CN106438243B - A kind of thermal-magnetic power generation system of Standing-wave Thermoacoustic Prime Moves driving - Google Patents
A kind of thermal-magnetic power generation system of Standing-wave Thermoacoustic Prime Moves driving Download PDFInfo
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- CN106438243B CN106438243B CN201610932400.5A CN201610932400A CN106438243B CN 106438243 B CN106438243 B CN 106438243B CN 201610932400 A CN201610932400 A CN 201610932400A CN 106438243 B CN106438243 B CN 106438243B
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N15/00—Thermoelectric devices without a junction of dissimilar materials; Thermomagnetic devices, e.g. using the Nernst-Ettingshausen effect
- H10N15/20—Thermomagnetic devices using thermal change of the magnetic permeability, e.g. working above and below the Curie point
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/06—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K35/00—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit
- H02K35/06—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit with moving flux distributors, and both coil systems and magnets stationary
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The present invention provides a kind of thermal-magnetic power generation systems of Standing-wave Thermoacoustic Prime Moves driving, including Standing-wave Thermoacoustic Prime Moves and pyromagnetic generator；The pyromagnetic generator, which is fixed on the soft magnet plate being arranged in Standing-wave Thermoacoustic Prime Moves, to be folded on (7), the soft magnet plate is folded (7) and is stacked in parallel by several soft magnetic sheets, the soft magnet plate is folded (7) and is arranged radially on the magnetic loop of pyromagnetic generator, and the direction of propagation of the axial sound wave generated with thermoacoustic engine is overlapped；The Standing-wave Thermoacoustic Prime Moves fold (7) by soft magnet plate and generate thermoacoustic effect, and the pyromagnetic generator folds (7) by soft magnet plate and generates thermo-magnetic effect.The soft magnet plate that pyromagnetic generator is coupled in Standing-wave Thermoacoustic Prime Moves by thermal-magnetic power generation system provided by the invention is stacked on, above-mentioned multiplexing functionally is stacked in by soft magnet plate, so that whole system absolutely not moving component, system structure is more compact and simple, and system damping is reduced, effectively increase the service life of system.
Description
Technical field
The present invention relates to thermomagnetic generation fields, and in particular to a kind of thermomagnetic generation system of Standing-wave Thermoacoustic Prime Moves driving
System.
Background technique
Magnetic energy can be converted heat into, the device that magnetic energy is converted into power output is finally referred to as pyromagnetic generator again
(TMG, Thermomagnetic Generator).The principle of thermomagnetic generation is made using the soft magnetic materials with thermo-magnetic effect
It is in Curie temperature TCIt is nearby periodically heated and is cooled down, since temperature is more than Curie temperature to soft magnetic materials after heated
When, paramagnet is become by ferromagnet and makes magnetic generation greatly variation, is sent out so as to cause in magnetic loop by the magnetic flux of coil
It is raw to change, induced current is finally generated in coil.
In 19th century, tesla and Edison study thermomagnetic generation, and have invented respective pyromagnetic hair
Motor model, but limited by power generation magnetic material and driving magnetic field at that time, fail to be applied to reality.In 20th century
In the later period, due to the development restriction by thermal-magnetizing material, people rest on the theoretical calculation stage to the research of thermomagnetic generation mostly.Into
After entering 21 century, with the fast development of thermal-magnetizing material, thermomagnetic generation increasingly becomes the research hotspot of field of waste heat utilization.
Thermoacoustic effect is to be based on thermoacoustic effect the phenomenon that mutually conversion between thermal energy and sound energy, generate height using heat
Intensity sound waves are without being referred to as thermoacoustic engine (thermoacoustic compressor) by means of the device of any mechanical moving element.In recent years
Come, deepens continuously with the fast development of domestic and international thermoacoustic engine and to Oscillating flow understanding, utilize thermoacoustic engine
Realize that the further development for quickly heating and being cooled to thermomagnetic generation technology of soft magnetic materials provides new approaches.
