CN105333694A - Multistage gas liquefaction plant driven by loop multistage thermoacoustic engine - Google Patents
Multistage gas liquefaction plant driven by loop multistage thermoacoustic engine Download PDFInfo
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- CN105333694A CN105333694A CN201510792247.6A CN201510792247A CN105333694A CN 105333694 A CN105333694 A CN 105333694A CN 201510792247 A CN201510792247 A CN 201510792247A CN 105333694 A CN105333694 A CN 105333694A
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- 238000005057 refrigeration Methods 0.000 claims abstract description 157
- 239000007789 gas Substances 0.000 claims description 90
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 61
- 230000002792 vascular Effects 0.000 claims description 40
- 239000000945 filler Substances 0.000 claims description 21
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 239000003345 natural gas Substances 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 7
- 239000000498 cooling water Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 6
- 238000005243 fluidization Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 230000000644 propagated effect Effects 0.000 claims description 6
- 238000010791 quenching Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 230000007306 turnover Effects 0.000 claims description 5
- 239000001307 helium Substances 0.000 claims description 4
- 229910052734 helium Inorganic materials 0.000 claims description 4
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical group [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 150000002431 hydrogen Chemical class 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 230000007423 decrease Effects 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 230000002427 irreversible effect Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 230000010355 oscillation Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
- F25J1/0225—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using other external refrigeration means not provided before, e.g. heat driven absorption chillers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
- F25J1/0203—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using a single-component refrigerant [SCR] fluid in a closed vapor compression cycle
- F25J1/0208—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using a single-component refrigerant [SCR] fluid in a closed vapor compression cycle in combination with an internal quasi-closed refrigeration loop, e.g. with deep flash recycle loop
- F25J1/0209—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using a single-component refrigerant [SCR] fluid in a closed vapor compression cycle in combination with an internal quasi-closed refrigeration loop, e.g. with deep flash recycle loop as at least a three level refrigeration cascade
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/14—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the cycle used, e.g. Stirling cycle
- F25B9/145—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the cycle used, e.g. Stirling cycle pulse-tube cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
- F25J1/0005—Light or noble gases
- F25J1/001—Hydrogen
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
- F25J1/0012—Primary atmospheric gases, e.g. air
- F25J1/0015—Nitrogen
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
- F25J1/0022—Hydrocarbons, e.g. natural gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/14—Compression machines, plants or systems characterised by the cycle used
- F25B2309/1407—Pulse-tube cycles with pulse tube having in-line geometrical arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/14—Compression machines, plants or systems characterised by the cycle used
- F25B2309/1425—Pulse tubes with basic schematic including several pulse tubes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/14—Compression machines, plants or systems characterised by the cycle used
- F25B2309/1426—Pulse tubes with basic schematic including at the pulse tube warm end a so called warm end expander
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2270/00—Refrigeration techniques used
- F25J2270/90—External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration
- F25J2270/908—External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration by regenerative chillers, i.e. oscillating or dynamic systems, e.g. Stirling refrigerator, thermoelectric ("Peltier") or magnetic refrigeration
- F25J2270/91—External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration by regenerative chillers, i.e. oscillating or dynamic systems, e.g. Stirling refrigerator, thermoelectric ("Peltier") or magnetic refrigeration using pulse tube refrigeration
Abstract
The invention discloses a multistage gas liquefaction plant driven by a loop multistage thermoacoustic engine. The multistage gas liquefaction plant comprises M thermoacoustic engine units and pulse tube refrigerating machine units, wherein the pulse tube refrigerating machine units are connected with the outlets of the thermoacoustic engine units in a by-pass manner; M is a positive integer ranging from 3 to 6; a refrigerating unit comprises a refrigerating machine regenerator and a low-temperature end heat exchanger; each pulse tube refrigerating machine unit comprises two or more refrigerating units; multiple by-pass pipelines are arranged between each refrigerating machine regenerator and a corresponding pulse tube, so that the refrigerating machine regenerator and the corresponding pulse tube are connected to form at least one by-pass airflow passage; acoustic power generated through self-excitation of the thermoacoustic engine has thermoacoustic conversion in the refrigerating machine regenerators; the multiple low-temperature end heat exchangers are maintained under different refrigerating temperatures; and the to-be-liquefied gas sequentially passes through all low-temperature end heat exchangers to be liquefied in a temperature stepped decrease manner. The multistage gas liquefaction plant has no moving part, and is compact in structure and high in power density; the loop structure enables the engine units to be in the traveling wave phase; the multipath bypass structure realizes gas expansion refrigeration to improve the efficiency of a pulse tube refrigerating machine; and in addition, the multistage refrigerating units reduce the gas temperature in a stepped manner to effectively reduce the irreversible heat transfer loss.
Description
Technical field
The invention belongs to the gas liquefaction equipment in gas liquefaction field, the multistage liquefying plant of gas of particularly a kind of loop Multi-stage heat phonomotor driving.
