A wind power plant

Abstract

The utility model relates to wind power generation technical field discloses a kind of wind power generation device, comprising: wind wheel, wind wheel has the first mounting plate and the second mounting plate of interval arrangement along vertical direction, the interval between the first mounting plate and the second mounting plate is used to install blade;Blade is spaced apart with multiple along the circumference of wind wheel, blade is inclinedly arranged along vertical direction, the first mounting plate is used to with the first end of the length of blade detachable connection, the second mounting plate is used to with the second end of the length of blade detachable connection, the first end of blade and the second end of blade exist interval in horizontal direction, the utility model is inclinedly arranged along vertical direction by blade, so that the first end of blade and the second end exist interval in horizontal direction, to effectively adjust the attack angle of blade and wind direction, reduce stall phenomenon, improve wind energy capture efficiency.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation technology, and specifically to a wind power generation device. Background Technology

[0002] The wind turbine is the core component of a vertical axis wind turbine. Its rotation axis is perpendicular to the ground, and the blades rotate around the vertical axis in a horizontal plane. Compared to horizontal axis blades, it has the advantages of not requiring wind alignment devices, low starting wind speed, and convenient maintenance, making it suitable for scenarios with variable wind direction and limited space.

[0003] Under current technological conditions, wind turbine blades generally adopt a straight-plate design. During the rotation of the wind turbine, the angle of attack between the blades and the wind direction constantly changes, inevitably leading to stall. Stall refers to the inability of the blades to effectively capture wind energy at a specific angle of attack, resulting in airflow separation and a sharp decrease in blade lift.

[0004] Stall severely affects the aerodynamic performance of wind turbine blades, significantly reducing the overall efficiency of the wind turbine in the wind energy conversion process, making it impossible to generate wind power more efficiently. Utility Model Content

[0005] In view of this, the present invention provides a wind power generation device to solve the problem of stalling when the straight blades rotate in the prior art.

[0006] In a first aspect, the present invention provides a wind power generation device, comprising: a wind turbine, the wind turbine having a first mounting plate and a second mounting plate spaced apart in a vertical direction, the interval between the first mounting plate and the second mounting plate being used for mounting blades;

[0007] Multiple blades are spaced apart along the circumference of the wind turbine. The blades are inclined in the vertical direction. The first mounting plate is detachably connected to the first end of the blade length, and the second mounting plate is detachably connected to the second end of the blade length. There is a gap between the first end and the second end of the blade in the horizontal direction.

[0008] By tilting the blades vertically, a gap exists between the first and second ends of the blades in the horizontal direction, effectively adjusting the angle of attack between the blades and the wind direction, reducing stalling, and improving wind energy capture efficiency.

[0009] In one alternative embodiment, the first end of the blade extends helically toward the second end at an angle.

[0010] By setting the blades to extend in an inclined spiral, a spiral airflow is formed at the center of the wind turbine, further optimizing the contact angle between the blades and wind energy and increasing power generation. When the spiral blades rotate, the wind turbine generates a rotating upward airflow at the center of the turbine, which generates a force in the axial direction of the turbine to push it to continue rotating. The airflow has an aerodynamic effect similar to a "tornado", which improves the overall aerodynamic performance of the wind turbine.

[0011] In one optional embodiment, the first mounting plate and the second mounting plate each have a first support arm and a second support arm extending radially outward along the wind turbine, the first support arm being provided in a plurality of spaced intervals along the circumference of the first mounting plate, and the second support arm being provided in a plurality of spaced intervals along the circumference of the second mounting plate.

[0012] By setting up a first support arm and a second support arm, the first end and the second end of the blade in the length direction are respectively installed on the first support arm and the second support arm, which enhances the stability and wind resistance of the blade and further optimizes the overall structure of the wind turbine.

[0013] In one alternative embodiment, the first support arm and the second support arm are staggered along the circumferential direction of the wind turbine.

[0014] By staggering the first and second support arms along the circumference of the wind turbine, a uniform force distribution is formed, effectively balancing the wind torque on the blades and reducing vibration.

[0015] In one alternative implementation, the length of the first support arm is equal to the length of the second support arm.

[0016] By setting the length of the first support arm to be equal to the length of the second support arm, when the first end and the second end of the blade are respectively installed on the first support arm and the second support arm, the tilt angle of the blade in the vertical direction remains consistent, ensuring that the blade is subjected to uniform force during rotation and improving the stability of the wind turbine.

[0017] In one optional embodiment, reinforcing ribs are provided on the horizontal end faces of the first support arm and / or the second support arm extending in the vertical direction.

[0018] By adding reinforcing ribs, the first and second support arms are strengthened, enhancing the structural strength of the support arms, effectively resisting the impact of strong winds, and further improving the overall stability and service life of the wind turbine.

[0019] In one alternative embodiment, the blade is connected to the first support arm and the second support arm by fasteners.

