CN101260871B - Gas-liquid two-phase working substance coupled vibrations type thermo-acoustic engine - Google Patents
Gas-liquid two-phase working substance coupled vibrations type thermo-acoustic engine Download PDFInfo
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- CN101260871B CN101260871B CN2008100603713A CN200810060371A CN101260871B CN 101260871 B CN101260871 B CN 101260871B CN 2008100603713 A CN2008100603713 A CN 2008100603713A CN 200810060371 A CN200810060371 A CN 200810060371A CN 101260871 B CN101260871 B CN 101260871B
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Abstract
The invention discloses a gas-liquid two-phase working substance coupled vibration type thermoacoustic engine, which comprises a loop traveling wave thermoacoustic core, a U-shaped resonant pipe, a liquid piston, a resonant cavity and an acoustic impedance regulator which are connected with each other in turn, wherein, the loop traveling wave thermoacoustic core comprises a feedback pipe, a phonoreceptive pipe, an acoustic capacitance pipe, a first water cooler, a heat regenerator, a heater, a thermal buffer tube and a second water cooler which are connected with each other in turn; and the liquid piston consists of a liquid column which is formed by arrangement of room-temperature ionic liquid inside the U-shaped resonant pipe; the acoustic impedance regulator comprises a gas-liquid surge tank, a fluid level gauge, an exhaust valve, an inflation valve, a steel cylinder, a first gas-phase balancing valve, a second gas-phase balancing valve and a liquid-phase balancing valve. The gas-liquid two-phase working substance coupled vibration type thermoacoustic engine introduces the room-temperature ionic liquid provided with 'zero' vapor pressure characteristic into the prior thermoacoustic engine to form a gas-liquid two-phase working substance coupled vibrating system, realizes acoustic oscillation and thermoacoustic conversion of the reinforced thermoacoustic engine through the acoustic impedance regulator, improves the acoustic power output capacity, and realizes operation below 10 hertz under the condition of relatively small physical dimension.
Description
Technical field
The present invention relates to thermoacoustic engine, relate in particular to a kind of gas-liquid two-phase working substance coupled vibrations type thermo-acoustic engine.
Background technique
In recent years, only the hot machine of being made up of heat exchanger and pipeline section of heat sound is as the novel thermodynamic system of movement-less part fully, performance characteristic that flows because of its alternation and potential stability, reliability, long lifetime, can adopt the extremely concern of academia and industrial quarters of advantage such as heat energy driving, and obtain breakthrough.Aspect the thermoacoustic engine of simple employing gas working medium, the hot acoustic Stirling motor of travelling-wave type of high efficiency, high pressure ratio (1.4) is successfully developed; Novel Standing-Traveling Wave cascade connection type thermoacoustic engine comes out; Adopt the capable ripple thermoacoustic refrigeration system of hot acoustic Stirling engine-driving room temperature warm area to obtain 250W and 435W refrigerating capacity respectively at-22 ℃ and 0 ℃, COP significantly improves; And hot sound-driving single-stage and two-stage pulse tube cooling system have reached the low temperature of 34.1K and 18.1K respectively, and elastic membrane is separated the low frequency of okperation of duplexing matter technology realization and promoted pressure ratio in conjunction with the acoustic pressure amplifier is the key that cryogenic temperature obtains breakthrough.The frequency of okperation of above-mentioned thermoacoustic system is all in the 20Hz-100Hz scope, and the axial arrangement size is about 4m-10m.In order to realize the miniaturization of thermoacoustic system, according to the acoustic resonance theory, needing to adopt high frequency operating conditions, high frequency small thermoacoustic system usually is one of the research focus in heat sound field at present.The thermoacoustic engine resonant frequency of axial length 1m magnitude is hundreds of hertz, the thermoacoustic engine of centimetre magnitude, and its resonant frequency is up to thousands of hertz.Yet under the high frequency operating conditions, the design and the processing of thermal acoustic regenerator and cool and heat ends heat exchanger thereof face huge challenge, realize quite difficulty of high pressure ratio, big sound output output.And the low-frequency operation operating mode is for more being favored such as practical applications such as heat sound driving pulse pipe refrigeration.With liquid as aspect the hot machine working medium of heat sound, R﹠D work mainly concentrates on adopts theory and the experimental research of liquid metal sodium as the thermoacoustic driving magnetohydrodynamic electricity generation system of working medium, but because too small compressibility and the excessive thermal conductivity of liquid metal sodium causes system to move under the high pressure operating mode of 10MPa-20MPa, resonant frequency height (the model machine of system axial length 1.22m, frequency of okperation is about 910Hz), conversion efficiency of thermoelectric is lower, and the danger of liquid metal sodium self also makes people worried.
