CN221799982U - A windmill with naturally variable angle lightweight blade facing the wind - Google Patents

Abstract

The utility model discloses a windmill windward natural variable angle light-weight fan blade which comprises a blade and an arc-shaped clamp, wherein the cross section of the blade is trapezoidal, at least one fixing base is fixedly arranged on the end face of the root of the blade, the fixing base is fixedly connected with the arc-shaped clamp through at least one elastic connecting piece, and the elastic connecting piece is made of elastic materials. The wind wheel has the characteristics of light weight, large cable wind area, elastic deformation under wind force, low manufacturing cost, convenient replacement and the like, improves the stability of the rotation of the wind wheel along with the wind, and also improves the efficiency of the wind wheel for collecting wind energy.

Description

A windmill with naturally variable angle lightweight blade facing the wind

Technical Field

The utility model relates to the field of wind power generation devices, in particular to a lightweight wind blade of a windmill with naturally variable angles facing the wind.

Background Art

Wind energy is a renewable energy source that is harmless to the environment and ecology and has very good benefits. In addition, my country, which has abundant natural wind power, has relatively mature wind power generation technology. Three-blade propeller fans all control the windward angle of the blades through a mechanical automatic control system, always keeping the windward angle of the blades at 90 degrees, that is, the windward side of the blades is perpendicular to the wind direction, so as to maximize the conversion rate of wind energy. However, in extremely bad weather, the blades cannot automatically adjust the windward angle. As the wind force increases, the force on the blades increases. When the wind force exceeds the bearing capacity of the blades, there is a problem of breakage and damage. In addition, the blades of traditional three-blade propeller fans are large in size and heavy in weight, which makes installation and transportation very inconvenient.

Utility Model Content

In order to solve the above technical problems, the utility model provides a windmill with a naturally variable angle lightweight wind blade facing the wind, including a blade and an arc clip. The cross-section of the blade is trapezoidal, and at least one fixed base is fixedly provided on the root end face of the blade. The fixed base is fixedly connected to the arc clip by at least one elastic connecting piece, and the elastic connecting piece is made of elastic material.

Specifically, the blade is made of polystyrene foam, and the outer surface of the blade is painted with a layer of water paint.

The beneficial effects of the utility model are as follows: the utility model realizes that the windward angle of the wind blade naturally increases or decreases with the increase or decrease of wind speed and wind pressure through the elastic connection between the structure of the wind blade base and the arc clip, thereby improving the stability of the wind wheel rotating with the wind and also improving the efficiency of the wind wheel in collecting wind energy. The utility model is cast from polystyrene foam and painted with water paint on the surface. Each blade weighs only a few dozen grams. Even if the wind blade falls off and floats down with the wind, it will not cause any damage to the surrounding environment. It also has good waterproof performance and strong corrosion resistance.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a schematic diagram of the overall structure of the utility model;

FIG2 is a schematic diagram of the structure of the elastic silicone connector of the utility model;

In the figure: 1. blade, 2. arc clip, 3. fixed base, 4. elastic connecting piece.

DETAILED DESCRIPTION

In order to make the purpose, technical scheme and technical advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

Please refer to Figures 1 and 2. The utility model embodiment discloses a wind turbine windward natural variable angle lightweight wind blade, including a blade 1 and an arc clip 2. The cross section of the blade 1 is trapezoidal. At least one fixed base 3 is fixedly provided on the root end surface of the blade 1. The fixed base 3 is fixedly connected to the arc clip 2 through at least one elastic connector 4. The elastic connector 4 is made of elastic material. In this embodiment, the blade 1 is elastically connected to the arc clip 2 through the elastic connector 4, and the arc clip 2 is fixedly connected to the wind wheel of the wind turbine. A plurality of elastic connectors 4 are arranged between the fixed base 3 and the arc clip 2. When the wind blade is subjected to wind pressure, the elastic connector 4 is deformed, and the windward angle of the wind blade is naturally adjusted with the size of the wind speed and wind pressure. When the wind is small, the elastic connector 4 is deformed less and the windward angle of the wind blade is large. When the wind is large, the elastic connector 4 is deformed more and the windward angle of the wind blade is small. The windward angle of the wind blade naturally increases or decreases with the increase or decrease of wind speed and wind pressure, thereby improving the stability of the wind wheel rotating with the wind and also improving the efficiency of the wind wheel in collecting wind energy.

As a preferred embodiment, the blade 1 is made of polystyrene foam, and a layer of water paint is applied to the outer surface of the blade 1. The blade 1 is made of lightweight material, and the specific gravity of the whole windmill is less than 0.1. Each blade 1 weighs only tens of grams. Even if the wind blade falls off and floats down with the wind, it will not cause any damage to the surrounding environment. It also has good waterproof performance and strong corrosion resistance.

The directions and positions mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., are only for reference to the directions or positions of the drawings. Therefore, the directions and positions used are used to explain and understand the present invention, but not to limit the scope of protection of the present invention.

What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the technical solution and inventive concept of the present invention, which should be covered by the protection scope of the present invention.

Claims (2)

1. The utility model provides a windmill is windward and is naturally changed angle light-duty fan blade which characterized in that: the fan blade comprises a blade and an arc-shaped clamp, the cross section of the blade is trapezoidal, at least one fixing base is fixedly arranged on the end face of the root of the blade, the fixing base is fixedly connected with the arc-shaped clamp through at least one elastic connecting piece, and the elastic connecting piece is made of elastic materials.

2. The light wind blade of claim 1, wherein the light wind blade is characterized in that: the blade is made of polystyrene foam materials, and the outer surface of the blade is coated with a layer of water paint.