Background technology
Liquefaction process refers to that material changes liquid process into by gaseous state.Because volume after gas liquefaction can become original several one thousandths, be convenient to storage and transport, in reality, usually liquefaction process carried out to some gases.Realize liquefaction and have two kinds of means, one is reduce temperature, and two is compression volumes.Any gas can liquefy when temperature drops to enough low.Therefore, how to manufacture that reliability is high, the life-span be long, efficient and the Cryo Refrigerator of step liquid gas can become the problem attracted people's attention.
Thermoacoustic engine is that a kind of pipeline and heat exchanger of utilizing obtains suitable sound field therein, and by the interaction between working media and regenerator solid packing, external heat is converted into the device of acoustic energy, there is mechanical moving component, reliability is high, the life-span is long and potential thermal efficiency advantages of higher, get more and more people's extensive concerning.In the Cryo Refrigerator of current extensive use, pulse tube refrigerating machine is that the air-flow utilizing pressure cycle to change vibrates and carried out process of refrigerastion in the pipe of a low heat conductivity, it eliminate the need the moving component of low-temperature end, therefore have structure simple, vibrate little, high reliability.The sound merit that self-oscillation in thermoacoustic engine produces is driven vascular refrigerator, just a kind of refrigeration machine all without any moving component from drive source to cold junction is created, have that reliability is high, life-span long and potential thermal efficiency advantages of higher, get more and more people's extensive concerning.In recent years, acoustic resonance type thermoacoustic refrigeration system, because having compact conformation, high, the potential thermal efficiency advantages of higher of power density, attracted wide attention, and had promoted the development of thermal drivers vascular refrigerator further.
Fig. 1 is the refrigerator with multi-channel shunt pulse pipes that patent CN1035788 proposes.It is made up of the refrigeration owner water cooler 2 be connected successively, refrigeration machine regenerator 3, low-temperature end heat exchanger 4, tube connector 5, pulse tube 7, refrigeration machine time water cooler 10, inertia tube 11 and air reservoir 12, is driven by pressure wave generator.In the appropriate position of refrigeration machine regenerator and pulse tube middle part, by multi-channel shunt pipeline 13, both are connected, in every grade of refrigeration machine regenerator, form at least one bypass flow path; Meanwhile, resistance filler is suitably set at pulse tube, gas uniform can be made, pass through smoothly.This pulse tube refrigerating machine can obtain larger refrigeration work consumption and lower cryogenic temperature, thus improves refrigerating efficiency.
Fig. 2 is the acoustic resonance type thermoacoustic refrigeration system that the people such as Luo Ercang propose.This system forms primarily of multiple thermoacoustic engine unit 14 and vascular refrigerator unit 1, and each pulse tube cooler unit only has one-level low-temperature end heat exchanger.Every one-level thermoacoustic engine unit to be joined end to end formation loop structure by resonatron 23.This system architecture is compact, can realize acoustic power recovery in resonatron, and the potential thermal efficiency is high, and can need according to cold the thermoacoustic engine unit and the vascular refrigerator unit that seal in any amount.System can be applied to the decline of liquid gas flow process, namely absorbs the latent heat of gas under condensing temperature, makes gas become liquid state from gaseous state.But if utilize this system to complete gas at normal temperature to be liquefied to the overall liquefaction process of cryogenic liquid, then can produce very large heat transfer loss owing to cannot realize the cooling of gas step, efficiency is very low.
In order to solve above Problems existing, the present invention proposes the multistage liquefying plant of gas that a kind of loop Multi-stage heat phonomotor that can realize gas liquefaction integration drives; It does not have moving component completely, safe and reliable, and engine core parts are all in traveling-wave phase; There is the low-temperature end heat exchanger of multiple different temperatures, gas temperature can be reduced in step ground, effectively reduce heat transfer loss; Utilize multi-channel shunt structure, make pressure oscillation in pulse tube become large, the phase place of pressure wave and volume flow rate, closer to homophase, can obtain larger refrigeration work consumption and lower cryogenic temperature; System architecture is simple, and moving component is less, safe and reliable.
Summary of the invention
The object of the present invention is to provide the multistage liquefying plant of gas that a kind of loop Multi-stage heat phonomotor drives, its movement-less part, reliability is high, and structure is simple, and thermoacoustic engine cell operation is at traveling-wave phase, and operating efficiency is high; The temperature of multiple low-temperature end heat exchanger is reduced to gas liquefaction temperature successively from room temperature, can reduce the temperature of gas by step, effectively reduce heat transfer loss; Multi-channel shunt structure can make pulse tube bypass point become refrigeration position, and form swell refrigeration process in pipe, therefore refrigeration machine has more excellent refrigeration performance; Arrange resistance filler at pulse tube bypass point place, reduce the losses by mixture that air turbulence is brought; This device can realize the overall flow of gas liquefaction, has wide development and application prospect in gas liquefaction.
