CN103762892B - A kind of phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) based on torsional oscillation band gap - Google Patents
A kind of phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) based on torsional oscillation band gap Download PDFInfo
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- CN103762892B CN103762892B CN201410022603.1A CN201410022603A CN103762892B CN 103762892 B CN103762892 B CN 103762892B CN 201410022603 A CN201410022603 A CN 201410022603A CN 103762892 B CN103762892 B CN 103762892B
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Abstract
The present invention is to provide a kind of phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) based on torsional oscillation band gap.Comprise main shaft and strutbeam, strutbeam is installed piezoelectric and mass composition local oscillator unit, main shaft is installed the local oscillator unit composition photonic crystal structure that at least two row's structures are identical, the local oscillator unit composition photonic crystal structure of described main shaft being installed at least two row's structures identical refers to: equidistantly distribute with each local oscillator unit in row; The spacing of the local oscillator unit of each row is equal; On the cross section of main shaft, each composition territory oscillator unit equidistantly distributes.The present invention 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.Structure is simple, easily manufactured, and has carried out effectively widening to the twisting vibration of piezoelectric vibrating device generating frequency band, without the need to ACTIVE CONTROL, lower to the requirement of operational environment.Can be used for the energy supply of the microelectronic products such as the wireless senser of detection rotating machinery operation conditions.
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 utilizing phonon crystal twisting vibration bandgap principle in vibration noise environment.
Background technology
In recent years, along with the development of integrated circuit technique and micro-/nano electromechanical system technology, microelectronic product is widely used in the key areas such as wireless network node, environmental monitoring, automobile, building.The development of current microelectronic product is limited to the problem such as microminiaturization and life span of power supply device, and therefore the micro battery technology of Development of Novel is very important.Current, the chemical power source scheme majority that MEMS (micro electro mechanical system) adopts only is suitable for the short life cycle, and be difficult to the ever-increasing wireless network node of reply quantity, and based on the vibration generating device of piezoelectric effect, although the electric power of little rank can only be produced, can meet Micro Energy Lose system requirements, and its vibration source utilized is ubiquitous, possess advantages such as not limiting by place, activity is 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, at present conventional method has two kinds: one, initiatively auto-adjustment method, namely by self natural frequency of ACTIVE CONTROL adjusting device thus the change of the vibration frequency that conforms; Two, passive auto-adjustment method, is namely reached by the Blast Furnace Top Gas Recovery Turbine Unit (TRT) combination of multiple different natural frequencies and opens up wide band effect.Two kinds of methods all have shortcoming, and the former self power consumption is large, and size and the design cost of the latter's device all significantly increase." XI AN JIAOTONG UNIVERSITY Subject Index " February the 2nd in 2010 phase the 44th volume middle publication " frequency analysis of many cantilever beam piezoelectric vibrators and generator experimental research " in, propose a kind of many cantilever beam piezoelectric vibrators structure, namely passive self-adjusting category is belonged to, some different cantilever beam oscillators are connected on same matrix, thus widen the generating frequency band of Blast Furnace Top Gas Recovery Turbine Unit (TRT) to 56-65Hz, and improve energy output.But this structure is arranged on same matrix by different cantilever beams, 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 structure simple, easily manufactured, the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) based on torsional oscillation band gap of twisting vibration generating frequency band can be widened.
The object of the present invention is achieved like this:
It comprises main shaft and strutbeam, strutbeam is installed piezoelectric and mass composition local oscillator unit, main shaft is installed the local oscillator unit composition photonic crystal structure that at least two row's structures are identical, the local oscillator unit composition photonic crystal structure of described main shaft being installed at least two row's structures identical refers to: equidistantly distribute with each local oscillator unit in row; The spacing of the local oscillator unit of each row is equal; On the cross section of main shaft, each composition territory oscillator unit equidistantly distributes.
The present invention can also comprise:
1, main shaft is installed 3-4 and arrange the identical local oscillator unit composition photonic crystal structure of structure.
2, the cross section of main shaft is circular.
4, the cross section of main shaft is square.
5, described local oscillator unit comprises strutbeam, is bonded in the piezoelectric of strutbeam side, is bonded in the mass of spar end portions side.
6, described local oscillator unit comprises strutbeam, is bonded in the piezoelectric of strutbeam both sides, is bonded in the mass of spar end portions side.
7, described local oscillator unit comprises strutbeam, is bonded in the piezoelectric of strutbeam both sides, is bonded in the mass of spar end portions both sides.
