CN106357159A - Nonlinear vortex-induced vibration energy collector having force-current-fluid coupling function - Google Patents
Nonlinear vortex-induced vibration energy collector having force-current-fluid coupling function Download PDFInfo
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- CN106357159A CN106357159A CN201610962588.8A CN201610962588A CN106357159A CN 106357159 A CN106357159 A CN 106357159A CN 201610962588 A CN201610962588 A CN 201610962588A CN 106357159 A CN106357159 A CN 106357159A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
- H02N2/185—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators using fluid streams
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Abstract
The invention discloses a nonlinear vortex-induced vibration energy collector having a force-current-fluid coupling function. The nonlinear vortex-induced vibration energy collector comprises an upper top plate, a lower base plate, a support pillar, a cantilever beam, bimorph cells, a cylinder, upper and lower magnetic mechanisms, a rectifying circuit and a super capacitor, wherein the two ends of the support pillar are respectively fixed on the upper top plate and the lower base plate; one end of the cantilever beam is arranged on the support pillar; the other end of the cantilever beam is fixed on the cylinder; the cylinder is suspended; the bimorph cells are symmetrically fixed on the cantilever beam; the upper magnetic mechanism comprises an upper permanent magnet, an upper repulsion magnet and two upper attracting magnets; the lower magnetic mechanism comprises a lower permanent magnet, a lower repulsion magnet and two lower attracting magnets; the upper permanent magnet and the lower permanent magnet are respectively fixed on upper and lower end faces of the cylinder; the upper repulsion magnet and the two upper attracting magnets are fixed on the upper top plate; the lower repulsion magnet and the two lower attracting magnets are fixed on the lower base plate; and the super capacitor is connected with the bimorph cells through the rectifying circuit. The collector has a simple structure and is capable of increasing the energy collecting efficiency.
Description
Technical field
The present invention relates to new forms of energy with microelectronic component energy supply technical field and in particular to a kind of power-electricity-flow couples work
Nonlinear Vortex-induced energy collecting device.
Background technology
With developing rapidly of micro-fabrication technology and modern integrated circuits, substantial amounts of electronic product, such as health monitor, no
Line sensor heart rate pacemaker etc., shows the features such as high accuracy, miniaturization and low-power consumption.For example, for monitoring structural health conditions
The sensor mean power required in normal work less than 48 μ w.At present, these electronic products generally adopt wired transmission of electricity
Or by battery to realize energy supply.However, wired transmission of electricity can cause to spread line puzzlement, especially for remote, environment relatively
Severe remote districts；And battery is powered and had the shortcomings that short life, the feature of environmental protection be poor, maintenance cost is high, this undoubtedly gives engineering circles
Bring huge challenge.In consideration of it, some new " energy acquisition " technology are arisen at the historic moment.So far, a kind of possible approach be by
In natural environment, discarded energy is converted into available electric energy, to reducing or replacing the length to battery or wired power transmission mode
Phase relies on.
At present, mainly there are three kinds of modes that the vibrational energy in environment is converted to electric energy: electromagnetism, electrostatic and piezoelectric energy-conversion machine
System.Compared with other electricity generating principles, the sharpest edges of piezoelectric energy-conversion be that structure is simple it is easy to be fabricated to various required sizes and
Shape, is easy to integrated with MEMS or is placed in internal system, and the voltage ratio that piezoelectric energy-capturing produces is larger.
Flow vibration phenomenon includes vortex-induced vibration, galloping, tremor etc..Wherein, galloping and tremor are as flow velocity or wind speed
Increase be gradually increased.And vortex-induced vibration be a kind of self-excitation and from limit oscillation phenomenon, when flow velocity within a certain range when, structure
Resonance response can be occurred to produce larger output voltage.So can avoid leading to structure that big change occurs because of larger flow velocity or wind speed
Shape, thus cause the destruction of beam or piezoelectric structure.Therefore, vortex-induced vibration energy acquisition has broad application prospects.
Content of the invention
Based on above-mentioned prior art, the invention provides a kind of Nonlinear Vortex-induced energy of power-electricity-flow coupling
Amount harvester, this harvester structure is simple, and it is in the presence of introducing nonlinear magnetism ferreous (monostable or bi-stable character),
And then improve vortex-induced vibration intensity, increase frequency locking region (resonance flow rates), the environment to strengthening energy collecting device adapts to
Ability, improves energy acquisition efficiency.
