CN217682089U - Vertical shaft magnetic suspension wind power generation device - Google Patents
Vertical shaft magnetic suspension wind power generation device Download PDFInfo
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- CN217682089U CN217682089U CN202221728889.1U CN202221728889U CN217682089U CN 217682089 U CN217682089 U CN 217682089U CN 202221728889 U CN202221728889 U CN 202221728889U CN 217682089 U CN217682089 U CN 217682089U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
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Abstract
The utility model belongs to the technical field of wind power generation, specifically disclose a vertical axis magnetic suspension wind power generation set, fixed axle including vertical setting, install the wind wheel that can rotate on the fixed axle, the wind wheel includes a center section of thick bamboo, the fixed axle passes a center section of thick bamboo, install two permanent magnet end covers on the center section of thick bamboo, two axial repulsion permanent magnets about being equipped with on the fixed axle, two axial repulsion permanent magnets establish the outside at two permanent magnet end covers, two radial magnetic suspension bearings about being equipped with between a center section of thick bamboo and the fixed axle, two radial magnetic suspension bearings are located between two permanent magnet end covers, two rotor magnetic poles about installing in the center section of thick bamboo, be equipped with stator core on the fixed axle, the last stator winding that is equipped with of stator core, stator core is located between two radial magnetic suspension bearings, two rotor magnetic poles are located the both sides of stator core's outer peripheral face. The utility model discloses can realize low wind speed and start, have advantages such as simple structure, energy conversion efficiency are higher.
Description
Technical Field
The utility model relates to a wind power generation technical field, concretely relates to vertical axis magnetic suspension wind power generation set.
Background
The wind power generation device is a mechanical device which converts wind energy into mechanical energy, drives a rotor to rotate and finally outputs electric energy. According to the difference of the direction of the rotating axis of the wind wheel, the wind power generation device is divided into a horizontal axis type and a vertical axis type. Compared with a horizontal-axis wind power generation device, the vertical-axis wind power generation device has the advantages of high efficiency, small size and the like, so that the vertical-axis wind power generation device becomes the first choice of small and medium-sized wind power generation equipment.
The existing vertical axis wind power generation device is formed by connecting a wind wheel, a transmission shaft, a speed changer and a generator in series. The vertical axis wind power generation device with the structure has the characteristics of large volume, complex structure, more transmission links and the like, cannot be moved and carried, has higher requirements on a placement environment, and has higher maintenance complexity and energy loss, and the defects limit the working environment and the power generation efficiency of the vertical axis wind power generation device and influence the popularization and application of the vertical axis wind power generation device.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a vertical axis magnetic suspension wind power generation set to above problem to reduce the transmission link, reduce energy loss.
In order to achieve the above object, the utility model discloses a vertical axis magnetic suspension wind power generation set, including the fixed axle of vertical setting, install the wind wheel that can rotate on the fixed axle, its structural feature is: the wind wheel comprises a center barrel, a fixed shaft penetrates through the center barrel, an upper permanent magnet end cover and a lower permanent magnet end cover are installed on the center barrel, a dodging hole for the fixed shaft to penetrate through is formed in each permanent magnet end cover, an upper axial repulsion permanent magnet and a lower axial repulsion permanent magnet are arranged on the fixed shaft and are arranged on the outer sides of the two permanent magnet end covers, an upper radial magnetic suspension bearing and a lower radial magnetic suspension bearing are arranged between the center barrel and the fixed shaft and are located between the two permanent magnet end covers, a left rotor magnetic pole and a right rotor magnetic pole are installed in the center barrel, a stator core is arranged on the fixed shaft and is provided with a stator winding, the stator core is located between the two radial magnetic suspension bearings, and the two rotor magnetic poles are located on two sides of the outer peripheral face of the stator core. After the structure is adopted, the central cylinder is equivalent to a rotor of the power generation device, the fixed shaft is equivalent to a stator of the power generation device, and the rotor is a part of the wind wheel, so that the transmission link can be reduced; the permanent magnet end cover and the axial repulsion permanent magnet interact to provide axial suspension acting force of the central cylinder, the radial magnetic suspension bearing provides radial suspension acting force of the central cylinder, and the rotor of the power generation device is not in contact with the stator, so that friction can be reduced, and energy loss can be reduced.
Furthermore, the radial magnetic suspension bearing comprises an inner ring and an outer ring which are mutually repellent, and the inner ring and the outer ring are respectively and fixedly connected with the fixed shaft and the central cylinder. The inner ring and the outer ring of the radial magnetic suspension bearing are mutually exclusive and used for providing acting force for radially suspending the central cylinder.
