this solution, the third motor drives the second threaded rod to rotate, the second threaded rod drives the connecting plate to move, the connecting plate drives the pin rod to move, and the pin rod is separated from the pin hole. At this time, the first motor can drive the first threaded rod to rotate, the first threaded rod drives the connecting rod to move, the connecting rod drives the support plate to move, the support plate drives the inclined rod to move, and the inclined rod can drive the generator to move downward. After the generator is moved to the lowest position, by removing the steel cable and then flipping the generator, the maintenance work can be carried out. By using this device, efficient and rapid maintenance work can be achieved, without the need for working at heights and without potential safety hazards, which brings great convenience to the maintenance work.

[0004] Wind resources vary in different regions. When the wind resources are relatively rich, the wind speed will be relatively fast. At this time, the blades of the power generation mechanism will rotate at a relatively fast speed. The high-speed rotation will accelerate the wear of mechanical components, and at the same time, the blades are also prone to rotate too fast, which affects their service life.

[0005] Therefore, a small and micro wind turbine generator is proposed to solve the above problems. Summary of the Utility Model

[0006] 1. Technical Problems to be Solved

[0007] The utility model provides a small and micro wind turbine generator, which can solve the problems existing in the related technologies: when the wind speed is too fast, the blades of the power generation mechanism will rotate at a relatively fast speed. The high-speed rotation will accelerate the wear of mechanical components, and at the same time, the blades are also prone to rotate too fast, which affects their service life.

[0008] 2. Technical Solutions

[0009] To solve the above problems, the utility model adopts the following technical solutions.

[0010] An embodiment of the present application provides a small and gentle wind power generator, including: mounting blocks distributed annularly and equidistantly, a blade assembly, and a limiting assembly. A generator is installed inside the mounting blocks. The blade assembly includes a fixed blade and a movable blade. The limiting assembly is arranged between the fixed blade and the movable blade. The limiting assembly includes a first fixed cylinder, a second fixed cylinder, and a rotating cylinder. The first fixed cylinder and the second fixed cylinder are both fixedly installed at the outer end of the fixed blade, and the rotating cylinder is fixedly installed at the outer end of the movable blade. The fixed blade and the movable blade change the included angle by rotating through the limiting assembly, actively changing the windward area of the blade assembly.

[0011] The above technical solution in the embodiment of the present application has at least the following technical effects:

[0012] A set of blade assemblies are installed on multiple mounting blocks distributed annularly and equidistantly. At the same time, a generator is installed inside each mounting block. The blade assembly is connected to the rotating shaft of the generator through a connecting cylinder. The fixed blade and the movable blade are connected together through a limiting assembly. The limiting assembly can make the movable blade rotate by releasing the limit. When the movable blade rotates, the included angle with the fixed blade can be changed, thereby changing the windward area of the entire blade assembly. When it is used in an area with a relatively fast wind speed, the windward area of the blade can be reduced, the rotation speed can be kept in the optimal working range, and the service life can be improved.

[0013] In some embodiments, it further includes: a protection assembly. The protection assembly includes a baffle and a rotating shaft. The baffle and the rotating shaft are fixedly connected. Through grooves are formed at the outer ends of the fixed blade and the movable blade. The baffle is rotatably installed inside the through groove through the rotating shaft. The baffle changes the windward area of the blade assembly by passive rotation.

[0014] In some embodiments, a fixed frame is fixedly connected to the outer end of the mounting block. A connecting rod is fixedly connected to the outer end of the fixed frame. The bottom end of the connecting rod is rotatably connected to a vertical rod, and the bottom end of the vertical rod is fixedly installed and connected to a base.

[0015] In some embodiments, the rotating shaft of the generator penetrates through the side wall of the mounting block and extends to the outside. A connecting cylinder is fixedly installed on the rotating shaft of the generator. The outer end of the connecting cylinder is fixedly connected to the first fixed cylinder. The rotating cylinder is arranged between the first fixed cylinder and the second fixed cylinder. The first fixed cylinder, the second fixed cylinder, and the rotating cylinder are coaxially arranged.

