CN112332696B - Aircraft-shaped fluid energy harvester - Google Patents
Aircraft-shaped fluid energy harvester Download PDFInfo
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- CN112332696B CN112332696B CN202011050975.7A CN202011050975A CN112332696B CN 112332696 B CN112332696 B CN 112332696B CN 202011050975 A CN202011050975 A CN 202011050975A CN 112332696 B CN112332696 B CN 112332696B
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- 239000012530 fluid Substances 0.000 title claims abstract description 54
- 238000010248 power generation Methods 0.000 claims abstract description 16
- 238000012544 monitoring process Methods 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims description 12
- 239000000758 substrate Substances 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000004026 adhesive bonding Methods 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 6
- 229910001369 Brass Inorganic materials 0.000 claims description 3
- 239000010951 brass Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims 1
- 238000005260 corrosion Methods 0.000 claims 1
- 238000003306 harvesting Methods 0.000 abstract description 15
- 230000006698 induction Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 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
- 238000003903 river water pollution Methods 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K35/00—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit
-
- 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
- H02N2/186—Vibration harvesters
Abstract
The invention discloses an aircraft-shaped fluid energy harvester, which aims to solve the problem of power supply of a monitoring system. The invention mainly comprises a fixed shaft, a circular magnet, an airfoil-shaped disturbing fluid, a connecting spring, a spindle-shaped sleeve, a piezoelectric vibrator and a fixed spring. When fluid passes through the wing-shaped disturbing fluid, the fluid can move horizontally at a high speed, the electromagnetic coil and the round magnet in the sleeve can generate cutting magnetic induction line motion to generate electromagnetic power, meanwhile, the fluid can generate an upward force when passing through the wing-shaped disturbing fluid to cause the piezoelectric vibrator to deform, and charges can appear on the surface of the vibrator due to the piezoelectric effect; the piezoelectric-electromagnetic power generation mode is achieved. The piezoelectric power generation and the electromagnetic power generation are carried out simultaneously, and the voltage generated by energy harvesting can reach the maximum in a short time. The fluid flow induced vibration energy harvesting device has the characteristics of simple structure, wide energy harvesting frequency band, high energy harvesting efficiency and the like, and has good application prospect in the technical field of fluid flow induced vibration energy harvesting.
Description
Technical Field
The invention relates to an aircraft-like fluid energy harvester, in particular to a piezoelectric-electromagnetic energy harvester capable of collecting water energy and wind energy, and belongs to the technical field of fluid flow-induced vibration energy harvesting.
Background
The Yangtze river is the first big river in China, and historically, extra-large flood disasters occur in the Yangtze river area for many times. In recent years, the negative ecological effect of the unreasonable water conservancy construction on rivers in the blind lake-surrounding field building with serious ecological damage cannot be ignored. In addition, because the flood control facilities of small and medium rivers in many areas are imperfect at present, or even no flood control facilities are provided, the danger of bank breaking or bank overflowing can be caused when the flood season comes, and the safety of lives and property of people along the bank is threatened directly. The experts and scholars in China successively put forward 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 and the like. 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.
Disclosure of Invention
The invention provides an energy harvesting device which is high in power generation amount, stable in electric quantity and capable of directly collecting water energy, aiming at the problems of power supply of the existing monitoring system.
