Magnus wind power generation device

Abstract

The invention discloses a Magnus wind power generation device, and relates to the technical field of wind power generation. The defects in the prior art are overcome. The generator set is installed at the bottom of a tower, the center shaft is installed at the top of the tower, the generator set comprises a stator and a rotor connected with the center shaft, and a starting component and a wind power assembly are arranged on the outer wall of the center shaft. The wind power assembly comprises upper and lower groups of wind wheel brackets which are fixedly connected to the circumferential outer wall of the central shaft and are of equilateral triangle structures, and blades fixedly connected to acute angle positions of the upper and lower groups of wind wheel brackets; and the starting part comprises an upper group of rotor brackets and a lower group of rotor brackets which are fixedly connected to the circumferential outer wall of the central shaft and are of equilateral triangle structures, and three rotors. The starting efficiency can be effectively improved, the operation efficiency is high even under the action of atmospheric boundary layer shear wind, and popularization and development of the wind turbine are facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, and in particular to a Magnus wind power generation device. Background Art

[0002] Unlike mainstream horizontal-axis wind turbines, Magnus wind turbines are vertical-axis wind turbines with relatively high structural safety, which solves the problem of yaw against the wind. The Magnus effect force or Magnus (lift) force is that an object (such as a cylinder) rotating in a fluid drives the surrounding fluid to rotate, causing a difference in the fluid speed on both sides of the object, resulting in the rotating object being able to generate a lateral lift. This effect enables Magnus wind turbines to effectively capture wind energy and convert it into electrical energy without the problem of yaw against the wind. Compared with traditional blades, the lift of Magnus blades of Magnus wind turbines is more than ten times that of traditional airfoil blades under the same blade surface area, so it has obvious advantages in power generation efficiency.

[0003] The existing Magnus wind turbine blades are straight cylindrical with equal diameter design, which reduces the working efficiency under the shear wind of the atmospheric boundary layer and is not suitable for the promotion and development of wind turbines. Therefore, we propose a Magnus wind power generation device with high working efficiency. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a Magnus wind power generation device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A Magnus wind power generation device comprises a generator set installed at the bottom of a tower, a central shaft installed at the top of the tower, and a control axis line. The generator set comprises a stator and a rotor connected to the central shaft. The outer wall of the central shaft is provided with a starting component and a wind power assembly. The wind power assembly comprises two groups of upper and lower wind rotor brackets which are fixedly connected to the outer wall of the central shaft and have an equilateral triangle structure, and blades which are fixedly connected to the upper and lower wind rotor brackets at each acute angle position.

[0007] Preferably: the starting component includes two groups of rotor brackets fixedly connected to the outer wall of the central axis and forming an equilateral triangle structure, and three rotors, the upper and lower ends of each rotor are rotatably connected to the acute angle positions of the upper and lower groups of rotor brackets, and the bottom end of the rotor is connected to the output end of the drive motor fixedly connected to the bottom surface of the rotor bracket through a coupling.

[0008] Preferably, each of the blades remains parallel to a side edge of the rotor support.

[0009] Preferably, the distance between the blade and the center of gravity is 3-5 times the distance between the rotor and the center of gravity.

[0010] Preferably, the rotor is a cylinder.

[0011] Preferably: the control axis passes through the center of gravity of the rotor bracket and is parallel to the x-axis; proximity switch SQ1 and proximity switch SQ2 are fixedly installed at both ends of the control axis, proximity switch SQ1 and proximity switch SQ2 are respectively communicated with the control module, and the drive motor is electrically connected to the control module.

[0012] Preferably, the control module is a PLC controller.

[0013] Preferably, the speed of the rotor is controlled by a wind speed sensor and a control module.

[0014] Preferably, the speed of the rotor is controlled by manual regulation.

[0015] The beneficial effects of the present invention are:

[0016] In the present invention, while the starting component revolves around the central axis, the rotors on the starting component also rotate simultaneously under the drive of their own driving motors, and then drive the blades to rotate through the wind wheel bracket. At this time, the starting component is controlled to stop operating, and wind power is subsequently used to work, which can effectively improve the starting efficiency. Even under the action of shear wind in the atmospheric boundary layer, the operating efficiency is still high, which is beneficial to the promotion and development of wind turbines. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the side structure of a wind power component of a Magnus wind power generation device proposed by the present invention;

[0018] Figure 2 A schematic diagram of the top view of the structure of a wind power component of a Magnus wind power generation device proposed by the present invention;

[0019] Figure 3 This is a schematic diagram of a top view of a wind power component of a Magnus wind power generation device proposed by the present invention when in use.

[0020] In the figure: 1 central axis, 2 wind wheel bracket, 3 blades, 4 rotor, 5 rotor bracket. DETAILED DESCRIPTION

[0021] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0022] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] Embodiment 1:

[0024] A Magnus wind power generation device, such as Figure 1 As shown, it includes a generator set installed at the bottom of the tower and a central shaft 1 installed at the top of the tower, wherein the generator set and the tower both refer to the prior art, and the generator set includes a stator and a rotor connected to the central shaft 1, etc., converting mechanical energy into electrical energy to provide power to the power grid, which will not be repeated here;

[0025] Preferably, the central axis 1 is used as the main axis of the wind turbine, which is the same as the prior art and will not be described in detail here;

[0026] The outer wall of the central shaft 1 is provided with a starting component and a wind power component for driving the generator set to generate electricity, wherein the starting component includes a rotor bracket 5 and three rotors 4 which are fixedly connected to the outer wall of the circumference of the central shaft 1 and have two groups of equilateral triangle structures. The upper and lower ends of each rotor 4 are rotatably connected to the acute angle positions of the upper and lower groups of rotor brackets 5. The bottom end of the rotor 4 is connected to the output end of the driving motor fixedly connected to the bottom surface of the rotor bracket 5 through a coupling; the rotation of the rotor 4 is controlled by the driving motor.