For under less relatively system architecture size, realize lower resonant frequency, it is the key factor that causes the system architecture size bigger than normal that Chinese invention patent (02104157.1) adopts the length of resonatron in the gas working medium thermoacoustic system based on tradition, proposition is introduced in the gas working medium thermoacoustic system by spring-supported solid piston, form gas-solid two-phase working substance coupled vibrations system, utilize the highdensity mass inertia of solid to replace traditional gas working medium resonatron, and then guarantee relatively low resonant frequency when can be implemented in remarkable reduction resonatron size as phonoreception.Though, solid piston can effectively still keep lower resonant frequency in the reduction resonatron length, but slipper seal between piston and the cylinder and flexible bearing support system all have quite high requirement to structural design, machining and assembling etc.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of gas-liquid two-phase working substance coupled vibrations type thermo-acoustic engine is provided.
A kind of gas-liquid two-phase working substance coupled vibrations type thermo-acoustic engine comprises the capable ripple heat of the loop that connects successively sound nuclear, U-shaped resonatron, liquid piston, resonant cavity, bottom at the U-shaped resonatron is connected with the acoustic impedance regulator through the liquid equilibrium valve, and the capable ripple heat of loop sound nuclear comprises feedback pipe, phonoreception pipe, acoustic capacitance pipe, first water cooler, regenerator, heater, thermal buffer channel and second water cooler that is connected successively.
The working medium of described liquid piston is ionic liquid at room temperature.
The working medium of liquid piston is: TFMS 1-ethyl-3-methylimidazole, tetrafluoro boric acid 1-ethyl-3-methylimidazole, trifluoroacetic acid 1-ethyl-3-methylimidazole.
Described acoustic impedance regulator has the vapor liquid equilibrium jar, in the vapor liquid equilibrium jar, be provided with level meter, the vapor liquid equilibrium tank top is provided with outlet valve and gas charging valve, outlet valve communicates with atmosphere, gas charging valve is connected with steel cylinder, both sides, vapor liquid equilibrium jar top are provided with the first gas-liquid equilibrium valve and the second gas-liquid equilibrium valve, and are connected with two vertical pipeline sections of U-shaped resonatron respectively.
Resonant cavity is the capable ripple heat of a loop sound nuclear, and the capable ripple heat of loop sound nuclear comprises feedback pipe, phonoreception pipe, acoustic capacitance pipe, first water cooler, regenerator, heater, thermal buffer channel and second water cooler that is connected successively.
Another kind of gas-liquid two-phase working substance coupled vibrations type thermo-acoustic engine sound, it is characterized in that it comprises standing wave heat sound nuclear, U-shaped resonatron, liquid piston, the resonant cavity that connects successively, bottom at the U-shaped resonatron is connected with the acoustic impedance regulator through the liquid equilibrium valve, and standing wave heat sound nuclear comprises high temperature acoustic capacitance chamber, heater, regenerator and the water cooler that is connected successively.
The working medium of described liquid piston is ionic liquid at room temperature.The working medium of liquid piston is: TFMS 1-ethyl-3-methylimidazole, tetrafluoro boric acid 1-ethyl-3-methylimidazole, trifluoroacetic acid 1-ethyl-3-methylimidazole.
Described acoustic impedance regulator has the vapor liquid equilibrium jar, in the vapor liquid equilibrium jar, be provided with level meter, the vapor liquid equilibrium tank top is provided with outlet valve and gas charging valve, outlet valve communicates with atmosphere, gas charging valve is connected with steel cylinder, both sides, vapor liquid equilibrium jar top are provided with the first gas-liquid equilibrium valve and the second gas-liquid equilibrium valve, and are connected with two vertical pipeline sections of U-shaped resonatron respectively.
