CN203659567U - Annular magnet conductive refrigerating structure made from high temperature superconducting material - Google Patents
Annular magnet conductive refrigerating structure made from high temperature superconducting material Download PDFInfo
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- CN203659567U CN203659567U CN201320880890.0U CN201320880890U CN203659567U CN 203659567 U CN203659567 U CN 203659567U CN 201320880890 U CN201320880890 U CN 201320880890U CN 203659567 U CN203659567 U CN 203659567U
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Abstract
An annular magnet conductive refrigerating structure made from high temperature superconducting belongs to a superconducting magnet conductive refrigerating apparatus. With conductive refrigeration achieved via a refrigerating machine, problems that a present annular magnet conductive refrigerating structure has low conductive refrigeration efficiency and poor magnetic heat stability are solved. The annular high temperature comprises an upper cold guide disc, a lower cold guide disc, a cold guide rod and a plurality of cold guide units, wherein two ends of the cold guide rod are respectively fixedly connected with the upper cold guide disc and the lower cold guide disc; the upper end part of the cold guide rod is fixedly connected with a copper block; the copper block; main heat sink of the annular superconductive magnet is formed by the upper cold guide disc and the lower cold guide disc; the plurality of cold guide units are annularly arrayed between the upper cold guide disc and the lower cold guide disc; and between the upper cold guide disc and the lower cold guide disc, there are provided inner side cold guide rods and outer side cold guide rods, so heat is conducted between the upper and the lower cold guide discs. A superconductive magnet can be cooled to a preset temperature by the annular high temperature superconducting magnet conductive refrigerating structure when cooling capacity of the refrigerating machine is adequate; and cold capacity conductive speed of conductive refrigeration can be improved, temperature gradient of the superconductive magnet can be reduced and stable operation of the superconductive magnet is guaranteed.
Description
Technical field
The utility model belongs to superconducting magnet conduction refrigerating plant, is specifically related to a kind of annular high-temperature superconducting magnet conduction refrigerating plant.
Background technology
Along with improving constantly of high temperature superconducting materia performance, the future development that superconductor technology forward is practical, existing superconducting magnet is conventionally superimposed as screwed pipe shape or is arranged in electric the connecting and composing of annular by the two cakes of multiple superconductions; As shown in Fig. 1 (a), Fig. 1 (b), the two cakes 1 of superconduction are annular, from left and right order is made up of left epoxy resin ring 1A, left coil 1B, middle epoxy resin ring 1C, right coil 1D and right epoxy resin ring 1E, left coil 1B is identical with the number of turn of right coil 1D, by superconducting tape coiling, direction of circling is contrary, in the middle of left coil 1B and right coil 1D, fold up middle epoxy resin ring 1C, left coil 1B left side and right coil 1D right side are placed with respectively left epoxy resin ring 1A and right epoxy resin ring 1E.
Operating cost height is one of problems of restriction superconducting magnet development, and the main operating cost of superconducting magnet is the refrigeration of superconducting magnet.Existingly be arranged in annular superconducting magnet and generally freeze by immersion, or carry cold by cryogenic fluid, such refrigeration structure complexity, maintainability is poor, and operating cost is high.Along with the development of G-M refrigeration mechanism refrigeration technique, cold and the efficiency of G-M refrigeration machine improve constantly, and the life-span also significantly extends, for conduction refrigeration provides good low-temperature receiver.Although use conduction refrigeration modes refrigeration there is no the advantage that immersion type cooling refrigeration speed is fast and magnet has a narrow range of temperature, there is advantage clearly: energy consumption is low, compact conformation, is convenient to safeguard, can improve the travelling performance of equipment; Existing toroidal magnet conduction refrigeration structure comprises conduction cooling dish and lower conduction cooling dish, and multiple conduction coolings unit is arranged in annular between described upper and lower conduction cooling dish, and the dynamic stability of cooling time and magnet can be affected like this.
Summary of the invention
The utility model provides a kind of annular high-temperature superconducting magnet conduction refrigerating plant, conduct refrigeration by refrigeration machine, solves existing toroidal magnet and conducts that the conduction cooling efficiency of refrigeration structure existence is low, the problem of magnet poor heat stability.
