CN110932599A - Driving vibration-induced wind driven generator - Google Patents
Driving vibration-induced wind driven generator Download PDFInfo
- Publication number
- CN110932599A CN110932599A CN201910459664.7A CN201910459664A CN110932599A CN 110932599 A CN110932599 A CN 110932599A CN 201910459664 A CN201910459664 A CN 201910459664A CN 110932599 A CN110932599 A CN 110932599A
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- shape limiting
- wedge block
- reed
- substrate
- upper beam
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- 235000014676 Phragmites communis Nutrition 0.000 claims abstract description 27
- 239000000758 substrate Substances 0.000 claims abstract description 20
- 238000005452 bending Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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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
- H02N2/186—Vibration harvesters
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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
Abstract
The invention relates to a driving vibration-induced wind driven generator, and belongs to the technical field of new energy. The bracket is provided with an upper beam, a lower beam and two cross beams connected with the upper beam and the lower beam, the two cross beams are arranged at one ends of the upper beam and the lower beam, a gap is reserved between the two cross beams, and the other ends of the upper beam and the lower beam are provided with a baffle; the base plate provided with the stud is provided with a reed through a screw and a fixed wedge block, the reed is connected with a bluff body lug plate after passing through a gap between two cross beams, and the lug plate is arranged on an upper beam and a lower beam through half shafts at two ends of the lug plate and bearings on the half shafts; the stud is provided with a movable wedge block through a nut, the inclined surfaces of the movable wedge block and the fixed wedge block are contacted with each other, and the other side surface of the movable wedge block is propped against the cross beam; the two ends of a pressure plate of the shape limiting frame are provided with shape limiting blocks with shape limiting surfaces, the pressure plate is arranged on the cross beam and presses one end of the piezoelectric vibrator on the cross beam, and the piezoelectric vibrator is formed by bonding a substrate and a piezoelectric sheet; the distance between two shape limiting blocks of the same shape limiting frame is wider than that of the piezoelectric plate and narrower than that of the substrate, the free end of the substrate abuts against the lug plate of the blunt body, and the fixed end of the substrate is contacted and tangent with the shape limiting surface.
Description
Technical Field
The invention belongs to the technical field of new energy, and particularly relates to a driving vibration-induced wind driven generator for recovering wind kinetic energy in a tunnel.
Background
Tunnels have become an important component of current road and rail networks. In order to ensure that the automobiles and trains can run in the same way normally and safely and realize the real-time monitoring of the tunnel environment and the running vehicles, various instruments and lighting facilities need to be installed in the tunnel, and therefore, corresponding power supply facilities also need to be arranged in the tunnel. If adopt traditional cable power supply, the degree of difficulty of laying and follow-up maintenance of cable is great, the cost is higher: if the battery is adopted for power supply, the battery has limited service life and needs to be replaced frequently, so that the use is extremely inconvenient, especially in remote mountainous areas.
Disclosure of Invention
The invention provides a driving vibration-induced wind driven generator, which adopts the following implementation scheme: the bracket is provided with an upper beam, a lower beam and two cross beams connected with the upper beam and the lower beam, the inner walls of the upper beam and the lower beam are both provided with a slideway, the two cross beams are arranged at one ends of the upper beam and the lower beam, a gap is reserved between the two cross beams, and the other ends of the upper beam and the lower beam are provided with a baffle plate through screws; the base plate provided with the stud is provided with a reed through a screw and a fixed wedge block, the reed passes through a gap between two cross beams, the other end of the reed is connected with an ear plate of the bluff body through the screw, both ends of the ear plate are provided with half shafts provided with bearings, the bearings are arranged in slideways of an upper beam and a lower beam, the bluff body is a hollow cylindrical shell, and the bluff body is arranged close to the baffle; the stud is provided with a movable wedge block through a nut, the movable wedge block is contacted with the inclined plane of the fixed wedge block, and the other side surface of the movable wedge block opposite to the inclined plane is propped against the cross beam; the two ends of a pressure plate of the shape limiting frame are provided with shape limiting blocks with shape limiting surfaces, the pressure plate is installed on the cross beam through screws, one end of the piezoelectric vibrator is pressed on the cross beam in a pressing mode, the piezoelectric vibrator is formed by bonding a substrate and a piezoelectric sheet, and the substrate at the free end of the piezoelectric vibrator abuts against an ear plate of the blunt body; the distance between two shape limiting blocks of the same shape limiting frame is wider than that of the piezoelectric plate and narrower than that of the substrate, and the substrate at the fixed end of the piezoelectric vibrator is contacted and tangent with the shape limiting surface; when the reed does not work, the symmetrical central layer in the thickness direction of the reed, the central line of the blunt body and the symmetrical central layer in the width direction of the baffle are positioned in the same vertical plane; the ratio of the width of the baffle to the diameter of the bluff body, namely the width-to-diameter ratio, is 1-3, and the ratio of the minimum distance from the outer surface of the bluff body to the baffle to the diameter of the bluff body, namely the diameter-to-diameter ratio, is 0-3.
