CN204102660U - A kind of conduction cooling superconducting magnet refrigeration machine structure - Google Patents
A kind of conduction cooling superconducting magnet refrigeration machine structure Download PDFInfo
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- CN204102660U CN204102660U CN201420540160.0U CN201420540160U CN204102660U CN 204102660 U CN204102660 U CN 204102660U CN 201420540160 U CN201420540160 U CN 201420540160U CN 204102660 U CN204102660 U CN 204102660U
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Abstract
A kind of conduction cooling superconducting magnet refrigeration machine structure, include the adpting flange be connected with refrigeration machine, adpting flange is connected with pivot flange by bellows, the outer Dewar of magnet is connected with pivot flange respectively, the one-level cold head of refrigeration machine is connected with heat transfer component upper element, the lower end of heat transfer component upper element and the upper end of heat transfer component bottom are realized combining closely by pressure, the lower end of heat transfer component bottom is connected with the cold screen flange of magnet, refrigeration machine secondary cold head is connected with the top of two-stage heat transmission parts, the bottom of two-stage heat transmission parts and the top of two-stage heat transmission member supporting are realized combining by pressure, conduction copper braid over braid top is together with the lower weld of two-stage heat transmission member supporting, support spring upper end and two-stage heat transmission member supporting weld together, support spring lower end is fixing on a mounting board, mounting panel bottom conduction copper braid over braid is connected with the winding of magnet, there is structure simple, easy to operate, maintenance cost is low, install, the simple feature of method for dismounting.
Description
Technical field
The invention belongs to superconducting magnet technical field, particularly relate to a kind of conduction cooling superconducting magnet refrigeration machine structure.
Background technology
The mode that traditional superconducting magnet generally adopts the liquid heliums such as low-temperature superconducting wire NbTi, Nb3Sn to soak is freezed.But cryogenic magnet cost is high, and owing to must operate at liquid helium region (4.2K), refrigeration and maintenance cost very high.Along with the anxiety of liquid helium resource, the development of Refrigeration Technique, Conduction cooled (conduction-cooled, also cryocooled is claimed, without liquid helium, Cryogen-Free) research of superconducting magnet technology progressively moving towards practical, like this, adopt Conduction cooled technology to manufacture superconducting magnet and become possibility.
Use GM refrigeration machine because the cooling of Conduction cooled magnet is main, refrigeration machine needs to safeguard, the cycle of the product maintenance of different manufacturers is generally different, and GM refrigeration machine generally needs to safeguard once at 10000 hours, and when safeguarding, difficulty is larger.Generally, needing when safeguarding cryocooler cooled magnet magnet to dismantle completely, refrigeration machine cold head being taken out, turns back to refrigeration machine producer and safeguard; Sometimes namely allow to realize on-site maintenance, by the restriction of On-the-spot factor, its maintenance effects also can weaken.Obtain a kind of more flexible refrigeration machine for cryocooler cooled superconducting magnet install and method for dismounting very necessary.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the object of this invention is to provide a kind of conduction cooling superconducting magnet refrigeration machine structure, having the advantages that structure is simple, easy to operate, maintenance cost is low.
To achieve these goals, the technical solution used in the present invention is:
A kind of conduction cooling superconducting magnet refrigeration machine structure, include the adpting flange be connected with refrigeration machine, adpting flange is connected with pivot flange by bellows, the outer Dewar of magnet is connected with pivot flange, the one-level cold head of refrigeration machine is connected with heat transfer component upper element, the lower end of heat transfer component upper element and the upper end of heat transfer component bottom are realized combining closely by pressure, the lower end of heat transfer component bottom is connected with the cold screen flange of magnet, refrigeration machine secondary cold head is connected with the top of two-stage heat transmission parts, the bottom of two-stage heat transmission parts and the top of two-stage heat transmission member supporting are realized combining closely by pressure, conduction copper braid over braid top is together with the lower weld of two-stage heat transmission member supporting, upper end and the two-stage heat transmission member supporting of support spring weld together, the lower end of support spring is fixing on a mounting board, mounting panel must ensure to install to be stablized, position is irremovable, mounting panel bottom uses conduction copper braid over braid to be connected with the winding of magnet.
