CN103516258A - Windbell-type piezoelectric power generation device - Google Patents
Windbell-type piezoelectric power generation device Download PDFInfo
- Publication number
- CN103516258A CN103516258A CN201310365863.4A CN201310365863A CN103516258A CN 103516258 A CN103516258 A CN 103516258A CN 201310365863 A CN201310365863 A CN 201310365863A CN 103516258 A CN103516258 A CN 103516258A
- Authority
- CN
- China
- Prior art keywords
- windbell
- rod assemblies
- power generation
- generation device
- piezoelectric power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention relates to a windbell-type piezoelectric power generation device and belongs to the field of piezoelectric power generation. The windbell-type piezoelectric power generation device is formed by hanging a plurality of rod assemblies in an array-type mode; each rod assembly includes at least two rigid rods (1) from top to bottom, the rigid rods (1) are connected through flexible joints (2), and the side wall of each flexible joint (2) is at least provided with one piezoelectric unit (3) in an attached mode. The rigid rods (1) are connected through the flexible joints (2) provided with the piezoelectric units (3) in the attached mode to form the rod assemblies. Each rod assembly in a hanging state has a plurality of bending resonant frequencies, and the rod assemblies will perform bending resonance when a driving frequency is close to a certain resonant frequency; when incoming flow passes by the rod assemblies on a windward side, the rod assemblies bend, Karman vortex streets are generated behind the rod assemblies, and the adjacent Karman vortex streets in the array have phase differences which jointly act on the rod assemblies and excite the rod assemblies to generate resonance. According to the windbell-type piezoelectric power generation device, the utilization rate of incoming flow kinetic energy is improved by utilizing the array-type structure, and the electromechanical conversion efficiency of the system is improved by utilizing the resonance; the windbell-type piezoelectric power generation device has the advantages of being insensitive in incoming flow direction and wide in flow rate range.
Description
Technical field
The invention belongs to wind power generation and hydroelectric power generation field, particularly a kind of windbell type piezoelectric generating device.
Background technology
Utilize nature wind energy and water to generate electricity, for various outdoor facilities carry out the development trend that self-powered system meets current energy-saving and environmental protection, low-carbon (LC), in fields such as industrial monitoring, intelligent transportation, intelligent grid, mine safety, environmental monitoring, safety home, health cares, have broad application prospects.
The Priya of the U.S. adopts piezoelectric device to manufacture and design a kind of small-sized wind power generator US11/252903.Can under the wind drive of 8～16 kilometers of speed per hours, generate electricity.The blade of generator is linked on cam, makes to produce vibration around the conglobate a series of bimorphs of axle row, thus output electric energy.This scheme has two shortcomings: the one, and piezoelectric bimorph rotates each time all and collides with cam, and therefore friction produces wearing and tearing, causes energy loss, reduces useful life simultaneously.The 2nd, when wind speed is lower, blade and cam can not depart from, and piezoelectric bimorph keeps certain case of bending constant, now no longer generating.The new road of being developed jointly, be equipped with the Blast Furnace Top Gas Recovery Turbine Unit (TRT) that adopts component of piezoelectric conversion by NEC TOKIN and Japanese Heardea is identified at Japan's trial run.Its principle is exactly by being placed in the rolling of steel ball in cannelure, clashes into piezoelectric element and generates electricity.This device is arranged in the vcehicular tunnel that the volume of traffic is large, the air stream drives sign rotation producing in the time of can utilizing automobile to cross.Steel ball is arranged in the circular passage being separated into by component of piezoelectric conversion, and when sign is rotated, steel ball will move in passage, clashes into the piezoelectric element at passage two ends, makes piezoelectric element output charge.The major defect of this scheme causes energy loss, reduces useful life except rubbing, when car crosses and produce strong wind time sign will high speed rotating continuously, thereby make steel ball be close to component of piezoelectric conversion motion, piezoelectric element can not get the pressure-acting 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 that utilizes piezoelectric effect to collect fluid dynamic energy.
A kind of windbell type piezoelectric generating device, it is characterized in that: comprise suspension type bar assembly, described suspension type bar assembly from top to bottom comprise successively at least two rigid rods with for being connected the flexible joint of adjacent rigid bar, flexible joint sidewall at least adheres to a piezoelectric unit.
Described windbell type piezoelectric generating device, is characterized in that: described suspension type bar assembly surpasses 1 group, organizes suspension type bar assembly more and hangs on bracing frame with array way.