The annular high-temperature superconducting magnet conduction of one provided by the utility model refrigerating plant, comprises conduction cooling dish, lower conduction cooling dish, conduction cooling rod and N conduction cooling unit, and N >=3, is characterized in that:
Described upper conduction cooling dish, lower conduction cooling disk shape, structure are identical, be the disk with center hole, the surface of disk has from center hole radiation and along the equally distributed N of disk circumference road groove, there is the interconnecting hole distributing along even circumferential around center hole, approach disk border and there is the outer connecting hole distributing along even circumferential;
The two ends up and down of described conduction cooling rod are affixed with the center hole of the center hole of described upper conduction cooling dish, lower conduction cooling dish respectively, the end, conduction cooling rod upper end that protrudes from conduction cooling dish is connected with copper billet, and copper billet and upper conduction cooling dish, lower conduction cooling dish form the mainly heat sink of superconduction toroidal magnet;
The upright projection of the groove of described upper conduction cooling dish, interconnecting hole, outer connecting hole overlaps with the upright projection of the groove of described lower conduction cooling dish, interconnecting hole, outer connecting hole respectively; Described N conduction cooling unit lays respectively between the interconnecting hole and outer connecting hole of described upper and lower conduction cooling dish, and embed between the groove of described upper conduction cooling dish and the groove of lower conduction cooling dish, the upper surface of N conduction cooling unit is fixedly connected with by screw with described upper conduction cooling dish, and the lower surface of N conduction cooling unit is fixedly connected with by screw with described lower conduction cooling dish; In each interconnecting hole of upper and lower conduction cooling dish and each outer connecting hole, be installed with respectively inner side cool guiding rod and outside cool guiding rod, for heat conduction between described upper and lower conduction cooling dish; Inner side cool guiding rod and conduction cooling rod become the main thoroughfare of cold in conduction cooling unit inside, and outside cool guiding rod becomes the main thoroughfare of cold in outside, conduction cooling unit;
Described conduction cooling unit comprises inside support ring, outer fixed head, left conduction cooling plate, left cover, right conduction cooling plate and right cover plate, and described inside support ring is annular, is embedded in the centre bore of the two cakes of superconduction under operating state; Described outer fixed head has manhole, and the external diameter of the two cakes of its internal diameter and described superconduction adapts, and under operating state, the two cakes of described superconduction are embedded in the manhole of described outer fixed head; Described left conduction cooling plate, right conduction cooling plate are affixed on respectively described outer fixed head left surface and right flank, under operating state described left cover and right cover plate respectively from left side and right side with described fixed head be connected, described left conduction cooling plate, right conduction cooling plate are fixed, and two described superconduction cakes are axially fixed in the manhole of described outer fixed head; Outer fixed head, from fixing up and down the two cakes of superconduction, ensures that excessive radially deformation can not occur the two cakes of superconduction when through-flow, plays the effect of conduction cold simultaneously, reduces the temperature gradient of superconducting magnet.
Described annular high-temperature superconducting magnet conduction refrigerating plant, is characterized in that:
Upper flange is connected with the upper surface of described upper conduction cooling dish, the lower surface of lower conduction cooling dish by the many metal connecting rods through upper conduction cooling dish and lower conduction cooling dish respectively with lower flange, upper flange, lower flange and Duo Gen metal connecting rod form squirrel-cage framework, and described upper conduction cooling dish, lower conduction cooling dish are supported;
Described upper flange has central through hole, and described conduction cooling rod upper end protrudes from the center hole of conduction cooling dish and the central through hole of upper flange.
Described annular high-temperature superconducting magnet conduction refrigerating plant, is characterized in that:
In described conduction cooling unit, described left conduction cooling plate is identical with right conduction cooling plate shape and structure, be separately the rectangular copper that thickness is not more than 2mm, rectangular copper center has circular port, rectangular copper right edge has and the two consistent arc sections of cake outline of superconduction, the left and right sides of described circular port has the left arc groove concentric with circular port, right arc groove, the arc length of described left arc groove is greater than quadrant, and described left arc groove and right arc groove are communicated with by the groove that traverses that traverses rectangular copper limit, left side and the circular port center of circle; The both sides up and down of described circular port have straight-line groove and lower straight-line groove, and the length of described upper straight-line groove and lower straight-line groove is greater than respectively 10mm;
Described left arc groove, right arc groove, the width that traverses groove, upper straight-line groove and lower straight-line groove are respectively as 1mm～2mm, play and fall eddy current effect.
