CN101787961B - Small magnetic suspension horizontal shaft wind power generator - Google Patents
Small magnetic suspension horizontal shaft wind power generator Download PDFInfo
- Publication number
- CN101787961B CN101787961B CN2010101195634A CN201010119563A CN101787961B CN 101787961 B CN101787961 B CN 101787961B CN 2010101195634 A CN2010101195634 A CN 2010101195634A CN 201010119563 A CN201010119563 A CN 201010119563A CN 101787961 B CN101787961 B CN 101787961B
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- Prior art keywords
- magnetic
- ring component
- bearing
- permanent
- wind power
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/0408—Passive magnetic bearings
- F16C32/0423—Passive magnetic bearings with permanent magnets on both parts repelling each other
- F16C32/0425—Passive magnetic bearings with permanent magnets on both parts repelling each other for radial load mainly
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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
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wind Motors (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention relates to a small magnetic suspension horizontal shaft wind power generator which comprises a rotating shaft, a stator and a rotor, wherein one end of the rotating shaft (2) is supported by adopting a rolling bearing (13), and the other end is supported by adopting a permanent magnet bearing and provided with a paddle; and the stator and the rotor are distributed between the permanent magnet bearing and the rolling bearing. A magnetic suspension support technology is applied to the traditional small wind power generator, and therefore, the invention has the advantages of small start resisting moment, simple structure, low cost, low-wind speed start, easy assembly, and the like.
Description
Technical field
The present invention relates to small-sized wind power generator and magnetic suspension bearing technology, especially relate to a kind of small magnetic suspension horizontal shaft wind power generator that can develop the low wind speed resource of domestic wide geographic area.
Background technique
The small-sized wind power generator equipment cost is low; Pollution-free; Energy consumption is low; Structure is versatile and flexible, install and use and safeguard very easy, so small-sized wind power generator is particularly suitable for solving the electrical problem of the vast remote pastoral area that can't set up power transmission line, mountain area, island, frontier sentry, meteorological station, the transfer station, street lamp, lawn light, park, villa etc.Yet conventional small wind-driven generator resistance of start square is big, and starting wind velocity is more than 3.5m/s, and the generating wind speed must reach 4.2m/s.Statistics and calculating by China Meteorological Administration; China's wind energy rich region accounts for 8% of national area; Wind energy accounts for 18% of national area than rich region; Wind energy district capable of using accounts for 50% of national area, and wherein wind energy district capable of using wind speed is 2000-4000 greater than the year accumulative total hour number of 3m/s, and the conventional small wind-driven generator can't effectively develop the low wind speed resource of domestic wide geographic area.
One of major reason that the China of restriction at present small-sized wind power generator is generally applied is exactly that traditional wind resistance of start square is big.The factor that influences small-sized wind power generator starting resistance square has: power generator rotor magnetic pole is to the resisting moment of the magnetic pull generation of stator; The concentricity of generator, air gap whether evenly, the elasticity of mechanical bearing, and the mechanical bearing at support generator rotating shaft two ends is because the surface friction drag that discontinuity causes is big etc.
Therefore, reduce the resistance of start square of horizontal axis small-sized wind power generator, reducing its starting wind velocity is the problem that China's large-scale promotion application small-sized wind power generator presses for solution.
Summary of the invention
Technical problem to be solved by this invention is: a kind of small magnetic suspension horizontal shaft wind power generator is provided, and this wind-driven generator resistance of start square is little, can hang down the wind speed starting.
The technological scheme that the present invention solves its technical problem employing is: comprise rotating shaft, stator and rotor.One end of said rotating shaft adopts the rolling bearing supporting, and the other end adopts the Permanent-magnet bearing supporting, and this end is installed blade.Said stator and rotor arrangements are between Permanent-magnet bearing and rolling bearing.