The technical scheme adopted by the invention is as follows: an aircraft-shaped fluid energy harvester consists of a fixed shaft (1), a circular magnet (2), an aircraft wing-shaped disturbing fluid (3), a connecting spring (4), a spindle-shaped sleeve (5), a piezoelectric vibrator (6) and a fixed spring (7);
the fixing shaft (1) consists of a front end fixing shaft (1-1) and a rear end fixing shaft (1-2), wherein a round fixing block (1-3) is welded at the left end of the front end fixing shaft (1-1), and a deeper round hole groove (1-4) is formed at the right end of the front end fixing shaft; a circular magnet (2) is embedded in the circular hole grooves (1-4), the rear end fixing shaft (1-2) is a stepped shaft, the left end of the rear end fixing shaft (1-2) is thin and can be directly inserted into the circular hole grooves (1-4) of the front end fixing shaft (1-1) and fix the circular magnet (2) at the bottommost parts of the circular hole grooves (1-4), and the rear end fixing shaft (1-2) is inserted into the circular groove holes (2) of the front end fixing shaft (1-1) and fixed through gluing; the shape of the wing-shaped disturbing fluid (3) is similar to that of a wing of an airplane, a stepped shaft is arranged at the central position of the wing-shaped disturbing fluid (3), a through hole (3-2) is formed in the disturbing fluid stepped shaft (3-1), and the fixed shaft (1) passes through the through hole (3-2); the connecting spring (4) passes through the fixed shaft (1), and one end of the connecting spring (4) is sleeved into the thinner end of the stepped shaft (3-1) in the spoiler body; the spindle-shaped sleeve (5) is provided with two rectangular straight grooves (5-1), the two rectangular straight grooves (5-1) are arranged on the same plane, and a metal substrate (6-1) of the piezoelectric vibrator (6) is inserted into the rectangular straight grooves (5-1) and is fixed through bonding; the piezoelectric vibrator (6) is composed of a metal substrate (6-1) and a rectangular piezoelectric ceramic piece (6-2), the rectangular piezoelectric ceramic piece (6-2) is bonded on the metal substrate (6-1), and the metal substrate (6-1) is a brass piezoelectric beam; the left end of the fusiform sleeve (5) is wound with an electromagnetic coil (5-2) and sleeved with the left end of the fusiform sleeve (1-1) through a sleeve end cover (5-3) and welded and sealed; the other end of the connecting spring (4) is sleeved into the right side of the sleeve end cover (5-3); one end of the fixed spring (7) is sleeved on the right side of the fusiform shell (5), and the other end and the rear end fixed shaft (1-2) are fixed on a monitoring system along the fluid direction, so that the purpose of assembling the whole energy harvester is achieved.
As a further improvement of the technical scheme, the fixed shaft (1) consists of two parts, the circular magnet (2) is embedded in the fixed shaft (1), and the front end fixed shaft (1-1) and the rear end fixed shaft (1-2) are matched in a gluing way, so that the structural strength of the fixed shaft (1) is as same as that of an integrated part.
As a further improvement of the technical scheme, the plane of the bottom of the piezoelectric vibrator (6) on the fusiform sleeve is parallel to the plane of the bottom of the wing-shaped disturbing fluid (3), and the fusiform sleeve (5) can rotate along with the rotation of the wing-shaped disturbing fluid (3) through the connecting spring (4), so that the purpose of always keeping the plane of the bottom of the piezoelectric vibrator (6) on the fusiform sleeve (5) parallel to the plane of the bottom of the wing-shaped disturbing fluid (3) is achieved.
As a further improvement of the technical scheme, the electromagnetic coil (5-2) is wound inside the spindle-shaped sleeve (5), the spindle-shaped sleeve (5) and the sleeve end cover (5-3) are welded to achieve the sealing effect, and the electromagnetic coil (5-2) is prevented from being corroded by water and losing the electromagnetic power generation effect.
The invention has the beneficial effects that:
the power generation device utilizes the fact that fluid passes through the wing-shaped disturbing fluid, the fluid can move horizontally at a high enough speed, the electromagnetic coil and the round magnet in the sleeve can generate cutting magnetic induction lines to move so as to generate electromagnetic power, meanwhile, the fluid can generate an upward force when passing through the wing-shaped disturbing fluid so as to cause the piezoelectric vibrator to deform, and charges can appear on the surface of the vibrator due to the piezoelectric effect; the piezoelectric-electromagnetic power generation mode is achieved; the piezoelectric power generation and the electromagnetic power generation are carried out simultaneously, and the voltage generated by energy harvesting can reach the maximum in a short time;
drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the structure of the fixing shaft of the present invention.
Fig. 3 is a schematic diagram of the solenoid assembly of the present invention.
Fig. 4 is a schematic structural view of the front end fixed shaft of the present invention.
Fig. 5 is a schematic structural view of the rear end fixed shaft of the present invention.
Fig. 6 is a schematic structural view of the spindle sleeve according to the present invention.
Fig. 7 is a schematic view of the end cap structure of the sleeve.
FIG. 8 is a schematic view of an airfoil-shaped spoiler structure according to the present invention.
