CN104534717A - U-shaped pulse tube refrigerator cooling high-temperature superconducting filter structure and manufacturing method - Google Patents

U-shaped pulse tube refrigerator cooling high-temperature superconducting filter structure and manufacturing method Download PDF

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Publication number
CN104534717A
CN104534717A CN201410748014.1A CN201410748014A CN104534717A CN 104534717 A CN104534717 A CN 104534717A CN 201410748014 A CN201410748014 A CN 201410748014A CN 104534717 A CN104534717 A CN 104534717A
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China
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pulse tube
hot
shaped
heat dissipation
cold head
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Chinese (zh)
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党海政
宋宇尧
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Shanghai Institute of Technical Physics of CAS
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Shanghai Institute of Technical Physics of CAS
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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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P11/00—Apparatus or processes specially adapted for manufacturing waveguides or resonators, lines, or other devices of the waveguide type
    • H01P11/007—Manufacturing frequency-selective devices
    • 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
    • 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 
    • F25B2309/1409—Pulse-tube cycles with pulse tube having special type of geometrical arrangements not being a coaxial, in-line or U-turn type
    • 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
    • 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 
    • F25B2309/1414—Pulse-tube cycles characterised by pulse tube details
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/12—Sound
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/18—Optimization, e.g. high integration of refrigeration components

Abstract

The invention discloses a U-shaped pulse tube refrigerator cooling high-temperature superconducting filter structure and a manufacturing method. The structure comprises a U-shaped cold head, a hot end radiating support platform, a cylinder Dewar, a high-reflection screen, an anti-radiation screen, a thin frame structure and an equipment box. A pulse tube refrigerator is high in reliability and long in service life, moving components at a cold end are omitted, and the influence of cold end moving vibration on high-temperature superconducting filter signal transmission is eliminated. By making full use of structural characteristics of the U-shaped pulse tube refrigerator, the structure is conveniently coupled with a high-temperature superconducting filter, and a stable, reliable, low-noise, low-vibration and low-temperature cold source can be provided for the high-temperature superconducting filter. The structure has positive significance for further popularization and application of the high-temperature superconducting filter and practicability of the U-shaped pulse tube refrigerator in fields such as mobile communication.

Description

The structure of U-shaped pulse tube refrigerating machine cooling high-temperature superconducting wave filter and manufacture method
Technical field
Technical field of the present invention relates to refrigeration & cryogenic engineering field, superconduction engineering field and communication engineering field, relate to pulse tube refrigerating machine and high temperature superconduction wave filter, particularly a kind of structure of U-shaped pulse tube refrigerating machine cooling high-temperature superconducting wave filter and manufacture method.
Background technology
High temperature superconductor technology is as one of swift and violent cutting edge technology of development in recent years, be applied to moving communicating field, there is many advantages, the particularly high temperature superconduction wave filter made of high temperature superconducting materia, compared with the wave filter of routine, the loss of its passband is little, and stopband suppresses large, sideband is precipitous, can be made into narrow-band filter, volume is little, quality is light.Be applied to civilian moving communicating field, high temperature superconduction wave filter can significantly improve mobile base station selective, sensitivity and information transfer rate, raising speech quality, increase traffic capacity, expand base station coverage area, strengthen base station antijamming capability, reduce mobile phone transmission power.Along with high temperature superconduction wave filter is theoretical and the maturation of manufacturing process, and the fast development in the world of mobile communication industry, high temperature superconduction wave filter is expected to for revolutionary change is brought in global mobile communication field.
Mobile base station high temperature superconduction wave filter best effort environment temperature is 60 ~ 80K, at present at this warm area, small-sized cryogenic mechanical refrigeration machine is as low-temperature receiver, the requirement of high temperature superconduction wave filter cold can well be met, consider the external working environment of high temperature superconduction wave filter, except cold requires, refrigeration machine is also needed to have the features such as stable, efficient, low interference, long-life, small size, light weight.At present, domestic and international mobile base station high temperature superconduction wave filter product adopts sterlin refrigerator as low temperature cold source mostly, but because the moving components such as sterlin refrigerator cold head end displacer can bring mechanical oscillation and electromagnetic interference signal, there is considerable influence to the work output signal of high temperature superconduction wave filter.And the reliability of sterlin refrigerator and working life are also the larger bottlenecks affecting its service behaviour.
The pulse tube refrigerating machine come into operation after the eighties in 20th century is a significant innovation to regenerating type low-temperature refrigerator, compared with other small-sized regenerating type low-temperature refrigerators especially sterlin refrigerator, which eliminate cold junction displacer, phase adjusted is completed by passive phase modulating mechanism, therefore at cold junction movement-less part, achieve the low vibration of cold junction, low interference and without wearing and tearing, and the improvement on phase modulation frame mode, at some typical warm areas as 60 ~ 80K warm area, its efficiency has reached the peak in regenerating type low-temperature refrigerator.Therefore, pulse tube refrigerating machine has the plurality of advantages such as cold is large, efficiency is high, the vibration of cold junction mechanical, reliability is high, life expectancy is long.