Fig. 1 is that the thermoacoustic pyromagnetic generator structure that the patent (publication No.: US2006/0266041A1) of Oscar L proposes is shown
It is intended to, which is mainly made of magnetic magnetic loop switch 1a, magnetic field generation device 2a, generator unit stator 5a and returns
Road, the magnetic loop switch 1a are made of soft magnetic materials, and waveguide pipe 4a switchs magnetic loop using the temperature gradient of sound wave 6a
1a carries out periodically alternately heating and cooling, so that the soft magnetic materials temperature of magnetic loop switch 1a is in its Curie temperature TCNear
Fluctuation up and down is alternately disconnected and is closed so as to cause magnetic loop, and finally, the variation in magnetic field is so that be wrapped in outside generator unit stator 5a
Coil 3a induction generate exchange electricity output.Since the direction of propagation of sound wave 6a and the axial direction of magnetic loop switch 1a are just vertical,
So that sound wave can set up temperature in the radial direction of magnetic loop switch 1a during heating to magnetic loop switch 1a and is cooling
Spending gradient largely influences magnetic as a result, leading to the soft magnetic materials uneven heating at left and right sides of magnetic loop switch 1a
The disconnection and closure in circuit, to reduce the generating efficiency of generator.
Fig. 2 is a kind of pyromagnetic hair for Thermoacoustic engine that the patent (publication No.: CN102403447B) of Luo Ercang et al. proposes
Electric system passes through the structure for optimizing soft magnetic bodies 1b: using the structure being formed by stacking by multi-disc soft magnetic materials thin slice interval, Yi Jiyou
Change the position of soft magnetic bodies: the direction of propagation of sound wave is to be directed toward air reservoir 3b along resonatron 2b, and the axial direction of soft magnetic bodies 1b is also edge
Resonatron 2b is directed toward the direction of air reservoir 3b, keeps the direction of propagation of sound wave axially coincident with soft magnetic bodies, effectively prevents shown in fig. 1
The deficiency of thermoacoustic pyromagnetic generator in the design.But in the thermal-magnetic power generation system of the Thermoacoustic engine, in thermoacoustic engine
Soft magnetic bodies 1b in regenerator 4b and thermomagnetic generation device splits the different location in sound function propagation path, so that the Thermoacoustic engine
Thermal-magnetic power generation system structure is complicated and not compact enough.Further, since pyromagnetic generator is exchanged heat using liquid oscillator and soft magnetic bodies,
Because the mass inertia of liquid oscillator is larger, so that thermoacoustic system behaves, vibration is larger, and the damping of simultaneity factor is also larger, holds
Easily there is the phenomenon that " weakening ", cause thermoacoustic engine out of service, and then influences the operation of entire thermal-magnetic power generation system.
Summary of the invention
It is an object of the present invention to overcome the complicated technology of the thermal-magnetic power generation system of existing Thermoacoustic engine to ask
Topic provides a kind of thermomagnetic generation compact-sized, system damping is smaller, Standing-wave Thermoacoustic Prime Moves with long service life drive
System.
In order to achieve the above objectives, the present invention provides a kind of thermal-magnetic power generation system of Standing-wave Thermoacoustic Prime Moves driving, packets
It includes: a Standing-wave Thermoacoustic Prime Moves and the thermomagnetic generation for being installed on the folded place of the soft magnet plate being arranged in Standing-wave Thermoacoustic Prime Moves
Machine.The soft magnet plate is folded be Standing-wave Thermoacoustic Prime Moves driving thermal-magnetic power generation system core component, by several soft magnetism materials
Structure made of tablet stacks in parallel, the soft magnet plate is folded to be arranged radially on the magnetic loop of pyromagnetic generator, axial and heat
The direction of propagation for the sound wave that phonomotor generates is overlapped；The Standing-wave Thermoacoustic Prime Moves generate thermoacoustic effect by the way that soft magnet plate is folded
It answers, for driving gas working medium reciprocating vibration, the pyromagnetic generator generates thermo-magnetic effect by the way that soft magnet plate is folded, so that soft magnetism
Plate folds the magnetic conductivity generating period variation of itself, so that the magnetic resistance generating period in magnetic loop changes.
As a further improvement of the above technical scheme, the Standing-wave Thermoacoustic Prime Moves are for generating reciprocal alternation
Oscillating air flow, the Standing-wave Thermoacoustic Prime Moves are arranged in one end of magnetic loop, including along magnetic loop to the heat being sequentially communicated outside
Chamber, high-temperature heat-exchanging, soft magnet plate be folded, room temperature heat exchanger and resonatron, the endcapped of the hot chamber and resonatron.
