CN106100444B - A kind of piezo fluid generator - Google Patents
A kind of piezo fluid generator Download PDFInfo
- Publication number
- CN106100444B CN106100444B CN201610459316.6A CN201610459316A CN106100444B CN 106100444 B CN106100444 B CN 106100444B CN 201610459316 A CN201610459316 A CN 201610459316A CN 106100444 B CN106100444 B CN 106100444B
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- piezoelectric
- plate
- piezoelectric vibrator
- boss
- dividing plate
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- 239000012530 fluid Substances 0.000 title claims abstract description 22
- 238000007906 compression Methods 0.000 claims abstract description 16
- 210000000683 abdominal cavity Anatomy 0.000 claims abstract description 15
- 230000006835 compression Effects 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 claims abstract description 12
- 239000000758 substrate Substances 0.000 claims abstract description 12
- 238000007912 intraperitoneal administration Methods 0.000 claims abstract description 6
- 238000010276 construction Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 6
- 238000012544 monitoring process Methods 0.000 description 8
- 238000004904 shortening Methods 0.000 description 4
- 230000010355 oscillation Effects 0.000 description 3
- 229910000906 Bronze Inorganic materials 0.000 description 2
- 208000018672 Dilatation Diseases 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 210000001015 abdomen Anatomy 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000005303 weighing Methods 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
Landscapes
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The present invention relates to a kind of piezo fluid generator, belong to piezo-electric generating technical field.Provided with big cylinder, right side provided with two pieces of otic placodes on the left of main body dividing plate, plate end is connected through side plate；Left boss and right boss are respectively equipped with dividing plate and side plate；End cap cover plate with small cylinder is mounted in big cylinder end；Contact pick-up disk body is placed in intraperitoneal, bearing pin and stretched out through dividing plate from abdominal cavity, and end part of pin shaft is equipped with connecting plate, bearing pin and is cased with spring, and both ends of the spring is acted against on disk body and dividing plate respectively；Piezoelectric vibrator is formed by metal substrate is Nian Jie with piezoelectric chip, and the metal substrate two ends of two piezoelectric vibrators are all separately mounted on the boss of left and right, middle be all arranged on connecting plate.Characteristic and advantage：Straight piezoelectric vibrator is mounted to warp architecture, the generator along pipe lengths stretching vibration is formed, structure and technique is simple, cost is low；Piezoelectric chip is only by the compression of range-controllable, and reliability is high；Easily generated energy is improved by increasing piezoelectric vibrator number and length.
Description
Technical field
The invention belongs to field of piezoelectric generation, and in particular to a kind of piezo fluid generator, be oil-gas pipeline monitoring system
System power supply.
Background technology
Because spontaneous corrosion, nature force majeure, especially it is artificial steal etc. caused by gas oil pipe leakage event when have
Occur, not only cause huge economic loss, while also causing serious pollution to its periphery natural environment.In the past, often
Oil-gas pipeline is safeguarded using the method for regular manual inspection, but because its lay distance and often in uninhabited or
In place of having inconvenient traffic, regular visit is difficult to find leakage and on-call maintenance in time, therefore is let out there has been proposed polytype pipeline
Leakage monitoring or burglary-resisting system.Though some pipe leakages or anti-theft monitoring alarm method that are proposed are more ripe in technological layer,
But the application of current China's long distance pipeline anti-theft monitoring system is used widely also in the starting stage, not yet, its reason it
One is that its powerup issue is not well solved：Using the method cost height for laying cable and by criminal's cut-out
Influence the normal operation of monitoring system；And when being powered using battery, use time is limited, need to often change, once battery electric quantity is not
The remote transmission of monitoring information can not be also completed when foot and not replacing in time.Therefore, to make gas oil pipe leakage and burglary-resisting system
It is used practically, it is necessary to solve its powerup issue first.In recent years, to meet the self-powereds of all kinds of wireless sensing monitoring systems
Demand, there has been proposed a kind of new miniature piezoelectric TRT, it have it is simple in construction, do not generate heat, without electromagnetic interference, collection
The features such as Cheng Huagao, powered particularly suitable for wireless sensing monitoring system.However, existing oil-gas pipeline piezoelectric generating device is mostly
Rotate what driving piezoelectric vibrator oscillator generated electricity by fluid turbine, complicated, volume is big, is unsuitable for the relatively small pipe of diameter
Road；Meanwhile, piezoelectric vibrator compound bending deforms, bears alternately drawing-compression in work, and piezoelectric chip is fragile when tension is excessive
Broken, reliability is low.
