CN103516258B - Windbell-type piezoelectric power generation device - Google Patents
Windbell-type piezoelectric power generation device Download PDFInfo
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- CN103516258B CN103516258B CN201310365863.4A CN201310365863A CN103516258B CN 103516258 B CN103516258 B CN 103516258B CN 201310365863 A CN201310365863 A CN 201310365863A CN 103516258 B CN103516258 B CN 103516258B
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- bar assembly
- piezoelectric
- flexible joint
- resonance
- windbell
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Abstract
A kind of Windbell-type piezoelectric power generation device, belongs to field of piezoelectric generation.This device is hung by multiple bar assembly array formula and forms, and bar assembly from top to bottom comprises at least two rigid rods (1) connected by flexible joint (2), at least attachment 1 piezoelectric unit (3) of flexible joint (2) sidewall.Multiple rigid rod (1) is connected to form bar assembly through multiple flexible joint (2) being attached with piezoelectric unit (3).The bar assembly of each suspension status has multiple crooked syntony frequency, when driving frequency and certain rank resonance frequency close to time, bar assembly will bend resonance.When flowing through the bar assembly on windward side, bar assembly produces bending and is producing Karman vortex street thereafter, and in array, adjacent vortex street has phase difference, and acting in conjunction, in bar assembly, excites bar assembly to produce resonance.The present invention utilizes array architecture to improve the utilance carrying out the energy of flow, utilizes resonance to improve System Computer photoelectric transformation efficiency, has the advantage that flow path direction is insensitive, flow rates is wide.
Description
Technical field
The invention belongs to wind power generation and hydroelectric field, particularly a kind of Windbell-type piezoelectric power generation device.
Background technology
Nature wind energy and water is utilized to generate electricity, for various outdoor facilities carries out the development trend that self-powered system meets current energy-saving and environmental protection, low-carbon (LC), have broad application prospects in fields such as industrial monitoring, intelligent transportation, intelligent grid, mine safety, environmental monitoring, safety home, health cares.
The Priya of the U.S. adopts piezoelectric device to manufacture and design a kind of small-sized wind power generator US11/252903.Can generate electricity under the wind drive of speed per hour 8 ~ 16 kilometers.The blade of generator is linked on cam, makes to produce vibration around the conglobate a series of bimorph of axle row, thus exports electric energy.The program has two shortcomings: one be piezoelectric bimorph rotate each time all with cam hits, friction, therefore produce wearing and tearing, cause energy loss, reduce useful life simultaneously.Two is when wind speed is lower, and blade and cam can not depart from, and piezoelectric bimorph keeps certain case of bending constant, now no longer generates electricity.Developed jointly by NEC TOKIN and Japanese Heardea, be equipped with adopt the new road of the Blast Furnace Top Gas Recovery Turbine Unit (TRT) of component of piezoelectric conversion be identified at Japan try out.Its principle is exactly the rolling by being placed in steel ball in cannelure, clashes into piezoelectric element and generates electricity.This device is arranged in the large vcehicular tunnel of the volume of traffic, and the air stream drives mark produced during vehicle travels can be utilized to rotate.Steel ball is arranged in the circular passage be separated into by component of piezoelectric conversion, and when mark is rotated, steel ball will move in the channel, clashes into the piezoelectric element at passage two ends, makes piezoelectric element output charge.The major defect of this scheme causing energy loss, reducing except useful life except rubbing, when car crosses continuously and produces strong wind, mark will high speed rotating, thus making steel ball be close to component of piezoelectric conversion motion, piezoelectric element can not get the pressure effect of alternation, just can not generate electricity.
Summary of the invention
The object of the present invention is to provide a kind of piezoelectric generating device efficient, applied widely utilizing piezoelectric effect to collect fluid dynamic energy.
A kind of Windbell-type piezoelectric power generation device, it is characterized in that: comprise suspension type bar assembly, described suspension type bar assembly from top to bottom comprises at least two rigid rods and the flexible joint for being connected adjacent rigid bar successively, and flexible joint sidewall at least adheres to a piezoelectric unit.
Described Windbell-type piezoelectric power generation device, is characterized in that: described suspension type bar assembly is more than 1 group, and many group suspension type bar assemblies hang on bracing frame with array way.
For the weakness of prior art, structure of the present invention is intended to utilize Karman vortex street and mesomerism, improve the utilance, the raising System Computer photoelectric transformation efficiency that carry out the energy of flow, realize high power, high efficiency with simple structure, the problems such as solution incoming flow orientation-sensitive, flow rates are narrow.Technical characteristic comprises: the bar assembly of each suspension status has multiple crooked syntony frequency, when driving frequency and bar assembly rank resonance frequency close to time, bar assembly will bend resonance; When flowing through the bar assembly on windward side, bar assembly produces bending and is producing Karman vortex street thereafter, and in array, adjacent vortex street has phase difference, and acting in conjunction, in bar assembly, excites bar assembly to produce resonance; Array architecture makes the change of flow path direction less on generating capacity impact, and the uneven distribution of speed of incoming flow and change make array flow field be tending towards disorderly in the height direction, increase the frequency content of fluid matasomatism, are more conducive to exciting of bar element resonance; The contained unit number of the quantity of bar assembly, arrangement mode and bar assembly itself can be configured according to the fluid mobility status of application places, simple and convenient assembly.