[0027] Preferably, the rotor 4 is a cylinder.

[0028] In addition, the wind power assembly includes two groups of wind rotor brackets 2 fixedly connected to the outer wall of the central axis 1 and forming an equilateral triangle structure, and blades 3 fixedly connected to each acute angle position of the two groups of wind rotor brackets 2;

[0029] Preferably, each blade 3 is parallel to the side of the rotor support 5;

[0030] Further preferably, the distance between the blade 3 and the center of gravity is 3-5 times the distance between the rotor 4 and the center of gravity, and preferably 4 times in this embodiment.

[0031] When this embodiment is in use, while the starting component revolves around the central axis 1, the rotors 4 on the starting component also rotate under the drive of their respective driving motors, and then drive the blades 3 to rotate through the wind wheel bracket 2. At this time, the starting component is controlled to stop working, and wind power is subsequently used to work, which can effectively improve the starting efficiency.

[0032] Embodiment 2:

[0033] A Magnus wind power generation device, such as Figure 3 As shown, this embodiment makes the following supplements on the basis of Embodiment 1: it also includes a control axis, which passes through the center of gravity of the rotor bracket 5 and is parallel to the x-axis; proximity switches SQ1 and SQ2 are fixedly installed at both ends of the control axis, respectively, and the proximity switches SQ1 and SQ2 are respectively communicated with the control module, and the drive motor is electrically connected to the control module; during operation, the proximity switches SQ1 and SQ2 transmit signals to the control module so that it controls the rotation direction of the three drive motors.

[0034] Preferably, the control module may be a PLC controller;

[0035] As a supplement, the proximity switch SQ1 and the proximity switch SQ2 can be replaced by a wind speed sensor to autonomously control the rotation speed of the rotor 4 according to the change of wind speed.

[0036] As an alternative, the rotational speed of the rotor 4 can also be manually adjusted.

[0037] When the present embodiment is in use, the starter component revolves around the central axis 1, and the rotors 4 on the starter component also rotate under the drive of their respective drive motors. The proximity switches SQ1 and SQ2 of the present invention are arranged to adjust the direction of the rotors 4, and can realize adaptive speed adjustment and matching according to the actual wind speed. The starter component serves as the initial start of the device, and after starting, it no longer works, drives the blades 3 to rotate, and uses wind power to work, which can further improve the starter efficiency.

[0038] The above description 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 replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A Magnus wind power generation device, comprising a generator set installed at the bottom of a tower, a central shaft (1) installed at the top of the tower, and a control axis, wherein the generator set comprises a stator and a rotor connected to the central shaft (1), characterized in that: The outer wall of the central shaft (1) is provided with a starting component and a wind power assembly, and the wind power assembly comprises two groups of wind wheel brackets (2) in an equilateral triangle structure and fixedly connected to the outer wall of the circumference of the central shaft (1), and blades (3) fixedly connected to each acute angle position of the two groups of wind wheel brackets (2).

2. A Magnus wind power generation device according to claim 1, characterized in that: The starting component comprises two upper and lower groups of rotor brackets (5) fixedly connected to the outer circumferential wall of the central shaft (1) and forming an equilateral triangle structure, and three rotors (4), wherein the upper and lower ends of each rotor (4) are rotatably connected to the acute angle positions of the upper and lower groups of rotor brackets (5), and the bottom end of the rotor (4) is connected to the output end of a driving motor fixedly connected to the bottom surface of the rotor bracket (5) through a coupling.

3. A Magnus wind power generation device according to claim 2, characterized in that: Each blade (3) remains parallel to the side of the rotor support (5).

4. A Magnus wind power generation device according to claim 3, characterized in that: The position of the blade (3) to the center of gravity is 3-5 times the position of the rotor (4) to the center of gravity.

5. A Magnus wind power generation device according to claim 4, characterized in that: The rotor (4) is a cylinder.

6. The Magnus wind power generation device according to claim 1, characterized in that: The control axis passes through the center of gravity of the rotor bracket (5) and is parallel to the x-axis; a proximity switch SQ1 and a proximity switch SQ2 are fixedly installed at both ends of the control axis, and the proximity switch SQ1 and the proximity switch SQ2 are respectively communicated with the control module, and the drive motor is electrically connected to the control module.

7. A Magnus wind power generation device according to claim 6, characterized in that: The control module is a PLC controller.

8. A Magnus wind power generation device according to claim 7, characterized in that: The speed of the rotor (4) is controlled by a wind speed sensor and a control module.

9. The Magnus wind power generation device according to claim 7, characterized in that: The speed of the rotor (4) is controlled by manual regulation.

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