Resonant cavity is a standing wave heat sound nuclear, and standing wave heat sound nuclear comprises high temperature acoustic capacitance chamber, heater, regenerator and the water cooler that is connected successively.
The present invention will have the ionic liquid at room temperature of " zero " vapour tension characteristic and introduce the simple thermoacoustic engine that adopts gas working medium of tradition as liquid piston, make full use of the compressibility acoustic capacitance of gas and the high density mass inertia phonoreception of liquid, form the gas-liquid two-phase working substance coupled vibrations system, by the acoustic impedance regulator, can regulate the quality of the pressure and the liquid piston of gas phase working medium easily, thereby the acoustic impedance characteristic of effective regulating system, realize strengthening the sound oscillation and the conversion of heat sound of thermoacoustic engine, raising sound merit output capability also can realize being lower than the low-frequency operation of 10Hz simultaneously under relative small construction size.And, when " zero " vapour tension characteristic of ionic liquid at room temperature makes itself and the joint work of gas phase working medium, can not guarantee the long-term stability operation of system owing to gas phase working medium is polluted in evaporation.In addition, ionic liquid has excellent conducting performance, and the present invention also lays a good foundation for the thermoacoustic driving magnetohydrodynamic generation technology of development gas-liquid two-phase working substance coupled vibrations.
With respect to the simple gas working medium of tradition, the mechanism that gas-liquid two-phase working substance coupled vibrations is strengthened the thermoacoustic engine sound vibration and reduced resonant frequency can be carried out qualitative interpretation according to the knowledge of resonance circuitry.For series connection RLC (RLC resistance-inductance-capacitance) resonance circuitry, resonant frequency
And resonance potential is proportional to the mould ω L of induction reactance, as seen helps to reduce the system resonance frequency by increasing inductance L, and strengthens resonance potential; Thus,,, make full use of liquid, can strengthen the pressure oscillation in the thermo-acoustic engine system, and reduce resonant frequency because of than the bigger bigger inertia phonoreception of bringing of gaseous mass density by introducing liquid piston according to electro-acoustical analogy.With regard to its essence, the present invention is by improving the acoustic impedance characteristic of thermo-acoustic engine system, and then promotes the performance of thermoacoustic engine.
For the thermo-acoustic engine system of gas-liquid two-phase working substance coupled vibrations of the present invention, the phonoreception of liquid piston is L=m/A
2(m is the quality of liquid piston, and A is the circulation area of U-shaped resonatron), the liquid piston quality increases, and its phonoreception increases thereupon, and is visible by regulating the quality of liquid piston, the phonoreception that just can regulate liquid piston effectively; The acoustic capacitance of gas phase working medium parts such as the capable ripple heat of loop sound nuclear and resonant cavity can have following formula to calculate C=V/ (γ p
m) (V is a volume, and γ is a specific heat ratio, p
mBe average pressure), visible by regulating pressure, the acoustic capacitance of regulating system easily.According to C=V/ (γ p
m), when pressure increased, acoustic capacitance reduced, in conjunction with
And the mould 1/ ω C that the resonant pressure amplitude is proportional to acoustic compliance as can be known, and resonant frequency will increase thereupon, and pressure amplitude also will increase.
In addition, system compares with solid piston, and liquid piston need not the spring support system, avoided the slipper seal problem between solid piston and the cylinder simultaneously, thereby structural design, machining and assembling etc. is all more easy.In addition, by the pressure of acoustic impedance regulator can regulate gas phase working medium of the present invention and the quality of liquid piston, and then can be effectively and the acoustic impedance characteristic of regulating system flexibly and easily.
Description of drawings
Fig. 1 is the structural representation of gas-liquid two-phase working substance coupled vibrations type thermo-acoustic engine;
Fig. 2 is the bilateral driving thermo-acoustic engine system structural representation of the capable ripple heat of gas-liquid two-phase working substance coupled vibrations type double-loop sound nuclear;
Fig. 3 is the monolateral standing wave heat of a gas-liquid two-phase working substance coupled vibrations type sound nuclear heat phonomotor system architecture schematic representation;
Fig. 4 is the bilateral driving thermo-acoustic engine system structural representation of the two standing wave heat of gas-liquid two-phase working substance coupled vibrations type sound nuclear;
Among the figure: feedback pipe 1, phonoreception pipe 2, acoustic capacitance pipe 3, first water cooler 4, regenerator 5, heater 6, thermal buffer channel 7, second water cooler 8, U-shaped resonatron 9, liquid piston 10, resonant cavity 11, outlet valve 12, vapor liquid equilibrium jar 13, level meter 14, the first gas-liquid equilibrium valve 15, liquid equilibrium valve 16, the second gas-liquid equilibrium valve 17, gas charging valve 18, steel cylinder 19.