Furthermore, a plurality of radial protection bearings are installed in the central cylinder, and the fixing shaft penetrates through inner holes of the radial protection bearings. The radial protection bearing is used for preventing the rotor of the power generation device from contacting with the stator, and plays a role in protection.
Furthermore, the gap between the radial protection bearing and the fixed shaft is smaller than the gap between the inner ring and the outer ring of the radial magnetic suspension bearing, so that the inner ring and the outer ring of the radial magnetic suspension bearing are prevented from contacting, and the radial magnetic suspension bearing is protected.
Preferably, the number of the radial protection bearings is two, two radial protection bearings are positioned on the inner sides of the two permanent magnet end covers, and two radial magnetic suspension bearings are positioned on the inner sides of the two radial protection bearings.
Further, the wind wheel includes a plurality of blades disposed around and secured to the central cylinder.
Preferably, the blades include lift type blades and drag type blades. The resistance type blade can realize the self-starting of the wind wheel at low wind speed, and the energy conversion efficiency of the lift type blade is higher.
Preferably, the lift type blades and the drag type blades are the same in number and are arranged correspondingly, and the drag type blades are located between the lift type blades and the central cylinder.
Preferably, the number of the lift type blades and the number of the resistance type blades are both odd, the thrust of the lift type blades is always larger than the resistance, and the change of the wind direction has no obvious influence on the rotating direction of the wind wheel and the thrust stability of the blades.
Furthermore, a cover shell with a downward opening is arranged on the permanent magnet end cover positioned above the central cylinder, and the upper end part of the central cylinder extends into the cover shell to prevent rainwater from flowing into the central cylinder.
To sum up, the beneficial effects of the utility model reside in that: the rotor of the power generation device is integrated with the wind wheel, no transmission structure is adopted, the equipment structure is simple, and the maintenance is easy; the rotor adopts a magnetic suspension structure, and the rotor and the stator have no contact friction, so that the friction resistance, energy loss and speed loss of a wind wheel are reduced, the power generation device can realize low-wind-speed starting, and the energy conversion efficiency is higher; due to the combined application of the resistance and lift force type blades, the power generation device has higher power generation efficiency while realizing low-wind-speed self-starting, and the influence of wind direction and wind speed changes on the operation of the power generation device is reduced.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1 in a top view;
in the figure: 1. the wind wheel structure comprises a fixed shaft, 2, a wind wheel, 201, a central cylinder, 202, a lifting force type blade, 203, a resistance type blade, 4, a permanent magnet end cover, 5, an avoidance hole, 6, an axial repulsion permanent magnet, 7, a radial magnetic suspension bearing, 8, a rotor magnetic pole, 9, a stator iron core, 10, a radial protection bearing, 13 and a housing.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
Referring to fig. 1 and 2, the vertical axis magnetic levitation wind power generation device of the present invention includes a vertically disposed fixing shaft 1, and a wind wheel 2 capable of rotating is mounted on the fixing shaft 1.
Referring to fig. 1, the wind wheel 2 includes a central cylinder 201, 3 lift type blades 202 and 3 drag type blades 203 are arranged around the central cylinder 201, the lift type blades 202 are connected to the central cylinder 201 through upper and lower support rods, the drag type blades 203 are in one-to-one correspondence with the lift type blades 202, the drag type blades 203 are arranged between the lift type blades 202 and the central cylinder 201 corresponding thereto, and the upper and lower portions of the drag type blades 203 are respectively fixedly connected to the two support rods.
In other embodiments of the present invention, the lift blades 202 and the drag blades 203 may be selected from other numbers, wherein an odd number is preferred.
In other embodiments of the present invention, other connection manners may also be adopted between the lift type blades 202 and the central tube 201, and between the resistance type blades 203 and the central tube 201, for example, one bracket is used to connect all the lift type blades 202, the resistance type blades 203 and the central tube 201 together.
Referring to fig. 2, the utility model provides a lift type blade 202 is the blade of cross-sectional shape like the wing, its both sides are asymmetric arc, utilize bernoulli's effect, make the blade when the windward, rely on the wind speed difference formation pressure differential of its both sides to produce the lift, and utilize the blade angle of attack to deflect the partly of lift for drive power, can slow down the rotational speed under the high wind speed behind the blade of this type of wind wheel 2 use, mechanical strength requirement to blade fixed frame is little, simultaneously, because the lift that wind-force produced the blade under the high wind speed is greater than the resistance, consequently, lift blade possesses higher drive efficiency under the high wind speed.