In the invention, wind is blown to the blunt body and the baffle from the fixed end of the reed, the wind generates a Karman vortex street after flowing through the blunt body, the alternating generation and falling of the vortex can lead the airflow pressure at the front side and the rear side of the blunt body to be changed alternately, thus generating an exciting force which leads the blunt body and the reed to swing in a reciprocating way, when the reed swings, the piezoelectric vibrator is forced to bend and deform in the direction that leads the piezoelectric sheet to bear the pressure stress, and the wind energy is converted into electric energy in the reciprocating bending and deformation process of the piezoelectric vibrator; when wind is blocked by the baffle after passing through the bluff body, the flow direction, the vortex form and the dynamic characteristic of the wind are changed, so that the amplitude of the exciting force is changed, and the vibration amplitude is increased or reduced; when the oscillating amplitude of the bluff body is large enough, the base plate of the piezoelectric vibrator is pressed on the limiting surface through the reed, and the pressure stress of each point in the length direction of the piezoelectric sheet is equal and smaller than the allowable value, so that the piezoelectric vibrator has larger power generation capacity and higher reliability.
In the invention, the nut on the stud and the movable wedge block are used for adjusting the tension and the bending rigidity of the reed, so that the fundamental frequency of a vibration system formed by the blunt body and the reed, namely a generator, is changed, the fundamental frequency of the generator is adapted to the vortex-induced vibration frequency, and resonance is realized; in addition, the ratio of the pitch to the diameter is adjusted by the mounting position of the baffle, so that the effective control of the amplitude of the blunt body is realized, namely the amplitude is increased or reduced.
In the invention, the thickness of the substrate is equal to that of the piezoelectric sheet, and the radius of the shape limiting surface is
Wherein h is the total thickness of the piezoelectric vibrator, β ═ Em/Ep，EmAnd EpThe modulus of elasticity, T, of the substrate and piezoelectric sheet material, respectivelypAnd k31Respectively, the allowable stress and the electromechanical coupling coefficient of the piezoelectric sheet material.
① is easy to change the generator natural frequency through the rigidity adjustment of the reed, making it adapt to the vortex-induced vibration frequency, improving the response characteristic and generating ability, ② baffle behind the blunt body can effectively adjust the coupling vibration response characteristic of the blunt body, easily obtaining the needed blunt body vibration amplification ratio, flow rate adaptability and generating ability through adjusting the distance, scale and other parameters, ③ piezoelectric vibrator one-way bending deformation and the deformation amount is controllable, the stress distribution is uniform, so the generating ability is strong, and the reliability is high.
Drawings
FIG. 1 is a schematic diagram of a generator according to a preferred embodiment of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is an enlarged view of section I of FIG. 2;
FIG. 4 is a schematic view of a seat plate structure according to a preferred embodiment of the present invention;
FIG. 5 is a top view of FIG. 4;
FIG. 6 is a schematic structural view of a bracket according to a preferred embodiment of the present invention;
FIG. 7 is a cross-sectional view B-B of FIG. 6;
FIG. 8 is a schematic structural view of a restraint frame according to a preferred embodiment of the present invention;
FIG. 9 is a top view of FIG. 8
FIG. 10 is a schematic structural diagram of a blunt body according to a preferred embodiment of the present invention.