Technical scheme of the present invention is as follows:
The multistage liquefying plant of gas that loop Multi-stage heat phonomotor provided by the invention drives, it consists of the join end to end loop structure that forms and M vascular refrigerator unit 1 of resonatron 23 M thermoacoustic engine unit 14, M=3 ~ 6 positive integer; Described thermoacoustic engine unit 14 is made up of the direct current suppressor 15 be connected successively, engine primary cooler 16, engine regenerator 17, heater 18, temperature end laminarization element 19, thermal buffer tube 20, engine room temperature end layer fluidisation element 21 and engine time cooler 22; Engine time cooler 22 exit of each thermoacoustic engine unit 14 is other connects a vascular refrigerator unit 1;
Described vascular refrigerator unit 1 is made up of to N level refrigeration unit, tube connector 5, pulse tube 7, refrigeration machine time water cooler 10, inertia tube 11 and air reservoir 12 the refrigeration owner water cooler 2, first be connected successively, the wherein positive integer of N=2 ~ 6; Described refrigeration unit is made up of a refrigeration machine regenerator 3 and a low-temperature end heat exchanger 4 being connected in series with it; The refrigeration machine regenerator 3 of the 1st grade of refrigeration unit is connected with refrigeration owner water cooler 2, and the low-temperature end heat exchanger 4 of N level refrigeration unit is connected with pulse tube 7 cold junction by tube connector 5; Pulse tube 7 two ends are equipped with low-temperature end water conservancy diversion silk screen 6 and refrigeration machine indoor temperature end water conservancy diversion silk screen 9 respectively;
In each vascular refrigerator unit 1, the refrigeration machine regenerator 3 of refrigeration unit is connected to form at least one bypass flow passage by bypass line 13 and pulse tube 7; Pulse tube 7 is built with resistance filler 8, and resistance filler 8 is axially laminated in the interface both sides of gas working medium turnover pulse tube 7, and described resistance filler 8 is silk screen or porous media material;
The heater 18 of each thermoacoustic engine unit 14 is connected with thermal source to absorb the temperature end that heat from heat source forms identical temperature; Engine primary cooler 16 and engine time cooler 22 all cool to maintain room temperature range by water cooler; Therefore, formation temperature gradient on the engine regenerator 17 of every one-level thermoacoustic engine unit 14; Under this thermograde, between engine regenerator 17 interior working gas and the solid packing in it, produce thermoacoustic effect, will the converting heat Cheng Shenggong of heater 18 be input to; Sound merit is propagated along the positive direction of thermograde and amplifies, and a part of sound merit is delivered in vascular refrigerator unit 1, and another part is delivered in next stage thermoacoustic engine unit by resonatron 23 and repeats above process; In vascular refrigerator unit 1, refrigeration owner water cooler 2 and refrigeration machine time water cooler 10 maintain room temperature range by water quench; In N level refrigeration unit, the sound merit produced from thermoacoustic engine is delivered in refrigeration machine regenerator 3 and Sonic heat changing occurs, be pumped in the low-temperature end heat exchanger of N-1 level by the heat of N grade low-temp end heat exchanger 4, N grade low-temp end heat exchanger 4 keeps low temperature; As mentioned above, be delivered to sound merit in N-1 level refrigeration unit through Sonic heat changing, be pumped in the low-temperature end heat exchanger of N-2 level by the heat of N-1 grade low-temp end heat exchanger, N-1 grade low-temp end heat exchanger keeps low temperature; Finally, the heat of all low-temperature end heat exchangers is all pumped in refrigeration owner water cooler 2, and heat is taken away by cooling water, and the cryogenic temperature of N grade low-temp end heat exchanger is reduced to gas liquefaction temperature successively; Gas to be liquefied passes through the low-temperature end heat exchanger of each refrigeration unit successively according to cryogenic temperature order from high to low, and gas heat is absorbed, and temperature step reduces, and final gas is liquefied; Wherein, swell refrigeration is formed by being bypassed to a part of gas in pulse tube 7 from every grade of refrigeration machine regenerator 3.
In said apparatus, the pulse tube 7 of vascular refrigerator unit 1 is arranged with refrigeration machine regenerator 3 non-coaxial of refrigeration unit.
