CN107370417A - A kind of indirect excitation piezoelectric type pipeline stream energy accumulator - Google Patents
A kind of indirect excitation piezoelectric type pipeline stream energy accumulator Download PDFInfo
- Publication number
- CN107370417A CN107370417A CN201710729647.1A CN201710729647A CN107370417A CN 107370417 A CN107370417 A CN 107370417A CN 201710729647 A CN201710729647 A CN 201710729647A CN 107370417 A CN107370417 A CN 107370417A
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- lever
- transducer
- hole
- pin
- support bottom
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- 230000005284 excitation Effects 0.000 title claims abstract description 6
- 239000000758 substrate Substances 0.000 claims abstract description 21
- 239000012530 fluid Substances 0.000 claims abstract description 15
- 238000005452 bending Methods 0.000 claims abstract description 8
- 230000003993 interaction Effects 0.000 claims abstract description 6
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 235000014676 Phragmites communis Nutrition 0.000 claims description 3
- 238000010248 power generation Methods 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000003209 petroleum derivative Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002305 electric material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000002463 transducing effect Effects 0.000 description 1
Classifications
-
- 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 present invention relates to a kind of indirect excitation piezoelectric type pipeline stream energy accumulator, category fluid power-generation field.Square inner cylinder is housed through otic placode on inner-walls of duct, the upper lower wall panels right-hand member of inner cylinder respectively sets a gusset；Support is housed, support bottom plate is provided with square hole, two bracket bosses and two spacing otic placodes, and square hole is located at the center of support bottom plate, and two bracket bosses are provided with coaxial pin-and-hole, and bearing pin is cased with pin-and-hole on gusset；The pin-and-hole of lever is enclosed on bearing pin, and lever left arm is placed in inner cylinder, and lever left arm is longer than lever right arm, and lever left arm end is provided with jacking block in both sides up and down；Transducer is housed, transducer is formed by substrate and piezoelectric film bonding, and substrate is installed close to bracket bosses, and substrate is contacted with the jacking block on spacing otic placode and lever left arm but do not occured bending and deformation without interaction force, transducer on bracket bosses；Hollow bluff body is provided with wing plate, and wing plate is connected with lever right arm, and limited block and spring are housed on wing plate, and the other end of spring is acted against on support bottom plate.
Description
Technical field
The invention belongs to pipeline fluid technical field of power generation, and in particular to a kind of indirect excitation piezoelectric type pipeline stream capturees energy
Device, energy is provided for pepe monitoring system.
Background technology
The fluid length such as the petroleum and natural gas caused by the reason such as burn into nature force majeure and artificial pilferage
The incident of leakage of defeated pipeline in use happens occasionally, frequently pipe leakage not only cause huge economic loss,
Serious pollution is also caused to periphery natural environment simultaneously.Oil-gas pipeline was added frequently with the method for regular manual inspection in the past
To safeguard, but lay distance because of oil-gas pipeline and be often difficult in uninhabited or part of having inconvenient traffic, artificial regular visit
Find to leak and safeguarded in time.Therefore, there has been proposed polytype line leakage and burglary-resisting system.Although institute
The some pipeline fluids leakage proposed and anti-theft monitoring alarm method are more ripe in technological layer, but China's long distance pipeline at present
The application of anti-theft monitoring system obtains the popularization and application of large area also in the starting stage, not yet, and its one of the main reasons is prison
The powerup issue of examining system fails to be well solved：1. lay cable cost height and easily cut off by criminal and influence to supervise
The normal operation of examining system；2. battery powered usage time is limited, need to often change, once battery electric quantity it is insufficient and in time more
Also the remote transmission of monitoring information can not be completed when changing.In recent years, to meet the self-powered need of related wireless sensing monitoring system
Ask, it has already been proposed the turbine type microminiature flow generator of diversified forms, the problem of its is maximum is complicated, body
Product is relatively large, is unsuitable for the less occasion of pipe diameter, the TRT of some structures also has phenomena such as electromagnetic interference, pushed away
Wide application receives certain restriction.Therefore, for enable petroleum and natural gas pipe leakage and anti-theft monitoring system it is actual should
With still needing to solve its powerup issue first.
The content of the invention
The present invention proposes a kind of indirect excitation piezoelectric type pipeline stream energy accumulator, and the embodiment that the present invention uses is：Pipeline
Inwall on through otic placode inner cylinder is installed, the cross section of inner cylinder is square, and the upper lower wall panels right-hand member of inner cylinder is respectively provided with a gusset；
Support is installed through screw on gusset, support bottom plate is provided with square hole, two bracket bosses and two spacing otic placodes, square hole and is located at
At the center of support bottom plate, two bracket bosses are symmetrically distributed in the both sides of square hole, and two bracket bosses are provided with coaxial pin
Hole, bearing pin is cased with pin-and-hole；The pin-and-hole of lever is enclosed on bearing pin, and lever passes through from the square hole on support bottom plate, and lever left arm is put
In in inner cylinder, lever left arm is longer than lever right arm, and lever left arm end is provided with jacking block in both sides up and down；On bracket bosses through screw and
Pressing plate is provided with transducer, and transducer is cantilever beam structure, and transducer is formed by substrate and piezoelectric film bonding, and substrate is close to support
Boss is installed, and substrate is contacted with the jacking block on spacing otic placode and lever left arm but do not bent without interaction force, transducer
Deformation；Hollow bluff body is provided with wing plate, and wing plate is connected through screw with lever right arm, on wing plate through screw be provided with limited block and
Spring, spring are reed and installed close to wing plate that the other end of spring is acted against on support bottom plate.
