A movable wing for a vertical axis wind turbine blade

Abstract

A movable wing of a vertical axis wind turbine blade, the movable wing comprising a plate, a reinforcing frame, a hole and a counterweight, wherein the reinforcing frame comprises a side reinforcing frame and an internal reinforcing frame, the side reinforcing frame is a protrusion fixed on the outer edge of one side of the plate, and the internal reinforcing frame is a protrusion fixed inside the side reinforcing frame; the hole is a hole opened at a predetermined position of the reinforcing frame; and the counterweight is arranged in the frame of the reinforcing frame.

Description

Technical Field

[0001] This invention relates to the field of wind power engine technology, and in particular to a movable blade for a vertical axis wind power engine blade. Background Technology

[0002] Wind power, as a clean and renewable energy source, has experienced rapid development.

[0003] In vertical axis wind turbines, drag-type vertical axis wind turbines (such as cup turbines) reduce the total torque of the rotating shaft by the reverse torque generated by the blades in the upwind half of the turbine during operation. In contrast, vertical axis wind turbines with movable blades have a movable blade that is rotatably connected to the frame at the top and can be opened, as shown in 200820139674.X and 201110257812.0. When the turbine blades are in the downwind half of the turbine, the movable blade descends to close the air duct and perform work. When the turbine blades are in the upwind half of the turbine, the flat movable blade opens, and the wind passes directly through the middle of the frame, reducing the turbine drag. This minimizes the reverse torque of the blades in the upwind half of the turbine, thereby obtaining greater kinetic energy and theoretically achieving higher wind energy conversion efficiency.

[0004] The inventors discovered that the problems with this type of plate-type movable wing are that when the thickness of the movable wing plate is large, the weight tends to increase, and the movable wing is difficult to open at low wind speeds; when the thickness of the plate-type movable wing is small, it is prone to deformation, and the blades have low wind capture efficiency in the downwind half-zone. Therefore, further improvements to the technology of vertical axis wind turbines are needed to enable them to capture wind energy more effectively, which has become an urgent engineering problem to be solved. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of existing technologies for vertical axis wind turbine blades, such as increased weight when the thickness is large, difficulty in opening the blade at low wind speeds, easy deformation when the thickness is small, and low wind capture efficiency in the downwind working zone. The invention provides a vertical axis wind turbine blade with high structural strength, less susceptibility to deformation, and higher wind capture efficiency in the downwind working zone.

[0006] The objective of this invention is achieved through the following technical solution: A movable wing for a vertical axis wind turbine blade, the movable wing comprising a plate (1), a reinforcing frame (2), an opening (3), and a counterweight (4), wherein the reinforcing frame (2) comprises an edge reinforcing frame (21) and an inner reinforcing frame (22), the edge reinforcing frame (21) being a protrusion fixed to the outer edge of one side of the plate (1), and the inner reinforcing frame (22) being a protrusion fixed to the inner side of the edge reinforcing frame (21); the opening (3) being a hole opened at a predetermined position in the reinforcing frame (2); and the counterweight (4) being installed inside the frame of the reinforcing frame (2).

[0007] The advantages and beneficial effects of this invention are: 1. The movable wing has a higher wind-catching efficiency, which is beneficial to the wind power engine's higher wind energy conversion efficiency; 2. The movable wings have higher strength, longer durability, and are less prone to deformation; 3. Reduce carbon emissions and provide green energy.

[0008] 4. High recycling rate and low pollution rate. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0010] Figure 1 This is a three-dimensional schematic diagram of the groove on the flat surface of the movable wing of the present invention.

[0011] Figure 2 This is a three-dimensional schematic diagram of the arc-shaped surface of the movable wing of the present invention with a hexagonal groove.

[0012] Figure 3 This is a three-dimensional schematic diagram of the convex surface of the movable wing of the present invention having a rectangular groove. Detailed Implementation

[0013] The technical solutions of the embodiments of the present invention will be preferably described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0014] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0015] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if "and / or" or "and / or" appears throughout the text, it includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies solutions A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0016] like Figure 1 , 2 As shown in Figure 3, Example

[0017] like Figure 1 , 2 As shown in Figure 3, a movable wing for a vertical axis wind turbine blade includes a plate (1), a reinforcing frame (2), an opening (3), and a counterweight (4). The reinforcing frame (2) includes an edge reinforcing frame (21) and an inner reinforcing frame (22). The edge reinforcing frame (21) is a protrusion fixed to the outer edge of one side of the plate (1), and the inner reinforcing frame (22) is a protrusion fixed to the inner side of the edge reinforcing frame (21). The opening (3) is a hole opened at a predetermined position in the reinforcing frame (2). The counterweight (4) is installed inside the frame of the reinforcing frame (2).