The multistage liquefying plant of gas that loop Multi-stage heat phonomotor of the present invention drives, it consists of the join end to end loop structure that forms and M vascular refrigerator unit 1 of resonatron 23 M thermoacoustic engine unit 14, M=3 ~ 6 positive integer; Described thermoacoustic engine unit 14 is made up of the direct current suppressor 15 be connected successively, engine primary cooler 16, engine regenerator 17, heater 18, temperature end laminarization element 19, thermal buffer tube 20, engine room temperature end layer fluidisation element 21 and engine time cooler 22; Engine time cooler 22 exit of each thermoacoustic engine unit 14 is other connects a vascular refrigerator unit 1;
Described vascular refrigerator unit 1 is by refrigeration owner water cooler 2, the first order be connected with refrigeration owner water cooler 2 is to N level refrigeration unit, be positioned at the described first order to N level refrigeration unit refrigeration machine regenerator 3 within pulse tube 7, refrigeration machine time water cooler 10, inertia tube 11 and air reservoir 12 form, the wherein positive integer of N=2 ~ 6; Described refrigeration unit is made up of a refrigeration machine regenerator 3 and a low-temperature end heat exchanger 4 being connected in series with it; The refrigeration machine regenerator 3 of the 1st grade of refrigeration unit and pulse tube 7 indoor temperature end are connected with refrigeration owner water cooler 2, and the low-temperature end heat exchanger 4 of N level refrigeration unit is connected with pulse tube 7 cold junction; Pulse tube 7 two ends are equipped with low-temperature end water conservancy diversion silk screen 6 and refrigeration machine indoor temperature end water conservancy diversion silk screen 9 respectively;
In each vascular refrigerator unit 1, the refrigeration machine regenerator 3 of refrigeration unit is connected by multiple through hole that both common walls are opened or the porous media wall directly made with pulse tube 7; Pulse tube 7 is built with resistance filler 8, and resistance filler 8 is axially laminated in the interface both sides of gas working medium turnover pulse tube 7, and described resistance filler 8 is silk screen or porous media material;
The heater 18 of each thermoacoustic engine unit 14 is connected with thermal source to absorb the temperature end that heat from heat source forms identical temperature; Engine primary cooler 16 and engine time cooler 22 all cool to maintain room temperature range by water cooler; Therefore, formation temperature gradient on the engine regenerator 17 of every one-level thermoacoustic engine unit 14; Under this thermograde, between engine regenerator 17 interior working gas and the solid packing in it, produce thermoacoustic effect, will the converting heat Cheng Shenggong of heater 18 be input to; Sound merit is propagated along the positive direction of thermograde and amplifies, and a part of sound merit is delivered in vascular refrigerator unit 1, and another part is delivered in next stage thermoacoustic engine unit by resonatron 23 and repeats above process; In vascular refrigerator unit 1, refrigeration owner water cooler 2 and refrigeration machine time water cooler 10 maintain room temperature range by water quench; In N level refrigeration unit, the sound merit produced from thermoacoustic engine is delivered in refrigeration machine regenerator 3 and Sonic heat changing occurs, be pumped in the low-temperature end heat exchanger of N-1 level by the heat of N grade low-temp end heat exchanger 4, N grade low-temp end heat exchanger 4 keeps low temperature; As mentioned above, be delivered to sound merit in N-1 level refrigeration unit through Sonic heat changing, be pumped in the low-temperature end heat exchanger of N-2 level by the heat of N-1 grade low-temp end heat exchanger, N-1 grade low-temp end heat exchanger keeps low temperature; Finally, the heat of all low-temperature end heat exchangers is all pumped in refrigeration owner water cooler 2, and heat is taken away by cooling water, and the cryogenic temperature of N grade low-temp end heat exchanger is reduced to gas liquefaction temperature successively; Gas to be liquefied passes through the low-temperature end heat exchanger of each refrigeration unit successively according to cryogenic temperature order from high to low, and gas heat is absorbed, and temperature step reduces, and final gas is liquefied; Wherein, swell refrigeration is formed by being bypassed to a part of gas in pulse tube 7 from every grade of refrigeration machine regenerator 3.
In said apparatus, the pulse tube 7 of vascular refrigerator unit 1 belongs to coaxially arranged with the refrigeration machine regenerator 3 of refrigeration unit.
Described direct current suppressor 15 is elastic diaphragm element or asymmetric hydraulic component.Gas working medium flow in described bypass flow passage is regulated by resistance element; Resistance element is valve, aperture or capillary composition.The equal diameters of described every grade of refrigeration machine regenerator 3 or unequal.Described pulse tube 7 is equal diameter or non-isodiametric blank pipe.Described gas working medium is helium, hydrogen, nitrogen or its combination.Described gas to be liquefied is natural gas, nitrogen or hydrogen.
The multistage liquefying plant of loop Multi-stage heat phonomotor driving gas of the present invention, its advantage is: the simple movement-less part of its structure, thermoacoustic engine cell operation at traveling-wave phase, compact conformation, energy density is high; Adopt multiple low-temperature end heat exchanger as step low-temperature receiver, effectively reduce heat transfer loss, be conducive to liquefaction gas processes; System motion parts are less, and reliability is high, and structure is simple; Multi-channel shunt structure can make pulse tube bypass point become refrigeration position, forms swell refrigeration process in pulse tube, therefore, it is possible to obtain larger refrigerating capacity and lower cryogenic temperature; Arrange resistance filler at pulse tube bypass point place, the losses by mixture that air turbulence is brought can be reduced.The present invention can realize the overall flow of the multistage liquefaction of gas efficiently, has a good application prospect in liquid gas.
