CN109654763A - A kind of acquisition vascular cold finger and inertia tube air reservoir phase modulation best match system and method - Google Patents
A kind of acquisition vascular cold finger and inertia tube air reservoir phase modulation best match system and method Download PDFInfo
- Publication number
- CN109654763A CN109654763A CN201910021594.7A CN201910021594A CN109654763A CN 109654763 A CN109654763 A CN 109654763A CN 201910021594 A CN201910021594 A CN 201910021594A CN 109654763 A CN109654763 A CN 109654763A
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- China
- Prior art keywords
- cold finger
- vascular
- air reservoir
- inertia tube
- vascular cold
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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
- 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
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- 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
- F25B2309/1411—Pulse-tube cycles characterised by control details, e.g. tuning, phase shifting or general control
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Instructional Devices (AREA)
Abstract
The invention discloses a kind of acquisition vascular cold fingers and inertia tube air reservoir phase modulation best match system and method.System includes Linearkompressor, vascular cold finger, Active phasing device, inertia tube air reservoir, pressure sensor, displacement sensor, oscillograph, hot-wire anemometer, vacuum dewar and refrigeration system for measuring quantity.Pressure sensor is for measuring cold finger import and export pressure wave；Displacement sensor is used to measure compressor scavenging volume；Oscillograph is used to measure the phase relation of pressure wave and piston displacement；Active phasing device is first passed through, when finding vascular cold finger and reaching optimum performance, the phase relation of cold finger pressure wave and volume flow.Phase modulation apparatus is changed to inertia tube air reservoir again, changes its dimensional parameters, reaches the phase relation with vascular cold finger pressure wave and volume flow when Active phasing, vascular cold finger is made to be optimal performance.The invention has the advantages that the interference of vascular cold finger refrigeration measurement can be excluded, independent assessment is carried out to vascular cold finger performance superiority and inferiority, operation is easy, and structure is simple.
Description
Technical field:
The present invention is under the jurisdiction of regenerating type low-temperature refrigerator field, and in particular to a kind of acquisition vascular cold finger and inertia tube gas
Library phase modulation best match system and method.
Background technique:
Vascular refrigerator is a kind of novel regenerating type low-temperature refrigerator, and compared with traditional sterlin refrigerator, it is eliminated
The mechanical moving element of cold end obtains ideal phase relation using the phase modulating mechanism in hot end, vibration simple with structure
Small, high reliability.Since the 1980s, vascular refrigerator has at home and abroad obtained extensive attention and research,
Aerospace, superconduction industry, cryotronics, in terms of be widely applied.With to pulse tube refrigeration mechanism
Further investigation and adjusted device gradually improvement, vascular refrigerator technology is ripe day by day, especially 80K or more warm area
Efficiency can reach and the comparable level of sterlin refrigerator.
Vascular refrigerator is made of Linearkompressor, vascular cold finger, phase modulating mechanism three parts, the efficient operation of refrigeration machine
There are much relations with the degree of coupling of three parts.The phase of vascular refrigerator refers to that pressure wave shakes everywhere in vascular refrigerator
Phase angle between width, quality stream amplitude and pressure wave and quality stream.Since vascular refrigerator is compared to sterlin refrigerator
For, without displacer, so rather important, the suitable phase between pressure wave and quality stream that phase adjusted appropriate becomes
Difference, the heat exchange efficiency that reasonable phase relation can be effectively reduced regenerative losses, optimize vascular cold finger.At present due to backheat
The close coupling characteristic of compressor and vascular cold finger and phase modulating mechanism in formula Cryo Refrigerator, can only be according to the entirety of refrigeration machine
Performance carries out indirect problem diagnosis, does not have a kind of method that vascular refrigerator cold finger can be made to obtain with inertia tube air reservoir phase modulation
To best match.