The utility model is realized in the following manner to the conduction refrigeration of superconducting magnet:
The utility model in working order under, the copper billet of end, conduction cooling rod upper end is connected with refrigeration machine cold head by being flexible coupling.Magnet is positioned in vacuum system, by vacuum system, the gas in container is taken to completely cut off away the heat convection of magnet and external environment, simultaneously by arranging that around magnet radiation shield weakens the extraneous thermal radiation for magnet, by magnet conduction structure, the cold of G-M refrigeration machine is sent to on magnet, to realize the conduction of magnet cooling simultaneously.Conduction structure is being played the part of the effect of conduct cold in the cooling process of conduction, and in the situation that refrigeration machine cold is certain, the conduction structure of magnet has directly determined the temperature gradient after the cooling rate of magnet and magnet temperature are stablized.
Like this, cold is delivered on upper conduction cooling dish, lower conduction cooling dish by copper billet and conduction cooling rod, between two conduction cooling dishes, also there are inner side cool guiding rod, outside cool guiding rod to be connected simultaneously, make the temperature gradient of whole conduction cooling skeleton very little, upper conduction cooling dish, lower conduction cooling dish and conduction cooling unit close contact, cold is conducted to the surface of the two cakes of superconduction, realize the refrigeration of the two cakes of superconduction.
The design of left conduction cooling plate and right conduction cooling plate has considered that high-temperature superconducting magnet produces the problem of eddy current loss in charge and discharge process in good conductor.Conduct to freeze by the two cakes of superconduction both sides and reduced the temperature gradient of two cakes.Outer fixed head plays the supporting role of the two cakes of superconduction, also has certain conduction cooling function, can reduce two cakes temperature gradient radially; Conduction cooling rod not only makes cold can well be transmitted to lower conduction cooling dish, reduces the temperature gradient of whole superconducting magnet, also plays heat sink effect together with the copper billet of its top simultaneously, has improved the thermal stability of superconducting magnet; Upper flange and lower flange have ensured that conduction cooling is flexible coupling when directly contact with conduction cooling dish, has also ensured that superconducting magnet has enough mechanical strengths.
With respect to existing toroidal magnet conduction structure, the utility model can make superconducting magnet be down to predetermined temperature in the situation that of refrigeration machine cold abundance, improve simultaneously and conduct the cold conduction of velocity freezing, the temperature gradient that reduces superconducting magnet, ensured the stable operation of superconducting magnet.
Brief description of the drawings
Fig. 1 (a) is the two cake profile schematic diagrames of superconduction;
Fig. 1 (b) is the two cake structure schematic diagrames of superconduction;
Fig. 2 is the structural representation of first embodiment of the utility model;
Fig. 3 (a) is upper conduction cooling dish top surface structure schematic diagram;
Fig. 3 (b) is the upper conduction cooling face structural representation of trying to get to the heart of a matter;
Fig. 4 is conduction cooling cellular construction schematic diagram;
Fig. 5 is the structural representation of left and right conduction cooling plate;
Fig. 6 is the structural representation of second embodiment of the utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated, should be appreciated that instantiation described herein is only for the utility model, and be not used in restriction the utility model.