Accompanying drawing explanation
Fig. 1 is the refrigerator with multi-channel shunt pulse pipes structural representation that the people such as Zhou Yuan propose;
Fig. 2 is the acoustic resonance type capable ripple thermoacoustic refrigeration system structural representation that the people such as Luo Ercang propose;
Fig. 3 is the multistage liquefying plant of gas (embodiment 1) structural representation that loop Multi-stage heat phonomotor of the present invention drives;
Fig. 4 is the multistage liquefying plant of gas (embodiment 2) structural representation that loop Multi-stage heat phonomotor of the present invention drives.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with drawings and Examples, technical scheme of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The sound merit of present system to resonatron consumption reclaims, and has the higher potential thermal efficiency; System movement-less part, reliability is high, compact conformation, and energy density is high; Adopt multistage low-temperature receiver, gas temperature can be reduced by step, effectively can reduce heat transfer loss; System motion parts are less, and reliability is high, and structure is simple; Utilize multi-channel shunt structure that refrigeration machine can be made to obtain larger refrigerating capacity and lower cryogenic temperature, improve the efficiency of refrigeration machine; Arrange resistance filler at pulse tube bypass point place, the losses by mixture that air turbulence is brought can be reduced; This device efficiently, reliably can realize the integrated process of gas liquefaction.
Embodiment 1
Fig. 3 is gas multistage (4 grades) liquefying plant (embodiment 1) structural representation that loop Multi-stage heat phonomotor of the present invention drives.Its by 3 thermoacoustic engine unit (1#, 2#, 3#) by resonatron 23 join end to end form loop structure and 3 vascular refrigerator unit 1 form; Each thermoacoustic engine unit 14 forms by direct current suppressor 15, engine primary cooler 16, engine regenerator 17, heater 18, temperature end laminarization element 19, thermal buffer tube 20, engine room temperature end layer fluidisation element 21 and engine time cooler 22; Engine time cooler 22 exit of each thermoacoustic engine unit 14 is other connects a vascular refrigerator unit 1;
In the present embodiment, each vascular refrigerator unit 1 forms by refrigeration owner water cooler 2,4 grades of refrigeration units of serial connection, tube connector 5, pulse tube 7, refrigeration machine secondary water cooler 10, inertia tube 11 and air reservoir 12; Each refrigeration unit forms by a refrigeration machine regenerator 3 and low-temperature end heat exchanger 4 serial connection, and the refrigeration machine regenerator 3 of first order refrigeration unit is connected with refrigeration owner water cooler 2, and the low-temperature end heat exchanger 4 of the 4th grade of refrigeration unit is connected with tube connector 5; For reducing the loss that jet brings, low-temperature end water conservancy diversion silk screen 6 is equipped with in one end of the nearly tube connector 5 of described pulse tube 7, and the other end is equipped with refrigeration machine indoor temperature end water conservancy diversion silk screen 9; The refrigeration machine regenerator 3 of every grade of refrigeration unit is connected to form 1 bypass flow passage by bypass line 13 and pulse tube 7, and the resistance element adjusting each bar bypass flow channel capacity is valve; In pulse tube 7, resistance filler 8 is also housed, resistance filler 8 is axially laminated in the interface both sides of bypass gases working medium turnover pulse tube 7, and to make gas working medium evenly pass through smoothly, described resistance filler 8 is silk screen;
In the present embodiment 1, gas working medium is helium, and gas to be liquefied is natural gas, and heater 18 is connected with thermal source and absorbs the temperature end (923K) that heat from heat source forms identical temperature; Engine primary cooler 16, engine time cooler 22, refrigeration owner water cooler 2 and refrigeration machine time water cooler 10 by water quench to maintain room temperature range (310K); Formation temperature gradient on the engine regenerator 17 of every one-level thermoacoustic engine unit 14, produces thermoacoustic effect between engine regenerator 17 interior working gas and the solid packing in it, will be input to the converting heat Cheng Shenggong of heater 18; Sound merit is propagated along the positive direction of thermograde and amplifies, and a part of sound merit is delivered in vascular refrigerator unit 1, and another part is delivered in next stage thermoacoustic engine unit 14 by resonatron 23 and repeats above process; There is Sonic heat changing in the sound merit being delivered to vascular refrigerator unit 1: be delivered to sound merit in the 4th grade of refrigeration regenerator 17 through Sonic heat changing in every grade of refrigeration machine regenerator 17, be pumped in the low-temperature end heat exchanger 4 of 3rd level by the heat of the 4th grade low-temp end heat exchanger 4, the 4th grade low-temp end heat exchanger keeps low temperature; Be delivered to sound merit in 3rd level refrigeration unit through Sonic heat changing, be pumped into by the heat of 3rd level low-temperature end heat exchanger in the low-temperature end heat exchanger of the 2nd grade, 3rd level low-temperature end heat exchanger keeps low temperature; So, the heat of final all low-temperature end heat exchangers 4 is all pumped in refrigeration owner water cooler 2, and heat is taken away by cooling water; In adjacent refrigeration unit, the temperature difference of low-temperature end heat exchanger 4 is 50K, and namely the cryogenic temperature of the 1st to the 4th grade low-temp end heat exchanger is followed successively by 260K, 210K, 160K, 110K (natural gas liquefaction warm area); Natural gas to be liquefied according to cryogenic temperature from high to low successively by each low-temperature end heat exchanger, gas heat is absorbed, and temperature reduces successively, is finally liquefied; Wherein, the rigidity of gas in pulse tube 7 effectively can be increased by being bypassed to a part of gas in pulse tube 7 from refrigeration machine regenerator 3, pressure oscillation in pulse tube 7 can be made to become large, and the phase place of pressure oscillation and volume flow rate is more close simultaneously, is conducive to the efficiency improving pulse tube refrigerating machine.
