CN210834071U - Superconducting magnet vibration impact test system - Google Patents
Superconducting magnet vibration impact test system Download PDFInfo
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- CN210834071U CN210834071U CN201921690480.3U CN201921690480U CN210834071U CN 210834071 U CN210834071 U CN 210834071U CN 201921690480 U CN201921690480 U CN 201921690480U CN 210834071 U CN210834071 U CN 210834071U
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Abstract
The utility model relates to a superconducting technology and dynamics technical field disclose a superconducting magnet vibration impact test system. The system comprises a vibration test bed, a vibration test bed interface, a first test tool interface, a test tool, a second test tool interface, a superconducting magnet and a connecting piece, wherein the first test tool interface is arranged at the bottom of the test tool, the second test tool interface is arranged on the side surface of the test tool, the connecting piece is arranged on the superconducting magnet, the test tool is connected with the vibration test bed through the vibration test bed interface and the first test tool interface, the superconducting magnet is connected with the test tool through the second test tool interface and the connecting piece, and the second test tool interface is away from the upper surface of the vibration test bed by a preset distance. Therefore, the electromagnetic and dynamic related performances of the superconducting magnet under low-temperature and excitation conditions and the volatilization condition of the superconducting magnet refrigerating medium under vibration and impact conditions can be examined through the vibration test bed.
Description
Technical Field
The utility model relates to a superconducting technology and dynamics technical field especially relate to a superconducting magnet vibration impact test system.
Background
The superconducting magnet has the advantages of large generated magnetic field, small volume, light weight, low loss and the like, and is often applied to ultrahigh-speed environments, such as ultrahigh-speed maglev trains, ultrahigh-speed electromagnetic ejection, high-speed three-dimensional reservoirs and the like. For example, in a superconducting linear motor in an ultrahigh-speed maglev train, the superconducting magnet is a rotor part of the superconducting linear motor, and a magnetic field generated by the superconducting magnet interacts with a magnetic field generated by a stator part of the linear motor to generate huge thrust in the superconducting magnet, so that the superconducting magnet is rapidly pushed forward. In the process of rapid motion of the superconducting magnet, the superconducting magnet is affected by electromagnetic force fluctuation or track irregularity, so that the superconducting magnet is subjected to electromagnetic or mechanical vibration of different degrees, and particularly in ultrahigh-speed electromagnetic ejection, the superconducting magnet needs to be braked within a very short time, so the superconducting magnet is often subjected to electromagnetic impact load.
For the superconducting magnet cooled by the immersion of the refrigerating medium, the vibration and impact environment can bring the following influences to the superconducting magnet: 1) the volatilization of a refrigeration medium can be accelerated by vibration and impact, particularly for a low-temperature superconducting magnet soaked by liquid helium, the faster the volatilization of the refrigeration medium is, the higher the quenching possibility is; 2) when the superconducting magnet is subjected to large vibration and impact, the structural frequency response of the superconducting magnet is abnormal, and even the structure is irreversibly damaged, so that the magnet is quenched finally. In order to examine the dynamic environment adaptability of the superconducting magnet under vibration and impact, verify the reasonability and correctness of the structure design and process of the superconducting magnet and examine the volatilization condition of a refrigeration medium under vibration and impact, a vibration impact test is required to be carried out on the superconducting magnet, particularly under the excitation condition.
However, no relevant test device in the prior art can realize the vibration impact test of the superconducting magnet under the excitation condition.
SUMMERY OF THE UTILITY MODEL
The utility model provides a superconducting magnet vibration impact test system can solve among the prior art unable superconducting magnet under the excitation and carry out vibration impact test's technical problem.
The utility model provides a superconducting magnet vibration impact test system, wherein, this system includes vibration test bench, vibration test bench interface, first experimental frock interface, experimental frock, the experimental frock interface of second, superconducting magnet and connecting piece, first experimental frock interface sets up the bottom of experimental frock, the experimental frock interface of second sets up the side of experimental frock, the connecting piece sets up on the superconducting magnet, through vibration test bench interface with first experimental frock interface will experimental frock with the vibration test bench is connected, through experimental frock interface of second and connecting piece will the superconducting magnet with experimental frock is connected, the experimental frock interface of second with the upper surface of vibration test bench is at a predetermined distance apart.
Preferably, the test tool is in a square or rectangular parallelepiped shape.
Preferably, the cross section of the test tool is trapezoidal or triangular.
Preferably, the interior of the test tool is of a hollow structure.
Preferably, the first order natural frequency of the test tool is at least 3 times or more of the first order natural frequency of the superconducting magnet.