Weakness for prior art, structure of the present invention is intended to utilize Karman vortex street and mesomerism, improve the energy of flow utilance, improve System Computer photoelectric transformation efficiency, with simple structure, realize high power, high efficiency, solve the problems such as incoming flow orientation-sensitive, flow rates be narrow.Technical characterictic comprises: the bar assembly of each suspension status has a plurality of crooked syntony frequencies, when driving frequency and bar assembly rank resonance frequency approach, and the resonance that will bend of bar assembly; Incoming flow is during through bar assembly on windward side, and bar assembly produces the crooked Karman vortex street that also produces thereafter, and in array, adjacent vortex street has phase difference, and acting in conjunction, in bar assembly, excites bar assembly to produce resonance; The variation that array architecture makes flow path direction is less on generating capacity impact, and in short transverse, the uneven distribution of speed of incoming flow and variation make array flow field be tending towards disorderly, increase the frequency content of fluid effect, are more conducive to exciting of bar assembly 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 effect;
Fig. 3 is that each root suspension type bar assembly of the present invention hangs the schematic diagram of lining up;
Fig. 4 is that each root suspension type bar assembly of the present invention hangs the schematic diagram of lining up;
Fig. 5 is that each root suspension type bar assembly of the present invention hangs the schematic diagram of lining up;
Number in the figure title: 1, rigid rod, 2, flexible joint, 3, piezoelectric ceramic piece.
Embodiment
In conjunction with Fig. 1 and Fig. 2, windbell type piezoelectric generating device of the present invention is by windbell type bar module composition, 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 1,3 of piezoelectric ceramic pieces are pasted in flexible joint 2, and guarantee that flexible joint 2 places can more easily bend.
Each group suspension type bar assembly of windbell type piezoelectric generating 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.Can form 1 group of suspension type bar assembly according to the rigid rod being in series through flexible joint 2 of varying environment flow rate and scope selection varying number, suspension type bar assembly is hung on bracing frame with parallel way by certain geometrical relationship.
In conjunction with Fig. 3 and Fig. 4, each root suspension type bar assembly of the present invention hangs lines up, as windbell, when having fluid to flow into, the suspension type bar assembly of windward side produces bending and produces Karman vortex street simultaneously, with vortex-shedding frequency effect, in suspension type bar assembly thereafter, make flexible joint 2 wherein produce flexural vibrations, force the piezoelectric ceramic piece 3 adhering on it to produce piezoelectric effect output charges, completing fluid can be to electric transformation of energy.
In conjunction with Fig. 5, if alternately shedding frequence and the suspension type bar assembly rank crooked syntony frequency of vortex street are close, there will be resonance, potsherd 3 deflections will significantly improve, and improve the power output of Blast Furnace Top Gas Recovery Turbine Unit (TRT).Because suspension type bar assembly array formula is arranged, the vortex street in array inside can interact, and produces the more frequency content of horn of plenty, and the chance that produces 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 generating device, it is characterized in that: comprise suspension type bar assembly, described suspension type bar assembly from top to bottom comprise successively at least two rigid rods (1) with for being connected the flexible joint (2) of adjacent rigid bar (1), flexible joint (2) sidewall at least adheres to a piezoelectric unit (3).