Embodiment
As shown in Figure 1, gas-liquid two-phase working substance coupled vibrations type thermo-acoustic engine of the present invention comprises the capable ripple heat of the loop that is connected successively sound nuclear, U-shaped resonatron 9, liquid piston 10, resonant cavity 11 and acoustic impedance regulator.The capable ripple heat of loop sound nuclear comprises feedback pipe 1, phonoreception pipe 2, acoustic capacitance pipe 3, first water cooler 4, regenerator 5, heater 6, thermal buffer channel 7 and second water cooler 8 that is connected successively.Described liquid piston 10 places U-shaped resonatron 9 to form liquid piston ionic liquid at room temperature, thereby forms the gas-liquid coupled vibrations with gas phase working medium.Described acoustic impedance regulator, it is characterized in that, its main body is a vapor liquid equilibrium jar 13, its inside is provided with level meter 14, vapor liquid equilibrium jar 13 tops are provided with outlet valve 13 and gas charging valve 18, outlet valve 12 communicates with atmosphere, gas charging valve 18 links to each other with steel cylinder 19, the gas-phase space of vapor liquid equilibrium jar 13 is connected with two vertical pipeline sections of U-shaped resonatron 9 respectively with the second gas-liquid equilibrium valve 17 by the first gas-liquid equilibrium valve 15 that is arranged at its both sides, top, and vapor liquid equilibrium jar 13 bottom liquid phases spaces are connected with U-shaped resonatron 9 bottoms through liquid equilibrium valve 16.
Regulate the operation performance that the inventive method and device are introduced in four aspects from gas-liquid two-phase working substance filling, gas-liquid two-phase working substance coupled vibrations, liquid piston quality adjustment, gas phase sender matter pressure respectively below.
Before system's operation, at first need finish the filling of gas-liquid two-phase working substance.Close at gas charging valve 18, and under the state that outlet valve 12, the first gas-liquid equilibrium valve 15, the second gas-liquid equilibrium valve 17 and liquid equilibrium valve 16 are all opened, utilize vacuum pump to find time by 12 pairs of systems of outlet valve.Finish find time after, all close under the condition at gas charging valve 18, the first gas-liquid equilibrium valve 15, the second gas-liquid equilibrium valve 17 and liquid equilibrium valve 16, by outlet valve 12 ionic liquid at room temperature is injected vapor liquid equilibrium jar 13, enter the amount of liquid of vapor liquid equilibrium jar 13 by level meter 14 monitoring, when reaching predefined value, close outlet valve 12, stop fluid injection.Afterwards, open the first gas-liquid equilibrium valve 15 and the second gas-liquid equilibrium valve 17, make the gas-phase space and the thermo-acoustic engine system pressure equilibrium of vapor liquid equilibrium jar 13.Then, slowly open liquid equilibrium valve 16, liquid phase working fluid enters U-shaped resonatron 9 from vapor liquid equilibrium jar 13 bottoms through the liquid equilibrium valve under the effect of gravity, monitor the liquid phase working fluid amount that enters U-shaped resonatron 9 by the liquid phase working fluid amount in the level meter 14 monitoring vapor liquid equilibrium jars 13 simultaneously, when reaching predefined value, close liquid equilibrium valve 16, stop filling.At this moment, only need open gas charging valve 18 again, gas phase working medium just can enter vapor liquid equilibrium jar 13 through gas charging valve 18 from high-pressure cylinder 19, enter the vertical pipeline section of U-shaped resonatron 9 again through the first gas-liquid equilibrium valve 15 and the second gas-liquid equilibrium valve 17, and then the capable ripple heat of the loop that enters thermoacoustic engine sound nuclear resonant cavity 11, after reaching default pressure, close gas charging valve 18, the first gas-liquid equilibrium valve 15 and the second gas-liquid equilibrium valve 17.So just finished the filling of gas-liquid two-phase working substance.