The content of the invention
The power supply problem monitored for oil/gas pipe line and existing piezoelectric generating device apply upper limitation, the present invention
Propose a kind of piezo fluid generator.The embodiment that the present invention is used is：Set on the left of the dividing plate of main body provided with big cylinder, right side
There are two pieces of otic placodes being parallel to each other, two end part of lug plate is connected through side plate；Dividing plate is provided with left boss and side plate provided with the right side
Boss；The cover plate of end cap with small cylinder is arranged on the end of big cylinder through screw and forms two interconnected neck chambers and abdomen
Chamber, small tube inner chamber is that neck chamber, big tube inner chamber are abdominal cavity；The disk body of contact pick-up be placed in intraperitoneal, contact pick-up bearing pin through dividing plate from
Abdominal cavity is stretched out, and end part of pin shaft is provided with connecting plate through nut；Balancing spring is cased with bearing pin, balancing spring two ends are acted against respectively
On disk body and dividing plate；Piezoelectric vibrator is made up of metal substrate with its unilateral two be bonded piezoelectric chip；Two piezoelectric vibrators
The two ends of metal substrate be all separately mounted to through screw and briquetting on left boss and right boss, it is middle all to pacify through screw and briquetting
On connecting plate, two piezoelectric vibrators are separately mounted to two on the both sides up and down of left boss and right boss, piezoelectric vibrator
Piezoelectric chip is arranged symmetrically in the left and right sides of connecting plate；It is flat construction and length under nature before piezoelectric vibrator is installed
More than the distance of dividing plate and side sheet room, piezoelectric vibrator install after for warp architecture and piezoelectric chip bears compression；Piezoelectric vibrator
The upper part in connecting plate left and right ends respectively constitutes generator unit I and generator unit II, generator unit I and generator unit II
In piezoelectric vibrator distinguish rectified bridge and be connected with the power circuit on circuit board.
When there is fluid stream out-of-date, the vibration of neck cavity fluid, intraperitoneal fluid to generation restoring force；Fluid wave wavelength is long-range
Vibrational energy is concentrated at neck chamber when abdominal cavity yardstick, so that neck intracavitary effective mass and intraperitoneal fluid constitute one-dimensional vibration system
Unite and produce resonance, intraperitoneal fluid oscillation is delivered on connecting plate through contact pick-up again, forces piezoelectric vibrator dilatation simultaneously
Fluid dynamic energy is converted into electric energy：When contact pick-up is to left movement, generator unit I shortens, its internal piezoelectric chip institute compression chord
Increase, generator unit II elongations, its internal piezoelectric chip institute compression chord reduction；Conversely, when contact pick-up is moved right, generating electricity single
First I elongations, the compression chord reduction of piezoelectric chip institute, generator unit II shortens, its interior piezoelectric chip institute compression chord increase；It is above-mentioned
During generator unit I and II alternately extend and shortened, piezoelectric vibrator elongation in a generator unit reaches maximum, reached
During straightened condition, shortening amount is up to maximum in another generator unit, and shortening amount is mutually restricted with elongation, so that it is guaranteed that piezo crystals
Piece bears rational compression all the time, and reliability is high.
In the present invention, to improve the adaptive capacity to environment and reliability of generator, under nominal flow rate and connecting plate be in it is dynamic
During equilbrium position, generator unit I is identical with generator unit II state；Piezoelectric chip is 0.1mm~0.2mm PZT4, metal
Substrate is beryllium-bronze, and the ratio between metal substrate and piezoelectric chip thickness are 1~2.5.
Advantage and characteristic：1. straight piezoelectric vibrator is become by warp architecture by the method for installation, shaken using cavity fluid
Swing the TRT to be formed along pipe lengths stretching vibration, structure and manufacture craft is simple, cost is low；2. piezoelectric chip is only
It is operated under compressive stress state and compression range-controllable, reliability is high；3. it is easy to by increasing piezoelectric vibrator quantity and length
Method improve generated energy.