Pulse tube refrigerating machine has three kinds of typical arrangements according to pulse tube from the different of regenerator relative position, and as shown in Figure 1, wherein (a) is linear pattern, and (b), for U-shaped, (c) is coaxial type.The pulse tube refrigerating machine of three kinds of patterns is by primary structure compositions such as compressor 1, connecting leg 2, regenerator 3, pulse tube 4, phase modulation structure 5 and air reservoirs 6.In linear pattern layout, pulse tube 4 and regenerator 3 are in straight line, and in U-shaped layout, pulse tube 4 and regenerator 3 are parallel to each other, and in coaxial type layout, pulse tube 4 inserts regenerator 3 with one heart.In three kinds of patterns, coaxial type structure is the compactest, but because refrigerating device inner gas working medium needs are in cold junction folding turnback, can cause larger drag losses and flow perturbation, and because the temperature of regenerator 3 and pulse tube 4 is not mated, inevitably bring loss of refrigeration capacity; During linear pattern is arranged, air-flow does not need to turn back, gas flow resistance can be reduced to greatest extent, most effective in three kinds of arrangements, but its cold junction is between regenerator 3 and pulse tube 4, cold finger entirety is longer, makes cold extract inconvenience, with device couples difficulty, it is the key factor that restriction linear pattern is applied further.
As seen from Figure 1, in three kinds of exemplary configurations modes of vascular refrigerator, U-shaped structure is the same with coaxial type structure, and cold junction is in one end, with device be coupled more for convenience, relative to linear pattern arrange for structure comparatively compact.And regenerator does not directly contact with pulse tube, avoid regenerator and pulse tube Temperature Distribution in coaxial type structure and do not mate the loss of refrigeration capacity brought.Therefore the refrigerating efficiency of U-shaped structure is higher than coaxial type relatively, and compared with linear pattern arrangement more compact and more convenient and device couples, thus can make full use of the advantage of U-shaped pulse tube refrigerating machine, make it for the cooling of high temperature superconduction wave filter.
Summary of the invention
In view of the feature of high temperature superconduction wave filter and U-shaped pulse tube refrigerating machine, the present invention proposes a kind of structure and the manufacture method that utilize U-shaped pulse tube refrigerating machine cooling high-temperature superconducting wave filter, object is, make full use of that U-shaped pulse tube refrigerating machine is high in 60 ~ 80K warm area efficiency, cold is large, be easy to the advantages such as device couples, for high temperature superconduction wave filter provides reliable and stable low temperature cold source.
The structure of the U-shaped pulse tube refrigerating machine cooling high-temperature superconducting wave filter invented as shown in Figure 2, be made up of U-shaped cold head 8, hot-side heat dissipation support platform 7, cylinder Dewar 9, high reverse--bias screen 11, protective shield of radiation 12, thin frame structure 13, equipment box 21, its feature is as follows:
The cold finger of U-shaped pulse tube refrigerating machine is made up of regenerator 3, pulse tube 4, phase modulating mechanism 5, air reservoir 6, hot-side heat dissipation support platform 7, U-shaped cold head 8, and compressor 1 is coupled with cold finger by connecting leg 2 and forms U-shaped pulse tube refrigerating machine; The regenerator hot-side heat dissipation of U-shaped pulse tube refrigerating machine and pulse tube hot-side heat dissipation become one by hot-side heat dissipation support platform 7, and are coupled with cylinder Dewar 9, support composition vacuum chamber; High temperature superconduction wave filter 10 is placed and is fixed on U-shaped cold head 8 working face, to be coupled with U-shaped pulse tube refrigerating machine; At U-shaped cold head 8 upper surface, high reverse--bias screen 11 and protective shield of radiation 12 are set, high temperature superconduction wave filter 10 and U-shaped cold head 8 are covered in wherein, hot-side heat dissipation support platform 7 is installed thin frame structure 13, thin frame structure 13 outside is wrapped with Multilayer radiation-proof material, regenerator 3 and pulse tube 4 surrounding are wrapped with Multilayer radiation-proof material respectively, cover in wherein by U-shaped pulse tube refrigerating machine cold finger; Cylinder Dewar 9 lower end and hot-side heat dissipation support platform 7 upper end fit, and utilize screw to be fastenedly connected, sealing ring seals; Cylinder Dewar 9 sidewall is provided with vacuum valve 14, for vacuumizing interface; High temperature superconduction wave filter 10 connects the sealed electrical connector 16 that is positioned in hot-side heat dissipation support platform 7 by signal transmission to outside vacuum chamber by coaxial cable 15, and by cable 17 by Signal transmissions to automatically controlled and signal pickup assembly 18; Automatically controlled and signal pickup assembly 18 carries out input and the control of power supply signal by holding wire 19 pairs of compressors 1, and cable 17 and holding wire 19 are fixed by wire harness apparatus 20; Integral device is positioned in equipment box 21.Automatically controlled and signal pickup assembly 18 is positioned on the right side of the electric control chamber below equipment box 21 baffle plate 22, has outside power supply and signaling interface in electric control chamber arranged outside; Above baffle plate 22, place U-shaped pulse tube refrigerating machine, the power house between baffle plate 22 and epipleural places compressor 1, utilizes compressor bracket 24 to be fixed; Compressor 1 lower end is positioned over cooling platform 25 upper end, and cooling platform 25 lower end is connected with air reservoir connector 26, and air reservoir connector 26 lower end connects air reservoir 6, and is positioned over baffle plate 22, utilizes fixed head 23 to be fixed; Air reservoir connector 26 has perforate towards the outer side of paper, facilitates U-shaped pulse pipe refrigerator hot end connecting leg 27 to pass through; Compressor 1 walked around by hot junction connecting leg 27, through air reservoir connector 26 perforate, is connected with phase modulation structure 5 and air reservoir 6; Equipment box 21 left side plate is provided with fan 28 and fence 29 respectively; Thus the common structure forming a kind of U-shaped pulse tube refrigerating machine cooling high-temperature superconducting wave filter.