Summary of the invention:
The object of the present invention is to provide a kind of vascular cold fingers and inertia tube air reservoir phase modulation best match preparation method, solve
Existing regenerating type low-temperature refrigerator can not carry out vascular cold finger and inertia tube air reservoir phase modulation best match preparation method superiority and inferiority only
The problem of vertical, effectively evaluating.
The refrigeration system that the present invention optimizes, including Linearkompressor 1, the first dynamic pressure transducer 2, vascular to be evaluated
Cold finger 3, vacuum dewar 4, refrigeration system for measuring quantity 5, inertia tube 6, air reservoir 7, oscillograph 8, the first displacement sensor 9, second is dynamic
State pressure sensor 10, hot-wire anemometer 11, Active phasing piston 12, second displacement sensor 13；
The determination method of vascular cold finger optimum phase of the present invention, comprising the following steps:
1) by the piston displacement of driving Linearkompressor 1 and Active phasing piston 12, the phase difference of two-piston is adjusted,
Refrigeration system for measuring quantity 5 measures cryogenic temperature TcWith refrigerating capacity Qc, obtain the phase difference when optimum performance of cold finger 3；
2) it changes phase modulation apparatus into inertia tube 6 air reservoir 7 and oscillography is utilized by the input power of linear adjustment compressor 1
Device 8 reads the amplitude and phase difference of displacement sensor 9 and dynamic pressure transducer 10, i.e. compressor piston is displaced X, pressure wave
P, the phase difference θ of pressure wave and compression piston displacement；Hot-wire anemometer 11 reads its volume flow rate；
3) 1 output sound function W of Linearkompressor is calculated according to thermoacoustic theory indirectlyaAre as follows: Wa=π fA | P | | X | sin
θ, wherein A is piston face product, and f is running frequency；
4) by constantly changing the specifications parameter of 6 air reservoir 7 of inertia tube, the phase of vascular cold finger 3 can effectively be adjusted
Difference；
5) when phase difference being adjusted to step 1 using the phase modulation ability of 6 air reservoir 7 of inertia tube when vascular 3 optimum performance of cold finger
Phase difference；
6) phase difference when vascular is in optimum performance, vascular cold finger 3 and 6 air reservoir 7 of inertia tube have obtained best match.
The present invention has the advantages that when solving existing regenerating type low-temperature refrigerator overall performance and being not up to design object, it is right
Whether vascular cold finger, which is in optimum phase and makes, effectively determines.Provide a kind of vascular cold finger and inertia tube air reservoir best
With preparation method, make in optimal phase difference between pressure wave and quality stream, suitable phase relation can reduce backheat damage
It loses, the heat exchange efficiency of optimization vascular cold finger, to improve refrigeration machine performance.
Detailed description of the invention:
Fig. 1 is the experiment schematic diagram that the present invention obtains vascular cold finger and inertia tube air reservoir optimum match method；
In figure: 1, Linearkompressor；2, the first dynamic pressure transducer；3, vascular cold finger to be evaluated；3.1, arteries and veins to be evaluated
The main hot end heat exchanger of pipe cold finger；3.2, vascular cold finger regenerator to be evaluated；3.3, vascular cold finger cool end heat exchanger to be evaluated；
3.4, vascular cold finger vascular to be evaluated；3.5, vascular cold finger to be evaluated time hot end heat exchanger；4, vacuum dewar；5, refrigeration measures
Amount system；6, inertia tube；7, air reservoir；8, oscillograph；9, displacement sensor；10, the second dynamic pressure transducer；11, hot line wind
Fast instrument；12, Active phasing piston；13, second displacement sensor.
Specific embodiment:
The present invention is further described with reference to the accompanying drawings and embodiments.
As shown in Figure 1, a kind of vascular cold finger of the present invention and inertia tube air reservoir best match preparation method, including linearly press
Contracting machine 1, the first dynamic pressure transducer 2, vascular cold finger 3 to be evaluated, vacuum dewar 4, refrigeration system for measuring quantity 5, inertia tube 6,
Air reservoir 7, oscillograph 8, the first displacement sensor 9, the second dynamic pressure transducer 10, hot-wire anemometer 11, Active phasing piston
12, second displacement sensor 13.
