Flow guide type vertical shaft magnetic suspension wind power generation device

Abstract

The utility model discloses a flow guide type vertical shaft magnetic suspension wind power generation device, which belongs to the field of power equipment and comprises a mounting main body and a rotating part arranged on the mounting main body, the driving part is driven by wind power to drive the rotating part to rotate; the transmission part transmits kinetic energy generated by rotation of the rotating part to the power generator part and converts the kinetic energy into electric energy; and the static air collecting part is used for collecting and accelerating natural air and then guiding the natural air to the driving part. The utility model solves the problem of low power generation efficiency caused by the influence of natural wind resistance in the existing resistance type vertical axis wind driven generator, and adopts an efficient double-turbine structure, a magnetism gathering type permanent magnet suspension bearing and lubrication-free alloy rolling bearing shaft system technology, an efficient blade profile design and a reasonable blade layout scheme. Efficient utilization of wind energy resources is achieved, the input power of wind energy is increased, and the power generation efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of power equipment technology, and specifically relates to a flow-guiding vertical axis magnetic levitation wind power generation device. Background Technology

[0002] As one of the main alternative energy technologies for improving the energy structure, addressing climate change and energy security issues, wind power has gradually become an important part of the sustainable development strategy and is developing very rapidly.

[0003] Wind turbines are mainly classified into two categories: horizontal axis and vertical axis. Currently, the market is dominated by three-bladed horizontal axis wind turbines. Horizontal axis wind turbines require a starting wind speed of 4-5 m / s, with a maximum of 5.9 m / s to start. The wind direction is limited to within 30 degrees. Due to their small intake angle, they cannot easily change direction and are suitable for installation in areas with average annual wind speeds ≥ 5 m / s. The main challenge of three-bladed horizontal axis wind turbines is their high wind loss and low wind energy utilization rate.

[0004] Vertical axis wind turbines start in winds of 1.5-2 m / s with no wind direction restrictions, making them suitable for installation in areas with an average annual wind speed of ≥3 m / s. They expand the scope of wind energy utilization by considering both wind speed and direction, fully utilizing wind energy resources and significantly improving the stability and efficiency of wind power generation. Under the same wind speed and power output, they can multiply the power generation of wind turbines, achieving twice the average annual power generation of horizontal axis three-blade wind turbines.

[0005] Vertical axis wind turbines, as a novel wind power solution, will promote the development and utilization of wind energy on a wider scale due to their ability to effectively reduce overall wind power costs. Suitable for wind farms of various sizes, they can be installed in homes, small businesses, schools, and other locations to provide independent power supplies and reduce reliance on the traditional power grid. They can also be installed in remote areas, islands, and other places with limited power supply. Furthermore, they can provide power to communication base stations, ensuring the normal operation of communication equipment. In addition, with the development of new energy vehicles, they can be installed on highways to provide charging power for these vehicles at service areas. With the continuous advancement of wind power generation technology, vertical axis wind turbines have an even broader development prospect.

[0006] Wind energy is characterized by its poor stability, but it boasts vast and inexhaustible reserves and low clean-up operating costs. Domestically, there are still idle wind power areas with average annual wind speeds ≤5m / s, representing a huge market for installing micro-wind power generation equipment. Currently, the micro-wind power generation market offers two types of vertical axis wind turbines: lift-type and drag-type. Both types utilize natural wind blowing directly onto the rotor to generate electricity, and both are affected by the reverse drag of the natural wind, reducing wind energy utilization and power generation efficiency. Utility Model Content

[0007] The main purpose of this invention is to provide a flow-guided vertical axis magnetic levitation wind power generation device to solve the problem of reduced power generation efficiency of existing drag-type vertical axis wind turbines due to the influence of natural wind resistance.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a flow-guiding type vertical axis magnetic levitation wind power generation device, comprising:

[0009] Installation main body;

[0010] A rotating part, which is rotatably mounted on the mounting body;

[0011] A drive unit is fixedly connected to the rotating part, and the drive unit is used to drive the rotating part to rotate by wind power;

[0012] A transmission unit is connected to the rotating part and a generator unit is connected to the transmission unit. The transmission unit is used to transmit the kinetic energy generated by the rotation of the rotating part to the generator unit and convert it into electrical energy.

[0013] A static air collection unit is fixedly connected to the mounting body and is used to concentrate and accelerate the natural wind and guide it to the drive unit.

[0014] In one possible implementation, the static air collection unit includes a plurality of static blades, which are arranged and connected to the mounting body.

