CN113179046B - Piezoelectric power generation device based on water flow impact - Google Patents
Piezoelectric power generation device based on water flow impact Download PDFInfo
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- CN113179046B CN113179046B CN202110466997.XA CN202110466997A CN113179046B CN 113179046 B CN113179046 B CN 113179046B CN 202110466997 A CN202110466997 A CN 202110466997A CN 113179046 B CN113179046 B CN 113179046B
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- water flow
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 238000010248 power generation Methods 0.000 title claims abstract description 17
- 238000001125 extrusion Methods 0.000 claims abstract description 60
- 235000014676 Phragmites communis Nutrition 0.000 claims abstract description 26
- 238000004080 punching Methods 0.000 claims abstract description 14
- 230000000694 effects Effects 0.000 claims abstract description 11
- 238000009991 scouring Methods 0.000 claims abstract description 8
- 230000005284 excitation Effects 0.000 claims description 4
- 244000273256 Phragmites communis Species 0.000 claims 6
- 238000011010 flushing procedure Methods 0.000 abstract description 8
- 239000011148 porous material Substances 0.000 abstract 1
- 239000000919 ceramic Substances 0.000 description 6
- 239000012530 fluid Substances 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- HFGPZNIAWCZYJU-UHFFFAOYSA-N lead zirconate titanate Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Zr+4].[Pb+2] HFGPZNIAWCZYJU-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003903 river water pollution Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
- H02N2/185—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators using fluid streams
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
- H02N2/183—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators using impacting bodies
Abstract
The invention discloses a piezoelectric power generation device based on water flow impact, belonging to the field of piezoelectric power generation; the device consists of a punching plate, a linkage reed, a main extrusion plate, a cymbal-shaped piezoelectric element, a traction shaft, a small extrusion plate, a linkage rod, a magnet block and a spring; the punching plate is connected with the reed through a double-side hook structure; the reed is connected with the extrusion plate through a spring, and the rear part of the scouring plate is provided with a pore for installing a linkage rod; one end of the linkage rod is connected with the punching plate, and the other end of the linkage rod penetrates through the piezoelectric block to reach the rear-side traction shaft, and the traction shaft and the small extrusion plate jointly act to generate secondary extrusion; the punching plate is connected with the linkage reed and the linkage rod; the flushing plate is directly flushed by water flow to generate a certain internal extrusion effect; the punching plate is connected with the reed through a double-side hook structure; the linkage reed is connected with the extrusion plate through a spring, and a magnetic block is arranged between the traction shaft and the extrusion plate; the piezoelectric vibrator is a cymbal-shaped piezoelectric element.
Description
Technical Field
The invention relates to a piezoelectric power generation device based on water flow impact, and belongs to the field of piezoelectric power generation.
Background
Hydroelectric power generation is a common and green energy mode in the modern times, people are always searching for new power generation modes, thousands of rivers are spread in China, and enough hydraulic resources are possessed. Sufficient resources bring sufficient hidden dangers, and domestic experts and scholars with the hidden dangers successively provide corresponding monitoring methods and means, including a water quality monitoring technology aiming at river water pollution, a rainfall and water level and river water flow speed monitoring technology aiming at natural disasters such as flood control and debris flow. Although some of the currently proposed monitoring methods are mature in the technical aspect, they have not been widely popularized and applied yet, and one of the main reasons is that the problem of power supply of the monitoring system is not solved well. Piezoelectric power generation is a novel power generation mode, the piezoelectric effect is utilized, when the piezoelectric plate deforms, certain electric quantity can be generated, the electric quantity can be used for supplying power to the micro sensor, and the piezoelectric power generation has a certain prospect in the future.
Disclosure of Invention
The invention provides a piezoelectric power generation device based on water flow impact. The flushing of the device by the fluid squeezes some of the components of the linkage to generate electrical energy.
The technical scheme adopted by the invention is as follows: a piezoelectric power generation device based on water flow impact comprises a flushing plate, a linkage reed, an extrusion plate, a linkage rod, a secondary extrusion module (a traction shaft and a small extrusion plate), a magnet block, a spring and a cymbal-shaped piezoelectric element.
The punching plate is connected with the reed and the linkage rod; the flushing plate is directly flushed by water flow to generate a certain internal extrusion effect; the punching plate is linked with the reed through a double-side hook structure; the reed is connected with the extrusion plate through a spring, so that a better deformation effect can be achieved on the piezoelectric vibrator, and a fine hole is formed in the rear portion of the scouring plate and used for installing a linkage rod; one end of the linkage rod is connected with the punching plate, and the other end of the linkage rod penetrates through the piezoelectric block to reach a rear secondary extrusion module which consists of a traction shaft and four small extrusion plates; a magnetic block is arranged between the traction shaft and the extrusion plate, so that the extrusion effect under small water flow is better; the piezoelectric vibrator is a cymbal-shaped piezoelectric element.
