Novel low-cost small wind power generation blade

Abstract

The utility model relates to the technical field of wind power generation equipment, and discloses a novel low-cost small wind power generation blade which comprises a core framework, upper frameworks which are evenly distributed are fixedly connected to the top of an outer ring of the core framework, and lower frameworks which are evenly distributed are fixedly connected to the bottom of the outer ring of the core framework. A supporting frame is fixedly connected between the core framework and the lower framework, canvas bags are arranged on the surfaces of the upper framework and the lower framework, rivet holes which are evenly distributed are formed in one side of the outer wall of each canvas bag, and nylon ropes are connected to the inner walls of the rivet holes in a sliding mode. According to the wind power generation blade, the upper framework, the supporting frame and the lower framework are combined together to form the supporting framework, the canvas bag is sleeved on the surface of the supporting framework, the canvas bag is combined with the supporting framework through the rivet holes by using the nylon rope, the fan blade bag can be disassembled by unfastening the nylon rope during disassembly, the wind power generation blade is simple and convenient to install and disassemble, and the maintenance cost of the wind power generation blade is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation equipment, in particular to a novel low-cost small wind power generation blade. Background Art

[0002] In the process of wind power generation, large fans are usually used to convert wind energy into electrical energy. The working principle of a wind turbine is relatively simple. The wind wheel rotates under the action of wind force, and it converts the kinetic energy of the wind into mechanical energy of the wind wheel shaft. The generator rotates and generates electricity driven by the wind wheel shaft. Broadly speaking, wind energy is also solar energy, so it can also be said that a wind turbine is a heat energy generator that uses the sun as a heat source and the atmosphere as a working medium.

[0003] During the service life of wind turbine blades, they will inevitably be subject to a certain degree of natural oxidation and wear, which will result in poor performance. Therefore, proper maintenance and replacement are required. Traditional wind turbine blades have high manufacturing material costs, complex manufacturing processes, and excessive maintenance costs. A new type of low-cost small wind turbine blade is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a novel low-cost small wind turbine blade, which solves the problems of complex manufacturing process, high maintenance cost and poor use effect in the background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a new type of low-cost small wind turbine blade, comprising a core skeleton, wherein the top of the outer ring of the core skeleton is fixedly connected to an evenly distributed upper skeleton, and the bottom of the outer ring of the core skeleton is fixedly connected to an evenly distributed lower skeleton, and a support frame is fixedly connected between the core skeleton and the lower skeleton, and canvas bags are provided on the surfaces of the upper skeleton and the lower skeleton, and evenly distributed rivet holes are opened on one side of the outer wall of the canvas bag, and a nylon rope is slidably connected to the inner wall of the rivet hole.

[0006] By adopting the above technical solution, when installing the fan blades, the canvas bag is put on the surface of the supporting frame, and then the nylon rope is used to pass through the rivet holes on the canvas bag to combine the supporting frame and the canvas bag, and the installation of the fan blades can be completed, which is easy to install.

[0007] As a further description of the above technical solution: an upper flange is fixedly connected to the top of the core frame, and evenly distributed bolt holes are opened on the top of the upper flange.

[0008] By adopting the above technical solution, the core skeleton can support the upper flange.

[0009] As a further description of the above technical solution: a generator flange is fixedly connected to the bottom of the core skeleton, and a rotating shaft flange is provided at the bottom of the generator flange.

[0010] By adopting the above technical solution, the core skeleton can support the generator flange, and the generator flange and the shaft flange can support each other.

[0011] As a further description of the above technical solution: evenly distributed bolt holes are provided on one side of the flange connecting the generator and the shaft flange.

[0012] By adopting the above technical solution, the first bolt can connect the generator flange and the shaft flange through the bolt hole.

[0013] As a further description of the above technical solution: the inner circle of the bolt hole is threadedly connected to a first bolt, and the outer circle of the first bolt is threadedly connected to a nut.

