CN106026769A - Self-limiting stretching vibration type pipeline power generator - Google Patents
Self-limiting stretching vibration type pipeline power generator Download PDFInfo
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- CN106026769A CN106026769A CN201610458886.3A CN201610458886A CN106026769A CN 106026769 A CN106026769 A CN 106026769A CN 201610458886 A CN201610458886 A CN 201610458886A CN 106026769 A CN106026769 A CN 106026769A
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- piezoelectric vibrator
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- 239000002184 metal Substances 0.000 claims abstract description 7
- 239000012530 fluid Substances 0.000 claims description 14
- 238000010276 construction Methods 0.000 claims description 4
- 230000002596 correlated effect Effects 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 9
- 238000012544 monitoring process Methods 0.000 abstract description 9
- 239000000758 substrate Substances 0.000 abstract description 6
- 238000005452 bending Methods 0.000 abstract description 2
- 239000013078 crystal Substances 0.000 abstract 3
- 238000010248 power generation Methods 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process 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
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
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
- H02N2/186—Vibration harvesters
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- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The invention relates to a self-limiting stretching vibration type pipeline power generator, and belongs to the monitoring field of an oil and gas pipeline. A shell is mounted in the pipeline; an end cover is mounted at the end part of the shell; a force-applying rod is divided into a left end rod and a right end rod by a flange; the right end rod is sleeved with a disc spring; the disc spring is pressed at the bottom of the shell by the flange; the left end rod is sleeved with a sliding sleeve, and a clamping spring and a polar plate are mounted on the left end rod; a piezoelectric vibrator comprises a metal substrate and piezoelectric crystal plates which are arranged in a sticking manner; the right end of the substrate is fixed on the flange of the force-applying rod; the left end of the substrate is fixed on an end cover lug boss, and the middle part of the substrate is fixed on the sliding sleeve; each piezoelectric vibrator adopts a flat and straight structure before the piezoelectric vibrator is assembled; the length of the piezoelectric vibrator is equal to the distance between the end cover and the bottom of the shell; the assembled piezoelectric vibrator is changed into a bending structure; and the piezoelectric crystal plates bear the pressure stress. The self-limiting stretching vibration type pipeline power generator has the characteristics and advantages as follows: the flat and straight piezoelectric vibrators are changed into the bending-structured piezoelectric vibrators through the mounting method to form the power generation apparatus which can be in stretching vibration in the length direction of the pipeline; the pipeline power generator is simple in structure and process, and low in cost; the piezoelectric crystal plates only bear the pressure stress within a controllable range, so that high reliability is achieved; and in addition, the electric energy production can be increased by increasing the number or prolonging the length of the piezoelectric vibrators.
Description
Technical field
The invention belongs to oil and gas pipes monitoring system and field of piezoelectric generation, be specifically related to a kind of from limit telescopic vibration type pipe generator.
Background technology
The gas oil pipe leakage event caused because of spontaneous corrosion, nature act of god, especially artificial pilferage etc. happens occasionally, and not only causes huge economic loss, the most also causes serious pollution to its periphery natural environment.In the past, oil-gas pipeline is safeguarded by the method frequently with regular manual inspection, but because it lays distance and is often in uninhabited or part of having inconvenient traffic, regular visit is difficult to find leakage on-call maintenance in time, therefore there has been proposed polytype line leakage or burglary-resisting system.Though some pipe leakage proposed or anti-theft monitoring alarm method are the most ripe at technological layer, but the at present application of China's long distance pipeline anti-theft monitoring system is also in the starting stage, be not yet used widely, one of its reason is that its powerup issue is not well solved: uses the method cost laying cable high and is easily cut off by lawless person and affect the properly functioning of monitoring system；And use limited time when using battery to power, need to often change, and the most in time replacing not enough once battery electric quantity also cannot complete the remote transmission of monitoring information.Therefore, for making gas oil pipe leakage and burglary-resisting system be used practically, it is necessary to first solve its powerup issue.In recent years, for meeting the self-powered demand of all kinds of wireless sensing monitoring system, there has been proposed a kind of novel miniature piezoelectric TRT, it have simple in construction, do not generate heat, without electromagnetic interference, integrated high, be particularly suited for wireless sensing monitoring system power supply.But, existing oil and gas pipes piezoelectric generating device mostly rotates the generating of driving pressure electric tachometer indicator by fluid turbine, and structure is complicated, volume is big, is unsuitable for the pipeline that diameter is relatively small；Meanwhile, in work, piezoelectric vibrator compound bending deforms, bears and alternately draw-compressive stress, and when tension is excessive, piezoelectric chip is broken, reliability is low.