In the invention, the cymbal-shaped piezoelectric element consists of 2 cymbal-shaped end caps and 1 rectangular ceramic piece, wherein the 2 end caps are adhered to the upper surface and the lower surface of the rectangular ceramic piece, and the ceramic adopts PZT-8; external pressure is converted into tension of the ceramic wafer through deformation of the end caps at the tops of the 2 end caps, free charges are generated on the surface of the ceramic wafer due to the positive piezoelectric effect of the piezoelectric material, and voltage is generated between the upper electrode and the lower electrode of the ceramic wafer to provide electric energy for a load.
In the invention, the reed is mainly divided into three sections; the section a is located at the hook teeth at the rear side of the extrusion plate, the punching plate can extrude the reed downwards once after being washed by fluid, the reed shrinks, the section b is connected with the extrusion plate, the inner side of the section b is provided with a spring hole for connecting a spring, and the section c leads the fluid out of the device.
In the invention, the secondary extrusion module is divided into three parts: one end of a part of linkage rods is connected with the punching plate, and the other end of the linkage rods penetrates through the piezoelectric block to reach the rear side traction shaft: the traction shaft of part b is provided with 4 grooves for placing magnetic blocks: the part c is four small extrusion plates which are provided with magnetic blocks with magnetic poles opposite to those on the traction shaft.
The invention is characterized in that: (1) the cymbal-shaped piezoelectric element can be used for piezoelectric power generation under continuous extrusion, and can be used in various environments; (2) the energy under different excitations is properly utilized by the two groups of extrusion modules, and the characteristic of high-efficiency energy conversion is fully achieved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a view showing the structure of a flushing plate A;
FIG. 3 is a view showing the structure of the leaf spring B;
fig. 4 is a structural view showing a cymbal-shaped piezoelectric element D;
fig. 5 is a view showing the construction of a traction shaft E;
FIG. 6 is a view showing a structure with a small squeeze board F;
FIG. 7 is a view showing an overall configuration of a secondary extrusion module;
FIG. 8 is a view showing the structure of a main compression plate C;
Detailed Description
The following detailed description of the present invention is given for the purpose of better understanding technical solutions of the present invention by those skilled in the art, and the present description is only exemplary and explanatory and should not be construed as limiting the scope of the present invention in any way.
Referring to fig. one, fig. two, fig. three, fig. four, fig. five, fig. six, and fig. seven, in an embodiment of the present invention, a specific structure includes:
a piezoelectric power generation device based on water flow impact comprises a flushing plate, a linkage reed, an extrusion plate, a linkage rod, a secondary extrusion module, a magnet block, a spring and a piezoelectric vibrator; the punching plate is connected with the reed and the linkage rod; the flushing plate is directly flushed by water flow to generate a certain internal extrusion effect; the punching plate is connected with the reed through a latch structure; the reed is connected with the extrusion plate through a spring, so that a better deformation effect can be achieved on the piezoelectric vibrator, and a fine hole is formed in the rear portion of the scouring plate and used for installing a linkage rod; one end of the linkage rod is connected with the flushing plate, and the other end of the linkage rod penetrates through the piezoelectric block to reach a rear secondary extrusion module which is composed of a traction shaft and 4 small extrusion plates; the magnetic block is arranged between the traction shaft and the extrusion plate, so that the extrusion effect is better under small water flow; the piezoelectric vibrator is a cymbal-shaped piezoelectric element.
In the non-working state, all parts are in a static state, and the spring is in a natural length. When the scouring plate receives the fluid impact, the scouring plate presses the lower end reed. The reed contracts inwards to link the spring to drive the extrusion plate to extrude and deform the cymbal-shaped piezoelectric element, and the upper side and the lower side of the cymbal-shaped piezoelectric element generate potential difference through extrusion deformation. When the impact of the fluid is not large, the scouring plate drives the linkage rod to pull the traction shaft, the traction shaft and the four small extrusion plates are provided with small magnetic blocks with different magnetic poles, and the traction shaft drives the 4 small extrusion plates to extrude the main extrusion plate; therefore, the cymbal-shaped piezoelectric element can work normally under the environment with less excitation or the fluid environment with low flow velocity, and the mechanical energy is converted into the electric energy.
