CN104868785A - Cylindrical vortex-induced vibration generation device with built-in piezoelectric beam - Google Patents
Cylindrical vortex-induced vibration generation device with built-in piezoelectric beam Download PDFInfo
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- CN104868785A CN104868785A CN201510213312.5A CN201510213312A CN104868785A CN 104868785 A CN104868785 A CN 104868785A CN 201510213312 A CN201510213312 A CN 201510213312A CN 104868785 A CN104868785 A CN 104868785A
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Abstract
The invention discloses a cylindrical vortex-induced vibration generation device with a built-in piezoelectric beam, and relates to a generation device which is an electromechanical conversion device used for converting flow-induced vibration generated by fluid flowing around a bluff body into electric energy. The generation device comprises a cylinder, piezoelectric wafers, a metal sheet and a support structure, wherein the piezoelectric wafers are pasted on the two surfaces of the metal sheet to form a double-wafer piezoelectric beam arranged inside the cylinder, the plane piezoelectric beam is parallel to the axial direction of the cylinder and the direction of incoming flow, the piezoelectric cantilever beam is driven to vibrate by the periodic vibration of the cylinder due to vortex shedding formed by the fluid flowing around the cylinder, the base can be fixed at the bottom of sea and river or on the pipe wall of water flow pipeline and air flow pipeline, so that the kinetic energy of the fluid can be converted into the electric energy. The device is simple in structure and can start at a low flow rate.
Description
Technical field
The present invention relates to a kind of Blast Furnace Top Gas Recovery Turbine Unit (TRT), particularly relate to a kind of cylinder vortex Blast Furnace Top Gas Recovery Turbine Unit (TRT) of built-in piezoelectric beam.
Background technology
Underwater wireless sensor network is as the extension under water of terrestrial radio sensor network, can be used for data acquisition, pollution monitoring, disaster preparedness, marine resources exploration, underwater aided navigation location, long-range underwater control, Zhan Deng aspect, antisubmarine center, to national economy and national defence, there is important function.Because underwater sensor network is arranged in seabed more, it is safeguarded and changes cost comparatively greatly, and therefore underwater wireless sensor network needs a kind of stable, reliable, light and long-acting energy resource supply.And utilize the ocean power generation technology of wave and tidal power generation at present or cannot to realize in seabed or equipment is huge is not suitable for underwater wireless sensor network, therefore powerup issue becomes one of underwater wireless sensor network technical bottleneck.
Vortex is the most general a kind of physical phenomenon of occurring in nature, extensively be present in fluid motion, especially also can occur in the environments such as subsea that flow velocity is relatively little, and this vibration exists lastingly without the need to artificially increasing excitation, is that fluid can collect one of energy.Piezoelectric type vibration energy collection technology utilizes the technology that ambient vibration power conversion is electric energy by piezoelectric or device, because its structure is simple, energy density and electromechanical conversion efficiency high, without electromagnetic interference, be easy to making shaping, pollution-free, be easy to realize microminiaturization, the features such as the life-span is long, are widely studied and applied.If utilize piezoelectric to be electric energy by vortex power conversion, then can provide a solution for the powerup issue of underwater wireless sensor network.
Summary of the invention
The object of the present invention is to provide a kind of cylinder vortex Blast Furnace Top Gas Recovery Turbine Unit (TRT) of built-in piezoelectric beam, piezoelectric cantilever is placed in vertically the collection of energy structure of flexible thin-walled cylinder interior.Form the flexible cylinder Cyclic flexion vibration that vortex shedding causes when this structure utilizes fluid winding flow cylinder, thus drive vibration in piezoelectric cantilever beam to produce electric energy.
The object of the invention is to be achieved through the following technical solutions:
A cylinder vortex Blast Furnace Top Gas Recovery Turbine Unit (TRT) for built-in piezoelectric beam, this device utilizes the vortex shedding produced during fluid winding flow cylinder to drive cylinder vibrating perpendicular to carrying out flow path direction, drives piezoelectric patches to produce curved Zhang Zhen and moves, thus kinetic energy is converted to electric energy; Described device comprises thin cylinder, rectangular metal sheet, piezoelectric chip, contact conductor groove, support bar and base; Two panels piezoelectric chip is bonded in metal substrate both sides respectively, piezoelectric patches electrode is connected, form bi-morph piezo-electric beam, piezoelectric beam and support bar are attached across thin cylinder bottom surface and are placed in cylinder interior, piezoelectric beam plane and Cylindorical rod are to carry out flow path direction parallel with fluid, contact conductor is drawn from base by support bar groove, thus access energy collection circuit; Base is fixed on bottom ocean, rivers or current, airflow line tube wall on.
