CN209262623U - A kind of suspension arrangement of superconducting magnet - Google Patents
A kind of suspension arrangement of superconducting magnet Download PDFInfo
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- CN209262623U CN209262623U CN201821891472.0U CN201821891472U CN209262623U CN 209262623 U CN209262623 U CN 209262623U CN 201821891472 U CN201821891472 U CN 201821891472U CN 209262623 U CN209262623 U CN 209262623U
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- pull rod
- superconducting magnet
- extension tube
- suspension arrangement
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Abstract
The utility model embodiment discloses a kind of suspension arrangement of superconducting magnet, comprising: extension tube, flange and the pull rod for hollow pipe；The aperture of the top cover of the first end and low-temperature (low temperature) vessel of extension tube is fixedly connected, and the second end of extension tube is fixedly connected with the platform of flange, and the boss of flange is fixedly connected with the first end of pull rod, and the second end of pull rod is fixedly connected with the superconducting magnet for being built in low-temperature (low temperature) vessel.The utility model is by increasing extension tube on low-temperature (low temperature) vessel top cover, longer conduction distance can be provided for pull rod, to reduce the leakage heat of pull rod, and since pull rod is hollow shape, the moment of inertia of pull rod can be improved, and then the intensity of pull rod is improved, therefore the utility model can increase the anti-pressure ability of pull rod while reducing pull rod leakage heat.
Description
Technical field
The utility model relates to superconducting magnet field more particularly to a kind of suspension arrangements of superconducting magnet.
Background technique
For the superconducting magnet system of cryocooler cooled, basic structure includes cooled superconducting magnet, is super
Magnetizer provides the vacuum thermal insulation low temperature container of cold operation environment, superconducting magnet is fixed on to the dress of the suspension in low-temperature (low temperature) vessel
It sets, the components such as current feed, measurement lead for detecting superconducting magnet state for providing power supply for superconducting magnet.
It is fixed for being typically due to the parameter of pull rod of suspension arrangement itself, and in order to improve the stabilization of superconducting magnet system
Property by need to consider pull rod leakage heat and pull rod during transportation by fixation member effect exist teetertotter when
Pull rod intensity the two limitations therefore in order to improve the stability of superconducting magnet system, how to realize the low drain of pull rod simultaneously
Heat and the high-intensitive technical problem urgently to be resolved as those skilled in the art.
Utility model content
The utility model discloses a kind of suspension arrangements for surveying superconducting magnet, can increase while reducing pull rod leakage heat
The anti-pressure ability of pull rod.
The utility model provides a kind of suspension arrangement of superconducting magnet, comprising: extension tube, flange and the drawing for hollow pipe
Bar；
The aperture of the top cover of the first end and low-temperature (low temperature) vessel of the extension tube is fixedly connected, the second end of the extension tube with
The platform of the flange is fixedly connected, and the boss of the flange is fixedly connected with the first end of the pull rod, and the of the pull rod
Two ends are fixedly connected with the superconducting magnet for being built in the low-temperature (low temperature) vessel.
Preferably, the length of the extension tube is not less than 100mm, and the internal diameter of the extension tube is the outer diameter of the pull rod
3~5 times.
Preferably, the aperture welding of the top cover of the first end and low-temperature (low temperature) vessel of the extension tube, the second of the extension tube
The platform welding at end and the flange.
Preferably, the cross-sectional area of the internal diameter of the pull rod and the pull rod meets following relationship:
In formula, d is the internal diameter of pull rod, and S is the cross-sectional area of pull rod.
Preferably, a kind of suspension arrangement of superconducting magnet provided by the utility model further include: connecting rod；
The second end of the pull rod is fixedly connected with the first end of the connecting rod, the second end of the connecting rod with it is described
Superconducting magnet is fixedly connected.
Preferably, the first end inner surface of the pull rod, the boss outer surface of the flange are provided with first to match
Screw thread.
Preferably, the second end inner surface of the pull rod, the entire connecting rod outer surface be provided with the to match
Two screw threads.
Preferably, the second end of the connecting rod passes through the hole for hoist of the superconducting magnet, and is fixed by nut.
Preferably, the length of first screw thread is 15~30mm.
Preferably, the length of the connecting rod is 80m~100mm.