The present invention is mainly used in that to solve conventional small wind-driven generator resistance of start square big, causes its starting wind velocity generally more than 3.5m/s, can't effectively develop the low wind speed problem of resource of domestic wide geographic area.To the deficiency and the defective of conventional small wind-driven generator, the present invention is applied to the magnetic suspension bearing technology in the conventional small wind-driven generator, therefore has following major advantage:
1. low wind speed starting: adopt Permanent-magnet bearing supporting and rolling bearing mixing bearing, can effectively reduce resistance of start square, reduce horizontal axis small-sized wind power generator starting wind velocity, can satisfy the processing and the matching requirements of Permanent-magnet bearing again;
2. easy to operate: as to move magnetic ring component and decide the axial dipole field displacement between the magnetic ring component through axial differential adjusting nut control, thereby be easy to regulate the radial magnetic force of Permanent-magnet bearing and the size of axial magnetic;
3. simple in structure, be easy to assembling, cost is low;
4. resistance of start square is little: according to method described in the GB/T 10760.2-2003; Test to 500w horizontal axis small-sized wind power generator; Under identical experimental condition; Traditional wind resistance of start square is 0.452Nm, and the resistance of start square of small magnetic suspension horizontal shaft wind power generator of the present invention is 0.260Nm.So little resistance of start square can make small magnetic suspension horizontal shaft wind power generator of the present invention realize low wind speed starting, thereby is beneficial to the low wind speed resource of the domestic wide geographic area of exploitation.
Description of drawings
Fig. 1 is the structural representation of small magnetic suspension horizontal shaft wind power generator provided by the invention.
Fig. 2 is the Permanent-magnet bearing magnet ring direction of magnetization and an overlaying structure schematic representation (sectional view) among Fig. 1.
Fig. 3 is for deciding the structural representation of monolithic permanent-magnetic clamp in magnetic ring component and the moving magnetic ring component.
Fig. 4 is the left view of Fig. 3.
Fig. 5 is for deciding magnetic ring component retainer structural representation.
Fig. 6 is moving magnetic ring component retainer structural representation.
Fig. 7 is for deciding magnetic ring component and moving magnet ring magnetism resistent ring structural representation.
Fig. 8 is the left view of Fig. 7.
Fig. 9 is axial differential adjusting nut structural representation.
Among the figure: 1. moving magnetic ring component retainer; 2. rotating shaft; 3. locking nut; 4. moving magnetic ring component; 5. decide the magnetic ring component retainer; 6. clamping screw; 7. stator; 8. locking screw; 9. generator connecting plate; 10. rear support connecting plate; 11. axial differential adjusting nut; 12. bearing support; 13. rolling bearing; 14. rear support; 15. stator casing; 16. pilot sleeve; 17. decide the magnet ring magnetism resistent ring; 18. preceding bearing; 19. decide magnetic ring component; 20. key; 21. moving magnet ring magnetism resistent ring; 22. key; 23. end cap; 24. monolithic permanent-magnetic clamp; 25. big chamber; 26. hole; 27. loculus; 28. through hole; 29. mounting hole; 30. bolt hole; 31. fixed hole; 32. inner chamber; 33. blind hole.
Embodiment
Below in conjunction with embodiment and accompanying drawing the present invention is described further.
Small magnetic suspension horizontal shaft wind power generator provided by the invention comprises rotating shaft, stator and rotor, and wherein: as shown in Figure 1, an end of the rotating shaft 2 of this generator adopts rolling bearing 13 supportings, and the other end adopts the Permanent-magnet bearing supporting, and this end is installed blade.The stator 7 of this generator and rotor arrangements are between Permanent-magnet bearing and rolling bearing.
Described Permanent-magnet bearing, its by moving magnetic ring component 4 with decide magnetic ring component 19 and constitute, moving magnetic ring component is fixed on clamping screw 6 through moving magnet ring magnetism resistent ring 21 and moves on the magnetic ring component retainer 1, is installed in the rotating shaft 2 by key 22 and locking nut 3 again.Decide magnetic ring component through in the preceding bearing 18 of deciding magnetic ring component retainer 5 and being installed in generator.During work, Permanent-magnet bearing will bear the main load of this wind-driven generator.
