CN102377315B - Power generation device and method based on coupling effect of time-meflow and alternating flow - Google Patents
Power generation device and method based on coupling effect of time-meflow and alternating flow Download PDFInfo
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- CN102377315B CN102377315B CN2011102828802A CN201110282880A CN102377315B CN 102377315 B CN102377315 B CN 102377315B CN 2011102828802 A CN2011102828802 A CN 2011102828802A CN 201110282880 A CN201110282880 A CN 201110282880A CN 102377315 B CN102377315 B CN 102377315B
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Abstract
The invention discloses a power generation device and a method based on the coupling effect of time-mean flow and alternating flow. The device comprises an upstream section of a driving pipe, a downstream section of the driving pipe, a resonant pipe, connection devices and linear power generators, wherein two sides of the middle part of the resonant pipe are respectively communicated with the upstream section of the driving pipe and the downstream section of the driving pipe; two ends of the resonant pipe are provided with the connection devices and are connected with the linear power generators; or the two ends of the resonant pipe are enclosed, and the side of the resonant pipe is provided with the connection devices and is connected with the linear power generators; and the time-mean flow is a one-way fluid with significant kinetic energy, enters the driving pipe and induces the generation of a sound field in the resonant pipe, thus driving the linear power generator to generate electricity. The time-mean flow power generation device disclosed by the invention is simple in structure, has a long service life, is maintenance free, and is an efficient and reliable method for utilizing the widely existing pipeline fluid energy, wind energy and the like.
Description
Technical field
The present invention relates to Blast Furnace Top Gas Recovery Turbine Unit (TRT) and method, relate in particular to a kind of based on the time current-sharing and alternating flow coupling Blast Furnace Top Gas Recovery Turbine Unit (TRT) and method.
Background technology
Shi Junliu, also claim average flow (Mean flow), refers to the one-way fluid flow with remarkable kinetic energy, comprises air-flow, current etc. in natural wind, pipeline.Just current-sharing sometimes swashs the example of sound in daily life: when the bottleneck level facing to vertically placing is blown, can hear the buzz spread out of in bottle, the air-flow blown out in this explanation mouthful (time current-sharing) has caused sound oscillation (self-oscillation) in bottle.From the aeroacoustics angle, this phenomenon can be summarized as the time current-sharing with certain kinetic energy and induces regular air sound field with alternating flow characteristic, and it has complicated energy transfer process behind, at first, when air-flow skimmed over, unstable viscous boundary layer broke away from bottleneck; Secondly, the formation vortex structure is rolled with the form of whirlpool again at bottleneck in the boundary layer of disengaging, and to the sound field transferring energy in bottle; Again, the existence of the transmission of energy and sound field has affected again the formation of whirlpool subsequently conversely.Whole process forms an energy back loop, has the resonance characteristic of height.If the air-flow blown out in mouth is changed into to high-velocity duct air-flow or natural wind, bottle changes special single-ended opening airtight cavity into, high velocity air can transmit large many energy in cavity, thereby induce a standing-wave sound field with large acoustic density, instant current-sharing induces stable sound field under special plumbing installation, when this effect was called, current-sharing swashed acoustic effect.
The Naudascher of Germany Karlsru university and the Rockwell of U.S. Lehigh university according to form mechanism the time current-sharing swash sound and be divided into three major types: 1) fluid-power oscillation mode, feature is the inherent instability that vibration comes from Fluid Flow in A, and pure fluid-power vibration only betides cavity depth and with oscillation wavelength, compares very little situation; 2) fluid-resonance oscillations type, feature are that fluid oscillating is subjected to resonant wave (standing-wave sound field) effects remarkable, and frequency is higher, and the degree of depth of cavity and wavelength are in same magnitude; 3) fluid-elastic oscillation type, feature be fluid oscillating and solid boundaries sports coupling together, this type of vibration betides the larger displacement of one or more walls experience when cavity, and enough to the time current-sharing the disturbance of sheared edge interlayer apply reaction.Since last century the seventies, research for fluid-resonance oscillations increases gradually, the object of this class research can be abstracted into a main flow pipeline and the airtight branch road of single-ended opening that sectional dimension is suitable, fluid-phase in the two is intercommunicated, what in fluidized bed of uniform flow field while in the main flow pipeline being, airtight branch road, set up is standing-wave sound field.As shown in Figure 1, the branch road cavity in such vibration is that (λ=4L), curve means that the pressure amplitude of standing-wave sound field distributes to 1/4 wave resonator to typical decussate texture schematic diagram.
The purpose of most of early-stage Study is structural vibration, fatigue rupture and the noise that in the eliminate fluid conveyance conduit, the self-excitation hard oscillation causes.In fact, Shi Junliu swashs acoustic effect and also derives a kind of effective energy utilization mode, existing experimental study shows, during natural wind etc., current-sharing induces the standing-wave sound field with high-energy-density and stabilized frequency characteristic in airtight cavity, and its pressure amplitude can reach 15%.Therefore, by the time current-sharing swash acoustic effect can by the time current-sharing Conversion of Energy be acoustic energy, and be used to driving the linear electric generator generating.
Linear electric generator is to utilize electromagnetic induction principle can convert mover reciprocating motion machinery the device of electric energy to, can be directly by the time current-sharing swash the pressure oscillation that acoustic effect produces and drive.
For linear electric generator, the consumption sound merit amount of generator can be expressed as:
In formula (1),
With
Mean respectively pressure complex amplitude and volume flow, * means complex conjugate.
The electric work of linear electric generator output simultaneously can be expressed as:
In formula (2), Z means the external circuit impedance,
The complex amplitude that means the current wave momentum.In recent years, by the improvement of the key technologies such as some sealings, linear electric generator has had very high acoustic-electric conversion efficiency, generally can reach 90% left and right.
This patent by the time current-sharing swash acoustic effect and linear electric generator is coupled, thereby form an independently Blast Furnace Top Gas Recovery Turbine Unit (TRT).
Summary of the invention
The object of the invention is to adopt novel energy utilization patterns, provide a kind of based on the time current-sharing and alternating flow coupling Blast Furnace Top Gas Recovery Turbine Unit (TRT) and method.
Based on the time current-sharing and alternating flow coupling Blast Furnace Top Gas Recovery Turbine Unit (TRT) comprise driving tube Upstream section 1, driving tube tract 2, resonatron 3, jockey 4 and linear electric generator; In resonatron 3 both sides, middle part, with driving tube Upstream section 1, driving tube tract 2, communicate respectively, resonatron 3 two ends are provided with jockey 4 and are connected with linear electric generator; Perhaps resonatron 3 closed at both ends, be provided with jockey 4 in resonatron 3 sides and be connected with linear electric generator.
The cross section of described driving tube Upstream section 1 and driving tube tract 2 is: circle or quadrangle, the appearance profile of driving tube Upstream section 1 and driving tube tract 2 is: uiform section pipe or reducer pipe.
The cross section of described resonatron 3 is: circle or quadrangle, the appearance profile of resonatron 3 is: uiform section amasss the branch type pipe that pipe, reducer pipe or an end have a plurality of branches.
Described linear electric generator is moving-magnetic type or moving-coil type linear electric generator, described moving-magnetic type is sent out permanent magnet 8 in linear electric generator and is moving component, and by piston rod 10, link together with supporting spring 9, generator piston 6, coil 7 is around the inside that is fixed on generator; Coil 7 in described moving-coil type linear electric generator is moving component, and is arranged on generator piston 6, and generator piston 6 links together by piston rod 10 and support spring 9, and permanent magnet 8 is fixed on the inside of generator.
Based on the time current-sharing and alternating flow coupling electricity-generating method be: the time current-sharing flow through in the driving tube geometric catastrophe of driving tube Upstream section 1 and resonatron 3 junctions, the boundary layer fluid of driving tube Upstream section 1 is come off, and form whirlpool at the opening part of resonatron 3, stagnation fluid positive energy exchange in whirlpool and resonatron 3, cause the self-oscillation of resonatron 3 inner fluids, this by the time current-sharing swash the pressure oscillation that acoustic effect produces and act on the generator piston 6 of linear electric generator, make it drive permanent magnet 8 or coil 7 rectilinear motion periodically in magnetic field, the induced electromotive force produced is drawn electric energy by external load 12, the conversion process of equal stream energy-sound field energy-electric energy while finally having completed.
When described, current-sharing is: the one-way fluid with remarkable kinetic energy.
Described one-way fluid with remarkable kinetic energy is: wind or pipeline fluid.
The time current-sharing Blast Furnace Top Gas Recovery Turbine Unit (TRT) that the present invention proposes is different from the Blast Furnace Top Gas Recovery Turbine Unit (TRT) that existing mode drives fully.At first this device is based on aeroacoustics, by the time current-sharing be converted into a frequency stabilization, have than the standing-wave sound field of high fluence density.Secondly, according to operating characteristic and the layout needs of linear electric generator, can change the quantity of size, cross sectional shape and the resonatron of pipeline, to obtain best matching performance.Especially, this energy conversion device is simple in structure, the life-span is long, efficiency is high, for the pipeline fluid that utilizes extensive existence can and wind energy etc. a kind of novelty, reliable method are provided.