[0020] By setting fasteners, the blades are installed onto the first and second support arms, ensuring a firm and reliable connection and preventing the blades from falling off during high-speed rotation. This also facilitates quick blade replacement and maintenance. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a perspective view of a wind power generation device according to an embodiment of the present utility model;

[0023] Figure 2 for Figure 1 A perspective view of another embodiment of the wind power generation device shown.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Wind turbine; 2. First mounting plate; 3. Second mounting plate; 4. First support arm; 5. Second support arm; 6. Blade. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] The following is combined Figures 1 to 2 The following describes embodiments of the present invention.

[0028] like Figure 1As shown, according to an embodiment of this utility model, a wind power generation device is provided, including: a wind turbine 1. The structure of the wind turbine 1 is existing technology. The vertical axis wind turbine 1 is the core component of a vertical axis wind turbine, and its rotation axis is perpendicular to the ground. The blades 6 of the wind turbine 1 rotate around the vertical axis to capture wind energy. In this embodiment, the blades 6 are lift blades 6. The wind turbine 1 has a first mounting plate 2 and a second mounting plate 3 spaced apart along the vertical direction, and the first mounting plate 2 and the second mounting plate 3 are horizontally arranged. The gap between the first mounting plate 2 and the second mounting plate 3 is used to install the blades 6, and the blades 6 are installed at one radial end of the first mounting plate 2 and the second mounting plate 3. Multiple blades 6 are spaced apart along the circumference of the wind turbine 1, and the blades 6 are inclined along the vertical direction. The first mounting plate 2 is detachably connected to a first end of the blade 6, and the second mounting plate 3 is detachably connected to a second end of the blade 6. The first end and the second end of the blade 6 are spaced apart in the horizontal direction, meaning that the first end and the second end of the blade 6 are not on the same vertical plane. By tilting the blade 6 vertically, a gap exists between the first and second ends of the blade 6 in the horizontal direction, thereby effectively adjusting the angle of attack between the blade 6 and the wind direction, reducing stalling, and improving wind energy capture efficiency.

[0029] like Figure 2 As shown, in this embodiment, the first end of blade 6 extends in a helical angle towards the second end. The helical angle of blade 6 is 5 degrees. This allows blade 6 to more effectively guide airflow, creating a more stable laminar flow on its surface, reducing turbulence and energy loss, thereby improving wind power generation efficiency. By setting blade 6 to extend in a helical angle, a spiral airflow is formed at the center of the rotor 1, further optimizing the contact angle between blade 6 and wind energy and increasing power generation. It should be noted that, as an alternative implementation, the helical angle of blade 6 can also be set to 3-10 degrees. Furthermore, the helical design of blade 6 can adaptively adjust the angle of attack under different wind speeds. A sensor is installed at the upper end of the rotor 1 to detect wind speed. Blade 6 and rotor 1 are connected by a rotational connection. A micro-motor is installed on rotor 1, and the motor's drive shaft is connected to blade 6, enabling the motor to drive blade 6 to rotate.

[0030] like Figure 1As shown, in this embodiment, the first mounting plate 2 and the second mounting plate 3 respectively have a first support arm 4 and a second support arm 5 extending radially outward along the wind turbine 1. Multiple first support arms 4 are spaced apart circumferentially along the first mounting plate 2, and multiple second support arms 5 are spaced apart circumferentially along the second mounting plate 3. The first mounting plate 2 is a circular plate structure, with multiple first support arms 4 extending radially outward along the first mounting plate 2. The structure of the second mounting plate 3 is the same as that of the first mounting plate 2. A rotating shaft is located at the center of the first mounting plate 2 and the second mounting plate 3, and a generator is located at the lower end of the rotating shaft. When the blade 6 drives the rotating shaft to rotate, the generator generates electricity. By setting the first support arms 4 and the second support arms 5, the first end and the second end of the blade 6 in the length direction are respectively mounted on the first support arms 4 and the second support arms 5, enhancing the stability and wind resistance of the blade 6 and further optimizing the overall structure of the wind turbine 1. It should be noted that, as an alternative implementation, five first support arms 4 and five second support arms 5 are each provided on the first mounting plate 2 and the second mounting plate 3.

[0031] like Figure 1 As shown, in this embodiment, the first support arm 4 and the second support arm 5 are staggered along the circumferential direction of the wind turbine 1. The staggered arrangement means that the first support arm 4 and the second support arm 5 are not arranged in a one-to-one correspondence along the circumference of the wind turbine 1, but are offset from each other, forming a staggered layout. This ensures that after the blade 6 is installed on the first support arm 4 and the second support arm 5, the blade 6 is in an inclined state. By staggering the first support arm 4 and the second support arm 5 along the circumference of the wind turbine 1, a uniform force distribution is formed, effectively balancing the wind torque on the blade 6 and reducing vibration. It should be noted that, as an alternative implementation, the first support arm 4 and the second support arm 5 can also be arranged without staggering, but rather in the same vertical plane. In this case, the width of the first support arm 4 and the second support arm 5 can be increased, and the blade 6 can still be installed on the first support arm 4 and the second support arm 5.