[0015] In one possible implementation, the mounting body has accommodating chambers at both ends, and the rotating part includes a spindle assembly with both ends of the spindle assembly mounted in the accommodating chambers.

[0016] In one possible implementation, bearing components are respectively fitted at both ends of the spindle assembly, and the bearing components are respectively installed in the accommodating chamber.

[0017] In one possible implementation, the bearing component comprises a radial alloy rolling bearing.

[0018] In one possible implementation, a permanent magnet levitation bearing is fitted at the bottom end of the spindle assembly, and the permanent magnet levitation bearing is located in the accommodating cavity below the mounting body.

[0019] In one possible implementation, a spacer is provided between the permanent magnet levitation bearing and the bearing member adjacent to it.

[0020] In one possible implementation, the drive unit includes a plurality of moving blades, which are arranged and connected to the rotating unit.

[0021] In one possible implementation, the rotating part is provided with a plurality of moving blade connecting plates corresponding to the moving blades, and the moving blades are mounted on the moving blade connecting plates.

[0022] In one possible implementation, the transmission unit includes a gear transmission system, the generator unit has a rotor, and the output end of the gear transmission system is connected to the rotor.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] This utility model discloses a flow-guided vertical axis magnetic levitation wind power generation device, which is a drag-type vertical axis wind turbine. It adopts a high-efficiency dual-turbine structure, a magnetic permanent magnet levitation bearing and a lubricated alloy rolling bearing shaft system, as well as a high-efficiency blade design and a reasonable blade layout scheme. This achieves efficient utilization of wind energy resources, increases the input power of wind energy, and improves power generation efficiency. At the same time, it also has the advantages of low starting wind speed, low noise, high wind energy utilization rate, safety and no radiation, no need for wind counter, convenient transportation and installation, simple structure and easy maintenance, and low operation, maintenance and repair costs. It can be applied to wind power generation areas with light winds and above. Attached Figure Description

[0025] Figure 1 This is a cross-sectional structural schematic diagram of a flow-guiding vertical axis magnetic levitation wind power generation device according to the present invention;

[0026] Figure 2 This is a bottom view of the structure of a flow-guiding vertical axis magnetic levitation wind power generation device according to this utility model;

[0027] Figure 3 This is a schematic diagram of the installation body and static wind collection part of a flow-guiding vertical axis magnetic levitation wind power generation device according to this utility model;

[0028] Figure 4 This is a schematic diagram of the drive unit, rotating unit, and transmission unit of a flow-guiding vertical axis magnetic levitation wind power generation device according to this utility model.

[0029] Figure 5 This is a schematic diagram of the rotating part of a flow-guiding vertical axis magnetic levitation wind power generation device according to this utility model.

[0030] In the diagram: 1. Upper bearing cover; 2. Upper alloy rolling bearing; 3. Upper shaft head; 4. Upper bearing housing; 5. Main shaft body; 6. Moving blade connecting plate; 7. Moving blade; 8. Stationary blade; 9. Lower shaft head; 10. Lower bearing cover; 11. Lower alloy rolling bearing; 12. Spacer; 13. Permanent magnet levitation bearing; 14. Lower bearing housing; 15. Gear cover; 16. Pinion; 17. Large gear. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0032] In the description of the embodiments of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the embodiments of this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0033] See Figure 1 and Figure 2 This utility model provides a flow-guiding vertical axis magnetic levitation wind power generation device, comprising:

[0034] Installation main body;

[0035] The rotating part is rotatably mounted on the mounting body.

[0036] The drive unit is fixedly connected to the rotating unit, and the drive unit drives the rotating unit to rotate by wind power.

[0037] The transmission unit is connected to the rotating part and is connected to the generator unit. The transmission unit transmits the kinetic energy generated by the rotation of the rotating part due to wind energy to the generator unit, which then converts it into electrical energy.

[0038] The static air collection unit is fixedly connected to the installation body and is used to concentrate and accelerate the natural wind to the drive unit.

[0039] This application uses an installation body to fix the flow-guiding vertical axis magnetic levitation wind power generation device of this embodiment on the foundation, ensuring that the entire device will not shake or even tip over during wind power generation. The static wind collection part concentrates and accelerates the natural wind of any wind direction and blows it to the drive part. The installation body and the static wind collection part are fixed in place. After being driven by the wind, the drive part drives the rotating part to rotate, which in turn drives the transmission part to transmit the kinetic energy converted from wind energy to the generator part, ultimately realizing the conversion of wind energy into electrical energy.