Fig. 9 is a schematic view showing the structure of the piezoelectric vibrator according to the present invention.
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. 1 to 9, in an embodiment of the present invention, the structure includes:
an aircraft-shaped fluid energy harvester consists of a fixed shaft (1), a circular magnet (2), an aircraft wing-shaped disturbing fluid (3), a connecting spring (4), a spindle-shaped sleeve (5), a piezoelectric vibrator (6) and a fixed spring (7); the fixing shaft (1) consists of a front end fixing shaft (1-1) and a rear end fixing shaft (1-2), wherein a round fixing block (1-3) is welded at the left end of the front end fixing shaft (1-1), and a deeper round hole groove (1-4) is formed at the right end of the front end fixing shaft; a circular magnet (2) is embedded in the circular hole grooves (1-4), the rear end fixing shaft (1-2) is a stepped shaft, the left end of the rear end fixing shaft (1-2) is thin and can be directly inserted into the circular hole grooves (1-4) of the front end fixing shaft (1-1) and fix the circular magnet (2) at the bottommost parts of the circular hole grooves (1-4), and the rear end fixing shaft (1-2) is inserted into the circular groove holes (2) of the front end fixing shaft (1-1) and fixed through gluing; the shape of the wing-shaped disturbing fluid (3) is similar to that of a wing of an airplane, a stepped shaft is arranged at the central position of the wing-shaped disturbing fluid (3), a through hole (3-2) is formed in the disturbing fluid stepped shaft (3-1), and the fixed shaft (1) passes through the through hole (3-2); the connecting spring (4) passes through the fixed shaft (1), and one end of the connecting spring (4) is sleeved into the thinner end of the stepped shaft (3-1) in the spoiler body; the spindle-shaped sleeve (5) is provided with two rectangular straight grooves (5-1), the two rectangular straight grooves (5-1) are arranged on the same plane, and a metal substrate (6-1) of the piezoelectric vibrator (6) is inserted into the rectangular straight grooves (5-1) and is fixed through bonding; the piezoelectric vibrator (6) is composed of a metal substrate (6-1) and a rectangular piezoelectric ceramic piece (6-2), the rectangular piezoelectric ceramic piece (6-2) is bonded on the metal substrate (6-1), and the metal substrate (6-1) is a brass piezoelectric beam; the left end of the fusiform sleeve (5) is wound with an electromagnetic coil (5-2) and sleeved with the left end of the fusiform sleeve (1-1) through a sleeve end cover (5-3) and welded and sealed; the other end of the connecting spring (4) is sleeved into the right side of the sleeve end cover (5-3); one end of the fixed spring (7) is sleeved on the right side of the fusiform shell (5), and the other end and the rear end fixed shaft (1-2) are fixed on a monitoring system along the fluid direction, so that the purpose of assembling the whole energy harvester is achieved.
As a further improvement of the technical scheme, the fixed shaft (1) consists of two parts, the circular magnet (2) is embedded in the fixed shaft (1), and the front end fixed shaft (1-1) and the rear end fixed shaft (1-2) are matched in a gluing way, so that the structural strength of the fixed shaft (1) is as same as that of an integrated part.
As a further improvement of the technical scheme, the plane of the bottom of the piezoelectric vibrator (6) on the fusiform sleeve is parallel to the plane of the bottom of the wing-shaped disturbing fluid (3), and the fusiform sleeve (5) can rotate along with the rotation of the wing-shaped disturbing fluid (3) through the connecting spring (4), so that the purpose of always keeping the plane of the bottom of the piezoelectric vibrator (6) on the fusiform sleeve (5) parallel to the plane of the bottom of the wing-shaped disturbing fluid (3) is achieved.
As a further improvement of the technical scheme, the electromagnetic coil (5-2) is wound inside the spindle-shaped sleeve (5), the spindle-shaped sleeve (5) and the sleeve end cover (5-3) are welded to achieve the sealing effect, and the electromagnetic coil (5-2) is prevented from being corroded by water and losing the electromagnetic power generation effect.