Realizing the technical scheme that above-mentioned purpose of the present invention sampled is:
A kind of Nonlinear Vortex-induced energy collecting device of power-electricity-flow coupling, including upper plate, lower shoe, props up
Dagger, cantilever beam, bimorph, cylinder, upper magnetic force mechanism and lower magnetic force mechanism, upper plate, parallel to lower shoe, supports
The two ends of post are individually fixed on upper plate and lower shoe, and support column leads to perpendicular to upper plate and lower shoe, one end of cantilever beam
Cross clamp system to be installed on the middle part of support column, the other end is fixed on the middle part of cylindrical sidewall, cylinder is hanging and position
Between upper plate and lower shoe, cylinder is symmetrically fixed perpendicular to support column, bimorph parallel to support column, cantilever beam
On the side wall of cantilever beam, upper magnetic force mechanism includes the upper captivation Magnet of permanent magnet, upper repulsion Magnet and two blocks, lower magnetic force machine
Structure includes lower permanent magnet, lower repulsion Magnet and two blocks of lower captivation Magnet, and upper permanent magnet and lower permanent magnet are individually fixed in cylinder
The central authorities in body upper and lower ends face, upper repulsion Magnet and two blocks of upper captivation Magnet are both secured on upper plate, and two pieces of upper attractions
Power Magnet is symmetrically distributed in the both sides of repulsion Magnet, and lower repulsion Magnet and two blocks of lower captivation Magnet are both secured to lower shoe
On, and two blocks of lower captivation Magnet is symmetrically distributed in the both sides of lower repulsion Magnet, upper repulsion Magnet is located at just going up of upper permanent magnet
Side, lower repulsion Magnet is located at the underface of lower permanent magnet.
Described clamp system includes two clamping plates and multiple bolt, and support is fixed in the end that two clamping plate are located at the same side
On post, one end of cantilever beam is located between two clamping plate and is adjacent to two clamping plate, and cantilever beam is bolted to two clamping plate by multiple
On.
Also include rectification circuit and super capacitor, super capacitor is connected with bimorph by rectification circuit, described
Rectification circuit is by diode d1, diode d2, diode d3, diode d4, resistance r1, diode d5, diode d6, diode
D7, diode d8 and resistance r2, in the positive half cycle of vibration, diode d2 and diode d4 conducting, diode d5 and diode d7
Conducting, connects resistance r1 and super capacitor c1 after parallel connection；In the negative half period of vibration, diode d1 and diode d3 conducting, two poles
Pipe d6 and diode d8 conducting, connects resistance r2 and super capacitor c1 after parallel connection.
The spacing of the spacing of upper repulsion Magnet and upper permanent magnet and lower repulsion Magnet and lower permanent magnet is 0.5-2cm,
One of upper captivation Magnet is 2-5cm, one of lower captivation Magnet and lower repulsion magnetic with the spacing of upper repulsion Magnet
The spacing of ferrum is 2-5cm.
Described upper repulsion Magnet, upper permanent magnet, upper captivation Magnet, lower repulsion Magnet, lower permanent magnet and lower captivation
Magnet is all in button shape.
Described cylindrical material is extruded sheet, and the material of bimorph is piezoelectric fibre composite material.
Compared with prior art, advantages and advantages of the invention are:
1st, this harvester capturees energy under vibrating conditions using piezoelectric effect, under the coupling of wind load and magnetic force, effectively
Increased piezoelectricity less lock-in range under independent wind load acts on, be more beneficial under less wind speed or larger wind speed prisoner
Obtain wind energy, increased the adaptive capacity to environment of harvester.
2nd, this harvester is a kind of piezoelectric type energy accumulator of wind-magnetic coupling interaction energy supply, due to magnetic repulsion or magnetic attraction
Introducing vortex-induced vibration of cylinder is changed so that the amplitude of cantilever beam and frequency of vibration all there occurs change, enter
And the voltage of energy collecting device capture and power are all increased, the prisoner enhancing energy collecting device can effect.
Brief description
Fig. 1 is the structural representation of the Nonlinear Vortex-induced energy collecting device of power-electricity-flow coupling of the present invention
Figure.
Fig. 2 is the partial schematic diagram of i in Fig. 1.
Fig. 3 is that the Nonlinear Vortex-induced energy collecting device workflow of the power-electricity-flow coupling of the present invention is illustrated
Figure.
The circuit diagram that Fig. 4 connects for rectification circuit.
Fig. 5 changes and the rule figure that changes with wind speed for the power that produces of energy collecting device of the present invention.
Fig. 6 is the connection circuit diagram measuring energy collecting device power harvesting in test one.