Preferably, the vibration test bed comprises a horizontal vibration test bed and a vertical vibration test bed, the vibration test bed interface comprises a horizontal vibration test bed interface and a vertical vibration test bed interface, and the first test tool interface comprises a first horizontal test tool interface and a first vertical test tool interface.
Preferably, the vibration test bed interface and the first test tool interface are threaded holes.
Preferably, the connecting piece and the second test tool interface are fixed in a threaded connection or welding mode.
According to the technical scheme, the test tool can be connected with the vibration test bed through the vibration test bed interface and the first test tool interface, the superconducting magnet is connected with the test tool through the second test tool interface and the connecting piece, and the second test tool interface is away from the upper surface of the vibration test bed by a preset distance. Therefore, the electromagnetic and dynamic related performances of the superconducting magnet under low-temperature and excitation conditions and the volatilization condition of the superconducting magnet refrigerating medium under vibration and impact conditions can be examined through the vibration test bed, so that the superconducting magnet has a certain height from the vibration test bed, and the magnetic field of the superconducting magnet can be prevented from directly influencing the vibration test bed.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 shows a schematic structural diagram of a superconducting magnet vibration impact test system according to an embodiment of the present invention;
fig. 2 shows a schematic front view of a test tool of a superconducting magnet vibration impact test system according to an embodiment of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Fig. 1 shows a schematic structural diagram of a superconducting magnet vibration impact test system according to an embodiment of the present invention.
As shown in fig. 1, the embodiment of the present invention provides a superconducting magnet vibration impact test system, wherein, the system comprises a vibration test bed 1, a vibration test bed interface 2, a first test tool interface 3, a test tool 4, a second test tool interface 5, a superconducting magnet 6 and a connecting piece 7, the first test tool interface 3 is arranged at the bottom of the test tool 4, the second test tool interface 5 is arranged on the side surface of the test tool, the connecting piece 7 is arranged on the superconducting magnet 6, the test fixture 4 is connected with the vibration test bed 1 through the vibration test bed interface 2 and the first test fixture interface 3, the superconducting magnet 6 is connected with the test tool 4 through the second test tool interface 5 and a connecting piece 7, the second test tool interface 5 is away from the upper surface of the vibration test bed 1 by a preset distance.
The load excitation of the vibration test bed can be transmitted to the superconducting magnet through the test tool, and the contact surface of the test tool and the vibration test bed is as smooth as possible, so that the load excitation is not attenuated at the position; under the condition of ensuring that load transfer is not distorted, the test tool can attenuate the magnetic field of the superconducting magnet to a range which can be borne by the vibration test bed (after the superconducting magnet serving as a test object flows through, a larger magnetic field can be generated, and the magnetic field can be attenuated by the test tool).
For example, the material of experimental frock 4 can be for materials such as almag or stereoplasm aluminium, also can be for the lower material of other densities, the utility model discloses do not prescribe a limit to this. According to the output excitation of the vibration test bed, the test tool can realize a vibration test and an impact test, and if the load application time in the vibration test is short enough, the test tool can be regarded as the impact test.
According to the technical scheme, the test tool can be connected with the vibration test bed through the vibration test bed interface and the first test tool interface, the superconducting magnet is connected with the test tool through the second test tool interface and the connecting piece, and the second test tool interface is away from the upper surface of the vibration test bed by a preset distance. Therefore, the electromagnetic and dynamic related performances of the superconducting magnet under low-temperature and excitation conditions and the volatilization condition of the superconducting magnet refrigerating medium under vibration and impact conditions can be examined through the vibration test bed, so that the superconducting magnet has a certain height from the vibration test bed, and the magnetic field of the superconducting magnet can be prevented from directly influencing the vibration test bed.
According to the utility model relates to an embodiment, the shape of experimental frock 4 can be square or cuboid.
Fig. 2 shows a schematic front view of a test tool of a superconducting magnet vibration impact test system according to an embodiment of the present invention.
Alternatively, according to an embodiment of the present invention, the cross section of the test fixture 4 may be trapezoidal or triangular (as shown in fig. 2).
Namely, the cube or the cuboid can be changed into a structure with a trapezoidal or triangular cross section, so that the quality of the test tool can be reduced to at least half of the original quality, the surface area of the lower surface of the test tool does not need to be changed, and enough vibration test bed interfaces can be still covered and the connection strength can be guaranteed.
In the case where the cross section of the test fixture 4 is triangular, the test fixture 4 may have a wedge shape, for example.
According to the utility model relates to an embodiment, experimental frock 4 is inside to be hollow structure (hollow frame structure).