After finishing the filling of gas-liquid two-phase working substance, open heater 4, first water cooler 6 and second water cooler 8 in the capable ripple heat of the loop sound nuclear, after the temperature gradient along regenerator surpasses certain threshold value, because thermoacoustic effect, regenerator 5 is converted to merit with the part heat, drives gas phase working medium and liquid piston and produces coupled resonance.Adopt the system of gas phase working medium merely compared to tradition, because liquid piston 10 highdensity mass inertia phonoreceptions, the gas-liquid coupled vibrations can be strengthened the sound oscillation in the thermoacoustic engine, and reduces resonant frequency.
By the acoustic impedance characteristic of regulating system, can the regulating system resonant acoustic vibration intensity and change resonant frequency.The adjusting of system's acoustic impedance characteristic can realize that the former can effectively regulate acoustic(al) inertance by the quality of adjusting liquid piston 10 and the pressure of gas phase working medium, and the latter can change the acoustic compliance of system easily.
The quality adjustment of liquid piston 10 comprises to be increased quality and reduces two kinds of situations of quality.The regulating method that increases liquid piston 10 quality has two kinds, the first is at first opened the first gas-liquid equilibrium valve 15 and the second gas-liquid equilibrium valve 17, make the gas-phase space and the thermo-acoustic engine system pressure equilibrium of vapor liquid equilibrium jar 13, open liquid equilibrium valve 16 then, make liquid phase working fluid enter the U-shaped resonatron by action of gravity, thereby increase the quality of liquid piston 10, when reaching predefined value, close liquid equilibrium valve 16, the first gas-liquid equilibrium valve 15 and the second gas-liquid equilibrium valve 17; Second method is, open gas charging valve 18, give 13 superchargings of vapor liquid equilibrium jar by pressurized gas working medium from steel cylinder 19, open liquid equilibrium valve 16 afterwards, because pressure is higher than thermo-acoustic engine system in the vapor liquid equilibrium jar 13, under the driving of pressure reduction, liquid phase working fluid enters U-shaped resonatron 9 from vapor liquid equilibrium jar 13, to increase the quality of liquid piston 10, close liquid equilibrium valve 16 and gas charging valve 18 and can finish to regulate.The implementation methods that reduces liquid piston quality 10 is, at first open outlet valve 12, part gas phase working medium in the discharging vapor liquid equilibrium jar 13, make it lower than the intrasystem pressure of thermoacoustic engine, open liquid equilibrium valve 16 after closing outlet valve 12, because the driving of pressure reduction, the liquid working substance in the U-shaped resonatron 9 is back in the vapor liquid equilibrium jar 13, and then reach the purpose that reduces liquid piston 10 quality, close liquid equilibrium valve 16 and can finish to regulate.
The adjusting of gas phase sender matter pressure comprises boosts and two kinds of situations of step-down.When promoting pressure, only need unlatching gas charging valve 18, the first gas-liquid equilibrium valve 15 and the second gas-liquid equilibrium valve 17 to inflate and get final product; When reducing pressure, then open outlet valve 12, the first gas-liquid equilibrium valve 15 and the second gas-liquid equilibrium valve 17, by reach the purpose of gas phase sender matter pressure in the reduction system to the environment exhaust.
For gas-liquid two-phase working substance coupled vibrations type thermo-acoustic engine of the present invention, gas phase working medium can adopt natural mediums such as helium, nitrogen, argon, carbon dioxide, clean environmental protection.The attribute that should possess as the desirable ionic liquid at room temperature of liquid piston is that under the room temperature condition, viscosity factor is less, chemically stable, compatible, nontoxic etc. with the structural material of gas working medium and thermoacoustic engine.Dioxane imidazole ion liquid 1-ethyl-3-methylimidazole fluoroform sulphonate [EMIM] [OTF] is easy to synthetic and good stability, and the density under the 298K is 1.38 * 10
3Kg/m
3, kinetic viscosity is 43mPa.s, and fusing point is-9 ℃, and pyrolysis temperature is up to 440 ℃, and pyrolysis temperature is following can not measure vapour tension, is a kind of alternative liquid piston material.
