Wind driven generator blade

Abstract

The utility model discloses a wind driven generator blade which comprises a flow guide cover, the flow guide cover is connected with three connecting rods through a plurality of bearings, the three connecting rods all penetrate through the side wall of the flow guide cover, and each connecting rod is connected with a rotating blade through a fastener. A groove matched with the connecting rod is formed in the rotating blade, a containing groove is formed in the rotating blade, a plurality of connecting telescopic rods are fixedly connected to the side wall of the containing groove, telescopic blades are fixedly connected to one ends of the connecting telescopic rods, and the connecting telescopic rods are all sleeved with connecting springs; one end of the connecting spring is fixedly connected to the side wall of the containing groove. According to the utility model, the transportation occupied area can be reduced, the transportation convenience is improved, the angles of the blades can be adjusted, and the wind power utilization rate is improved.

Description

Technical Field

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

[0002] Wind power generation refers to the conversion of wind's kinetic energy into electrical energy. Wind is a pollution-free energy source. Using wind power to generate electricity is very environmentally friendly and can generate a lot of electricity. The design of wind turbine blades directly affects the wind energy conversion efficiency and its annual power generation, and is an important part of wind energy utilization.

[0003] For example, Chinese patent application No. 202221222924.2 discloses a wind turbine blade, including a blade body, the inner wall of the blade body is provided with a heating assembly, the upper inner wall of the blade body is provided with a temperature sensor, and one side of the blade body is provided with a rain and snow sensor, one side of the blade body is provided with a connection end, a controller and a battery are provided inside the connection end, and a solar energy group is provided on the front of the blade body, and the controller is electrically connected to the battery, the temperature sensor and the rain and snow sensor. The utility model has the function of preventing rain and snow from freezing and the advantages of energy saving and environmental protection;

[0004] In the above scheme, the blades are arranged in an integrated manner. Before installing the wind turbine generator set, the blades need to be transported to the place where they are to be installed. During transportation, the blades are often too large in area, which aggravates the transportation difficulties. If you are not careful, the blades or even the entire wind turbine will be damaged. In order to solve the above problems, we have designed a wind turbine blade. Utility Model Content

[0005] The utility model provides a wind turbine blade to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A wind turbine blade comprises a fairing, wherein the fairing is connected to three connecting rods via a plurality of bearings, the three connecting rods all penetrate the side wall of the fairing, each connecting rod is connected to a rotating blade via a fastener, the rotating blade is provided with a groove matching the connecting rod, the rotating blade is provided with a receiving slot, a plurality of connecting telescopic rods are fixedly connected to the side wall of the receiving slot, one end of the plurality of connecting telescopic rods is fixedly connected to the telescopic blade, a connecting spring is sleeved on the plurality of connecting telescopic rods, one end of the connecting spring is fixedly connected to the side wall of the receiving slot, and the other end of the connecting spring is fixedly connected to the bottom side wall of the telescopic blade, and an adjustment component is provided in the fairing.

[0008] As a further improvement of the present technical solution: the adjustment component includes an adjustment motor, the adjustment motor is fixedly connected to the inner side wall of the air deflector, the output end of the adjustment motor is fixedly connected to a first bevel gear, the first bevel gear is meshed with three second bevel gears, and the three second bevel gears are respectively fixedly connected to the three connecting rods.

[0009] As a further improvement of the technical solution: the fastener comprises a threaded fastening rod, the threaded fastening rod passes through the rotating blade and the side wall of the connecting rod, and two fastening nuts are threadedly connected to the threaded fastening rod.

[0010] As a further improvement of the technical solution: the three connecting rods are all fixedly connected with anti-slip sleeves, and the anti-slip sleeves are made of rubber material.

[0011] As a further improvement of the technical solution: the left side wall and the right side wall of the plurality of rotating blades are both arranged in a serrated shape.