Taper is processed in the lower end of described heat transfer component upper element, formed with the top of heat transfer component bottom and coordinate, its objective is when downward pressure is arranged at refrigeration machine top, together with the lower end of heat transfer component upper element closely cooperates with the upper end of heat transfer component bottom, form good heat conductive.
Taper is processed in the bottom of described two-stage heat transmission parts, formed with the top of two-stage heat transmission member supporting and coordinate, its objective is when downward pressure is arranged at refrigeration machine top, together with the bottom of two-stage heat transmission parts can closely cooperate with the top of two-stage heat transmission member supporting, form good heat conductive.
The left end of described pivot flange is provided with fixed screw, pad and holddown spring are assemblied in fixed bolt, by screwing this fixed screw, downward pressure is applied to refrigeration machine, make the upper end of the lower end of heat transfer component upper element and heat transfer component bottom, the gap on the bottom of two-stage heat transmission parts and the top of two-stage heat transmission member supporting forms and closely cooperate, form good heat conductive.
The beneficial effects of the utility model:
A kind of conduction cooling superconducting magnet refrigeration machine structure that the utility model provides, has the advantages that structure is simple, easy to operate, maintenance cost is low.By the installation of this structure, equipment idle time can be reduced, avoid high cost and excessive risk that on-site maintenance brings.Meanwhile, due to the replacement realizing refrigeration machine cold head in the short time can be realized, greatly can shortening the time of on-site maintenance and maintenance like this, to needing the superconducting magnet user of long-time non-stop run, there is higher using value.
Accompanying drawing explanation
Fig. 1 is refrigeration machine and assembly structure schematic diagram of the present invention.
Fig. 2 is the partial enlarged drawing of I in Fig. 1.
Fig. 3 is the partial enlarged drawing of II in Fig. 1.
In figure, 1-refrigeration machine, 2-heat transfer component upper element, 3-two-stage heat transmission parts, 4-adpting flange, 5-bellows, 6-pivot flange, 7-heat transfer component bottom, the cold screen flange of 8-magnet, the outer Dewar of 9-magnet, 10-two-stage heat transmission member supporting, 11-fixed screw, 12-pad, 13-holddown spring, 14-support spring, 15-conduction copper braid over braid, 16-mounting panel.
Embodiment
Below in conjunction with accompanying drawing, structural principle of the present invention and operation principle are described in further detail.
See Fig. 1, a kind of conduction cooling superconducting magnet refrigeration machine structure, include the adpting flange 4 be connected with refrigeration machine 1, adpting flange 4 is connected with pivot flange 6 by bellows 5, the outer Dewar 9 of magnet is connected with pivot flange 6 respectively, the one-level cold head of refrigeration machine 1 is connected with heat transfer component upper element 2, the lower end of heat transfer component upper element 2 and the upper end of heat transfer component bottom 7 are realized combining closely by pressure, the lower end of heat transfer component bottom 7 is connected with the cold screen flange 8 of magnet, refrigeration machine secondary cold head is connected with the top of two-stage heat transmission parts 3, the bottom of two-stage heat transmission parts 3 and the top of two-stage heat transmission member supporting 10 are realized combining closely by pressure, conduction copper braid over braid 15 top is together with the lower weld of two-stage heat transmission member supporting 10, upper end and the two-stage heat transmission member supporting 10 of support spring 14 weld together, the lower end of support spring 14 is fixed on mounting panel 16, mounting panel 16 must ensure to install to be stablized, position is irremovable.Mounting panel 16 bottom uses conduction copper braid over braid 15 to be connected with the winding of magnet.