[0016] In some embodiments, the limiting assembly further includes a movable rod. The bottom end of the movable rod sequentially penetrates through the first fixed cylinder and the rotating cylinder and extends into the second fixed cylinder. And a pressing plate is fixedly installed at the bottom end of the movable rod. A spring is arranged inside the second fixed cylinder, and the pressing plate abuts against the spring.

[0017] In some embodiments, an internal gear ring is fixedly installed on the inner side of the top of the rotating cylinder, a gear adapted to the internal gear ring is fixedly installed at the outer end of the movable rod, two limiting blocks are fixedly installed at the outer end of the movable rod, two limiting grooves are formed in the inner side of one of the fixed cylinders, and the limiting blocks are slidably connected with the limiting grooves.

[0018] In some embodiments, the protection assembly further includes a mounting housing, the mounting housing is fixedly installed inside the through groove, a clamping block is fixedly installed at the bottom end of the rotating shaft, a torsion spring is installed inside the mounting housing, the bottom end of the rotating shaft extends into the mounting housing, and the clamping block is connected with one end of the torsion spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0020] Figure 2 is a schematic diagram of the fixing frame structure of the present utility model;

[0021] Figure 3 is a schematic diagram of the generator installation structure of the present utility model;

[0022] Figure 4 is a schematic diagram of the limiting component structure of the present utility model;

[0023] Figure 5 is a schematic diagram of the protection component structure of the present utility model;

[0024] Figure 6 is a schematic cross-sectional view of the protection component of the present utility model.

[0025] Explanation of the reference numerals in the drawings:

[0026] 1. Vertical rod;

[0027] 2. Base;

[0028] 3. Connecting rod;

[0029] 4. Mounting block;

[0030] 5. Fixing frame;

[0031] 6. Blade assembly; 61. Fixed blade; 62. Movable blade;

[0032] 7. Limiting component; 71. First fixed cylinder; 72. Second fixed cylinder; 73. Spring; 74. Movable rod; 75. Rotating cylinder; 76. Internal gear ring; 77. Gear; 78. Pressure plate; 79. Limiting block; 710. Limiting groove;

[0033] 8. Protection component; 81. Baffle; 82. Through groove; 83. Rotating shaft; 84. Clamping block; 85. Mounting housing; 86. Torsion spring;

[0034] 9. Generator;

[0035] 10. Connecting cylinder. Specific implementation manner

[0036] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model; obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0037] Please refer to Figure 1 - Figure 6 , a small and micro wind power generator, comprising: mounting blocks 4 distributed annularly and equidistantly, a blade assembly 6 and a limiting assembly 7. A generator 9 is installed inside the mounting block 4. The blade assembly 6 includes a fixed blade 61 and a movable blade 62. The limiting assembly 7 is arranged between the fixed blade 61 and the movable blade 62. The limiting assembly 7 includes a first fixed cylinder 71, a second fixed cylinder 72 and a rotating cylinder 75. The first fixed cylinder 71 and the second fixed cylinder 72 are both fixedly installed at the outer end of the fixed blade 61. The rotating cylinder 75 is fixedly installed at the outer end of the movable blade 62. The fixed blade 61 and the movable blade 62 change the included angle by rotating through the limiting assembly 7, and actively change the windward area of the blade assembly 6.

[0038] It further includes: a protection assembly 8. The protection assembly 8 includes a baffle 81 and a rotating shaft 83. The baffle 81 and the rotating shaft 83 are fixedly connected. Through grooves 82 are formed at the outer ends of the fixed blade 61 and the movable blade 62. The baffle 81 is rotatably installed inside the through groove 82 through the rotating shaft 83. The baffle 81 passively rotates to change the windward area of the blade assembly 6.