2. windbell type piezoelectric generating device according to claim 1, is characterized in that: described suspension type bar assembly surpasses 1 group, organizes suspension type bar assembly more and hangs 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 true CN103516258A (en) | 2014-01-15 |
| CN103516258B CN103516258B (en) | 2015-09-09 |
Family
ID=49898442
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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103516258B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109856370A (en) * | 2019-04-10 | 2019-06-07 | 吉林建筑大学 | Strong wind area actual situation of land resource monitoring system based on piezoelectric material self energizing |
| CN110224635A (en) * | 2019-06-05 | 2019-09-10 | 郑州大学 | A kind of multi-direction prisoner's energy device |
| CN111355403A (en) * | 2020-03-17 | 2020-06-30 | 宁波大学 | Jellyfish-shaped piezoelectric triboelectric composite ocean mechanical energy collector |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008503992A (en) * | 2004-06-17 | 2008-02-07 | アダプティブエナジー・リミテッド・ライアビリティー・カンパニー | Piezoelectric generator and method of operating the same |
| US20100052324A1 (en) * | 2005-10-18 | 2010-03-04 | Board Of Regents, The University Of Texas System | Piezoelectric windmill apparatus |
| CN202586806U (en) * | 2012-06-04 | 2012-12-05 | 浙江师范大学 | Miniature wind energy gatherer |
| CN103166504A (en) * | 2013-04-03 | 2013-06-19 | 重庆大学 | Impact micro-energy harvesting array structure |
| CN203457076U (en) * | 2013-08-21 | 2014-02-26 | 南京航空航天大学 | Windbell type piezoelectric power generation device |
-
2013
- 2013-08-21 CN CN201310365863.4A patent/CN103516258B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008503992A (en) * | 2004-06-17 | 2008-02-07 | アダプティブエナジー・リミテッド・ライアビリティー・カンパニー | Piezoelectric generator and method of operating the same |
| US20100052324A1 (en) * | 2005-10-18 | 2010-03-04 | Board Of Regents, The University Of Texas System | Piezoelectric windmill apparatus |
| CN202586806U (en) * | 2012-06-04 | 2012-12-05 | 浙江师范大学 | Miniature wind energy gatherer |
| CN103166504A (en) * | 2013-04-03 | 2013-06-19 | 重庆大学 | Impact micro-energy harvesting array structure |
| CN203457076U (en) * | 2013-08-21 | 2014-02-26 | 南京航空航天大学 | Windbell type piezoelectric power generation device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109856370A (en) * | 2019-04-10 | 2019-06-07 | 吉林建筑大学 | Strong wind area actual situation of land resource monitoring system based on piezoelectric material self energizing |
| CN110224635A (en) * | 2019-06-05 | 2019-09-10 | 郑州大学 | A kind of multi-direction prisoner's energy device |
| CN111355403A (en) * | 2020-03-17 | 2020-06-30 | 宁波大学 | Jellyfish-shaped piezoelectric triboelectric composite ocean mechanical energy collector |
| CN111355403B (en) * | 2020-03-17 | 2023-04-28 | 宁波大学 | Jellyfish-shaped piezoelectric friction electric composite ocean mechanical energy collector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103516258B (en) | 2015-09-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102223105B (en) | Piezoelectric generator | |
| Zou et al. | Mechanical modulations for enhancing energy harvesting: Principles, methods and applications | |
| CN202978758U (en) | Frequency-controllable piezoelectric power generator | |
| Zheng et al. | A novel wind energy harvesting system with hybrid mechanism for self-powered applications in subway tunnels | |
| CN203457078U (en) | Tab type piezoelectric power generation device | |
| CN102170246B (en) | Vibrating type miniature wind driven generator with flexible beam structure | |
| CN103475263A (en) | Tab type piezoelectric generation device and method | |
| CN102946211A (en) | Voltage-adjustable piezoelectric power generation device | |
| CN103490667B (en) | Reed-type piezoelectric generating device and method | |
| CN103516258B (en) | Windbell-type piezoelectric power generation device | |
| Dai et al. | A hybrid energy harvesting system for self-powered applications in shared bicycles | |
| CN103023375A (en) | High efficiency piezoelectricity power-generating device | |
| CN108696183B (en) | A kind of broadband vortex-induced vibration piezoelectric energy collector being installed on high-speed railway | |
| CN203457076U (en) | Windbell type piezoelectric power generation device | |
| CN103956935B (en) | Piezoelectric power generation device and power generation method thereof | |
| CN202978756U (en) | Voltage-adjustable piezoelectric power generation device | |
| Zhang et al. | A variable damping vibration energy harvester based on Half-Wave flywheeling effect for freight railways | |
| CN103762896A (en) | Device for collecting low-speed flow kinetic energy through vortex induced vibration of two columns arrayed in series | |
| CN203896220U (en) | Piezoelectric generating set | |
| CN102957340A (en) | Breeze generator | |
| CN103475264B (en) | Bending bar type piezoelectric generating device and method | |
| CN101924492A (en) | Hydraulic power generation technique by utilizing piezoelectricity principle | |
| CN107508494B (en) | A kind of tunnel air-flow cause vibration energy accumulator | |
| CN203014707U (en) | High-efficiency piezoelectric power generation apparatus | |
| CN206650602U (en) | Bluff body vortex-induced vibration energy collecting device with rough surface band |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150909 Termination date: 20170821 |