As shown in Figure 2, first embodiment of the utility model, comprises conduction cooling dish 3, lower conduction cooling dish 5,2 and 12 conduction cooling unit 9 of conduction cooling rod;
As shown in Fig. 3 (a), Fig. 3 (b), described upper conduction cooling dish 3, lower conduction cooling dish 5 shapes, structure are identical, be the disk with center hole, the surface of disk has from center hole 3-1 radiation and along the equally distributed N of disk circumference road groove 3-2, there is the interconnecting hole 3-3 distributing along even circumferential around center hole 3-1, approach disk border and there is the outer connecting hole 3-4 distributing along even circumferential;
As shown in Figure 2, the two ends up and down of described conduction cooling rod 2 are affixed with the center hole 3-1 of the center hole 3-1 of described upper conduction cooling dish 3, lower conduction cooling dish 5 respectively, conduction cooling rod 2 ends, upper end that protrude from conduction cooling dish 3 are connected with copper billet 11, and copper billet 11 and upper conduction cooling dish 3, lower conduction cooling dish 5 form the mainly heat sink of superconduction toroidal magnet;
The upright projection of the groove of described upper conduction cooling dish, interconnecting hole, outer connecting hole overlaps with the upright projection of the groove of described lower conduction cooling dish, interconnecting hole, outer connecting hole respectively; Described 12 conduction cooling unit 9 lay respectively between the interconnecting hole and outer connecting hole of described upper and lower conduction cooling dish, and embed between the groove of described upper conduction cooling dish and the groove of lower conduction cooling dish, the upper surface of 12 conduction cooling unit 9 is fixedly connected with by screw with described upper conduction cooling dish 3, and the lower surface of 12 conduction cooling unit is fixedly connected with by screw with described lower conduction cooling dish 5; In each interconnecting hole of upper and lower conduction cooling dish and each outer connecting hole, be installed with respectively inner side cool guiding rod 6 and outside cool guiding rod 4, for heat conduction between described upper and lower conduction cooling dish; Inner side cool guiding rod 6 and conduction cooling rod 2 become the main thoroughfare of cold in conduction cooling unit inside, and outside cool guiding rod 4 becomes the main thoroughfare of cold in outside, conduction cooling unit;
In order to reduce contact heat resistance, ensure that contact is good, in the time of assembling, the groove of the groove of upper conduction cooling dish and lower conduction cooling dish and the contact portion of conduction cooling unit need to be used the compacting of indium sheet.
In the present embodiment, upper conduction cooling dish 3, lower conduction cooling dish 5, conduction cooling rod 2, inner side cool guiding rod 6 and outside cool guiding rod 4 all adopt copper product to make.
As shown in Figure 4, described conduction cooling unit 9 comprises inside support ring 9-1, outer fixed head 9-2, left conduction cooling plate 9-3, left cover 9-4, right conduction cooling plate 9-5 and right cover plate 9-6, and described inside support ring 9-1 is annular, is embedded in the centre bore of the two cakes 1 of superconduction under operating state; Described outer fixed head 9-2 has manhole, and the external diameter of the two cakes 1 of its internal diameter and described superconduction adapts, and under operating state, the two cakes 1 of described superconduction are embedded in the manhole of described outer fixed head 9-2; Described left conduction cooling plate 9-3, right conduction cooling plate 9-5 are affixed on respectively described outer fixed head 9-2 left surface and right flank, under operating state described left cover 9-4 and right cover plate 9-6 respectively from left side and right side with described fixed head 9-2 be connected, described left conduction cooling plate 9-3, right conduction cooling plate 9-5 are fixed, and two described superconduction cakes 1 are axially fixed in the manhole of described outer fixed head 9-2; Outer fixed head 9-2, from fixing up and down the two cakes of superconduction, ensures that excessive radially deformation can not occur the two cakes of superconduction when through-flow, plays the effect of conduction cold simultaneously, reduces the temperature gradient of superconducting magnet.
In the present embodiment, inside support ring 9-1, outer fixed head 9-2, left cover 9-4 and right cover plate 9-6 all adopt stainless steel material to make.
As shown in Figure 5, in the present embodiment, left conduction cooling plate 9-3 is identical with right conduction cooling plate 9-5 shape and structure, be separately the rectangular copper that thickness is 1mm, rectangular copper center has circular port 9A, rectangular copper right edge has and the two consistent arc section 9B of cake outline of superconduction, the left and right sides of described circular port 9A has the left arc groove 9C concentric with circular port 9A, right arc groove 9D, the arc length of described left arc groove 9C is 1/3rd circumference, described left arc groove 9C and right arc groove 9D are communicated with by the groove 9E that traverses that traverses rectangular copper limit, left side and the circular port 9A center of circle, the both sides up and down of described circular port 9A have straight-line groove 9F and lower straight-line groove 9G, and the length of described upper straight-line groove 9F and lower straight-line groove 9G is respectively 12mm,
Described left arc groove 9C, right arc groove 9D, the width that traverses groove 9E, upper straight-line groove 9F and lower straight-line groove 9G are respectively as 1mm, play and fall eddy current effect.
