CN203560278U - Load-bearing hanger rod for low-heat conduction high-strength superconducting magnet - Google Patents
Load-bearing hanger rod for low-heat conduction high-strength superconducting magnet Download PDFInfo
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- CN203560278U CN203560278U CN201320676735.7U CN201320676735U CN203560278U CN 203560278 U CN203560278 U CN 203560278U CN 201320676735 U CN201320676735 U CN 201320676735U CN 203560278 U CN203560278 U CN 203560278U
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- hanger rod
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Abstract
The utility model discloses a load-bearing hanger rod for a low-heat conduction high-strength superconducting magnet. The load-bearing hanger rod comprises a glass fiber rod with the diameter of 6mm and two identical metal connectors, wherein the two ends of the glass fiber rod with the diameter of 6mm are inserted in through holes with the diameters of 6mm of the metal connectors, one ends of the metal connectors are provided with external threads, and the other ends of the metal connectors are hole shrinkage deformation sections. The load-bearing hanger rod has relatively high strength and very low heat conduction property and is capable of substantially reducing conduction heat leakage of the superconducting magnet.
Description
Technical field
The utility model is to be applied in superconducting magnet equipment, connects the load-bearing suspension rod of superconducting magnet and room temperature parts.
Background technique
Superconducting magnet operates in low temperature environment, its performance is also closely related with temperature, general adopting liquid helium immersion way or Cryo Refrigerator to carry out cooling and that it is maintained is temperature required, is cooling load or the liquid helium evaporation rate that reduces superconducting magnet, must reduce as far as possible it and leak heat.Load-bearing suspension rod is the indispensable parts of superconducting magnet equipment, it is suspended in Dewar superconducting magnet to reduce and extraneous contacting, because it is connecting superconducting magnet and room temperature parts and is having larger cross-section area simultaneously, the leakage heat of its generation is that in superconducting magnet, solid conduction is leaked hot principal mode, therefore be necessary it reasonably to design, in proof strength, reduce to greatest extent it and leak heat.
Existing most of load-bearing suspension rods adopt stainless steel material to need with proof strength, for reducing, leak heat, conventionally adopt following two kinds of methods: 1) in the joint of load-bearing suspension rod and superconducting magnet or Dewar, increase heat and cut off, as add epoxy packing ring and sleeve pipe etc.; 2) increase or extend thermally conductive pathways.Method one is comparatively simple, but because material thermal conductivity is higher, can only reduce to a certain extent its conductive heat leakage; Method two makes himself and Dewar structure become complicated, has also increased manufacture difficulty.
Model utility content
The technical problems to be solved in the utility model is to provide a kind of low heat conduction high strength superconducting magnet load-bearing suspension rod, and it has higher intensity and very low heat conduction, can significantly reduce the conductive heat leakage of superconducting magnet.
The technical solution of the utility model is as follows:
A kind of low heat conduction high strength superconducting magnet load-bearing suspension rod, include the 6 mm glass rod metal connecting head identical with two, the two ends of described 6 mm glass rods are inserted in 6 mm through holes of described metal connecting head, described metal connecting head is that diameter is the stainless steel bar of 12 mm, its one end is with outside thread, and the other end is necking deformation section.
Metal connecting head packs in compacting tool set after being heated to 200 ℃, then pushes compacting tool set with Rolling machines, thereby makes described metal connecting head compressive deformation and produce enclasping force with described glass stick end.Described compacting tool set is two 40 identical Cr blooms, and described 40 Cr bloom one sides are with semi-circular groove, and 40 Cr blooms described in two are combined and can form a circular trough.
The utility model adopts following methods to reach low heat conduction, high strength, manufacture purpose of design simple and easy to use:
(1), at home, glass rod has become business and cheap, this material has very low thermal conductivity and very high tensile strength, under room temperature, its tensile strength can reach 1000 MPa, the next intensity of low temperature is higher, during 150 K, its heat conductivity is only about 0.56 W/mK(and is about stainless 1/20), therefore adopt glass rod can greatly reduce conductive heat leakage as the material of main part of load-bearing suspension rod.