Accompanying drawing explanation
Fig. 1 is the front view of piezoelectric generating device of the present invention;
Fig. 2 is piezoelectric generating device of the present invention motion state under fluid matasomatism;
Fig. 3 is that the present invention's each suspension type bar assembly hangs schematic diagram of lining up;
Fig. 4 is that the present invention's each suspension type bar assembly hangs schematic diagram of lining up;
Fig. 5 is that the present invention's each suspension type bar assembly hangs schematic diagram of lining up;
Number in the figure title: 1, rigid rod, 2, flexible joint, 3, piezoelectric ceramic piece.
Embodiment
Composition graphs 1 and Fig. 2, Windbell-type piezoelectric power generation device of the present invention is made up of windbell type bar assembly, described windbell type bar assembly comprises two rigid rods 1, flexible joint 2 and piezoelectric ceramic piece 3, wherein flexible joint 2 is for connecting two sections of rigid rods 1, piezoelectric ceramic piece 3 is pasted in flexible joint 2, and ensures that flexible joint 2 place can more easily bend.
Each group suspension type bar assembly of Windbell-type piezoelectric power generation device of the present invention can be in series through flexible joint 2 by least 2 sections of rigid rods 1, and the quantity of the piezoelectric ceramic piece 3 that flexible joint 2 is pasted is at least 1.The rigid rod be in series through flexible joint 2 of varying number can be selected according to varying environment flow rate and scope, form 1 group of suspension type bar assembly, suspension type bar assembly is hung on bracing frame with parallel way by certain geometrical relationship.
Composition graphs 3 and Fig. 4, the present invention's each suspension type bar assembly hangs lines up, as windbell, when there being fluid to flow into, the suspension type bar assembly of windward side produces to bend and produces Karman vortex street simultaneously, make flexible joint 2 wherein produce flexural vibrations with vortex-shedding frequency effect in suspension type bar assembly thereafter, force the piezoelectric ceramic piece 3 adhered on it to produce piezoelectric effect output charge, completing fluid can to electric transformation of energy.
Composition graphs 5, if alternately shedding frequence and the suspension type bar assembly rank crooked syntony frequency of vortex street are close, there will be resonance, piezoelectric ceramic piece 3 deflection will significantly improve, and improve the power output of Blast Furnace Top Gas Recovery Turbine Unit (TRT).Due to the arrangement of suspension type bar assembly array formula, the vortex street in array inside can interact, and produces the frequency content of more horn of plenty, and the chance producing resonance in array is greatly increased, and utilance and the electromechanical conversion efficiency of fluid energy also greatly increase.
Claims (2)
1. a Windbell-type piezoelectric power generation device, it is characterized in that: comprise suspension type bar assembly, described suspension type bar assembly from top to bottom comprises at least two rigid rods (1) and the flexible joint (2) for being connected adjacent rigid bar (1) successively, and flexible joint (2) sidewall at least adheres to a piezoelectric unit (3).
2. Windbell-type piezoelectric power generation device according to claim 1, is characterized in that: described suspension type bar assembly is more than 1 group, and many group suspension type bar assemblies hang on bracing frame with array way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310365863.4A CN103516258B (en) | 2013-08-21 | 2013-08-21 | Windbell-type piezoelectric power generation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310365863.4A CN103516258B (en) | 2013-08-21 | 2013-08-21 | Windbell-type piezoelectric power generation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103516258A CN103516258A (en) | 2014-01-15 |
| CN103516258B true CN103516258B (en) | 2015-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310365863.4A Expired - Fee Related CN103516258B (en) | 2013-08-21 | 2013-08-21 | Windbell-type piezoelectric power generation device |
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| CN (1) | CN103516258B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109856370B (en) * | 2019-04-10 | 2021-08-24 | 吉林建筑大学 | Big wind zone land resource current situation monitoring system based on self-energy supply of piezoelectric material |
| CN110224635B (en) * | 2019-06-05 | 2020-12-25 | 郑州大学 | Multi-direction energy harvesting device |
| CN111355403B (en) * | 2020-03-17 | 2023-04-28 | 宁波大学 | Jellyfish-shaped piezoelectric friction electric composite ocean mechanical energy collector |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7239066B2 (en) * | 2004-06-17 | 2007-07-03 | Par Technologies, Llc | Piezoelectric generators and methods of operating same |
| US8294336B2 (en) * | 2005-10-18 | 2012-10-23 | Board Of Regents, The University Of Texas Systems | Piezoelectric windmill apparatus |
| CN202586806U (en) * | 2012-06-04 | 2012-12-05 | 浙江师范大学 | Miniature wind energy gatherer |
| CN103166504B (en) * | 2013-04-03 | 2015-07-29 | 重庆大学 | A kind of collision type miniature energy gathers array structure |
| CN203457076U (en) * | 2013-08-21 | 2014-02-26 | 南京航空航天大学 | Windbell type piezoelectric power generation device |
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- 2013-08-21 CN CN201310365863.4A patent/CN103516258B/en not_active Expired - Fee Related
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| CN103516258A (en) | 2014-01-15 |
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