The working process of the invention is divided into a piezoelectric power generation process and an electromagnetic power generation process:
the piezoelectric power generation process comprises the following steps: when the fluid passes through the wing-shaped disturbing fluid (3), an upward force is generated to cause the piezoelectric vibrator (6) to deform, and the surface of the vibrator has electric charges due to the piezoelectric effect;
the electromagnetic power generation process comprises the following steps: the fluid passes through the wing-shaped disturbing fluid (3), the fluid can move horizontally due to the high speed of the fluid, and the electromagnetic coil (5-2) and the circular magnet (2) in the sleeve can generate the motion of cutting magnetic induction lines to generate electromagnetic power; through the combination of the two processes, a piezoelectric-electromagnetic power generation mode is realized; the energy management circuit is arranged inside the fusiform sleeve (3), is respectively connected with the piezoelectric energy harvesting component and the electromagnetic energy harvesting component, is used for receiving and distributing the electromagnetic energy harvesting sent by the electromagnetic energy harvesting component and the piezoelectric energy harvesting and storing element sent by the piezoelectric energy harvesting component, and is connected with the energy management circuit and used for storing the piezoelectric energy harvesting sent by the energy management circuit on the shell so as to achieve the purpose of supplying power to the monitoring system.
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, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.
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 (4)
1. An aircraft-shaped fluid energy harvester consists of a fixed shaft (1), a circular magnet (2), an aircraft wing-shaped disturbing fluid (3), a connecting spring (4), a spindle-shaped sleeve (5), a piezoelectric vibrator (6) and a fixed spring (7); the fixing shaft (1) consists of a front end fixing shaft (1-1) and a rear end fixing shaft (1-2), wherein a round fixing block (1-3) is welded at the left end of the front end fixing shaft (1-1), and a deeper round hole groove (1-4) is formed at the right end of the front end fixing shaft; a circular magnet (2) is embedded in the circular hole groove (1-4), the rear end fixing shaft (1-2) is a stepped shaft, the left end of the rear end fixing shaft (1-2) is thin and can be directly inserted into the circular hole groove (1-4) of the front end fixing shaft (1-1) and fix the circular magnet (2) at the bottommost part of the circular hole groove (1-4), and the rear end fixing shaft (1-2) is inserted into the circular hole groove (1-4) of the front end fixing shaft (1-1) and fixed through gluing; the shape of the wing-shaped disturbing fluid (3) is similar to that of a wing of an airplane, a stepped shaft is arranged at the central position of the wing-shaped disturbing fluid (3), a through hole (3-2) is formed in the stepped shaft (3-1) of the disturbing fluid, and the fixed shaft (1) passes through the through hole (3-2); the connecting spring (4) passes through the fixed shaft (1), and one end of the connecting spring (4) is sleeved into the thinner end of the stepped shaft (3-1) in the spoiler body; the spindle-shaped sleeve (5) is provided with two rectangular straight grooves (5-1), the two rectangular straight grooves (5-1) are arranged on the same plane, and a metal substrate (6-1) of the piezoelectric vibrator (6) is inserted into the rectangular straight grooves (5-1) and is fixed through bonding; the piezoelectric vibrator (6) is composed of a metal substrate (6-1) and a rectangular piezoelectric ceramic piece (6-2), the rectangular piezoelectric ceramic piece (6-2) is bonded on the metal substrate (6-1), and the metal substrate (6-1) is a brass piezoelectric beam; the left end of the spindle-shaped sleeve (5) is wound with an electromagnetic coil (5-2) and sleeved with the left end of the spindle-shaped sleeve (5) through a sleeve end cover (5-3) and welded and sealed; the other end of the connecting spring (4) is sleeved into the left side of the sleeve end cover (5-3); one end of the fixed spring (7) is sleeved into the right side of the fusiform sleeve (5), and the other end and the rear end fixed shaft (1-2) are fixed on a monitoring system along the fluid direction, so that the purpose of assembling the whole energy harvester is achieved.
2. The aircraft-like fluid energy harvester of claim 1, wherein: the fixing shaft (1) consists of two parts, the circular magnet (2) is embedded in the fixing shaft (1), and the front end fixing shaft (1-1) and the rear end fixing shaft (1-2) are matched in a gluing mode to enable the fixing shaft (1) to be as an integral piece in structural strength.