Summary of the invention
The limitation applied for a power supply difficult problem and the existing piezoelectric generating device of oil/gas pipe line monitoring, the present invention proposes a kind of from limit telescopic vibration type pipe generator.The present invention adopted implementation scheme is that inner-walls of duct is provided with housing through left and right disc, is provided with counterbore at the bottom of shell；Shell end is provided with boss through screw equipped with end cap, end cap；Force application rod is divided into left end bar and right-hand member bar by flange, and right-hand member bar is cased with disk spring, and disk spring is pressed at the bottom of shell by flange, and right-hand member boom end is placed in the counterbore at the bottom of shell；Being cased with sliding sleeve on left end bar, be provided with spacing jump ring, left end bar pilot hole on end cap stretches out, and left end boom end is provided with sharp plate through nut；Piezoelectric vibrator is by metal basal board and uniform piezoelectric chip is bonding forms, and the right-hand member of metal basal board is fixed on the flange of force application rod through screw and briquetting, left end is fixed on end cap boss through screw and briquetting, and middle part is fixed on sliding sleeve through screw and briquetting；It is the distance between flat construction and its length are equal at the bottom of end cap and shell under naturalness before piezoelectric vibrator assembling；Piezoelectric vibrator becomes the radius of curvature radius of curvature less than substrate of warp architecture and piezoelectric chip after installing, piezoelectric chip bears compressive stress；Be placed between end cap and sliding sleeve adjacent thereto, each piezoelectric vibrator between two adjacent sliding sleeves and at the bottom of shell and between sliding sleeve adjacent thereto respectively constitutes generator unit.
When after electromotor is installed and flowing through sharp plate without fluid, spacing jump ring acts against on end cap, and the decrement of generator unit is maximum, piezoelectric chip institute compression chord is maximum；After having fluid to flow through sharp plate, hydrodynamic pressure makes to swash plate and force application rod moves to right, and forces the elongation of each generator unit, disk spring to shorten, and it is half during its inoperative that spacing jump ring departs from the decrement of end cap and generator unit；For meeting this condition, the stiffness K of disk springsWith natural length LsIt is respectively Ks=(S ρ v2μl-NrKpδ)/(δNz) and Ls=Δ LNz(NzKs+NrKp)/(NzKs), in formula: NzAnd NrPiezoelectric vibrator number in parallel in being respectively the quantity of generator unit and single generator unit, the decrement of generator unit, K when δ is inoperativepFor the flexible rigidity of piezoelectric vibrator single in generator unit, S is the surface area swashing plate, v and ρ is respectively rate of flow of fluid and density, μlFor the coefficient relevant to Reynolds number and structure dimension.
In work process, when i.e. having fluid to flow through sharp plate, sharp plate will produce vortex-induced vibration under action of a fluid, and force each generator unit to produce stretching vibration by force application rod: when force application rod moves right, the elongation of each generator unit, disk spring shorten, and piezoelectric chip institute compression chord reduces；Otherwise, force application rod is when left movement, and each generator unit shortens, disk spring elongation, and piezoelectric chip institute compression chord increases, and maximum crushing stress is determined by the position of spacing jump ring；During the elongation-shortening alternately of above-mentioned each generator unit, piezoelectric chip bears rational compressive stress all the time, and reliability is high；Accidental flow velocity increases severely makes piezoelectric vibrator elongation reach maximum, when i.e. reaching straightened condition, disk spring will be crushed to death, fluid force is applied directly at the bottom of shell.
Advantage and characteristic: 1. straight piezoelectric vibrator is become warp architecture by the method by installing, and formation is simple along the TRT of pipe lengths stretching vibration, structure and processing technology, low cost；2. piezoelectric chip is only operated under compressive stress state and compressive stress range-controllable, and reliability is high；3. it is easy to the method by increasing piezoelectric vibrator quantity and length and improves generated energy.
Accompanying drawing explanation
Fig. 1 is the section of structure of electromotor in a preferred embodiment of the present invention；
Fig. 2 is the A-A view of Fig. 1；
Fig. 3 is the structural representation installing front piezoelectric vibrator in a preferred embodiment of the present invention；
Fig. 4 is the structural representation of main body in a preferred embodiment of the present invention.