The manufacture method of the U-shaped pulse tube refrigerating machine cooling high-temperature superconducting filter construction invented is as follows:
The high-purity oxygen-free copper that U-shaped cold head 8 adopts heat conductivility good is made, and is made up of regenerator end cold head 30, pulse pipe end cold head 31 and slit post 32; Regenerator end cold head 30 lower end utilizes Linear cut slow wire feeding to process the slit of the wide 0.02 ~ 0.15mm of 30-60 bar, forms slit pore 34, facilitates regenerator 3 to insert, have blind hole to facilitate slit post 32 left end to insert on the right side of regenerator end cold head 30; Adopt in pulse pipe end cold head 31 lower end Linear cut slow wire feeding processing slit to form slit pore 35, facilitate pulse tube 4 to insert; On the left of pulse pipe end cold head 32, car blind hole facilitates slit post 32 to insert; Slit post 32 is one section of cylindrical ladder section part, adopts Linear cut slow wire feeding processing slit 36 respectively at two ends, left and right; During installation, slit post 32 left end inserts regenerator end cold head 30, and right-hand member inserts pulse pipe end cold head 31, adopts the clean brazing mode of vacuum to be welded as a whole by three seal parts at 33 places; Finish turning U-shaped cold head 8 top surface plane degree is at below 0.10mm, and surface is coated with low temperature heat-conducting silicone grease, fits tightly with high temperature superconduction wave filter 10; Install high reverse--bias screen 11 with protective shield of radiation 12 in U-shaped cold head 8 upper surface, cover in wherein by high temperature superconduction wave filter 10 and U-shaped cold head 8, employing highly reflective material is made; It is several character form structures that high reverse--bias shields 11 cross sections, and two sidetracking apertures 37, facilitate passing through of coaxial cable 15, wall thickness 0.5 ~ 2.0mm; Four wall thickness 0.2 ~ 1.0mm of protective shield of radiation 12; Shield 11 limit, lower end platforms and protective shield of radiation 12 upper end Bian Tai at high reverse--bias to have got on the bus uniform through hole 38; High reverse--bias screen 11 and protective shield of radiation 12 inner surface blackening process, outer surface sanding and polishing; Uniform through hole 38 screw fastening is utilized to be connected to U-shaped cold head 8 upper surface; Thin frame structure 13 is the thin bar construction of bending of expoxy glass steel fibre by 3 ~ 10 root timber material, and be installed on hot-side heat dissipation support platform 7, outside is wrapped with Multilayer radiation-proof material, covers in wherein by U-shaped pulse tube refrigerating machine cold finger and high temperature superconduction wave filter 10; The overall rounded slab construction of hot-side heat dissipation support platform 7, lower end car boss 39, connecting leg 2 inserts boss 39 center hole, and the other end connects compressor 1, and hot junction connecting leg 27 inserts corresponding circle hole on the right side of lower end, and the other end connects phase modulation structure 5 and air reservoir 6; Hot-side heat dissipation support platform 7 upper end car boss 40; Utilize Linear cut slow wire feeding to process slit pore 41 and slit pore 42 respectively in hot-side heat dissipation support platform 7 upper end, regenerator 3 and pulse tube 4 insert regenerator end slit pore 41 and pulse pipe end slit pore 42 respectively; The uniform small boss 43 of hot-side heat dissipation support platform 7 upper surface car, is connected and fixed thin frame structure 13; Hot-side heat dissipation support platform 7 symmetry installs sealed electrical connector 16; Hot-side heat dissipation support platform 7 upper surface is coupled with cylinder Dewar 9, utilizes uniform through hole 44 to be fastenedly connected, utilize sealing ring to seal by screw; Hot-side heat dissipation support platform 7 cylindrical is installed on the center hole of equipment box 22 epipleural, and U-shaped pulse tube refrigerating machine cold finger and vacuum chamber are fixed; Baffle plate 22 and fixed head 23 support U-shaped pulse pipe refrigerator hot end air reservoir connector 26 makes U-shaped pulse tube refrigerating machine be fixed support; Baffle plate 22 is made up of two pieces of thin plates of symmetry, two pieces of symmetrical semi-circular ring-type fixing plate 23 symmetries is installed and utilizes screw to be fixed on baffle plate 22, baffle plate 22 liang of symmetrical members are connected in one; Equipment box 21 space is divided into power house and electric control chamber two parts by baffle plate 22 and fixed head 23, plays a supporting role to U-shaped pulse pipe refrigerator hot end.
