CN104296411B - Use 4K low temperature pulse tubes refrigeration machine and the method for centrifugal screw type regenerator - Google Patents
Use 4K low temperature pulse tubes refrigeration machine and the method for centrifugal screw type regenerator Download PDFInfo
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- CN104296411B CN104296411B CN201410523678.8A CN201410523678A CN104296411B CN 104296411 B CN104296411 B CN 104296411B CN 201410523678 A CN201410523678 A CN 201410523678A CN 104296411 B CN104296411 B CN 104296411B
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000005057 refrigeration Methods 0.000 title abstract description 18
- 239000007789 gas Substances 0.000 claims abstract description 60
- 239000012530 fluid Substances 0.000 claims abstract description 36
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000001307 helium Substances 0.000 claims abstract description 22
- 229910052734 helium Inorganic materials 0.000 claims abstract description 22
- 230000000694 effects Effects 0.000 claims abstract description 7
- 230000002792 vascular Effects 0.000 claims description 66
- 238000010438 heat treatment Methods 0.000 claims description 44
- 210000003462 vein Anatomy 0.000 claims description 33
- 238000001816 cooling Methods 0.000 claims description 22
- 238000010992 reflux Methods 0.000 claims description 13
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 235000019628 coolness Nutrition 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 210000001367 artery Anatomy 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims 3
- 238000007906 compression Methods 0.000 claims 3
- 238000010521 absorption reaction Methods 0.000 claims 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000036772 blood pressure Effects 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- SWQJXJOGLNCZEY-BJUDXGSMSA-N helium-3 atom Chemical compound [3He] SWQJXJOGLNCZEY-BJUDXGSMSA-N 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Classifications
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a kind of 4K low temperature pulse tubes refrigeration machine using centrifugal screw type regenerator and method, belong to refrigeration technology field.Its feature is that three grades of regenerators (13) add centrifugal screw type runner (5) less than 20K warm area position, the most centrifugal screw type runner (5) hot junction is connected with three grades of cold ends of regenerator (13), and the cold end of centrifugal screw type runner (5) and three grades of cool end heat exchanger (18) first ends connect；Centrifugal helical flow path (5) can make the character working in the fluid helium of this warm area closer to ideal gas.Therefore the refrigerating efficiency for raising low temperature philip refrigerator has vital effect.
Description
Technical field
The present invention relates to a kind of 4K warm area low temperature stirling-type vascular refrigerator using centrifugal screw type regenerator.
Background technology
Low temperature back-heating type vascular refrigerator is by compressor, regenerator, cool end heat exchanger, hot end heat exchanger, heat bridge, inertia
Pipe, the parts such as air reservoir composition.Vascular refrigerator simple in construction, easy to control, cold end does not has moving component, and reliability is high, work
Life-span is long, and cryogenic temperature is low.Because its advantage, low temperature back-heating type vascular refrigerator became research heat at space industry in recent years
Point.
Common low temperature back-heating type vascular refrigerator has two kinds, G-M type low frequency vascular refrigerator and stirling-type high frequency arteries and veins
Control cold.The back-heating type stirling-type vascular refrigerator that the present invention relates to is high because of its operating frequency, and volume is little, vibrates little,
Liquid helium region has important application prospect.
Operation temperature area as little as below the 20K of low temperature back-heating type vascular refrigerator, at this warm area, the real gas of working medium helium
Matter can deviate significantly from ideal gas character.Real gas loss is the low temperature back-heating type vascular refrigerator leading damage at low temperature warm area
Lose.The effective ways reducing real gas loss are to reduce pressure.Such as use throttle pipe to gas throttling blood pressure lowering, increase and expand
Device, bidirection air intake by time equal enthalpy stream reach maximum etc..
Summary of the invention
It is an object of the invention to use centrifugal screw type regenerator, make fluid closer to the character of ideal gas, reduce
The loss that fluid deviates ideal gas character and causes, thus improve the efficiency of 4K warm area vascular refrigerator.