[0018] In an optional embodiment, the plate-shaped object (1) is a metal plate.

[0019] In an optional embodiment, the plate-shaped object (1) is a flat surface, or a convex surface with the middle higher than the periphery, or an arc-shaped surface with the middle higher than both ends.

[0020] In an optional implementation, the edge reinforcement frame (21) is formed by bending the four sides of the plate (1), wherein one symmetrical frame is bent three times and the opening (3) is opened at the preset position, and the other symmetrical frame is bent once.

[0021] In an optional implementation, the preset position is a coaxial center line that is symmetrical to each other within half the length of one of the pairs of side frames on the edge reinforcement frame (21).

[0022] In an optional embodiment, the internal reinforcing frame (22) includes longitudinal, and / or transverse, and / or diagonal frame strips, and the internal reinforcing frame (22) is welded and fixed perpendicular to the plate (1).

[0023] In an optional implementation, the opening (3) is circular, polygonal, or a combination of semicircle and rectangle.

[0024] In an optional embodiment, a plurality of round holes are provided on the outside of the opening (3) on the edge reinforcement frame (21) formed by the third bending of the plate (1), and the holes are used to install rivet bolts.

[0025] In an optional implementation, the counterweight (4) is installed in the frame on the side of the edge reinforcement frame (21) that is shorter than the preset position.

[0026] In an optional implementation, the counterweight (4) is a steel plate, a steel block, or a steel pipe filled with a filling material.

[0027] The counterweight (4) is used to make the weight of the movable wing different on both sides of the opening (4), with the side with the larger wing plate area having a greater weight than the side with the smaller area, so that when the plate (1) is not subjected to external force, the side with the larger wing plate area is lower than the height of the opening; at the same time, it ensures that when the movable wing is in the upwind half-zone, the smaller wind force causes the movable wing to rotate.

[0028] The counterweight (4) also includes a threaded hole for installing weights so that the weight on both sides of the hole is in an ideal state.

Claims

1. A movable blade for a vertical axis wind turbine blade, characterized in that: The movable wing includes a plate-like structure (1), a reinforcing frame (2), an opening (3), and a counterweight (4), wherein... The reinforcing frame (2) includes an edge reinforcing frame (21) and an inner reinforcing frame (22). The edge reinforcing frame (21) is a protrusion fixed to the outer edge of one side of the plate (1). The inner reinforcing frame (22) is a protrusion fixed to the inner side of the edge reinforcing frame (21). The opening (3) is a hole opened at a predetermined position in the reinforcing frame (2); The counterweight (4) is installed inside the frame of the reinforcing frame (2).

2. The movable blade of a vertical axis wind turbine blade according to claim 1, characterized in that: The plate-shaped object (1) is a metal plate.

3. The movable blade of a vertical axis wind turbine blade according to claims 1 and 2, characterized in that: The plate-shaped object (1) is a flat surface, or a convex surface with the middle higher than the periphery, or an arc-shaped surface with the middle higher than both ends.

4. The movable blade of a vertical axis wind turbine blade according to claim 1, characterized in that: The edge reinforcement frame (21) is formed by bending the four sides of the plate (1), one of the symmetrical frames is bent three times and the opening (3) is opened at the preset position, and the other symmetrical frame is bent once.

5. The movable blade of a vertical axis wind turbine blade according to claim 1, characterized in that: The preset position is on the coaxial center line that is symmetrical to each other within half the length of one of the two side frames on the edge reinforcement frame (21).

6. The movable blade of a vertical axis wind turbine blade according to claim 1, characterized in that: The internal reinforcing frame (22) includes longitudinal, and / or transverse, and / or diagonal frame bars, and the internal reinforcing frame (22) is welded and fixed perpendicular to the plate (1).

7. The movable blade of a vertical axis wind turbine blade according to claim 1, characterized in that: The opening (3) is circular, polygonal, or a combination of semicircle and rectangle.

8. The movable blade of a vertical axis wind turbine blade according to claims 1 and 4, characterized in that: Several round holes are opened on the outside of the opening (3) on the edge reinforcement frame (21) formed by the third bending of the plate (1).

9. The movable blade of a vertical axis wind turbine blade according to claim 1, characterized in that: The counterweight (4) is installed in the frame on the side of the edge reinforcement frame (21) that is shorter than the preset position.

10. A movable blade for a vertical axis wind turbine blade according to claims 1 and 8, characterized in that: The counterweight (4) is a steel plate, a steel block, or a steel pipe filled with filler.

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