The present invention mainly for microelectronic product electric power supply and design, utilize piezo technology to carry out power conversion, and adopt phonon crystal technology realize Blast Furnace Top Gas Recovery Turbine Unit (TRT) in vibration environment high-efficient wide-frequency generating.Its principle is the uniform some generating strutbeams (local oscillator) of girder section circumference, and equidistantly arrange some groups of such unit at axial direction, form locally resonant type phonon crystal axle construction, by dynamic absorber and the mutual coupling of local oscillator, produce the twisting vibration band gap of different center frequency and different bandwidth, the twisting vibration of rotating machinery is converted to electric energy, and final realization utilizes the wideband generating effect of twisting vibration.
The present invention is a kind of piezoelectric generating device utilizing mechanical twisting vibrating power-generation in operational environment.Scheme is by some identical cantilever beam oscillators, is equidistantly arranged on girder, forms locally resonant type photonic crystal structure.The twisting vibration band gap utilizing locally resonant type phonon crystal to produce, effectively widens the bandwidth of device generating frequency band, improves the generating efficiency of device.Compared with the cascaded structure in background technology, the present invention, mainly for mechanical twisting vibrating power-generation, widens in principle in band gap and has fundamental difference, possesses the feature that design cost is low, energy output is high simultaneously.
Overall structure of the present invention is simple, easily manufactured in a word, and has carried out effectively widening to the twisting vibration of piezoelectric vibrating device generating frequency band, without the need to ACTIVE CONTROL, lower to the requirement of operational environment.Can be used for the energy supply etc. of the microelectronic products such as the wireless senser of detection rotating machinery operation conditions.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of execution mode of the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) based on twisting vibration band gap of the present invention.
Fig. 2 is the structural representation of bimorph double quality blocks local oscillator.
Fig. 3 is the structural representation of the second execution mode of the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) based on twisting vibration band gap of the present invention.
Fig. 4 is the structural representation of the third execution mode of the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) based on twisting vibration band gap of the present invention.
Fig. 5 is bimorph single mass local oscillator schematic three dimensional views.
Fig. 6 is single piezoelectric patches single mass local oscillator schematic three dimensional views.
Embodiment
Below in conjunction with accompanying drawing citing, the present invention is described in more detail.
The composition of the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) based on torsional oscillation band gap of the present invention mainly comprises main shaft 1, strutbeam 2, mass 3, piezoelectric 4.Main shaft 1 is for be connected with the support in vibration environment or directly as support, material is silicon, metal or elastomeric material etc.; Strutbeam 2 material is silicon or metal; Mass 3 material is the metal such as copper, nickel; Piezoelectric 4 material is piezoelectric ceramic or piezoelectric membrane.Mass 3 waits reasonable process mode to be bonded on strutbeam 2 with piezoelectric 4 by boning, composition local oscillator, local oscillator is equidistantly arranged on main shaft 1 as unit by modes such as welding, embedding connections, thus composition phonon crystal axle construction, the surface of the piezoelectric in each local oscillator unit is parallel to the axis of main shaft.The physical dimension of local oscillator and main shaft etc. and the number of cycles of phonon crystal can adjust as required, and this device is used for storing or energy supply by rectifier process after mechanical twisting vibration is converted into electric energy.
Different according to the layout that the welding of local oscillator unit or embedding are mounted on main shaft, multiple embodiment of the present invention can be formed.
Composition graphs 1, the cross section of main shaft is circular, axis along main shaft installs 3 composition territory oscillator unit, 3 composition territory oscillator unit are equidistantly distribution on circular cross section, spacing in same row between each local oscillator unit is equal, spacing between the local oscillator unit of different row is also equal, and the structure of all local oscillator unit is identical.
Composition graphs 2,5 or 6, local oscillator unit can be the one in following three kinds of forms: what Fig. 2 provided is bimorph double quality blocks local oscillator structure, and namely local oscillator unit comprises strutbeam, is bonded in the piezoelectric of strutbeam both sides and is bonded in the mass of spar end portions both sides; What Fig. 5 provided is bimorph single mass local oscillator structure, and namely local oscillator unit comprises strutbeam, is bonded in the piezoelectric of strutbeam both sides and is bonded in the mass of spar end portions side; What Fig. 6 provided is single piezoelectric patches single mass local oscillator structure, namely local oscillator unit comprise strutbeam, be bonded in the piezoelectric of strutbeam side and, be bonded in the mass of spar end portions side.
Composition graphs 3 or Fig. 4, it is on the basis of the embodiment shown in Fig. 1, other two kinds of embodiments that the installation row changing the local oscillator unit on main shaft is formed.The phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) of what Fig. 3 provided is circumference uniform pair of oscillator; Fig. 4 is the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) of uniform four oscillators of circumference.