Brief description of the drawings
Fig. 1 is the section of structure of generator in a preferred embodiment of the present invention；
Fig. 2 is Fig. 1 A portions enlarged drawing；
Fig. 3 is Fig. 1 left view；
Fig. 4 is the structural representation before piezoelectric vibrator is installed in a preferred embodiment of the present invention.
Embodiment
Main body b dividing plate b2 left side is provided with two pieces of otic placode b4 being parallel to each other, two otic placode provided with big cylinder b1, right side
B4 ends are through side plate b5 connections；Dividing plate b2 is provided with right boss b6 provided with left boss b3, side plate b5；End cap with small cylinder a1
A cover plate a2 is arranged on big cylinder b1 end through screw and forms two interconnected neck chamber C1 and abdominal cavity C2, small cylinder a1's
Inner chamber is that neck chamber C1, big cylinder b1 inner chamber are abdominal cavity C2；Contact pick-up c disk body c1 is placed in abdominal cavity C2, contact pick-up c bearing pin c2
Stretched out through dividing plate b2 from abdominal cavity C2, bearing pin c2 ends are provided with connecting plate f through nut g；Balancing spring d is cased with bearing pin c2, is put down
Weighing apparatus spring d two ends are acted against on disk body c1 and dividing plate b2 respectively；Piezoelectric vibrator h is unilateral be bonded with it by metal substrate h1
Two piezoelectric chip h2 are constituted；Two piezoelectric vibrator h metal substrate h1 two ends are all separately mounted to a left side through screw and briquetting e
On boss b3 and right boss b6, middle to be all arranged on through screw and briquetting e on connecting plate f, two piezoelectric vibrator h are separately mounted to
Two piezoelectric chip h2 on left boss b3 and right boss b6 both sides up and down, piezoelectric vibrator h are arranged symmetrically in a connecting plate f left side
Right both sides；Piezoelectric vibrator h is more than for flat construction and length L1 the distance between dividing plate b2 and side plate b5 under nature before installing
L2, piezoelectric vibrator h install after for warp architecture and piezoelectric chip h2 bears compression；It is left in connecting plate f on piezoelectric vibrator h
The part of right both sides respectively constitutes the piezoelectric vibrator h in generator unit I and generator unit II, generator unit I and generator unit II
Rectified bridge is connected with the power circuit on circuit board respectively.
When there is fluid stream out-of-date, fluid oscillation in neck chamber C1 and in abdominal cavity C2 fluid to generation restoring force；Fluid wave ripple
Long vibrational energy when being much larger than abdominal cavity C2 yardsticks is concentrated at neck chamber C1, so that fluid in effective mass and abdominal cavity C2 in neck chamber C1
Constitute one-dimensional vibrational system and produce resonance, the fluid oscillation in abdominal cavity C2 is delivered on connecting plate f through contact pick-up c again, is forced
Fluid dynamic energy is simultaneously converted into electric energy by piezoelectric vibrator h dilatations：When contact pick-up c is to left movement, generator unit I shortens, in it
The compression chord increase of piezoelectric chip h2 institutes of portion, generator unit II elongations, its internal piezoelectric chip h2 institutes compression chord reduction；Instead
It, when contact pick-up c is moved right, generator unit I elongations, the reduction of piezoelectric chip institute compression chord, generator unit II shortens, in it
The compression chord increase of piezoelectric chip institute；During above-mentioned generator unit I and II alternately extend and shortened, piezoelectric vibrator h is at one
When elongation reaches maximum, reaches straightened condition in generator unit, shortening amount reaches maximum, shortening amount in another generator unit
Mutually restricted with elongation, so that it is guaranteed that piezoelectric chip bears rational compression all the time, reliability is high.
In the present invention, to improve under adaptive capacity to environment, generating capacity and the reliability of generator, nominal flow rate and connecting
When plate f is in dynamic equilibrium position, generator unit I is identical with generator unit II state；Piezoelectric chip h2 is 0.1mm~0.2mm
PZT4, metal substrate h1 be beryllium-bronze, the ratio between metal substrate h1 and piezoelectric chip h2 thickness is 1~2.5.
