CN107508494B - A kind of tunnel air-flow cause vibration energy accumulator - Google Patents
A kind of tunnel air-flow cause vibration energy accumulator Download PDFInfo
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- CN107508494B CN107508494B CN201710729378.9A CN201710729378A CN107508494B CN 107508494 B CN107508494 B CN 107508494B CN 201710729378 A CN201710729378 A CN 201710729378A CN 107508494 B CN107508494 B CN 107508494B
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- 239000000758 substrate Substances 0.000 claims abstract description 13
- 238000009434 installation Methods 0.000 claims abstract description 9
- 238000005452 bending Methods 0.000 claims description 26
- 238000010276 construction Methods 0.000 claims description 7
- 125000004122 cyclic group Chemical group 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000010248 power generation Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- H02N2/186—Vibration harvesters
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- Wind Motors (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The present invention relates to a kind of tunnel air-flows to cause vibration energy accumulator, belongs to new energy field.It is equipped with a crossbeam on the left of square tubular shell and two wind deflectors, right side are equipped with upper beam and underbeam, is equipped with two left limit blocks on the left of enclosure interior front and rear wall, right side is equipped with two right limit blocks；Two sides are equipped with left oscillator to crossbeam up and down, and the end Zuo Zhenzi is equipped with left inertial mass, and right oscillator is equipped on upper underbeam, and right oscillator end is equipped with right inertial mass and ribbon；Left and right oscillator is all the cantilever beam as made of equal thickness substrate and piezoelectric piece bonding, and the substrate of Zuo Zhenzi is installed close to the piezoelectric patches of crossbeam installation, right oscillator close to upper beam or underbeam, and left oscillator is to inclination on the right side of shell, right oscillator to shell left side；Left oscillator free end when acting against on left limit block left oscillator deflection be less than its allowable value, right oscillator free end when acting against on right limit block right oscillator deflection be less than its allowable value；Line and the angle come between wind direction are 15 °~45 ° between the free endpoint of left oscillator and fixed endpoint.
Description
Technical field
The invention belongs to field of new energy technologies, and in particular to a kind of tunnel air-flow cause vibration energy accumulator.
Background technique
Tunnel has become the important component of current highway and railway network.To ensure that automobile and train can normally pacify
Full colleague, the real-time monitoring for realizing tunnel environment and passing vehicle need to install all kinds of instrument and equipments and lighting installation in tunnel,
Therefore also there is corresponding power supply facilities in tunnel.Such as use traditional cable power supply, the laying of cable and the difficulty of follow-up maintenance
Spend larger, higher cost；It is such as powered, because of limited battery life, need to often be replaced, use is extremely inconvenient, especially using battery
In remote mountain areas.
Summary of the invention
The present invention proposes that a kind of tunnel air-flow causes vibration energy accumulator, and the embodiment that the present invention uses is: shell for by roof,
The square tube that bottom wall, antetheca and rear wall are constituted is equipped with a crossbeam and two wind deflectors on the left of shell, be equipped on the right side of shell upper beam and
Underbeam, crossbeam, wind deflector, upper beam and underbeam both ends be separately fixed on antetheca and rear wall；Enclosure interior antetheca and rear wall
All through screw installation, there are two left limit block, right side, all through screw installation, there are two right limit blocks in left side；It is placed in antetheca and rear wall
On left limit block and right limit block respectively symmetrically be arranged in the two sides up and down of crossbeam center line；The two sides up and down of crossbeam all pass through
Pressing plate and screw are equipped with left oscillator, and the end Zuo Zhenzi is equipped with left inertial mass through screw, on upper beam and underbeam all through pressing plate and
Screw is equipped with right oscillator, and right oscillator end is equipped with right inertial mass and ribbon through screw；Left oscillator and right oscillator be all by etc.
Cantilever beam structure made of the substrate and piezoelectric piece bonding of thickness, the substrate of Zuo Zhenzi is close to crossbeam installation, the piezoelectricity of right oscillator
Piece is installed close to upper beam or underbeam, and left oscillator is to inclination on the right side of shell, right oscillator to shell left side；Two left oscillators it is outstanding
Arm section is respectively placed in the right side of the lower right and below the crossbeam wind deflector and left limit block of wind deflector and left limit block above crossbeam
Top, the cantilever part of two right oscillators are respectively placed in the lower right of the right limit block above crossbeam and the right limit of below the crossbeam
The upper right side of block.