As a further improvement of the above technical scheme, the end of the resonatron is connected with air reservoir.
As a further improvement of the above technical scheme, the resonatron is tapered or section arbitrarily changes along axial direction
Structure.
As a further improvement of the above technical scheme, the soft magnet plate is folded is divided into multistage along the sound function direction of propagation, and each section
The Curie temperature of soft magnetic sheet is different, from high-temperature heat-exchanging to Curie's temperature of each section of soft magnetic sheet room temperature heat exchanger
Degree is in ladder downward trend along the sound function direction of propagation, and the Curie temperature of each section of soft magnetic sheet is respectively less than the temperature of high-temperature heat-exchanging
Degree.
As a further improvement of the above technical scheme, the thermomagnetic generation device utilizes the oscillating air flow of reciprocal alternation will
The low grade heat energy of the Standing-wave Thermoacoustic Prime Moves high-temperature heat-exchanging is converted into power output, which includes: soft
Magnetic sheet is folded, upper arch magnetizer, lower arch magnetizer, permanent magnet and the coil being wound around outside magnetizer；The soft magnet plate
Folded, upper arch magnetizer, lower arch magnetizer and permanent magnet constitute magnetic loop.
As a further improvement of the above technical scheme, the permanent magnet is the biggish Ru-Fe-Mn of magnetic energy product or operating temperature
Higher samarium-cobalt magnet, or be electromagnet.
As a further improvement of the above technical scheme, the soft magnetic sheet material is that iron and iron-based alloy or perm close
Gold or ferrite compounds or amorphous metal glass.
As a further improvement of the above technical scheme, the gas working medium of the Standing-wave Thermoacoustic Prime Moves is helium or nitrogen
Gas or carbon dioxide etc. have the gas working medium of low Pr number.
As a further improvement of the above technical scheme, it is deep to be less than or equal to its thermal break-through for the thickness of the soft magnetic sheet
Degree, the thermal penetration depth calculating formula of the soft magnetic sheet areWherein, κ is soft magnetic materials thermal conductivity, and ρ is soft
Magnetic density of material, cpFor soft magnetic materials specific heat at constant pressure, the π of ω=2 f is gas motion angular frequency, and f is system frequency.
A kind of thermal-magnetic power generation system advantage of Standing-wave Thermoacoustic Prime Moves driving of the invention is:
Thermal-magnetic power generation system provided by the invention folds the soft magnet plate that pyromagnetic generator is coupled in Standing-wave Thermoacoustic Prime Moves
On, the soft magnet plate is folded to be process using soft magnetic materials, with dual function, can generate thermoacoustic effect for driving gas
Body working medium reciprocating vibration can also generate thermo-magnetic effect and the magnetic conductivity generating period of itself is changed.It is stacked in by soft magnet plate
Above-mentioned multiplexing functionally, so that whole system absolutely not moving component, system structure is more compact and simple, and reduces
System damping effectively increases the service life of system.
Detailed description of the invention
Fig. 1 is the thermoacoustic pyromagnetic generator structural schematic diagram that Oscar L is proposed.
Fig. 2 is a kind of thermal-magnetic power generation system structural schematic diagram for Thermoacoustic engine that Luo Ercang et al. is proposed.
Fig. 3 is the thermal-magnetic power generation system structural schematic diagram of the Standing-wave Thermoacoustic Prime Moves driving in the embodiment of the present invention one.
Fig. 4 is the thermal-magnetic power generation system structural schematic diagram of the Standing-wave Thermoacoustic Prime Moves driving in the embodiment of the present invention two.
Fig. 5 is the thermal-magnetic power generation system structural schematic diagram of the Standing-wave Thermoacoustic Prime Moves driving in the embodiment of the present invention three.
Fig. 6 is the working principle diagram that Standing-wave Thermoacoustic Prime Moves soft magnet plate is folded in the present invention.