The lower end of described heat transfer component upper element 2 is connected with the upper end of heat transfer component bottom 7, taper is processed in the lower end of heat transfer component upper element 2, formed with the top of heat transfer component bottom 7 and coordinate, its objective is when downward pressure is arranged at refrigeration machine top, together with the lower end of heat transfer component upper element 2 can closely cooperate with the upper end of heat transfer component bottom 7, form good heat conductive.
The bottom of described two-stage heat transmission parts 3 is connected with the top of two-stage heat transmission member supporting 10, taper is processed in the bottom of two-stage heat transmission parts 3, formed with the top of two-stage heat transmission member supporting 10 and coordinate, its objective is when downward pressure is arranged at refrigeration machine top, together with the bottom of two-stage heat transmission parts 3 can closely cooperate with the top of two-stage heat transmission member supporting 10, form good heat conductive.
The left end of described pivot flange 6 is provided with fixed screw 11, pad 12 and holddown spring 13 are assemblied in fixed bolt 11, by screwing this fixed screw, downward pressure is applied to refrigeration machine, make the upper end of the lower end of heat transfer component upper element 2 and heat transfer component bottom 7, the gap on the bottom of two-stage heat transmission parts 3 and the top of two-stage heat transmission member supporting 10 forms and closely cooperate, form good heat conductive.
Installation procedure of the present utility model:
One) the one-level cold head of refrigeration machine 1 is connected with bolt with heat transfer component upper element 2, the secondary cold head of refrigeration machine 1 is connected with the top of two-stage heat transmission parts 3;
Two) adpting flange 4 and bellows 5 and pivot flange 6 are welded together, form a whole, be connected with the outer Dewar 9 of bolt and magnet, between pivot flange 6 and the outer Dewar 9 of magnet, have O-ring seal;
Three) cold to heat transfer component bottom 7 and magnet screen flange 8 is connected with bolt;
Four) by conduction copper braid over braid 15 top together with the lower weld of two-stage heat transmission member supporting 10, support spring 14 upper end and two-stage heat transmission member supporting 10 weld together, support spring 14 lower end is welded on mounting panel 16, and mounting panel 16 must ensure to install to be stablized, and position is irremovable;
Five) mounting panel 16 bottom uses longer conduction copper braid over braid 15 to be connected with the winding of magnet;
Six) in the parts that the parts inserting step two ~ step 5 of step one having been assembled has been assembled, by fixed screw 11, pad 12 and holddown spring 13 are assemblied in fixed bolt 11, by screwing this fixed screw, downward pressure is applied to refrigeration machine, make the upper end of the lower end of heat transfer component upper element 2 and heat transfer component bottom 7, the gap on the bottom of two-stage heat transmission parts 3 and the top of two-stage heat transmission member supporting 10 forms and closely cooperate, form good heat conductive.
Its disassembly procedure is:
One) fixed screw 11 is unscrewed, until take off pad 12 and holddown spring 13;
Two) low-angle slow circumvolve refrigeration machine 1, can upwards extract refrigeration machine 1 after refrigeration machine 1 loosens.
According to the installation method installation refrigeration machine structure of the conduction cooling superconducting magnet refrigeration machine provided; If superconducting magnet in use refrigeration machine 1 reach maintenance period or occur abnormal, according to the method for dismounting of above-mentioned conduction cooling superconducting magnet refrigeration machine refrigeration machine 1 directly can be extracted and carry out returning factory and safeguard or maintenance.
Claims (4)
1. a conduction cooling superconducting magnet refrigeration machine structure, it is characterized in that, include the adpting flange (4) be connected with refrigeration machine (1), adpting flange (4) is connected with pivot flange (6) by bellows (5), the outer Dewar (9) of magnet is connected with pivot flange (6), the one-level cold head of refrigeration machine (1) is connected with heat transfer component upper element (2), the lower end of heat transfer component upper element (2) and the upper end of heat transfer component bottom (7) are realized combining closely by pressure, the lower end of heat transfer component bottom (7) is connected with the cold screen flange (8) of magnet, refrigeration machine secondary cold head is connected with the top of two-stage heat transmission parts (3), the bottom of two-stage heat transmission parts (3) and the top of two-stage heat transmission member supporting (10) are realized combining closely by pressure, the top of conduction copper braid over braid (15) is together with the lower weld of two-stage heat transmission member supporting (10), upper end and the two-stage heat transmission member supporting (10) of support spring (14) weld together, the lower end of support spring (14) is fixed on mounting panel (16), mounting panel (16) position is irremovable, mounting panel (16) bottom uses conduction copper braid over braid (15) to be connected with the winding of magnet.
