A horizontal wing power plant blade

Abstract

This application belongs to the field of wind turbine blade technology, and particularly relates to a blade for a horizontal blade power generation device, including a blade body. The windward area of ​​the front end of the blade body is smaller than the windward area of ​​the rear end of the blade body. The angle between the lower end of the blade body and the horizontal plane is smaller than the angle between the upper end of the horizontal blade and the horizontal plane. This application mounts the blade on a rotating hinge seat and makes the blade hinged to the rotating hinge seat. The blade is lifted by a rope. With the blade structure, the weight of the blade itself is overcome, so that the blade can be made longer, improving the blade's wind energy capture effect, and enabling the horizontal blade wind turbine to generate electricity.

Description

Technical Field

[0001] This application belongs to the field of wind turbine blade technology, and particularly relates to a blade for a horizontal blade power generation device. Background Technology

[0002] Horizontal blade wind turbines can capture weaker wind energy more stably, and the bearings used on them can withstand less stress. However, the overall length of the blades results in a greater weight, leading to fewer applications of horizontal blade wind turbines. Currently, the factors affecting the application of horizontal blade wind turbines include:

[0003] 1. The weight of the blades causes instability in the connection between the blades and the shaft of the wind turbine, and the tip of the blades will tilt downwards. This instability will increase, especially when the blades are rotating. The current solution is to shorten the blades, but this reduces the blades' ability to capture wind energy.

[0004] 2. The blades are fixed to the shaft of the wind turbine, which prevents them from adjusting according to wind speed and volume, resulting in a decrease in the blades' ability to capture wind energy. Utility Model Content

[0005] In order to solve the above problems, this application provides a blade for a horizontal wing power generation device.

[0006] The purpose of this application is to provide a blade for a horizontal wing wind turbine, wherein the windward area of ​​the front end of the blade is smaller than that of the rear end of the blade, the blade is mounted on a rotating hinge seat and the blade is hinged to the rotating hinge seat, the blade is suspended by a rope, and the blade structure is combined to overcome the weight of the blade itself, so that the blade can be made longer, thereby improving the wind energy capture effect of the blade and enabling the horizontal wing wind turbine to generate electricity.

[0007] To achieve the purpose of this application, the technical solution of this application is as follows:

[0008] A blade for a horizontal wing power generation device includes a blade body, wherein the frontal area of ​​the blade body is smaller than the frontal area of ​​the rear end of the blade body, and the angle between the lower end of the blade body and the horizontal plane is smaller than the angle between the upper end of the horizontal wing and the horizontal plane.

[0009] Furthermore, a connecting flange is provided at the front end of the blade body, and a connecting seat is provided on the connecting flange.

[0010] Furthermore, the connecting seat includes a connecting plate, on which a fixing bolt is provided. The fixing bolt passes through a through hole on the connecting flange and is screwed into a fixing nut.

[0011] Furthermore, a first hinge plate and a second hinge plate are provided at the end of the connecting plate away from the connecting flange, with the second hinge plate arranged on the side of the first hinge plate.

[0012] Furthermore, the first hinge plate and the second hinge plate are arranged at intervals.

[0013] Furthermore, the first hinge plate is provided with a first connecting through hole, and the second hinge plate is provided with a second connecting through hole.

[0014] Furthermore, the central axis of the first connecting through hole does not coincide with the central axis of the second connecting through hole.

[0015] Furthermore, a first wear-resistant sleeve is provided in the first connecting through hole, and a second wear-resistant sleeve is provided in the second connecting through hole.

[0016] Furthermore, a first lifting ring is provided at the rear end of the blade body.

[0017] Furthermore, a second lifting ring is provided at the front end of the blade body.

[0018] Furthermore, a guide vane is provided on the blade body, and a small wingtip is provided at the rear end of the blade body to ensure the stability of the blade during rotation and reduce the occurrence of blade flutter.

[0019] Compared with the prior art, the beneficial effects of this application are as follows:

[0020] The windward area at the front end of the blade body in this application is smaller than the windward area at the rear end of the blade body, so that the windward area of ​​the blade is mainly arranged at the rear end of the blade, thereby improving the wind energy capture effect of the blade. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0022] Figure 1 This is a schematic diagram of the overall structure of the wind turbine generator of this application;

[0023] Figure 2 for Figure 1 The front view;

[0024] Figure 3 This is a schematic diagram of the overall structure of the blade in this application;

[0025] Figure 4 This is a front view of the blade of this application;

[0026] Figure 5 This is a bottom view of the blade of this application.