[0014] By adopting the above technical solution, the bolt hole can limit the first bolt, and the first bolt can be combined with the nut.

[0015] As a further description of the above technical solution: evenly distributed upper gaskets are provided on the top of the flange connecting the generator, and evenly distributed lower gaskets are provided on the bottom of the rotating shaft flange.

[0016] By adopting the above technical solution, the generator flange can support the upper gasket, and the shaft flange can support the lower gasket.

[0017] As a further description of the above technical solution: an upper gasket is provided through the bottom of the first bolt.

[0018] By adopting the above technical solution, the upper gasket can protect the flange connected to the generator.

[0019] As a further description of the above technical solution: a lower washer is provided through the bottom of the first bolt, and a nut is provided at the bottom of the lower washer.

[0020] By adopting the above technical solution, the lower gasket can protect the rotating shaft flange, and the nut can support the lower gasket.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] The utility model provides a novel low-cost small-scale wind turbine blade. The upper frame, the support frame, the lower frame and the canvas bag are combined into a support frame. The canvas bag is put on the surface of the support frame. The canvas bag and the support frame are tightly connected by nylon rope through the rivet holes. When disassembling, the canvas wind blade bag can be removed by untying the nylon rope. The installation and disassembly are simple, and the maintenance cost of the wind turbine blade is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the upper flange structure of the utility model;

[0025] Figure 3 This is a schematic diagram of the core skeleton structure of the utility model;

[0026] Figure 4 This is an exploded view of the canvas bag structure of the present invention.

[0027] Legend:

[0028] 1. Canvas bag; 2. Upper flange; 3. Bolt hole; 4. Core frame; 5. Generator flange; 6. Rivet hole; 7. Upper frame; 8. Support frame; 9. Lower frame; 10. Rotating shaft flange; 11. Nut; 12. Nylon rope; 13. First bolt; 14. Upper gasket; 15. Lower gasket. DETAILED DESCRIPTION

[0029] 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.

[0030] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings.

[0031] Combine Figure 1The utility model is a novel low-cost small wind turbine blade, including a core skeleton 4, a top of the core skeleton 4 is fixedly connected to an upper flange 2, the top of the upper flange 2 is provided with evenly distributed bolt holes 3, the bolt hole 3 can limit the first bolt 13, and when the first bolt 13 is combined with the nut 11, the position of the first bolt 13 is prevented from moving, the bottom of the core skeleton 4 is fixedly connected to a connecting generator flange 5, the bottom of the connecting generator flange 5 is provided with a rotating shaft flange 10, the connecting generator flange 5 and the rotating shaft flange 10 are provided with evenly distributed bolt holes 3 on one side, the first bolt 13 can pass through the bolt hole 3 pairs of connections between the generator flange 5 and the shaft flange 10 are limited, the inner circle of the bolt hole 3 is threadedly connected to the first bolt 13, the outer circle of the first bolt 13 is threadedly connected to the nut 11, and the top of the generator flange 5 is provided with evenly distributed upper gaskets 14, and the bottom of the shaft flange 10 is provided with evenly distributed lower gaskets 15. When the first bolt 13 is combined with the nut 11, the upper gasket 14 and the lower gasket 15 respectively protect the generator flange 5 and the shaft flange 10 to prevent deformation due to excessive force. The bottom of the first bolt 13 passes through and is provided with an upper gasket 14, and the bottom of the first bolt 13 passes through and is provided with a lower gasket 15.

