CN100357676C - Corrugated pipe connecting device of conpled heat sound motor and pulse pipe refrigerator - Google Patents
Corrugated pipe connecting device of conpled heat sound motor and pulse pipe refrigerator Download PDFInfo
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- CN100357676C CN100357676C CNB200610049130XA CN200610049130A CN100357676C CN 100357676 C CN100357676 C CN 100357676C CN B200610049130X A CNB200610049130X A CN B200610049130XA CN 200610049130 A CN200610049130 A CN 200610049130A CN 100357676 C CN100357676 C CN 100357676C
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- 230000002792 vascular Effects 0.000 claims description 36
- 230000005540 biological transmission Effects 0.000 abstract description 7
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- 238000000034 method Methods 0.000 description 12
- 238000005057 refrigeration Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 9
- 230000008878 coupling Effects 0.000 description 8
- 238000010168 coupling process Methods 0.000 description 8
- 238000005859 coupling reaction Methods 0.000 description 8
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- 238000010438 heat treatment Methods 0.000 description 6
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
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- 229910052734 helium Inorganic materials 0.000 description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 3
- 230000002427 irreversible effect Effects 0.000 description 3
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
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- 230000009347 mechanical transmission Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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- 238000003466 welding Methods 0.000 description 1
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Abstract
The present invention discloses a corrugated pipe connecting device of a coupled heat sound engine and a pulse pipe refrigerator, which is provided with a sound power transmission device and a seal cover, wherein a lower flange is arranged on the sound power transmission device. A corrugated pipe, a seal plate of the corrugated pipe are arranged on the lower flange, the seal cover is provided with an upper flange, and a seal sleeve is arranged on the upper flange. The seal sleeve is provided with a straight pipe section and a reducing transition pipe connected with the pulse pipe refrigerator, and the upper and the lower flanges are connected through bolts or weld. Since the corrugated pipe is a flexible component, the corrugated pipe can transmit sound power in an elastic limit with high efficiency. When one end of the corrugated pipe is sealed, mass transfer of both sides can also be blocked. Therefore, if the connecting device is used for the connection between the heat sound engine and the pulse pipe refrigerator, the present invention can realize the purpose that the heat sound engine and the pulse pipe refrigerator can respectively use different working substances. Simultaneously, the sound power of the heat sound engine can also be transmitted to the pulse pipe refrigerator with high efficiency.
Description
Technical field
The present invention relates to a kind of corrugated pipe connecting device of be coupled thermoacoustic engine and vascular refrigerator, it is applicable to the coupling that is connected between thermoacoustic engine and the various types refrigeration machine.
Background technology
Thermoacoustic engine utilizes thermoacoustic effect that thermal power transfer is the sound merit, has eliminated the moving component under high temperature and the normal temperature, have simple in structure, reliable, directly be outstanding advantages such as power, the working medium feature of environmental protection are good with heat energy; Vascular refrigerator has been eliminated the low temperature movement parts, also has simple in structure, reliable and advantage such as the working medium feature of environmental protection is good.Therefore the two demonstrates huge application potential in conjunction with just constituting the thermoacoustic refrigeration system that does not have moving component fully at aspects such as natural gas liquefaction, electronic device cooling and nearly room temperature refrigeration.
Thermoacoustic effect is the phenomenon of changing mutually between heat and the sound, i.e. time equal thermomechanical effect in the sound field.The hot machine of heat sound is a kind of device by mutual conversion or transmission between thermoacoustic effect realization heat energy and the acoustic energy in essence.The hot machine of heat sound does not need outside mechanical means just can make between the speed of oscillating fluid and the pressure to set up rational phase relation, therefore, do not need mechanical transmission component, simplified the structure of system greatly.By the difference of power conversion direction, thermoacoustic effect can be divided into two classes: the one, produce sound with heat, the sound oscillation that instant heating drives; The 2nd, produce heat with sound, promptly sound-driving heat transmission.As long as possess certain condition, thermoacoustic effect is expert at and can both be taken place in the sound field of wave sound field, standing-wave sound field and both combinations.