Detailed Description
The bracket a is provided with an upper beam a1, a lower beam a2 and two cross beams a3 for connecting the upper beam a1 and the lower beam a2, the inner walls of the upper beam a1 and the lower beam a2 are both provided with a slideway a5, the two cross beams a3 are arranged at one ends of an upper beam a1 and the lower beam a2, a gap a4 is reserved between the two cross beams a3, and the other ends of the upper beam a1 and the lower beam a2 are provided with a baffle b through screws; a spring c is arranged on a seat plate g provided with a stud g1 through a screw and a fixed wedge h, the spring c passes through a gap a4 between two cross beams a3, the other end of the spring c is connected with an ear plate e1 of a bluff body e through a screw, both ends of the ear plate e1 are provided with half shafts e2 provided with bearings f, the bearings f are arranged in a slide way a5 of an upper beam a1 and a lower beam a2, the bluff body e is a hollow cylindrical shell, and the bluff body e is arranged close to a baffle b; a movable wedge i is mounted on the stud g1 through a nut j, the inclined surfaces of the movable wedge i and the fixed wedge h are in contact with each other, and the other side surface, opposite to the inclined surface of the movable wedge i, abuts against the beam a 3; both ends of a pressure plate k1 of the shape limiting frame k are provided with shape limiting blocks k2 with shape limiting surfaces k3, the pressure plate k1 is installed on a cross beam a3 through screws, one end of a piezoelectric vibrator d is connected to a cross beam a3 in a pressing mode, the piezoelectric vibrator d is formed by bonding a substrate d1 and a piezoelectric sheet d2, and one side of the substrate d1 at the free end of the piezoelectric vibrator d abuts against an ear plate e1 of a blunt body e; the distance between two limiting blocks k2 of the same limiting frame k is wider than that of a piezoelectric sheet d2 and narrower than that of a substrate d1, and a substrate d1 at the fixed end of a piezoelectric vibrator d is contacted and tangent with a limiting surface k 3; when the reed is not in work, the symmetrical central layer in the thickness direction of the reed c, the central line of the blunt body e and the symmetrical central layer in the width direction of the baffle b are positioned in the same vertical plane, namely a horizontal plane z in the figure 2; the ratio of the width H of the baffle b to the diameter D of the bluff body e, namely the width ratio H/D, is 1-3, and the ratio of the minimum distance L between the outer surface of the bluff body e and the baffle b to the diameter D of the bluff body e, namely the diameter ratio L/D, is 0-3.
In the invention, wind is blown to the blunt body e and the baffle b from the fixed end of the reed c, the wind generates a Karman vortex street after flowing through the blunt body e, the alternating generation and falling of the vortex can lead the airflow pressure at the front side and the rear side of the blunt body e to be changed alternately, thus generating an excitation force which leads the blunt body e and the reed c to swing in a reciprocating way, when the reed c swings, the piezoelectric vibrator d is forced to bend and deform towards the direction which leads the piezoelectric sheet d2 to bear the pressure stress, and the wind energy is converted into electric energy in the reciprocating bending deformation process of the piezoelectric vibrator d; when wind is hindered by the baffle b after passing through the bluff body e, the flow direction, the vortex form and the dynamic characteristic of the wind are changed, so that the amplitude of the exciting force is changed, and the vibration amplitude is increased or reduced; when the swing amplitude of the blunt body e is large enough, the base plate d1 of the piezoelectric vibrator d is pressed against the limiting surface k3 through the reed c, and the pressure stress of each point in the length direction of the piezoelectric sheet d2 is equal and smaller than the allowable value, so that the piezoelectric vibrator has large power generation capacity and high reliability.
In the invention, the nut j on the stud g1 and the movable wedge i are used for adjusting the tension and the bending rigidity of the reed c, so that the fundamental frequency of a vibration system, namely a generator, formed by the blunt body e and the reed c is changed, the fundamental frequency of the generator is adapted to the vortex-induced vibration frequency, and resonance is realized; further, the ratio of the pitch to the diameter is adjusted by the mounting position of the baffle b, and the amplitude of the blunt body e is effectively controlled even if the amplitude is increased or decreased.
In the invention, the thickness of the substrate d1 is equal to that of the piezoelectric sheet d2, and the radius of the shape limiting surface k3 is
Wherein h is the total thickness of the piezoelectric vibrator d, and β ═ Em/Ep，EmAnd EpThe elastic moduli, T, of the materials of the substrate d1 and the piezoelectric sheet d2pAnd k31The allowable stress and electromechanical coupling coefficient of the piezoelectric sheet d2 material, respectively.