When under off working state, i.e., the fluid in pipeline is not flowed, bluff body and lever are not swung, substrate and jacking block and spacing
Otic placode is contacted but not occured bending and deformation without interaction force, transducer；During work, that is, when thering is the fluid to flow through bluff body, bluff body meeting
The active force of the alternation up and down applied by fluid, so that jacking block of the lever on bearing pin reciprocally swinging, lever left arm forces
Transducer flexural deformation, the compression on piezoelectric film gradually increase；When lever resets, effect of the transducer in its own elastic force
Lower reset；In transducer reseting procedure, substrate is gradual since fixing end to be contacted with spacing otic placode, and the deflection of transducer is gradual
Reduce, but not the reversal deformation for making piezoelectric film bear tension occur；The alternating of compression increases addition and subtraction on above-mentioned piezoelectric film
Mechanical energy is converted to electric energy during small.
In the present invention, when bluff body is swung around bearing pin by fluid matasomatism and makes limited block with spring or support contacts baseplate, pressure
Maximum crushing stress on electrolemma is less than its permissible compression stress, the bending deformation quantity of transducer end is not more than allowable valueWherein：B=1- α+α β, A=α4(1-β)2-
4α3(1-β)+6α2(1- β) -4 α (1- β)+1,α=hm/ H, β=Em/Ep, hmFor substrate
Thickness, H be transducer gross thickness, EmAnd EpThe respectively Young's modulus of substrate and piezoelectricity membrane material, k31WithRespectively press
The electromechanical coupling factor and permissible compression stress of electric material, L are the length of transducer.
Advantage and characteristic：1. producing self-excited vibration using fluid lift force suffered by bluff body, exciting force and driving frequency can pass through
Turbulent yardstick is adjusted, fluid strong adaptability, simple in construction；2. transducer deflection it is controllable and work in piezoelectric film be subjected only to press
Stress, reliability are high；3. lever has Amplitude amplification function, be advantageous to improve generating capacity.
Brief description of the drawings
Fig. 1 is the structural representation of energy accumulator in a preferred embodiment of the present invention；
Fig. 2 is Fig. 1 A-A sectional views；
Fig. 3 is the structural representation of pipeline in a preferred embodiment of the present invention；
Fig. 4 is Fig. 3 left view；
Fig. 5 is the structural representation of support；
Fig. 6 is Fig. 5 left view；
Fig. 7 is the structural representation of lever.
Embodiment
Inner cylinder a2 is installed through otic placode a1 on pipeline a inwall, inner cylinder a2 cross section is square, inner cylinder a2 upper lower wall
Plate right-hand member is respectively provided with a gusset a3, and support b is provided with through screw on gusset a3, support bottom plate b1 be provided with square hole b2, two
Bracket bosses b3 and two spacing otic placode b4, square hole b2 are located at support bottom plate b1 center, and two bracket bosses b3 symmetrically divide
Cloth is provided with coaxial pin-and-hole b5, bearing pin c is cased with pin-and-hole b5 in square hole b2 both sides, two bracket bosses b3；Lever d pin
Hole d1 is enclosed on bearing pin c, and lever d passes through from the square hole b2 on support bottom plate b1, and lever left arm d2 is placed in inner cylinder a2, and lever is left
Arm d2 is longer than lever right arm d3, and lever left arm d2 ends are provided with jacking block d4 in both sides up and down；Through screw and pressing plate e on bracket bosses b3
Transducer f is installed, transducer f is cantilever beam structure, and transducer f is formed by substrate f1 and piezoelectric film f2 bondings, and substrate f1 is leaned on
Nearly bracket bosses b3 installations, substrate f1 contact with spacing otic placode b4 and lever left arm d2 jacking block d4, substrate f1 and spacing otic placode
Do not occured bending and deformation without interaction force, transducer f between b4 and lever left arm d2 jacking block d4；Set on hollow bluff body g
There are wing plate g1, wing plate g1 to be connected through screw with lever right arm d3, limited block h and spring i, spring are installed through screw on wing plate g1
I is reed and acted against close to wing plate g1 installations, the spring i other end on support bottom plate b1.
When under off working state, i.e., the fluid in pipeline a is not flowed, bluff body g and lever d are not swung, substrate f1 and jacking block
D4 and spacing otic placode b4 is contacted but not occured bending and deformation without interaction force, transducer f；During work, that is, there is fluid to flow through blunt
During body g, the active force for the alternation up and down that bluff body g can be applied by fluid, so that lever d is left around bearing pin c reciprocally swingings, lever
Jacking block d4 on arm d2 forces transducer f flexural deformations, and the compression on piezoelectric film f2 gradually increases；When lever d resets, transducing
Device f resets in the presence of its own elastic force；In transducer f reseting procedures, substrate f1 since fixing end it is gradual with it is spacing
Otic placode b4 is contacted, and transducer f deflection gradually reduces, but not the reversal deformation for making piezoelectric film f2 bear tension occurs；
The alternating increase of compression by mechanical energy during reducing with being converted to electric energy on above-mentioned piezoelectric film f2.