Referring to fig. 2, the utility model provides a resistance type blade 203 is wind cup type structure, and its cross section does, the arc, and the windward resistance that its concave surface produced is stronger than the convex surface to realize directional rotation, resistance type blade 203's simple structure, easily processing can produce great torsion under low wind speed, can make wind power generation set quick start.
Referring to fig. 1, the utility model provides a fixed axle 1 passes a center section of thick bamboo 201, installs two upper and lower permanent magnetism end covers 4 on the center section of thick bamboo 201, is equipped with the hole of dodging 5 that supplies fixed axle 1 to pass on the permanent magnetism end cover 4, is equipped with two upper and lower axial repulsion permanent magnet 6 on the fixed axle 1, and two axial repulsion permanent magnet 6 establish in the outside of two permanent magnetism end covers 4, is equipped with two upper and lower radial magnetic suspension bearings 7 between a center section of thick bamboo 201 and the fixed axle 1, and two radial magnetic suspension bearings 7 are located between two permanent magnetism end covers 4.
The permanent magnet end cover 4 and the axial repulsion permanent magnet 6 jointly form an axial magnetic bearing, and the permanent magnet end cover 4 and the axial repulsion permanent magnet 6 have an axial repulsion acting force, so that the central cylinder 201 can keep axial suspension. The radial magnetic suspension bearing 7 comprises an inner ring and an outer ring, wherein the inner ring and the outer ring of the inner ring and the outer ring are repulsive permanent magnets, and the inner ring and the outer ring have repulsive force in the radial direction, so that the central cylinder 201 can keep radial suspension.
In order to protect the radial magnetic suspension bearings 7, a plurality of radial protection bearings 10 are installed in the central cylinder 201, and the fixed shaft 1 penetrates through inner holes of the radial protection bearings 10. The clearance between the radial protection bearing 10 and the fixed shaft 1 is smaller than the clearance between the inner ring and the outer ring of the radial magnetic suspension bearing 7.
Preferably, the number of the radial protection bearings 10 is two, two radial protection bearings 10 are positioned inside the two permanent magnet end covers 4, and two radial magnetic suspension bearings 7 are positioned inside the two radial protection bearings 10.
Referring to fig. 1, a left rotor magnetic pole and a right rotor magnetic pole 8 are installed in a central cylinder 201, a stator core 9 is arranged on a fixed shaft 1, a stator winding is arranged on the stator core 9, the stator core 9 is located between two radial magnetic suspension bearings 7, and the two rotor magnetic poles 8 are located on two sides of the outer peripheral surface of the stator core 9. When the central cylinder 201 rotates relative to the stationary shaft 1, the stator winding cuts the magnetic lines of force generated by the two rotor poles 8 to generate current, converting mechanical energy into electrical energy.
Referring to fig. 1, in a further improvement of the present invention, a casing 13 with a downward opening is installed on the upper permanent magnet end cover 4, the upper end of the central cylinder 201 extends into the casing 13, and the casing 13 is used for preventing rainwater from entering the central cylinder 201.
The working principle of the utility model is as follows: the central cylinder 201, the lift type blades 202, the resistance type blades 203 and the support rods jointly form a wind wheel structure. The permanent magnet end cover 4 interacts with the axial repulsion permanent magnet 6, and the inner ring and the outer ring of the radial magnetic suspension bearing 7 interact to keep the central cylinder 201 suspended. When the wind turbine rotates at a low speed, the thrust generated by the wind turbine blades is greater than the lift force, and the resistance type blades 203 can be used as a power source for starting the power generation device; when the wind wheel rotates at a high speed, the lift force generated by the wind wheel blades is larger than the thrust force, the lift force type blades 202 can be used as a main power source for the work of the power generation device, and meanwhile, the resistance type blades 203 can supplement power, so that the power generation efficiency of the device is improved. The two types of blades of the wind wheel part are both odd number, so that the thrust of the lift type blade 202 can be ensured to be always larger than the resistance, and the change of the wind direction has no obvious influence on the rotating direction of the wind wheel and the thrust stability of the blades.
