CN203554250U - Electromagnetic type vibration generator - Google Patents
Electromagnetic type vibration generator Download PDFInfo
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- CN203554250U CN203554250U CN201320597401.0U CN201320597401U CN203554250U CN 203554250 U CN203554250 U CN 203554250U CN 201320597401 U CN201320597401 U CN 201320597401U CN 203554250 U CN203554250 U CN 203554250U
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Abstract
The utility model relates to an electromagnetic type vibration generator. The core part of the vibration generator is composed of magnet yokes, a vibrating shaft and a shaft hub, wherein a closed magnetic circuit is formed by the vibrating shaft, the left magnet yoke and the right magnet yoke. The electromagnetic type vibration generator can vibrate to generate electricity in a low-frequency and large-displacement condition. Within the magnetic yoke part of the vibration generator, DW465-50 type silicon steel sheets are laminated to form the closed magnetic circuit, so that the leakage flux is obviously reduced. The maximum value of the magnetic induction intensity inside the magnetic yoke part is 1.33T and the utilization rate of the magnetic field is 90.48%. Due to the adoption of the shaft hub structure, the bearing of the vibration generator is prevented from rotating during the vibration process, so that the asymmetrical phenomenon of the magnetic circuit is avoided. Since a linear bearing is adopted to limit permanent magnets and magnet yokes, the influence of the magnetic force on the vibration generator is reduced. The vibration generator is applicable to vibration conditions with the frequencies thereof between 5 and 10 Hz and the displacements thereof between 10 to 20 mm. Meanwhile, the vibration generator is high in utilization rate of magnetic field, simple in assembly, firm and reliable.
Description
Technical field
The utility model relates to the device that the mechanical energy of vibration is converted to electric energy, particularly permanent magnetic vibration Blast Furnace Top Gas Recovery Turbine Unit (TRT), and core is permanent magnetic vibration axle, yoke and propeller boss.This vibrating power-generation function forms closed magnetic circuit, and leakage flux is significantly reduced, and has higher power output under low frequency.
Technical background
Electromagnetic type vibrating electricity generator is the Blast Furnace Top Gas Recovery Turbine Unit (TRT) of utilizing the law of electromagnetic induction to be electric energy by ambient vibration power conversion, its have generated output large, be easy to the advantages such as maintenance.
According to the difference of vibrating mass, electromagnetic type vibrating electricity generator can be divided into moving iron (magnet vibration), moving-coil (coil vibration) and iron ring with shaking (magnet coil vibrates jointly) three types.It is motionless that moving iron is coil, the relative coil vibration of magnet, and in coil, magnetic flux changes, thereby produces induced electromotive force in coil.It is motionless that moving-coil type is magnet, the relative magnet vibration of coil, and in coil, magnetic flux changes, thereby produces induced electromotive force in coil; In order further to improve the electric energy output under low-frequency vibration, there is the vibration energy collector of iron ring with the vibration shape.Iron ring is under extraneous inputted vibration with the vibration shape, and magnet and coil all produce vibration, but has relative motion between the two, produces induced electromotive force in coil.
Although succeeded in developing multiple electromagnetic vibration energy harvester model machine, but the output voltage majority of model machine is less than normal, if the model machine output voltage effective value of Southampton University of Southampton report is 0.5V (Sensors and Actuators A110 (2004) 171), particularly the research under the large displacement vibration condition of low frequency is less, has limited development and the application of electromagnetic type vibrating electricity generator.
Utility model content
The problem existing for existing vibrating electricity generator, considers the vibration under the large displacement condition of low frequency, has designed the moving generator of a kind of novel electromagnetic type of shaking.This vibrating electricity generator core component is yoke, vibrating shaft, propeller boss.It can be for the vibrating power-generation under the large displacement condition of low frequency.Yoke part adopts DW465-50 type silicon steel plate stacking and is shaped as closed magnetic circuit, and leakage field is significantly reduced.The material of vibrating shaft structure permanent magnetism part is neodymium iron boron (Nd2Fe14B), and model is N45.The effect of hub structure is to prevent that vibrating electricity generator from rotating, cause that at the process middle (center) bearing of vibration magnetic circuit is asymmetric.It is spacing that vibrating electricity generator uses linear bearing to carry out permanent magnet and yoke, reduced the impact that magneticaction produces Generator Vibration.Generator yoke part is tied with coil, and for improving power output, the connecting mode of coil adopts coupled in series.Theoretical and experiment shows that vibrating electricity generator is 10Hz in frequency, and when amplitude is 10mm, output voltage peak value is 6V.