2. a kind of conduction cooling superconducting magnet refrigeration machine structure according to claim 1, is characterized in that, taper is processed in the lower end of described heat transfer component upper element (2), is formed closely cooperate with the top of heat transfer component bottom (7).
3. a kind of conduction cooling superconducting magnet refrigeration machine structure according to claim 1, is characterized in that, taper is processed in the bottom of described two-stage heat transmission parts (3), is formed closely cooperate with the top of two-stage heat transmission member supporting (10).
4. a kind of conduction cooling superconducting magnet refrigeration machine structure according to claim 1, it is characterized in that, the left end of described pivot flange (6) is provided with fixed screw (11), pad (12) and holddown spring (13) are assemblied in fixed bolt (11), by screwing this fixed screw, downward pressure is applied to refrigeration machine, makes the upper end of the lower end of heat transfer component upper element (2) and heat transfer component bottom (7), the gap on the bottom of two-stage heat transmission parts (3) and the top of two-stage heat transmission member supporting (10) forms and closely cooperate.
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| CN201420540160.0U CN204102660U (en) | 2014-09-19 | 2014-09-19 | A kind of conduction cooling superconducting magnet refrigeration machine structure |
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| CN201420540160.0U CN204102660U (en) | 2014-09-19 | 2014-09-19 | A kind of conduction cooling superconducting magnet refrigeration machine structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104200950A (en) * | 2014-09-19 | 2014-12-10 | 西安聚能超导磁体科技有限公司 | Conduction-cooled superconducting magnet refrigerating machine structure and mounting and dismounting method thereof |
| CN105758054A (en) * | 2016-03-25 | 2016-07-13 | 合肥迅即影像科技有限公司 | High-efficient replacement method for cooling core of Gifford-Mcmahon(GM) refrigerator |
| CN111183326A (en) * | 2017-10-12 | 2020-05-19 | 住友重机械工业株式会社 | Mounting structure and mounting method for cryogenic refrigerator |
| CN114974792A (en) * | 2022-06-28 | 2022-08-30 | 中国科学院高能物理研究所 | Liquid helium-free low-temperature excitation device for superconducting undulator |
-
2014
- 2014-09-19 CN CN201420540160.0U patent/CN204102660U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104200950A (en) * | 2014-09-19 | 2014-12-10 | 西安聚能超导磁体科技有限公司 | Conduction-cooled superconducting magnet refrigerating machine structure and mounting and dismounting method thereof |
| CN105758054A (en) * | 2016-03-25 | 2016-07-13 | 合肥迅即影像科技有限公司 | High-efficient replacement method for cooling core of Gifford-Mcmahon(GM) refrigerator |
| CN111183326A (en) * | 2017-10-12 | 2020-05-19 | 住友重机械工业株式会社 | Mounting structure and mounting method for cryogenic refrigerator |
| CN111183326B (en) * | 2017-10-12 | 2021-08-06 | 住友重机械工业株式会社 | Mounting structure and mounting method for cryogenic refrigerator |
| CN114974792A (en) * | 2022-06-28 | 2022-08-30 | 中国科学院高能物理研究所 | Liquid helium-free low-temperature excitation device for superconducting undulator |
| CN114974792B (en) * | 2022-06-28 | 2023-02-17 | 中国科学院高能物理研究所 | Liquid helium-free low-temperature excitation device for superconducting undulator |
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