[0039] The device in this solution is a small wind power generation device. Among them, multiple mounting blocks 4 are distributed at equal intervals in a ring shape and can form a shape similar to a polygon. At the same time, a generator 9 is installed inside each mounting block 4. Each generator 9 is equipped with a set of blade assemblies 6 through a connecting cylinder 10. When the blade assemblies 6 are blown by the wind, they can drive the generator 9 to rotate for power generation. These multiple generators 9 can be connected in parallel and then rectified by an external inverter and other devices to convert it into a standard voltage for use. A connecting cylinder 10 is fixed on the rotating shaft of each generator 9, and blade assemblies 6 are fixed on both sides of the connecting cylinder 10. Every two blade assemblies 6 form a group, enabling each group of blade assemblies 6 to rotate independently for power generation. The fixed blade 61 and the movable blade 62 are connected together through a limiting component 7. The limiting component 7 can make the movable blade 62 rotate by releasing the limit. When the movable blade 62 rotates, the included angle with the fixed blade 61 can be changed, thereby changing the windward area of the entire blade assembly 6. When it is used in an area with a relatively fast wind speed, the windward area of the blade can be reduced, the rotation speed can be maintained in the optimal working range, and the service life can be extended.

[0040] The above-mentioned limiting component 7 actively changes the windward area of the blade assembly 6, while a protection component 8 is installed on each fixed blade 61 and movable blade 62, and the protection component 8 can passively change the windward area of the blade assembly 6. Through grooves 82 are opened on both the fixed blade 61 and the movable blade 62. The rotating shaft 83 is fixedly installed at the middle of the outer end of the baffle 81. The baffle 81 is rotatably installed inside the through groove 82 through the rotating shaft 83. When the local wind force suddenly increases, it is too late to adjust the windward area of the blade assembly 6 through the limiting component 7 at this time. Due to the rotatable characteristic of the baffle 81, the through groove 82 can be opened, thereby passively reducing the windward area of the blade assembly 6, enabling it to reduce its rotation speed and the probability of damage when dealing with a sudden increase in wind force.

[0041] Please refer to Figure 2 - Figure 5 The outer end of the mounting block 4 is fixedly connected to a fixing frame 5. The outer end of the fixing frame 5 is fixedly connected to a connecting rod 3. The bottom end of the connecting rod 3 is rotatably connected to a vertical rod 1. The bottom end of the vertical rod 1 is fixedly installed and connected to a base 2.

[0042] In this solution, multiple mounting blocks 4 distributed at equal intervals in a ring shape are mainly connected together through the fixing frame 5. Through the fixing frame 5, multiple mounting blocks 4 can be fixed together. The top of the connecting rod 3 is fixed to the outer end of the fixing frame 5, and the bottom of the connecting rod 3 is rotatably connected to the vertical rod 1. The base 2 is fixed at the bottom of the vertical rod 1. Through the base 2, the device can be placed on the ground. Through the rotatable connection between the connecting rod 3 and the vertical rod 1, the position of the blade assembly 6 can be adjusted according to the wind direction.

[0043] Please refer to Figure 1 - Figure 5 The rotating shaft of the generator 9 penetrates through the side wall of the mounting block 4 and extends to the outside. A connecting cylinder 10 is fixedly installed on the rotating shaft of the generator 9. The outer end of the connecting cylinder 10 is fixedly connected to the first fixed cylinder 71. The rotating cylinder 75 is arranged between the first fixed cylinder 71 and the second fixed cylinder 72. The first fixed cylinder 71, the second fixed cylinder 72 and the rotating cylinder 75 are coaxially arranged.

[0044] The limiting component 7 further includes a movable rod 74. The bottom end of the movable rod 74 sequentially penetrates through the first fixed cylinder 71 and the rotating cylinder 75 and extends into the second fixed cylinder 72. A pressing disc 78 is fixedly installed at the bottom end of the movable rod 74. A spring 73 is arranged inside the second fixed cylinder 72. The pressing disc 78 abuts against the spring 73.

[0045] An internal gear ring 76 is fixedly installed on the inner side of the top of the rotating cylinder 75. A gear 77 adapted to the internal gear ring 76 is fixedly installed at the outer end of the movable rod 74. Two limiting blocks 79 are fixedly installed at the outer end of the movable rod 74. Two limiting grooves 710 are formed on the inner side of the first fixed cylinder 71. The limiting blocks 79 are slidably connected to the limiting grooves 710.