Detailed description of the invention
Pipeline a inwall is provided with housing c through left disc b and right disc b ', and d at the bottom of shell is provided with counterbore e；Housing c end is provided with boss j1 through screw equipped with end cap j, end cap j；Force application rod f is divided into left end bar f2 and right-hand member bar f3 by flange f1, right-hand member bar f3 is cased with disk spring h, disk spring h and is pressed on d at the bottom of shell by flange f1, in the counterbore e that right-hand member bar f3 portion is placed on d at the bottom of shell；Being cased with sliding sleeve n on left end bar f2, be provided with spacing jump ring p, left end bar f2 pilot hole on end cap j stretches out, and left end bar f2 end is provided with sharp plate k through nut m；Piezoelectric vibrator i is by metal basal board i1 and uniform piezoelectric chip i2 is bonding forms, the right-hand member of metal basal board i1 is fixed on the flange f1 of force application rod f through screw and briquetting g, left end is fixed on the boss j1 of end cap j through screw and briquetting g, and middle part is fixed on sliding sleeve n through screw and briquetting g；It is flat construction and its length L1 distance L2 that is equal at the bottom of end cap j and shell between d under naturalness before piezoelectric vibrator i assembling；Piezoelectric vibrator i becomes the radius of curvature radius of curvature less than substrate i1 of warp architecture and piezoelectric chip i2 after installing, piezoelectric chip i2 bears compressive stress；Be placed between end cap j and sliding sleeve n adjacent thereto, each piezoelectric vibrator i between d and sliding sleeve n adjacent thereto respectively constitutes generator unit Q between two adjacent sliding sleeve n and at the bottom of shell.
When after electromotor is installed and flowing through sharp plate k without fluid, spacing jump ring p acts against on end cap j, and the decrement of generator unit Q is maximum, piezoelectric chip i2 institute compression chord is maximum；After having fluid to flow through sharp plate k, hydrodynamic pressure makes to swash plate k and force application rod f and moves to right, and forces each generator unit Q elongation, disk spring h to shorten, and it is half during its inoperative that spacing jump ring p departs from the decrement of end cap j and generator unit Q；For meeting this condition, the stiffness K of disk springsWith natural length LsIt is respectively Ks=(S ρ v2μl-NrKpδ)/(δNz) and Ls=Δ LNz(NzKs+NrKp)/(NzKs), in formula: NzAnd NrThe quantity of piezoelectric vibrator i in parallel in the quantity of respectively generator unit Q and single generator unit, the decrement of generator unit Q, K when δ is inoperativepFor the flexible rigidity of piezoelectric vibrator i single in generator unit Q, S is the surface area swashing plate k, v and ρ is respectively rate of flow of fluid and density, μlFor the coefficient relevant to Reynolds number and structure dimension.
In work process, when i.e. having fluid to flow through sharp plate k, swash plate k and will produce vortex-induced vibration under action of a fluid, and force each generator unit Q to produce stretching vibration by force application rod f: when force application rod f moves right, each generator unit Q elongation, disk spring h shorten, and piezoelectric chip i2 institute compression chord reduces；Otherwise, force application rod f is when left movement, and each generator unit Q shortens, disk spring h elongation, and piezoelectric chip i2 institute compression chord increases, and maximum crushing stress is determined by the position of spacing jump ring p；During above-mentioned each generator unit Q elongation-shortening alternately, piezoelectric chip i2 bears rational compressive stress all the time, and reliability is high；Accidental flow velocity increases severely makes piezoelectric vibrator i elongation reach maximum, when i.e. reaching straightened condition, disk spring h will be crushed to death, fluid force is applied directly on d at the bottom of shell.