Above-mentioned moving magnetic ring component 4 can be superposeed by multi-disc (for example 8) NdFeB permanent-magnetic clamp vertically, and the direction of magnetization is the parallel to an axis magnetization; The permanent-magnetic clamp stacked system and the direction of magnetization are as shown in Figure 2, and arrow is represented the direction of magnetization, the structure of monolithic permanent-magnetic clamp 24 such as Fig. 3 and shown in Figure 4.The moving magnet ring magnetism resistent ring 21 and moving magnetic ring component retainer 1 separated magnetic that utilize non-magnet_conductible material to be processed between said permanent-magnetic clamp and the rotating shaft 2, this permanent-magnetic clamp is fixed on the moving magnetic ring component retainer 1 through moving magnet ring magnetism resistent ring 21 and clamping screw 6.Moving magnetic ring component retainer 1 is connected through key 22 with rotating shaft 2, and accomplishes axial restraint by locking nut 3.
Above-mentioned decide magnetic ring component 19 and can be superposeed vertically by multi-disc (for example 8) NdFeB permanent-magnetic clamp, the direction of magnetization is the parallel to an axis magnetization; The permanent-magnetic clamp stacked system and the direction of magnetization are as shown in Figure 2, and arrow is represented the direction of magnetization, the structure of monolithic permanent-magnetic clamp 24 such as Fig. 3 and shown in Figure 4.Utilize non-magnet_conductible material is processed into decide magnet ring magnetism resistent ring 17 and decide magnetic ring component retainer 5 at a distance from magnetic between said permanent-magnetic clamp and the rotating shaft 2, this permanent-magnetic clamp is fixed on and decides on the magnetic ring component retainer 5 through deciding magnet ring magnetism resistent ring 17 and clamping screw 6.Decide magnetic ring component retainer 5 and be connected through key 20, and accomplish axial restraint by end cap 23 with preceding bearing 18.
The permanent-magnetic clamp end of above-mentioned moving magnetic ring component 4 is the moving magnet ring magnetism resistent ring 21 (Fig. 2) that non-magnet_conductible material is made.Like Fig. 7 and shown in Figure 8, this is provided with a plurality of (for example 4) equally distributed and bolt hole 30 that link to each other with clamping screw 6 cooperations above magnetism resistent ring.
The above-mentioned permanent-magnetic clamp end of deciding magnetic ring component 19 be non-magnet_conductible material make decide magnet ring magnetism resistent ring 17 (Fig. 2).Like Fig. 7 and shown in Figure 8, this magnetism resistent ring is identical with the structure of moving magnet ring magnetism resistent ring 21, also is provided with a plurality of (for example 4) equally distributed and bolt hole 30 that link to each other with clamping screw 6 cooperations above it.
Above-mentioned non-magnet_conductible material all adopts aluminum alloy or other material.
Above-mentioned moving magnetic ring component 4 and decide the axial dipole field displacement between the magnetic ring component 19; Can be by axial differential adjusting nut 11 controls; Make Permanent-magnet bearing that radial magnetic force mainly is provided, also produce certain axial magnetic simultaneously, the radial magnetic force supporting role is in the deadweight of most wind loads, blade, rotating shaft and the generator amature of rotating shaft blade end; Eliminate the friction of blade end bearing; Reduce to rub between the rolling bearing, improve the unbalance stress of whole generating machine rotating shaft, but the axial wind of an axial magnetic balance part carries.Axial differential adjusting nut 11 is installed on the rear support 14 of generator.
Said rear support 14 can be linked to each other with generator connecting plate 9 by bolt, and this generator connecting plate is linked to each other with rear support connecting plate 10 by bolt.
Between axial differential adjusting nut 11 and rear support 14, be provided with bearing support 12, they are successively by being threaded, and two groups of pitch in being threaded are different, can realize the fine setting of bearing support 12 axial positions during the differential adjusting nut 11 of axial rotary.
The structure of described axial differential adjusting nut 11 is as shown in Figure 9: it is the cylinder that has the shaft shoulder; This cylinder is provided with inner chamber 32; Shaft shoulder place is provided with a plurality of blind holes 33 that are used to place the special tool of the differential adjusting nut 11 of axial rotary, shaft shoulder place also be provided with a plurality of be used to adjust accomplish after lock shaft to the fixed hole 31 of differential adjusting nut.