The cylinder vortex Blast Furnace Top Gas Recovery Turbine Unit (TRT) of described a kind of built-in piezoelectric beam, described cylinder is thin cylinder, and drum length is more than three times of its diameter, and metal substrate length equals drum length, metal substrate width and cylinder interior diameter approximately equal.
The cylinder vortex Blast Furnace Top Gas Recovery Turbine Unit (TRT) of described a kind of built-in piezoelectric beam, described drum diameter and length regulate according to speed of incoming flow.
Advantage of the present invention and effect are:
Built-in piezoelectric beam cylinder vortex energy conversion device, comprises lightweight cylinder, piezoelectric ceramic piece, metal substrate, support bar and base.Wherein piezoelectric ceramic piece utilizes conducting resinl to be pasted onto metal substrate both sides, be positioned over lightweight cylinder interior, cylinder upper end cover is fixed on metal substrate top, metal substrate bottom is connected with support bar and fixes with lightweight cylinder bottom end cover position, support bar lower end is fixed on base, and piezoelectric patches contact conductor is led to the signal processing circuit in base by support bar inner groovy.This device is positioned over bottom seabed or rivers, and Cylindorical rod is to vertical with fluid flow direction, and piezoelectric patches is parallel with fluid flow direction with metal substrate plane.When in rate of flow of fluid and device, cylindrical structure parameter meets certain condition, cylinder cylinder both sides can produce vortex shedding alternately, thus make cylinder produce vortex perpendicular to carrying out flow path direction, and then drive piezoelectric patches vibration to produce electric energy.In this energy conversion device, piezoelectric beam is packaged into cylinder interior, not direct and external fluid contact.This project organization adds cylinder downbeam bending resistance, its horizontal vortex energy is strengthened, not only solve the problems such as other structure fabrication difficulty, sealing corrosions, the resonance coupling of piezoelectric beam and pipe can also be strengthened, thus improve energy conversion efficiency.
Accompanying drawing explanation
Fig. 1 is built-in piezoelectric beam cylinder vortex energy conversion device structural representation;
Fig. 2 is built-in piezoelectric beam cylinder vortex energy conversion device front view;
Fig. 3 is built-in piezoelectric beam cylinder vortex energy conversion device vertical view;
Fig. 4 is built-in piezoelectric beam cylinder vortex energy conversion device general assembly drawing;
Fig. 5 is built-in piezoelectric beam cylinder vortex energy conversion device profile;
Fig. 6 is cylinder vortex schematic diagram.
In accompanying drawing: 1. cylinder 2. metal substrate 3. piezoelectric chip 4. wire lead slot 5. support bar 6. base.
Embodiment
Below in conjunction with accompanying drawing illustrated embodiment, the present invention is described in detail.
Built-in piezoelectric beam cylinder vortex energy conversion device comprises thin cylinder 1, rectangular metal sheet 2, piezoelectric chip 3, contact conductor groove 4, support bar 5 and base 6; Utilize conducting resinl that two panels piezoelectric chip 3 is bonded in metal substrate 2 both sides respectively, source of welding current lead-in wire makes piezoelectric patches electrode bi-morph piezo-electric beam in series, vertically piezoelectric beam is positioned in cylinder, be adhesively fixed with cylinder two ends, extraction electrode line from the wire lead slot of the support of support cylinder sealed cylindrical two ends, piezoelectric beam plane and Cylindorical rod are to carry out flow path direction parallel with fluid, contact conductor is drawn from base 6 by support bar groove 4, thus access energy collection circuit, base can be fixed on bottom ocean, rivers or current, airflow line tube wall on.
When current or air-flow stream cylinder, when cylinder both sides form regular vortex shedding, cylinder is producing vortex by whirlpool pressure perpendicular to carrying out flow path direction, thus drives vibration of piezoelectric beam, and then utilizes piezoelectric chip that kinetic energy is converted to electric energy.When de-whirlpool frequency and cylinder natural frequency close to time can reach higher energy conversion efficiency.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (3)
1. the cylinder vortex Blast Furnace Top Gas Recovery Turbine Unit (TRT) of a built-in piezoelectric beam, it is characterized in that, this device utilizes the vortex shedding produced during fluid winding flow cylinder to drive cylinder vibrating perpendicular to carrying out flow path direction, drives piezoelectric patches to produce curved Zhang Zhen and moves, thus kinetic energy is converted to electric energy; Described device comprises thin cylinder (1), rectangular metal sheet (2), piezoelectric chip (3), contact conductor groove (4), support bar (5) and base (6); Two panels piezoelectric chip (3) is bonded in metal substrate (2) both sides respectively, piezoelectric patches electrode is connected, form bi-morph piezo-electric beam, piezoelectric beam and support bar are attached across thin cylinder (1) bottom surface and are placed in cylinder interior, piezoelectric beam plane and Cylindorical rod are to carry out flow path direction parallel with fluid, contact conductor is drawn from base (6) by support bar groove (4), thus access energy collection circuit; Base is fixed on bottom ocean, rivers or current, airflow line tube wall on.