In addition, the thermo-acoustic engine system that adopts gas-liquid two-phase working substance coupled vibrations also can have three kinds of improved forms except the structural type shown in the accompanying drawing 1.
Improved form one as shown in Figure 2, compared to structure shown in the accompanying drawing 1, improved form one adopts the capable ripple heat of loop sound nuclear to replace resonant cavity 11, formed the bilateral drive form of the capable ripple heat of double-loop sound nuclear, can increase the driving heat of input and the sound merit amount of generation, and then the sound oscillation in the consolidation system.Described gas-liquid two-phase working substance coupled vibrations type thermo-acoustic engine working medium is tetrafluoro boric acid 1-ethyl-3-methylimidazole.
Improved form two compared to structure shown in the accompanying drawing 1, adopts the standing wave heat sound nuclear of straight line to replace the capable ripple heat of loop sound nuclear structure as shown in Figure 3.Standing wave heat sound nuclear comprises high temperature acoustic capacitance chamber 20, heater 21, regenerator 22 and the water cooler 23 that is connected successively.There is not loop structure in the standing wave of straight line heat sound nuclear, has avoided problems such as temperature compensation that loop structure must solve, loop sound direct current, and manufacturing is easy relatively, and stable and reliable operation.But the heat sound replacement theory thermal efficiency of standing wave heat sound nuclear is lower than capable ripple heat sound nuclear.Described gas-liquid two-phase working substance coupled vibrations type thermo-acoustic engine working medium is trifluoroacetic acid 1-ethyl-3-methylimidazole.
Improved form three is the bilateral drive forms of two standing wave heat sound nuclears as shown in Figure 4, and it is the thermo-acoustic engine system structural type of a kind of gas-liquid two-phase working substance coupled vibrations of comprehensive improved form one and improved form two acquisitions, and its pluses and minuses are not being given unnecessary details.Described gas-liquid two-phase working substance coupled vibrations type thermo-acoustic engine working medium is TFMS 1-ethyl-3-methylimidazole.
Claims (10)
1. gas-liquid two-phase working substance coupled vibrations type thermo-acoustic engine, it is characterized in that it comprises the capable ripple heat of the loop that connects successively sound nuclear, U-shaped resonatron (9), liquid piston (10), resonant cavity (11), bottom at U-shaped resonatron (9) is connected with the acoustic impedance regulator through liquid equilibrium valve (16), and the capable ripple heat of loop sound nuclear comprises feedback pipe (1), phonoreception pipe (2), acoustic capacitance pipe (3), first water cooler (4), regenerator (5), heater (6), thermal buffer channel (7) and second water cooler (8) that is connected successively.
2. a kind of gas-liquid two-phase working substance coupled vibrations type thermo-acoustic engine according to claim 1, the working medium that it is characterized in that described liquid piston (10) is ionic liquid at room temperature.
3. a kind of gas-liquid two-phase working substance coupled vibrations type thermo-acoustic engine according to claim 2 is characterized in that described ionic liquid at room temperature is: TFMS 1-ethyl-3-methylimidazole, tetrafluoro boric acid 1-ethyl-3-methylimidazole, trifluoroacetic acid 1-ethyl-3-methylimidazole.
4. a kind of gas-liquid two-phase working substance coupled vibrations type thermo-acoustic engine according to claim 1, it is characterized in that described acoustic impedance regulator has vapor liquid equilibrium jar (13), in vapor liquid equilibrium jar (13), be provided with level meter (14), vapor liquid equilibrium jar (13) top is provided with outlet valve (12) and gas charging valve (18), outlet valve (12) communicates with atmosphere, gas charging valve (18) is connected with steel cylinder (19), vapor liquid equilibrium jar (13) both sides, top are provided with the first gas-liquid equilibrium valve (15) and the second gas-liquid equilibrium valve (17), and are connected with two vertical pipeline sections of U-shaped resonatron (9) respectively.
5. a kind of gas-liquid two-phase working substance coupled vibrations type thermo-acoustic engine according to claim 1, it is characterized in that described resonant cavity (11) adopts the capable ripple heat of loop sound nuclear, the capable ripple heat of loop sound nuclear comprises feedback pipe (1), phonoreception pipe (2), acoustic capacitance pipe (3), first water cooler (4), regenerator (5), heater (6), thermal buffer channel (7) and second water cooler (8) that is connected successively.