Described rolling bearing 13 is installed in the bearing support 12, and this bearing support is used for supporting shaft 2 and the axially locating that realizes this rotating shaft.
Bearing 18 can be linked to each other with pilot sleeve 16 by bolt before described, and this pilot sleeve links to each other with stator casing 15 through locking screw 8.Should before bearing can by key 20 with decide magnetic ring component retainer 5 and link to each other.
Described structure of deciding magnetic ring component retainer 5 is as shown in Figure 5: it is for cylindric; It connects vestibule is made up of with loculus 27 big chamber 25, big chamber 25 with decide magnetic ring component 19 and decide 17 cooperations of magnet ring magnetism resistent ring to link to each other, loculus 27 places have magnetic ring component retainer 1 to pass; Its right periphery is provided with a plurality of holes 26, and these holes are used for the installation of clamping screw 6, and be evenly distributed on loculus 27 around.
The structure of described moving magnetic ring component retainer 1 is as shown in Figure 6: it is the cylinder that has the shaft shoulder, and this cylinder is provided with the through hole 28 that links to each other with rotating shaft 2, and shaft shoulder place is provided with a plurality of mounting holes 29 that are used to install clamping screw 6.
The working procedure of small magnetic suspension horizontal shaft wind power generator provided by the invention (abbreviation generator) is: through regulating the axial differential adjusting nut 11 of rear end; The axial position of deciding 4 of magnetic ring component 19 and moving magnetic ring component of Permanent-magnet bearing is overlapped, thereby make the resistance of start square of generator reach minimum; The torque that provides when blade is during greater than the resisting moment in the generator; The blade impeller begins to rotate under the common supporting of Permanent-magnet bearing and mechanical bearing; Moving magnetic ring component 4 is rotated with rotating shaft 2 under the supporting of magnetic force; And drive the generator amature rotation, and make the coil cutting magnetic line in the generator unit stator produce induction electromotive force, mechanical energy is converted into electric energy.
The present invention can be widely used in vast remote pastoral area, mountain area, island, frontier sentry, meteorological station, the transfer station that can't set up power transmission line; Wind energy resources is in abundant area or the city, and solves its electrical problem as a kind of view installation application in street lamp, lawn light, park, villa etc.
Claims (7)
1. horizontal axis small-sized wind power generator; Comprise rotating shaft, stator and rotor, it is characterized in that a kind of small magnetic suspension horizontal shaft wind power generator, in this generator: an end of its rotating shaft (2) adopts rolling bearing (13) supporting; The other end adopts the Permanent-magnet bearing supporting, and this end is installed blade; Its stator and rotor arrangements are between Permanent-magnet bearing and rolling bearing; Wherein said Permanent-magnet bearing is by moving magnetic ring component (4) and decide magnetic ring component (19) and constitute, and moving magnetic ring component (4) is installed in the rotating shaft (2) by locking nut (3) through moving magnetic ring component retainer (1), decides in the preceding bearing (18) that magnetic ring component (19) is installed in generator; Move magnetic ring component (4) and decide magnetic ring component (19) and superpose vertically by multi-disc NdFeB permanent-magnetic clamp; The direction of magnetization is the parallel to an axis magnetization; The magnetism resistent ring that utilizes retainer that non-magnet_conductible material is processed into and permanent-magnetic clamp end between said permanent-magnetic clamp and the rotating shaft (2) is at a distance from magnetic, and this permanent-magnetic clamp is fixed on the retainer through clamping screw (6); Moving magnetic ring component (4) and the axial dipole field displacement of deciding between the magnetic ring component (19) are controlled by axial differential adjusting nut (11), and this nut is installed on the rear support (14) of generator.
2. horizontal axis small-sized wind power generator according to claim 1 is characterized in that: the end of the permanent-magnetic clamp of moving magnetic ring component (4) is the moving magnet ring magnetism resistent ring (21) that non-magnet_conductible material is made.
3. horizontal axis small-sized wind power generator according to claim 1 is characterized in that: the end of deciding the permanent-magnetic clamp of magnetic ring component (19) be non-magnet_conductible material make decide magnet ring magnetism resistent ring (17).