Will have when vehicle quickly passes through from tunnel humorously at wind blows to left side on the right side of shell；Ribbon is by wind-force
Swing will be generated when effect, so that right oscillator cyclic bending be driven to deform；Meanwhile it can also be when blowing air over left oscillator and right oscillator
Whirlpool is generated behind left oscillator and right oscillator, continuously generating and falling off for whirlpool can make wind pressure at left and right sides of left oscillator and right oscillator
Alternately increase and reduce, so that left oscillator and right oscillator be forced to generate cyclic bending vibration；Left oscillator free end acts against a left side
The deflection of left oscillator is less than its allowable value, the change of right oscillator free end right oscillator when acting against on right limit block when on limited block
Shape amount is less than its allowable value；Increases and reduces to stress alternation when left oscillator and right oscillator cyclic bending deform on piezoelectric patches,
To convert mechanical energy into electric energy.
In the present invention, left oscillator is mainly to realize self-excited vibration power generation by the toll bar Xuan Jie formed with wind coupling
, it is suitable for high wind speed environment, and in the presence of preferably preferable established angle Q=15~45 ° of generating effect are made, established angle refers to left oscillator
Line and carry out the angle between wind direction between free endpoint and fixed endpoint；The function of wind deflector be improve wind deflector and left oscillator it
Between whirlpool formation condition in region and improve whirlpool intensity, and then improve the amplitude and generating capacity of left oscillator；Right oscillator master
To generate self-excited vibration power generation by the coupling of ribbon and wind, be suitable for low wind speed environments, and ribbon to the disturbance of wind also
The amplitude of left oscillator is helped to improve, the established angle of right oscillator is Q '=180-Q.
Before Zuo Zhenzi and right oscillator are installed in the present invention is pre-bending structure or flat construction under natural conditions.Left oscillator and
When right oscillator is pre-bending structure, substrate is placed on the inside of piezoelectric patches, i.e. substrate bending radius is less than piezoelectric patches bending radius, to be solved
Critical issue be to ensure that its bending radius is greater than the smallest bending radius allowable, avoids piezoelectric patches because of tensile stress in manufacturing process
It is excessive and damage；When left oscillator and right oscillator are flat construction, the critical issue to be solved is to ensure that Zuo Zhenzi and the right side in work
Oscillator deflection is less than its allowable value, piezoelectric patches is avoided to damage because compression is excessive；Left oscillator and right oscillator are pre-bending structure
When piezoelectric patches convex surface on minimum pre-bending radius allowable be
Bending deformation quantity allowable when left oscillator and right oscillator are flat construction isWherein H, L are respectively left oscillator or right oscillator
Overall thickness and jib-length, β=E1/E2, E1、E2The respectively elasticity modulus of substrate and piezoelectric patches,g31Respectively piezoresistive material
The dielectric constant and voltage constant of material,The respectively allowable tensile stress and permissible compression stress of piezoelectric material.
Advantage is with characteristic: structure is simple, threshold wind velocity is low, easily improves power generation and power supply capacity by array manner, can be real
The confession electricity operation of instrument and equipment in existing tunnel without chemical cell and is laid with cable；It is worked asynchronously using two generator units,
Wind speed is adaptable；Piezoelectric vibrator structure and installation parameter rationally, bend in one direction deformation, generating capacity is strong, high reliablity.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of energy accumulator in a preferred embodiment of the present invention；
Fig. 2 is the A-A view of Fig. 1；
Fig. 3 is the array schematic diagram of energy accumulator parallel connection in a preferred embodiment of the present invention；
Fig. 4 is the relation curve of output voltage and setting angle.