(2), because glass stick end can not carry out machining (otherwise can cause glass fibre fracture, cannot guarantee load), at its two ends, increase metal connecting head and solved the connectivity problem of glass rod with superconducting magnet or Dewar flange.
(3), have the softening of a little after glass stick end heating, make it easily deformable in pressing process, also can prevent from cracking because of compacting simultaneously.
(4), after compacting tool set is extruded and puts in place, the monolateral decrement of metal connecting head is 0.45 mm to the maximum, this decrement records by experiment, is greater than or less than this value and all can makes suspension rod load ability decline.
The test result that bears of the present utility model:
During test, the metal connecting head at load-bearing suspension rod two ends is fixed in pull test instrument, when pulling force reaches 800 kilograms, in the container of its one end, inject liquid nitrogen to simulate the temperature conditions of load-bearing suspension rod at superconducting magnet dewar, then continuing increases tensile load, until sliding failure appears in metal connecting head and glass rod.Many load-bearing suspension rods are tested and shown, the single tensile load that is greater than 1200 kilograms that bears.
The beneficial effects of the utility model:
The utility model is simple in structure, easy to use, the simple and favorable repeatability of technique, under the prerequisite of proof strength, significantly reduced the conductive heat leakage of superconducting magnet, reduced cooling load or the liquid helium evaporation rate of superconducting magnet equipment, can be widely used in various superconducting magnet equipment.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is that wherein suspension rod bears ' distance-power ' curve of test.
Embodiment
Referring to Fig. 1, Fig. 2, a kind of low heat conduction high strength superconducting magnet load-bearing suspension rod, include the 6 mm glass rod 1 metal connecting head 2 identical with two, described 6 mm glass rod 1 two ends are inserted in 6 mm through holes of described metal connecting head 2, described metal connecting head one end is with outside thread 3, and the other end is necking deformation section 4.
Metal connecting head 1 is heated to after 200 ℃ with heating tape, successively these two metal connecting heads 2 is packed in compacting tool set, then push compacting tool set with Rolling machines, remove the making that has completed a load-bearing suspension rod after compacting tool set.
Claims (1)
1. one kind low heat conduction high strength superconducting magnet load-bearing suspension rod, include the 6 mm glass rod metal connecting head identical with two, it is characterized in that: described 6 mm glass rod two ends are inserted in 6 mm through holes of described metal connecting head, described metal connecting head one end is with outside thread, and the other end is necking deformation section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320676735.7U CN203560278U (en) | 2013-10-29 | 2013-10-29 | Load-bearing hanger rod for low-heat conduction high-strength superconducting magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320676735.7U CN203560278U (en) | 2013-10-29 | 2013-10-29 | Load-bearing hanger rod for low-heat conduction high-strength superconducting magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203560278U true CN203560278U (en) | 2014-04-23 |
Family
ID=50510001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320676735.7U Expired - Fee Related CN203560278U (en) | 2013-10-29 | 2013-10-29 | Load-bearing hanger rod for low-heat conduction high-strength superconducting magnet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203560278U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067449A (en) * | 2015-08-01 | 2015-11-18 | 中国人民解放军国防科学技术大学 | Heat insulation apparatus capable of transmitting tension and pressure |
-
2013
- 2013-10-29 CN CN201320676735.7U patent/CN203560278U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067449A (en) * | 2015-08-01 | 2015-11-18 | 中国人民解放军国防科学技术大学 | Heat insulation apparatus capable of transmitting tension and pressure |
| CN105067449B (en) * | 2015-08-01 | 2017-12-05 | 中国人民解放军国防科学技术大学 | It is a kind of to transmit pulling force and the heat-proof device of pressure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140423 Termination date: 20171029 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |