CN103746603A - Photonic crystal power generating device based on longitudinal vibration band gap - Google Patents
Photonic crystal power generating device based on longitudinal vibration band gap Download PDFInfo
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Abstract
The invention provides a photonic crystal power generating device based on a longitudinal vibration band gap. The photonic crystal power generating device comprises a main beam and branched beams, wherein the strut beams are provided with piezoelectric materials and mass blocks for forming local-area vibrator units, and at least two rows of local-area vibrator units with the same structure are arranged on the main beam for forming a photonic crystal structure, the surface of each piezoelectric material on each local-area vibrator unit is vertical to the axis of the main beam, the structure that the at least two rows of local-area vibrator units with the same structure are arranged on the main beam is characterized in that the local-area vibrator units in the same row are distributed at equal intervals, the distance between the local-area vibrator units in each row are equal, and the local-area vibrator units of each row on the cross section of the main beam are distributed at equal intervals. Wideband efficient power generation in a vibrating environment is realized by adopting a photonic crystal technology. The photonic crystal power generating device is simple in integral structure and convenient to manufacture, and has lower requirement on the working environment. The longitudinal vibration power generation frequency band of a piezoelectric vibrating device is effectively widened, and active control is not needed. The photonic crystal power generating device can be used for energy supply of micro-electronics products, such as a wireless sensor.
Description
Technical field
What the present invention relates to is a kind of Blast Furnace Top Gas Recovery Turbine Unit (TRT), is specifically a kind ofly applicable to the wideband vibration generating device based on phonon crystal extensional vibration band gap principle in vibration noise environment.
Background technology
In recent years, along with the development of integrated circuit technique and micro-/receive Mechatronic Systems technology, microelectronic product is widely used in the key areas such as wireless network node, environmental monitoring, automobile, building.The at present development of microelectronic product is limited to the problems such as the microminiaturization of power supply device and life span, so micro-power technology of Development of Novel is very important.Current, the chemical power source scheme majority that MEMS (micro electro mechanical system) adopts is only suitable for the short life cycle, and be difficult to tackle the ever-increasing wireless network node of quantity, and vibration generating device based on piezoelectric effect, although can only produce little other electric power of level, can meet micro-power consumption system requirement, and its vibration source utilizing be ubiquitous, possess and be not subject to the advantages such as place restriction, activity be strong, therefore adopt piezoelectricity oscillating generating set can solve the self-energy supply problem of MEMS (micro electro mechanical system).
The more cantilever beam electrification structure of current research faces the problem of " resonance frequency is single, and generating efficiency is low ".For improving generating efficiency, widen generating frequency band, conventional method has two kinds at present: one, self-adjusting method initiatively, the variation of vibration frequency thereby self natural frequency by ACTIVE CONTROL adjusting device conforms; Two, passive self-adjusting method, i.e. the combination of the Blast Furnace Top Gas Recovery Turbine Unit (TRT) by a plurality of different natural frequencies reaches opens up wide band effect.Two kinds of methods all have shortcoming, and the former self consumes energy large, and the size of the latter's device and design cost all significantly increase.In " frequency analysis of many cantilever beam piezoelectric vibrators and the generator experimental research " of the middle publication of < < XI AN JIAOTONG UNIVERSITY Subject Index > > the 2nd phase the 44th volume February in 2010, a kind of many cantilever beam piezoelectric vibrators structure has been proposed, belong to passive self-adjusting category, some different cantilever beam oscillators are connected on same matrix, thereby the generating frequency band of Blast Furnace Top Gas Recovery Turbine Unit (TRT) is widened to 56-65Hz, and improved energy output.But this structure is that different cantilever beams is arranged on same matrix, the design of cantilever beam is complicated, and production cost is high.
Summary of the invention
The object of the present invention is to provide a kind of simple in structurely, easily manufactured, can widen the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) based on longitudinal vibration band gap of width of generating frequency band.
The object of the present invention is achieved like this:
It comprises girder and strutbeam, piezoelectric and mass are installed on strutbeam and are formed local oscillator unit, the at least two identical local oscillator unit of row's structure are installed on girder and are formed phonon crystal structure, the surface of the piezoelectric on each local oscillator unit is perpendicular to the axis of girder; The local oscillator unit composition phonon crystal structure that at least two row's structures are identical is installed on described girder to be referred to: with each local oscillator unit in row, equidistantly distribute; The spacing of each row's local oscillator unit equates; On the cross section of girder, each oscillator unit, composition territory equidistantly distributes.
The present invention can also comprise:
1, the identical local oscillator unit of 2-5 row structure is installed on girder and is formed phonon crystal structure.
2, the local oscillator unit that 2 row's structures are identical is installed on girder and is formed phonon crystal structure, the cross section of girder is square.
