Wind power generation device

Abstract

The utility model discloses a wind power generation device, which belongs to the technical field of wind power generation and particularly comprises a rack, a main shaft is rotatably connected above the rack, an inner blade mechanism is arranged on the outer side of the main shaft, and an outer blade mechanism is further arranged on the main shaft and located on the outer side of the inner blade mechanism. Through the arrangement of the inner blade mechanism and the outer blade mechanism, the overall power generation efficiency of the device is improved, the air inlet grooves are formed in the edge of the outer blade body, air forms vortexes on the edge of the outer blade body, and the vortexes move backwards in a rotating mode and interact with surrounding air to generate backward thrust, so that the power generation efficiency of the device is improved. The vortexes apply forward reverse thrust to the outer blade body at the same time, the hydrodynamic pressure difference is better utilized, and therefore the efficiency of the whole wind driven generator is further improved.

Description

Technical Field

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

[0002] A wind turbine is a device that converts wind energy into electrical energy. Vertical-axis wind turbines are widely used in low-wind-speed power generation projects because their power generation performance is independent of relative wind direction and they operate in low-wind-speed areas. Existing vertical-axis wind turbines primarily use wind-driven blades, causing them to rotate around a central axis. These blades are connected to a generator, transferring the wind's kinetic energy to the generator, which then generates electricity.

[0003] The prior art discloses a Chinese utility model patent application numbered 202222695991.2, which discloses a vertical-axis wind turbine blade. The blade is connected to a fixed frame via a fixing pin. A connecting device is fixed in the middle of the blade. The connecting device securely connects the first and second base materials of the blade via a fiber composite profile square tube and a circular tube. Fixing rings are fixed at the upper and lower ends of the blade. This convenient connection method optimizes structural mechanics and increases wind power utilization.

[0004] The above-mentioned prior art still has some shortcomings: the blades are driven to rotate under the action of wind, but since the surface of the blades is relatively smooth, the friction between the wind and the blade surface is relatively small, thereby affecting the power generation efficiency. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the utility model provides a wind power generation device with the characteristics of high power generation efficiency.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a wind power generation device, comprising a frame, wherein the upper portion of the frame is rotatably connected to a main shaft, an inner blade mechanism is provided on the outer side of the main shaft, and an outer blade mechanism is further provided on the main shaft on the outer side of the inner blade mechanism;

[0007] The inner blade mechanism includes a fixed cylinder, a mounting plate and an inner blade body. The fixed cylinder is fixedly sleeved on the main shaft. A plurality of mounting plates are fixedly connected to the side wall of the fixed cylinder. A plurality of inner blade bodies fixedly connected to the fixed cylinder are arranged between two adjacent mounting plates.

[0008] The outer blade mechanism includes a top frame, a bottom frame and an outer blade body. The top frame and the bottom frame are fixedly sleeved on the main shaft. A plurality of outer blade bodies are fixedly connected between the top frame and the bottom frame. A hollow cavity is provided in the outer blade body. An air inlet groove connected to the hollow cavity is provided at the inner edge of the outer blade body.

[0009] Preferably, a generator is fixedly connected to the frame, and the output shaft of the generator is transmission-connected to the main shaft.

[0010] Preferably, the inner blade body is an arc-shaped structure.

[0011] Preferably, the top frame and the bottom frame have the same structure, wherein the top frame includes a fixed plate and a connecting rod, the fixed plate is fixedly sleeved on the main shaft, the fixed plate is fixedly connected to a connecting rod corresponding to the outer blade body, and the other end of the connecting rod is fixedly connected to the outer blade body.

[0012] Preferably, a reinforcing rod is fixedly connected between two adjacent connecting rods.

[0013] Preferably, the outer blade body is a teardrop-shaped structure.

[0014] Preferably, a reinforcement plate is fixedly connected to the air inlet slot.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The utility model improves the overall power generation efficiency of the device by setting up an inner blade mechanism and an outer blade mechanism, and the air inlet grooves are set at the edges of the outer blade body, and the air forms vortices at the edges of the outer blade body. These vortices move backward in a rotating manner, interact with the surrounding air, and generate backward thrust. These vortices also apply a forward reverse thrust to the outer blade body, better utilizing the fluid mechanics pressure difference, thereby further improving the efficiency of the entire wind turbine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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:

[0018] Figure 1 This is a three-dimensional structural diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the second three-dimensional structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the main structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the top view of the structure of the utility model;

[0022] In the figure: 1. Frame; 2. Main shaft; 3. Fixed cylinder; 4. Mounting plate; 5. Inner blade body; 6. Outer blade body; 7. Hollow cavity; 8. Air inlet slot; 9. Fixed plate; 10. Connecting rod; 11. Reinforcement rod; 12. Reinforcement plate. DETAILED DESCRIPTION

[0023] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention. Example

[0024] See also Figure 1-4 This embodiment provides the following technical solution: a wind power generation device, including a frame 1, the upper part of the frame 1 is rotatably connected to the main shaft 2, the outer side of the main shaft 2 is provided with an inner blade mechanism, and the main shaft 2 is further provided with an outer blade mechanism on the outer side of the inner blade mechanism. A generator is fixedly connected to the frame 1, and the output shaft of the generator is transmission-connected to the main shaft 2. The structure of the combination of the inner blade mechanism and the outer blade mechanism can better adapt to different wind speed conditions, thereby improving the overall power generation efficiency of the device.

