CN104242726A - Self-adaptive piezoelectric generator - Google Patents
Self-adaptive piezoelectric generator Download PDFInfo
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- CN104242726A CN104242726A CN201410531140.1A CN201410531140A CN104242726A CN 104242726 A CN104242726 A CN 104242726A CN 201410531140 A CN201410531140 A CN 201410531140A CN 104242726 A CN104242726 A CN 104242726A
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- piezoelectric
- piezoelectric vibrator
- mass block
- pedestal
- moving mass
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Abstract
The invention relates to a self-adaptive piezoelectric generator comprising a piezoelectric vibrator, a base, a spring and a sliding mass block. One end of the piezoelectric vibrator is fixed on the base. One end of the spring around the piezoelectric vibrator is connected with the base, and the other end of the spring is connected with the sliding mass block. A mass block sliding through hole is formed in the center of the sliding mass block. The siding mass block is matched with the piezoelectric vibrator through the mass block sliding through hole. The system generates electricity through the rotation movement, when the rotation speed changes, the sliding mass block moves along the piezoelectric vibrator, causing changes of the system rigidity, thus the system resonant frequency changes, the resonant frequency range expands, and piezoelectric generation efficiency is improved.
Description
Technical field
The invention belongs to small-power power field, be specifically related to a kind of self adaptation piezoelectric generating device.
Background technology
Since piezoelectric finds, its power generation applications in specific occasion is ripe and extensively, comprises the strain testing device formed by the character that stress conversion is electric energy by it, all kinds of ignition device directly formed with clashing into piezoelectric generation transient high voltage and electronic fuse device, the piezoelectric cantilever beam deflection that utilizes piezoelectric ceramic to be formed generates electricity to supply the electronic power device etc. that all kinds of electronic device is formed.And piezoelectric cantilever is as the simplest piezo-electric generating structure of one, obtain research and apply widely, piezoelectric cantilever generally has two kinds of operating states for generating electricity, one is under being operated in anti-resonance frequency, cause piezoelectric ceramic to produce stress and strain by the distortion of its stressed generation and form generating capacity in conjunction with piezoelectric effect, another is under being operated in its resonance frequency, now changes mechanical energy is that the efficiency of electric energy significantly improves, but the dynamic excitation moment changes under the occasion that some are special, be not easy to realize piezoelectric cantilever to work under resonance state.The piezoelectric cantilever stressing conditions that the device doing gyration is installed is then more special, the natural frequency of piezoelectric cantilever can be changed by the design of special construction, adapt to extraneous gyration, the efficiency of such piezoelectric cantilever generators has obvious room for promotion.
Summary of the invention
Constant in order to solve the piezoelectric cantilever generators natural frequency be arranged at present on rotating mechanism, cantilever beam system cannot be kept under the moving condition of change to be in the low problem of generating efficiency caused by resonance state, propose a kind of self adaptation piezoelectric generating device, this piezoelectric cantilever is by piezoelectric vibrator, pedestal, spring and moving mass are formed, the pedestal of described self adaptation piezoelectric generating device is fixed on and does in the mechanism of gyration, gyration is utilized to generate electricity, when velocity of rotation changes, moving mass moves along piezoelectric vibrator, cause the change of system stiffness, the resonance frequency of system changes thereupon makes it to have wider resonance frequency range, piezo-electric generating efficiency can be promoted.
To achieve these goals, the present invention is by the following technical solutions:
A kind of self adaptation piezoelectric generating device of the present invention, comprises piezoelectric vibrator, pedestal, spring and moving mass, wherein:
Piezoelectric vibrator one end is fixed on pedestal; Described ring spring is arranged around piezoelectric vibrator, and one end is connected with pedestal, and the other end is connected with moving mass; Described moving mass center arrangement has mass slip through hole, and described moving mass is coordinated with piezoelectric vibrator by mass slip through hole.
Described piezoelectric vibrator can adopt and be pasted onto by a slice piezoelectric sheet material the single-chip piezoelectric vibrator that elastic base plate is formed, and also can adopt and be pasted onto by two panels piezoelectric sheet material the bi-morph piezo-electric oscillator that elastic base plate both sides are formed; Described piezoelectric sheet outer surface, is furnished with multiple electrode, and between electrode, cut-off rule direction is parallel to plane pedestal being furnished with oscillator installing hole.
During use, piezoelectric vibrator is arranged vertically on the direction tangentially vertical with gyration, pedestal is arranged in away from centre of gyration side simultaneously.During work, along with the increase of gyration speed, dynamic excitation frequency rises, moving mass moves along piezoelectric vibrator to pedestal direction under the influence of centrifugal force simultaneously, make the length reduction of piezoelectric vibrator between moving mass and pedestal, rigidity increase, the resonance frequency of Blast Furnace Top Gas Recovery Turbine Unit (TRT) rises, and the natural frequency achieving Blast Furnace Top Gas Recovery Turbine Unit (TRT) realizes the object of self-adaptative adjustment along with the change of gyration cycle and frequency.
Accompanying drawing explanation
Fig. 1 is a kind of self adaptation piezoelectric generating device of the present invention structural representation.
Fig. 2 is the schematic diagram of each part of the present invention and the relation of installation.