3, the local oscillator unit that 3 row's structures are identical is installed on girder and is formed phonon crystal structure, the cross section of girder is equilateral triangle.
4, the local oscillator unit that 4 row's structures are identical is installed on girder and is formed phonon crystal structure, the cross section of girder is square.
5, the local oscillator unit that 5 row's structures are identical is installed on girder and is formed phonon crystal structure, the cross section of girder is regular pentagon.
6, described local oscillator unit comprises strutbeam, is bonded in the piezoelectric of strutbeam one side, is bonded in the mass of beam end one side.
7, described local oscillator unit comprises strutbeam, is bonded in the piezoelectric of strutbeam both sides, is bonded in the mass of beam end one side.
8, described local oscillator unit comprises strutbeam, is bonded in the piezoelectric of strutbeam both sides, is bonded in the mass of a beam end both sides.
The present invention designs for the electric power supply of microelectronic product, utilizes piezo technology to carry out power conversion, and adopts phonon crystal technology to realize the high-efficient wide-frequency generating of Blast Furnace Top Gas Recovery Turbine Unit (TRT) in vibration environment.Its principle is equidistantly to arrange some generating strutbeams (local oscillator) along girder length direction, form local resonance type phonon crystal structure, by the dynamic absorber of local oscillator and mutual coupling, produce the extensional vibration band gap of different center frequency and different bandwidth, in band gap frequency range, generating strutbeam will produce high vibration, thereby the extensional vibration of propagating along girder length direction is converted to electric energy, the final wideband generating effect of utilizing extensional vibration that realizes.
The present invention is a kind of piezoelectric generating device that utilizes extensional vibration generating in environment.Scheme is mainly utilized local resonance type phonon crystal technology, the periodic structure of equidistantly arranging and forming by some identical " generating strutbeams " on girder, produce extensional vibration band gap, vibration in band gap is converted to electric energy, and then effectively widen the width of device generating frequency band, improve generating efficiency.Generating frequency band of the present invention is widened the structures that people proposes such as principle and Xie Tao and is had basic differently, and does not need each strutbeam to design one by one, has reduced design cost, can improve energy output simultaneously.
Overall structure of the present invention is simple, easily manufactured in a word, and the extensional vibration generating frequency band of piezoelectric vibrating device has been carried out effectively widening, without ACTIVE CONTROL, lower to the requirement of operational environment.Can be used for the energy supply of the microelectronic products such as wireless senser etc.
Accompanying drawing explanation
Fig. 1 is the basic structure schematic diagram of the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) based on longitudinal vibration band gap.
Fig. 2 is the structural representation figure of bimorph single mass local oscillator.
Fig. 3 is the structural representation of the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) of triangular-section girder.
Fig. 4 is the structural representation of the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) of square-section girder.
Fig. 5 is the structural representation of the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) of pentagonal section girder.
Fig. 6 is single piezoelectric patches single mass local oscillator schematic three dimensional views.
Fig. 7 is bimorph double quality blocks local oscillator schematic three dimensional views.
Embodiment
Below in conjunction with accompanying drawing, for example the present invention is described in more detail.
Phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) based on longitudinal vibration band gap of the present invention mainly comprises girder 1, mass 2, strutbeam 3, piezoelectric 4.Girder 1 is for being connected with the support of vibration environment, or directly as support, material is silicon, metal or elastomeric material etc.; Mass 2 materials are the metals such as copper, nickel; Strutbeam 3 materials are that material is silicon; Piezoelectric 4 materials are piezoelectric ceramic or piezoelectric membrane.Mass 2 waits reasonable process mode to be bonded on strutbeam 3 with piezoelectric 4 by bonding, form local oscillator, local oscillator is arranged on girder 1 by mode cycles such as welding, embedding connections as unit, thereby form phonon crystal structure, and the surface of the piezoelectric on each local oscillator unit is perpendicular to the axis of girder.The physical dimension of local oscillator and girder etc. and the number of cycles of phonon crystal can be adjusted as required, and this device is converted into extensional vibration after electric energy, by rectifier, process for storing or energy supply.
The shape of cross section that is mounted on layout on main shaft and main shaft according to local oscillator element solder or embedding is different, can form multiple embodiment of the present invention.
In conjunction with Fig. 1, the cross section of main shaft is square, axial installation 2 oscillator unit, composition territory along main shaft, 2 oscillator unit, composition territories are symmetrically distributed in square cross section, spacing in same row between each local oscillator unit equates, spacing between different rows' local oscillator unit is also equal, and the structure of all local oscillators unit is identical, and the surface of the piezoelectric on each local oscillator unit is perpendicular to the axis of girder.