A kind of 4K warm area low temperature pulse tubes refrigeration machine using centrifugal screw type regenerator, including one-level back-heating type vascular system
Cold, two grades of back-heating type vascular refrigerators, three grades of back-heating type vascular refrigerators, heat bridges；
Wherein one-level back-heating type vascular refrigerator includes stage compressor, one-level cooler, one-level regenerator, one-level arteries and veins
Pipe, one-level hot end heat exchanger, one-level inertia tube, one-level air reservoir;The wherein outlet of stage compressor and the entrance of one-level cooler
Being connected, the outlet of one-level cooler entrance with one-level regenerator again is connected, the outlet connection one-level hot junction heat exchange of one-level vascular
Device the first end, one-level hot end heat exchanger the second end connects one-level air reservoir through one-level inertia tube；
Wherein two grades of back-heating type vascular refrigerators include split-compressor, secondary coolers, two grades of regenerators, secondary veins
Pipe, two grades of hot end heat exchangers, two grades of inertia tubes, two grades of air reservoirs;Wherein split-compressor outlet connects secondary coolers entrance,
Secondary coolers outlet connects two grades of regenerator entrances, and the outlet of secondary vein pipe connects two grades of hot end heat exchanger first ends, two grades of heat
End heat exchanger the second end connects two grades of air reservoirs through two grades of inertia tubes；
Wherein three grades of back-heating type vascular refrigerators include three-stage blower, three grades of coolers, three grades of regenerators, centrifugal spiral shells
Rotation type runner, three grades of cool end heat exchangers, tertiary vein pipe, three grades of hot end heat exchangers, three grades of inertia tubes, three grades of air reservoirs;Wherein three grades
Compressor outlet connects three grades of cooler entrances, and three grades of cooler outlets connect three grades of regenerator hot junctions, three grades of cold ends of regenerator
Connecting three grades of cool end heat exchanger first ends, three grades of cool end heat exchanger second ends connect tertiary vein tube inlet, and the outlet of tertiary vein pipe is even
Connecing three grades of hot end heat exchanger first ends, three grades of hot end heat exchanger second ends connect three grades of air reservoirs by three grades of inertia tubes；
The outlet of above-mentioned one-level regenerator and the entrance of one-level vascular are connected to three grades of regenerators and two grades of backheats by heat bridge
Device, the outlet of two grades of regenerators and the entrance of secondary vein pipe are connected to three grades of regenerators, the outlet of tertiary vein pipe and three by heat bridge
Level hot end heat exchanger；
It is characterized in that: third level vascular refrigerator uses centrifugal screw type regenerator, and this regenerator makes to work in this
The character of the fluid helium of warm area is closer to ideal gas.
The feature using the 4K warm area low temperature pulse tubes refrigeration machine of centrifugal screw type regenerator includes procedure below:
After the process of refrigerastion of the first order is stage compressor compressed gas, gas enters the cooling of one-level cooler, then gas
After body entrance one-level regenerator is lowered the temperature further, enter one-level vascular.Heat is passed through one intrinsic pressure the contracing of one-level vascular by gas
Level hot end heat exchanger refluxes after discharging, and expands cooling, and absorb the thermic load from heat bridge in reflux course.One-level inertia tube and
One-level air reservoir is to gas phase modulation.Relying on the thermal coupling of heat bridge, one-level back-heating type vascular refrigerator is to two grades of back-heating type pulse tube refrigerations
Machine and three grades of back-heating type vascular refrigerator pre-coolings, two grades of back-heating type vascular refrigerators are to three grades of back-heating type vascular refrigerator pre-coolings.
After the process of refrigerastion of the second level is split-compressor compressed gas, gas is made to enter secondary coolers cooling, then
After gas two grades of regenerators of entrance are lowered the temperature further, enter secondary vein pipe.Heat is passed through by gas intrinsic pressure the contracing of secondary vein pipe
Two grades of hot end heat exchangers reflux after discharging, and expand cooling, absorb the thermic load from heat bridge in reflux course.Two grades of inertia tubes and
Two grades of air reservoirs are to gas phase modulation.Relying on the thermal coupling of heat bridge, two grades of back-heating type vascular refrigerators are to three grades of back-heating type pulse tube refrigerations
Machine pre-cooling.
After the process of refrigerastion of the third level is three-stage blower compressed gas, gas is made to enter three grades of cooler coolings, then
After gas three grades of regenerators of entrance are lowered the temperature further, enter tertiary vein pipe.Heat is passed through by gas intrinsic pressure the contracing of tertiary vein pipe
Three grades of hot end heat exchangers reflux after discharging, and expand cooling, absorb the thermic load from three grades of cool end heat exchangers in reflux course.Three
Level inertia tube and three grades of air reservoirs are to gas phase modulation.It is filled with copper mesh inside the cold end of third level regenerator and ensures heat exchange and from spiral shell
The laminarization of the helium working medium that rotation type runner flows out, screw type runner makes the character working in the fluid helium of this warm area closer to ideal
Gas.It is filled with copper mesh inside the cold end of third level regenerator and ensures heat exchange and the layer of the helium working medium from the outflow of screw type runner
Fluidisation, centrifugal helical flow path is gradually reduced from hot junction to its radius of spin of cold end, and its effect makes to work in this warm area
The character of fluid helium is closer to ideal gas.