Wherein, 1- upper plate, 2- lower shoe, 3- support column, 4- cantilever beam, 5- bimorph, 6- cylinder, on 7- forever
Captivation Magnet under repulsion Magnet under permanent magnet under Magnet, 8- upper repulsion Magnet, 9- upper captivation Magnet, 10-, 11-, 12-,
13- clamping plate, 14- bolt.
Specific embodiment
The present invention is described in detail below in conjunction with the accompanying drawings.
The structural representation of the Nonlinear Vortex-induced energy collecting device of power-electricity-flow coupling that the present invention provides
As shown in figure 1, this harvester include upper plate 1, lower shoe 2, support column 3, cantilever beam 4, bimorph 5, cylinder 6, on
Magnetic force mechanism, lower magnetic force mechanism, rectification circuit and super capacitor.Cylindrical material is extruded sheet.The material of bimorph
For piezoelectric fibre composite material, compare Common piezoelectricity pottery, have an advantage in that generating efficiency is higher.
Parallel to lower shoe 2, the two ends of support column 3 are individually fixed in same on upper plate 1 and lower shoe 2 upper plate 1
On side, support column 3 is perpendicular to upper plate 1 and lower shoe 2.One end of cantilever beam 4 is installed in support column 3 by clamp system
In portion, cantilever beam is elastic, and very thin, is easier to vibrate.As shown in Fig. 2 clamp system includes two clamping plates 13 He
Two bolts 14, the end that two clamping plate 13 are located at the same side is welded on support column 3, and one end of cantilever beam 4 is located at two clamping plate 13
Between and be adjacent to two clamping plate, and cantilever beam 4 is fixed on two clamping plate by two bolts 14.The other end insertion circle of cantilever beam 4
Fix in the middle part of cylinder 6 side wall and by glue.Cylinder 6 is hanging and is located between upper plate 1 and lower shoe 2, cylinder 6
Parallel to support column 3, cantilever beam 4 is perpendicular to support column 3.Bimorph 5 is symmetrically fixed on cantilever beam 4 by way of pasting
Side wall on.
Upper magnetic force mechanism includes the upper captivation Magnet 9 of permanent magnet 7, upper repulsion Magnet 8 and two blocks, and lower magnetic force mechanism includes
Lower permanent magnet 10, lower repulsion Magnet 11 and two blocks of lower captivation Magnet 12, upper repulsion Magnet 7, upper permanent magnet 8, upper captivation magnetic
Ferrum 9, lower repulsion Magnet 10, lower permanent magnet 11 and lower captivation Magnet 12 are all in button shape.Upper permanent magnet 7 and lower permanent magnet 10 lead to
Cross the central authorities that the mode pasted is individually fixed in cylinder 6 upper and lower ends face.Upper repulsion Magnet 8 and two blocks of upper captivation Magnet 9
All it is fixed on upper plate 1 by way of pasting, and two blocks of upper captivation Magnet 9 are symmetrically distributed in the two of repulsion Magnet 8
Side, one of upper captivation Magnet is 3cm with the spacing of upper repulsion Magnet.Lower repulsion Magnet 10 and two blocks of lower captivation Magnet
11 are all fixed on lower shoe 2 by way of pasting, and two blocks of lower captivation Magnet 12 are symmetrically distributed in lower repulsion Magnet 11
Both sides, the spacing of one of lower captivation Magnet and lower repulsion Magnet is 3cm.Upper repulsion Magnet 8 is located at upper permanent magnet 7
Surface, the spacing of upper repulsion Magnet and upper permanent magnet is 1cm.Lower repulsion Magnet 11 is located at the underface of lower permanent magnet 10, under
The spacing of repulsion Magnet and lower permanent magnet is 1cm.Upper repulsion Magnet 8, upper permanent magnet 7, lower repulsion Magnet 11 and lower permanent magnet 10,
The axis of cylinder 6 is on the same line.
Super capacitor is connected with bimorph by rectification circuit, and AC conversion is unidirectional current by rectification circuit.As
Shown in Fig. 4, rectification circuit is by diode d1, diode d2, diode d3, diode d4, resistance r1, diode d5, diode
D6, diode d7, diode d8 and resistance r2, vibration positive half cycle, diode d2 and diode d4 conducting, diode d5 and
Diode d7 turns on, and connects resistance r1 and super capacitor c1 after parallel connection；In the negative half period of vibration, diode d1 and diode d3 leads
Logical, diode d6 and diode d8 conducting, connect resistance r2 and super capacitor c1 after parallel connection.