The Main Function of left conduction cooling plate and right conduction cooling plate is the inner side that the cold of upper conduction cooling dish 3, lower conduction cooling dish 5 is delivered to magnet along the outside of the two cakes 1 of superconduction, reduces the two cake radial symmetry gradients of superconduction.
As shown in Figure 6, second embodiment of the utility model, on the basis of first embodiment, has increased upper flange 7 and lower flange 8;
Upper flange 7 is connected with the upper surface of described upper conduction cooling dish, the lower surface of lower conduction cooling dish by the many metal connecting rods 10 through upper conduction cooling dish and lower conduction cooling dish respectively with lower flange 8, upper flange 7, lower flange 8 and Duo Gen metal connecting rod 10 form squirrel-cage framework, and described upper conduction cooling dish 3, lower conduction cooling dish 5 are supported;
Described upper flange 7 has central through hole, and described conduction cooling rod 2 upper ends protrude from the center hole 3-1 of conduction cooling dish 3 and the central through hole of upper flange 7.
Upper flange 7, lower flange 8 and metal connecting rod 10 adopt stainless steel to make, and its specific heat capacity is larger, and thermal conduction characteristic and low-temperature characteristics are all better simultaneously.
Claims (3)
1. an annular high-temperature superconducting magnet conduction refrigerating plant, comprises conduction cooling dish (3), lower conduction cooling dish (5), conduction cooling rod (2) and N conduction cooling unit (9), and N >=3, is characterized in that:
Described upper conduction cooling dish (3), lower conduction cooling dish (5) shape, structure are identical, be the disk with center hole, the surface of disk has from center hole (3-1) radiation and along the equally distributed N of disk circumference road groove (3-2), there is the interconnecting hole (3-3) distributing along even circumferential around center hole (3-1), approach disk border and there is the outer connecting hole (3-4) distributing along even circumferential;
The two ends up and down of described conduction cooling rod (2) are affixed with the center hole (3-1) of the center hole (3-1) of described upper conduction cooling dish (3), lower conduction cooling dish (5) respectively, conduction cooling rod (2) end, upper end that protrudes from conduction cooling dish (3) is connected with copper billet (11), and copper billet (11) and upper conduction cooling dish (3), lower conduction cooling dish (5) form the mainly heat sink of superconduction toroidal magnet;
The upright projection of the groove of described upper conduction cooling dish, interconnecting hole, outer connecting hole overlaps with the upright projection of the groove of described lower conduction cooling dish, interconnecting hole, outer connecting hole respectively; Described N conduction cooling unit (9) lays respectively between the interconnecting hole and outer connecting hole of described upper and lower conduction cooling dish, and embed between the groove of described upper conduction cooling dish and the groove of lower conduction cooling dish, the upper surface of N conduction cooling unit (9) is fixedly connected with by screw with described upper conduction cooling dish (3), and the lower surface of N conduction cooling unit is fixedly connected with by screw with described lower conduction cooling dish (5); In each interconnecting hole of upper and lower conduction cooling dish and each outer connecting hole, be installed with respectively inner side cool guiding rod (6) and outside cool guiding rod (4), for heat conduction between described upper and lower conduction cooling dish; Inner side cool guiding rod (6) and conduction cooling rod (2) become the main thoroughfare of cold in conduction cooling unit inside, and outside cool guiding rod (4) becomes the main thoroughfare of cold in outside, conduction cooling unit;
Described conduction cooling unit (9) comprises inside support ring (9-1), outer fixed head (9-2), left conduction cooling plate (9-3), left cover (9-4), right conduction cooling plate (9-5) and right cover plate (9-6), described inside support ring (9-1) is annular, is embedded in the centre bore of the two cakes (1) of superconduction under operating state; Described outer fixed head (9-2) has manhole, the external diameter of the two cakes (1) of its internal diameter and described superconduction adapts, and under operating state, the two cakes (1) of described superconduction are embedded in the manhole of described outer fixed head (9-2); Described left conduction cooling plate (9-3), right conduction cooling plate (9-5) are affixed on respectively described outer fixed head (9-2) left surface and right flank, under operating state described left cover (9-4) and right cover plate (9-6) respectively from left side and right side with described fixed head (9-2) be connected, described left conduction cooling plate (9-3), right conduction cooling plate (9-5) are fixed, and two described superconduction cakes (1) are axially fixed in the manhole of described outer fixed head (9-2); Outer fixed head (9-2), from fixing up and down the two cakes of superconduction, ensures that excessive radially deformation can not occur the two cakes of superconduction when through-flow, plays the effect of conduction cold simultaneously, reduces the temperature gradient of superconducting magnet.