6. gas-liquid two-phase working substance coupled vibrations type thermo-acoustic engine, it is characterized in that it comprises standing wave heat sound nuclear, U-shaped resonatron (9), liquid piston (10), the resonant cavity (11) that connects successively, bottom at U-shaped resonatron (9) is connected with the acoustic impedance regulator through liquid equilibrium valve (16), and standing wave heat sound nuclear comprises high temperature acoustic capacitance chamber (20), heater (21), regenerator (22) and the water cooler (23) that is connected successively.
7. a kind of gas-liquid two-phase working substance coupled vibrations type thermo-acoustic engine according to claim 6, the working medium that it is characterized in that described liquid piston (10) is ionic liquid at room temperature.
8. a kind of gas-liquid two-phase working substance coupled vibrations type thermo-acoustic engine according to claim 7 is characterized in that described ionic liquid at room temperature is: TFMS 1-ethyl-3-methylimidazole, tetrafluoro boric acid 1-ethyl-3-methylimidazole, trifluoroacetic acid 1-ethyl-3-methylimidazole.
9. a kind of gas-liquid two-phase working substance coupled vibrations type thermo-acoustic engine according to claim 6, it is characterized in that described acoustic impedance regulator has vapor liquid equilibrium jar (13), in vapor liquid equilibrium jar (13), be provided with level meter (14), vapor liquid equilibrium jar (13) top is provided with outlet valve (12) and gas charging valve (18), outlet valve (12) communicates with atmosphere, gas charging valve (18) is connected with steel cylinder (19), vapor liquid equilibrium jar (13) both sides, top are provided with the first gas-liquid equilibrium valve (15) and the second gas-liquid equilibrium valve (17), and are connected with two vertical pipeline sections of U-shaped resonatron (9) respectively.
10. a kind of gas-liquid two-phase working substance coupled vibrations type thermo-acoustic engine according to claim 6, it is characterized in that described resonant cavity (11) adopts standing wave heat sound nuclear, standing wave heat sound nuclear comprises high temperature acoustic capacitance chamber (20), heater (21), regenerator (22) and the water cooler (23) that is connected successively.
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101619714B (en) * | 2009-08-14 | 2011-01-05 | 深圳市中科力函热声技术工程研究中心有限公司 | Biomass thermal noise generating system |
| CN102748255B (en) * | 2011-04-21 | 2014-05-21 | 中科力函(深圳)热声技术有限公司 | Multi-cylinder thermomagnetic thermoacoustic power generation system |
| CN102734099B (en) * | 2012-06-25 | 2016-08-31 | 浙江大学 | The standing wave type gas-liquid phase transition thermoacoustic engine that low-grade heat source drives |
| CN103321775B (en) * | 2013-06-20 | 2016-02-17 | 博尔塔拉蒙古自治州万力源科技开发有限责任公司 | Liquid piston heat engine and there is the boiler of this liquid piston heat engine |
| CN105865080B (en) * | 2016-05-24 | 2019-04-02 | 浙江大学 | The low grade heat energy converter of Thermoacoustic engine |
| CN106602926B (en) * | 2016-12-09 | 2018-09-14 | 中国科学院理化技术研究所 | A kind of thermoacoustic generator using liquid metal conduction |
| CN106706063B (en) * | 2017-01-14 | 2019-02-01 | 西安科技大学 | A kind of liquid volume measurement system and method |
| CN109458315A (en) * | 2018-12-26 | 2019-03-12 | 浙江大学 | With the enclosed traveling wave thermoacoustic prime mover of gas-liquid phase transition |
| CN114688758B (en) * | 2020-12-29 | 2024-03-15 | 中国科学院理化技术研究所 | Thermoacoustic refrigerating system utilizing low-grade heat energy |
| CN114688759B (en) * | 2020-12-29 | 2024-03-15 | 中国科学院理化技术研究所 | Gas-liquid thermo-acoustic conversion system |
| CN114687882A (en) * | 2020-12-29 | 2022-07-01 | 中国科学院理化技术研究所 | Efficient loop type gas-liquid coupling thermoacoustic system |
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