The rotor and the wind wheel of the utility model are integrated, without transmission structures such as connecting rods and transmissions, the equipment structure is simple, and the maintenance and the repair are easy, therefore, the utility model can be made into a portable small power generation device besides being used as large-scale wind power generation equipment, and can be used as an outdoor temporary power supply; the utility model adopts the axial and radial magnetic suspension technology, and the rotor of the generating set has no contact friction with the stator and the base, so that the friction resistance, the energy loss and the speed loss of the wind wheel can be reduced, the generating set can realize the starting and the operation at low wind speed, and the energy conversion efficiency is higher; the utility model discloses because the combined application of resistance and lift type blade, overcome the defect of resistance type blade energy conversion inefficiency and the low wind speed self-starting difficulty of lift type blade, when realizing low wind speed self-starting, make equipment possess higher generating efficiency, reduced the influence that wind direction and wind speed change caused the power generation facility operation.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a vertical axis magnetic suspension wind power generation set, including vertical fixed axle (1) that sets up, install wind wheel (2) that can rotate on fixed axle (1), a serial communication port, wind wheel (2) are including a center section of thick bamboo (201), fixed axle (1) passes a center section of thick bamboo (201), install two upper and lower permanent magnet end covers (4) on a center section of thick bamboo (201), be equipped with on permanent magnet end cover (4) and supply fixed axle (1) to pass dodge hole (5), be equipped with two axial repulsion permanent magnet (6) from top to bottom on fixed axle (1), establish in the outside of two permanent magnet end covers (4) two axial repulsion permanent magnet (6), be equipped with two radial magnetic suspension bearing (7) from top to bottom between a center section of thick bamboo (201) and fixed axle (1), two radial magnetic suspension bearing (7) are located between two permanent magnet end covers (4), install two rotor magnetic pole (8) about in a center section of thick bamboo (201), be equipped with stator core (9) on fixed axle (1), be equipped with stator winding on stator core (9), stator core (9) are located between two radial magnetic suspension bearing (7), two rotor magnetic pole (8) the both sides of stator core (9).
2. The vertical axis magnetic levitation wind power generation device as claimed in claim 1, wherein the radial magnetic levitation bearing (7) comprises an inner ring and an outer ring which are mutually repellent and fixedly connected with the fixed shaft (1) and the central cylinder (201), respectively.
3. Vertical axis magnetic levitation wind power plant as claimed in claim 2, characterized in that inside the central cylinder (201) several radial protection bearings (10) are installed, the stationary shaft (1) passing through the inner bores of the radial protection bearings (10).
4. Vertical axis magnetic levitation wind power plant according to claim 3, characterized in that the clearance between the radial protection bearing (10) and the stationary shaft (1) is smaller than the clearance between the inner and outer rings of the radial magnetic levitation bearing (7).
5. Vertical axis magnetic levitation wind power plant according to claim 3, characterized in that the number of radial protection bearings (10) is two, two radial protection bearings (10) are located inside two permanent magnet end caps (4) and two radial magnetic levitation bearings (7) are located inside two radial protection bearings (10).
6. Vertical axis magnetic levitation wind power plant according to claim 1, characterized in that the wind rotor (2) comprises several blades arranged around the central cylinder (201) and fixed thereto.
7. The vertical axis magnetic levitation wind power generation device as recited in claim 6, wherein the blades comprise a lift type blade (202) and a drag type blade (203).
8. The vertical axis magnetic levitation wind power generation device as recited in claim 7, wherein the lift type blades (202) and the drag type blades (203) are the same in number and are arranged correspondingly, and the drag type blades (203) are located between the lift type blades (202) and the central cylinder (201).
9. Vertical axis magnetic levitation wind power plant as claimed in claim 8, characterized in that the number of lift type blades (202) and drag type blades (203) is odd.
10. Vertical axis magnetic levitation wind power plant as claimed in any of claims 1 to 9, characterised in that a downwardly open enclosure (13) is mounted on the upper permanent magnet end cover (4), the upper end of the central cylinder (201) extending into the enclosure (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221728889.1U CN217682089U (en) | 2022-07-07 | 2022-07-07 | Vertical shaft magnetic suspension wind power generation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221728889.1U CN217682089U (en) | 2022-07-07 | 2022-07-07 | Vertical shaft magnetic suspension wind power generation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217682089U true CN217682089U (en) | 2022-10-28 |
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ID=83716482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221728889.1U Active CN217682089U (en) | 2022-07-07 | 2022-07-07 | Vertical shaft magnetic suspension wind power generation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217682089U (en) |
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2022
- 2022-07-07 CN CN202221728889.1U patent/CN217682089U/en active Active
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