Claims (1)
1. one kind from limit telescopic vibration type pipe generator, it is characterised in that: inner-walls of duct is provided with housing through left and right disc,
Counterbore it is provided with at the bottom of shell；Shell end is provided with boss equipped with end cap, end cap；Force application rod is divided into left end bar and right-hand member bar by flange,
Being cased with disk spring on right-hand member bar, disk spring is pressed at the bottom of shell by flange, and right-hand member boom end is placed in the counterbore at the bottom of shell；Left
Being cased with sliding sleeve on end bar, be provided with spacing jump ring, left end bar pilot hole on end cap stretches out, and left end boom end is provided with sharp plate；
Piezoelectric vibrator is by metal basal board and uniform piezoelectric chip is bonding forms, and metal basal board right-hand member is fixed on the flange of force application rod, left
End is fixed on end cap boss, and middle part is fixed on sliding sleeve；It is that flat construction and its length are equal to end cap before piezoelectric vibrator assembling
And the distance between at the bottom of shell, becomes warp architecture after installation and piezoelectric chip bears compressive stress；It is placed in end cap and sliding sleeve adjacent thereto
Between, each piezoelectric vibrator between two adjacent sliding sleeves and at the bottom of shell and between sliding sleeve adjacent thereto respectively constitute generator unit；Work
When making, the decrement of generator unit is half during inoperative, and the rigidity of disk spring and natural length are respectively
Ks=(S ρ v2μl-NrKpδ)/(δNz) and Ls=Δ LNz(NzKs+NrKp)/(NzKs), in formula: NzAnd NrRespectively generate electricity list
The quantity of piezoelectric vibrator, the decrement of generator unit, K when δ is inoperative in unit's quantity and single generator unitpFor generator unit
The flexible rigidity of interior single piezoelectric vibrator, S is the surface area swashing plate, v and ρ is respectively rate of flow of fluid and density, μlFor with thunder
The coefficient that promise number and structure dimension are correlated with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610458886.3A CN106026769B (en) | 2016-06-15 | 2016-06-15 | One kind is from limit telescopic oscillatory type pipe generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610458886.3A CN106026769B (en) | 2016-06-15 | 2016-06-15 | One kind is from limit telescopic oscillatory type pipe generator |
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| CN106026769A true CN106026769A (en) | 2016-10-12 |
| CN106026769B CN106026769B (en) | 2018-09-21 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110002484A1 (en) * | 2009-07-03 | 2011-01-06 | Yoshinori Hama | Acoustic transducer |
| CN102820807A (en) * | 2012-09-01 | 2012-12-12 | 浙江师范大学 | High-power rotary type piezoelectric wind driven generator excited and limited by end cam |
| CN202718711U (en) * | 2012-09-01 | 2013-02-06 | 浙江师范大学 | Generating set for oil and gas pipeline monitoring system |
| CN104485851A (en) * | 2015-01-07 | 2015-04-01 | 浙江师范大学 | Pulling and pressing type vibration energy harvester |
-
2016
- 2016-06-15 CN CN201610458886.3A patent/CN106026769B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110002484A1 (en) * | 2009-07-03 | 2011-01-06 | Yoshinori Hama | Acoustic transducer |
| CN102820807A (en) * | 2012-09-01 | 2012-12-12 | 浙江师范大学 | High-power rotary type piezoelectric wind driven generator excited and limited by end cam |
| CN202718711U (en) * | 2012-09-01 | 2013-02-06 | 浙江师范大学 | Generating set for oil and gas pipeline monitoring system |
| CN104485851A (en) * | 2015-01-07 | 2015-04-01 | 浙江师范大学 | Pulling and pressing type vibration energy harvester |
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| CN106026769B (en) | 2018-09-21 |
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Inventor after: Wu Ming Inventor after: Han Junwu Inventor after: Wang Shuyun Inventor after: Shi Jizhong Inventor after: Zhang Ke Inventor before: Han Junwu Inventor before: Fu Jiawei Inventor before: Shi Jizhong Inventor before: Wang Shuyun Inventor before: Zhang Ke |
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Effective date of registration: 20210623 Address after: Room 406, no.3020 Huling Road, Linghu Town, Nanxun District, Huzhou City, Zhejiang Province Patentee after: Huzhou lingchuang Technology Co., Ltd Address before: 321004 688 Yingbin Road, Zhejiang, Jinhua, Zhejiang Normal University Patentee before: ZHEJIANG NORMAL University |
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Effective date of registration: 20211215 Address after: 252000 No. 2, Huixin South Road, Gaotang Economic Development Zone, Liaocheng City, Shandong Province (Development Zone Management Committee) Patentee after: GAOTANG Rongzhi Rongzhi Technology Service Co.,Ltd. Address before: Room 406, no.3020 Huling Road, Linghu Town, Nanxun District, Huzhou City, Zhejiang Province Patentee before: Huzhou lingchuang Technology Co., Ltd |