According to the sound field characteristic difference, thermoacoustic engine mainly is divided into three kinds of patterns of the capable ripple mixed type of standing wave type, travelling-wave type and standing wave.Row wave sound field medium velocity ripple is identical with the pressure oscillation phase place, and the two differs 90 ° in standing-wave sound field.Because the phase difference between stationary field medium velocity and the pressure is 90 °, when the folded place of plate gas velocity is in the forward maximum, gas moves to the hot junction limit in the folded passage high speed of plate, skim over the most displacements (promptly skimming over most thermograde) in the motion of forward half period, therefore, this process should be to heat the strongest time period.But when this moment, also pressure changed maximum just, gas was compressed rapidly in this period, compression process and heating process take place simultaneously, from thermodynamic (al) angle see both be unfavorable for the compression also be unfavorable for the heating, therefore cause the hysteresis of conducting heat between gas and the solid, this thermo-lag makes has had the suitable temperature difference between the gas and solid dielectric when gas motion slows down the absorption heat, thereby causes very big irreversible loss.But we also should see, if there is not thermo-lag, standing-wave sound field in theory can not generation sound merit, and it is that cost produces merit to reduce thermodynamic efficiency; In like manner, when the gas experiences expansion process, but experience gas simultaneously at a high speed to the cooling procedure of low-temperature end motion, such process both had been unfavorable for expanding and also had been unfavorable for heat release.Can see from top process analysis procedure analysis: just must adopt the bigger plate of spacing folded to form thermo-lag in order to realize that stationary field hot merit transforms, part heating is occurred in after the compression process, part cooling occurs in after the expansion process, yet gas reduces the efficient of whole device with the irreversible thermal procession that the limited temperature difference heat transmission between solid causes greatly.
The void size of regenerator matrix has realized the desirable thermo-contact between solid and gas much smaller than the gas heat penetration in the traveling wave thermoacoustic engine, and heating and cooling are approximately reversible constant temperature process.Simultaneously, go wave sound field medium velocity and pressure same-phase.At traveling wave thermoacoustic engine regenerator place, when gas is compressed rapidly, gas motion speed is very little, strides across temperature increment less on the regenerator, therefore can be compressed efficiently, and in heating process, gas has maximum forward direction speed, strides across maximum temperature increase interval, and this moment, pressure changed very little, therefore can realize the expansion process of absorbing heat efficiently, this is undoubtedly highly beneficial to the conversion of sound merit to heat energy from the thermodynamics angle; In like manner, after gas enters the pressure reduction stage, gas motion speed is less, skim over the less temperature range of thermal acoustic regenerator, the reduction of the pressure that is beneficial to, speed becomes big when gas pressure drops to a certain degree, and variations in temperature is rapid, gas is to the regenerator heat release, and gas experiences the heat release again of expanding earlier.Heat sound transfer process in the as seen from the above analysis capable wave sound field is carried out naturally, there is not the participation of irreversible procedure, and very little regenerator water conservancy radius can guarantee the isothermal heat transfer of gas and regenerator, therefore, but what traveling wave thermoacoustic engine carried out in theory is backheating sound transfer process, can obtain the thermodynamic efficiency higher than standing wave thermoacoustic engine.
Vascular refrigerator generally is made of regenerator, vascular, cold and hot end heat exchanger, air deflector and phase modulating mechanism etc.According to plenum system, can be divided into stirling-type and G-M type, the former adopts valveless to connect between compressor and refrigeration machine, and the high-low pressure transfer valve is arranged between the latter's compressor and the refrigeration machine.According to the arrangement of regenerator and vascular, vascular refrigerator can be divided into linear pattern, U type and coaxial type again.In addition, in order to obtain lower cryogenic temperature, the multi-stage refrigerating machine has appearred also.At present, the sound-driving vascular refrigerator of heat adopts single-stage pulse tube refrigerator more, has begun at present to occur with the sound-driving multistage vascular refrigerator of heat.Because the refrigerating capacity of vascular refrigerator is directly related with the sound merit size by vascular, and sound merit size depends on the intensity and the phase place of pressure oscillation and velocity perturbation, so phase modulating mechanism is most important for vascular refrigerator.