Therefore, the mass of the test tool can be further reduced, the light weight and the small-size design can be realized as far as possible, and the vibration and impact magnitude of the test can be improved.
Due to the light weight, the test tool can carry out a large-magnitude vibration impact test, especially an impact test, under the condition of a certain thrust of the vibration test bed. For a high dynamic superconducting magnet, the superconducting magnet sometimes bears an impact load of more than 30g in 10ms, and the quality requirement of a large-acceleration impact test on a test tool is high, so that the smaller the quality of the test tool is, the better the test tool is under the condition of meeting the requirement on the rigidity strength.
The utility model discloses in, no matter what kind of form shape is adopted to experimental frock, the experimental frock interface of second that is used for being connected with the superconducting magnet that sets up on it all satisfy with vibration test bench 1's upper surface is at a predetermined distance apart to prevent that the magnetic field of superconducting magnet from influencing vibration test bench mesa.
Wherein the predetermined distance is a distance that can reduce the influence of the magnetic field on the vibration test stand to a range acceptable for the vibration test stand.
For example, by calculating the relationship between the magnetic field and the distance of a racetrack superconducting coil of a certain size and an ampere-turn number of 700kAt, it can be found that the magnetic field decreases rapidly as the distance increases. When the magnetic field is less than 50Gs, the vibration test table is not affected, namely, the distance between the lower surface of the superconducting coil and the table top of the vibration table is at least 1000 mm. Correspondingly, the preset distance is at least 1000mm plus the distance between the lower surface of the superconducting coil and the second test tool interface.
It will be appreciated by persons skilled in the art that the above examples are illustrative only and are not intended to limit the invention. The sizes of the magnetic fields generated by different superconducting coils and ampere-turns are different, so that the distance between the lower surface of the superconducting coil and the table top of the vibration table is different.
According to an embodiment of the present invention, the first order natural frequency of the test fixture 4 is at least 3 times or more the first order natural frequency of the superconducting magnet 6.
Therefore, resonance between the test tool and the superconducting magnet can be prevented.
It should be understood by those skilled in the art that the description of the shape configuration of the test tool in the above embodiments is merely exemplary, and the present invention is not limited thereto. Any other shape configuration that satisfies the predetermined distance and natural frequency requirements may be applied to the present invention.
According to the utility model relates to an embodiment, vibration test bench 1 can include horizontal vibration test bench and vertical vibration test bench, vibration test bench interface 2 can include horizontal vibration test bench interface and vertical vibration test bench interface, first experimental frock interface 3 can include first horizontal test frock interface and first vertical test frock interface.
That is, the first horizontal test tool interface is matched with the horizontal vibration test bed interface, and the first vertical test tool interface is matched with the vertical vibration test bed interface. If the test tool is connected with the horizontal vibration table, the interface of the test tool and the interface of the vertical vibration table can be reserved, and vice versa.
The vibration test bed vibrates the vibration test bed surface back and forth according to the vertical and horizontal directions by means of electromagnetic force, and can be divided into a vertical vibration test bed and a horizontal vibration test bed according to different vibration directions. The index for measuring the measuring range of the vibration test bed is thrust, the thrust is commonly used in 10t and 35t vibration test beds, and according to the F ═ ma, the thrust is related to the mass and acceleration index of the superconducting magnet (including the test tool). Under the condition that the thrust of the vibration test bed is constant, the acceleration of the test object is smaller when the mass is larger. Conversely, the mass of the test object is ensured to be small as much as possible to meet the requirement of large acceleration input.
For example, the vibration testing stand may be made of nonmagnetic aluminum alloy or other materials. The number of the first test tool interfaces 3 can be as many as possible and are uniformly distributed on the lower surface of the test tool. Specific quantity can be decided according to surface area under the experimental frock, the utility model discloses do not prescribe a limit to this.
In addition, vibration test platform 1 can also include the three-phase shaking table, vibration test platform interface 2 can also include the three-phase vibration test platform interface, first experimental frock interface 3 can also include with the first three-phase experimental frock interface of three-phase vibration test platform interface adaptation.
That is, when the test fixture needs to be connected with the three-phase vibration table, the test fixture and the three-phase vibration table are connected with each other in a matching manner through the first three-phase test fixture interface.
In other words, when the test tool is connected with the three-phase vibrating table, interfaces of the test tool, the horizontal vibrating table and the vertical vibrating table can be reserved; when the test tool is connected with the horizontal vibration table, interfaces of the test tool, the three-phase vibration table and the vertical vibration table can be reserved; and when the test tool is connected with the vertical vibration table, interfaces of the test tool, the three-phase vibration table and the horizontal vibration table can be reserved.