Specific embodiment
Shell a is the square tube being made of roof a1, bottom wall a2, antetheca a3 and rear wall a4, is equipped with one inside the left side of shell a
Upper beam a7 and underbeam a8, crossbeam a5, wind deflector a6, upper beam are equipped with inside the right side of a crossbeam a5 and two wind deflector a6, shell a
The both ends of a7 and underbeam a8 are separately fixed on antetheca a3 and rear wall a4；The left side of shell a inner front wall a3 and rear wall a4 all pass through
There are two left limit block b, right side, all through screw installation, there are two right limit block c for screw installation；It is placed on antetheca a3 and rear wall a4
Left limit block b and right limit block c respectively symmetrically be arranged in the two sides up and down of crossbeam a5 center line；The two sides up and down of crossbeam a5
Left oscillator e all is installed through pressing plate d and screw, the end Zuo Zhenzi e is equipped with left inertial mass f, upper beam a7 and underbeam a8 through screw
On right oscillator e ' all is installed through pressing plate d and screw, the end right oscillator e ' is equipped with right inertial mass f ' and ribbon g through screw；It is left
Oscillator e and right oscillator e ' is the cantilever beam structure as made of substrate e1 and piezoelectric patches the e2 bonding of equal thickness, the base of Zuo Zhenzi e
Plate e1 is installed close to crossbeam a5, the piezoelectric patches e2 of right oscillator e ' is installed close to upper beam a7 or underbeam a8, and Zuo Zhenzi e is to shell a's
Right side inclination, left side from right oscillator e ' to shell a；The cantilever part of two left oscillators is respectively placed in wind deflector above crossbeam
And left limit block lower right and below the crossbeam wind deflector and left limit block upper right side, the cantilever part difference of two right oscillators
It is placed in the upper right side of the lower right of the right limit block above crossbeam and the right limit block of below the crossbeam.
Will have when vehicle quickly passes through from tunnel humorously at wind blows to left side on the right side of shell a；Ribbon g by
Swing will be generated when wind-force acts on, so that right oscillator e ' cyclic bending be driven to deform；Meanwhile blowing air over left oscillator e and right oscillator
E ' Shi Haihui generates whirlpool in left oscillator e and right oscillator e ' below, and continuously generating and falling off for whirlpool can make left oscillator e and right vibration
Wind pressure alternately increases and reduces at left and right sides of sub- e ', so that left oscillator e and right oscillator e ' be forced to generate cyclic bending vibration；It is left
The deflection of the free end oscillator e left oscillator e when acting against on left limit block b is less than its allowable value, and the free end right oscillator e ' abuts against
The deflection of right oscillator e ' is less than its allowable value when on right limit block c；Left oscillator e and right oscillator e ' cyclic bending are pressed when deforming
Increase and reduce to stress alternation on electric piece e2, to convert mechanical energy into electric energy.
In the present invention, Zuo Zhenzi e is mainly to realize self-excited vibration power generation by the toll bar Xuan Jie formed with wind coupling
, it is suitable for high wind speed environment, and in the presence of preferably preferable established angle Q=15~45 ° of generating effect are made, established angle refers to left oscillator
Line and carry out the angle between wind direction between the free endpoint of e and fixed endpoint；The function of wind deflector a6 is to improve wind deflector a6 and a left side
Whirlpool formation condition between oscillator e in the B of region simultaneously improves whirlpool intensity, and then improves the amplitude and generating capacity of left oscillator e；
Right oscillator e ' mainly generates self-excited vibration power generation by the coupling of ribbon g and wind, is suitable for low wind speed environments, and ribbon g
The amplitude of left oscillator e is also contributed to the disturbance of wind, the established angle of right oscillator e ' is Q '=180-Q.
Before left oscillator e and right oscillator e ' is installed in the present invention is pre-bending structure or flat construction under natural conditions.Zuo Zhen
When sub- e and right oscillator e ' is pre-bending structure, substrate e1 is placed on the inside of piezoelectric patches e2, i.e. the bending radius of substrate e1 is less than piezoelectric patches
The bending radius of e2, the critical issue to be solved are to ensure that its bending radius is greater than the smallest bending radius allowable, avoids piezoelectricity
Piece e2 is damaged due to tensile stress is excessive in manufacturing process；When left oscillator e and right oscillator e ' is flat construction, the key to be solved is asked
Topic is to ensure that in work that left oscillator e and right oscillator e ' deflection are less than its allowable value, avoid piezoelectric patches e2 due to compression is excessive
Damage；Minimum pre-bending radius allowable when left oscillator e and right oscillator e ' is pre-bending structure on the convex surface piezoelectric patches e2 isIt is allowable when left oscillator e and right oscillator e ' is flat construction
Bending deformation quantity isWherein H, L are respectively a left side
Oscillator e or right oscillator e ' overall thickness and jib-length, β=E1/E2, E1、E2The respectively springform of substrate e1 and piezoelectric patches e2
Amount,g31The respectively dielectric constant and voltage constant of piezoelectric material,The respectively allowable tensile stress of piezoelectric material
And permissible compression stress.