The principles and embodiments of the present invention have been described herein using specific examples, which are intended to facilitate an understanding of the principles and core concepts of the invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, or combinations, or other applications of the inventive concepts and solutions as may be employed without such modifications, are intended to be included within the scope of the present invention.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (3)
1. A piezoelectric power generation device based on water flow impact is characterized by comprising a scouring plate A, linkage reeds B1, B2, a main extrusion plate C1, a main extrusion plate C2, a cymbal-shaped piezoelectric element D, a traction shaft E, a small extrusion plate F1, a small extrusion plate F2, a small extrusion plate F3, a small extrusion plate F4, a linkage rod G, a magnet block H, a spring I1 and a spring I2; the punching plate A is connected with linkage reeds B1 and B2 through a double-side hook structure; the linkage reeds B1 and B2 are connected with the main extrusion plates C1 and C2 through springs, so that a better deformation effect can be achieved on the piezoelectric vibrator, and a fine hole is formed in the rear portion of the scouring plate A and used for installing a linkage rod G; one end of a linkage rod G is connected with the punching plate A, and the other end of the linkage rod G penetrates through a traction shaft E in a rear secondary extrusion module, wherein the secondary extrusion module is composed of the traction shaft E and small extrusion plates F1, F2, F3 and F4; a magnet block H is arranged between the traction shaft E and the small-sized extrusion plates F1, F2, F3 and F4, the traction shaft E transmits the excitation of the water flow of the external environment through the linkage rod G, and then the magnet block H acts on the small-sized extrusion plates F1, F2, F3 and F4, so that the small-sized extrusion plates have better extrusion effect under small water flow; the piezoelectric vibrator adopts a cymbal-shaped piezoelectric element D; the piezoelectric power generation device is used in a bridge pier, linkage reeds B1 and B2 are parallel, main extrusion plates C1 and C2 are parallel, the lengths of the linkage reeds B1 and B2 are not more than those of the linkage reeds, small extrusion plates F1, F2, F3 and F4 are centrosymmetric, and the extending lengths of the small extrusion plates are not more than those of the main extrusion plates C1 and C2.
2. The piezoelectric power generating device based on water flow impact as claimed in claim 1, wherein the double extrusion device is provided, the traction axis E in the rear secondary extrusion module is responsible for matching with the main extrusion plates C1, C2 and amplifying the micro impact through the traction axis E, and the small extrusion plates F1, F2, F3, F4 are centrosymmetric and the protruding length should not exceed the reserved length of the main extrusion plates C1, C2.
3. The piezoelectric power generator based on water flow impact as claimed in claim 1, wherein the linkage reed is not operated at the beginning and the end to maintain a balanced state, and is operated to be squeezed and transmit the excitation of the external environment water flow to the main squeezing plates C1, C2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110466997.XA CN113179046B (en) | 2021-04-28 | 2021-04-28 | Piezoelectric power generation device based on water flow impact |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110466997.XA CN113179046B (en) | 2021-04-28 | 2021-04-28 | Piezoelectric power generation device based on water flow impact |
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| CN113179046A CN113179046A (en) | 2021-07-27 |
| CN113179046B true CN113179046B (en) | 2022-06-17 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0115072D0 (en) * | 2001-06-20 | 2001-08-15 | 1 Ltd | Motors and generators using an electro-active device |
| WO2010043617A2 (en) * | 2008-10-15 | 2010-04-22 | D4 Technology Limited | Generator for converting fluid energy to electrical energy |
| CN103312216A (en) * | 2013-06-06 | 2013-09-18 | 中山大学 | Fluid piezoelectric power generation assembly and assembly set |
| CN109428516A (en) * | 2017-08-29 | 2019-03-05 | 三角力量管理株式会社 | Generating element |
| CN112234865A (en) * | 2020-10-04 | 2021-01-15 | 长春工业大学 | Array piezoelectric-electromagnetic energy harvester based on fluid excitation |
-
2021
- 2021-04-28 CN CN202110466997.XA patent/CN113179046B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0115072D0 (en) * | 2001-06-20 | 2001-08-15 | 1 Ltd | Motors and generators using an electro-active device |
| WO2010043617A2 (en) * | 2008-10-15 | 2010-04-22 | D4 Technology Limited | Generator for converting fluid energy to electrical energy |
| CN103312216A (en) * | 2013-06-06 | 2013-09-18 | 中山大学 | Fluid piezoelectric power generation assembly and assembly set |
| CN109428516A (en) * | 2017-08-29 | 2019-03-05 | 三角力量管理株式会社 | Generating element |
| CN112234865A (en) * | 2020-10-04 | 2021-01-15 | 长春工业大学 | Array piezoelectric-electromagnetic energy harvester based on fluid excitation |
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| CN113179046A (en) | 2021-07-27 |
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