The technical solution of the utility model is:
A kind of electromagnetic type vibrating electricity generator, its structure comprises: agent structure is axisymmetric cube structure, and open circles column type hub is installed on top, generator chassis, and hub inner bottom part hollow parts is placed spring; The lower flange bearing of same inner diameter is installed at hub top, and lower flange bearing is connected and fixed by carrying bolt and chassis, and lower flange bearing is passed in hub and spring contact in the bottom of vibrating shaft.
Vibrating shaft is the symmetrical column structure of medial recess, and the part of medial recess is evenly provided with three through holes from top to bottom, and each through hole is embedded with a cylindrical permanent magnet, three cylindrical permanent magnet out-phase arrangements successively; Vibrating shaft lower end is through lower clamp and lower flange bearing, and upper clamp and upper flange bearing are passed in vibrating shaft upper end, and exceed upper flange bearing.
Lower flange bearing upper end is provided with lower clamp, and fixture front/rear end has through hole, and yoke screw is fixed fixture and two E type yokes through through hole; Two E type yokes are arranged on respectively the left and right sides of vibrating shaft medial recess part, three rectangle end face centers of E type yoke, respectively with vibrating shaft in three permanent magnet disc center-aligned, and between three permanent magnet discs, leave respectively equidistant air gap in the rectangle end face part of each E type yoke and vibrating shaft; Between each yoke end face and end face, part is tied with coil, four coiler part head and the tail coupled in series; Each E type yoke top is fixedly clamped by upper clamp by yoke screw equally, and the top of upper clamp is connected with upper flange bearing by hold-down screw; Upper flange bearing is identical with the structure of lower flange bearing, and position is with respect to E type yoke symmetry; Upper and lower clamp structure is identical, and position is with respect to E type yoke symmetry.
Described hub inwall has square groove, and vibrating shaft bottom has square keyway, and flat key is fixed in square keyway, separately outstanding flat key vibrating shaft part is placed in to the square groove of hub inwall.
The beneficial effects of the utility model are: under the vibrational excitation under frequency 5-10Hz, displacement 10-20mm condition, the exportable larger voltage of vibrating electricity generator, can be according to the putting position of orientation determination generator that applies vibration stress in practical application.Generator is focused on magnetic structure, permanent magnetic vibration axle 1 is core component, by vibrating shaft 1 and E type left and right yoke 4,5, form closed magnetic circuit, the magnetic flux density that uses low noise A1324 type Hall element to measure permanent magnet surfaces is 1.47T, and in the yoke of E type left and right, magnetic flux density is 1.33T, and magnetic field utilance is 90.48%, in visible magnetic circuit, leakage flux significantly reduces, improved the utilance in magnetic field, assembling is simple, solid and reliable.
Accompanying drawing explanation
Fig. 1 is electromagnetic type vibrating electricity generator structure chart.
Fig. 2 is the structure chart of Generator Vibration axle.
Fig. 3 is generator hub structure figure.
Fig. 4 is electromagnetic type vibrating electricity generator photo in kind.
Fig. 5 is that vibration frequency is 10Hz, the output electromotive force oscillogram of vibrating electricity generator when amplitude is 10mm.
Wherein, 1-vibrating shaft; 2-upper flange bearing; 3-upper clamp; The left yoke of 4-E type; The right yoke of 5-E type; 6-lower clamp; 7-lower flange bearing 8-carrying bolt; 9-hub; 10-chassis; 11-13 cylinder type neodymium iron boron permanent magnet; The square keyway of 14-; 15-spring; 16-flat key; 17-hold-down screw; 18-yoke screw; 19-coil; 20-square groove.
Embodiment
Below in conjunction with accompanying drawing and technical scheme, describe concrete enforcement of the present utility model in detail, but they not that the utility model is imposed any restrictions.