Claims (1)
1. a kind of tunnel air-flow causes vibration energy accumulator, it is characterised in that: shell is the side being made of roof, bottom wall, antetheca and rear wall
Cylinder, the left side of enclosure interior is equipped with a crossbeam and two wind deflectors, right side are equipped with upper beam and underbeam, crossbeam, wind deflector, upper beam
And the both ends of underbeam are separately fixed on antetheca and rear wall；Two left limits are equipped on the left of enclosure interior antetheca and rear wall
Block, right side are equipped with two right limit blocks；The left limit block and right limit block being placed on antetheca and rear wall respectively symmetrically are arranged
In the two sides up and down of crossbeam center line；Crossbeam is equipped with left oscillator in two sides up and down, and the end Zuo Zhenzi is equipped with left inertial mass, upper beam and
Right oscillator is equipped on underbeam, right oscillator end is equipped with right inertial mass and ribbon；Left oscillator and right oscillator are all by equal thickness base
Cantilever beam structure made of plate and piezoelectric piece bonding, the substrate of Zuo Zhenzi is installed close to crossbeam, the piezoelectric patches of right oscillator is close to upper
Beam or underbeam installation, left oscillator is to inclination on the right side of shell, right oscillator to shell left side；The cantilever part of two left oscillators point
It is not placed in the upper right side of the lower right and below the crossbeam wind deflector and left limit block of wind deflector and left limit block above crossbeam, two
The cantilever part of right oscillator is respectively placed in the upper right of the lower right of the right limit block above crossbeam and the right limit block of below the crossbeam
Side；The deflection of left oscillator free end left oscillator when acting against on left limit block is less than its allowable value, and right oscillator free end abuts against
The deflection of right oscillator is less than its allowable value when on right limit block；The established angle of left oscillator is Q=15~45 °, and established angle is
Refer to line between the free endpoint of left oscillator and fixed endpoint and carrys out the angle between wind direction；Left oscillator and right oscillator be pre-bending structure or
Substrate is placed on the inside of piezoelectric patches when flat construction, Zuo Zhenzi and right oscillator are pre-bending structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710729378.9A CN107508494B (en) | 2017-08-17 | 2017-08-17 | A kind of tunnel air-flow cause vibration energy accumulator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710729378.9A CN107508494B (en) | 2017-08-17 | 2017-08-17 | A kind of tunnel air-flow cause vibration energy accumulator |
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| CN107508494A CN107508494A (en) | 2017-12-22 |
| CN107508494B true CN107508494B (en) | 2019-03-15 |
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| CN108910539A (en) * | 2018-07-02 | 2018-11-30 | 江苏理工学院 | A kind of energy-saving pneumatic conveying system with energy recovery function |
| CN110920535B (en) * | 2019-05-18 | 2022-12-09 | 浙江师范大学 | Self-powered vehicle tracking and collision alarming device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102832846A (en) * | 2012-09-01 | 2012-12-19 | 浙江师范大学 | Shaft power generator based on axial flexural vibration of piezoelectric vibrator of cantilever beam |
| CN203313094U (en) * | 2013-05-31 | 2013-11-27 | 浙江师范大学 | Piezoelectric cantilever beam generator for wind driven generator blade monitoring system |
| CN205283430U (en) * | 2016-01-02 | 2016-06-01 | 宁波大学 | Hard and soft composite beam wind power generation device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1350276A2 (en) * | 2000-10-25 | 2003-10-08 | Washington State University Research Foundation | Piezoelectric micro-transducers, methods of use and manufacturing methods for same |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102832846A (en) * | 2012-09-01 | 2012-12-19 | 浙江师范大学 | Shaft power generator based on axial flexural vibration of piezoelectric vibrator of cantilever beam |
| CN203313094U (en) * | 2013-05-31 | 2013-11-27 | 浙江师范大学 | Piezoelectric cantilever beam generator for wind driven generator blade monitoring system |
| CN205283430U (en) * | 2016-01-02 | 2016-06-01 | 宁波大学 | Hard and soft composite beam wind power generation device |
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Effective date of registration: 20240313 Address after: No. 9 Hisense Tianchen Road, High tech Zone, Jinan City, Shandong Province, 250000 Patentee after: Tianhong (Jinan) Intelligent Equipment Industry Research Co.,Ltd. Country or region after: China Address before: 321004 Zhejiang Normal University, 688 Yingbin Avenue, Wucheng District, Jinhua City, Zhejiang Province Patentee before: ZHEJIANG NORMAL University Country or region before: China |
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