[0032] like Figure 1 As shown, in this embodiment, the length of the first support arm 4 is equal to the length of the second support arm 5. When the first end and the second end of the blade 6 are respectively mounted on the first support arm 4 and the second support arm 5, the tilt angle of the blade 6 in the vertical direction remains consistent. By setting the length of the first support arm 4 to be equal to the length of the second support arm 5, when the first end and the second end of the blade 6 are respectively mounted on the first support arm 4 and the second support arm 5, the tilt angle of the blade 6 in the vertical direction remains consistent, ensuring that the blade 6 experiences uniform force during rotation and improving the stability of the wind turbine 1. It should be noted that, as an alternative implementation, the length of the first support arm 4 can be greater than the length of the second support arm 5.

[0033] like Figure 1As shown, in this embodiment, reinforcing ribs are provided on the horizontal end faces of the first support arm 4 and the second support arm 5, extending vertically. The reinforcing ribs are vertically arranged plate-like structures. The length of the reinforcing ribs is the same as the length of the first support arm 4 and the second support arm 5. By providing reinforcing ribs, the first support arm 4 and the second support arm 5 are reinforced, enhancing the structural strength of the support arms, effectively resisting strong wind impacts, and further improving the overall stability and service life of the wind turbine 1. It should be noted that, as an alternative implementation, the thickness of the first support arm 4 and the second support arm 5 is set to...

[0034] like Figure 1 As shown, in this embodiment, the blade 6 is connected to the first support arm 4 and the second support arm 5 via fasteners. By using fasteners, the blade 6 is mounted onto the first support arm 4 and the second support arm 5, ensuring a secure and reliable connection, preventing the blade 6 from falling off during high-speed rotation, and facilitating quick replacement and maintenance of the blade 6. Specifically, the fastener is a bolt, and the first support arm 4 and the second support arm 5 have vertically oriented through holes that penetrate both arms. It should be noted that, as an alternative implementation, the fastener can also be a screw.

[0035] Installation method of the wind power generation device: Connect the first mounting plate 2 and the second mounting plate 3 to the rotating shaft, ensuring that they are horizontal and spaced apart in the vertical direction. Connect the lower end of the rotating shaft to the generator. A first support arm 4 and a second support arm 5 are fixedly mounted on the first mounting plate 2 and the second mounting plate 3, respectively, extending radially outward along the wind turbine 1. Reinforcing ribs are installed above and below the horizontal end faces of the first support arm 4 and the second support arm 5 to enhance structural strength. The first end of the blade 6 is fastened to the first support arm 4 using fasteners, and the second end is fastened to the second support arm 5 using fasteners. Ensure that the blade 6 is tilted vertically, with a gap between the first end and the second end in the horizontal direction.

[0036] Working principle: Wind energy drives the wind turbine 1 to rotate, which in turn drives the generator to generate electricity. When wind blows over the blades 6, the blades 6 are subjected to wind force, generating a rotational torque that drives the wind turbine 1 to rotate. The rotation of the wind turbine 1 is transmitted to the generator through the shaft, and the generator converts mechanical energy into electrical energy. The electrical energy is then transmitted to the power grid or energy storage equipment through circuits and a control system, realizing the utilization and conversion of wind energy.

[0037] In this invention, the inclined spiral design of the blade 6 effectively improves the wind energy capture efficiency and the stability of the wind turbine 1, reduces stall, and further enhances the performance and service life of the wind power generation device.

[0038] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A wind power generation device, characterized in that, include: The wind turbine (1) has a first mounting plate (2) and a second mounting plate (3) arranged at intervals along the vertical direction, and the interval between the first mounting plate (2) and the second mounting plate (3) is used to install blades (6); Multiple blades (6) are arranged at intervals along the circumference of the wind turbine (1). The blades (6) are inclined in the vertical direction. The first mounting plate (2) is used to detachably connect to the first end of the blade (6) in the length direction. The second mounting plate (3) is used to detachably connect to the second end of the blade (6) in the length direction. There is a gap between the first end and the second end of the blade (6) in the horizontal direction.

2. The wind power generation device according to claim 1, characterized in that, The first end of the blade (6) extends spirally toward the second end.

3. The wind power generation device according to claim 1 or 2, characterized in that, The first mounting plate (2) and the second mounting plate (3) respectively have a first support arm (4) and a second support arm (5) extending radially outward along the wind turbine (1). The first support arm (4) is provided in multiple circumferentially spaced along the first mounting plate (2), and the second support arm (5) is provided in multiple circumferentially spaced along the second mounting plate (3).

4. The wind power generation device according to claim 3, characterized in that, The first support arm (4) and the second support arm (5) are staggered along the circumferential direction of the wind turbine (1).

5. The wind power generation device according to claim 3, characterized in that, The length of the first support arm (4) is equal to the length of the second support arm (5).

6. The wind power generation device according to claim 4, characterized in that, The first support arm (4) and / or the second support arm (5) are provided with reinforcing ribs extending vertically on their horizontal end faces.

7. The wind power generation device according to claim 4, characterized in that, The blade (6) is connected to the first support arm (4) and the second support arm (5) by fasteners.

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