CN203239500U - Wind driven generator device capable of being applied to horizontal shaft type and perpendicular shaft type - Google Patents

Abstract

The utility model relates to a wind power generator, in particular to a wind power generator device with a common horizontal axis and a vertical axis. It includes a main shaft that can be vertical or parallel to the ground, a generator device, and blades. It is characterized in that: the blades are not connected by connecting rods, and their two ends are directly connected to the top of the generator or one end is connected to the main shaft, and the other end is connected to the main shaft. It is connected to the top of the generator, but the blades are equally spaced around the main shaft. The utility model solves the problems of difficulty in starting the wind power generator and low efficiency, and that the horizontal axis and the vertical axis of the blades of the wind power generator cannot be used in common use. The utility model has the advantages of simple structure, small volume, low cost and high power generation efficiency, and provides good technical support for the popularization of wind power generation.

Description

A kind of wind power generator device with common horizontal axis and vertical axis

technical field

The utility model relates to a wind power generator, in particular to a wind power generator device with a common horizontal axis and a vertical axis. the

Background technique

Wind turbines are currently divided into two types, vertical axis and horizontal axis. In a wind turbine, the available wind energy is the wind energy in the wind speed range between the cut-in wind speed and the shutdown wind speed. The wind energy in this range is the effective wind energy. Reducing the start-up wind speed and the cut-in wind speed can increase the utilization of effective wind energy. Under the same wind speed, increasing the output power can greatly increase the utilization rate of effective wind energy. Although horizontal-axis wind turbines currently account for 95% of the market share, there are still the following problems due to their design defects. One is that the blades of horizontal axis wind turbines have different torsion angles, chord lengths, and tip speed ratios in each section. The momentum-blade element theory is generally used in the design of the blades. However, the blade element theory ignores the relationship between blade elements. Flow disturbance, and the resistance of the airfoil is ignored when applying the leaf element theory to design the blade. This simplification inevitably leads to inaccurate results. This simplification has little impact on the blade shape design, but it has The wind energy utilization rate of the wind rotor has a great influence, and the windward side of the wind rotor cannot always face the wind, which causes "wind loss", so the wind energy utilization rate is only about 30%; The wind speed range that can be used is narrowed, which reduces its power generation efficiency; third, the tip speed ratio of the horizontal axis wind rotor is generally around 5~7. Birds are also hard-pressed to survive under such high-speed blades. Although the blades of vertical axis generator wind rotors can already be designed by CFD method, this CFD technology can fully simulate the complex flow under complex shapes, which is much more accurate than the blade element theory. However, the flow of air will generate unbalanced torque on the right and left blades of the vertical axis wind rotor like the H type, which will cause relatively large shaking of the wind rotor and cause potential safety hazards. the

Contents of the invention

In view of the above defects, the utility model provides an improved wind power generator device, which solves the above defects of the wind power generator. the

To achieve the above object, the technical solution of the utility model is:

A wind power generator device with a common horizontal axis and a vertical axis, including a main shaft perpendicular or parallel to the ground, a generator device, and blades. or one end is connected to the main shaft, and the other end is connected to the top of the generator, but the blades are all equidistantly distributed around the main shaft; the number of the blade groups is an odd number or an even number multiple. The further improvement of the utility model is: the shape of the blade is a saddle-shaped curve or a hyperbolic structure; the section of the blade is wing-shaped, square, diamond-shaped, or elliptical.

Description of drawings

Fig. 1 is a front view of the utility model; Fig. 2 is a side view of a blade. In the figure: symbol 1 is the blade; symbol 2 is the wind generator; symbol 3 is the main shaft. the

Detailed ways

In order to deepen the understanding of the utility model, the utility model will be further described below in conjunction with the accompanying drawings and examples. The examples are only used to explain the utility model and are not enough to limit the protection scope of the utility model. the

Shown with reference to Fig. 1: the utility model relates to a kind of wind power generator, comprise and the main shaft 3 that is vertical or parallel to the ground, the power generation device 2 that is installed on the main shaft 3, the blade 1 of three saddle-shaped hyperbolic structures, the three blades 1. Connecting rods are not used, and are directly distributed equidistantly around the generator 2 or the main shaft 3. the

As shown in Fig. 2: the wind rotor blade 1 of the present utility model is a saddle-shaped hyperbolic structure, and the two ends of the blade 1 are directly connected equidistantly with the top of the generator 2, and the main shaft 3 is parallel to the ground, which is similar to a pinwheel pattern. The horizontal axis wind turbine; one end of the blade 1 is directly connected equidistantly around the main shaft, and the other end is directly connected equidistantly around the top of the generator 2 with a distance between the diameters of the other end, and the main shaft 3 is perpendicular to the ground, so it can be used as a vertical Shaft generators are used. the

The saddle-shaped hyperbolic structure of the blade 1, during the rotation process, the short side of the blade will draw the airflow diverged from the outside into the wind wheel again, which can reduce the loss of wind energy, which is equivalent to increasing the wind. Because the blade 1 does not have a tip like a propeller blade, the tip vortex will not be formed when the blade rotates and cuts the airflow, so no aerodynamic noise and vibration will be generated; the blade 1 can be designed by CFD method, While it is more accurate than the blade element theory, it also reduces the time spent on design and saves time and cost; because the blade 1 has no connecting rod, the flow of the airflow is not like the right and left sides of the H-type vertical axis wind turbine rotor. The unbalanced torque generated by the side blades will not cause the shaking of the wind wheel, which improves the wind resistance, reduces potential safety hazards and saves production costs. the

Through theoretical calculation, the area of the blade 1 of the wind power generator device of the present invention is about half of the area of the propeller blade of the same power generator. Since there is no connecting rod, it has strong wind resistance, can start at low wind speed, has no noise, and is relatively The efficiency is 10~30% higher than that of the same type of wind turbine. Since the horizontal axis and vertical axis of the blade 1 are common, the investment cost of the wind turbine blade production line is reduced. Due to its small rotating space, small size and high power generation efficiency, this greatly improves its application in wind power building integration projects, reaching The economic benefit of saving power resources and the ecological benefit of reducing carbon dioxide emissions. the

Claims (3)

1. A general-purpose wind power generator device with a horizontal axis and a vertical axis, comprising a main shaft perpendicular or parallel to the ground, a generator device, and blades, characterized in that: the blades are not connected by connecting rods, and its two ends are directly connected to the power generating The top of the machine is connected or one end is connected to the main shaft, and the other end is connected to the top of the generator, but the blades are equidistantly distributed around the main shaft. 2. The wind power generator device with common horizontal axis and vertical axis according to claim 1, characterized in that: the number of blade groups is an odd number or an even number. 3. According to claim 1 or 2, a common horizontal axis and vertical axis wind power generator device is characterized in that: the shape of the blade is a saddle-shaped curve or a hyperbolic structure; the section of the blade is an airfoil Shape, square, rhombus, oval cross-section.

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