As shown in Figure 1, the structure of the electromagnetic type vibrating electricity generator of the utility model design is: agent structure is axisymmetric cube structure, open circles column type hub 9 is installed on 10 tops, generator chassis, and hub 9 inwalls have square groove 20(as shown in Figure 3), hub 9 inner bottom part hollow parts are placed spring 15; The lower flange bearing 7 of same inner diameter is installed at hub 9 tops, and lower flange bearing 7 is connected and fixed by carrying bolt 8 and chassis 10, and the bottom of vibrating shaft 1 contacts with spring 15 in hub 9 through lower flange bearing 7.
The structure of vibrating shaft 1 described in the utility model as shown in Figure 2, the symmetrical column structure that vibrating shaft 1 is medial recess, the part of medial recess is evenly provided with three through holes from top to bottom, each through hole is embedded with a cylindrical permanent magnet, three cylindrical permanent magnet 11-13 out-phase arrangements successively, vibrating shaft 1 bottom has square keyway 14, and flat key 16 is fixed in square keyway 14 and forms an entirety with vibrating shaft.Whirling vibration axle, makes the outstanding vibrating shaft part of its flat key 16 align with the square groove 20 of hub 9 inwalls, and vibrating shaft slips in hub 9 along square groove 20.
Lower flange bearing 7 upper ends are provided with lower clamp 6, with hold-down screw 17, lower clamp 6 is fixing with lower flange bearing 7, lower clamp 6 front/rear ends have through hole, adopt yoke screw 18 to utilize through hole by fixing left and right to lower clamp 6 and E type yoke 4,5.The left and right yoke 4,5 of E type is arranged on respectively the left and right sides of vibrating shaft 1 medial recess part, three rectangle end face centers of each E type yoke, respectively with vibrating shaft 1 in three permanent magnet 11,12,13 each disc center-aligned, and between three permanent magnet discs, leave respectively equidistant air gap in the rectangle end face part of E type yoke 4,5 and vibrating shaft.Between each yoke end face and end face, part is tied with 19, four coiler part head and the tail coupled in series of coil.Each E type yoke top is fixedly clamped by upper clamp 3 by yoke screw equally, and upper clamp 3 is connected with upper flange bearing 2 by hold-down screw 17.Upper flange bearing 2 is identical with the structure of lower flange bearing 7, and position is with respect to E type yoke symmetry; Upper clamp 3, lower clamp 6 structures are identical, and position is with respect to E type yoke symmetry.
Vibrating shaft part: select cylindrical austenitic stainless steel (non-magnet material) as vibrating shaft 1, avoid affecting magnetic circuit.Vibrating shaft total length 330mm, two ends diameter is 25mm, two ends length is 85mm, medial recess, sunk part is flat structure, the long 160mm of sunk part, thick 10mm.The part of medial recess is evenly processed the through hole that three diameters are 20mm from top to bottom, and in three through holes, intermediate throughholes heart portion is positioned at 1/2nd places of vibrating shaft length direction, and upper and lower through hole heart portion is respectively apart from the central through hole heart 30mm of portion.In through hole, an external diameter of each placement is the cylindrical permanent magnet that 20mm, thickness are 10mm, the N of three cylindrical permanent magnet, the out-phase arrangement successively of the S utmost point, and these three permanent magnet disc centers are relative with three end face centers of E type yoke respectively.Vibrating shaft end has square keyway 14, and flat key 16 is fixed in square keyway 14, and object is to prevent that generator is in vibration processes, and vibrating shaft deflects.