[0027] In the picture:

[0028] 10. Blades; 20. Guy ropes; 30. Modular tower;

[0029] 1. Blade body; 2. Connecting plate; 3. First hinge plate; 4. Second hinge plate; 5. Connecting flange; 6. First lifting ring; 7. Second lifting ring. Detailed Implementation

[0030] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0031] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0032] In this application, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of the structural relationship between the various parts or elements of this application and do not specifically refer to any part or element in this application. They should not be construed as limiting this application.

[0033] Example 1

[0034] This embodiment is a blade for a horizontal wing power generation device. The blade 10 is installed on a horizontal wing wind turbine. Specifically, the horizontal wing wind turbine includes a modular tower 30. The upper end of the modular tower 30 is equipped with a rotating hinge seat that cooperates with the blade 10. The upper end of the rotating hinge seat is equipped with a column. The upper end of the column is equipped with a fixed pulley block. A rope winding and unwinding device is installed inside the column.

[0035] In this embodiment, the blade 10 is a lifting blade. Specifically, the blade 10 includes a blade body 1. The windward area of ​​the front end of the blade body 1 is smaller than that of the rear end of the blade body 1, which increases the windward area of ​​the rear end of the blade body 1, thereby enhancing the wind-catching ability. The angle between the lower end of the blade body 1 and the horizontal plane is smaller than the angle between the upper end of the horizontal blade and the horizontal plane, so that when the blade 10 rotates, it cooperates with the airflow to form a lifting structure. The blade 10 has an upward lift force, which serves as an auxiliary force to overcome the weight of the blade 10, reducing the tension of the pull rope 20. The blade 10 has an upward tendency to move, reducing the impact of the blade 10's own weight.

[0036] In addition, in order to reduce the impact of the self-weight of the blade 10 and adjust the blade 10 according to the wind speed and wind direction, as a specific implementation plan, the blade 10 and the rotating hinge seat are hinged. The blade 10 is lifted by the rope winding and unwinding device. The pull rope 20 on the rope winding and unwinding device passes through the fixed pulley on the fixed pulley group and is connected to the lifting ring on the blade 10. The blade 10 is lifted by the pull rope 20.

[0037] A first lifting ring 6 is installed at the rear end of the blade body 1, and a second lifting ring 7 is installed at the front end of the blade body 1. The end of the blade 10 closest to the rotary hinge seat is the front end of the blade 10 or the blade body 1, and the end of the blade 10 furthest from the rotary hinge seat is the rear end of the blade 10 or the blade body 1.

[0038] When the blade 10 rotates, the rotating body centered on the rotating hinge seat, the blade 10 rotates together with the rotating hinge seat.

[0039] As a connecting structure for the blade 10, in this embodiment, a connecting flange 5 is installed at the front end of the blade body 1, and a connecting seat is installed on the connecting flange 5. The connecting seat is fixedly connected to the connecting flange 5, so that the connecting seat is connected to the blade body 1. Specifically, the connecting seat includes a connecting plate 2, and the connecting plate 2 has fixing bolts. The connecting flange 5 is disc-shaped and has through holes for the fixing bolts. The fixing bolts pass through the through holes on the connecting flange 5 and are screwed to the fixing nut, so that the connecting flange 5 is fixed to the connecting plate 2 of the connecting seat.

[0040] As a scheme for the blade 10 to cooperate with the rotary hinge seat, the end of the connecting plate 2 away from the connecting flange 5 is provided with a first hinge plate 3 and a second hinge plate 4. The second hinge plate 4 is arranged on the side of the first hinge plate 3. In order to cooperate with the rotary hinge seat, the first hinge plate 3 and the second hinge plate 4 are arranged at intervals in this embodiment. The first hinge plate 3 is provided with a first connecting through hole, and the second hinge plate 4 is provided with a second connecting through hole. Specifically, the central axis of the first connecting through hole and the central axis of the second connecting through hole do not coincide. The first connecting through hole and the second connecting through hole are arranged alternately. In addition, the diameter of the first connecting through hole is larger than the diameter of the second connecting through hole.