The 4K low temperature pulse tubes refrigeration machine using centrifugal screw type regenerator is compared with other vascular refrigerators.When fluid from
During regenerator hot junction flow to cold end, in regenerator, the flow area of working fluid helium is gradually reduced, and fluid velocity increases,
Pressure reduces, so that the character of fluid is closer to ideal gas, reduces owing to helium working medium deviation ideal gas characteristic causes
Regenerator loss；When fluid refluxes from vascular, through centrifugal screw type regenerator, the runner of working fluid helium in regenerator
Area is gradually increased, and fluid velocity reduces, and pressure is gradually increased.Along the internal hot junction of screw type regenerator to cold extreme direction formed by
The least barometric gradient so that regenerator cold end working medium is in lower pressure environment, reduces real gas and loses, and regenerator spiral shell
Rotation type runner hot junction working medium is under relative high pressure, is more conducive to the refrigeration effect improving working medium at respective warm area.20K warm area
The loss of following real gas is the leading loss (accounting for 50%-80%) of 4K warm area low temperature philip refrigerator.Compared to two dimension gradually
Miniature regenerator runner, the circulation area change of centrifugal helical flow path is milder, the beneficially laminarization of fluid.The present invention is led to
Cross and using centrifugal screw type regenerator less than 20K warm area position, make the fluid helium character working in this warm area closer to reason
Thinking gas, therefore the refrigerating efficiency for raising low temperature philip refrigerator has vital effect.
Accompanying drawing explanation
Fig. 1 is a kind of low temperature back-heating type stirling-type vascular refrigerator；
Fig. 2 is the screw type runner of centrifugal screw type regenerator；
Fig. 3 is that real gas loses QUOTE Ratio and the relation of pressure with cold end PV merit；
Label title in figure: 1, stage compressor, 2, one-level cooler, 3, one-level regenerator, 4, heat bridge, 5, centrifugal
Screw type runner, 6, one-level vascular, 7, one-level hot end heat exchanger, 8, one-level inertia tube, 9, one-level air reservoir, 10, one-level back-heating type
Vascular refrigerator, 11, three-stage blower, 12, three grades of coolers, 13, three grades of regenerators, 14, three grades of air reservoirs, 15, three grades of inertia
Pipe, 16, three grades of hot end heat exchangers, 17, tertiary vein pipe, 18, three grades of cool end heat exchangers, 19, three grades of back-heating type vascular refrigerators,
20, split-compressor, 21, secondary coolers, 22, two grades of regenerators, 23, secondary vein pipe, 24, two grades of hot end heat exchangers, 25, two
Level inertia tube, 26, two grades of air reservoirs, 27, two grades of back-heating type vascular refrigerators.