In conjunction with Fig. 3, it is the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) of a kind of triangular-section girder.The cross section of main shaft is equilateral triangle, axial installation 3 oscillator unit, composition territory along main shaft, 3 composition territory oscillator cell distribution are on equilateral triangle, spacing in same row between each local oscillator unit equates, spacing between different rows' local oscillator unit also equates, the structure of all local oscillators unit is identical, and the surface of the piezoelectric on each local oscillator unit is perpendicular to the axis of girder.
In conjunction with Fig. 4, it is the structural representation of the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) of a kind of square-section girder.The cross section of main shaft is square, axial installation 4 oscillator unit, composition territory along main shaft, 4 composition territory oscillator cell distribution are in pros, spacing in same row between each local oscillator unit equates, spacing between different rows' local oscillator unit also equates, the structure of all local oscillators unit is identical, and the surface of the piezoelectric on each local oscillator unit is perpendicular to the axis of girder.
In conjunction with Fig. 5, it is the structural representation of the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) of a kind of pentagonal section girder.The cross section of main shaft is regular pentagon, axial installation 5 oscillator unit, composition territory along main shaft, 5 composition territory oscillator cell distribution are on regular pentagon, spacing in same row between each local oscillator unit equates, spacing between different rows' local oscillator unit also equates, the structure of all local oscillators unit is identical, and the surface of the piezoelectric on each local oscillator unit is perpendicular to the axis of girder.
In conjunction with Fig. 2,6 or 7, local oscillator unit can be a kind of in following three kinds of forms: what Fig. 7 provided is bimorph double quality blocks local oscillator structure, the mass that local oscillator unit comprises strutbeam, is bonded in the piezoelectric of strutbeam both sides and is bonded in a beam end both sides; What Fig. 2 provided is bimorph single mass local oscillator structure, the mass that local oscillator unit comprises strutbeam, is bonded in the piezoelectric of strutbeam both sides and is bonded in beam end one side; What Fig. 6 provided is single piezoelectric patches single mass local oscillator structure, local oscillator unit comprise strutbeam, be bonded in strutbeam one side piezoelectric and, be bonded in the mass of beam end one side.
During actual use, should be taken into account following several factor.
(1). girder and local oscillator structure.According to ambient vibration situation and equipment electric weight demand, can change girder or local oscillator structure.In order to improve, energy output can change bimorph into single piezoelectric patches, single mass changes double quality blocks into; When extraneous vibration is comparatively violent, can increases the number of axial strutbeam, thereby put forward high-octane utilance.
(2). the material of main shaft and local oscillator.Different according to ambient vibration frequency, adjust the composition material of main shaft and local oscillator, thereby the generating frequency band of equipment and external environment frequency are matched.
(3). the periodicity of phonon crystal.According to physical dimension requirement, energy output size, frequency band range etc., can adjust the number of cycles of phonon crystal.
Claims (9)
1. the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) based on longitudinal vibration band gap, it comprises girder and strutbeam, piezoelectric and mass are installed on strutbeam and are formed local oscillator unit, it is characterized in that: at least two identical local oscillator unit of row's structure are installed on girder and are formed phonon crystal structure, the surface of the piezoelectric on each local oscillator unit is perpendicular to the axis of girder; The local oscillator unit composition phonon crystal structure that at least two row's structures are identical is installed on described girder to be referred to: with each local oscillator unit in row, equidistantly distribute; The spacing of each row's local oscillator unit equates; On the cross section of girder, each oscillator unit, composition territory equidistantly distributes.
2. the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) based on longitudinal vibration band gap according to claim 1, is characterized in that: the identical local oscillator unit of 2-5 row structure is installed on girder and is formed phonon crystal structure.
3. the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) based on longitudinal vibration band gap according to claim 2, is characterized in that: the local oscillator unit that 2 row's structures are identical is installed on girder and is formed phonon crystal structure, the cross section of girder is square.
4. the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) based on longitudinal vibration band gap according to claim 2, is characterized in that: the local oscillator unit that 3 row's structures are identical is installed on girder and is formed phonon crystal structure, the cross section of girder is equilateral triangle.
5. the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) based on longitudinal vibration band gap according to claim 2, is characterized in that: the local oscillator unit that 4 row's structures are identical is installed on girder and is formed phonon crystal structure, the cross section of girder is square.
6. the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) based on longitudinal vibration band gap according to claim 2, is characterized in that: the local oscillator unit that 5 row's structures are identical is installed on girder and is formed phonon crystal structure, the cross section of girder is regular pentagon.
7. the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) based on longitudinal vibration band gap described in any one according to claim 3-6, is characterized in that: described local oscillator unit comprises strutbeam, is bonded in the piezoelectric of strutbeam one side, is bonded in the mass of beam end one side.
8. the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) based on longitudinal vibration band gap described in any one according to claim 3-6, is characterized in that: described local oscillator unit comprises strutbeam, is bonded in the piezoelectric of strutbeam both sides, is bonded in the mass of beam end one side.