The accompanying drawing explanation
Current-sharing Blast Furnace Top Gas Recovery Turbine Unit (TRT) principle schematic when Fig. 1 is;
Fig. 2 be with the double-piston linear electric generator the time current-sharing Blast Furnace Top Gas Recovery Turbine Unit (TRT) structural representation;
Fig. 3 be with the single-piston linear power generation machine the time current-sharing Blast Furnace Top Gas Recovery Turbine Unit (TRT) structural representation;
In figure: driving tube Upstream section 1, driving tube tract 2, resonatron 3, jockey 4, dual Piston linear electric generator 5, generator piston 6, coil 7, permanent magnet 8, support spring 9, piston rod 10, bracing frame 11, external load 12, single piston type straight line generator 13.
Embodiment
The Shi Junliu Blast Furnace Top Gas Recovery Turbine Unit (TRT) comprises driving tube Upstream section 1, driving tube tract 2, resonatron 3, jockey 4 and linear electric generator; In resonatron 3 both sides, middle part, with driving tube Upstream section 1, driving tube tract 2, communicate respectively, resonatron 3 two ends are provided with jockey 4 and are connected with linear electric generator; Perhaps resonatron 3 closed at both ends, be provided with jockey 4 in resonatron 3 sides and be connected with linear electric generator.
The cross section of described driving tube Upstream section 1 and driving tube tract 2 is: circle or quadrangle, the appearance profile of driving tube Upstream section 1 and driving tube tract 2 is: uiform section pipe or reducer pipe.
The cross section of described resonatron 3 is: circle or quadrangle, the appearance profile of resonatron 3 is: uiform section amasss the branch type pipe that pipe, reducer pipe or an end have a plurality of branches.
Described linear electric generator is moving-magnetic type or moving-coil type linear electric generator, described moving-magnetic type is sent out permanent magnet 8 in linear electric generator and is moving component, and by piston rod 10, link together with supporting spring 9, generator piston 6, coil 7 is around the inside that is fixed on generator; Coil 7 in described moving-coil type linear electric generator is moving component, and is arranged on generator piston 6, and generator piston 6 links together by piston rod 10 and support spring 9, and permanent magnet 8 is fixed on the inside of generator.
Based on the time current-sharing and alternating flow coupling electricity-generating method be: the time current-sharing flow through in the driving tube geometric catastrophe of driving tube Upstream section 1 and resonatron 3 junctions, the boundary layer fluid of driving tube Upstream section 1 is come off, and form whirlpool at the opening part of resonatron 3, stagnation fluid positive energy exchange in whirlpool and resonatron 3, cause the self-oscillation of resonatron 3 inner fluids, this by the time current-sharing swash the pressure oscillation that acoustic effect produces and act on the generator piston 6 of linear electric generator, make it drive permanent magnet 8 or coil 7 rectilinear motion periodically in magnetic field, the induced electromotive force produced is drawn electric energy by external load 12, the conversion process of equal stream energy-sound field energy-electric energy while finally having completed.
When described, current-sharing is: the one-way fluid with remarkable kinetic energy.
Described one-way fluid with remarkable kinetic energy is: wind or pipeline fluid.
It should be noted that: the linear electric generator be applied in this patent can have multiple pattern, and pattern commonly used mainly contains moving-iron type linear electric generator, moving-magnetic linear generator and moving-coil type linear electric generator.The linear electric generator adopted in Fig. 2 is dual Piston linear electric generator 5, and the linear electric generator adopted in Fig. 3 is single piston type straight line generator 13.Linear electric generator, except being arranged in the two ends of resonatron 3, can also be laid on the side wall surface of resonatron 3 according to distribution of sound field.According to operating characteristic and the layout needs of linear electric generator, the quantity of the size of pipeline, cross sectional shape and resonatron in the current-sharing Blast Furnace Top Gas Recovery Turbine Unit (TRT) in the time of can changing, to obtain best matching performance.The type of attachment of resonatron and driving tube Upstream section and driving tube tract can be right angle or fillet pattern, and the sound field intensity just excited under same time average velocity is different.Resonatron can be in the situation that do not affect internal acoustic field and do not cause that larger dissipation is arbitrarily crooked in addition, also needn't be vertical with driving tube, can become angle arbitrarily, and as long as can inspire stable sound field, just can drive Blast Furnace Top Gas Recovery Turbine Unit (TRT) work.