Detailed description of the invention
Shown in Fig. 1, have employed the 4K low temperature pulse tubes refrigeration machine of centrifugal screw type regenerator, including one-level back-heating type vascular
Refrigeration machine 10, two grades of back-heating type vascular refrigerators 27, three grades of back-heating type vascular refrigerators 19, heat bridges 4；
Wherein one-level back-heating type vascular refrigerator 10 includes stage compressor 1, one-level cooler 2, one-level regenerator 3,
Level vascular 6, one-level hot end heat exchanger 7, one-level inertia tube 8, one-level air reservoir 9;Wherein the outlet of stage compressor 1 cools down with one-level
The entrance of device 2 is connected, and the outlet of one-level cooler 2 entrance with one-level regenerator 3 again is connected, the outlet connection of one-level vascular 6
One-level hot end heat exchanger 7 first end, one-level hot end heat exchanger 7 second end connects one-level air reservoir 9 through one-level inertia tube 8；
Wherein two grades of back-heating type vascular refrigerators 27 include split-compressor 20,21, two grades of regenerators 22 of secondary coolers,
23, two grades of hot end heat exchangers of secondary vein pipe, 25, two grades of air reservoirs 26 of 24, two grades of inertia tubes;Wherein split-compressor 20 outlet connects
Secondary coolers 21 entrance, secondary coolers 21 outlet connects two grades of regenerator 22 entrances, and secondary vein pipe 23 outlet connects two grades
Hot end heat exchanger 24 first end, two grades of hot end heat exchanger 24 second ends connect two grades of air reservoirs 26 through two grades of inertia tubes 25；
Wherein three grades of back-heating type vascular refrigerators 19 include three-stage blower 12, three grades of regenerators 13 of 11, three grades of coolers,
5, three grades of cool end heat exchangers 18 of centrifugal screw type runner, tertiary vein pipe 16, three grades of inertia tubes 15 of 17, three grades of hot end heat exchangers,
Three grades of air reservoirs 14;Wherein three-stage blower 11 outlet connects three grades of cooler 12 entrances, and three grades of cooler 12 outlets connect three grades
Regenerator 13 hot junction, three grades of cold ends of regenerator 13 connect three grades of cool end heat exchanger 18 first ends, three grades of cool end heat exchangers 18 second
End connects tertiary vein pipe 17 entrance, and tertiary vein pipe 17 outlet connects three grades of hot end heat exchanger 16 first ends, three grades of hot end heat exchangers
16 second ends connect three grades of air reservoirs 14 by three grades of inertia tubes 15；Above-mentioned one-level regenerator 3 exports, one-level vascular 6 entrance, three grades
The middle part of 13, two grades of regenerators 22 of regenerator is consecutively connected to together by the first heat bridge 4-1；Secondary vein pipe 23 entrance, two grades
Regenerator 22 exports, three grades of regenerators 13, tertiary vein pipe 17 export, three grades of hot end heat exchanger 16 first ends are by the second heat bridge 4-
2 are consecutively connected to together；
The described back-heating type stirling-type vascular refrigerator third level adds centrifugal screw type regenerator, when fluid from
During regenerator hot junction flow to cold end, in regenerator, the flow area of working fluid helium is gradually reduced, and fluid velocity increases,
Fluid pressure drop is low, so that the character of fluid is closer to ideal gas, reduces owing to helium working medium deviates ideal gas characteristic
The regenerator loss caused；When fluid is back to regenerator from vascular, fluid is through centrifugal screw type runner, in regenerator
The flow area of working fluid helium is gradually increased, and fluid velocity reduces, and pressure is gradually increased, along the cold end of regenerator to direction, hot junction
Form the barometric gradient that is gradually increased so that regenerator cold end working medium is in lower pressure environment, and screw type regenerator hot junction working medium
It is under relative high pressure, is more conducive to the refrigeration effect improving working medium at respective warm area, thus improves the refrigeration of refrigeration machine
Efficiency.
Shown in Fig. 2, centrifugal screw type regenerator is spiraled by gradually reducing pipeline and forms.Fluid is because of the change of the sectional area of pipeline
Change flow velocity and volume ratio.Compared to two dimension gradual shrinkage regenerator, the circulation area change of centrifugal screw type regenerator runner
Milder, the beneficially laminarization of fluid.
Shown in Fig. 3, working medium helium-3 and helium-4 real gas enthalpy stream QUOTE Ratio with cold end PV merit
Change along with pressure.Under normal circumstances QUOTE I.e. relevant to pressure term enthalpy stream is as reality
The criterion of gas loss.In the leading loss that this loss of below 20K warm area is 4K warm area regenerator.At lower pressure
Under, working medium character is close to ideal gas, and the real gas loss of refrigeration machine is little, is conducive to improving refrigerating efficiency.By using
Centrifugal screw type regenerator, it is possible to significantly reduce the working medium helium pressure at below 20K warm area.
The concrete implementation of the present invention is: this low temperature back-heating type vascular refrigerator is three grades of thermal coupling type structures, low
Under temperature, gas circuits at different levels do not interfere with each other.These structural parameters are clear, step-by-step optimization, definitiveness are good.Three fraction of this vascular refrigerator
Not using three compressors to drive gas, a two stage cooler gives three grades to provide pre-cooling.When the fluid in three grades of regenerators enters
Centrifugal screw type regenerator, in regenerator, the flow area of working fluid helium is gradually reduced, and fluid velocity increases, pressure drop
Low, so that the character of fluid is closer to ideal gas, reduce the backheat caused due to helium working medium deviation ideal gas characteristic
Device loses；When fluid is back to regenerator from vascular, fluid is through centrifugal screw type runner, working fluid helium in regenerator
Flow area be gradually increased, fluid air flow speed reduce, pressure is gradually increased.Along screw type regenerator hot junction to cold extreme direction
Form the barometric gradient being gradually reduced so that regenerator cold end working medium is in lower pressure environment, reduce real gas loss, and return
Hot device screw type runner hot junction working medium is under relative high pressure, is more conducive to the refrigeration effect improving working medium at respective warm area,
Thus improve the refrigerating efficiency of low temperature philip refrigerator.