Appended drawing reference
1a, magnetic loop switch 2a, magnetic field generation device 3a, coil
4a, waveguide pipe 5a, generator unit stator 6a, sound wave
1b, soft magnetic bodies 2b, resonatron 3b, air reservoir
4b, regenerator 1, permanent magnet 2, coil
3, upper arch magnetizer 4, lower arch magnetizer 5, hot chamber
6, high-temperature heat-exchanging 7, soft magnet plate fold 8, room temperature heat exchanger
9, resonatron 10, air reservoir
Specific embodiment
With reference to the accompanying drawings and examples to a kind of thermomagnetic generation of Standing-wave Thermoacoustic Prime Moves driving of the present invention
System is described in detail.
A kind of thermal-magnetic power generation system of Standing-wave Thermoacoustic Prime Moves driving provided by the invention, including a standing wave type thermoacoustic
Engine and the pyromagnetic generator for being installed on the folded place of the soft magnet plate being arranged in the Standing-wave Thermoacoustic Prime Moves.The standing wave type heat
Phonomotor is used to generate the oscillating air flow of reciprocal alternation, and the pyromagnetic generator will be described using the oscillating air flow of reciprocal alternation
Low grade heat energy at Standing-wave Thermoacoustic Prime Moves high temperature heat exchanger is converted into power output.The soft magnet plate is folded by several
Soft magnetic sheet stacks in parallel, and the soft magnet plate is folded to be arranged radially on the magnetic loop of pyromagnetic generator, axial and heat
The direction of propagation for the sound wave that phonomotor generates is overlapped.
The soft magnetic sheet refers to easy remagnetization, is easy to the material to demagnetize in the absence of external magnetic field.It is described
Soft magnetic sheet iron and iron-based alloy or permalloy or ferrite compounds can be used or amorphous metal glass is made.Root
According to thermomagnetism, when soft magnetic sheet temperature is under Curie temperature, the very big ferromagnetism of magnetic conductivity is presented in soft magnetic sheet,
The magnetic resistance in the magnetic loop reduces at this time, and the magnetic flux in the coil on magnetic loop increases；When soft magnetic sheet temperature
When on Curie temperature, the paramagnetism of magnetic conductivity very little is presented in soft magnetic sheet, and the magnetic resistance in the magnetic loop increases at this time,
Magnetic flux in coil is reduced.As magnetic flux changes in coil, so that coil-induced generation electric current.
Embodiment one
Fig. 3 is a kind of thermal-magnetic power generation system structure of Standing-wave Thermoacoustic Prime Moves driving provided in the embodiment of the present invention one
Schematic diagram, the thermal-magnetic power generation system include a Standing-wave Thermoacoustic Prime Moves and are installed on soft magnet plate in Standing-wave Thermoacoustic Prime Moves
Pyromagnetic generator at folded 7.The soft magnet plate folded 7 is the core of the thermal-magnetic power generation system of Standing-wave Thermoacoustic Prime Moves driving
Part refers to that the plate being process by several soft magnetic sheets is folded, and the magnetic that the soft magnet plate folded 7 is arranged radially in pyromagnetic generator returns
On the road, the direction of propagation of the axial sound wave generated with thermoacoustic engine is overlapped；It is with dual function: can generate thermoacoustic effect
Applied to driving gas working medium reciprocating vibration, it can also generate thermo-magnetic effect and the magnetic conductivity generating period of itself is changed, into
And the magnetic resistance generating period in magnetic loop is changed.
As shown in figure 3, in the present embodiment, the Standing-wave Thermoacoustic Prime Moves are arranged in one end of magnetic loop, including
7, room temperature heat exchanger 8 and resonatron 9 are folded to the hot chamber 5, high-temperature heat-exchanging 6, soft magnet plate being sequentially communicated outside along magnetic loop, it is described
The endcapped of hot chamber 5 and resonatron 9.The vibration for the reciprocal alternation that the pyromagnetic generator is generated using Standing-wave Thermoacoustic Prime Moves
Air-flow is swung, converts power output for the low grade heat energy of Standing-wave Thermoacoustic Prime Moves high temperature heat exchanger 6, the pyromagnetic generator
It include: that soft magnet plate folds 7, upper arch magnetizer 3, permanent magnet 1, lower arch magnetizer 4 and the coil 2 being wound around outside magnetizer.
The soft magnet plate folds 7, upper arch magnetizer 3, lower arch magnetizer 4 and permanent magnet 1 and constitutes magnetic loop.Based on above structure
Thermal-magnetic power generation system, the permanent magnet 1 can be Ru-Fe-Mn or samarium-cobalt magnet or electromagnet.
