CN103868270B - Multi-path bypass type coaxial pulse tube refrigerator capable of solving gas leakage problem at pulse tube connection part - Google Patents
Multi-path bypass type coaxial pulse tube refrigerator capable of solving gas leakage problem at pulse tube connection part Download PDFInfo
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- CN103868270B CN103868270B CN201210540058.6A CN201210540058A CN103868270B CN 103868270 B CN103868270 B CN 103868270B CN 201210540058 A CN201210540058 A CN 201210540058A CN 103868270 B CN103868270 B CN 103868270B
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- vascular
- channel shunt
- junction
- leakage problem
- tube refrigerator
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- 230000002792 vascular Effects 0.000 claims description 89
- 238000007789 sealing Methods 0.000 claims description 14
- 238000005476 soldering Methods 0.000 claims description 10
- 238000003466 welding Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 238000005057 refrigeration Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000012360 testing method 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
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/14—Compression machines, plants or systems characterised by the cycle used
- F25B2309/1406—Pulse-tube cycles with pulse tube in co-axial or concentric geometrical arrangements
Landscapes
- Containers, Films, And Cooling For Superconductive Devices (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
Abstract
The invention relates to the technical field of refrigeration and low temperature, in particular to a multi-path bypass type coaxial pulse tube refrigerator capable of solving the problem of gas leakage at a pulse tube joint.
Description
Technical field
The present invention relates to Refrigeration & Cryogenic Technique field, particularly relate to a kind of multi-channel shunt type coaxial pulse-tube refrigerator that can solve vascular junction leakage problem.
Background technology
The multi-channel shunt scheme that Zhou Yuan etc. propose is the effective way that pulse tube refrigerating machine obtains more low temperature, inner to pulse tube by directly introducing or draw one air-flow from regenerator stage casing, effectively can improve the performance of pulse tube refrigerating machine.Multi-channel shunt scheme is easier to realize at the pulse tube refrigerating machine ratio of coaxial configuration form, only needs can realize in pulse tube specific position punching.Conventional method the multi-channel shunt made at a copper material or other material in advance bores the aperture of some, and then multi-channel shunt two connects respectively at pulse tube, and pulse tube is directly inserted in multi-channel shunt.Owing to expanding with heat and contract with cold, multi-channel shunt and pulse tube good seal at normal temperatures, after refrigerator temperature reduces, there is distortion in junction, or due to the restriction of machining accuracy, also may be that light-wall pipe itself exists distortion, cause pulse tube port not circle, in addition, in repeated disassembled and assembled process, originally desirable cooperation also there will be problem, these various possible factors all can cause the cooperation between multi-channel shunt and pulse tube can there is certain gap, therefore, after processing multi-channel shunt hole according to designing requirement, due to the gap existed between multi-channel shunt and pulse tube, during refrigerator operation, Working medium gas not only can flow to outflow from the multi-channel shunt hole processed, outflow is flow to the gap that also can coordinate from this, also namely the aperture of multi-channel shunt is in fact large than the aperture of original design, cause refrigeration machine effect off-design result.Because this gap is all unexpected developers, so when departing from appears in experimental result, easily cause the puzzlement of developers, can not find the place of problem, have influence on the progress of development.In addition, because the size in these gaps also exists randomness, also easily cause the nonrepeatability of testing.
The bidirection air intake scheme that the nineties, Zhu Shaowei proposed also is improve an effective way of pulse tube refrigerating machine, and by before regenerator, the gas of a first bypass part directly enters the efficiency that pulse tube refrigerating machine is improved in pulse tube inside.Be similar to the connectivity problem of pulse tube above-mentioned and multi-channel shunt, the connection in pulse tube and hot junction also also exists the problem of fit clearance.The two-way aperture that this random gap length also can make two-way opening ratio during actual motion design is large, thus causes a series of problem.
Summary of the invention
(1) technical problem that will solve
The technical problem to be solved in the present invention is to provide a kind of refrigeration performance improving co-axial pulse tube refrigerator, improve the repeatability of experiment, reduce the multi-channel shunt type coaxial pulse-tube refrigerator that can solve vascular junction leakage problem of the degree of difficulty in development process.
