CN203406804U - Cantilever-beam based longitudinal vibration piezoelectric generation apparatus - Google Patents
Cantilever-beam based longitudinal vibration piezoelectric generation apparatus Download PDFInfo
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- CN203406804U CN203406804U CN201320406765.6U CN201320406765U CN203406804U CN 203406804 U CN203406804 U CN 203406804U CN 201320406765 U CN201320406765 U CN 201320406765U CN 203406804 U CN203406804 U CN 203406804U
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- weight block
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- piezoelectric vibrator
- piezoelectric oscillator
- cantilever
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- 239000002184 metal Substances 0.000 claims abstract description 8
- 238000005452 bending Methods 0.000 claims abstract description 7
- 230000005484 gravity Effects 0.000 claims abstract description 6
- 239000000919 ceramic Substances 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims description 3
- 238000011084 recovery Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 238000010248 power generation Methods 0.000 abstract description 2
- 230000003068 static effect Effects 0.000 description 3
- 230000005284 excitation Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
- 239000010926 waste battery Substances 0.000 description 1
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Abstract
The utility model relates to a cantilever-beam based longitudinal vibration piezoelectric generation apparatus, belonging to the technical field of new energy and power generation. Two circular discs with circular protrusions are symmetrically arranged via screws, a piezoelectric oscillator is crimped in the middle and is made from piezoelectric ceramics and a metal sheet, the free end is provided with a weight block, and a spring is connected between the weight block and the lower circuit disc to balance the gravity of the weight block, after the circular discs are symmetrically arranged, the protrusions are just clamped on the metal sheet, close to the weight block, of the cantilever-beam type piezoelectric oscillator to take a fulcrum effect on the piezoelectric oscillator, when the weight block vibrates up and down, the piezoelectric oscillator bends and deforms under the support of the protrusions to convert mechanical energy into electric energy, thereby realizing energy recovery. The apparatus provided is advantageous in that the piezoelectric oscillator is free of being damaged due to excessive bending and deformation under large-amplitude vibration, the structure is simple, the reliability is high, and the quality of the weight block and the fixed frequency of the generation apparatus are changed, and the vibration energy recovery can be realized under low frequency and high frequency.
Description
Technical field
The utility model belongs to new forms of energy and technical field of power generation, be specifically related to a kind of based on cantilever beam longitudinal vibration formula piezoelectric generating device, for low electricity frequently, the extensional vibration energy of high reliability reclaims.
Background technology
For meet micropower electronic product and microminiature remote sensing and heeling-in detection system self-powered demand, avoid a large amount of waste battery contaminated environment, based on electromagnetism, static, thermoelectricity, the research of the microminiature Blast Furnace Top Gas Recovery Turbine Unit (TRT) of the principles such as electric capacity and piezoelectricity has become forward position both domestic and external focus.All kinds of Blast Furnace Top Gas Recovery Turbine Unit (TRT) have advantage and the suitable application area of himself, that the advantage of piezoelectric type vibration generating device is is simple in structure, be easy to make and implementation structure on microminiaturization and integrated etc., therefore the scope of application is wider, now progressively for fields such as transducer, health monitoring and wireless transmitting systems.