From present present Research, the pulse pipe refrigeration machine system performance that thermoacoustic engine drives will improve, and must optimize the coupling between engine and the refrigeration machine, need do the work of two aspects.Aspect thermoacoustic engine, at first to make engine have the pressure stable vibration, promptly single-frequency and frequency stability will be got well; The driving force of its less important raising engine, pressure ratio be as the leading indicator of engine evaluated driving force, is the rely power of work of vascular refrigerator, make vascular refrigerator obtain low cryogenic temperature and big refrigeration work consumption just requires engine that high output pressure ratio is arranged.For vascular refrigerator, the greatest problem of docking with engine is a frequency match.Vascular refrigerator is divided into two classes, and a class is a G-M type vascular refrigerator, is generally operational in below the 2Hz; Another kind of is the stirling-type vascular refrigerator, and its frequency range is generally 15～60Hz.And adopt helium is that the thermoacoustic engine operating frequency of working medium is generally more than 70Hz, so the frequency match between the two is the problem that needs solve.At last, for thermoacoustic engine and vascular refrigerator, also there is a working medium coupling, some working medium as nitrogen and argon gas, are good compressor working medium, be used for thermoacoustic engine and can obtain higher pressure ratio, but transport property is undesirable, be unfavorable for the work of Cryo Refrigerator, other working medium, as helium, the control transfer of heat characteristic is good, has very low boiling point simultaneously again, so be good cryogenic refrigeration working medium, be difficult for obtaining high pressure ratio in the thermoacoustic engine but be used in.If can adopt working medium such as nitrogen at thermoacoustic engine, adopting helium in refrigeration machine is working medium, and the two is connected by attaching parts, so just can utilize the advantage of two kinds of working medium simultaneously, and eliminate its unfavorable aspect.
Summary of the invention
The corrugated pipe connecting device that the purpose of this invention is to provide a kind of be coupled thermoacoustic engine and vascular refrigerator.
It has merit transmitting device, seal closure, and sound merit transmitting device is provided with lower flange, is provided with bellows, sylphon seal plate on lower flange.Seal closure has upper flange, is provided with Sealed casing pipe on upper flange.Sealed casing pipe has straight length and the reducing transition conduit that is connected with vascular refrigerator.Upper and lower flange connects by bolt or directly is welded to connect.
The present invention to satisfy requirement of engineering, proposes a kind of novel corrugated pipe connecting device for optimizing the working medium coupling between thermoacoustic engine and the vascular refrigerator.Because bellows is compliant member, thus can high efficiency of transmission sound merit in its elastic limit, after the sealing of one end, can cut off the mass exchange of both sides again.Therefore, if this jockey is used for connection between thermoacoustic engine and the vascular refrigerator, then can be implemented in the purpose that thermoacoustic engine and vascular refrigerator adopt different working medium respectively, simultaneously, the sound merit of thermoacoustic engine can also be passed to vascular refrigerator efficiently.
Description of drawings
Accompanying drawing is the corrugated pipe connecting device structural representation of coupling thermoacoustic engine and vascular refrigerator.
The specific embodiment
At first will select suitable bellows, material, length and scalability can both satisfy the sound merit transmission requirement in the thermoacoustic engine.
As shown in drawings, the corrugated pipe connecting device of coupling thermoacoustic engine and vascular refrigerator has merit transmitting device, seal closure, sound merit transmitting device is provided with lower flange 3, on lower flange, be provided with bellows 2, sylphon seal plate 1, seal closure has upper flange 4, is provided with Sealed casing pipe 5 on upper flange.Sealed casing pipe 5 has straight length and the reducing transition conduit that is connected with vascular refrigerator.Upper and lower flange is by bolt or directly be welded to connect.