(2) technical scheme
For reaching above-mentioned purpose, the multi-channel shunt type coaxial pulse-tube refrigerator that can solve vascular junction leakage problem of the present invention comprises hot junction, vascular, the regenerator of tubulose, pressure wave generator and air reservoir; Described vascular and described regenerator are coaxial, and described vascular is connected with described regenerator the same side with described hot junction, and described regenerator passes through described hot junction and is communicated with described pressure wave generator, and described vascular passes through described hot junction and is communicated with described air reservoir; The junction in described vascular and described hot junction is by sealing ring side seal; The free end of described vascular and the free end of described regenerator communicate.
Preferably, described hot junction is flange, its cannelure being provided with central through hole and axially being extended to form by flange periphery, and the junction of the middle through-hole in described vascular and described hot junction is by sealing ring side seal; Described regenerator is communicated with described pressure wave generator by the cannelure in described hot junction.
Preferably, described sealing ring is O type rubber seal.
Preferably, described vascular comprises the first vascular and the second vascular, and described first vascular is communicated with the multi-channel shunt of the second vascular by tubulose; The middle part sidewall of described multi-channel shunt has several through holes, and described first vascular is communicated with in the middle part of regenerator by described through hole with the second vascular.
Preferably, described first vascular welds with described multi-channel shunt one end.
Preferably, described second pulse tube welds with the described multi-channel shunt other end.
Preferably, described welding manner is soldering, silver soldering or soldering.
In addition, described first vascular, the second vascular and multi-channel shunt can be integral structure.
Alternative, described first vascular can also be connected by cohesive material with described multi-channel shunt one end.
Described second pulse tube is connected by cohesive material with the described multi-channel shunt other end.
(3) beneficial effect
The refrigeration machine that the present invention adopts technique scheme to provide, vascular and hot junction are sealed by sealing ring, vascular and multi-channel shunt welding, the leakage problem of vascular refrigerator vascular junction is well solved, the aperture of multi-channel shunt and bidirection air intake is optimized difficulty and can be reduced, and then the development difficulty of vascular refrigerator can be reduced, accelerate its Development Schedule, and improve the repeatability of experiment.
Accompanying drawing explanation
Fig. 1 is the structure chart one that the present invention can solve the multi-channel shunt type coaxial pulse-tube refrigerator of vascular junction leakage problem;
Fig. 2 is the structure chart two that the present invention can solve the multi-channel shunt type coaxial pulse-tube refrigerator of vascular junction leakage problem.
In figure, 1: hot junction; 2: the first pulse tubes; 3: the first regenerators; 4: multi-channel shunt; 5: the second regenerators; 6: the second pulse tubes; 7: the second welds; 8: the first welds; 9: sealing ring; 10: hot junction flange; 11: air inlet pipe; 12: pressure wave generator; 13: hot junction flow-guiding screen; 14: air reservoir; 15: inertia tube.
Detailed description of the invention
Below in conjunction with drawings and Examples, the multi-channel shunt type coaxial pulse-tube refrigerator that the present invention can solve vascular junction leakage problem is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
In describing the invention, it should be noted that, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.In addition, term " first ", " second ", " the 3rd " only for describing object, and can not be interpreted as instruction or hint relative importance.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
In addition, in describing the invention, except as otherwise noted, the implication of " multiple " is two or more.
As shown in Figure 1 or 2, the multi-channel shunt type coaxial pulse-tube refrigerator that can solve vascular junction leakage problem of the present invention comprises hot junction 1, vascular, the regenerator of tubulose, pressure wave generator 12 and air reservoir 14.Vascular and regenerator are coaxial, and vascular is connected with regenerator the same side with hot junction 1, and regenerator is communicated with pressure wave generator 12 by hot junction 1, and vascular is communicated with air reservoir 14 by hot junction 1.The junction in vascular and hot junction is by sealing ring 9 side seal.The free end of vascular and the free end of regenerator communicate.Hot junction 1 is flange, and it is provided with central through hole and cannelure, and this cannelure can be the cannelure (see Fig. 1) axially extended to form by flange periphery, or the cannelure (see Fig. 2) being coordinated with hot junction flange 10 by hot junction 1 and formed.The junction of the middle through-hole in vascular and hot junction 1 is by sealing ring 9 side seal, and further, air reservoir 14 is communicated with inertia tube 15, and vascular is communicated with inertia tube 15 by the hot junction flow-guiding screen 13 be located in the central through hole in hot junction 1.Regenerator is communicated with the air inlet pipe 11 of Bonding pressure wave producer 12 by the cannelure in hot junction 1, and pressure generator can be compressor.Wherein, regenerator can be monolithic construction, also can be the split-type structural comprising the first regenerator 3 and the second regenerator 5 be interconnected.