As can be seen from the above technical solutions, the utility model embodiment has the advantage that
The utility model provides a kind of suspension arrangement of superconducting magnet, comprising: extension tube, flange and the drawing for hollow pipe
Bar；The aperture of the top cover of the first end and low-temperature (low temperature) vessel of extension tube is fixedly connected, and the second end of extension tube and the platform of flange are solid
Fixed connection, the boss of flange are fixedly connected with the first end of pull rod, the second end of pull rod and the superconducting magnetic for being built in low-temperature (low temperature) vessel
Body is fixedly connected.The utility model can provide longer conduction by increasing extension tube on low-temperature (low temperature) vessel top cover for pull rod
To reduce the leakage heat of pull rod, and since pull rod is hollow shape, the moment of inertia of pull rod can be improved, and then improve pull rod in distance
Intensity, therefore the utility model can reduce pull rod leakage heat while increase pull rod anti-pressure ability.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is a kind of structural representation of one embodiment of suspension arrangement for surveying superconducting magnet provided by the utility model
Figure；
Fig. 2 is the structural schematic diagram of flange；
Fig. 3 is the structural schematic diagram of pull rod.
Specific embodiment
The utility model embodiment discloses a kind of suspension arrangement of superconducting magnet, can be while reducing pull rod leakage heat
Increase the anti-pressure ability of pull rod.
It please refers to Fig.1 to Fig.3, an a kind of reality of the suspension arrangement of the superconducting magnet provided in the utility model embodiment
Applying example includes: extension tube 3, flange 4 and the pull rod 5 for hollow pipe；
The first end of extension tube 3 is fixedly connected with the aperture of the top cover of low-temperature (low temperature) vessel 2, the second end and flange 4 of extension tube 3
Platform be fixedly connected, the boss of flange 4 is fixedly connected with the first end of pull rod 5, the second end of pull rod 5 and be built in low temperature appearance
The superconducting magnet 1 of device 2 is fixedly connected.
The utility model on Conventional cryogenic container cover plate by increasing an extension component, and by general solid pull rod
It is revised as tubular structure, increases the anti-pressure ability of pull rod while reducing and leaking heat along pull rod.
In the present embodiment, extension tube 3, which is used to increase conducting path for pull rod 5, provides vacuum environment, material and low temperature
Container 2 is identical, is all made of stainless steel production under normal circumstances.Extension tube 3 is hollow pipe, can be a variety of shapes such as rectangle, circle
Shape, in practical applications can be preferably circular.The wall thickness of extension tube 3 is needed according to low-temperature (low temperature) vessel 2 and along the strong of 5 pulling force of pull rod
Degree is checked, and check method is the universal method in the design of low-temperature (low temperature) vessel 2, is the known normal of professional and technical personnel in the field
Know, does not illustrate herein.
The length of extension tube 3 can need to be designed according to practical heat of leaking, and longer extension tube 3 can mention for pull rod 5
For longer conduction distance, so as to more reduce the leakage heat of pull rod 5, but too long extension tube 3 will affect the outer of device
It sees, the installation of other components above 2 cover board of low-temperature (low temperature) vessel may be influenced, when extension tube 3 is not less than 100mm long under normal conditions just
Preferable effect can be played, the internal diameter of extension tube 3, which generally takes 3-5 times of 5 diameter of internal tie, can meet use, too small
Internal diameter be not easy to install, excessive internal diameter is by wasting space.The lower end (first end) of extension tube 3 is fixed on by welding manner
The tapping of 2 cover board of low-temperature (low temperature) vessel, the upper end (second end) for extending 3 pipes are fixed by welding manner with upper flange 4.
In the present embodiment, flange 4 is used to for pull rod 5 being fixed on 3 top of extension tube, and material is identical as extension tube 3, and one
As in the case of be all made of stainless steel production.Flange 4 is a projection shape, the upper pipes of platform 41 shape and extension tube 3 of flange 4
Mouth matches, and when 3 upper end tube nozzle of extension tube is round, platform 41 is also circle.The thickness of platform 41 need to be according to low-temperature (low temperature) vessel 2
Check determination is carried out with the intensity along 5 pulling force of pull rod, check method is the universal method in the design of low-temperature (low temperature) vessel 2.Flange 4 it is convex
42 outer surface of platform, pull rod 5 indoor temperature end (first end) inner surface be machined with the first screw thread to match, for solid after being cooperated
Fixed, the first reach is usually that 15-30mm can be met the requirements.
In the present embodiment, pull rod 5 is hollow pipe, for hanging cooled superconducting magnet 1.To reduce along pull rod 5
Leakage heat can choose as the nonmetallic materials production of low drain heat, such as glass reinforced plastic, carbon fiber bar.In comparison, glass steel
Expect that material is easy to process and low in cost, therefore is most widely used in superconducting device.Diameter, wall thickness and the quantity of pull rod 5
It is determined according to the weight and requirement that are fixed superconducting magnet 1, if 5 quantity of pull rod that conventional equipment uses is for N, sectional area
S, then 5 quantity of pull rod in the utility model is equally chosen as N, sectional area also remains S.