4. horizontal axis small-sized wind power generator according to claim 1; It is characterized in that: between axial differential adjusting nut (11) and rear support (14), be provided with bearing support (12); They are successively by being threaded; And two groups of pitch in being threaded are different, can realize the fine setting of bearing support (12) axial position during the differential adjusting nut of axial rotary (11).
5. according to claim 1 or 4 described horizontal axis small-sized wind power generators, it is characterized in that: rolling bearing (13) is installed in the bearing support (12), and this bearing support is used for supporting shaft (2) and realize the axially locating of rotating shaft (2).
6. horizontal axis small-sized wind power generator according to claim 1 is characterized in that: preceding bearing (18) is linked to each other with pilot sleeve (16) by bolt, and this pilot sleeve links to each other with stator casing (15) through bolt.
7. horizontal axis small-sized wind power generator according to claim 6 is characterized in that: preceding bearing (18) by key (20) with decide magnetic ring component retainer (5) and link to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101195634A CN101787961B (en) | 2010-03-04 | 2010-03-04 | Small magnetic suspension horizontal shaft wind power generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101195634A CN101787961B (en) | 2010-03-04 | 2010-03-04 | Small magnetic suspension horizontal shaft wind power generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101787961A CN101787961A (en) | 2010-07-28 |
| CN101787961B true CN101787961B (en) | 2012-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101195634A Expired - Fee Related CN101787961B (en) | 2010-03-04 | 2010-03-04 | Small magnetic suspension horizontal shaft wind power generator |
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| Country | Link |
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| CN (1) | CN101787961B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112855517A (en) * | 2021-02-20 | 2021-05-28 | 江苏可奈力机械制造有限公司 | Permanent magnet bearing supporting type plunger pump |
| CN113969864B (en) * | 2021-09-29 | 2022-12-23 | 华电国际宁夏新能源发电有限公司 | Wind turbine generator system main control system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2570949Y (en) * | 2002-09-18 | 2003-09-03 | 常州市武进区星辰实验学校 | Displacement controller |
| CN101034861A (en) * | 2006-03-06 | 2007-09-12 | 广州中科恒源能源科技有限公司 | Fully permanent magnetic floating wind generator |
| CN200986132Y (en) * | 2006-11-08 | 2007-12-05 | 湖南中科恒源风电产业科技有限公司 | Magnetic suspension type wind energy and solar complementary lighting road lamp |
| CN201621017U (en) * | 2010-03-04 | 2010-11-03 | 武汉理工大学 | Magnetic suspension small wind generator with horizontal shaft |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100839890B1 (en) * | 2006-10-26 | 2008-06-27 | 한국기계연구원 | Revolution Device using Permanent Magnet with Damper |
-
2010
- 2010-03-04 CN CN2010101195634A patent/CN101787961B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2570949Y (en) * | 2002-09-18 | 2003-09-03 | 常州市武进区星辰实验学校 | Displacement controller |
| CN101034861A (en) * | 2006-03-06 | 2007-09-12 | 广州中科恒源能源科技有限公司 | Fully permanent magnetic floating wind generator |
| CN200986132Y (en) * | 2006-11-08 | 2007-12-05 | 湖南中科恒源风电产业科技有限公司 | Magnetic suspension type wind energy and solar complementary lighting road lamp |
| CN201621017U (en) * | 2010-03-04 | 2010-11-03 | 武汉理工大学 | Magnetic suspension small wind generator with horizontal shaft |
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| Publication number | Publication date |
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| CN101787961A (en) | 2010-07-28 |
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| CB03 | Change of inventor or designer information |
Inventor after: Hu Yefa Inventor after: Wang Nianxian Inventor after: Wang Xiaoguang Inventor after: Zhang Jinguang Inventor before: Hu Yefa Inventor before: Wang Xiaoguang Inventor before: Zhang Jinguang |
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Free format text: CORRECT: INVENTOR; FROM: HU YEFA WANG XIAOGUANG ZHANG JINGUANG TO: HU YEFA WANG NIANXIAN WANG XIAOGUANG ZHANG JINGUANG |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20120425 Termination date: 20160304 |