2. annular high-temperature superconducting magnet conduction refrigerating plant as claimed in claim 1, is characterized in that:
Upper flange (7) is connected with the upper surface of described upper conduction cooling dish, the lower surface of lower conduction cooling dish by the many metal connecting rods (10) through upper conduction cooling dish and lower conduction cooling dish respectively with lower flange (8), upper flange (7), lower flange (8) and many metal connecting rods (10) form squirrel-cage framework, and described upper conduction cooling dish (3), lower conduction cooling dish (5) are supported;
Described upper flange (7) has central through hole, and described conduction cooling rod (2) upper end protrudes from the center hole (3-1) of conduction cooling dish (3) and the central through hole of upper flange (7).
3. annular high-temperature superconducting magnet conduction refrigerating plant as claimed in claim 1 or 2, is characterized in that:
In described conduction cooling unit (9), described left conduction cooling plate (9-3) is identical with right conduction cooling plate (9-5) shape and structure, be separately the rectangular copper that thickness is not more than 2mm, rectangular copper center has circular port (9A), rectangular copper right edge has and the two consistent arc sections (9B) of cake outline of superconduction, the left and right sides of described circular port (9A) has the left arc groove (9C) concentric with circular port (9A), right arc groove (9D), the arc length of described left arc groove (9C) is greater than quadrant, described left arc groove (9C) and right arc groove (9D) are communicated with by the groove (9E) that traverses that traverses rectangular copper limit, left side and circular port (9A) center of circle, the both sides up and down of described circular port (9A) have straight-line groove (9F) and lower straight-line groove (9G), and the length of described upper straight-line groove (9F) and lower straight-line groove (9G) is greater than respectively 10mm,
Described left arc groove (9C), right arc groove (9D), the width that traverses groove (9E), upper straight-line groove (9F) and lower straight-line groove (9G) are respectively as 1mm～2mm, play and fall eddy current effect.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320880890.0U CN203659567U (en) | 2013-12-28 | 2013-12-28 | Annular magnet conductive refrigerating structure made from high temperature superconducting material |
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| CN201320880890.0U CN203659567U (en) | 2013-12-28 | 2013-12-28 | Annular magnet conductive refrigerating structure made from high temperature superconducting material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103745796A (en) * | 2013-12-28 | 2014-04-23 | 华中科技大学 | Annular high temperature superconducting magnet conduction refrigerating structure |
| CN107799264A (en) * | 2016-09-07 | 2018-03-13 | 中国电力科学研究院 | A kind of fixed mount of high-temperature superconducting magnet |
| CN109210826A (en) * | 2018-08-27 | 2019-01-15 | 江苏热声机电科技有限公司 | Cryocooler cold head |
-
2013
- 2013-12-28 CN CN201320880890.0U patent/CN203659567U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103745796A (en) * | 2013-12-28 | 2014-04-23 | 华中科技大学 | Annular high temperature superconducting magnet conduction refrigerating structure |
| CN103745796B (en) * | 2013-12-28 | 2016-01-20 | 华中科技大学 | A kind of annular high-temperature superconducting magnet conduction refrigeration structure |
| CN107799264A (en) * | 2016-09-07 | 2018-03-13 | 中国电力科学研究院 | A kind of fixed mount of high-temperature superconducting magnet |
| CN107799264B (en) * | 2016-09-07 | 2021-04-30 | 中国电力科学研究院 | Fixing frame of high-temperature superconducting magnet |
| CN109210826A (en) * | 2018-08-27 | 2019-01-15 | 江苏热声机电科技有限公司 | Cryocooler cold head |
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