CN107359819A - A kind of pipeline stream energy accumulator - Google Patents
A kind of pipeline stream energy accumulator Download PDFInfo
- Publication number
- CN107359819A CN107359819A CN201710728641.2A CN201710728641A CN107359819A CN 107359819 A CN107359819 A CN 107359819A CN 201710728641 A CN201710728641 A CN 201710728641A CN 107359819 A CN107359819 A CN 107359819A
- Authority
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- China
- Prior art keywords
- transducer
- cam
- rocking arm
- otic placode
- profile
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000758 substrate Substances 0.000 claims abstract description 11
- 238000010276 construction Methods 0.000 claims abstract description 5
- 238000009434 installation Methods 0.000 claims abstract description 5
- 238000005452 bending Methods 0.000 claims description 4
- 210000003027 ear inner Anatomy 0.000 claims 1
- 239000012530 fluid Substances 0.000 abstract description 14
- 238000010248 power generation Methods 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 12
- 238000007906 compression Methods 0.000 description 12
- 238000012544 monitoring process Methods 0.000 description 8
- 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
- 230000005484 gravity Effects 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
- 238000009165 androgen replacement therapy Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000009897 systematic 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 pipeline stream energy accumulator, category fluid power-generation field.The chassis base of otic placode is on the crossbeam of pipeline inside and outside band；The rocking arm left end of driver is provided with rocking arm otic placode, right-hand member is provided with bluff body, front and rear sides are provided with cam, and in rotating shaft, rotating shaft is fixed on outer otic placode the shaft hole sleeve of rocking arm；Bearing pin is equipped with interior otic placode and rocking arm otic placode, both ends of the spring is connected on bearing pin；Both sides are equipped with transducer to chassis base up and down, and the substrate of transducer is installed close to chassis base, and transducer free end is acted against on cam；The contour curve of cam includes the two section arc profiles concentric with axis hole, and arc profile is most short away from axis hole centre distance on the contour curve of cam；Be flat construction before transducer installation, install after be that the profile summit of warp architecture and transducer free end and cam contacts with each other；Profile summit is apart from the point that axis hole centre distance is most long on the contour curve of cam, and deflection when transducer is in contact with profile summit is maximum.
Description
Technical field
The invention belongs to pipeline fluid to generate electricity and Monitoring Pinpelines technical field, and in particular to a kind of pipeline stream energy accumulator.
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.In the past, safeguarded frequently with the method for regular manual inspection, but
Distance is laid because of oil-gas pipeline and often is difficult to find in time in uninhabited or part of having inconvenient traffic, artificial regular visit
Leak and safeguarded.Therefore, there has been proposed polytype line leakage and burglary-resisting system.Although certain proposed
A little pipeline fluid leakages and anti-theft monitoring alarm method are more ripe in technological layer, but China's long distance pipeline anti-theft monitoring at present
Systematic difference obtains the popularization and application of large area also in the starting stage, not yet, and its one of the main reasons is monitoring system
Powerup issue fails to be well solved：1. laying cable cost is high and is easily cut off by criminal and influences monitoring system
Normal operation；2. battery powered usage time is limited, need to often change, it is insufficient once battery electric quantity and in time change when also without
Method completes the remote transmission of monitoring information.In recent years, to meet the self-powered demand of related wireless sensing monitoring system, Ren Menyi
Through proposing the turbine type microminiature flow generator of diversified forms, the problem of its is maximum be complicated, volume relatively
Greatly, be unsuitable for the less occasion of pipe diameter, phenomena such as electromagnetic interference also be present in the TRTs of some structures, popularization and application by
Certain restriction is arrived.Therefore, to be used practically petroleum and natural gas pipe leakage and anti-theft monitoring system, first still
Need to solve its powerup issue.
The content of the invention
The present invention proposes a kind of pipeline stream energy accumulator, and the embodiment that the present invention uses is：Crossbeam, framework are provided with pipeline
Chassis base, two interior otic placodes and two outer otic placodes are provided with, chassis base is arranged on crossbeam through screw；The rocking arm of driver
Left end is provided with two rocking arm otic placodes, right-hand member is provided with hollow bluff body, front and rear sides are provided with cam, and the shaft hole sleeve of rocking arm is in rotating shaft
On, rotating shaft both ends are separately fixed on two outer otic placodes；Bearing pin, the both ends point of spring are fitted with interior otic placode and rocking arm otic placode
It is not connected on two bearing pins；The both sides up and down of chassis base are all provided with transducer through screw and pressing plate, and transducer is by substrate
Formed with piezoelectric film bonding, substrate is installed close to chassis base, and transducer free end is acted against on cam；The contour curve of cam
Comprising the two section arc profiles concentric with axis hole, arc profile is most short away from axis hole centre distance on the contour curve of cam；
Transducer installation before be flat construction, install after be warp architecture and transducer free end and the profile summit phase mutual connection of cam
Touch；Profile summit is located at the left side of axis hole, profile summit be on the contour curve of cam apart from the point that axis hole centre distance is most long,
Deflection when transducer is in contact with profile summit is maximum, and transducer is free when cam rotates clockwise and anticlockwise around the shaft
The deformation at end all reduces；Transducer does not occur bending and deformation when transducer free end is in contact with arc profile, on piezoelectric film
Stress is equal and is zero.