In the present invention, bluff body g is swung around bearing pin c by fluid matasomatism and limited block h is contacted with spring i or support bottom plate b1
When, the maximum crushing stress on piezoelectric film f2 is less than its permissible compression stress, the bending deformation quantity of transducer f ends is not more than allowable valueWherein：B=1- α+α β, A=α4(1-β)2-
4α3(1-β)+6α2(1- β) -4 α (1- β)+1,α=hm/ H, β=Em/Ep, hmFor substrate
F1 thickness, H be transducer f gross thickness, EmAnd EpRespectively substrate f1 and piezoelectric film f2 materials Young's modulus, k31With
The respectively electromechanical coupling factor and permissible compression stress of piezoelectric, L are transducer f length.
Claims (1)
- A kind of 1. indirect excitation piezoelectric type pipeline stream energy accumulator, it is characterised in that：Inner cylinder is housed through otic placode on the inwall of pipeline, it is interior The cross section of cylinder is square, and the upper lower wall panels right-hand member of inner cylinder respectively sets a gusset；Support, support bottom are installed through screw on gusset Plate is provided with square hole, two bracket bosses and two spacing otic placodes, and square hole is located at the center of support bottom plate, two bracket bosses The both sides of square hole are symmetrically distributed in, two bracket bosses are provided with coaxial pin-and-hole, bearing pin is cased with pin-and-hole；The pin-and-hole of lever is enclosed on On bearing pin, lever is passed through from the square hole on support bottom plate, and lever left arm is placed in inner cylinder, and lever left arm is longer than lever right arm, thick stick Bar left arm end is provided with jacking block in both sides up and down；Transducer is installed through screw and pressing plate on bracket bosses, transducer is cantilever beam Structure, transducer are formed by substrate and piezoelectric film bonding, and substrate is installed close to bracket bosses, and substrate and spacing otic placode and lever are left Jacking block on arm is contacted but not occured bending and deformation without interaction force, transducer；Hollow bluff body is provided with wing plate, wing plate warp Screw is connected with lever right arm, and limited block and spring are provided with through screw on wing plate, and spring is reed and installed close to wing plate, bullet The other end of spring is acted against on support bottom plate；Bluff body is swung around bearing pin by fluid matasomatism and makes limited block and spring or support bottom plate During contact, the maximum crushing stress on piezoelectric film is less than its permissible compression stress, the bending deformation quantity of transducer end no more than allowable Value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710729647.1A CN107370417B (en) | 2017-08-17 | 2017-08-17 | Indirect excitation piezoelectric pipeline flow energy harvester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710729647.1A CN107370417B (en) | 2017-08-17 | 2017-08-17 | Indirect excitation piezoelectric pipeline flow energy harvester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107370417A true CN107370417A (en) | 2017-11-21 |
| CN107370417B CN107370417B (en) | 2023-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710729647.1A Active CN107370417B (en) | 2017-08-17 | 2017-08-17 | Indirect excitation piezoelectric pipeline flow energy harvester |
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| Country | Link |
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| CN (1) | CN107370417B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110932599A (en) * | 2019-05-18 | 2020-03-27 | 浙江师范大学 | Driving vibration-induced wind driven generator |
| CN112202363A (en) * | 2020-09-29 | 2021-01-08 | 长春工业大学 | Pendulum type multi-vibrator series piezoelectric energy harvester |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010007265A1 (en) * | 1999-12-09 | 2001-07-12 | Itzhaky Itzhak M. | Piezoelectric actuatable valve |
| CN205679601U (en) * | 2016-06-15 | 2016-11-09 | 浙江师范大学 | A kind of river monitoring device based on piezoelectric stack |
-
2017
- 2017-08-17 CN CN201710729647.1A patent/CN107370417B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010007265A1 (en) * | 1999-12-09 | 2001-07-12 | Itzhaky Itzhak M. | Piezoelectric actuatable valve |
| CN205679601U (en) * | 2016-06-15 | 2016-11-09 | 浙江师范大学 | A kind of river monitoring device based on piezoelectric stack |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110932599A (en) * | 2019-05-18 | 2020-03-27 | 浙江师范大学 | Driving vibration-induced wind driven generator |
| CN110932599B (en) * | 2019-05-18 | 2021-11-12 | 浙江师范大学 | Driving vibration-induced wind driven generator |
| CN112202363A (en) * | 2020-09-29 | 2021-01-08 | 长春工业大学 | Pendulum type multi-vibrator series piezoelectric energy harvester |
| CN112202363B (en) * | 2020-09-29 | 2022-06-17 | 长春工业大学 | Pendulum multi-vibrator series piezoelectric energy harvester |
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| Publication number | Publication date |
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| CN107370417B (en) | 2023-06-16 |
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