It should be noted that soft magnet plate folded 7 can be stacked for soft magnetic sheet made of parallel plate structure or column structure,
It is made using processing methods such as wire cutting, electrochemical corrosion.To guarantee good thermo-contact between gas and soft magnetic sheet,
The hydraulic diameter of gas flow should be less than thermal break-through of the gas working medium under thermal-magnetic power generation system working frequency during soft magnet plate is folded
Depth.The gas working medium of the Standing-wave Thermoacoustic Prime Moves can be helium or nitrogen or carbon dioxide.
The hydraulic diameter refers in noncircular cross section channel flow, and a suitable characteristic length is often taken to calculate it
Reynolds number, this feature length are hydraulic diameter.The common expression formula of hydraulic diameter is: 4A/P, i.e. four times of flow channel cross-section
Area A is divided by wetted perimeter P.
To avoid increasing invalid thermal capacitance and reducing soft magnetic bodies regenerator axial thermal conductivity, soft magnetic sheet thickness should be equal to or small
In its own thermal penetration depth, soft magnet material thermal penetration depth calculating formula isWherein κ is soft magnetic materials heat
Conductance, ρ are soft magnetic materials density, cpFor soft magnetic materials specific heat at constant pressure, the π of ω=2 f is gas motion angular frequency, and f is system frequency
Rate.The system frequency refers to that thermal-magnetic power generation system completes the number of circulation within the unit time.
In this example, the soft magnet plate folded 7 is divided into multistage, the Curie of each section of soft magnetic sheet along the sound function direction of propagation
Temperature is different, from high-temperature heat-exchanging 6 to the Curie temperature of each section of soft magnetic sheet room temperature heat exchanger 8 along sound function propagation side
To being in ladder downward trend, i.e. the curie point close to the soft magnetic sheet of high-temperature heat-exchanging 6 gradually rises, and exchanges heat close to room temperature
The soft magnetic sheet curie point of device 8 gradually decreases.The Curie temperature of each section of soft magnetic sheet is respectively less than the temperature of high-temperature heat-exchanging 6
Degree.
In addition, in the present embodiment, the Standing-wave Thermoacoustic Prime Moves are designed as half-wavelength Standing Wave Thermoacoustic Engine.?
The both ends of one section of resonatron (or referred to as acoustic waveguide tube) all give rigid material closing, which can only in resonance oscillations
Enough show as the antinode (node of speed) of acoustic pressure.Sound-filed simulation is based on standing wave state, and when base frequency oscillation, resonator presentation is connect
Nearly half-wavelength feature, to be designed to half-wavelength Standing Wave Thermoacoustic Engine.
The work of the thermal-magnetic power generation system of the Standing-wave Thermoacoustic Prime Moves driving provided in the present embodiment is provided
Process:
The high-temperature heat-exchanging 6 of the Standing-wave Thermoacoustic Prime Moves absorbs external high temperature heat from heat source and forms temperature end, described
External high temperature heat source can be thermal energy, industrial waste heat, fuel combustion heat, biomass energy, the geothermal energy etc. of solar thermal collector acquisition
Low-grade heat source.The room temperature heat exchanger 8 exchanges heat to form indoor temperature end with recirculated cooling water, and temperature is formed on 7 to fold in soft magnet plate
Gradient is spent, when temperature gradient is more than Critical Temperature Gradient, under the temperature gradient conditions, Standing-wave Thermoacoustic Prime Moves start work
Make, so that gas starts self-oscillation and converts heat energy into sound function.It is the device work of gas self-excitation starting of oscillation, work that soft magnet plate is folded
Make principle as shown in fig. 6, its principle is: assuming that tiny gas group B is clipped between soft magnetic sheet and makees back and forth around equilbrium position 2
Oscillation, the extreme position of two sides is 1 and 3 respectively.Micelle undergone respectively during from 1 to 3 and from 3 to 1 adiabatic expansion and
Compression process, micelle just maintain level pressure state and occur to exchange heat with soft magnetic sheet to reach hot flat only at extreme position 1 and 3
Weighing apparatus.There is lateral temperature gradient in soft magnetic sheet, and temperature gradually decreases from left to right at the beginning of the cycle, in practice
Such temperature gradient is to absorb external high temperature heat from heat source by high-temperature heat-exchanging to realize.Firstly, micelle B at position 3 with
Soft magnetic sheet reaches thermal balance Ts,3；When pressure rise, its end motion to the left is simultaneously moved by equilbrium position 2 to position 1,
It occurs between soft magnetic sheet without heat exchange during this, i.e. adiabatic process；When it moves to position 1, if position 1,3
Between the soft magnetic sheet temperature difference be greater than air mass temperature change as caused by adiabatic compression, micelle B will from solid wall surface absorb heat Q1,
Temperature is increased to Ts,1And it externally expands；Then the pressure of micelle declines and starts to return, and transports by equilbrium position 2 to position 3
Dynamic, it occurs between soft magnetic sheet without heat exchange in the process for this, i.e. adiabatic expansion；When it moves to position 3, it
Temperature is still higher than the soft magnetic sheet temperature T of corresponding positions,3, then it is to soft magnetic sheet heat release Q3, and temperature is caused to decline
To Ts,3.Thermal energy is converted into sound function during this.The lateral length that single air mass displacement is folded relative to soft magnet plate is very small,
The conversion of heat to sound function is to pass through similar relay effect by numerous air mass to realize during Standing Wave Thermoacoustic Engine soft magnet plate is folded
's.