Fig. 1 is the installation diagram of electromagnetic type vibrating electricity generator.During test, External Force Acting on Generator Vibration axle 1, Generator Vibration shaft end and spring contact, Compress Spring.For preventing that vibrating shaft 1 from deflecting in vibration processes, at vibrating shaft end, have the square keyway 14 of 3.5 × 4 × 8mm, in groove, insert 4 × 4 × 8mm flat key, flat key is inserted and is of a size of 2mm and vibrating shaft and realizes and tightly connecting.Hub is the hollow cylinder of 26mm × 34mm × 100mm, and hub inwall has 4.5 × 1.5 × 100mm square groove, realizes pine connect with flat key, and this propeller boss fit structure can not deflect generator in vibration processes.Yoke 4,5 is E type structure, is divided into upper surface, middle end face and lower surface, and three face sizes are all 10 × 20mm, and three end faces are to each other apart from 20mm.Three permanent magnet 11-13 and the actionless E type yoke 4,5 of in this process, inlaying on Generator Vibration axle produce relative motion, cause the inner magnetic induction density B of yoke to change, in E type yoke, be tied with coil, according to Faraday's electromagnetic induction law, on coil, can produce induced electromotive force, the voltage waveform gathering with oscilloscope as shown in Figure 5.Vibrating shaft 1 lower end is through lower clamp 6 and lower flange bearing 7, end flat key 16 is aimed at square groove 20, vibrating shaft slips in hub 9 and joins with hub inner spring 15 along square groove, the permanent magnet end face center of circle, three, vibrating shaft medial recess place is relative with end face center, three of E type yoke upper, middle and lower, left and right respectively, vibrating shaft upper end exceeds upper flange bearing 2, and prestressing force can be loaded into vibrating shaft upper end surface.
Fig. 2 is Generator Vibration axle installation diagram.Vibrating shaft is the cylinder stainless steel of 25mm medial recess, sunk part is installed three cylinder type neodymium iron boron permanent magnet 11-13(Nd2Fe14B that external diameter is the thick 10mm of 20mm, model is N45), three permanent magnet centre-to-centre spacing are 30mm, end has the square keyway 14 of 3.5 × 4 × 8mm.
Consider and between permanent magnetism and yoke, have stronger attraction, therefore use 2, the 7 pairs of vibrating shafts of round flange linear bearing that are distributed in two ends to carry out spacing, gravitation between permanent magnetism and yoke is converted into the force of rolling friction between vibrating shaft and bearing, significantly cuts down the impact of magneticaction on Generator Vibration.
Yoke part: E type left and right yoke 4,5 parts are each adopts 40 thick silicon steel plate stackings of 0.5mm to form, and determines the size of yoke front end face according to the BH curve of the magnetic property of permanent magnetic material and silicon steel sheet.The long 70mm of yoke, wide 20mm, the wide 10mm of end face, end face and end face distance 20mm.Silicon steel sheet upper and lower part has through hole, and screw 18, successively through fixture through hole, yoke through hole, is fixed upper clamp 3, lower clamp 6 with left and right yoke 4,5.Upper clamp 3, lower clamp 6 structures are in full accord, and the front/rear end of fixture, at same position place, is processed respectively the through hole that two diameters are 3mm, through hole distance of center circle 26mm.Fixture upper surface processing diameter is that 5mm distance of center circle is two through holes of 51mm.The counterclockwise coiling of left yoke 4 upper coil of E type, the clockwise coiling of bottom yoke coil, by upper coil end and the welding of lower coil head end; The clockwise coiling of right yoke 5 upper coil, coiling that lower coil is counterclockwise, by upper coil end and the welding of lower coil head end; Left yoke 4 lower coil ends and right yoke 5 upper coil tops are connected in series, when generator operation, four coils are equivalent to four power supplys and are cascaded again, and make always to export electromotive force and strengthen.
Holder part: generator support is mainly built-in by chassis 10, spring 15(), carrying bolt 8, hub 9 form.Chassis 10 diameter 120mm, thick 8mm; The long 150mm of carrying bolt 8; Hub internal diameter 26mm, external diameter 34mm, high 90mm.Chassis lower surface has two lower down-the-holes that diameter is 9mm, and pitch-row and the bearing flange pitch-row diameter that is consistent is 51mm, has assembled rear chassis and can steadily contact with ground.Utilize carrying bolt 8 fixed underpans 10 and lower flange bearing 7.In hub 9, have square groove 20, vibrating shaft one end that flat key 16 is installed is slipped in hub, realize propeller boss and coordinate, prevent generator deflection in vibration processes.The spring 15 that in hub 9, placing height is 80mm, for vibrating shaft 1 provides restoring force.