Claims (5)
- One kind based on the time current-sharing and alternating flow coupling Blast Furnace Top Gas Recovery Turbine Unit (TRT), it is characterized in that comprising driving tube Upstream section (1), driving tube tract (2), resonatron (3), jockey (4) and linear electric generator; In both sides, resonatron (3) middle part, with driving tube Upstream section (1), driving tube tract (2), communicate respectively, resonatron (3) two ends are provided with jockey (4) and are connected with linear electric generator; Perhaps resonatron (3) closed at both ends, be provided with jockey (4) and be connected with linear electric generator in resonatron (3) side;The cross section of described driving tube Upstream section (1) and driving tube tract (2) is: circle or quadrangle, and the appearance profile of driving tube Upstream section (1) and driving tube tract (2) is: uiform section pipe or reducer pipe;The cross section of described resonatron (3) is: circle or quadrangle, and the appearance profile of resonatron (3) is: uiform section amasss the branch type pipe that pipe, reducer pipe or an end have a plurality of branches; The type of attachment of resonatron and driving tube Upstream section and driving tube tract is right angle or fillet pattern.
- According to claim 1 a kind of based on the time current-sharing and alternating flow coupling Blast Furnace Top Gas Recovery Turbine Unit (TRT), it is characterized in that: described linear electric generator is moving-magnetic type or moving-coil type linear electric generator, it is moving component that described moving-magnetic type is sent out permanent magnet in linear electric generator (8), and by piston rod (10), link together with supporting spring (9), generator piston (6), coil (7) is around the inside that is fixed on generator; Coil (7) in described moving-coil type linear electric generator is moving component, and be arranged on generator piston (6), generator piston (6) links together with supporting spring (9) by piston rod (10), and permanent magnet (8) is fixed on the inside of generator.
- A use as device as described in claim 1 based on the time current-sharing and alternating flow coupling electricity-generating method, it is characterized in that: the time current-sharing flow through in the driving tube geometric catastrophe of driving tube Upstream section (1) and resonatron (3) junction, the boundary layer fluid of driving tube Upstream section (1) is come off, and form whirlpool at the opening part of resonatron (3), stagnation fluid positive energy exchange in whirlpool and resonatron (3), cause the self-oscillation of resonatron (3) inner fluid, this by the time current-sharing swash the pressure oscillation that acoustic effect produces and act on the generator piston (6) of linear electric generator, make it drive permanent magnet (8) or coil (7) rectilinear motion periodically in magnetic field, the induced electromotive force produced is drawn electric energy by external load (12), the conversion process of equal stream energy-sound field energy-electric energy while finally having completed.
- 4. according to claim 3The electricity-generating method of described current-sharing and alternating flow coupling when a kind of, it is characterized in that: when described, current-sharing is: the one-way fluid with remarkable kinetic energy.
- 5. according to claim 4The electricity-generating method of described current-sharing and alternating flow coupling when a kind of, it is characterized in that: described one-way fluid with remarkable kinetic energy is: wind or pipeline fluid.
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| CN2011102828802A CN102377315B (en) | 2011-09-22 | 2011-09-22 | Power generation device and method based on coupling effect of time-meflow and alternating flow |
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| CN2011102828802A CN102377315B (en) | 2011-09-22 | 2011-09-22 | Power generation device and method based on coupling effect of time-meflow and alternating flow |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101256040A (en) * | 2008-04-03 | 2008-09-03 | 浙江大学 | Hot sound refrigerating machine driven by wind energy |
| CN202210747U (en) * | 2011-09-22 | 2012-05-02 | 浙江大学 | Generating set based on coupling effect of mean flow and alternating flow |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101256040A (en) * | 2008-04-03 | 2008-09-03 | 浙江大学 | Hot sound refrigerating machine driven by wind energy |
| CN202210747U (en) * | 2011-09-22 | 2012-05-02 | 浙江大学 | Generating set based on coupling effect of mean flow and alternating flow |
Non-Patent Citations (2)
| Title |
|---|
| 余炎.正十字型时均流激声发动机的数值模拟和初步实验研究.《中国优秀硕士学位论文全文数据库 工程科技II辑》.2011,(第07期),第2、22-23页. |
| 正十字型时均流激声发动机的数值模拟和初步实验研究;余炎;《中国优秀硕士学位论文全文数据库 工程科技II辑》;20110715(第07期);第2、22-23页 * |
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