The operation principle of this harvester is as follows:
As shown in figure 3, when laterally flow (wind) through cylinder and flow velocity in a certain scope when, cylinder produce vortex shedding
There is vortex-induced vibration, thus driving cantilever beam and bimorph that of reciprocating vibration, generation strain occurs；In vibration processes, double
Stable state Magnet power can realize (without captivation Magnet) by permanent magnet and repulsion Magnet；Monostable Magnet power can by permanent magnet and
Captivation Magnet realizes (without repulsion Magnet)；This non-linear monostable or the ferreous introducing of bistable magnetic, are expected to increase circle
The vortex-induced vibration amplitude of cylinder and resonance flow rates, thus provide energy acquisition performance and efficiency；Bimorph can be with outstanding
Arm beam vibration strains, and produces alternating voltage, can export available DC voltage by connecting with external current-regulating circuit,
Again electric energy is stored by super capacitor, and then be sensor or micro-electromechanical device energy supply.
Experiment one, the energy capture of the Nonlinear Vortex-induced energy collecting device of power-electricity-flow coupling of the present invention
Experiment
Experimental technique:
By the energy collecting device of above-described embodiment among wind-tunnel, resistance r is 400 kilo-ohms (for convenience of experiment, only external electricity
Resistance r), installs voltmeter in circuit, measures voltage, as shown in fig. 6, adjusting wind speed size, the voltage obtaining under different wind speed is equal
Root, and then obtain the average power content under different wind speed.
Various Magnet in the energy collecting device of above-described embodiment are removed, the matched group device as no magnetic force carries out reality
Test.
Experimental result:
Experimental result as shown in figure 5, not having under magneticaction from fig. 5, it can be seen that comparing, the energy acquisition of the present invention
Device (magnetic force and wind-force coupling) can improve energy acquisition efficiency and raising lock-in regime be played the role of obvious.
Above content is the further description present invention done with reference to specific preferred implementation it is impossible to assert
Being embodied as of the present invention is confined to these explanations.For general technical staff of the technical field of the invention,
On the premise of present inventive concept, some simple deduction or replace can also be made, such as change mass Magnet shape, change
Become magnet pitch, all should be considered as belonging to protection scope of the present invention.
Claims (6)
1. a kind of power-electricity-flow coupling Nonlinear Vortex-induced energy collecting device it is characterised in that: include upper plate,
Lower shoe, support column, cantilever beam, bimorph, cylinder, upper magnetic force mechanism and lower magnetic force mechanism, upper plate parallel under
Base plate, the two ends of support column are individually fixed on upper plate and lower shoe, and support column is perpendicular to upper plate and lower shoe, cantilever beam
One end be installed on the middle part of support column by clamp system, the other end is fixed on the middle part of cylindrical sidewall, cylinder
Vacantly and positioned between upper plate and lower shoe, parallel to support column, cantilever beam is perpendicular to support column, bimorph for cylinder
It is symmetrically fixed on the side wall of cantilever beam, upper magnetic force mechanism includes the upper captivation Magnet of permanent magnet, upper repulsion Magnet and two blocks,
Lower magnetic force mechanism includes lower permanent magnet, lower repulsion Magnet and two blocks of lower captivation Magnet, and upper permanent magnet and lower permanent magnet are solid respectively
Due to the central authorities in cylinder upper and lower ends face, upper repulsion Magnet and two blocks of upper captivation Magnet are both secured on upper plate, and two
On block, captivation Magnet is symmetrically distributed in the both sides of repulsion Magnet, and lower repulsion Magnet and two blocks of lower captivation Magnet are both secured to
On lower shoe, and two blocks of lower captivation Magnet is symmetrically distributed in the both sides of lower repulsion Magnet, and upper repulsion Magnet is located at upper permanent magnet
Surface, lower repulsion Magnet be located at lower permanent magnet underface.
2. the Nonlinear Vortex-induced energy collecting device of power according to claim 1-electricity-flow coupling, its feature
It is: described clamp system includes two clamping plates and multiple bolt, support column is fixed in the end that two clamping plate are located at the same side
On, one end of cantilever beam is located between two clamping plate and is adjacent to two clamping plate, and cantilever beam is fixed on two clamping plate by multiple bolts.
3. the Nonlinear Vortex-induced energy collecting device according to the arbitrary described power-electricity-flow coupling of claim 1-2,
It is characterized in that: also include rectification circuit and super capacitor, super capacitor is connected with bimorph by rectification circuit, described
Rectification circuit by diode d1, diode d2, diode d3, diode d4, resistance r1, diode d5, diode d6, two poles
Pipe d7, diode d8 and resistance r2, in the positive half cycle of vibration, diode d2 and diode d4 conducting, diode d5 and diode
D7 turns on, and connects resistance r1 and super capacitor c1 after parallel connection；In the negative half period of vibration, diode d1 and diode d3 conducting, two
Pole pipe d6 and diode d8 conducting, connect resistance r2 and super capacitor c1 after parallel connection.