Dynamic process: when Generator Vibration axle 1 is subject to used time of doing of certain extraneous power F changing, power F is passed to spring 15, in this process, vibrating shaft and E type left and right yoke 4,5 produce relative motion, spring generation deformation, when external force disappears, because the effect vibrating shaft of spring 15 is returned to equilbrium position.In this process, along with the vibration of vibrating shaft, the magnetic circuit part intrinsic inductance B moment being comprised of cylindrical permanent magnet 11-13 and left and right yoke 4,5 changes, according to Faraday's electromagnetic induction law, when magnetic induction density B changes, in coil, produce induced electromotive force.
Fig. 5 is that vibration frequency is that 10Hz, amplitude are the output electromotive force oscillogram of vibrating electricity generator under 10mm condition.In figure, abscissa T represents the time, and unit is second, and ordinate U represents output voltage, and unit is volt.The output voltage peak value of vibrating electricity generator is 6V as shown in Figure 5, shows that the vibrating electricity generator of development has very large output voltage under low frequency.
The utility model unaccomplished matter is known technology.
Claims (2)
1. an electromagnetic type vibrating electricity generator, this electric generator structure comprises: agent structure is axisymmetric cube structure, and open circles column type hub is installed on top, generator chassis, and hub inner bottom part hollow parts is placed spring; The lower flange bearing of same inner diameter is installed at hub top, and lower flange bearing is connected and fixed by carrying bolt and chassis, and lower flange bearing is passed in hub and spring contact in the bottom of vibrating shaft;
Vibrating shaft is the symmetrical column structure of medial recess, and the part of medial recess is evenly provided with three through holes from top to bottom, and each through hole is embedded with a cylindrical permanent magnet, three cylindrical permanent magnet out-phase arrangements successively; Vibrating shaft lower end is through lower clamp and lower flange bearing, and upper clamp and upper flange bearing are passed in vibrating shaft upper end, and exceed upper flange bearing;
Lower flange bearing upper end is provided with lower clamp, and fixture front/rear end has through hole, and yoke screw is fixed fixture and two E type yokes through through hole; Two E type yokes are arranged on respectively the left and right sides of vibrating shaft medial recess part, three rectangle end face centers of E type yoke, respectively with vibrating shaft in three permanent magnet disc center-aligned, and between three permanent magnet discs, leave respectively equidistant air gap in the rectangle end face part of each E type yoke and vibrating shaft; Between each yoke end face and end face, part is tied with coil, four coiler part head and the tail coupled in series; Each E type yoke top is fixedly clamped by upper clamp by yoke screw equally, and the top of upper clamp is connected with upper flange bearing by hold-down screw; Upper flange bearing is identical with the structure of lower flange bearing, and position is with respect to E type yoke symmetry; Upper clamp, lower clamp structure are identical, and position is with respect to E type yoke symmetry.
2. electromagnetic type vibrating electricity generator as claimed in claim 1, is characterized by described hub inwall and has square groove, and vibrating shaft bottom has square keyway, and flat key is fixed in square keyway, separately outstanding flat key vibrating shaft part is placed in to the square groove of hub inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320597401.0U CN203554250U (en) | 2013-09-25 | 2013-09-25 | Electromagnetic type vibration generator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320597401.0U CN203554250U (en) | 2013-09-25 | 2013-09-25 | Electromagnetic type vibration generator |
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| CN203554250U true CN203554250U (en) | 2014-04-16 |
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| CN201320597401.0U Withdrawn - After Issue CN203554250U (en) | 2013-09-25 | 2013-09-25 | Electromagnetic type vibration generator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103607092A (en) * | 2013-09-25 | 2014-02-26 | 河北工业大学 | Electromagnetic type vibration generator |
| CN103929038A (en) * | 2014-04-30 | 2014-07-16 | 国家电网公司 | Magnetism conduction sliding block power transformation device in constant magnetic field |
-
2013
- 2013-09-25 CN CN201320597401.0U patent/CN203554250U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103607092A (en) * | 2013-09-25 | 2014-02-26 | 河北工业大学 | Electromagnetic type vibration generator |
| CN103607092B (en) * | 2013-09-25 | 2015-09-02 | 河北工业大学 | A kind of electromagnetic type vibration generator |
| CN103929038A (en) * | 2014-04-30 | 2014-07-16 | 国家电网公司 | Magnetism conduction sliding block power transformation device in constant magnetic field |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140416 Effective date of abandoning: 20150902 |
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| RGAV | Abandon patent right to avoid regrant |