When gas is when soft magnet plate is folded in 7 and to be flowed from left to right (from high-temperature heat-exchanging 6 to room temperature heat exchanger 8), gas to
Soft magnetic sheet releases heat, and the soft magnetic sheet in soft magnet plate folded 7 is heated, when soft magnetic sheet temperature is higher than material Curie
Temperature TCWhen, the paramagnetism of magnetic conductivity very little is presented in soft magnetic sheet, and the magnetic resistance in magnetic loop increases, and passes through in coil 2 at this time
Magnetic flux reduce.When gas is when soft magnet plate is folded in 7 and to be flowed from right to left (from room temperature heat exchanger 8 to high-temperature heat-exchanging 6), gas
Body absorbs heat from soft magnetic sheet, and the soft magnetic sheet in soft magnet plate folded 7 is cooled, and soft magnetic sheet temperature is lower than its Curie
Temperature TC, the very big ferromagnetism of magnetic conductivity is presented in soft magnetic sheet, and the magnetic resistance in magnetic loop reduces, and passes through in coil 2 at this time
Magnetic flux increases.Then, within a cycle of oscillation, primary reciprocal variation occurs for the magnetic flux in coil 2, according to faraday's electricity
Magnetic induction principle can generate induced electromotive force output alternating current on coil 2.
It can be seen that by the statement of the above system course of work and driven in Standing-wave Thermoacoustic Prime Moves provided in this embodiment
In dynamic thermal-magnetic power generation system, any mechanical moving element is not added, system structure is simple, and shown in Figure 2 pyromagnetic
Power generation system structure is compared, and system structure of the invention is more compact, and system damping is smaller, and the service life is longer.
Embodiment two
Fig. 4 is a kind of thermal-magnetic power generation system structure of Standing-wave Thermoacoustic Prime Moves driving provided in the embodiment of the present invention two
Schematic diagram including a Standing-wave Thermoacoustic Prime Moves and is installed on the pyromagnetic hair in Standing-wave Thermoacoustic Prime Moves at soft magnet plate folded 7
Motor.In the present embodiment, which is designed as quarter-wave Standing Wave Thermoacoustic Engine, for generating
The oscillating air flow of reciprocal alternation comprising: hot chamber 5, high-temperature heat-exchanging 6, soft magnet plate fold 7, room temperature heat exchanger 8, resonatron 9 and gas
Library 10.The pyromagnetic generator utilizes the oscillating air flow of reciprocal alternation by the low of Standing-wave Thermoacoustic Prime Moves high temperature heat exchanger 6
Grade thermal energy is converted into power output, comprising: soft magnet plate is folded 7, upper arch magnetizer 3, permanent magnet 1, lower arch magnetizer 4 and around
The coil 2 being located at outside magnetizer.
