CN209445628U - A kind of acquisition vascular cold finger and inertia tube air reservoir phase modulation best match system - Google Patents
A kind of acquisition vascular cold finger and inertia tube air reservoir phase modulation best match system Download PDFInfo
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- CN209445628U CN209445628U CN201920036740.9U CN201920036740U CN209445628U CN 209445628 U CN209445628 U CN 209445628U CN 201920036740 U CN201920036740 U CN 201920036740U CN 209445628 U CN209445628 U CN 209445628U
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Abstract
This patent discloses a kind of acquisition vascular cold fingers and inertia tube air reservoir phase modulation best match system.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.This patent advantage is that the interference of vascular cold finger refrigeration measurement can be excluded, carries out independent assessment to vascular cold finger performance superiority and inferiority, operate and be easy, structure is simple.
Description
Technical field:
This patent 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 air reservoir
Phase modulation best match system.
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 the effect of 80K or more warm area
Rate 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 with
The degree of coupling of three parts has much relations.The phase of vascular refrigerator refer in vascular refrigerator everywhere pressure wave amplitude,
Phase angle between quality stream amplitude and pressure wave and quality stream.Since vascular refrigerator comes compared to sterlin refrigerator
It says, without displacer, so rather important, the suitable phase difference between pressure wave and quality stream that phase adjusted appropriate becomes,
The heat exchange efficiency that reasonable phase relation can be effectively reduced regenerative losses, optimize vascular cold finger.At present since back-heating type is low
The close coupling characteristic of compressor and vascular cold finger and phase modulating mechanism in warm refrigeration machine, can only according to the overall performance of refrigeration machine into
The problem of in the ranks connecing diagnosis does not have a kind of method that vascular refrigerator cold finger and inertia tube air reservoir phase modulation can be made to obtain best
Match.
Summary of the invention:
The purpose of this patent is to provide a kind of vascular cold finger and the phase modulation best match of inertia tube air reservoir obtains system, solves existing
Have regenerating type low-temperature refrigerator vascular cold finger and inertia tube air reservoir phase modulation best match preparation method superiority and inferiority can not be carried out it is independent,
The problem of effectively evaluating.
The refrigeration system of this patent optimization, including Linearkompressor 1, the first dynamic pressure transducer 2, vascular to be evaluated are cold
Refer to 3, 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 sensor 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 transducer
2 are threadedly coupled；First dynamic pressure transducer 2 and 3 air inlet flanged joint of vascular cold finger to be evaluated, match metallic packing ring；To
3 gas outlet of vascular cold finger and 10 flanged joint of the second dynamic pressure transducer are evaluated, metallic packing ring is matched；Dynamic pressure transducer
10 are threadedly coupled with inertia tube 6 and 7 air inlet of air reservoir, match metallic packing ring；3 periphery installation vacuum dewar of vascular cold finger to be evaluated
4, vacuum degree 10 when keeping testing-4Pa or more；3 cool end heat exchanger 3.3 of vascular cold finger installation refrigeration system for measuring quantity 5 to be evaluated
Measuring instrument measures cryogenic temperature and refrigerating capacity；Displacement sensor 9 and dynamic pressure sensing are installed on 1 compression piston of Linearkompressor
Device 10 is connected to oscillograph 8 together.
The determination method of this patent vascular cold finger optimum phase, 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, 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 oscillograph is utilized by the input power of linear adjustment compressor 1
8 read the amplitude and phase difference of displacement sensor 9 and dynamic pressure transducer 10, i.e. compressor piston is displaced X, pressure wave P, pressure
The phase difference θ of Reeb 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 advantages of this patent, is: right when solving existing regenerating type low-temperature refrigerator overall performance and being not up to design object
Whether vascular cold finger, which is in optimum phase and makes, effectively determines.Provide a kind of vascular cold finger and the best match of inertia tube air reservoir
Preparation method makes between pressure wave and quality stream in optimal phase difference, suitable phase relation can reduce regenerative losses,
The heat exchange efficiency for optimizing vascular cold finger, to improve refrigeration machine performance.
Detailed description of the invention:
Fig. 1 is the experiment schematic diagram that this patent 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 measurement system
System；6, inertia tube；7, air reservoir；8, oscillograph；9, displacement sensor；10, the second dynamic pressure transducer；11, hot-wire anemometer；
12, Active phasing piston；13, second displacement sensor.
Specific embodiment:
This patent is further described with reference to the accompanying drawings and embodiments.
As shown in Figure 1, a kind of vascular cold finger of this patent and inertia tube air reservoir best match preparation method, including linear compression
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, gas
Library 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 transducer
2 are threadedly coupled；First dynamic pressure transducer 2 and 3 air inlet flanged joint of vascular cold finger to be evaluated, match metallic packing ring；To
3 gas outlet of vascular cold finger and 10 flanged joint of the second dynamic pressure transducer are evaluated, metallic packing ring is matched；Dynamic pressure transducer
10 are threadedly coupled with inertia tube 6 and 7 air inlet of air reservoir, match metallic packing ring；3 periphery installation vacuum dewar of vascular cold finger to be evaluated
4, vacuum degree 10- when keeping testing4Pa or more；3 cool end heat exchanger 3.3 of vascular cold finger installation refrigeration system for measuring quantity 5 to be evaluated
Measuring instrument measurement cryogenic temperature and refrigerating capacity；Displacement sensor 9 is installed on 1 compression piston of Linearkompressor and dynamic pressure passes
Sensor 10 is connected to oscillograph 8 together.
The evaluation method of the Patent equipment 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, 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 oscillograph is utilized by the input power of linear adjustment compressor 1
8 read the amplitude and phase difference of displacement sensor 9 and dynamic pressure transducer 10, i.e. compressor piston is displaced X, pressure wave P, pressure
The phase difference θ of Reeb 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 this patent is not restricted to the described embodiments, on
The principle for only illustrating this patent described in embodiment and specification is stated, in the premise for not departing from this patent spirit and scope
Under, this patent will also have various changes and improvements, these changes and improvements are both fallen within the scope of claimed this patent.This is specially
The claimed range of benefit is defined by the appending claims and its equivalent thereof.
Claims (1)
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.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920036740.9U CN209445628U (en) | 2019-01-10 | 2019-01-10 | A kind of acquisition vascular cold finger and inertia tube air reservoir phase modulation best match system |
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|---|---|---|---|
| CN201920036740.9U CN209445628U (en) | 2019-01-10 | 2019-01-10 | A kind of acquisition vascular cold finger and inertia tube air reservoir phase modulation best match system |
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| CN209445628U true CN209445628U (en) | 2019-09-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN114396737A (en) * | 2021-04-13 | 2022-04-26 | 中国科学院上海技术物理研究所 | Stirling pulse tube composite refrigerator with low-temperature piston active phase modulation |
-
2019
- 2019-01-10 CN CN201920036740.9U patent/CN209445628U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114396737A (en) * | 2021-04-13 | 2022-04-26 | 中国科学院上海技术物理研究所 | Stirling pulse tube composite refrigerator with low-temperature piston active phase modulation |
| 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 |
| 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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