[0040] See Figure 1 and Figure 3 Specifically, the mounting body of this embodiment includes an upper bearing cover 1, an upper bearing seat 4, a lower bearing cover 10, and a lower bearing seat 14. The upper bearing cover 1 and the upper bearing seat 4 form an upper receiving chamber, and the lower bearing cover 10 and the lower bearing seat 14 form a lower receiving chamber. The upper and lower receiving chambers are used to mount the two ends of the rotating part, ensuring that the rotating part rotates along its axial direction without radial displacement, which could damage the equipment. For example, the upper bearing cover 1 and the upper bearing seat 4 can be connected as a single unit by screws, and the lower bearing cover 10 and the lower bearing seat 14 can also be connected as a single unit by screws. To maximize weight reduction while meeting operational requirements, the upper bearing seat 4 and the lower bearing seat 14 can be configured as welded components.

[0041] Furthermore, mounting holes can be provided on the lower bearing housing 14 to fix the generator unit (not shown) in the mounting hole position.

[0042] See Figure 1 and Figure 2 In this embodiment, the static air collection unit includes multiple stationary blades 8, which are arranged and connected to the upper bearing seat 4 and the lower bearing seat 14. Preferably, the stationary blades 8 in this embodiment are arc-shaped, and there are six stationary blades 8 in total. The six stationary blades 8 are arranged vertically and at equal intervals, and the upper and lower ends of each stationary blade 8 are respectively welded to the upper bearing seat 4 and the lower bearing seat 14.

[0043] In this embodiment, the mounting body and the stationary blades 8 together form an external turbine guide structure, which can concentrate and accelerate natural wind without wind direction restrictions, thereby increasing the wind speed reaching the rotating part. This allows the wind power generation device of this embodiment to be started even when the external wind force is small, increasing the input power of wind energy and improving the power generation efficiency.

[0044] See Figure 2 , Figure 4 and Figure 5The rotating part of this embodiment includes a spindle assembly, with both ends of the spindle assembly mounted in the upper and lower accommodating cavities of the mounting body. Specifically, the spindle assembly includes an upper spindle head 3, a spindle body 5, and a lower spindle head 9 connected in sequence. The axial directions of the upper spindle head 3, the spindle body 5, and the lower spindle head 9 are aligned on the same straight line, ensuring that the spindle body rotates along its axis without radial offset. Exemplarily, the upper spindle head 3, the spindle body 5, and the lower spindle head 9 are connected by welding. An upper alloy rolling bearing 2 is sleeved on the upper spindle head 3 and installed in the upper accommodating cavity. A lower alloy rolling bearing 11 is sleeved on the lower spindle head 9 and installed in the lower accommodating cavity. In this embodiment, the alloy rolling bearing is a radial alloy rolling bearing, which has the characteristics of high temperature resistance, wear resistance, dry friction, and no lubrication required, and can be used for a long time without maintenance or replacement. Through the cooperation between the rolling bearing and the bearing seat structure, the spindle assembly is constrained to rotate along its axis.

[0045] Further, see Figure 3 and Figure 5 A permanent magnet levitation bearing 13 is also fitted onto the lower shaft head 9, and a permanent magnet levitation bearing 12 is also installed in the lower accommodating cavity. The permanent magnet levitation bearing 13 is located below the lower alloy rolling bearing 11, and the permanent magnet levitation bearing 12 and the lower alloy rolling bearing 11 are isolated by a spacer 12. Preferably, the permanent magnet levitation bearing 12 in this embodiment is a magnetizing permanent magnet levitation bearing.

[0046] See Figure 5 In this embodiment, the rotating part adopts a magnetic permanent magnet levitation bearing and a lubricated alloy rolling bearing shaft system. It is a suspended transmission shaft system supported by two alloy rolling bearings and one permanent magnet levitation bearing, which can greatly eliminate the influence of gravity and working load on the shaft system assembly, extend the service life of the transmission shaft system assembly, and improve transmission efficiency. Specifically, the upper alloy rolling bearing 2 and the lower alloy sliding bearing 11 are used to withstand the radial force generated by the transient wind force alternating load of the moving blade 7. The permanent magnet levitation bearing 13 and the lower alloy fixed bearing 11 are isolated from each other and do not contact each other through the spacer 12. The permanent magnet levitation bearing 13 can realize contactless power transmission of the transmission shaft system assembly and eliminate the instability of suspension.