When making, at first an end of bellows 2 is sealed with sealing plate 1, can stick with glue, also can adopt welding manner; Then, the other end of bellows 2 is welded on the lower flange 3, leaves the opening that docks with the thermoacoustic engine output on the axis direction of lower flange 3, directly be connected with thermoacoustic engine; Sealed casing pipe 5 comprises straight-run of pipe and one section reducing transition conduit, and by being welded to connect, another openend of reducing transition conduit is connected with vascular refrigerator, and Sealed casing pipe and upper flange weld together.At last, last lower flange according to direction shown in the accompanying drawing by bolt or weld fixedly connected, between adopt O type circle or metal sealing.Bellows 2 moves in seal closure in the work, and the sound merit of engine is transferred to vascular refrigerator.
After completing, just can be connected on corrugated pipe connecting device between vascular refrigerator and the thermoacoustic engine, shown in the port respective figure.During work, the gas working medium of thermoacoustic engine side drives bellows 2 motions, sylphon seal plate 1 is as the piston working medium of pulse tube refrigeration pusher side is compressed and expanded acting, promptly the sound merit is passed to vascular refrigerator from thermoacoustic engine, simultaneously because the iris action of sealing plate 1, working medium between thermoacoustic engine and the vascular refrigerator is independent mutually, the independent operating between having guaranteed separately.Thereby realize that thermoacoustic engine drives the working medium coupling in the pulse tube cooling system.
Claims (2)
1. corrugated pipe connecting device of thermoacoustic engine and vascular refrigerator that is coupled, it is characterized in that, it has merit transmitting device, seal closure, sound merit transmitting device is provided with lower flange (3), the front end that is provided with bellows (2), bellows (2) at the front end of lower flange is provided with sylphon seal plate (1), seal closure has upper flange (4), is provided with Sealed casing pipe (5) at the front end of upper flange, and upper flange (4) and lower flange (3) are by bolt or be welded to connect.
2. the corrugated pipe connecting device of a kind of be coupled thermoacoustic engine and vascular refrigerator according to claim 1 is characterized in that, described Sealed casing pipe (5) has straight length and the reducing transition conduit that is connected with vascular refrigerator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610049130XA CN100357676C (en) | 2006-01-17 | 2006-01-17 | Corrugated pipe connecting device of conpled heat sound motor and pulse pipe refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610049130XA CN100357676C (en) | 2006-01-17 | 2006-01-17 | Corrugated pipe connecting device of conpled heat sound motor and pulse pipe refrigerator |
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| Publication Number | Publication Date |
|---|---|
| CN1793757A CN1793757A (en) | 2006-06-28 |
| CN100357676C true CN100357676C (en) | 2007-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB200610049130XA Expired - Fee Related CN100357676C (en) | 2006-01-17 | 2006-01-17 | Corrugated pipe connecting device of conpled heat sound motor and pulse pipe refrigerator |
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| Country | Link |
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| CN (1) | CN100357676C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100565039C (en) * | 2007-04-03 | 2009-12-02 | 中国科学院理化技术研究所 | Coupling device for thermoacoustic engine and refrigerator driven by thermoacoustic engine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4321799A (en) * | 1980-03-28 | 1982-03-30 | Georgia Tech Research Institute | Method for utilizing gas-solid dispersions in thermodynamic cycles for power generation and refrigeration |
| CN1673649A (en) * | 2005-04-14 | 2005-09-28 | 中国科学院理化技术研究所 | Thermoacoustic driving pulse tube refrigerator |
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2006
- 2006-01-17 CN CNB200610049130XA patent/CN100357676C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4321799A (en) * | 1980-03-28 | 1982-03-30 | Georgia Tech Research Institute | Method for utilizing gas-solid dispersions in thermodynamic cycles for power generation and refrigeration |
| CN1673649A (en) * | 2005-04-14 | 2005-09-28 | 中国科学院理化技术研究所 | Thermoacoustic driving pulse tube refrigerator |
Non-Patent Citations (1)
| Title |
|---|
| 新型热声发动机驱动的脉管制冷机实验研究 孙大明，邱利民，谭永翔，严伟林，陈萍，陈国邦.浙江大学学报，第39卷第3期 2005 * |
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| CN1793757A (en) | 2006-06-28 |
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Granted publication date: 20071226 Termination date: 20110117 |