Windmill blade structure of vertical axis wind turbine

Abstract

The utility model relates to the field of wind power generation, and discloses a windmill blade structure of a vertical-axis wind driven generator, which comprises a windmill blade frame, a frame diagonal brace, a blade horizontal bar grating, blade fiber cloth and a frame connecting end, the frame diagonal braces are linearly connected with the opposite oblique angles of the windmill blade frame, the blade horizontal bar grids are linearly connected with the opposite sides of the windmill blade frame, the blade fiber cloth is installed on the inner side of the windmill blade frame, and the frame connecting ends are installed at the top and the bottom of the windmill blade frame. And the blade horizontal bar grids are positioned between the frame diagonal draw bars and the blade fiber cloth. The windmill blade structure has the following advantages and effects that the windmill blade structure of the wind driven generator can increase the working wind resistance of the vertical-axis wind driven generator and enlarge the working wind resistance difference, plays an important role in improving the wind energy utilization rate, reducing noise and the like, and further enlarge the single body scale of the vertical-axis wind driven generator.

Description

Technical Field

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

[0002] With the rapid development of industrial technology, global energy crisis and environmental protection issues have gradually emerged. The development and use of green energy such as wind energy and solar energy have increasingly shown their important value. Wind turbines are divided into horizontal axis and vertical axis according to the main shaft installation method. The traditional large wind turbine structure is generally a horizontal axis wind turbine.

[0003] In recent years, vertical axis wind turbine technology has developed rapidly, mainly in the medium and small sizes; the common disadvantages of traditional vertical axis wind turbines are: low efficiency, high noise, and small size of single units.

[0004] Therefore, it is necessary to design a vertical axis wind turbine wind turbine blade structure to solve the above problems.

[0005] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0006] The utility model aims to provide a windmill blade structure of a vertical axis wind turbine generator to solve the above problems.

[0007] The above technical purpose of the utility model is achieved through the following technical solutions: A vertical axis wind turbine wind turbine blade structure, comprising:

[0008] Windmill blade frame, frame oblique tie bars, blade horizontal grilles, blade fiber cloth and frame connection ends;

[0009] The frame oblique tie bars are connected to the windmill blade frame at opposite angles in a straight line, the blade horizontal bar grilles are connected to the opposite sides of the windmill blade frame in a straight line, the blade fiber cloth is installed on the inner side of the windmill blade frame, and the frame connection ends are installed on the top and bottom of the windmill blade frame.

[0010] The utility model is further configured as follows: the frame of the windmill blade is rectangular.

[0011] The utility model is further configured as follows: the included angle of the frames of adjacent windmill blades is 90°.

[0012] The utility model is further configured as follows: the blade horizontal bar grille is located between the frame oblique reinforcement and the blade fiber cloth.

[0013] By adopting the above technical solution, the frame oblique tie bars are located on the first layer, the blade horizontal bar grille is located on the second layer, and the blade fiber cloth is located on the third layer.

[0014] The beneficial effects of the utility model are:

[0015] 1. The utility model adopts blade fiber cloth and blade horizontal bar grille as the windward surface of the windmill blade, which greatly reduces the overall weight of the windmill blade and greatly reduces wind energy loss; it also adopts the form of fixing the windmill blade frame with frame oblique tie bars, so that the windmill blade strength is increased and remains firm without deformation, greatly expanding the windward working area of ​​the windmill blade and improving the wind speed working range;

[0016] 2. The wind turbine blades of the utility model have a simple structure, light weight, easy installation, large working area, durability, low wind speed start-up, wide wind speed operation, high wind energy efficiency, and no noise; they have higher working efficiency than the same type of wind turbine blades, and are suitable for power generation in various wind resource areas, grid-connected or independent power grids, and supply of industrial electricity to factories and enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 The utility model discloses a wind turbine blade structure of a vertical axis wind turbine.

[0019] Figure 2 The utility model discloses a side view cross-sectional structure diagram of a windmill blade frame portion in a windmill blade structure of a vertical axis wind turbine generator.

[0020] Figure 3 The utility model discloses a schematic diagram of a connection structure between a windmill blade frame and a frame oblique tie bar in a windmill blade structure of a vertical axis wind turbine generator.