[0012] As a further improvement of the technical solution: the rotating blades and the telescopic blades are both made of carbon fiber.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. By opening a receiving groove in the rotating blade, and then connecting the telescopic blade by connecting the telescopic rod and the connecting spring, the integrated blade is divided into two retractable sections, which can reduce the occupied area during transportation and improve the convenience of transportation;

[0015] 2. By adjusting the coordination of the motor, the first bevel gear and the second bevel gear, multiple connecting rods can be rotated, thereby adjusting the angle of the blades and improving the utilization rate of wind power.

[0016] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiment of the utility model with the accompanying drawings. The specific implementation method of the utility model is given in detail by the following embodiments and their drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 This is a schematic diagram of a side cross-sectional structure of a wind turbine blade proposed by the utility model;

[0019] Figure 2 for Figure 1 A is a magnified view of the local structure of the middle part;

[0020] Figure 3 This is a schematic diagram of a partial front view cross-sectional structure of a wind turbine blade proposed by the utility model;

[0021] Figure 4 The utility model is a schematic diagram of a partial front view cross-sectional structure of a wind turbine blade.

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] 1. Air deflector; 2. Connecting rod; 3. Bearing; 4. Rotating blades; 5. Receiving groove; 6. Connecting telescopic rod; 7. Connecting spring; 8. Telescopic blades; 9. Adjusting motor; 10. First bevel gear; 11. Second bevel gear; 12. Threaded fastening rod; 13. Anti-slip sleeve; 14. Fastening nut. DETAILED DESCRIPTION

[0024] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer according to the following description and claims. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0025] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0027] See also Figure 1-4In an embodiment of the utility model, a wind turbine blade includes a fairing 1, which is connected to three connecting rods 2 through a plurality of bearings 3. The three connecting rods 2 all penetrate the side wall of the fairing 1, and each connecting rod 2 is connected to a rotating blade 4 through a fastener. The rotating blade 4 is provided with a groove matched with the connecting rod 2, and the rotating blade 4 is provided with a receiving groove 5. A plurality of connecting telescopic rods 6 are fixedly connected to the side wall of the receiving groove 5, and one end of the plurality of connecting telescopic rods 6 is fixedly connected to the telescopic blade 8. A connecting spring 7 is sleeved on the plurality of connecting telescopic rods 6, and one end of the connecting spring 7 is fixedly connected to the side wall of the receiving groove 5, and the other end of the connecting spring 7 is fixedly connected to the bottom side wall of the telescopic blade 8. An adjusting component is provided in the fairing 1.

[0028] See also Figure 1-4 The adjustment component includes an adjustment motor 9, which is fixedly connected to the inner side wall of the air deflector 1. The output end of the adjustment motor 9 is fixedly connected to a first bevel gear 10, and three second bevel gears 11 are meshed and connected to the first bevel gear 10. The three second bevel gears 11 are respectively fixedly connected to three connecting rods 2. The function of adjusting the blade angle is to install a wind direction sensor and a wind speed sensor on the wind turbine to sense the changes in wind force and wind direction, and then transmit the signal to the controller. The controller controls the adjustment motor 9 to rotate, which is more convenient without manual adjustment. The wind direction sensor, wind speed sensor and controller are all existing technologies and are not demonstrated in the article.

[0029] See also Figure 1-4 The fastener includes a threaded fastening rod 12, which passes through the side walls of the rotating blade 4 and the connecting rod 2. Two fastening nuts 14 are threadedly connected to the threaded fastening rod 12. The rotating blade 4 is installed through a detachable structure between the threaded fastening rod 13 and the fastening nut 14.

[0030] See also Figure 1-4 The three connecting rods 2 are all fixedly connected with anti-skid sleeves 13, and the anti-skid sleeves 13 are made of rubber material to enhance the stability between the connecting rods 2 and the rotating blades 4. The rubber material has good shock absorption and protects the overall structure.