The present invention has following features:
1) U-shaped pulse tube refrigerating machine cooling high-temperature superconducting wave filter is utilized, needed for high temperature superconduction wave filter, best effort warm area 60 ~ 80K warm area confronting coaxial type pulse tube refrigeration engine efficiency is high, cold is large to make full use of U-shaped pulse tube refrigerating machine, relative rectilinear type pulse tube refrigerating machine is easy to the advantages such as device couples, and the operation for high temperature superconduction wave filter provides reliable and stable low temperature cold source.
2) the working face platform of large area platform as high temperature superconduction wave filter of U-shaped cold head 8 is adopted, by finish turning platform end face, high temperature superconduction wave filter can be fitted tightly with U-shaped cold head, and scribble low temperature heat-conducting silicone grease between the two to strengthen cold conduction.
3) unique to high temperature superconduction wave filter employing radiation proof structure reduces the loss of refrigeration capacity that heat radiation causes, high reverse--bias screen 11 and the protective shield of radiation 12 of the process of inner blackout exterior finish is wherein provided with at U-shaped cold head 8 upper surface, thin frame structure 13 outer wrapping Multilayer radiation-proof material, U-shaped pulse tube refrigerating machine cold finger and high temperature superconduction wave filter 10 cover in wherein by these structures, provide radiation proof low-temperature working environment for high temperature superconduction wave filter.
4) hot-side heat dissipation support platform 7 and cylinder Dewar 9 form vacuum chamber, for high temperature superconduction wave filter provides the vacuum environment needed for work.Cylinder Dewar 9 sidewall is provided with vacuum valve 14, vaccum-pumping equipment can be utilized to keep vacuum 5.0 × 10 by vacuum valve 14 -6below Pa.
5) will be fixed in equipment box 21 with overall placement of the closely-coupled high temperature superconduction wave filter 10 of U-shaped pulse tube refrigerating machine, equipment box 21 serves permanent plant to U-shaped pulse tube refrigerating machine cooling high-temperature superconducting wave filter, is the effect such as equipment cooling, sealed in unit.
Pulse tube refrigerating machine reliability is high, long working life, and cold junction movement-less part, eliminate the impact of cold junction motion oscillations on high temperature superconduction wave filter Signal transmissions.The present invention takes full advantage of the design feature of U-shaped pulse tube refrigerating machine, achieves and is coupled with the convenient of high temperature superconduction wave filter, can be that high temperature superconduction wave filter provides reliable and stable, low noise, low vibration low temperature cold source.The present invention further applies high temperature superconduction wave filter and U-shaped pulse tube refrigerating machine has positive meaning in the practical of the fields such as mobile communication.
Accompanying drawing explanation
Fig. 1 is three kinds of method for arranging schematic diagrames of pulse tube refrigerating machine, and wherein Fig. 1 (a) is linear pattern layout, and Fig. 1 (b) is U-shaped layout, and Fig. 1 (c) is that coaxial type is arranged.
Fig. 2 is the structural representation of U-shaped pulse tube refrigerating machine cooling high-temperature superconducting wave filter.
Fig. 3 is U-shaped cold head 8 structural representation, and wherein Fig. 3 (a) is the main sectional view of U-shaped cold head, and Fig. 3 (b) is upward view, and Fig. 3 (c) is slit post schematic diagram.
Fig. 4 is high reverse--bias screen 11 and protective shield of radiation 12 structural diagrams, and wherein Fig. 4 (a) is front view, and Fig. 4 (b) is top view.
Fig. 5 is thin frame structure 13 structural representation, and wherein Fig. 5 (a) is front view, and Fig. 5 (b) is top view.
Fig. 6 is hot-side heat dissipation support platform 7 structural representation.
Fig. 7 is baffle plate 22 and fixed head 23 structural representation, and wherein Fig. 7 (a) is sectional view, and Fig. 7 (b) is front view.
Wherein: 1 is compressor, 2 is connecting leg, 3 is regenerator, 4 is pulse tube, 5 is phase modulating mechanism, 6 is air reservoir, 7 is hot-side heat dissipation support platform, 8 is U-shaped cold head, 9 is cylinder Dewar, 10 is high temperature superconduction wave filter, 11 is high reverse--bias screen, 12 is protective shield of radiation, 13 is thin frame structure, 14 is vacuum valve, 15 is coaxial cable, 16 is sealed electrical connector, 17 is cable, 18 is automatically controlled and signal pickup assembly, 19 is holding wire, 20 is wire harness apparatus, 21 is equipment box, 22 is baffle plate, 23 is fixed head, 24 is compressor bracket, 25 is cooling platform, 26 is air reservoir connector, 27 is hot junction connecting leg, 28 is fan, 29 is fence, 30 is regenerator end cold head, 31 is pulse pipe end cold head, 32 is slit post, 33 is pad, 34 is regenerator end cold head slit pore, 35 is pulse pipe end cold head slit pore, 36 is slit post slit, 37 is high reverse--bias screen through hole, 38 is uniform through hole, 39 is hot-side heat dissipation support platform lower end boss, 40 is hot-side heat dissipation support platform upper end boss, 41 is hot-side heat dissipation support platform regenerator side slit pore, 42 is hot-side heat dissipation support platform pulse tube side slit pore, 43 fix uniform boss for thin frame structure, 44 is the uniform through hole of hot-side heat dissipation support platform, 45 is baffle center circular groove.
Detailed description of the invention
Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the present invention is described in further detail.