Utilizing piezoelectric to reclaim aspect environmental energy, all there is more patent application both at home and abroad, wherein the overwhelming majority is recovered as application target with vibrational energy.As everyone knows, for oscillatory type piezoelectric generator, only when equating with ambient vibration frequency, piezoelectric vibrator natural frequency can reach higher generating capacity and energy conversion efficiency.But because of piezoelectric vibrator self resonance frequency conventionally higher, the resonance frequency that wherein resonance frequency of piezoelectric cantilever reaches hundreds of hertz, circular piezoelectric vibrator is up to several KHz, and ambient vibration frequency is generally tens hertz, even only has several hertz, therefore directly utilize the effect of piezoelectric vibrator collection environment vibrational energy also not obvious.For reducing the natural frequency of piezoelectric vibrator, the method adopting is at present in cantilever beam piezoelectric vibrators end or lumped mass piece is installed in circular piezoelectric vibrator center, its drawback is when the mass of installing is larger, even piezoelectric vibrator has just produced moderate finite deformation when non operating state, in work very easily because being out of shape excessive damage.The deformability that its reason is that piezoceramic material quality is very crisp, can bear and limited, even its safe deflection of longer cantilever beam piezoelectric vibrators is only also grade.In actual life, conventional ambient vibration is mainly brought out by all kinds of vehicles operations, human motion, this type of has the double grading of low frequency and large amplitude concurrently, and wherein the extensional vibration amplitude of the vehicles such as automobile, bicycle can reach several centimetres, even tens centimetres sometimes.Visible, present portable vibration Blast Furnace Top Gas Recovery Turbine Unit (TRT) is difficult to obtain in practice application widely.
Summary of the invention
The limitation that only can reclaim for the vibrational energy under the environment less at amplitude, frequency is higher for existing piezoelectricity oscillating generating set, the utility model provides a kind of high-frequency, reliable and stable cylindrical cavity built-in cantilever beam piezoelectric generating device, for all kinds of vehicles jolt and the conventional environment such as human motion under low frequency, large-amplitude vibration energy reclaim.
The embodiment that the utility model adopts is: two disks with circular protrusions are installed by screw is symmetrical, centre is crimped with piezoelectric vibrator, described piezoelectric vibrator consists of piezoelectric ceramic and sheet metal, free end is equipped with weight block, is connected with spring in order to the gravity of weight equalizer piece between described weight block and lower disc; After the symmetrical installation of described disk, projection is just clamped on the sheet metal of beam type piezoelectric vibrator near weight block, piezoelectric vibrator is played to a point action, in weight block up-down vibration, piezoelectric vibrator occurs bending and deformation under projection supports, mechanical energy is changed into electric energy, thereby realize energy, reclaim.
Under nature, the free-ended weight block of piezoelectric vibrator is in poised state under the effect of gravity and spring force, and now piezoelectric vibrator also remains static.When the utility model is subject to extensional vibration when excitation, the weight block in cavity will up-down vibration, thereby is supported piezoelectric vibrator is also occured bending and deformation by projection.Deep-slotted chip breaker on while disk plays the effect of restriction piezoelectric vibrator overbending and also avoids piezoelectric vibrator because being out of shape excessive damage.
Advantage of the present utility model and feature are: 1. piezoelectric vibrator can not vibrate and damage because flexural deformation is excessive under large amplitude, and simple in structure, reliability is high; 2. can change the quality of weight block, change the natural frequency of Blast Furnace Top Gas Recovery Turbine Unit (TRT), the vibrational energy of realizing under low frequency, high frequency reclaims.
Accompanying drawing explanation
Fig. 1 is the structure cutaway view under Blast Furnace Top Gas Recovery Turbine Unit (TRT) inactive state in preferred embodiment of the utility model;
Fig. 2 is the vertical view that removes upper disk of Fig. 1;
Fig. 3 is the partial enlarged drawing in circular arc point and circular arc chamber in preferred embodiments of the utility model;
Fig. 4 is the cutaway view of the preferred embodiment of the utility model under extensional vibration state.
Embodiment
The embodiment that the utility model adopts is: two disks 3 with circular arc depression are installed by screw is symmetrical, centre is crimped with piezoelectric vibrator, described piezoelectric vibrator consists of piezoelectric ceramic 1 and sheet metal 2, free end is equipped with weight block, between described weight block 4 and lower disc, is connected with spring 8 in order to the gravity of weight equalizer piece; After the symmetrical installation of described disk, projection 7 is just clamped on the sheet metal of beam type piezoelectric vibrator near weight block, piezoelectric vibrator is played to a point action, in weight block 4 up-down vibration, piezoelectric vibrator occurs bending and deformation under projection 7 supports, mechanical energy is changed into electric energy, thereby realize energy, reclaim.