Embodiment 2:
Fig. 4 is gas multistage (4 grades) liquefying plant (embodiment 2) structural representation that loop Multi-stage heat phonomotor of the present invention drives; This device by 3 thermoacoustic engine unit (1#, 2#, 3#) by resonatron 23 join end to end form loop structure and 3 vascular refrigerator unit 1 form; Each thermoacoustic engine unit 14 is made up of direct current suppressor 15, engine primary cooler 16, engine regenerator 17, heater 18, temperature end laminarization element 19, thermal buffer tube 20, engine room temperature end layer fluidisation element 21 and engine time cooler 22; Engine time cooler 22 exit of each thermoacoustic engine unit 14 is other connects a vascular refrigerator unit 1;
In each vascular refrigerator unit 1, a refrigeration machine regenerator 3 and a low-temperature end heat exchanger 4 be connected in series with it form one-level refrigeration unit, and the present embodiment has the 4 grades of refrigeration units be connected in series successively; Pulse tube 7 is positioned within the refrigeration machine regenerator of first to fourth grade of refrigeration unit, refrigeration machine regenerator 3 hot junction of first order refrigeration unit and pulse tube 7 hot junction all contact with refrigeration owner water cooler 2, and pulse tube 7 cold junction contacts with the 4th grade low-temp end heat exchanger 4; Air reservoir 12 is connected with refrigeration owner water cooler 2 by inertia tube 11;
Pulse tube 7 two ends are equipped with low-temperature end water conservancy diversion silk screen 6 and refrigeration machine indoor temperature end water conservancy diversion silk screen 9 respectively, to reduce the loss that jet brings; Have on wall at the refrigeration machine regenerator of every grade of refrigeration unit and pulse tube 7 and have the bypass flow passage that 1 aperture forms refrigeration machine regenerator and pulse tube; And resistance filler 8 is arranged in the pulse tube 7 of each aperture both sides, resistance filler is silk screen;
In the present embodiment 2, gas working medium is helium, and gas to be liquefied is natural gas, and heater 18 is connected with thermal source to absorb the temperature end (923K) that heat from heat source forms identical temperature; Engine primary cooler 16, engine time cooler 22, refrigeration owner water cooler 2 and refrigeration machine time water cooler 10 by water quench to maintain room temperature range (310K); Formation temperature gradient on the engine regenerator 17 of every one-level thermoacoustic engine unit 14, produces thermoacoustic effect between engine regenerator 17 interior working gas and the solid packing in it, will be input to the converting heat Cheng Shenggong of heater 18; Sound merit is propagated along the positive direction of thermograde and amplifies, and a part of sound merit is delivered in vascular refrigerator unit 1, and another part is delivered in next stage thermoacoustic engine unit by resonatron 23 and repeats above process; There is Sonic heat changing in the sound merit being delivered to vascular refrigerator unit 1: be delivered to sound merit in the 4th grade of refrigeration machine regenerator 3 through Sonic heat changing in every grade of refrigeration machine regenerator 3, be pumped in the low-temperature end heat exchanger of 3rd level by the heat of the 4th grade low-temp end heat exchanger 4, the 4th grade low-temp end heat exchanger keeps low temperature; Be delivered to sound merit in 3rd level refrigeration unit through Sonic heat changing, be pumped into by the heat of 3rd level low-temperature end heat exchanger in the low-temperature end heat exchanger of the 2nd grade, 3rd level low-temperature end heat exchanger keeps low temperature; As mentioned above, the heat of final all low-temperature end heat exchangers 4 is all pumped in refrigeration owner water cooler 2, and heat is taken away by cooling water.The temperature difference of the low-temperature end heat exchanger 4 in adjacent refrigeration unit is 50K, and namely the cryogenic temperature of 1st ~ 4 grade low-temp end heat exchangers is followed successively by 260K, 210K, 160K, 110K (natural gas liquefaction warm area).Natural gas to be liquefied passes through each low-temperature end heat exchanger successively according to cryogenic temperature order from high to low, and gas heat is absorbed, and temperature reduces successively, is finally liquefied.Wherein, the rigidity of gas in pulse tube effectively can be increased by being bypassed to a part of gas in pulse tube 7 from every grade of refrigeration machine regenerator 3, pressure oscillation in pulse tube can be made to become large, and the phase place of pressure oscillation and volume flow rate is more close simultaneously, is conducive to the efficiency improving pulse tube refrigerating machine.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (8)