4. the Nonlinear Vortex-induced energy collecting device of power according to claim 3-electricity-flow coupling, its feature
It is: upper repulsion Magnet and the spacing of upper permanent magnet and the spacing of lower repulsion Magnet and lower permanent magnet are 0.5-2cm, wherein
One block of upper captivation Magnet is 2-5cm with the spacing of upper repulsion Magnet, one of lower captivation Magnet and lower repulsion Magnet
Spacing is 2-5cm.
5. the Nonlinear Vortex-induced energy collecting device of power according to claim 4-electricity-flow coupling, its feature
It is: described upper repulsion Magnet, upper permanent magnet, upper captivation Magnet, lower repulsion Magnet, lower permanent magnet and lower captivation Magnet
All in button shape.
6. the Nonlinear Vortex-induced energy collecting device of power according to claim 5-electricity-flow coupling, its feature
It is: described cylindrical material is extruded sheet, the material of bimorph is piezoelectric fibre composite material.
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| CN201610962588.8A CN106357159B (en) | 2016-11-04 | 2016-11-04 | A kind of Nonlinear Vortex-induced energy collecting device of power-electricity-flow coupling |
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Cited By (12)
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| CN106870269A (en) * | 2017-03-08 | 2017-06-20 | 河海大学 | A kind of marine tidal-current energy and vortex-induced vibration energy composite generating set |
| CN107134948A (en) * | 2017-06-27 | 2017-09-05 | 华中科技大学 | A kind of adaptive wideband fluid energy accumulator |
| CN108266327A (en) * | 2018-03-26 | 2018-07-10 | 华中科技大学 | A kind of model wind generating device |
| CN108847788A (en) * | 2018-08-01 | 2018-11-20 | 南京邮电大学 | One kind being based on multistable piezoelectric harvester |
| CN108955866A (en) * | 2017-05-21 | 2018-12-07 | 天津大学（青岛）海洋工程研究院有限公司 | A kind of piezoelectric vibration frequency sensor system based on biasing reverse circuit |
| CN109150012A (en) * | 2018-10-18 | 2019-01-04 | 山东理工大学 | A kind of piezoelectricity based on wind-induced vibration-Electromagnetic heating generator |
| CN109799396A (en) * | 2019-01-21 | 2019-05-24 | 北京工业大学 | The experimental provision and its application method of vortex-induced vibration piezoelectric harvester in water flow |
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| CN108955866A (en) * | 2017-05-21 | 2018-12-07 | 天津大学（青岛）海洋工程研究院有限公司 | A kind of piezoelectric vibration frequency sensor system based on biasing reverse circuit |
| CN108955866B (en) * | 2017-05-21 | 2023-11-07 | 天津大学（青岛）海洋工程研究院有限公司 | Piezoelectric vibration frequency sensor system based on bias flip circuit |
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| CN108847788A (en) * | 2018-08-01 | 2018-11-20 | 南京邮电大学 | One kind being based on multistable piezoelectric harvester |
| CN109150012A (en) * | 2018-10-18 | 2019-01-04 | 山东理工大学 | A kind of piezoelectricity based on wind-induced vibration-Electromagnetic heating generator |
| CN109799396A (en) * | 2019-01-21 | 2019-05-24 | 北京工业大学 | The experimental provision and its application method of vortex-induced vibration piezoelectric harvester in water flow |
| CN109799396B (en) * | 2019-01-21 | 2021-02-02 | 北京工业大学 | Experimental device for vortex-induced vibration piezoelectric energy harvester in water flow and using method thereof |
| CN111082703A (en) * | 2020-01-08 | 2020-04-28 | 哈尔滨工程大学 | Lamp buoy power supply device and lamp buoy with same |
| CN111082703B (en) * | 2020-01-08 | 2023-07-25 | 哈尔滨工程大学 | Lamp buoy power supply device and lamp buoy with same |
| CN112202364A (en) * | 2020-09-29 | 2021-01-08 | 长春工业大学 | Piezoelectric energy harvester for river monitoring |
| CN112234790A (en) * | 2020-10-04 | 2021-01-15 | 长春工业大学 | Water flow vibration piezoelectric electromagnetic combined type energy collecting device |
| CN113358071A (en) * | 2021-06-08 | 2021-09-07 | 西南交通大学 | Self-powered bridge structure displacement monitoring device and method |
| CN114285323A (en) * | 2021-12-31 | 2022-04-05 | 安徽工程大学 | Vibration energy collector device |
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