The shape of the cross section of main shaft can certainly be changed, such as, the cross section of main shaft is designed to square, equilateral triangle etc.
Following several factor is should be taken into account during actual use.
(1). girder and local oscillator structure.Environmentally Vibration Condition and equipment electrical demand, can change girder or local oscillator structure, as Fig. 3,4,5,6.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, the number of axial strutbeam can be increased, thus put forward high-octane utilance.
(2). the material of main shaft and local oscillator.Environmentally vibration frequency is different, the composition material of adjustment main shaft and local oscillator, thus the generating frequency band of equipment and external environment frequency are matched.
(3). the periodicity of phonon crystal.The number of cycles of phonon crystal can be adjusted according to physical dimension requirement, energy output size, frequency band range etc.
Claims (5)
1. the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) based on torsional oscillation band gap, comprise main shaft and strutbeam, strutbeam is installed piezoelectric and mass composition local oscillator unit, it is characterized in that: the cross section of main shaft is for circular, main shaft is installed the local oscillator unit composition photonic crystal structure that at least two row's structures are identical, the local oscillator unit composition photonic crystal structure of described main shaft being installed at least two row's structures identical refers to: equidistantly distribute with each local oscillator unit in row; The spacing of the local oscillator unit of each row is equal; On the cross section of main shaft, each composition territory oscillator unit equidistantly distributes; By dynamic absorber and the mutual coupling of local oscillator unit, produce the twisting vibration band gap of different center frequency and different bandwidth, the twisting vibration of rotating machinery is converted to electric energy.
2. the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) based on torsional oscillation band gap according to claim 1, is characterized in that: main shaft is installed 3-4 and arrange the identical local oscillator unit composition photonic crystal structure of structure.
3. the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) based on torsional oscillation band gap according to claim 1 and 2, is characterized in that: described local oscillator unit comprises strutbeam, is bonded in the piezoelectric of strutbeam side, is bonded in the mass of spar end portions side.
4. the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) based on torsional oscillation band gap according to claim 1 and 2, 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 spar end portions side.
5. the phonon crystal Blast Furnace Top Gas Recovery Turbine Unit (TRT) based on torsional oscillation band gap according to claim 1 and 2, 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 spar end portions both sides.
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| 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 |
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| CN106230313B (en) * | 2016-09-14 | 2018-01-02 | 长春工业大学 | The torsional mode piezoelectric generating device of the dijection head piece jet excitation of Internet of things node energy supply |
| 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 |
| CN112878115B (en) * | 2021-01-13 | 2022-11-29 | 北京铁科特种工程技术有限公司 | Intelligent aggregate and multi-frequency resonant network layer |
| CN113531022A (en) * | 2021-07-26 | 2021-10-22 | 天津大学 | Active control local resonance metamaterial device for low-frequency vibration isolation |
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| CN102723894A (en) * | 2012-05-28 | 2012-10-10 | 南京航空航天大学 | Rotary piezoelectric generation device |
| CN102931878A (en) * | 2012-10-26 | 2013-02-13 | 北京理工大学 | Multi-cantilever broadband MEMS (micro-electromechanical system) piezoelectric energy harvester |
| CN103227586A (en) * | 2013-04-12 | 2013-07-31 | 南京航空航天大学 | Branch cantilever beam vibration generator and power generation method thereof |
| CN203151398U (en) * | 2013-03-08 | 2013-08-21 | 苏州市职业大学 | Columnar multi direction piezoelectric power generation device |
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| JP2008527857A (en) * | 2005-01-07 | 2008-07-24 | トラスティーズ オブ ボストン ユニバーシティ | Nano mechanical oscillator |
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|---|---|---|---|---|
| CN102723894A (en) * | 2012-05-28 | 2012-10-10 | 南京航空航天大学 | Rotary piezoelectric generation device |
| CN102931878A (en) * | 2012-10-26 | 2013-02-13 | 北京理工大学 | Multi-cantilever broadband MEMS (micro-electromechanical system) piezoelectric energy harvester |
| CN203151398U (en) * | 2013-03-08 | 2013-08-21 | 苏州市职业大学 | Columnar multi direction piezoelectric power generation device |
| CN103227586A (en) * | 2013-04-12 | 2013-07-31 | 南京航空航天大学 | Branch cantilever beam vibration generator and power generation method thereof |
Cited By (2)
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| 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 |
| CN108649837B (en) * | 2018-06-12 | 2021-03-02 | 东北石油大学 | Piezoelectric energy storage device for oil well underground detection equipment |
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