As shown in Figure 2, the structure of the U-shaped pulse tube refrigerating machine cooling high-temperature superconducting wave filter invented is made up of U-shaped cold head 8, hot-side heat dissipation support platform 7, cylinder Dewar 9, high reverse--bias screen 11, protective shield of radiation 12, thin frame structure 13, equipment box 21; The cold finger of U-shaped pulse tube refrigerating machine is made up of regenerator 3, pulse tube 4, phase modulating mechanism 5, air reservoir 6, hot-side heat dissipation support platform 7, U-shaped cold head 8, and compressor 1 is coupled with cold finger by connecting leg 2 and forms U-shaped pulse tube refrigerating machine; The high-purity oxygen-free copper that U-shaped cold head 8 adopts heat conductivility good is made, its structure as shown in Figure 3, be made up of three parts, comprise regenerator end cold head 30, pulse pipe end cold head 31 and slit post 32, wherein there are slit pore 34 and slit pore 35 in regenerator end cold head 30 and pulse pipe end cold head 31 lower end; Slit post 32 has slit 36, and its left end inserts regenerator end cold head 30, and right-hand member inserts pulse pipe end cold head 31, and adopts the clean brazing mode of vacuum to be welded as a whole by three parts at 33 places; U-shaped cold head 8 entirety is square, slit pore 34, slit pore 35 and slit 36 Working medium gas by time expand Working medium gas contact heat-exchanging area, improve the heat exchange efficiency of U-shaped cold head 8; Regenerator 3 and pulse tube 4 is inserted respectively below U-shaped cold head 8; High temperature superconduction wave filter 10 is placed and is fixed on U-shaped cold head 8 upper surface, is coupled with U-shaped pulse tube refrigerating machine; Wherein U-shaped cold head 8 upper surface is through finish turning process, and flatness is 0.05mm, to fit tightly with high temperature superconduction wave filter 10, and scribbles low temperature heat-conducting silicone grease between, to strengthen the transmission of cold; Be provided with high reverse--bias screen 11 and protective shield of radiation 12 at U-shaped cold head 8 upper surface, high temperature superconduction wave filter 10 and U-shaped cold head 8 are covered in wherein; As shown in Figure 4, adopt highly reflective material to make, wherein inner surface is through blackening process, and outer surface is through polishing grinding process for the structure of high reverse--bias screen 11 and protective shield of radiation 12; Shield 11 both sides at high reverse--bias and have aperture 37, facilitate passing through of coaxial cable 15; High reverse--bias shields 11 wall thickness at 1.0mm, and the wall Thickness ness of protective shield of radiation 12 is at 0.5mm; High reverse--bias shields 11 limit, lower end platforms and protective shield of radiation 12 upper end Bian Tai to have got on the bus uniform through hole 38, for high reverse--bias screen 11 and protective shield of radiation 12 screw fastening are connected to U-shaped cold head 8 upper surface; Thin frame structure 13 is installed in hot-side heat dissipation support platform 7, covers in wherein by U-shaped pulse tube refrigerating machine cold finger and high temperature superconduction wave filter 10, and as shown in Figure 5, the thin rod of bending being expoxy glass steel fibre by 6 root timber material forms structure; Be wrapped with Multilayer radiation-proof material in its outside, around regenerator 3 and pulse tube 4, be wrapped with Multilayer radiation-proof material equally respectively, to reduce the loss of refrigeration capacity that heat radiation may cause; Hot-side heat dissipation support platform 7 structure as shown in Figure 6, overall rounded slab construction; Hot-side heat dissipation support platform 7 lower end boss 39 utilizes connecting leg 2 to connect compressor 1, upper end regenerator end slit pore 41 inserts and connects regenerator 3, upper end boss 40 has pulse pipe end slit pore 42 to insert connection pulse tube 4, and lower end utilizes hot junction connecting leg 27 to connect phase modulation structure 5 and air reservoir 6; Slit pore 41 and slit pore 42 are cut with slit respectively, Working medium gas by time expand hot-side heat dissipation support platform 7 and Working medium gas contact heat-exchanging area, improve heat exchange efficiency; As can be seen from Figure 6, the regenerator hot-side heat dissipation of U-shaped pulse tube refrigerating machine and pulse tube hot-side heat dissipation become one by hot-side heat dissipation support platform 7, be connected compressor 1 and phase modulation apparatus by connecting leg 2 with 27, and the parts such as regenerator 3 and pulse tube 4 are played a supporting role; There is uniform small boss 43 hot-side heat dissipation support platform 7 upper surface, and the installation for thin frame structure 13 is fixed; Hot-side heat dissipation support platform 7 is symmetrically installed with sealed electrical connector 16, for the Signal transmissions of high temperature superconduction wave filter 10; Hot-side heat dissipation support platform 7 upper surface is coupled with cylinder Dewar 9, is connected by screw fastening, utilizes sealing ring to seal, and support cylinder Dewar 9, forms U-shaped pulse tube refrigerating machine cold finger and high temperature superconduction wave filter 10 and to work required vacuum chamber environment; 44 is the uniform through hole for screw fastening; During installation, hot-side heat dissipation support platform 7 cylindrical is installed on the center hole of equipment box 22 epipleural, and U-shaped pulse tube refrigerating machine cold finger and vacuum chamber are fixed; Equipment box 21 provides integration packaging for U-shaped pulse tube refrigerating machine and high temperature superconduction wave filter 10; Wherein automatically controlled and signal pickup assembly 18 is positioned on the right side of the electric control chamber below equipment box 21 baffle plate 22, has outside power supply and signaling interface in electric control chamber arranged outside; Above baffle plate 22, place U-shaped pulse tube refrigerating machine, the power house wherein between baffle plate 22 and epipleural places compressor 1, and utilizes compressor bracket 24 to be fixed; Epipleural places hot-side heat dissipation support platform 7 for the U-shaped pulse tube cold finger of placement; Compressor 1 lower end is positioned over cooling platform 25 upper end, cooling platform 25 lower end is connected with air reservoir connector 26, and air reservoir connector 26 lower end connects air reservoir 6, and is positioned in baffle plate 22 center circular groove 45, utilize fixed head 23 to be fixed, baffle plate 22 and fixed head 23 structure are as shown in Figure 7; Air reservoir connector 26 has perforate towards the side outside paper, facilitates U-shaped pulse pipe refrigerator hot end connecting leg 27 to pass through; Compressor 1 walked around by hot junction connecting leg 27, through air reservoir connector 26 perforate, is connected with phase modulation structure 5 and air reservoir 6; Equipment box 21 left side plate is provided with fan 28 and fence 29 respectively.