Since fixed part is there may be teetertottering during transportation, pull rod intensity at this time is by the feelings that are pressurized as follows
Critical force Fcr description under condition:
In formula, E is the elasticity modulus of material, and I is the moment of inertia of pull rod, and l indicates the length of pull rod.
According to above formula as can be seen that in the case where material therefor and fixed rod length, and the compression critical force of pull rod
It is directly proportional to the moment of inertia of cross section.
Due to the measuring body critical force F of pull rod 5crIt is directly proportional to the moment of inertia I of 5 cross section of pull rod, when sectional area is S, often
The moment of inertia for advising round pull rod 5 is I=S2/(4π).When using the annular pull rod 5 of same sectional area S, if 5 internal diameter of pull rod is
D, then its moment of inertia I=S2/(4π)+Sd2/ 8, it is seen that with the increase of 5 internal diameter of pull rod, the moment of inertia is consequently increased, usual situation
Under can choose 5 internal diameter of pull rodThe length of pull rod 5 is that the length of pull rod 5 in conventional design adds extension tube 3
Length, i.e., as 5 length of conventional design pull rod be l0, 3 length of extension tube is l1, then 5 total length of pull rod is l0+l1.For convenience of with
Upper flange 4 and connecting rod 6 are attached, and the indoor temperature end 51 (first end) and low-temperature end 52 (second end) of pull rod 5 are machined with respectively
First screw thread, the second screw thread, and cooperated between indoor temperature end 51 and the boss 42 of flange by the first screw thread, low-temperature end 52 with
Cooperated between the first end of connecting rod 6 by the second screw thread.
In the present embodiment, connecting rod 6 is generally configured to full thread structure, can be using high-intensitive metal and nonmetallic
Material production, using more for stainless steel and glass reinforced plastic.The first end of connecting rod 6 and the low-temperature end 52 of pull rod 5 pass through second
Screw thread matches.The length of connecting rod 6 is determined according to the specific location for being fixed superconducting magnet 1, is connected under normal circumstances
The length of bar 6, which reaches 80mm~100mm long, to be met the requirements.In being typically designed, the second end of connecting rod 6 is directly through being consolidated
The hole for hoist for determining superconducting magnet 1, is then fixed by nut.
Below by way of a concrete application scene to it is provided by the utility model it is a kind of survey superconducting magnet suspension arrangement into
Row further instruction, the scene include:
Extension tube 3 is made of 304 stainless steel of SUS, is circular pipe.It is checked according to vacuum and pulling force, wall thickness 8mm,
It is limited to 2 upper space of low-temperature (low temperature) vessel, the Design of length of extension tube 3 is 100mm.According to the outer dimension of pull rod 5, extension tube 3
Internal diameter is selected as about 3 times of 5 outer diameter of pull rod, having a size of 50mm.Extension tube lower end is fixed on low-temperature (low temperature) vessel 2 by welding manner
Above upper cover plate, the quantity of extension tube 3 is 4.
Flange 4 is made of 304 stainless steel of SUS, and quantity is 4.Through design & check, platform 41 with a thickness of 12mm, put down
The outer diameter of platform 41 is identical as the outer diameter of extension tube 3, is 66mm.Screw thread of the boss 42 using M12, reach 16mm.Method
41 coaxial welding of platform of orchid 4 is attached in the top of extension tube 3, boss 42 and the threaded upper ends of pull rod 5.
Corresponding conventional design pull rod 5 is made of glass reinforced plastic, and quantity is 4, length 100mm, diameter 10mm.Cause
This, according to above-mentioned calculation method it is found that pull rod 5 internal diameter d=10mm, outer diameter 14mm, the resistance to compression of annular pull rod 5 is critical at this time answers
Power increases to 3 times of conventional tie rod 5.At the same time, the running temperature of superconducting magnet 1 is 4.2K, and room temperature environment temperature is 300K,
Then the leakage heat of conventional suspended structure is 0.78W.When using annular pull rod 5, the leakage thermal change of the suspension mechanism is 0.39W.It is main at present
The 4.2K warm area refrigeration machine second level cold head refrigeration work consumption of stream business application is only 1.5W, therefore reduced leakage heat has important meaning
Justice.