1. the multistage liquefying plant of gas of a loop Multi-stage heat phonomotor driving, its by M thermoacoustic engine unit (14) by resonatron (23) join end to end form loop structure and M vascular refrigerator unit (1) form, M is 3 ~ 6 positive integers; Described thermoacoustic engine unit (14) is made up of the direct current suppressor be connected successively (15), engine primary cooler (16), engine regenerator (17), heater (18), temperature end laminarization element (19), thermal buffer tube (20), engine room temperature end layer fluidisation element (21) and engine time cooler 22; Engine time cooler (22) exit of each thermoacoustic engine unit (14) is other connects a vascular refrigerator unit (1);
Described vascular refrigerator unit (1) is made up of to N level refrigeration unit, tube connector (5), pulse tube (7), refrigeration machine time water cooler (10), inertia tube (11) and air reservoir (12) the refrigeration owner water cooler (2) be connected successively, first, and wherein N is 2 ~ 6 positive integers; Described refrigeration unit is made up of a refrigeration machine regenerator (3) and a low-temperature end heat exchanger (4) being connected in series with it; The refrigeration machine regenerator (3) of the 1st grade of refrigeration unit is connected with refrigeration owner's water cooler (2), and the low-temperature end heat exchanger (4) of N level refrigeration unit is connected with pulse tube (7) cold junction by tube connector (5); Pulse tube (7) two ends are equipped with low-temperature end water conservancy diversion silk screen (6) and refrigeration machine indoor temperature end water conservancy diversion silk screen (9) respectively;
In each vascular refrigerator unit (1), the refrigeration machine regenerator (3) of refrigeration unit is connected to form at least one bypass flow passage by bypass line (13) and pulse tube (7); Pulse tube (7) is built with resistance filler (8), resistance filler (8) is axially laminated in the interface both sides of gas working medium turnover pulse tube (7), and described resistance filler (8) is silk screen or porous media material;
The heater (18) of each thermoacoustic engine unit (14) is connected with thermal source to absorb the temperature end that heat from heat source forms identical temperature; Engine primary cooler (16) and engine time cooler (22) all cool to maintain room temperature range by water cooler; For this reason, the upper formation temperature gradient of the engine regenerator (17) of every one-level thermoacoustic engine unit (14); Under this thermograde, between engine regenerator (17) interior working gas and the solid packing in it, produce thermoacoustic effect, the converting heat Cheng Shenggong of heater (18) will be input to; Sound merit is propagated along the positive direction of thermograde and amplifies, and a part of sound merit is delivered in vascular refrigerator unit (1), and another part is delivered in next stage thermoacoustic engine unit by resonatron (23) and repeats above process; In vascular refrigerator unit (1), refrigeration owner's water cooler (2) and refrigeration machine time water cooler (10) maintain room temperature range by water quench; In N level refrigeration unit, the sound merit produced from thermoacoustic engine is delivered in refrigeration machine regenerator (3) and Sonic heat changing occurs, be pumped in the low-temperature end heat exchanger of N-1 level by the heat of N grade low-temp end heat exchanger (4), N grade low-temp end heat exchanger (4) keeps low temperature; As mentioned above, be delivered to sound merit in N-1 level refrigeration unit through Sonic heat changing, be pumped in the low-temperature end heat exchanger of N-2 level by the heat of N-1 grade low-temp end heat exchanger, N-1 grade low-temp end heat exchanger keeps low temperature; Finally, the heat of all low-temperature end heat exchangers is all pumped in refrigeration owner's water cooler (2), and heat is taken away by cooling water, and the cryogenic temperature of N grade low-temp end heat exchanger is reduced to gas liquefaction temperature successively; Gas to be liquefied passes through the low-temperature end heat exchanger of each refrigeration unit successively according to cryogenic temperature order from high to low, and gas heat is absorbed, and temperature step reduces, and final gas is liquefied; Wherein, swell refrigeration is formed by being bypassed to a part of gas in pulse tube (7) from every grade of refrigeration machine regenerator (3).