[0046] The limiting component 7 in this solution is mainly used to adjust the windward area of the blade component 6. The blade component 6 is mainly composed of a fixed blade 61 and a movable blade 62. The first fixed cylinder 71 and the second fixed cylinder 72 are fixed on the fixed blade 61, while the rotating cylinder 75 is fixed on the movable blade 62. Since the first fixed cylinder 71 needs to be fixed at the outer end of the connecting cylinder 10 at the same time, the fixed blade 61 is non-rotatable. The rotating cylinder 75 is located between the first fixed cylinder 71 and the second fixed cylinder 72. The inside of the second fixed cylinder 72 is hollow, and a spring 73 is arranged inside it. Since the first fixed cylinder 71, the rotating cylinder 75 and the second fixed cylinder 72 are coaxially arranged, the movable rod 74 can sequentially penetrate through the first fixed cylinder 71 and the rotating cylinder 75 and extend into the second fixed cylinder 72. A pressing disc 78 is fixed at the bottom of the movable rod 74. Therefore, the pressing disc 78 is located inside the second fixed cylinder 72 and presses against the spring 73.

[0047] Two limiting blocks 79 are fixed at the outer end of the movable rod 74, and two limiting grooves 710 are formed on the inner side of the first fixed cylinder 71. Therefore, when the movable rod 74 penetrates through the first fixed cylinder 71, the limiting blocks 79 will also be slidably connected to the limiting grooves 710, so that the movable rod 74 can only move up and down and cannot rotate. An internal gear ring 76 is fixed on the inner side of the top of the rotating cylinder 75, and a gear 77 is fixed at the outer end of the movable rod 74. The gear 77 is adapted to the internal gear ring 76. When they are meshed with each other, they will be stuck and unable to rotate.

[0048] When it is necessary to adjust the angle between the fixed blade 61 and the movable blade 62, the movable rod 74 can be directly pressed inward. At this time, the movable rod 74 will drive the gear 77 to move into the rotating cylinder 75. At the same time, the pressure plate 78 will also compress the spring 73. At this time, the rotating cylinder 75 is released from the restriction of the gear 77, so that the movable blade 62 can rotate to adjust the included angle with the fixed blade 61, achieving the function of adjusting the windward area. When in an area with weak wind resources, the fixed blade 61 and the movable blade 62 can be fully unfolded to form 180 degrees, achieving the maximum windward area. When the wind is strong, the included angle can be reduced, thereby reducing the windward area, so that it can be adjusted according to the characteristics of different regions.

[0049] After the adjustment is completed, the movable rod 74 is directly released. Through the action of the spring 73, the pressure plate 78 can drive the movable rod 74 to reset. At this time, through the engagement of the gear 77 and the internal gear ring 76, and the cooperation of the limit block 79 and the limit groove 710, the fixed blade 61 and the movable blade 62 cannot rotate.

[0050] Please refer to Figure 2 - Figure 6 The protection component 8 further includes a mounting housing 85. The mounting housing 85 is fixedly installed inside the through groove 82. A clamping block 84 is fixedly installed at the bottom end of the rotating shaft 83. A torsion spring 86 is installed inside the mounting housing 85. The bottom end of the rotating shaft 83 extends into the mounting housing 85, and the clamping block 84 is connected to one end of the torsion spring 86.

[0051] The protection component 8 in this solution is mainly used to passively adjust the windward area, that is, to act as an insurance. One end of the rotating shaft 83 is rotatably connected to one side inside the through groove 82, and the other side inside the through groove 82 is fixed with the mounting housing 85. A torsion spring 86 is installed inside the mounting housing 85. The bottom end of the torsion spring 86 is fixed at the bottom of the mounting housing 85, and the bottom of the rotating shaft 83 is fixed with the clamping block 84, which extends into the mounting housing 85 all the time, so that the clamping groove at the bottom of the clamping block 84 is stuck on the top end of the torsion spring 86. Thus, when the wind suddenly becomes too strong, the baffle 81 can drive the rotating shaft 83 to rotate, and at the same time twist the torsion spring 86. When the wind speed returns to normal, the baffle 81 can be reset through the torsion spring 86. That is to say, when the wind force borne by the baffle 81 is greater than the torsion force of the torsion spring 86, the baffle 81 will be rotated and opened, so that it can cope with the sudden increase in wind speed and play an insurance role.