Hot junction 1 processes seal groove, the size of neglecting greatly sealing ring 9 of seal groove and determining.Sealing ring 9 can adopt the O type rubber seal of standard, also can adopt the sealing ring of other type off-gauge.The cooperation of vascular external diameter and hot junction 1 endoporus can be matched in clearance, also can be interference fits.The length that vascular is inserted into hot junction 1 endoporus is 1-20mm.Sealing ring 9 can be applied on multi-channel shunt type pulse tube refrigerating machine, also can be applied on the pulse tube refrigerating machine of other coaxial type.
Vascular comprises the first vascular 2 and the second vascular 6 be interconnected, first vascular 2 and the second vascular 6 are welded in multi-channel shunt 4 two ends of tubulose respectively, wherein, after first vascular 2 is inserted the 0-20mm degree of depth to multi-channel shunt 4, the mode of soldering is adopted to carry out welding formation first weld 8 to its junction, after second vascular 6 is inserted the 0-20mm degree of depth to multi-channel shunt 4, the mode of soldering is adopted to carry out welding formation second weld 7 to its junction.The mode of welding also can adopt silver soldering, soldering or other welding manner.The cooperation of the first vascular 2 external diameter and multi-channel shunt 4 endoporus, the second vascular 6 external diameter and multi-channel shunt 4 endoporus can be matched in clearance, also can be interference fits or interference fit.The middle part sidewall of multi-channel shunt 4 has several through holes, and the first vascular 2 is communicated with in the middle part of regenerator by through hole with the second vascular 6.
In addition, the sticky stuff such as glue or epoxy resin can be adopted to bond to vascular and hot junction or vascular and multi-channel shunt, or directly vascular and multi-channel shunt are made of one formula structure.
The multi-channel shunt type coaxial pulse-tube refrigerator course of work that can solve vascular junction leakage problem of the present invention is as follows: after first compressed air is pressed into the cannelure in hot junction 1 by pressure generator 12 by air inlet pipe 11, compressed air is shunted after entering the first regenerator 3, part compressed air enters the second vascular 6 through the free end of the second regenerator 5, then the first vascular 2 is entered through the inner passage of multi-channel shunt 4, another part compressed air several through holes in the middle part of multi-channel shunt 4 on sidewall enter the first vascular 2, two parts compressed air enters air reservoir through hot junction flow-guiding screen 13 after converging in the first vascular 2.
Above embodiment is only for illustration of the present invention, and be not limitation of the present invention, the those of ordinary skill of relevant technical field, without departing from the spirit and scope of the present invention, can also make a variety of changes and modification, therefore all equivalent technical schemes also belong to category of the present invention.
Claims (9)
1. can solve a multi-channel shunt type coaxial pulse-tube refrigerator for vascular junction leakage problem, it is characterized in that: described multi-channel shunt type coaxial pulse-tube refrigerator comprises hot junction (1), vascular, the regenerator of tubulose, pressure wave generator (12) and air reservoir (14); Described vascular and described regenerator coaxial, and described vascular is connected with described regenerator the same side with described hot junction (1), described regenerator is communicated with described pressure wave generator (12) by described hot junction (1), and described vascular is communicated with described air reservoir (14) by described hot junction (1); The junction in described vascular and described hot junction is by sealing ring (9) side seal; The free end of described vascular and the free end of described regenerator communicate;
Described hot junction (1) is flange, its cannelure being provided with central through hole and axially being extended to form by flange periphery, and the junction of the central through hole of described vascular and described hot junction (1) is by sealing ring (9) side seal; Described regenerator is communicated with described pressure wave generator (12) by the cannelure in described hot junction (1).
2. the multi-channel shunt type coaxial pulse-tube refrigerator that can solve vascular junction leakage problem according to claim 1, is characterized in that: described sealing ring (9) is O type rubber seal.
3. the multi-channel shunt type coaxial pulse-tube refrigerator that can solve vascular junction leakage problem according to any one of claim 1-2, it is characterized in that: described vascular comprises the first vascular (2) and the second vascular (6), described first vascular (2) is communicated with the multi-channel shunt (4) of the second vascular (6) by tubulose; The middle part sidewall of described multi-channel shunt (4) has several through holes, and described first vascular (2) is communicated with in the middle part of regenerator by described through hole with the second vascular (6).