Connecting rod 6 is made of glass reinforced plastic, is 4 M12 full thread structures, length 80mm.The upper end is low with pull rod 5
Warm end 52 is fixed by screw thread, and the other end passes through the hole for hoist of superconducting magnet 1, is fixed by the nut of M12.
The utility model provides a kind of suspension arrangement of superconducting magnet, comprising: extension tube, flange and the drawing for hollow pipe
Bar；The aperture of the top cover of the first end and low-temperature (low temperature) vessel of extension tube is fixedly connected, and the second end of extension tube and the platform of flange are solid
Fixed connection, the boss of flange are fixedly connected with the first end of pull rod, the second end of pull rod and the superconducting magnetic for being built in low-temperature (low temperature) vessel
Body is fixedly connected.The utility model can provide longer conduction by increasing extension tube on low-temperature (low temperature) vessel top cover for pull rod
To reduce the leakage heat of pull rod, and since pull rod is hollow shape, the moment of inertia of pull rod can be improved, and then improve pull rod in distance
Intensity, therefore the utility model can reduce pull rod leakage heat while increase pull rod anti-pressure ability.
A kind of suspension arrangement of superconducting magnet provided by the utility model is described in detail above, for ability
The those skilled in the art in domain have in specific embodiments and applications based on the idea of the embodiment of the present invention
Change place, in conclusion the content of the present specification should not be construed as a limitation of the present invention.
Claims (10)
1. a kind of suspension arrangement of superconducting magnet characterized by comprising extension tube, flange and the pull rod for hollow pipe；
The aperture of the top cover of the first end and low-temperature (low temperature) vessel of the extension tube is fixedly connected, the second end of the extension tube with it is described
The platform of flange is fixedly connected, and the boss of the flange is fixedly connected with the first end of the pull rod, the second end of the pull rod
It is fixedly connected with the superconducting magnet for being built in the low-temperature (low temperature) vessel.
2. the suspension arrangement of superconducting magnet according to claim 1, which is characterized in that the length of the extension tube is not less than
100mm, and the internal diameter of the extension tube is 3~5 times of the outer diameter of the pull rod.
3. the suspension arrangement of superconducting magnet according to claim 2, which is characterized in that the first end of the extension tube with it is low
The aperture of the top cover of warm container is welded, the platform welding of the second end of the extension tube and the flange.
4. the suspension arrangement of superconducting magnet according to claim 1, which is characterized in that the internal diameter of the pull rod and the drawing
The cross-sectional area of bar meets following relationship:
In formula, d is the internal diameter of pull rod, and S is the cross-sectional area of pull rod.
5. the suspension arrangement of superconducting magnet according to claim 4, which is characterized in that further include: connecting rod；
The second end of the pull rod is fixedly connected with the first end of the connecting rod, the second end of the connecting rod and the superconduction
Magnet is fixedly connected.
6. the suspension arrangement of superconducting magnet according to claim 5, which is characterized in that table in the first end of the pull rod
Face, the flange boss outer surface be provided with the first screw thread to match.
7. the suspension arrangement of superconducting magnet according to claim 6, which is characterized in that table in the second end of the pull rod
Face, entirely the outer surface of the connecting rod is provided with the second screw thread to match.
8. the suspension arrangement of superconducting magnet according to claim 7, which is characterized in that the second end of the connecting rod passes through
The hole for hoist of the superconducting magnet, and fixed by nut.
9. the suspension arrangement of superconducting magnet according to claim 8, which is characterized in that the length of first screw thread is 15
~30mm.
10. the suspension arrangement of superconducting magnet according to claim 9, which is characterized in that the length of the connecting rod is 80m
~100mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821891472.0U CN209262623U (en) | 2018-11-16 | 2018-11-16 | A kind of suspension arrangement of superconducting magnet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821891472.0U CN209262623U (en) | 2018-11-16 | 2018-11-16 | A kind of suspension arrangement of superconducting magnet |
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| CN209262623U true CN209262623U (en) | 2019-08-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109357139A (en) * | 2018-11-16 | 2019-02-19 | 广东电网有限责任公司 | A kind of suspension arrangement of superconducting magnet |
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2018
- 2018-11-16 CN CN201821891472.0U patent/CN209262623U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109357139A (en) * | 2018-11-16 | 2019-02-19 | 广东电网有限责任公司 | A kind of suspension arrangement of superconducting magnet |
| CN109357139B (en) * | 2018-11-16 | 2024-08-20 | 广东电网有限责任公司 | Suspension device of superconducting magnet |
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