[0052] Working principle: When the device needs to adjust the windward area during operation, directly press the movable rod 74 inward, and the rotating cylinder 75 is disengaged from the restriction of the gear 77, enabling the movable blades 62 to rotate, thereby adjusting the angle between the movable blades and the fixed blades 61 to achieve the effect of adjusting the windward area and matching the rotational speed with the wind energy resources. The protection component 8 adjusts the windward area passively. When the wind force suddenly becomes too large, the baffle 81 can drive the rotating shaft 83 to rotate, while twisting the torsion spring 86. When the wind speed returns to normal, the torsion spring 86 can then reset the baffle 81, playing an insurance role.

Claims

1. A small wind turbine, characterized in that: include: An annular mounting block (4) distributed equidistantly, wherein a generator (9) is installed inside the mounting block (4); A blade assembly (6), the blade assembly (6) comprising a fixed blade (61) and a movable blade (62); a limiting assembly (7) disposed between the fixed blade (61) and the movable blade (62), the limiting assembly (7) comprising a fixed cylinder (71), a fixed cylinder (72) and a rotating cylinder (75), the fixed cylinder (71) and the fixed cylinder (72) both being fixedly mounted on the outer end of the fixed blade (61), and the rotating cylinder (75) being fixedly mounted on the outer end of the movable blade (62); The fixed blade (61) and the movable blade (62) are rotated to change the included angle through the limiting assembly (7), thereby actively changing the windward area of ​​the blade assembly (6).

2. A micro wind turbine according to claim 1, characterized in that: Also includes: A protection assembly (8), the protection assembly (8) comprising a baffle (81) and a rotating shaft (83), the baffle (81) and the rotating shaft (83) being fixedly connected, the outer ends of the fixed blade (61) and the movable blade (62) both being provided with through grooves (82), the baffle (81) being rotatably mounted on the inner side of the through groove (82) via the rotating shaft (83), and the baffle (81) changing the windward area of ​​the blade assembly (6) by passive rotation.

3. A micro wind turbine according to claim 1, characterized in that: The outer end of the mounting block (4) is fixedly connected to a fixing frame (5), the outer end of the fixing frame (5) is fixedly connected to a connecting rod (3), the bottom end of the connecting rod (3) is rotatably connected to a vertical rod (1), and the bottom end of the vertical rod (1) is fixedly connected to a base (2).

4. A micro wind turbine according to claim 1, characterized in that: The rotating shaft of the generator (9) passes through the side wall of the mounting block (4) and extends to the outside. The rotating shaft of the generator (9) is fixedly mounted with a connecting cylinder (10). The outer end of the connecting cylinder (10) is fixedly connected to the first fixed cylinder (71). The rotating cylinder (75) is arranged between the first fixed cylinder (71) and the second fixed cylinder (72). The first fixed cylinder (71), the second fixed cylinder (72) and the rotating cylinder (75) are coaxially arranged.

5. A micro wind turbine according to claim 4, characterized in that: The limiting assembly (7) further comprises a movable rod (74), the bottom end of which passes through the first fixed cylinder (71) and the rotating cylinder (75) in sequence and extends to the interior of the second fixed cylinder (72), and a pressure plate (78) is fixedly mounted on the bottom end of the movable rod (74), a spring (73) is provided inside the second fixed cylinder (72), and the pressure plate (78) abuts against the spring (73).

6. A micro wind turbine according to claim 5, characterized in that: An inner gear ring (76) is fixedly mounted on the inner side of the top of the rotating cylinder (75); a gear (77) matched with the inner gear ring (76) is fixedly mounted on the outer end of the movable rod (74); two limit blocks (79) are fixedly mounted on the outer end of the movable rod (74); two limit grooves (710) are provided on the inner side of the fixed cylinder (71); and the limit blocks (79) are slidably connected to the limit grooves (710).

7. A micro wind turbine according to claim 2, characterized in that: The protection assembly (8) further comprises a mounting shell (85), wherein the mounting shell (85) is fixedly mounted on the inner side of the through slot (82), a clamping block (84) is fixedly mounted on the bottom end of the rotating shaft (83), a torsion spring (86) is mounted inside the mounting shell (85), the bottom end of the rotating shaft (83) extends into the interior of the mounting shell (85), and the clamping block (84) is connected to one end of the torsion spring (86).

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