The manufacture method of the U-shaped pulse tube refrigerating machine cooling high-temperature superconducting filter construction invented can be implemented as follows:
U-shaped cold head 8 structure as shown in Figure 3, adopts the good high-purity oxygen-free copper of heat conductivility to be made, comprises three parts: regenerator end cold head 30, pulse pipe end cold head 31 and slit post 32; Regenerator end cold head 30 lower end utilizes Linear cut slow wire feeding to process the slit of 45 wide 0.10mm, form slit pore 34, regenerator 3 is facilitated to insert, slit post 32 left end inserts blind hole on the right side of regenerator end cold head 30, adopt in pulse pipe end cold head 31 lower end Linear cut slow wire feeding processing slit to form slit pore 35, facilitate pulse tube 4 to insert; Slit post 32 inserts blind hole on the left of pulse pipe end cold head 32; Slit post 32 is one section of cylindrical ladder section part, adopts Linear cut slow wire feeding processing slit 36 respectively at two ends, left and right; During installation, slit post 32 left end inserts regenerator end cold head 30, and right-hand member inserts pulse pipe end cold head 31, adopts the clean brazing mode of vacuum to be welded as a whole by three seal parts at 33 places; U-shaped cold head 8 upper surface finish turning, flatness is 0.05mm, and during installation, surface is coated with low temperature heat-conducting silicone grease, fits tightly with high temperature superconduction wave filter 10.
High reverse--bias screen 11 is installed on U-shaped cold head 8 upper surface with protective shield of radiation 12, covers in wherein by high temperature superconduction wave filter 10 and U-shaped cold head 8, and structure as shown in Figure 4, adopts highly reflective material to make; It is several character form structures that high reverse--bias shields 11 cross sections, and at its two sidetrackings aperture 37, facilitate passing through of coaxial cable 15, wall thickness is 1.0mm; Four wall thickness 0.5mm of protective shield of radiation 12; Shield 11 limit, lower end platforms and protective shield of radiation 12 upper end Bian Tai at high reverse--bias to have got on the bus uniform through hole 38; High reverse--bias screen 11 and protective shield of radiation 12 inner surface are all through blackening process, and outer surface is through sanding and polishing process; Uniform through hole 38 screw fastening can be utilized during installation to be connected to U-shaped cold head 8 upper surface.
As shown in Figure 5, the thin rod of bending being expoxy glass steel fibre by 6 root timber material forms thin frame structure 13 structure; Thin frame structure 13 is installed in hot-side heat dissipation support platform 7, and outside is wrapped with Multilayer radiation-proof material, U-shaped pulse tube refrigerating machine cold finger and high temperature superconduction wave filter 10 is covered in wherein.
Hot-side heat dissipation support platform 7 structure as shown in Figure 6, overall rounded slab construction; Hot-side heat dissipation support platform 7 lower end car has boss 39, and connecting leg 2 inserts boss 39 center hole, and the other end connects compressor 1, and hot junction connecting leg 27 inserts on the right side of lower end in corresponding circle hole, and the other end connects phase modulation structure 5 and air reservoir 6; There is boss 40 hot-side heat dissipation support platform 7 upper end, and utilize Linear cut slow wire feeding to process slit pore 41 and slit pore 42 respectively in hot-side heat dissipation support platform 7 upper end, regenerator 3 and pulse tube 4 insert regenerator end slit pore 41 and pulse pipe end slit pore 42 respectively; The uniform small boss 43 of hot-side heat dissipation support platform 7 upper surface car, the installation for thin frame structure 13 is fixed; Hot-side heat dissipation support platform 7 is symmetrically installed with sealed electrical connector 16; Hot-side heat dissipation support platform 7 upper surface is coupled with cylinder Dewar 9, utilizes uniform through hole 44 to be fastenedly connected, utilize sealing ring to seal by screw; During installation, hot-side heat dissipation support platform 7 cylindrical is installed on the center hole of equipment box 22 epipleural, fixing U-shaped pulse tube refrigerating machine cold finger and vacuum chamber.