2. the cylinder vortex Blast Furnace Top Gas Recovery Turbine Unit (TRT) of a kind of built-in piezoelectric beam according to claim 1, it is characterized in that, described cylinder (1) is thin cylinder, drum length is more than three times of its diameter, metal substrate (2) length equals drum length, metal substrate width and cylinder interior diameter approximately equal.
3. the cylinder vortex Blast Furnace Top Gas Recovery Turbine Unit (TRT) of a kind of built-in piezoelectric beam according to claim 2, it is characterized in that, described drum diameter and length regulate according to speed of incoming flow.
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| CN201510213312.5A CN104868785B (en) | 2015-04-30 | 2015-04-30 | A kind of cylinder vortex TRT of built-in piezoelectric beam |
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| CN201510213312.5A CN104868785B (en) | 2015-04-30 | 2015-04-30 | A kind of cylinder vortex TRT of built-in piezoelectric beam |
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| CN104868785A true CN104868785A (en) | 2015-08-26 |
| CN104868785B CN104868785B (en) | 2017-09-05 |
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Cited By (17)
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| CN105932905A (en) * | 2016-06-02 | 2016-09-07 | 北京航空航天大学 | Energy acquisition device based on dual sinking-floating freedom degree flow-induced vibration |
| CN105953082A (en) * | 2016-06-15 | 2016-09-21 | 浙江师范大学 | Self-powered oil and gas pipeline monitoring device |
| CN105974153A (en) * | 2016-06-15 | 2016-09-28 | 浙江师范大学 | Intelligent channel flow monitor based on piezoelectric beam |
| CN106018870A (en) * | 2016-06-15 | 2016-10-12 | 浙江师范大学 | Intelligent pipeline flow velocity monitor |
| CN106026771A (en) * | 2016-06-15 | 2016-10-12 | 浙江师范大学 | Self-frequency modulating piezoelectric flow energy capture device |
| CN106018724A (en) * | 2016-06-15 | 2016-10-12 | 浙江师范大学 | River monitoring device based on piezoelectric stacks |
| CN106160573A (en) * | 2016-06-15 | 2016-11-23 | 浙江师范大学 | A kind of self-excitation piezoelectric harvester for river monitoring |
| CN106439500A (en) * | 2016-06-15 | 2017-02-22 | 浙江师范大学 | Monitoring device for pipeline flow state |
| CN106884618A (en) * | 2017-03-09 | 2017-06-23 | 西南石油大学 | A kind of rotary propeller type synchronous generator for installing piezoelectric patches and vibration-repressing device and method |
| CN108566117A (en) * | 2018-02-08 | 2018-09-21 | 中山大学 | A kind of differential piezoelectric generating device |
| CN108696183A (en) * | 2017-04-12 | 2018-10-23 | 北京工业大学 | A kind of broadband vortex-induced vibration piezoelectric energy collector being installed on high-speed railway |
| CN108919113A (en) * | 2018-04-03 | 2018-11-30 | 哈尔滨工业大学 | A kind of piezoelectric energy harvesters test device and test method |
| CN109826743A (en) * | 2019-02-28 | 2019-05-31 | 东南大学 | Tide energy is without leaf vibration generating device |
| CN110389014A (en) * | 2019-07-16 | 2019-10-29 | 沈阳化工大学 | A kind of piezoelectric energy collects array Flow vibration experimental provision and its operating method |
| CN110710097A (en) * | 2017-05-30 | 2020-01-17 | 沙特阿拉伯石油公司 | Harvesting energy from a fluid flow |
| CN111697876A (en) * | 2020-06-23 | 2020-09-22 | 南京航空航天大学 | Vortex excitation electric device and method for liquid pipeline transportation |
| CN112290830A (en) * | 2020-09-10 | 2021-01-29 | 沈阳化工大学 | Double-sleeve sandwiched shear type piezoelectric beam vortex-induced vibration energy conversion device |
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Cited By (27)