After this refrigeration machine installs centrifugal screw type runner additional, retaining that simple in construction, reliability be high, that cryogenic temperature is low is excellent
Simultaneously, refrigerating efficiency is improved point, for preferably improving vascular refrigerator important in inhibiting.
Claims (2)
1. have employed a 4K Cryo Refrigerator for centrifugal screw type regenerator, including one-level back-heating type vascular refrigerator
(10), two grades of back-heating type vascular refrigerators (27), three grades of back-heating type vascular refrigerators (19), heat bridges (4)；
Wherein one-level back-heating type vascular refrigerator (10) includes stage compressor (1), one-level cooler (2), one-level regenerator
(3), one-level vascular (6), one-level hot end heat exchanger (7), one-level inertia tube (8), one-level air reservoir (9);Wherein stage compressor (1)
Outlet be connected with the entrance of one-level cooler (2), the outlet of one-level cooler (2) again with the entrance phase of one-level regenerator (3)
Even, the outlet of one-level vascular (6) connects one-level hot end heat exchanger (7) first end, and one-level hot end heat exchanger (7) second end is through one
Level inertia tube (8) connects one-level air reservoir (9)；
Wherein two grades of back-heating type vascular refrigerators (27) include split-compressor (20), secondary coolers (21), two grades of regenerators
(22), secondary vein pipe (23), two grades of hot end heat exchangers (24), two grades of inertia tubes (25), two grades of air reservoirs (26);Wherein two-stage compression
Machine (20) outlet connects secondary coolers (21) entrance, and secondary coolers (21) exports and connects two grades of regenerator (22) entrances, and two
Level vascular (23) outlet connects two grades of hot end heat exchanger (24) first ends, and two grades of hot end heat exchanger (24) second ends are used to through two grades
Property pipe (25) connect two grades of air reservoirs (26)；
Wherein three grades of back-heating type vascular refrigerators (19) include three-stage blower (11), three grades of coolers (12), three grades of regenerators
(13), centrifugal screw type runner (5), three grades of cool end heat exchangers (18), tertiary vein pipe (17), three grades of hot end heat exchangers (16),
Three grades of inertia tubes (15), three grades of air reservoirs (14);Wherein three grades of cooler (12) entrances of three-stage blower (11) outlet connection, three grades
Cooler (12) outlet connects three grades of regenerator (13) hot junctions, and three grades of cold ends of regenerator (13) connect three grades of cool end heat exchangers (18)
First end, three grades of cool end heat exchanger (18) second ends connect tertiary vein pipe (17) entrance, and tertiary vein pipe (17) outlet connects three grades
Hot end heat exchanger (16) first end, three grades of hot end heat exchanger (16) second ends connect three grades of air reservoirs by three grades of inertia tubes (15)
(14)；In the outlet of above-mentioned one-level regenerator (3), one-level vascular (6) entrance, three grades of regenerators (13), two grades of regenerators (22)
Portion is consecutively connected to together by the first heat bridge (4-1)；Secondary vein pipe (23) entrance, the outlet of two grades of regenerators (22), three grades return
The outlet of hot device (13), tertiary vein pipe (17), three grades of hot end heat exchanger (16) first ends are consecutively connected to by the second heat bridge (4-2)
Together；
It is characterized in that:
Three grades of regenerators (13) add centrifugal screw type runner (5), the most centrifugal screw type less than 20K warm area position
Runner (5) hot junction is connected with three grades of cold ends of regenerator (13), the cold end of centrifugal screw type runner (5) and three grades of cool end heat exchangers
(18) first ends connect；Centrifugal helical flow path (5) is gradually reduced from hot junction to its radius of spin of cold end, and its effect is to make work
Make in the character of fluid helium of this warm area closer to ideal gas.