The system structure and principle that the thermal-magnetic power generation system provided in the present embodiment and embodiment one provide are essentially identical, area
Other point is: in order to reduce the acoustical energy losses on 9 Gu Bi of resonatron, and reducing the ruler of Standing-wave Thermoacoustic Prime Moves to a greater degree
Very little, the thermoacoustic engine is changed to quarter-wave Standing Wave Thermoacoustic Engine by original half-wavelength Standing Wave Thermoacoustic Engine,
An air reservoir 10 is additionally provided at a side ports of resonatron 9 simultaneously.
Resonatron 9 in the present embodiment is closed at one end, (or the limited big resonant cavity of connection) open at one end, and closed end is close to humorous
The acoustic pressure antinode of oscillation, open end is close to the antinode of hunting speed, and when base frequency oscillation, resonator is presented close to a quarter
The feature of wavelength, to be designed to quarter-wave Standing Wave Thermoacoustic Engine.
Since all off-energies are proportional to resonatron tube wall surface product, a quarter-wave resonatron loss
Energy only have half-wavelength resonatron half, to reduce the loss of energy.And quarter-wave resonance pipe energy
Reduce the size of complete machine more, to further reduce the size of Standing-wave Thermoacoustic Prime Moves.
Embodiment three
Fig. 5 is a kind of thermal-magnetic power generation system structure of Standing-wave Thermoacoustic Prime Moves driving provided in the embodiment of the present invention three
Schematic diagram including a Standing-wave Thermoacoustic Prime Moves and is installed on the pyromagnetic hair in Standing-wave Thermoacoustic Prime Moves at soft magnet plate folded 7
Motor.In the present embodiment, which is half-wavelength Standing Wave Thermoacoustic Engine, for generating reciprocal alternation
Oscillating air flow, comprising: hot chamber 5, high-temperature heat-exchanging 6, soft magnet plate fold 7, room temperature heat exchanger 8 and resonatron 9.The pyromagnetic generator
It is defeated that by the low grade heat energy of Standing-wave Thermoacoustic Prime Moves high temperature heat exchanger 6 electric energy is converted using the oscillating air flow of reciprocal alternation
Out, comprising: soft magnet plate folds 7, upper arch magnetizer 3, permanent magnet 1, lower arch magnetizer 4 and the coil being wound around outside magnetizer
2。
The system structure and principle that the thermal-magnetic power generation system provided in the present embodiment and embodiment one provide are essentially identical, area
Other point is: in order to reduce the acoustical energy losses on 9 Gu Bi of resonatron, improving thermoacoustic engine pressure ratio, the resonatron 9 is changed to bore
The resonatron that shape or section arbitrarily change along axial direction.Since resonatron is designed as the knot that taper or section arbitrarily change along axial direction
After structure, reduce the viscosity loss in resonatron, it is suppressed that the shock wave in resonatron, thus relative in embodiment one etc. it is straight
Diameter resonatron, the pressure ratio in 8 exit of room temperature heat exchanger in the present embodiment is available to be significantly improved.
It should be noted last that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting.Although ginseng
It is described the invention in detail according to embodiment, those skilled in the art should understand that, to technical side of the invention
Case is modified or replaced equivalently, and without departure from the spirit and scope of technical solution of the present invention, should all be covered in the present invention
Scope of the claims in.
Claims (10)
1. a kind of thermal-magnetic power generation system of Standing-wave Thermoacoustic Prime Moves driving, which is characterized in that including Standing-wave Thermoacoustic Prime Moves
And pyromagnetic generator；The pyromagnetic generator, which is fixed on the soft magnet plate being arranged in Standing-wave Thermoacoustic Prime Moves, to be folded on (7), described
Soft magnet plate fold (7) stacked in parallel by several soft magnetic sheets, the soft magnet plate fold (7) be arranged radially in pyromagnetic generator
Magnetic loop on, the axial direction of propagation with the sound wave of thermoacoustic engine generation is overlapped；The Standing-wave Thermoacoustic Prime Moves drive
Dynamic thermal-magnetic power generation system only includes 1 high-temperature heat-exchanging (6) and 1 room temperature heat exchanger (8)；The soft magnet plate is folded (7) and is located at
Between the high-temperature heat-exchanging (6) and room temperature heat exchanger (8) of Standing-wave Thermoacoustic Prime Moves；The Standing-wave Thermoacoustic Prime Moves pass through
Soft magnet plate folds (7) and generates thermoacoustic effect, and for driving gas working medium reciprocating vibration, the pyromagnetic generator is folded by soft magnet plate
(7) thermo-magnetic effect is generated, so that the magnetic resistance generating period in magnetic loop changes.