4. the multi-channel shunt type coaxial pulse-tube refrigerator that can solve vascular junction leakage problem according to claim 3, is characterized in that: described first vascular (2) is welded with described multi-channel shunt (4) one end.
5. the multi-channel shunt type coaxial pulse-tube refrigerator that can solve vascular junction leakage problem according to claim 4, is characterized in that: described second vascular (6) is welded with described multi-channel shunt (4) other end.
6. the multi-channel shunt type coaxial pulse-tube refrigerator that can solve vascular junction leakage problem according to claim 5, is characterized in that: the mode of described welding is soldering, silver soldering or soldering.
7. the multi-channel shunt type coaxial pulse-tube refrigerator that can solve vascular junction leakage problem according to claim 3, is characterized in that: described first vascular (2), the second vascular (6) are integral type structure with multi-channel shunt (4).
8. the multi-channel shunt type coaxial pulse-tube refrigerator that can solve vascular junction leakage problem according to claim 3, is characterized in that: described first vascular (2) is connected by cohesive material with described multi-channel shunt (4) one end.
9. the multi-channel shunt type coaxial pulse-tube refrigerator that can solve vascular junction leakage problem according to claim 8, is characterized in that: described second vascular (6) is connected by cohesive material with described multi-channel shunt (4) other end.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210540058.6A CN103868270B (en) | 2012-12-13 | 2012-12-13 | Multi-path bypass type coaxial pulse tube refrigerator capable of solving gas leakage problem at pulse tube connection part |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210540058.6A CN103868270B (en) | 2012-12-13 | 2012-12-13 | Multi-path bypass type coaxial pulse tube refrigerator capable of solving gas leakage problem at pulse tube connection part |
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| CN103868270A CN103868270A (en) | 2014-06-18 |
| CN103868270B true CN103868270B (en) | 2016-02-10 |
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| CN201210540058.6A Active CN103868270B (en) | 2012-12-13 | 2012-12-13 | Multi-path bypass type coaxial pulse tube refrigerator capable of solving gas leakage problem at pulse tube connection part |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807233A (en) * | 2015-03-30 | 2015-07-29 | 中国科学院理化技术研究所 | Gas coupling type high-frequency pulse tube refrigerator |
| CN105115182B (en) * | 2015-09-25 | 2018-08-14 | 中国科学院上海技术物理研究所 | Using the single stage coaxial pulse tube refrigerating device and its design method of annular vascular structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1098192A (en) * | 1993-05-16 | 1995-02-01 | 朱绍伟 | Rotary vascular refrigerator |
| CN1150639A (en) * | 1995-11-21 | 1997-05-28 | 中国科学院低温技术实验中心 | Coaxial vessel refrigerator |
| CN1388344A (en) * | 2002-07-09 | 2003-01-01 | 西安交通大学 | Space cryogenic refrigerator with combined radiation refrigeration and pulse tube refrigeration |
| CN1467461A (en) * | 2002-07-09 | 2004-01-14 | 中国科学院理化技术研究所 | Non-magnetic low-vibration coaxial pulse tube refrigerator |
| CN101469924A (en) * | 2007-12-28 | 2009-07-01 | 中国航天科技集团公司第五研究院第五一〇研究所 | Eyelet phase modulation apparatus of pulse tube refrigerator |
-
2012
- 2012-12-13 CN CN201210540058.6A patent/CN103868270B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1098192A (en) * | 1993-05-16 | 1995-02-01 | 朱绍伟 | Rotary vascular refrigerator |
| CN1150639A (en) * | 1995-11-21 | 1997-05-28 | 中国科学院低温技术实验中心 | Coaxial vessel refrigerator |
| CN1388344A (en) * | 2002-07-09 | 2003-01-01 | 西安交通大学 | Space cryogenic refrigerator with combined radiation refrigeration and pulse tube refrigeration |
| CN1467461A (en) * | 2002-07-09 | 2004-01-14 | 中国科学院理化技术研究所 | Non-magnetic low-vibration coaxial pulse tube refrigerator |
| CN101469924A (en) * | 2007-12-28 | 2009-07-01 | 中国航天科技集团公司第五研究院第五一〇研究所 | Eyelet phase modulation apparatus of pulse tube refrigerator |
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| CN103868270A (en) | 2014-06-18 |
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