Linearkompressor opens seal groove on 1 venthole section, match rubber seal, and with the first dynamic pressure sensing
Device 2 is threadedly coupled；First dynamic pressure transducer 2 and 3 air inlet flanged joint of vascular cold finger to be evaluated, match metallic packing ring；
3 gas outlet of vascular cold finger to be evaluated and 10 flanged joint of the second dynamic pressure transducer match metallic packing ring；Dynamic pressure passes
Sensor 10 is threadedly coupled with inertia tube 6 and 7 air inlet of air reservoir, matches metallic packing ring；3 periphery installation of vascular cold finger to be evaluated is true
Empty Dewar 4, vacuum degree 10 when keeping testing-4Pa or more；3 cool end heat exchanger 3.3 of vascular cold finger installation refrigeration measurement to be evaluated
The measuring instrument measurement cryogenic temperature and refrigerating capacity of system 5；Displacement sensor 9 is installed on 1 compression piston of Linearkompressor and is moved
State pressure sensor 10 is connected to oscillograph 8 together.
The evaluation method of the invention device sequentially includes the following steps:
1) by the piston displacement of driving Linearkompressor 1 and Active phasing piston 12, the phase difference of two-piston is adjusted,
Refrigeration system for measuring quantity 5 measures cryogenic temperature TcWith refrigerating capacity Qc, obtain the phase difference when optimum performance of cold finger 3；
2) it changes phase modulation apparatus into inertia tube 6 air reservoir 7 and oscillography is utilized by the input power of linear adjustment compressor 1
Device 8 reads the amplitude and phase difference of displacement sensor 9 and dynamic pressure transducer 10, i.e. compressor piston is displaced X, pressure wave
P, the phase difference θ of pressure wave and compression piston displacement；Hot-wire anemometer 11 reads its volume flow rate；
3) 1 output sound function W of Linearkompressor is calculated according to thermoacoustic theory indirectlyaAre as follows: Wa=π fA | P | | X | sin
θ, wherein A is piston face product, and f is running frequency；
4) by constantly changing the specifications parameter of 6 air reservoir 7 of inertia tube, the phase of vascular cold finger 3 can effectively be adjusted
Difference；
5) when phase difference being adjusted to step 1 using the phase modulation ability of 6 air reservoir 7 of inertia tube when vascular 3 optimum performance of cold finger
Phase difference；
6) phase difference when vascular is in optimum performance, vascular cold finger 3 and 6 air reservoir 7 of inertia tube have obtained best match.
Finally, it should be noted that It should be understood by those skilled in the art that the present invention is not limited to the above embodiments,
The above embodiments and description only illustrate the principle of the present invention, before not departing from spirit and scope of the invention
It puts, various changes and improvements may be made to the invention, and these changes and improvements all fall within the protetion scope of the claimed invention.
The scope of the present invention is defined by the appended claims and its equivalents.
Claims (2)
1. a kind of acquisition vascular cold finger and inertia tube air reservoir phase modulation best match system, including Linearkompressor (1), the first dynamic
Pressure sensor (2), vascular cold finger to be evaluated (3), vacuum dewar (4), refrigeration system for measuring quantity (5), inertia tube (6), air reservoir
(7), oscillograph (8), displacement sensor (9), the second dynamic pressure transducer (10), hot-wire anemometer (11), Active phasing piston
(12), second displacement sensor (13)；It is characterized by:
Seal groove is opened on described Linearkompressor (1) the venthole section, matches rubber seal, and pass with the first dynamic pressure
Sensor (2) is threadedly coupled；First dynamic pressure transducer (2) and vascular cold finger (3) air inlet flanged joint to be evaluated match metal
Sealing ring；Vascular cold finger (3) gas outlet to be evaluated and the second dynamic pressure transducer (10) flanged joint match metallic packing ring；
Dynamic pressure transducer (10) is threadedly coupled with inertia tube (6) and air reservoir (7) air inlet, matches metallic packing ring；Vascular to be evaluated
Cold finger (3) periphery installation vacuum dewar (4), vacuum degree 10 when keeping testing-4Pa or more；Vascular cold finger (3) cold end to be evaluated is changed
The measuring instrument measurement cryogenic temperature and refrigerating capacity of hot device (3.3) installation refrigeration system for measuring quantity (5)；Linearkompressor (1) compression
Displacement sensor (9) and dynamic pressure transducer (10) are installed on piston and are connected to oscillograph (8) together.