2. the thermal-magnetic power generation system of Standing-wave Thermoacoustic Prime Moves driving according to claim 1, which is characterized in that described
Standing-wave Thermoacoustic Prime Moves are arranged in one end of magnetic loop, including changing along magnetic loop to hot chamber (5), the high temperature being sequentially communicated outside
Hot device (6), soft magnet plate fold (7), room temperature heat exchanger (8) and resonatron (9), the end envelope of the hot chamber (5) and resonatron (9)
It closes.
3. the thermal-magnetic power generation system of Standing-wave Thermoacoustic Prime Moves driving according to claim 2, which is characterized in that described humorous
The end of vibration tube (9) is connected with air reservoir (10).
4. the thermal-magnetic power generation system of Standing-wave Thermoacoustic Prime Moves driving according to claim 2, which is characterized in that described
The structure that resonatron (9) is tapered or section arbitrarily changes along axial direction.
5. the thermal-magnetic power generation system of Standing-wave Thermoacoustic Prime Moves driving according to claim 2, which is characterized in that described soft
It is in ladder downward trend, and each soft magnetic materials that magnetic sheet, which folds the Curie temperature of each soft magnetic sheet in (7) along the sound function direction of propagation,
The Curie temperature of piece is respectively less than the temperature of high-temperature heat-exchanging (6).
6. the thermal-magnetic power generation system of Standing-wave Thermoacoustic Prime Moves driving according to claim 1, which is characterized in that described
Pyromagnetic generator includes: that soft magnet plate is folded (7), upper arch magnetizer (3), lower arch magnetizer (4), permanent magnet (1) and is wound around
Coil (2) outside magnetizer；The soft magnet plate folds (7), upper arch magnetizer (3), lower arch magnetizer (4) and permanent magnet
(1) magnetic loop is constituted.
7. the thermal-magnetic power generation system of Standing-wave Thermoacoustic Prime Moves according to claim 6 driving, which is characterized in that it is described forever
Magnet (1) is Ru-Fe-Mn or samarium-cobalt magnet or electromagnet.
8. the thermal-magnetic power generation system of Standing-wave Thermoacoustic Prime Moves driving according to claim 1, which is characterized in that described
Soft magnetic sheet is made of iron and iron-based alloy or permalloy or ferrite compounds or amorphous metal glass.
9. the thermal-magnetic power generation system of Standing-wave Thermoacoustic Prime Moves driving according to claim 1, which is characterized in that described to stay
The gas working medium of wave mode thermoacoustic engine is helium or nitrogen or carbon dioxide.
10. the thermal-magnetic power generation system of Standing-wave Thermoacoustic Prime Moves driving according to claim 1, which is characterized in that described
The thickness of soft magnetic sheet is less than or equal to its thermal penetration depth, and the thermal penetration depth calculating formula of the soft magnetic sheet isWherein, κ is soft magnetic materials thermal conductivity, and ρ is soft magnetic materials density, cpFor soft magnetic materials specific heat at constant pressure, ω
=2 π f are gas motion angular frequency, and f is system frequency.
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| CN1786465A (en) * | 2004-12-10 | 2006-06-14 | 中国科学院理化技术研究所 | Heat sound engine with gradually enlarged section resonant cavity |
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| CN104124334A (en) * | 2013-04-27 | 2014-10-29 | 中国科学院理化技术研究所 | Thermomagnetic power generation system driven by thermoacoustic engine |
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| CN1786465A (en) * | 2004-12-10 | 2006-06-14 | 中国科学院理化技术研究所 | Heat sound engine with gradually enlarged section resonant cavity |
| CN101647128A (en) * | 2007-03-28 | 2010-02-10 | Abb研究有限公司 | Thermomagnetic generator device and energy converting method |
| CN101275542A (en) * | 2008-04-09 | 2008-10-01 | 浙江大学 | Heat phonomotor capable of utilizing multi-temperature position heat power supply drive |
| CN102141017A (en) * | 2011-01-24 | 2011-08-03 | 北京理工大学 | Thermo-acoustic engine based on moving standing wave orthogonal-superposition sound field |
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