[0021] Figure 4 The utility model discloses a schematic diagram of a connection structure between a windmill blade frame and a blade fiber cloth in a windmill blade structure of a vertical axis wind turbine generator.

[0022] In the figure, 1. windmill blade frame; 2. frame oblique tie bars; 3. blade horizontal grille; 4. blade fiber cloth; 5. frame connection end. DETAILED DESCRIPTION

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0024] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The utility model provides a vertical axis wind turbine wind turbine blade structure, comprising:

[0026] Windmill blade frame 1, frame oblique tie bars 2, blade horizontal grille 3, blade fiber cloth 4 and frame connection end 5;

[0027] The frame oblique tie bars 2 are connected to the windmill blade frame 1 at a pair of oblique straight lines, the blade horizontal bar grille 3 is connected to the opposite side straight lines of the windmill blade frame 1, the blade fiber cloth 4 is installed on the inner side of the windmill blade frame 1, and the frame connection end 5 is installed on the top and bottom of the windmill blade frame 1.

[0028] It should be noted that the blade fiber cloth 4 is provided on the blade to greatly reduce the weight of the windmill blade frame 1, expand the windward area, reduce wind energy consumption, buffer the wind impact force when converted to the working surface, and expand the blade working stroke angle;

[0029] The frame oblique tie bars 2 cross the center of the windmill blade frame 1 to reduce the weight and ensure that the blade structure is stable and does not deform when impacted by excessive wind force.

[0030] like Figure 1 and Figure 2 As shown, the windmill blade structure is more stable and firm than the traditional vertical wind turbine blade cross-section.

[0031] Specifically, the windmill blade frame 1 is rectangular, and the angle between adjacent windmill blade frames 1 is 90°. It should be noted that the shape of the windmill blade frame 1 is limited.

[0032] Specifically, the blade horizontal bar grille 3 is located between the frame oblique reinforcement 2 and the blade fiber cloth 4. It should be noted that the frame oblique reinforcement 2 is located on the first layer of the windward working surface, the blade horizontal bar grille 3 is located on the second layer of the windward working surface, and the blade fiber cloth 4 is located on the third layer of the windward working surface.

[0033] Working principle:

[0034] The frame connection end 5 is connected to the windmill of the wind turbine generator. The function of the frame connection end 5 is to transfer the mechanical energy generated by the windmill blades to the wind turbine generator. When the blades return, displacement and flipping occur to reduce the working resistance loss of the generator. The setting of the frame oblique tie rod 2 is to ensure that the windmill blade frame 1 structure is stable and not deformed. The setting of the blade horizontal bar grille 3 is to ensure that the windmill blade frame 1 is converted to the return stroke so that the blade fiber cloth 4 is uniformly subjected to the maximum impact of wind force and flipped open in time. The setting of the blade fiber cloth 4 is to reduce the weight of the blade structure and reduce wind energy loss. The wind blows the blades, and the windmill blade structure rotates to provide mechanical energy for the wind turbine generator. It flips open during the return stroke to reduce wind energy loss.

[0035] The above is a detailed introduction to a wind turbine blade structure of a vertical axis wind turbine provided by the utility model. This article uses specific embodiments to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A vertical axis wind turbine wind turbine blade structure, characterized in that: include: Windmill blade frame (1), frame oblique tie bars (2), blade horizontal grille (3), blade fiber cloth (4) and frame connection end (5); The frame oblique tie bars (2) are connected to the windmill blade frame (1) at opposite angles in a straight line, the blade horizontal bar grille (3) is connected to the opposite sides of the windmill blade frame (1) in a straight line, the blade fiber cloth (4) is installed on the inner side of the windmill blade frame (1), and the frame connection ends (5) are installed on the top and bottom of the windmill blade frame (1).

2. A vertical axis wind turbine wind turbine blade structure according to claim 1, characterized in that: The windmill blade frame (1) is rectangular.

3. A vertical axis wind turbine wind turbine blade structure according to claim 1, characterized in that: The included angle between adjacent windmill blade frames (1) is 90°.

4. A vertical axis wind turbine wind turbine blade structure according to claim 1, characterized in that: The blade horizontal bar grille (3) is located between the frame oblique tie bars (2) and the blade fiber cloth (4).

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