Claims (1)
1. a kind of piezo fluid generator, it is characterised in that：It is mutual provided with two pieces provided with big cylinder, right side on the left of the dividing plate of main body
Parallel otic placode, two end part of lug plate is connected through side plate；Dividing plate is provided with right boss provided with left boss, side plate；With small
The cover plate of the end cap of cylinder is arranged on big cylinder end through screw and forms two interconnected neck chambers and abdominal cavity, and small tube inner chamber is neck
Chamber, big tube inner chamber are abdominal cavity；The disk body of contact pick-up is placed in intraperitoneal, bearing pin and stretched out through dividing plate from abdominal cavity, and end part of pin shaft is equipped with company
Balancing spring is cased with fishplate bar, bearing pin, balancing spring two ends are acted against on disk body and dividing plate respectively；Piezoelectric vibrator is by metal substrate
Constituted with its unilateral two be bonded piezoelectric chip, the metal substrate two ends of two piezoelectric vibrators are all distinguished through screw and briquetting
On left boss and right boss, it is middle be all arranged on through screw and briquetting on connecting plate, two piezoelectric vibrators are respectively mounted
Two piezoelectric chips on the both sides up and down of left boss and right boss, piezoelectric vibrator are arranged symmetrically in the left and right two of connecting plate
Side；It is the distance that flat construction and length are more than dividing plate and side sheet room, piezoelectric vibrator peace under nature before piezoelectric vibrator is installed
It is warp architecture and piezoelectric chip bears compression after dress；Part difference structure in the connecting plate left and right sides on piezoelectric vibrator
Into generator unit I and generator unit II, the piezoelectric vibrator in generator unit I and generator unit II distinguishes rectified bridge and circuit board
On power circuit be connected；Under nominal flow rate and when connecting plate is in dynamic equilibrium position, generator unit I and generator unit II shape
State is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610459316.6A CN106100444B (en) | 2016-06-15 | 2016-06-15 | A kind of piezo fluid generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610459316.6A CN106100444B (en) | 2016-06-15 | 2016-06-15 | A kind of piezo fluid generator |
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| Publication Number | Publication Date |
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| CN106100444A CN106100444A (en) | 2016-11-09 |
| CN106100444B true CN106100444B (en) | 2017-10-20 |
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| CN201610459316.6A Expired - Fee Related CN106100444B (en) | 2016-06-15 | 2016-06-15 | A kind of piezo fluid generator |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106998124B (en) * | 2017-05-11 | 2019-01-22 | 唐智科技湖南发展有限公司 | A kind of machinery-air cavity-electronics joint generalized resonance formula pneumatic electric generator |
| CN110752779B (en) * | 2019-05-18 | 2021-10-08 | 浙江师范大学 | Telescopic pipeline flow generator |
| CN110752780B (en) * | 2019-05-18 | 2021-10-08 | 浙江师范大学 | Piezoelectric energy harvester for pipeline airflow detection system |
| CN110752776B (en) * | 2019-05-18 | 2021-10-08 | 浙江师范大学 | Telescopic pipeline flows energy accumulator |
| JP7108645B2 (en) * | 2020-01-27 | 2022-07-28 | 株式会社鷺宮製作所 | Instrumentation and diagnostic systems |
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| CN102664556A (en) * | 2012-06-01 | 2012-09-12 | 浙江师范大学 | Piezoelectric energy harvester for recovering pressure pulsation energy of liquid |
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| CN104485851A (en) * | 2015-01-07 | 2015-04-01 | 浙江师范大学 | Pulling and pressing type vibration energy harvester |
| CN104485844A (en) * | 2015-01-07 | 2015-04-01 | 浙江师范大学 | Miniature power generation device used for power supply of pipeline monitoring system |
| CN104500985A (en) * | 2015-01-07 | 2015-04-08 | 浙江师范大学 | Self-powered oil and gas pipeline monitoring device based on fluid power generation |
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2016
- 2016-06-15 CN CN201610459316.6A patent/CN106100444B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664556A (en) * | 2012-06-01 | 2012-09-12 | 浙江师范大学 | Piezoelectric energy harvester for recovering pressure pulsation energy of liquid |
| CN102790551A (en) * | 2012-09-01 | 2012-11-21 | 浙江师范大学 | Self-powered device for monitoring oil and gas transmission pipelines |
| CN102797517A (en) * | 2012-09-01 | 2012-11-28 | 浙江师范大学 | Electricity generation device for oil gas pipeline monitoring system |
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| CN106100444A (en) | 2016-11-09 |
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Granted publication date: 20171020 Termination date: 20180615 |