2. a kind of cold based on acquisition vascular cold finger described in claim 1 and the vascular of inertia tube air reservoir phase modulation best match system
Refer to and inertia tube air reservoir phase modulation best match preparation method, it is characterised in that the following steps are included:
1) by the piston displacement of driving Linearkompressor (1) and Active phasing piston (12), the phase difference of two-piston is adjusted, is made
Cooling capacity measuring system (5) measures cryogenic temperature TcWith refrigerating capacity Qc, obtain the phase difference when optimum performance of cold finger (3)；
2) it changes phase modulation apparatus into inertia tube (6) air reservoir (7) and oscillography is utilized by the input power of linear adjustment compressor (1)
Device (8) reads the amplitude and phase difference of displacement sensor (9) and dynamic pressure transducer (10), i.e. compressor piston is displaced X, pressure
Reeb P, the phase difference θ of pressure wave and compression piston displacement；Hot-wire anemometer (11) reads its volume flow rate；
3) Linearkompressor (1) output sound function W is calculated according to thermoacoustic theory indirectlyaAre as follows: Wa=π fA | P | | X | sin θ,
Middle A is piston face product, and f is running frequency；
4) by constantly adjusting the specifications parameter of inertia tube (6) air reservoir (7), the phase of vascular cold finger (3) can effectively be adjusted
Difference；
5) the phase modulation ability of inertia tube (6) air reservoir (7), vascular cold finger (3) optimality when phase difference is adjusted to step (1) are utilized
Phase difference when energy；
6) phase difference when vascular is in optimum performance, vascular cold finger (3) and inertia tube (6) air reservoir (7) have obtained best match.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910021594.7A CN109654763B (en) | 2019-01-10 | 2019-01-10 | System and method for obtaining optimal matching of vessel cold finger and inertia tube gas reservoir phase modulation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910021594.7A CN109654763B (en) | 2019-01-10 | 2019-01-10 | System and method for obtaining optimal matching of vessel cold finger and inertia tube gas reservoir phase modulation |
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| CN109654763A true CN109654763A (en) | 2019-04-19 |
| CN109654763B CN109654763B (en) | 2023-05-05 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112966399A (en) * | 2021-04-15 | 2021-06-15 | 苏州大学张家港工业技术研究院 | Pulse tube refrigerator working condition prediction method and system based on machine learning |
| CN113074470A (en) * | 2021-05-12 | 2021-07-06 | 中国科学院上海技术物理研究所 | Pulse tube refrigerator with low-temperature cavity structure |
| CN113074468A (en) * | 2021-04-13 | 2021-07-06 | 中国科学院上海技术物理研究所 | Pulse tube refrigerator system with single piston phase modulation and vibration reduction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113074468A (en) * | 2021-04-13 | 2021-07-06 | 中国科学院上海技术物理研究所 | Pulse tube refrigerator system with single piston phase modulation and vibration reduction method thereof |
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| CN113074470B (en) * | 2021-05-12 | 2024-03-26 | 中国科学院上海技术物理研究所 | Pulse tube refrigerator with low-temperature cavity structure |
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| CN109654763B (en) | 2023-05-05 |
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