3. The aircraft-like fluid energy harvester of claim 1, wherein: the plane of the bottom of the piezoelectric vibrator (6) on the spindle-shaped sleeve is parallel to the plane of the bottom of the wing-shaped disturbing fluid (3), the spindle-shaped sleeve (5) can rotate along with the rotation of the wing-shaped disturbing fluid (3) through a connecting spring (4), and the purpose of always keeping the plane of the bottom of the piezoelectric vibrator (6) on the spindle-shaped sleeve (5) parallel to the plane of the bottom of the wing-shaped disturbing fluid (3) is achieved.
4. The aircraft-like fluid energy harvester of claim 1, wherein: the electromagnetic coil (5-2) is wound inside the spindle-shaped sleeve (5), the spindle-shaped sleeve (5) and the sleeve end cover (5-3) are welded to achieve the sealing effect, and the electromagnetic coil (5-2) is prevented from losing the electromagnetic power generation effect due to corrosion of water.
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| CN202011050975.7A CN112332696B (en) | 2020-09-29 | 2020-09-29 | Aircraft-shaped fluid energy harvester |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011050975.7A CN112332696B (en) | 2020-09-29 | 2020-09-29 | Aircraft-shaped fluid energy harvester |
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| CN112332696A CN112332696A (en) | 2021-02-05 |
| CN112332696B true CN112332696B (en) | 2021-10-08 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11303726A (en) * | 1998-04-23 | 1999-11-02 | Murata Mfg Co Ltd | Piezoelectric wind power generator |
| CN104993737A (en) * | 2015-04-28 | 2015-10-21 | 北京航空航天大学 | Bidirectional energy collection apparatus based on flow-induced vibration |
| CN105932905A (en) * | 2016-06-02 | 2016-09-07 | 北京航空航天大学 | Energy acquisition device based on dual sinking-floating freedom degree flow-induced vibration |
| CN109768736A (en) * | 2019-03-11 | 2019-05-17 | 河海大学常州校区 | A kind of pipeline liquid flow passive detection device and method |
| CN109787512A (en) * | 2019-03-12 | 2019-05-21 | 哈尔滨工业大学 | A kind of vertical concatenation arrangement formula piezoelectric harvester increasing coupling |
| CN110176874A (en) * | 2019-06-05 | 2019-08-27 | 哈尔滨工业大学 | A kind of flutter of aerofoil is coupled with vortex-induced vibration and tunable piezoelectric harvester |
| CN110429864A (en) * | 2019-08-13 | 2019-11-08 | 哈尔滨工业大学 | A kind of compound piezoelectric harvester of bending increasing prisoner's energy ability |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015155746A1 (en) * | 2014-04-11 | 2015-10-15 | Fondazione Istituto Italiano Di Tecnologia | Device for harvesting energy from a fluidic flow including a thin film of piezoelectric material |
-
2020
- 2020-09-29 CN CN202011050975.7A patent/CN112332696B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11303726A (en) * | 1998-04-23 | 1999-11-02 | Murata Mfg Co Ltd | Piezoelectric wind power generator |
| CN104993737A (en) * | 2015-04-28 | 2015-10-21 | 北京航空航天大学 | Bidirectional energy collection apparatus based on flow-induced vibration |
| CN105932905A (en) * | 2016-06-02 | 2016-09-07 | 北京航空航天大学 | Energy acquisition device based on dual sinking-floating freedom degree flow-induced vibration |
| CN109768736A (en) * | 2019-03-11 | 2019-05-17 | 河海大学常州校区 | A kind of pipeline liquid flow passive detection device and method |
| CN109787512A (en) * | 2019-03-12 | 2019-05-21 | 哈尔滨工业大学 | A kind of vertical concatenation arrangement formula piezoelectric harvester increasing coupling |
| CN110176874A (en) * | 2019-06-05 | 2019-08-27 | 哈尔滨工业大学 | A kind of flutter of aerofoil is coupled with vortex-induced vibration and tunable piezoelectric harvester |
| CN110429864A (en) * | 2019-08-13 | 2019-11-08 | 哈尔滨工业大学 | A kind of compound piezoelectric harvester of bending increasing prisoner's energy ability |
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