2. the multistage liquefying plant of gas of a loop Multi-stage heat phonomotor driving, its by M thermoacoustic engine unit (14) by resonatron (23) join end to end form loop structure and M vascular refrigerator unit (1) form, M is 3 ~ 6 positive integers; Described thermoacoustic engine unit (14) is made up of the direct current suppressor be connected successively (15), engine primary cooler (16), engine regenerator (17), heater (18), temperature end laminarization element (19), thermal buffer tube (20), engine room temperature end layer fluidisation element (21) and engine time cooler 22; Engine time cooler (22) exit of each thermoacoustic engine unit (14) is other connects a vascular refrigerator unit (1);
Described vascular refrigerator unit (1) is by refrigeration owner's water cooler (2), the first order be connected with refrigeration owner's water cooler (2) is to N level refrigeration unit, be positioned at the described first order to N level refrigeration unit refrigeration machine regenerator (3) within pulse tube (7), refrigeration machine time water cooler (10), inertia tube (11) and air reservoir (12) composition, wherein N is the positive integer of 2 ~ 6; Described refrigeration unit is made up of a refrigeration machine regenerator (3) and a low-temperature end heat exchanger (4) being connected in series with it; The refrigeration machine regenerator (3) of the 1st grade of refrigeration unit and pulse tube (7) indoor temperature end are connected with refrigeration owner's water cooler (2), and the low-temperature end heat exchanger (4) of N level refrigeration unit is connected with pulse tube (7) cold junction; Pulse tube (7) two ends are equipped with low-temperature end water conservancy diversion silk screen (6) and refrigeration machine indoor temperature end water conservancy diversion silk screen (9) respectively;
In each vascular refrigerator unit (1), the refrigeration machine regenerator (3) of refrigeration unit is connected by multiple through hole that both common walls are opened or the porous media wall directly made with pulse tube (7); Pulse tube (7) is built with resistance filler (8), resistance filler (8) is axially laminated in the interface both sides of gas working medium turnover pulse tube (7), and described resistance filler (8) is silk screen or porous media material;
The heater (18) of each thermoacoustic engine unit (14) is connected with thermal source to absorb the temperature end that heat from heat source forms identical temperature; Engine primary cooler (16) and engine time cooler (22) all cool to maintain room temperature range by water cooler; For this reason, the upper formation temperature gradient of the engine regenerator (17) of every one-level thermoacoustic engine unit (14); Under this thermograde, between engine regenerator (17) interior working gas and the solid packing in it, produce thermoacoustic effect, the converting heat Cheng Shenggong of heater (18) will be input to; Sound merit is propagated along the positive direction of thermograde and amplifies, and a part of sound merit is delivered in vascular refrigerator unit (1), and another part is delivered in next stage thermoacoustic engine unit by resonatron (23) and repeats above process; In vascular refrigerator unit (1), refrigeration owner's water cooler (2) and refrigeration machine time water cooler (10) maintain room temperature range by water quench; In N level refrigeration unit, the sound merit produced from thermoacoustic engine is delivered in refrigeration machine regenerator (3) and Sonic heat changing occurs, be pumped in the low-temperature end heat exchanger of N-1 level by the heat of N grade low-temp end heat exchanger (4), N grade low-temp end heat exchanger (4) keeps low temperature; As mentioned above, be delivered to sound merit in N-1 level refrigeration unit through Sonic heat changing, be pumped in the low-temperature end heat exchanger of N-2 level by the heat of N-1 grade low-temp end heat exchanger, N-1 grade low-temp end heat exchanger keeps low temperature; Finally, the heat of all low-temperature end heat exchangers is all pumped in refrigeration owner's water cooler (2), and heat is taken away by cooling water, and the cryogenic temperature of N grade low-temp end heat exchanger is reduced to gas liquefaction temperature successively; Gas to be liquefied passes through the low-temperature end heat exchanger of each refrigeration unit successively according to cryogenic temperature order from high to low, and gas heat is absorbed, and temperature step reduces, and final gas is liquefied; Wherein, swell refrigeration is formed by being bypassed to a part of gas in pulse tube (7) from every grade of refrigeration machine regenerator (3).
3., by the multistage liquefying plant of loop Multi-stage heat phonomotor driving gas described in claim 1 or 2, it is characterized in that, described direct current suppressor (15) is elastic diaphragm element or asymmetric hydraulic component.
4., by the multistage liquefying plant of loop Multi-stage heat phonomotor driving gas described in claim 1 or 2, it is characterized in that, the gas working medium flow in described bypass flow passage is regulated by resistance element; Resistance element is valve, aperture or capillary composition.
5. by the multistage liquefying plant of loop Multi-stage heat phonomotor driving gas described in claim 1 or 2, it is characterized in that, the equal diameters of described every grade of refrigeration machine regenerator (3) or unequal.
6., by the multistage liquefying plant of loop Multi-stage heat phonomotor driving gas described in claim 1 or 2, it is characterized in that, described pulse tube (7) is equal diameter blank pipe or non-equal diameter blank pipe.
7. by the multistage liquefaction flow path of a kind of loop Multi-stage heat phonomotor driving gas described in claim 1 or 2 and device, it is characterized in that, described gas working medium is helium, hydrogen, nitrogen or its combination.
8., by the multistage liquefaction flow path of a kind of loop Multi-stage heat phonomotor driving gas described in claim 1 or 2 and device, it is characterized in that, described gas to be liquefied is natural gas, nitrogen or hydrogen.
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