Claims (1)
1. The utility model provides a driving vibration-induced wind driven generator which characterized in that: the bracket is provided with an upper beam, a lower beam and two cross beams connected with the upper beam and the lower beam, the inner walls of the upper beam and the lower beam are both provided with a slideway, the two cross beams are arranged at one ends of the upper beam and the lower beam, a gap is reserved between the two cross beams, and the other ends of the upper beam and the lower beam are provided with a baffle; the base plate provided with the stud is provided with a reed through a screw and a fixed wedge block, the reed passes through a gap between two cross beams, the other end of the reed is connected with an ear plate of the blunt body, both ends of the ear plate are provided with half shafts provided with bearings, the bearings are arranged in a slideway of an upper beam or a lower beam, the blunt body is a hollow cylindrical shell, and the blunt body is arranged close to the baffle; the stud is provided with a movable wedge block through a nut, the movable wedge block is contacted with the inclined plane of the fixed wedge block, and the other side surface of the movable wedge block opposite to the inclined plane is propped against the cross beam; the two ends of a pressure plate of the shape limiting frame are provided with shape limiting blocks with shape limiting surfaces, the pressure plate is arranged on the cross beam and presses one end of the piezoelectric vibrator on the cross beam, the piezoelectric vibrator is formed by bonding a substrate and a piezoelectric sheet, and the substrate at the free end of the piezoelectric vibrator is abutted against an ear plate of the blunt body; the distance between two shape limiting blocks of the same shape limiting frame is wider than that of the piezoelectric plate and narrower than that of the substrate, and the substrate at the fixed end of the piezoelectric vibrator is contacted and tangent with the shape limiting surface; when the reed does not work, the symmetrical central layer in the thickness direction of the reed, the central line of the blunt body and the symmetrical central layer in the width direction of the baffle are positioned in the same vertical plane; the ratio of the width of the baffle to the diameter of the bluff body, namely the width-to-diameter ratio, is 1-3, and the ratio of the distance from the outer surface of the bluff body to the baffle to the diameter of the bluff body, namely the diameter-to-diameter ratio, is 0-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910459664.7A CN110932599B (en) | 2019-05-18 | 2019-05-18 | Driving vibration-induced wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910459664.7A CN110932599B (en) | 2019-05-18 | 2019-05-18 | Driving vibration-induced wind driven generator |
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| Publication Number | Publication Date |
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| CN110932599A true CN110932599A (en) | 2020-03-27 |
| CN110932599B CN110932599B (en) | 2021-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910459664.7A Active CN110932599B (en) | 2019-05-18 | 2019-05-18 | Driving vibration-induced wind driven generator |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205681333U (en) * | 2016-06-15 | 2016-11-09 | 浙江师范大学 | A kind of auto-excitation type pipeline fluid piezoelectric harvester |
| CN107355332A (en) * | 2017-08-17 | 2017-11-17 | 浙江师范大学 | A kind of Frequency Adjustable current cause the generator that shakes |
| CN107370417A (en) * | 2017-08-17 | 2017-11-21 | 浙江师范大学 | A kind of indirect excitation piezoelectric type pipeline stream energy accumulator |
| CN107395058A (en) * | 2017-08-17 | 2017-11-24 | 浙江师范大学 | A kind of step-by-step excitation formula piezoelectric fluid generator |
| CN207234694U (en) * | 2017-09-03 | 2018-04-13 | 朱慨迅 | One kind is without battery environmental protection remote controler |
| CN109687766A (en) * | 2019-01-30 | 2019-04-26 | 浙江师范大学 | A kind of off-resonance piezoelectric generator of gyromagnet excitation |
-
2019
- 2019-05-18 CN CN201910459664.7A patent/CN110932599B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205681333U (en) * | 2016-06-15 | 2016-11-09 | 浙江师范大学 | A kind of auto-excitation type pipeline fluid piezoelectric harvester |
| CN107355332A (en) * | 2017-08-17 | 2017-11-17 | 浙江师范大学 | A kind of Frequency Adjustable current cause the generator that shakes |
| CN107370417A (en) * | 2017-08-17 | 2017-11-21 | 浙江师范大学 | A kind of indirect excitation piezoelectric type pipeline stream energy accumulator |
| CN107395058A (en) * | 2017-08-17 | 2017-11-24 | 浙江师范大学 | A kind of step-by-step excitation formula piezoelectric fluid generator |
| CN207234694U (en) * | 2017-09-03 | 2018-04-13 | 朱慨迅 | One kind is without battery environmental protection remote controler |
| CN109687766A (en) * | 2019-01-30 | 2019-04-26 | 浙江师范大学 | A kind of off-resonance piezoelectric generator of gyromagnet excitation |
Non-Patent Citations (2)
| Title |
|---|
| U.JAVED: "Characteristics and comparative analysis of piezoelectric-electromagnetic energy harvesters from vortex-induced oscillations", 《SPRINGER NATURE B.V. 2019》 * |
| 王淑云 等: "一种脱涡纵振式压电管道气流俘能器", 《机械工程学报》 * |
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| CN110932599B (en) | 2021-11-12 |
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Effective date of registration: 20230921 Address after: 230000 Room 203, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province Patentee after: Hefei Jiuzhou Longteng scientific and technological achievement transformation Co.,Ltd. Address before: 321004 Zhejiang Normal University, 688 Yingbin Avenue, Wucheng District, Jinhua City, Zhejiang Province Patentee before: ZHEJIANG NORMAL University |
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