As shown in Figure 7, baffle plate 22 is two pieces of symmetrical thin plates for baffle plate 22 and fixed head 23 structure, symmetrically installs, and utilizes screw to be fixed on baffle plate 22 two pieces of symmetrical fixed heads 23 in semi-circular shape, baffle plate 22 liang of symmetrical members are connected in one; Equipment box 21 space is divided into power house and electric control chamber two parts by baffle plate 22 and fixed head 23, to support U-shaped pulse pipe refrigerator hot end.

Claims (2)

1. the structure of a U-shaped pulse tube refrigerating machine cooling high-temperature superconducting wave filter, it is by U-shaped cold head (8), hot-side heat dissipation support platform (7), cylinder Dewar (9), high reverse--bias screen (11), protective shield of radiation (12), thin frame structure (13), equipment box (21) forms, it is characterized in that: the cold finger of U-shaped pulse tube refrigerating machine is by regenerator (3), pulse tube (4), phase modulating mechanism (5), air reservoir (6), hot-side heat dissipation support platform (7), U-shaped cold head (8) forms, compressor (1) to be coupled with cold finger by connecting leg (2) and to form U-shaped pulse tube refrigerating machine, the regenerator hot-side heat dissipation of U-shaped pulse tube refrigerating machine and pulse tube hot-side heat dissipation become one by hot-side heat dissipation support platform (7), and are coupled with cylinder Dewar (9), support composition vacuum chamber, high temperature superconduction wave filter (10) is placed and is fixed on U-shaped cold head (8) working face, is coupled with U-shaped pulse tube refrigerating machine with this, at U-shaped cold head (8) upper surface, high reverse--bias screen (11) and protective shield of radiation (12) are set, high temperature superconduction wave filter (10) and U-shaped cold head (8) are covered in wherein, in hot-side heat dissipation support platform (7) the thin frame structure of upper installation (13), thin frame structure (13) outside is wrapped with Multilayer radiation-proof material, regenerator (3) and pulse tube (4) are wrapped with Multilayer radiation-proof material around respectively, cover in wherein by U-shaped pulse tube refrigerating machine cold finger, cylinder Dewar (9) lower end and hot-side heat dissipation support platform (7) upper end fit, and utilize screw to be fastenedly connected, sealing ring seals, cylinder Dewar (9) sidewall is provided with vacuum valve (14), for vacuumizing interface, high temperature superconduction wave filter (10) is connected to by coaxial cable (15) and is positioned at sealed electrical connector (16) in hot-side heat dissipation support platform (7) by signal transmission to outside vacuum chamber, and by cable (17) by Signal transmissions to automatically controlled and signal pickup assembly (18), automatically controlled and signal pickup assembly (18) carries out input and the control of power supply signal to compressor (1) by holding wire (19), cable (17) and holding wire (19) are fixed by wire harness apparatus (20), integral device is positioned in equipment box (21), automatically controlled and signal pickup assembly (18) is positioned on the right side of the electric control chamber of equipment box (21) baffle plate (22) below, has outside power supply and signaling interface in electric control chamber arranged outside, place U-shaped pulse tube refrigerating machine in baffle plate (22) top, the power house be positioned between baffle plate (22) and epipleural places compressor (1), utilizes compressor bracket (24) to be fixed, compressor (1) lower end is positioned over cooling platform (25) upper end, cooling platform (25) lower end is connected with air reservoir connector (26), air reservoir connector (26) lower end connects air reservoir (6), and be positioned over baffle plate (22), utilize fixed head (23) to be fixed, air reservoir connector (26) has perforate towards the outer side of paper, facilitates U-shaped pulse pipe refrigerator hot end connecting leg (27) to pass through, compressor (1) walked around by hot junction connecting leg (27), through air reservoir connector (26) perforate, is connected with phase modulation structure (5) and air reservoir (6), equipment box (21) left side plate is provided with fan (28) and fence (29) respectively, thus the common structure forming a kind of U-shaped pulse tube refrigerating machine cooling high-temperature superconducting wave filter.