[0025] The inner blade mechanism includes a fixed cylinder 3, a mounting plate 4 and an inner blade body 5. The fixed cylinder 3 is fixedly mounted on the main shaft 2. A plurality of mounting plates 4 are fixedly connected to the side wall of the fixed cylinder 3. The plurality of mounting plates 4 are arranged at intervals along the axial direction of the main shaft 2. A plurality of inner blade bodies 5 fixedly connected to the fixed cylinder 3 are arranged between two adjacent mounting plates 4. The inner blade body 5 is an arc-shaped structure. By setting the inner blade body 5 as an arc-shaped structure, the inner blade body 5 can better perform the wind-hooking operation, thereby better converting wind force into mechanical energy and improving the power generation efficiency.

[0026] In some embodiments, the curvature of the inner blade body 5 can be changed according to the use environment, which is conducive to adapting to different working environments.

[0027] The outer blade mechanism includes a top frame, a bottom frame and an outer blade body 6. The top frame and the bottom frame are fixedly mounted on the main shaft 2. Multiple outer blade bodies 6 are fixedly connected between the top frame and the bottom frame. A hollow cavity 7 is provided in the outer blade body 6. An air inlet slot 8 connected to the hollow cavity 7 is provided at the inner edge of the outer blade body 6.

[0028] In some embodiments, there are at least three outer blade bodies 6, and the number of outer blade bodies 6 is an odd number, to avoid the problem of resonance caused by an even number of outer blade bodies 6.

[0029] At the edge of the outer blade body 6, air forms vortices at the edge of the outer blade body 6. These vortices move backward in a rotating manner, interact with the surrounding air, and generate backward thrust. These vortices also apply a forward reverse thrust to the outer blade body 6, making better use of the fluid mechanics pressure difference, thereby further improving the efficiency of the entire wind turbine.

[0030] In some embodiments, the outer blade body 6 has a teardrop-shaped structure, which can reduce resistance and improve fluid flow efficiency, helping the outer blade body 6 to more effectively capture wind energy and convert it into rotational power.

[0031] In some embodiments, a reinforcement plate 12 is fixedly connected to the air inlet slot 8 , and the provision of the reinforcement plate 12 increases the firmness of the outer blade body 6 .

[0032] In some embodiments, the inner blade mechanism is arranged between the top frame and the bottom frame, and the top frame and the bottom frame have the same structure, wherein the top frame includes a fixed disk 9 and a connecting rod 10, and the fixed disk 9 is fixedly sleeved on the main shaft 2, and the fixed disk 9 is fixedly connected to the connecting rod 10 corresponding to the outer blade body 6, and the other end of the connecting rod 10 is fixedly connected to the outer blade body 6, and a reinforcing rod 11 is also fixedly connected between the two adjacent connecting rods 10. By setting the fixed disk 9, connecting rod 10 and reinforcing rod 11, the stability of the outer blade body 6 during rotation can be improved.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A wind power generation device, characterized in that: The machine comprises a frame (1), the upper portion of the frame (1) is rotatably connected to a main shaft (2), an inner blade mechanism is provided on the outer side of the main shaft (2), and an outer blade mechanism is further provided on the outer side of the inner blade mechanism on the main shaft (2); The inner blade mechanism comprises a fixed cylinder (3), a mounting plate (4) and an inner blade body (5); the fixed cylinder (3) is fixedly sleeved on the main shaft (2); a plurality of mounting plates (4) are fixedly connected to the side wall of the fixed cylinder (3); and a plurality of inner blade bodies (5) fixedly connected to the fixed cylinder (3) are provided between two adjacent mounting plates (4); The outer blade mechanism comprises a top frame, a bottom frame and an outer blade body (6), wherein the top frame and the bottom frame are fixedly sleeved on the main shaft (2), a plurality of outer blade bodies (6) are fixedly connected between the top frame and the bottom frame, a hollow cavity (7) is provided in the outer blade body (6), and an air inlet slot (8) communicating with the hollow cavity (7) is provided at the inner edge of the outer blade body (6).

2. A wind power generation device according to claim 1, characterized in that: A generator is fixedly connected to the frame (1), and an output shaft of the generator is transmission-connected to a main shaft (2).

3. The wind power generation device according to claim 1, characterized in that: The inner blade body (5) is an arc-shaped structure.

4. A wind power generation device according to claim 1, characterized in that: The top frame and the bottom frame have the same structure, wherein the top frame comprises a fixed disk (9) and a connecting rod (10), the fixed disk (9) is fixedly sleeved on the main shaft (2), the fixed disk (9) is fixedly connected to a connecting rod (10) corresponding to the outer blade body (6), and the other end of the connecting rod (10) is fixedly connected to the outer blade body (6).

5. A wind power generation device according to claim 4, characterized in that: A reinforcing rod (11) is also fixedly connected between two adjacent connecting rods (10).

6. A wind power generation device according to claim 4, characterized in that: The outer blade body (6) is a water drop-shaped structure.

7. The wind power generation device according to claim 5, characterized in that: A reinforcing plate (12) is fixedly connected to the air inlet slot (8).

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