[0041] In this embodiment, a first wear-resistant sleeve is installed in the first connecting through hole, and a second wear-resistant sleeve is installed in the second connecting through hole to reduce friction and wear between the hinge plate and the rotating hinge seat.

[0042] As a rotary hinge seat solution, the rotary hinge seat in this embodiment includes a vertical shaft. The vertical shaft is located at the center of the rotary hinge seat. Multiple hinge seats are installed on the outer periphery of the vertical shaft. The multiple hinge seats are evenly arranged around the center of the vertical shaft. Specifically, there is a disc-shaped top plate at the upper end of the vertical shaft, and a column is fixed on the top plate. There is a disc-shaped bottom plate at the lower end of the vertical shaft. The hinge seat includes two spaced partitions. There are two fixing plates in the space between the two partitions. There is a first hinge shaft between the two fixing plates and a second hinge shaft between the fixing plates and the partitions. The first hinge shaft cooperates with a first wear-resistant sleeve, and the second hinge shaft cooperates with a second wear-resistant sleeve. Furthermore, the fixing plates and partitions block the first hinge plate 3 and the second hinge plate 4 to prevent the blade 10 from undergoing lateral displacement.

[0043] The blade 10 in this embodiment is made of fiber material, which reduces the weight of the blade 10 and the surface of the blade 10 is smooth and without sharp edges.

[0044] In this embodiment, a guide vane is installed on the blade body 1. The guide vane can be evenly arranged on the surface of the blade body 1 to ensure the stability of the blade 10 rotation when the blade 10 rotates. In addition, since the blade 10 is arranged almost horizontally and is relatively long, the front end of the blade 10 can be connected to the rotating hinge seat, ensuring the stability of the front end of the blade 10. However, the rear end of the blade 10 is far away from the rotating hinge seat, and it is difficult to ensure the stability of the blade 10 by relying solely on the suspension rope. Therefore, in this embodiment, a winglet is arranged at the rear end of the blade body 1. The winglet is used to maintain the stability of the rear end of the blade 10 when it rotates. Furthermore, the length of the blade 10 can be increased, thereby better capturing wind energy and reducing the occurrence of blade flutter and other issues.

[0045] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

[0046] While the specific embodiments of this application have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of this application. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of this application are still within the scope of protection of this application.

Claims

1. A blade for a horizontal rotor power generation device, characterized in that, Including the blade body; The frontal area of ​​the blade body is smaller than the frontal area of ​​the rear end of the blade body. The angle between the lower end of the blade body and the horizontal plane is smaller than the angle between the upper end of the horizontal blade and the horizontal plane.

2. The blade for a horizontal rotor power generation device as described in claim 1, characterized in that: The front end of the blade body is provided with a connecting flange, and a connecting seat is provided on the connecting flange.

3. The blade for a horizontal wing power generation device as described in claim 2, characterized in that: The connecting seat includes a connecting plate, on which a fixing bolt is provided. The fixing bolt passes through a through hole on the connecting flange and is screwed into a fixing nut.

4. The blade for a horizontal rotor power generation device as described in claim 3, characterized in that: The connecting plate is provided with a first hinge plate and a second hinge plate at the end away from the connecting flange, and the second hinge plate is arranged on the side of the first hinge plate.

5. The blade for a horizontal rotor power generation device as described in claim 4, characterized in that: The first hinge plate and the second hinge plate are arranged at intervals.

6. The blade for a horizontal rotor power generation device as described in claim 4, characterized in that: The first hinge plate is provided with a first connecting through hole, and the second hinge plate is provided with a second connecting through hole.

7. The blade for a horizontal rotor power generation device as described in claim 6, characterized in that: The central axis of the first connecting through hole does not coincide with the central axis of the second connecting through hole.

8. The blade for a horizontal rotor power generation device as described in claim 6, characterized in that: A first wear-resistant sleeve is provided in the first connecting through hole, and a second wear-resistant sleeve is provided in the second connecting through hole.

9. The blade for a horizontal rotor power generation device as described in claim 1, characterized in that: A first lifting ring is provided at the rear end of the blade body, and a second lifting ring is provided at the front end of the blade body.

10. The blade for a horizontal rotor power generation device as described in claim 1, characterized in that: The blade body is provided with a guide vane, and the rear end of the blade body is provided with a winglet.

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