[0032] Combine Figure 2-4 The top of the outer ring of the core skeleton 4 is fixedly connected with an evenly distributed upper skeleton 7. The core skeleton 4 can support the upper flange 2 and the generator flange 5, and also support the upper skeleton 7 and the lower skeleton 9. The upper skeleton 7 and the lower skeleton 9 together support the support frame 8. The bottom of the outer ring of the core skeleton 4 is fixedly connected with an evenly distributed lower skeleton 9. The core skeleton 4 and the lower skeleton 9 are fixedly connected with a support frame 8. A canvas bag 1 is provided on the surface of the upper skeleton 7 and the lower skeleton 9. Evenly distributed rivet holes 6 are opened on one side of the outer wall of the canvas bag 1. The inner wall of the rivet hole 6 is slidably connected with a nylon rope 12. When the canvas bag 1 is put on the surface of the support skeleton, the nylon rope 12 interacts with the rivet hole 6 to make the canvas bag 1 fit with the support skeleton. When disassembling, you only need to untie the nylon rope 12 to achieve disassembly, thereby improving the use effect.

[0033] Working principle: When using wind turbine blades, first combine the upper frame 7, the support frame 8 and the lower frame 9 into a support frame. After the support frame is assembled, put the canvas bag 1 on the support frame, and then combine the canvas bag 1 with the support frame through the nylon rope 12 and the rivet hole 6 to tightly combine the canvas bag 1 and the support frame to form a blade. When the blade needs to be disassembled and maintained, the nylon rope 12 can be untied to release the limit on the canvas bag 1, which significantly reduces the production cost, maintenance cost and downtime of the wind turbine blade. When installing the canvas bag 1, ensure that the canvas bag 1 is evenly distributed on the support frame and there are no wrinkles or looseness. After the blade is assembled, install the connecting parts, connect the blade to the hub, dock the upper flange 2 with the connecting generator flange 5, align the bolt hole 3, and tightly connect the first bolt 13 with the nut 11 to ensure the installation accuracy and stability of the blade. The canvas has a light weight. When combined with an appropriate support frame, it can reduce the weight of the entire blade, thereby reducing the load of the wind turbine and improving the operating efficiency of the system.

[0034] Finally, it should be noted that the above is only 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 can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A novel low-cost small wind turbine blade, comprising a core skeleton (4), characterized in that: The top of the outer ring of the core skeleton (4) is fixedly connected to an evenly distributed upper skeleton (7), the bottom of the outer ring of the core skeleton (4) is fixedly connected to an evenly distributed lower skeleton (9), a support frame (8) is fixedly connected between the core skeleton (4) and the lower skeleton (9), a canvas bag (1) is provided on the surface of the upper skeleton (7) and the lower skeleton (9), and evenly distributed rivet holes (6) are opened on one side of the outer wall of the canvas bag (1), and a nylon rope (12) is slidably connected to the inner wall of the rivet hole (6).

2. A novel low-cost small wind turbine blade according to claim 1, characterized in that: An upper flange (2) is fixedly connected to the top of the core frame (4), and evenly distributed bolt holes (3) are provided on the top of the upper flange (2).

3. The novel low-cost small wind turbine blade according to claim 1, characterized in that: A generator connecting flange (5) is fixedly connected to the bottom of the core skeleton (4), and a rotating shaft flange (10) is provided at the bottom of the generator connecting flange (5).

4. A novel low-cost small wind turbine blade according to claim 3, characterized in that: Evenly distributed bolt holes (3) are provided on one side of the connecting generator flange (5) and the rotating shaft flange (10).

5. A novel low-cost small wind turbine blade according to claim 4, characterized in that: The inner circle of the bolt hole (3) is threadedly connected to a first bolt (13), and the outer circle of the first bolt (13) is threadedly connected to a nut (11).

6. The novel low-cost small wind turbine blade according to claim 3, characterized in that: The top of the generator connecting flange (5) is provided with evenly distributed upper gaskets (14), and the bottom of the rotating shaft flange (10) is provided with evenly distributed lower gaskets (15).

7. The novel low-cost small wind turbine blade according to claim 5, characterized in that: The bottom of the first bolt (13) passes through and is provided with an upper gasket (14).

8. The novel low-cost small wind turbine blade according to claim 5, characterized in that: The bottom of the first bolt (13) passes through and is provided with a lower gasket (15).

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