2. one kind manufactures the method for the structure of a kind of U-shaped pulse tube refrigerating machine cooling high-temperature superconducting wave filter as claimed in claim 1, it is characterized in that: U-shaped cold head (8) adopts the good high-purity oxygen-free copper of heat conductivility to be made, and is made up of regenerator end cold head (30), pulse pipe end cold head (31) and slit post (32), regenerator end cold head (30) lower end utilizes Linear cut slow wire feeding to process the slit of the wide 0.02 ~ 0.15mm of 30-60 bar, form slit pore (34), facilitate regenerator (3) to insert, have blind hole to facilitate slit post (32) left end to insert on regenerator end cold head (30) right side, adopt in pulse pipe end cold head (31) lower end Linear cut slow wire feeding processing slit to form slit pore (35), facilitate pulse tube (4) to insert, in pulse pipe end cold head (32) left side, car blind hole facilitates slit post (32) to insert, slit post (32) is one section of cylindrical ladder section part, adopts Linear cut slow wire feeding processing slit (36) respectively at two ends, left and right, during installation, slit post (32) left end inserts regenerator end cold head (30), and right-hand member inserts pulse pipe end cold head (31), adopts the clean brazing mode of vacuum to be welded as a whole by three seal parts at (33) place, the U-shaped cold head of finish turning (8) top surface plane degree is at below 0.10mm, and surface is coated with low temperature heat-conducting silicone grease, fits tightly with high temperature superconduction wave filter (10), install high reverse--bias screen (11) with protective shield of radiation (12) in U-shaped cold head (8) upper surface, cover in wherein by high temperature superconduction wave filter (10) and U-shaped cold head (8), employing highly reflective material is made, high reverse--bias screen (11) cross section is several character form structures, and two sidetracking apertures (37), facilitate passing through of coaxial cable (15), wall thickness 0.5 ~ 2.0mm, four wall thickness 0.2 ~ 1.0mm of protective shield of radiation (12), high reverse--bias screen (11) limit, lower end platform and protective shield of radiation (12) upper end Bian Tai have got on the bus uniform through hole (38), high reverse--bias screen (11) and protective shield of radiation (12) inner surface blackening process, outer surface sanding and polishing, utilizes uniform through hole (38) screw fastening to be connected to U-shaped cold head (8) upper surface, thin frame structure (13) is the thin bar construction of bending of expoxy glass steel fibre by 3 ~ 10 root timber material, be installed on hot-side heat dissipation support platform (7), outside is wrapped with Multilayer radiation-proof material, covers in wherein by U-shaped pulse tube refrigerating machine cold finger and high temperature superconduction wave filter (10), the overall rounded slab construction of hot-side heat dissipation support platform (7), lower end car boss (39), connecting leg (2) inserts boss (39) center hole, the other end connects compressor (1), hot junction connecting leg (27) inserts corresponding circle hole on the right side of lower end, the other end connects phase modulation structure (5) and air reservoir (6), hot-side heat dissipation support platform (7) upper end car boss (40), utilize Linear cut slow wire feeding to process slit pore (41) and slit pore (42) respectively in hot-side heat dissipation support platform (7) upper end, regenerator (3) and pulse tube (4) insert regenerator end slit pore (41) and pulse pipe end slit pore (42) respectively, the uniform small boss of hot-side heat dissipation support platform (7) upper surface car (43), be connected and fixed thin frame structure (13), hot-side heat dissipation support platform (7) symmetry installs sealed electrical connector (16), hot-side heat dissipation support platform (7) upper surface is coupled with cylinder Dewar (9), uniform through hole (44) is utilized to be fastenedly connected by screw, sealing ring is utilized to seal, hot-side heat dissipation support platform (7) cylindrical is installed on the center hole of equipment box (22) epipleural, and U-shaped pulse tube refrigerating machine cold finger and vacuum chamber are fixed, baffle plate (22) and fixed head (23) support U-shaped pulse pipe refrigerator hot end air reservoir connector (26) makes U-shaped pulse tube refrigerating machine be fixed support, baffle plate (22) is made up of two pieces of thin plates of symmetry, two pieces of symmetrical semi-circular ring-type fixing plate (23) symmetries are installed and utilized screw to be fixed on baffle plate (22), baffle plate (22) two symmetrical member is connected in one, equipment box (21) space is divided into power house and electric control chamber two parts by baffle plate (22) and fixed head (23), plays a supporting role to U-shaped pulse pipe refrigerator hot end.
CN201410748014.1A 2014-08-15 2014-12-09 U-shaped pulse tube refrigerator cooling high-temperature superconducting filter structure and manufacturing method Withdrawn CN104534717A (en)

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CN201520372245.7U Withdrawn - After Issue CN204787387U (en) 2014-08-15 2015-06-02 Structure of U type pulsatron refrigerator cooling high temperature superconduction wave filter
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CN114497931A (en) * 2020-10-28 2022-05-13 中国科学院理化技术研究所 High temperature superconducting filter system

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CN104180552A (en) * 2014-08-15 2014-12-03 中国科学院上海技术物理研究所 U-shaped pulse tube refrigerating machine structure for cooling high temperature superconducting filter and manufacture method
CN111430853B (en) * 2020-04-13 2021-06-08 卢姝欣 Superconductive filter encapsulation shielding device
CN114597618A (en) * 2020-12-07 2022-06-07 中国科学院理化技术研究所 Low-temperature system of high-temperature superconducting filter

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CN103307797A (en) * 2013-06-21 2013-09-18 中国科学院上海技术物理研究所 U-shaped pulse tube refrigerator and infrared device compact type coupled structure and manufacturing method
CN203771765U (en) * 2014-01-17 2014-08-13 中国科学院上海技术物理研究所 Compact coupled inertia tube type high-frequency coaxial pulse tube refrigerating machine
CN104180552A (en) * 2014-08-15 2014-12-03 中国科学院上海技术物理研究所 U-shaped pulse tube refrigerating machine structure for cooling high temperature superconducting filter and manufacture method

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CN114497931A (en) * 2020-10-28 2022-05-13 中国科学院理化技术研究所 High temperature superconducting filter system
CN114497931B (en) * 2020-10-28 2023-06-27 中国科学院理化技术研究所 High temperature superconducting filter system

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Application publication date: 20150422