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| CN105932905A (en) * | 2016-06-02 | 2016-09-07 | 北京航空航天大学 | Energy acquisition device based on dual sinking-floating freedom degree flow-induced vibration |
| CN105932905B (en) * | 2016-06-02 | 2018-05-01 | 北京航空航天大学 | A kind of electricity energy harvester based on double sink-float free degree Flow vibrations |
| CN106439500B (en) * | 2016-06-15 | 2018-05-01 | 浙江师范大学 | A kind of pipeline stream mode monitoring device |
| CN106160573A (en) * | 2016-06-15 | 2016-11-23 | 浙江师范大学 | A kind of self-excitation piezoelectric harvester for river monitoring |
| CN106018870B (en) * | 2016-06-15 | 2018-07-17 | 浙江师范大学 | A kind of intelligent pipeline flow monitoring instrument |
| CN106018724A (en) * | 2016-06-15 | 2016-10-12 | 浙江师范大学 | River monitoring device based on piezoelectric stacks |
| CN105974153B (en) * | 2016-06-15 | 2018-07-17 | 浙江师范大学 | A kind of intelligent pipeline stream monitor based on piezoelectric beam |
| CN106439500A (en) * | 2016-06-15 | 2017-02-22 | 浙江师范大学 | Monitoring device for pipeline flow state |
| CN106160573B (en) * | 2016-06-15 | 2017-11-21 | 浙江师范大学 | A kind of self-excitation piezoelectric harvester for river monitoring |
| CN106018870A (en) * | 2016-06-15 | 2016-10-12 | 浙江师范大学 | Intelligent pipeline flow velocity monitor |
| CN106026771B (en) * | 2016-06-15 | 2017-11-24 | 浙江师范大学 | It is a kind of from frequency modulation piezoelectricity current energy accumulator |
| CN106018724B (en) * | 2016-06-15 | 2018-03-09 | 浙江师范大学 | A kind of river monitoring device based on piezoelectric stack |
| CN105974153A (en) * | 2016-06-15 | 2016-09-28 | 浙江师范大学 | Intelligent channel flow monitor based on piezoelectric beam |
| CN105953082A (en) * | 2016-06-15 | 2016-09-21 | 浙江师范大学 | Self-powered oil and gas pipeline monitoring device |
| CN106026771A (en) * | 2016-06-15 | 2016-10-12 | 浙江师范大学 | Self-frequency modulating piezoelectric flow energy capture device |
| CN106884618B (en) * | 2017-03-09 | 2018-09-14 | 西南石油大学 | A kind of rotary propeller type synchronous generator that installing piezoelectric patches and vibration-repressing device and method |
| CN106884618A (en) * | 2017-03-09 | 2017-06-23 | 西南石油大学 | A kind of rotary propeller type synchronous generator for installing piezoelectric patches and vibration-repressing device and method |
| CN108696183A (en) * | 2017-04-12 | 2018-10-23 | 北京工业大学 | A kind of broadband vortex-induced vibration piezoelectric energy collector being installed on high-speed railway |
| CN110710097A (en) * | 2017-05-30 | 2020-01-17 | 沙特阿拉伯石油公司 | Harvesting energy from a fluid flow |
| CN108566117A (en) * | 2018-02-08 | 2018-09-21 | 中山大学 | A kind of differential piezoelectric generating device |
| CN108919113A (en) * | 2018-04-03 | 2018-11-30 | 哈尔滨工业大学 | A kind of piezoelectric energy harvesters test device and test method |
| CN108919113B (en) * | 2018-04-03 | 2020-08-11 | 哈尔滨工业大学 | Testing device and testing method for piezoelectric energy collector |
| CN109826743A (en) * | 2019-02-28 | 2019-05-31 | 东南大学 | Tide energy is without leaf vibration generating device |
| CN110389014A (en) * | 2019-07-16 | 2019-10-29 | 沈阳化工大学 | A kind of piezoelectric energy collects array Flow vibration experimental provision and its operating method |
| CN111697876A (en) * | 2020-06-23 | 2020-09-22 | 南京航空航天大学 | Vortex excitation electric device and method for liquid pipeline transportation |
| CN112290830A (en) * | 2020-09-10 | 2021-01-29 | 沈阳化工大学 | Double-sleeve sandwiched shear type piezoelectric beam vortex-induced vibration energy conversion device |
| CN112290830B (en) * | 2020-09-10 | 2023-10-20 | 沈阳化工大学 | Double-sleeve clamping shear type piezoelectric beam vortex induced vibration energy conversion device |
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