The refrigerating method of the 4K warm area Cryo Refrigerator of employing the most according to claim 1 centrifugal screw type regenerator,
It is characterized in that including procedure below:
After the process of refrigerastion of the first order is stage compressor (1) compressed gas, makes gas enter one-level cooler (2) cooling, connect
After gas entrance one-level regenerator (3) cooling further, enter one-level vascular (6)；Gas contracts one-level vascular (6) is intrinsic pressure
Reflux after heat is discharged by one-level hot end heat exchanger (7), reflux course expands cooling, absorbs the heat from heat bridge (4)
Load；One-level inertia tube (8) and one-level air reservoir (9) are to gas phase modulation；Rely on the thermal coupling of heat bridge (4-1), one-level back-heating type arteries and veins
Control cold (10) carries out pre-cooling to two grades of back-heating type vascular refrigerators (27) and three grades of back-heating type vascular refrigerators (19), two grades
Back-heating type vascular refrigerator (27) carries out pre-cooling to three grades of back-heating type vascular refrigerators (19)；
After the process of refrigerastion of the second level is split-compressor (20) compressed gas, gas is made to enter secondary coolers (21) cooling,
Then, after gas enters the cooling further of two grades of regenerators (22), secondary vein pipe (23) is entered；Gas is in secondary vein pipe (23)
Heat also is passed through to reflux after two grades of hot end heat exchangers (24) are discharged by compression, expands cooling in reflux course, and absorption is from heat bridge
(4-2) thermic load；Two grades of inertia tubes (25) and two grades of air reservoirs (26) are to gas phase modulation；The thermal coupling of dependence heat bridge (4-2), two
Level back-heating type vascular refrigerator (27) is to the pre-cooling of three grades of back-heating type vascular refrigerators (19)；
After the process of refrigerastion of the third level is three-stage blower (11) compressed gas, gas is made to enter three grades of cooler (12) coolings,
Then, after gas enters the cooling further of three grades of regenerators (13), tertiary vein pipe (17) is entered；Gas is in tertiary vein pipe (17)
Heat also is passed through to reflux after three grades of hot end heat exchangers (24) are discharged by compression, expands cooling in reflux course, and absorption is from three grades
The thermic load of cool end heat exchanger (18)；Three grades of inertia tubes (15) and three grades of air reservoirs (14) are to gas phase modulation；Third level regenerator is cold
The internal copper mesh that is filled with of end ensures heat exchange and the laminarization of the helium working medium from the outflow of screw type runner, and screw type runner makes work
Make in the character of fluid helium of this warm area closer to ideal gas.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410523678.8A CN104296411B (en) | 2014-10-08 | 2014-10-08 | Use 4K low temperature pulse tubes refrigeration machine and the method for centrifugal screw type regenerator |
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| CN201410523678.8A CN104296411B (en) | 2014-10-08 | 2014-10-08 | Use 4K low temperature pulse tubes refrigeration machine and the method for centrifugal screw type regenerator |
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| CN106091463A (en) * | 2016-05-09 | 2016-11-09 | 南京航空航天大学 | 4K thermal coupling regenerating type low-temperature refrigerator based on controlled heat pipe and refrigerating method thereof |
| CN106313520A (en) * | 2016-08-31 | 2017-01-11 | 河北永昌车辆部件科技有限公司 | Coated seal strip and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE3148426C2 (en) * | 1981-12-08 | 1984-01-26 | Messerschmitt-Bölkow-Blohm GmbH, 8000 München | Extraction device for cold gas |
| DE19501035A1 (en) * | 1995-01-16 | 1996-07-18 | Bayer Ag | Stirling engine with heat transfer injection |
| CN101852506A (en) * | 2010-05-14 | 2010-10-06 | 南京柯德超低温技术有限公司 | Implementation method of pulse tube refrigerator capable of being installed and used at any angle, and device thereof |
| CN102331105B (en) * | 2011-09-23 | 2013-06-19 | 浙江大学 | Pulse tube refrigerator with precooling pulse tube |
| CN202928220U (en) * | 2012-11-28 | 2013-05-08 | 浙江大学 | Deep low temperature heat regenerator adopting carbon nanometer heat regeneration filling materials and pulse pipe refrigerating machine of deep low temperature heat regenerator |
| CN103994597B (en) * | 2014-05-27 | 2016-05-18 | 南京航空航天大学 | Adopt 4K regenerating type low-temperature refrigerator and the refrigerating method of supersonic atomizer |
| CN204141881U (en) * | 2014-10-08 | 2015-02-04 | 南京航空航天大学 | Adopt the 4K low temperature pulse tubes refrigeration machine of centrifugal screw type regenerator |
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