Embodiment
See figures.1.and.2, self adaptation piezoelectric generating device of the present invention is made up of piezoelectric vibrator 1, pedestal 2, spring 3 and moving mass 4, wherein:
Piezoelectric vibrator 1 one end is by the oscillator installing hole 21 that is adhesively fixed on the base 2; Described spring 3 is arranged around piezoelectric vibrator 1, and one end is gluedd joint with pedestal 2 and is connected, and the other end glueds joint with moving mass 4 and is connected; Described moving mass 4 center arrangement has mass slip through hole 41, and described moving mass 4 is coordinated with piezoelectric vibrator 1 by mass slip through hole 41.
Described piezoelectric vibrator 1 adopts and is pasted onto by a slice piezoelectric sheet material 11 the single-chip piezoelectric vibrator that elastic base plate 12 is formed, described piezoelectric sheet material 11 outer surface, be furnished with the first electrode 131, second electrode 132 and third electrode 133, each interelectrode electrode cut-off rule is parallel to plane pedestal 2 being furnished with oscillator installing hole 21.
During use, piezoelectric vibrator 1 is arranged vertically on the direction tangentially vertical with gyration, pedestal 2 is arranged in away from centre of gyration side simultaneously, utilize pedestal installing hole 22 to fix.
Claims (3)
1. a self adaptation piezoelectric generating device, comprise: piezoelectric vibrator (1), pedestal (2), spring (3) and moving mass (4), wherein: described piezoelectric vibrator (1) one end is fixed on pedestal (2); Described spring (3) is arranged around piezoelectric vibrator (1), and one end is connected with pedestal (2), and the other end is connected with moving mass (4); Described moving mass (4) center arrangement has mass slip through hole (41), and described moving mass (4) is coordinated with piezoelectric vibrator (1) by the mass through hole (41) that slides.
2. self adaptation piezoelectric generating device according to claim 1, it is characterized in that: described piezoelectric vibrator (1) adopts and is pasted onto the upper single-chip piezoelectric vibrator formed of elastic base plate (12) by a slice piezoelectric sheet material (11), or be pasted onto by two panels piezoelectric sheet material (11) the bi-morph piezo-electric oscillator that elastic base plate (12) both sides are formed.
3. self adaptation piezoelectric generating device according to claim 1, it is characterized in that: piezoelectric sheet material (11) outer surface on described piezoelectric vibrator (1), be furnished with multiple electrode (13), between described electrode (13), cut-off rule is parallel to plane pedestal (2) being furnished with oscillator installing hole (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410531140.1A CN104242726A (en) | 2014-10-09 | 2014-10-09 | Self-adaptive piezoelectric generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410531140.1A CN104242726A (en) | 2014-10-09 | 2014-10-09 | Self-adaptive piezoelectric generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104242726A true CN104242726A (en) | 2014-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410531140.1A Pending CN104242726A (en) | 2014-10-09 | 2014-10-09 | Self-adaptive piezoelectric generator |
Country Status (1)
| Country | Link |
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| CN (1) | CN104242726A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104821739A (en) * | 2015-05-26 | 2015-08-05 | 吉林大学 | Pre-stressed piezoelectric cantilever beam |
| CN113655090A (en) * | 2021-08-02 | 2021-11-16 | 太原理工大学 | Low-power consumption wireless self-powered gas sensor based on energy recovery |
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| CN1402423A (en) * | 2002-09-29 | 2003-03-12 | 上海交通大学 | Continuous receprocating nanodisplacement driver for micro-momentum drive |
| US20070152511A1 (en) * | 2005-12-28 | 2007-07-05 | Usc Corporation | Generating device |
| CN101359882A (en) * | 2008-08-29 | 2009-02-04 | 清华大学 | Piezoelectric vibration energy collecting apparatus with resonance frequency adjustable |
| CN102412757A (en) * | 2011-12-27 | 2012-04-11 | 东南大学 | Cantilever-type piezoelectric generator with adjustable base frequency resonant frequency |
| US20120293042A1 (en) * | 2010-02-09 | 2012-11-22 | Fujitsu Limited | Piezoelectric generator |
| JP2013132192A (en) * | 2011-12-22 | 2013-07-04 | Sound Power Corp | Power generator |
| CN204119086U (en) * | 2014-10-09 | 2015-01-21 | 吉林大学 | A kind of self adaptation piezoelectric generating device |
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2014
- 2014-10-09 CN CN201410531140.1A patent/CN104242726A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1402423A (en) * | 2002-09-29 | 2003-03-12 | 上海交通大学 | Continuous receprocating nanodisplacement driver for micro-momentum drive |
| US20070152511A1 (en) * | 2005-12-28 | 2007-07-05 | Usc Corporation | Generating device |
| CN101359882A (en) * | 2008-08-29 | 2009-02-04 | 清华大学 | Piezoelectric vibration energy collecting apparatus with resonance frequency adjustable |
| US20120293042A1 (en) * | 2010-02-09 | 2012-11-22 | Fujitsu Limited | Piezoelectric generator |
| JP2013132192A (en) * | 2011-12-22 | 2013-07-04 | Sound Power Corp | Power generator |
| CN102412757A (en) * | 2011-12-27 | 2012-04-11 | 东南大学 | Cantilever-type piezoelectric generator with adjustable base frequency resonant frequency |
| CN204119086U (en) * | 2014-10-09 | 2015-01-21 | 吉林大学 | A kind of self adaptation piezoelectric generating device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104821739A (en) * | 2015-05-26 | 2015-08-05 | 吉林大学 | Pre-stressed piezoelectric cantilever beam |
| CN113655090A (en) * | 2021-08-02 | 2021-11-16 | 太原理工大学 | Low-power consumption wireless self-powered gas sensor based on energy recovery |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141224 |