Under nature, the free-ended weight block of piezoelectric vibrator is in poised state under the effect of gravity and spring force, and now piezoelectric vibrator also remains static.When the utility model is subject to extensional vibration when excitation, will up-down vibration in the weight block 4 of 6 li of cavitys, thus by projection 7, support piezoelectric vibrator is also occured bending and deformation.Deep-slotted chip breaker 5 on while disk 3 also can limit the bending excessively of piezoelectric vibrator and avoid piezoelectric vibrator because being out of shape excessive damage.
Claims (1)
1. one kind based on cantilever beam longitudinal vibration formula piezoelectric generating device, it is characterized in that: two disks with circular protrusions are installed by screw is symmetrical, centre is crimped with piezoelectric vibrator, described piezoelectric vibrator consists of piezoelectric ceramic and sheet metal, free end is equipped with weight block, is connected with spring in order to the gravity of weight equalizer piece between described weight block and lower disc; After the symmetrical installation of described disk, projection is just clamped on the sheet metal of beam type piezoelectric vibrator near weight block, and piezoelectric vibrator is played to a point action, and in weight block up-down vibration, piezoelectric vibrator occurs bending and deformation under projection supports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320406765.6U CN203406804U (en) | 2013-06-30 | 2013-06-30 | Cantilever-beam based longitudinal vibration piezoelectric generation apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320406765.6U CN203406804U (en) | 2013-06-30 | 2013-06-30 | Cantilever-beam based longitudinal vibration piezoelectric generation apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN203406804U true CN203406804U (en) | 2014-01-22 |
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| CN201320406765.6U Expired - Fee Related CN203406804U (en) | 2013-06-30 | 2013-06-30 | Cantilever-beam based longitudinal vibration piezoelectric generation apparatus |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680724A (en) * | 2016-04-25 | 2016-06-15 | 苏州科技学院 | Modular buried piezoelectric power generation device |
| CN105743389A (en) * | 2016-04-25 | 2016-07-06 | 苏州科技学院 | Equal-stress cantilever lever intermediate-pressure type piezoelectric power generation module |
| CN108776280A (en) * | 2018-07-11 | 2018-11-09 | 哈尔滨工业大学 | A kind of piezoelectric energy harvesters test device based on autoregressive parameter dynamic vibration absorber |
| CN111082699A (en) * | 2019-12-13 | 2020-04-28 | 合肥工业大学 | Piezoelectric vibrator with non-sinusoidal periodic resonance |
| CN112117932A (en) * | 2020-09-02 | 2020-12-22 | 广州大学 | Power generation device and health monitoring equipment using same |
-
2013
- 2013-06-30 CN CN201320406765.6U patent/CN203406804U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680724A (en) * | 2016-04-25 | 2016-06-15 | 苏州科技学院 | Modular buried piezoelectric power generation device |
| CN105743389A (en) * | 2016-04-25 | 2016-07-06 | 苏州科技学院 | Equal-stress cantilever lever intermediate-pressure type piezoelectric power generation module |
| CN105680724B (en) * | 2016-04-25 | 2017-06-20 | 苏州科技大学 | A kind of modular buried piezoelectric generating device |
| CN108776280A (en) * | 2018-07-11 | 2018-11-09 | 哈尔滨工业大学 | A kind of piezoelectric energy harvesters test device based on autoregressive parameter dynamic vibration absorber |
| CN111082699A (en) * | 2019-12-13 | 2020-04-28 | 合肥工业大学 | Piezoelectric vibrator with non-sinusoidal periodic resonance |
| CN112117932A (en) * | 2020-09-02 | 2020-12-22 | 广州大学 | Power generation device and health monitoring equipment using same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140122 Termination date: 20140630 |
|
| EXPY | Termination of patent right or utility model |