9. the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) based on longitudinal vibration band gap described in any one according to claim 3-6, is characterized in that: described local oscillator unit comprises strutbeam, is bonded in the piezoelectric of strutbeam both sides, is bonded in the mass of a beam end both sides.
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Cited By (11)
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| CN105281599A (en) * | 2015-11-27 | 2016-01-27 | 国网江西省电力科学研究院 | Sound energy collector by adopting phonon crystal and electromechanical Helmholtz resonator |
| CN107181427A (en) * | 2017-06-29 | 2017-09-19 | 广东顺德中山大学卡内基梅隆大学国际联合研究院 | Piezoelectric energy collector and generating equipment |
| CN108566116A (en) * | 2018-01-26 | 2018-09-21 | 扬州大学 | A kind of ground energy collecting device based on piezoelectric effect |
| CN108649837A (en) * | 2018-06-12 | 2018-10-12 | 东北石油大学 | A kind of piezoelectric energy-storage device for oil well detection device |
| CN109067241A (en) * | 2018-08-07 | 2018-12-21 | 辽宁工程技术大学 | A kind of electric vehicle terminal continuation of the journey system collected based on piezoelectric vibration energy |
| CN110138272A (en) * | 2019-05-16 | 2019-08-16 | 安徽理工大学 | A kind of non-linear three-dimensional part Whole frequency band piezoelectricity low amplitude vibration energy accumulator |
| CN110793620A (en) * | 2019-11-28 | 2020-02-14 | 长安大学 | Noise detection device and detection method |
| CN110912456A (en) * | 2019-12-09 | 2020-03-24 | 上海电力大学 | Vibration energy absorption power generation device of industrial equipment |
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| CN112735367A (en) * | 2020-12-06 | 2021-04-30 | 北京工业大学 | Piezoelectric phonon crystal beam for actively adjusting vibration and wave propagation characteristics |
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| CN101997444A (en) * | 2009-08-14 | 2011-03-30 | 扬州博达电气设备有限公司 | Novel piezoelectric energy recovery device |
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| CN105281599A (en) * | 2015-11-27 | 2016-01-27 | 国网江西省电力科学研究院 | Sound energy collector by adopting phonon crystal and electromechanical Helmholtz resonator |
| CN107181427A (en) * | 2017-06-29 | 2017-09-19 | 广东顺德中山大学卡内基梅隆大学国际联合研究院 | Piezoelectric energy collector and generating equipment |
| CN108566116A (en) * | 2018-01-26 | 2018-09-21 | 扬州大学 | A kind of ground energy collecting device based on piezoelectric effect |
| CN108649837B (en) * | 2018-06-12 | 2021-03-02 | 东北石油大学 | Piezoelectric energy storage device for oil well underground detection equipment |
| CN108649837A (en) * | 2018-06-12 | 2018-10-12 | 东北石油大学 | A kind of piezoelectric energy-storage device for oil well detection device |
| CN109067241A (en) * | 2018-08-07 | 2018-12-21 | 辽宁工程技术大学 | A kind of electric vehicle terminal continuation of the journey system collected based on piezoelectric vibration energy |
| CN110138272A (en) * | 2019-05-16 | 2019-08-16 | 安徽理工大学 | A kind of non-linear three-dimensional part Whole frequency band piezoelectricity low amplitude vibration energy accumulator |
| CN110793620A (en) * | 2019-11-28 | 2020-02-14 | 长安大学 | Noise detection device and detection method |
| CN110793620B (en) * | 2019-11-28 | 2024-01-26 | 长安大学 | Noise detection device and detection method |
| CN110912456A (en) * | 2019-12-09 | 2020-03-24 | 上海电力大学 | Vibration energy absorption power generation device of industrial equipment |
| CN111064340A (en) * | 2020-01-15 | 2020-04-24 | 山东理工大学 | Wind-induced vibration electromagnetic power generation device based on full wind direction environment excitation |
| CN111064340B (en) * | 2020-01-15 | 2022-04-19 | 山东理工大学 | Wind-induced vibration electromagnetic power generation device based on full wind direction environment excitation |
| CN112735367A (en) * | 2020-12-06 | 2021-04-30 | 北京工业大学 | Piezoelectric phonon crystal beam for actively adjusting vibration and wave propagation characteristics |
| CN112735367B (en) * | 2020-12-06 | 2023-04-25 | 北京工业大学 | Piezoelectric phonon crystal beam for actively adjusting vibration and wave propagation characteristics |
| CN113852294A (en) * | 2021-08-29 | 2021-12-28 | 北京工业大学 | Vibration-damping energy-harvesting dual-function metamaterial beam |
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Application publication date: 20140423 |