When the profile summit of transducer end and cam contacts with each other, maximum crushing stress on piezoelectric film be less than its value permitted,
Transducer end deflection is less than its allowable value
Wherein：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 the thickness of substrate, H is the gross thickness of transducer, Em
And EpThe respectively Young's modulus of substrate and piezoelectricity membrane material, k31WithThe respectively electromechanical coupling factor of piezoelectric and allowable
Compression, L are the length of transducer.
Under off working state, i.e., when the fluid in pipeline does not flow, driver is in its own gravity, fluid buoyancy and spring
Be in poised state in the presence of elastic force, chassis base up and down both sides transducer all with cam apexes contact, two transducers
Deformation and stress distribution difference it is identical；During work, that is, when having the fluid to flow through turbulent, turbulent can be applied by fluid
Alternation up and down active force so that rocking arm and cam reciprocally swinging around the shaft, cam is around the shaft along clockwise and counterclockwise
During rotation, the compression on transducer end deflection and piezoelectric film is all gradually reduced, when transducer contacts with arc profile
The deflection of transducer is zero；On the contrary, during cam return, compression on transducer end deflection and piezoelectric film all by
It is cumulative plus, the compression when the profile summit of transducer free end and cam contacts with each other on transducer deflection and piezoelectric film
Reach maximum；The alternating increase of compression by mechanical energy during reducing with being converted to electric energy on above-mentioned piezoelectric film.
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. the middle piezoelectric film that works is subjected only to compression, reliability is high；3. change
The deflection of energy device is determined by the contour curve of driver cam, further increases reliability.
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 driver in a preferred embodiment of the present invention；
Fig. 4 is Fig. 3 top view；
Fig. 5 is the structural representation of framework.
Embodiment
Crossbeam a1 is provided with pipeline a, framework b is provided with chassis base b1, two interior otic placode b2 and two outer otic placode b3, frame
Frame bottom plate b1 is arranged on crossbeam a1 through screw；During driver c rocking arm c1 left ends are provided with provided with two rocking arm otic placode c2, right-hand members
The bluff body c3 of sky, front and rear sides are provided with cam c4, and rocking arm c1 axis hole c5 is enclosed on rotating shaft d, and rotating shaft d both ends are separately fixed at
On two outer otic placode b3；Bearing pin d ' is fitted with interior otic placode b2 and rocking arm otic placode c2, spring e both ends are connected to two
On bearing pin d '；Chassis base b1 both sides up and down are all provided with transducer h through screw and pressing plate f, and transducer h is by substrate h1 and pressure
Electrolemma h2 bondings are formed, and substrate h1 is installed close to chassis base b1, and transducer h free end is acted against on cam c4；Cam c4
Contour curve include two section the arc profile c6s and c7 concentric with axis hole c5, the profile that arc profile c6 and c7 are cam c4 is bent
It is most short away from axis hole c5 centre distances on line；Transducer h installation before be flat construction, install after be warp architecture and transducer h
Free end mutually contacts with cam c4 profile summit T-phase；Profile summit T is located at axis hole c5 left side, and profile summit T is cam c4
Contour curve on apart from the most long point of axis hole c5 centre distances, deflection when transducer h contacts with profile summit T-phase is most
Greatly, cam c4 when d is rotated clockwise and anticlockwise around the shaft the deformation of transducer h free ends all reduce；Transducer h free ends with
Transducer h does not occur bending and deformation when arc profile c6 and c7 are in contact (can interfere with driver and not reach circle in theory
Arc profile), the stress on piezoelectric film h2 is equal and is zero.
When transducer h free ends mutually contact with cam c4 profile summit T-phase, the maximum crushing stress on piezoelectric film h2 is less than
Its permissible compression stress, now the bending deformation quantity of transducer h ends be not more than allowable valueWherein：B=1- α+α β, A=α4(1-β)2-4
α3(1-β)+6α2(1- β) -4 α (1- β)+1,α=hm/ H, β=Em/Ep, hmFor substrate
H1 thickness, H be transducer h gross thickness, EmAnd EpRespectively substrate h1 and piezoelectric film h2 materials Young's modulus, k31With
The respectively electromechanical coupling factor and permissible compression stress of piezoelectric, L are transducer h length.