[0047] See Figure 2 Furthermore, the drive unit includes multiple moving blades 7, which are arranged and connected to the main shaft 5. The outer stationary blades 8 and the inner moving blades 7 do not contact each other. For example, the main shaft 5 is provided with multiple moving blade connecting plates 6 corresponding to the moving blades 7. The moving blade connecting plates 6 are installed on the main shaft 5 by screws, and the moving blades 7 and the moving blade connecting plates 6 are welded together, thereby ensuring a stable connection between the above components. The moving blades 7 can drive the main shaft assembly to rotate synchronously.

[0048] See Figure 4In this embodiment, the transmission unit is a gear transmission system, and the generator unit has a rotor. The output end of the gear transmission system is connected to the generator rotor. When the rotating unit rotates under wind power, the rotational kinetic energy is transmitted through the gear transmission system. The output end of the gear transmission system drives the rotor of the generator unit to rotate, and the kinetic energy is converted into electrical energy through the relative rotation between the generator rotor and the stator.

[0049] For example, the gear transmission system of this embodiment includes a large gear 17 and a small gear 16 that mesh with each other. The large gear 17 is connected to the lower shaft head 9 by a nut and a key. The rotational speed of the large gear 17 is consistent with that of the lower shaft head 9. The rotational speed of the small gear 16 depends on the gear ratio between the large gear 17 and the small gear 16. The small gear 16 outputs power to drive the generator unit through a key connection.

[0050] The drive unit, rotating unit, and transmission unit of this embodiment together form an internal wind turbine structure, which can greatly reduce the loss of wind energy due to wind resistance, thereby maximizing the utilization of wind energy.

[0051] During normal operation, the natural wind, which is not restricted by wind direction, enters the outer turbine guide structure through the opening direction of the stationary blade 8. The natural wind is concentrated and accelerated, and the wind speed is significantly increased. Then it blows towards the working surface of the moving blade 7 in the inner wind turbine structure. Under the action of efficient wind power, the moving blade 7 drives the main shaft 5 to rotate, thereby driving the large gear 17 and the small gear 16 to output power to drive the generator to generate electricity.

[0052] This embodiment of the invention employs a highly efficient external turbine-wind collector to concentrate and accelerate natural wind without wind direction restrictions, significantly increasing the wind speed at the moving blades. This allows for more efficient use of wind energy resources and improves wind energy utilization. The highly efficient internal turbine-driven rotor structure greatly reduces wind resistance and energy loss, maximizing wind energy utilization. This flow-guided vertical axis magnetic levitation wind turbine can be widely installed in various wind zones, including plateaus, low-wind-speed areas, and steep mountains. It can be applied to wind-solar hybrid streetlights, landscape lighting, lighthouses, off-grid power generation systems, etc., enabling the development and utilization of wind energy across a wider range of micro-wind power generation applications.

[0053] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.

[0054] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this application.

Claims

1. A flow-guided vertical axis magnetic levitation wind power generation device, characterized by, The utility model relates to a wind turbine, comprising: a mounting body having two ends with accommodating chambers; a rotating part rotatably mounted on the mounting body, the rotating part comprising a main shaft assembly having two ends mounted on the accommodating chambers, each end of the main shaft assembly being sleeved with a bearing, each bearing being correspondingly mounted on the accommodating chamber, the bearing comprising a radial alloy rolling bearing, the bottom end of the main shaft assembly being sleeved with a permanent magnetic suspension bearing, the permanent magnetic suspension bearing being located in the accommodating chamber below the mounting body; a driving part fixedly connected to the rotating part, the driving part being used to drive the rotating part to rotate by wind power; a transmission part connected to the rotating part, the transmission part being connected with a generator part, the transmission part being used to transmit kinetic energy generated by the rotation of the rotating part to the generator part to be converted into electric energy; a static wind collecting part fixedly connected to the mounting body, the static wind collecting part being used to collect and accelerate natural wind and then guide the wind to the driving part.

2. The wind power plant according to claim 1, characterized in that The static wind collecting part comprises a plurality of static vanes arranged and connected to the mounting body.

3. The wind power plant according to claim 1, characterized in that A spacer sleeve is arranged between the permanent magnetic suspension bearing and the bearing close to the permanent magnetic suspension bearing.

4. The wind power plant according to claim 1, characterized in that The driving part comprises a plurality of dynamic vanes arranged and connected to the rotating part.

5. The wind power plant according to claim 4, characterized in that The rotating part is provided with a plurality of dynamic vane connecting plates corresponding to the dynamic vanes, the dynamic vanes being mounted on the dynamic vane connecting plates.

6. The wind power plant according to claim 1, characterized in that The transmission part comprises a gear transmission system, the generator part having a rotor, the output end of the gear transmission system being connected to the rotor.

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