According to the utility model relates to an embodiment, vibration test bench interface 2 with first experimental frock interface 3 all can be the screw hole (for example, M14 and M22).
That is, the test fixture 4 and the vibration test bed 1 can be rigidly and fixedly connected by screwing the vibration test bed interface 2 and the first test fixture interface 3, so that the load excitation of the vibration test bed surface can be transmitted to the test object without attenuation.
According to the utility model relates to an embodiment, connecting piece 7 with experimental frock interface 5 of second can adopt threaded connection or welding form fixed.
Therefore, the connection rigidity strength of the test tool and the superconducting magnet can be ensured.
It should be understood by those skilled in the art that although the above description is directed to a superconducting magnet as a test piece for vibration impact test, the present invention is not limited thereto, and for example, any magnetic test object may use the test tool to perform vibration impact test, such as a permanent magnet, a charged conventional coil, etc.
The utility model discloses foretell superconducting magnet vibration impact test system can carry out the superconducting magnet vibration impact test under the excitation condition, can examine the volatility of refrigerant under vibration and impact condition, can compatible horizontal vibration platform and vertical vibration platform, can carry out the vibration and the impact test of three direction and can carry out the vibration test of superconducting magnet and the impact test of high order of magnitude.
It can be seen from the above embodiment that the utility model discloses foretell superconducting magnet vibration impact test system can reduce the influence of superconducting magnet magnetic field to the vibration test platform, can really transmit the load excitation of vibration test platform to the superconducting magnet again on, and simple structure and cost are lower.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A superconducting magnet vibration impact test system is characterized by comprising a vibration test bed (1), a vibration test bed interface (2), a first test tool interface (3), a test tool (4), a second test tool interface (5), a superconducting magnet (6) and a connecting piece (7), wherein the first test tool interface (3) is arranged at the bottom of the test tool (4), the second test tool interface (5) is arranged at the side surface of the test tool, the connecting piece (7) is arranged on the superconducting magnet (6), the test tool (4) is connected with the vibration test bed (1) through the vibration test bed interface (2) and the first test tool interface (3), and the superconducting magnet (6) is connected with the test tool (4) through the second test tool interface (5) and the connecting piece (7), the second test tool interface (5) is away from the upper surface of the vibration test bed (1) by a preset distance.
2. The system according to claim 1, characterized in that the test fixture (4) is in the shape of a cube or cuboid.
3. The system according to claim 1, characterized in that the cross section of the test tool (4) is trapezoidal or triangular.
4. The system according to claim 2 or 3, characterized in that the interior of the test tool (4) is a hollow structure.
5. The system according to claim 4, wherein the first order natural frequency of the test fixture (4) is at least 3 times or more the first order natural frequency of the superconducting magnet (6).
6. The system according to claim 4, wherein the vibration test stand (1) comprises a horizontal vibration test stand and a vertical vibration test stand, the vibration test stand interface (2) comprises a horizontal vibration test stand interface and a vertical vibration test stand interface, and the first test tool interface (3) comprises a first horizontal test tool interface and a first vertical test tool interface.
7. The system according to claim 6, characterized in that the vibration test stand interface (2) and the first test fixture interface (3) are both threaded holes.
8. The system according to claim 6, characterized in that the connecting piece (7) is fixed with the second test tool interface (5) in a threaded connection or a welding manner.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921690480.3U CN210834071U (en) | 2019-10-10 | 2019-10-10 | Superconducting magnet vibration impact test system |
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| CN201921690480.3U CN210834071U (en) | 2019-10-10 | 2019-10-10 | Superconducting magnet vibration impact test system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112649167A (en) * | 2019-10-10 | 2021-04-13 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Superconducting magnet vibration impact test system |
| CN114114104A (en) * | 2021-11-19 | 2022-03-01 | 中车长春轨道客车股份有限公司 | Method and device for determining functional integrity of superconducting magnet |
-
2019
- 2019-10-10 CN CN201921690480.3U patent/CN210834071U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112649167A (en) * | 2019-10-10 | 2021-04-13 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Superconducting magnet vibration impact test system |
| CN114114104A (en) * | 2021-11-19 | 2022-03-01 | 中车长春轨道客车股份有限公司 | Method and device for determining functional integrity of superconducting magnet |
| WO2023087407A1 (en) * | 2021-11-19 | 2023-05-25 | 中车长春轨道客车股份有限公司 | Method and apparatus for determining function integrity degree of superconducting magnet |
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