Under off working state, i.e., when the fluid in pipeline a does not flow, driver c is in its own gravity, fluid buoyancy and bullet
Poised state is in the presence of spring e elastic forces, both sides transducer h is contacted chassis base b1 with cam summit T up and down, two
Transducer h deformation and stress distribution difference are identical；During work, that is, when thering is the fluid to flow through turbulent c3, turbulent c3 meetings
The active force of the alternation up and down applied by fluid, so that d reciprocally swingings, cam c4 rotate around the shaft by rocking arm c1 and cam c4
Along clockwise and when rotating counterclockwise, the compression on transducer h Leading Edge Deformations amount and piezoelectric film h2 is all gradually reduced axle d, when
Transducer h deflection is zero when transducer h contacts with arc profile c6 or c7；On the contrary, in cam c4 reseting procedures, transducer
Compression on h Leading Edge Deformations amount and piezoelectric film h2 all gradually increases, when transducer h free ends and cam c4 profile summit T
Compression when contacting with each other on transducer h deflections and piezoelectric film h2 reaches maximum；The friendship of compression on above-mentioned piezoelectric film h2
For mechanical energy is converted into electric energy during increasing and reducing.
Claims (1)
- A kind of 1. pipeline stream energy accumulator, it is characterised in that：Crossbeam is provided with pipeline, framework is provided with chassis base, two inner ears Plate and two outer otic placodes, chassis base are arranged on crossbeam through screw；The rocking arm left end of driver is provided with two rocking arm otic placodes, the right sides End is provided with cam provided with hollow bluff body, front and rear sides, and for the shaft hole sleeve of rocking arm in rotating shaft, rotating shaft both ends are separately fixed at two On outer otic placode；Bearing pin is fitted with interior otic placode and rocking arm otic placode, the both ends of spring are connected on two bearing pins；Framework bottom Both sides are all provided with transducer to plate through screw and pressing plate up and down, and transducer is formed by substrate and piezoelectric film bonding, and substrate is close to frame Frame bottom plate is installed, and transducer free end is acted against on cam；The contour curve of cam includes the two section circular arc wheels concentric with axis hole Exterior feature, arc profile are most short away from axis hole centre distance on the contour curve of cam；It is flat construction before transducer installation, installation Contacted with each other afterwards for warp architecture and transducer free end and the profile summit of cam；Profile summit is located at the left side of axis hole, wheel Wide summit is change when transducer is in contact with profile summit apart from the point that axis hole centre distance is most long on the contour curve of cam Shape amount is maximum, when cam rotates clockwise and anticlockwise around the shaft the deformation of transducer free end all reduce；Transducer free end Transducer does not occur bending and deformation when being in contact with arc profile, and the stress on piezoelectric film is equal and is zero.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710728641.2A CN107359819B (en) | 2017-08-17 | 2017-08-17 | Pipeline flows energy harvester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710728641.2A CN107359819B (en) | 2017-08-17 | 2017-08-17 | Pipeline flows energy harvester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107359819A true CN107359819A (en) | 2017-11-17 |
| CN107359819B CN107359819B (en) | 2023-06-16 |
Family
ID=60288957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710728641.2A Active CN107359819B (en) | 2017-08-17 | 2017-08-17 | Pipeline flows energy harvester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107359819B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110808692A (en) * | 2019-05-18 | 2020-02-18 | 浙江师范大学 | Vortex-induced vibration type piezoelectric generator |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102801360A (en) * | 2012-09-01 | 2012-11-28 | 浙江师范大学 | Disk cam excited and limited high-power rotary piezoelectric wind generator |
| US20170328339A1 (en) * | 2014-12-01 | 2017-11-16 | Gilles Grosso | Apparatus for converting wave energy into electrical energy |
-
2017
- 2017-08-17 CN CN201710728641.2A patent/CN107359819B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102801360A (en) * | 2012-09-01 | 2012-11-28 | 浙江师范大学 | Disk cam excited and limited high-power rotary piezoelectric wind generator |
| US20170328339A1 (en) * | 2014-12-01 | 2017-11-16 | Gilles Grosso | Apparatus for converting wave energy into electrical energy |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110808692A (en) * | 2019-05-18 | 2020-02-18 | 浙江师范大学 | Vortex-induced vibration type piezoelectric generator |
| CN110808692B (en) * | 2019-05-18 | 2021-10-08 | 浙江师范大学 | Vortex-induced vibration type piezoelectric generator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107359819B (en) | 2023-06-16 |
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