[0031] See also Figure 1-4 The left and right walls of the plurality of rotating blades 4 are both serrated, and the airflow is dispersed through the serrations, which helps to reduce wind noise.

[0032] See also Figure 1-4 The rotating blades 4 and the telescopic blades 8 are both made of carbon fiber material, which has high strength and high rigidity, light weight, corrosion resistance and good high temperature tolerance.

[0033] The working principle of the utility model is: when installing, the groove at one end of the rotating blade 4 is clamped into one end of the connecting rod 2, and then the threaded fastening rod 12 is passed through the rotating blade 4 and the connecting rod 2 (the rotating blade 4 and the connecting rod 2 are pre-opened with matching through holes), and then the fastening nut 14 is tightened on both ends of the threaded fastening rod 12 to complete the fixation of the rotating blade 4 and the air guide cover 1. When transporting, an object is used to push the telescopic blade 8 into the accommodating groove 5, which reduces the area occupied during transportation. The tail end of the blade does not need to be hung outside the transport vehicle. When the angle of the blade needs to be adjusted, the control adjustment motor 9 is started The output end of the adjustment motor 9 rotates clockwise and counterclockwise, driving the first bevel gear 10 to rotate forward and reverse, and driving the three second bevel gears 11 meshing therewith to rotate forward and reverse, so that the connecting rod 2 follows the forward and reverse rotation, thereby adjusting the blade angle. A wind direction sensor and a wind speed sensor can be installed on the wind turbine to sense changes in wind force and wind direction, and then transmit the signal to the controller. The controller controls the adjustment motor 9 to rotate, which is more convenient without manual adjustment. The wind direction sensor, wind speed sensor and controller are all existing technologies and are not demonstrated in the article.

[0034] The above description is only a preferred embodiment of the utility model and does not impose any form of limitation on the utility model. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. A wind turbine blade, comprising a guide shroud (1), characterized in that: The air deflector (1) is connected to three connecting rods (2) via a plurality of bearings (3). The three connecting rods (2) all penetrate the side wall of the air deflector (1). Each of the connecting rods (2) is connected to a rotating blade (4) via a fastener. The rotating blade (4) is provided with a groove matching the connecting rod (2). The rotating blade (4) is provided with a receiving groove (5). A plurality of connecting telescopic rods (6) are fixedly connected to the side wall of the receiving groove (5). One end of the plurality of connecting telescopic rods (6) is fixedly connected to the telescopic blade (8). A connecting spring (7) is sleeved on the plurality of connecting telescopic rods (6). One end of the connecting spring (7) is fixedly connected to the side wall of the receiving groove (5). The other end of the connecting spring (7) is fixedly connected to the bottom side wall of the telescopic blade (8). An adjusting component is provided in the air deflector (1).

2. A wind turbine blade according to claim 1, characterized in that: The adjustment assembly comprises an adjustment motor (9), the adjustment motor (9) being fixedly connected to the inner side wall of the air deflector (1), the output end of the adjustment motor (9) being fixedly connected to a first bevel gear (10), the first bevel gear (10) being meshedly connected to three second bevel gears (11), and the three second bevel gears (11) being fixedly connected to the three connecting rods (2), respectively.

3. A wind turbine blade according to claim 2, characterized in that: The fastener comprises a threaded fastening rod (12), the threaded fastening rod (12) passes through the rotating blade (4) and the side wall of the connecting rod (2), and two fastening nuts (14) are threadedly connected to the threaded fastening rod (12).

4. A wind turbine blade according to claim 3, characterized in that: The three connecting rods (2) are all fixedly connected with anti-slip sleeves (13), and the anti-slip sleeves (13) are made of rubber material.

5. A wind turbine blade according to claim 4, characterized in that: The left side wall and the right side wall of the plurality of rotating blades (4) are both arranged in a sawtooth shape.

6. A wind turbine blade according to claim 5, characterized in that: The rotating blades (4) and the telescopic blades (8) are both made of carbon fiber.

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