CN114916797A - Display cabinet applying superconducting magnetic suspension technology - Google Patents
Display cabinet applying superconducting magnetic suspension technology Download PDFInfo
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- CN114916797A CN114916797A CN202210541685.5A CN202210541685A CN114916797A CN 114916797 A CN114916797 A CN 114916797A CN 202210541685 A CN202210541685 A CN 202210541685A CN 114916797 A CN114916797 A CN 114916797A
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- electromagnet
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
- A47F3/00—Show cases or show cabinets
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
- A47F5/00—Show stands, hangers, or shelves characterised by their constructional features
- A47F5/0081—Show stands or display racks with movable parts
- A47F5/0093—Show stands or display racks with movable parts movable in a substantially horizontal direction
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
- A47F5/00—Show stands, hangers, or shelves characterised by their constructional features
- A47F5/02—Rotary display stands
- A47F5/025—Rotary display stands having mechanical drive, e.g. turntables
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
- A47F5/00—Show stands, hangers, or shelves characterised by their constructional features
- A47F5/10—Adjustable or foldable or dismountable display stands
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Freezers Or Refrigerated Showcases (AREA)
Abstract
The invention relates to a display cabinet applying superconducting magnetic suspension technology, which comprises a frame, an electric control cabinet, an electromagnet array and a display stand. The electrical control cabinet is fixed on the lower part of the aluminum profile frame, and a controller, a power supply module and the like are arranged in the electrical control cabinet and used for controlling the electromagnet on the upper part. The electromagnet array is formed by closely arranging a plurality of electromagnets and is fully distributed on the upper part of the electric control cabinet; and a plurality of electromagnets which are close to each other and electrified in the electromagnet array form an electrified module. A cavity is arranged in the exhibition stand, and a superconductor is fixedly arranged in the cavity and filled with liquid nitrogen. The stand sets up on the upper portion of circular telegram module, and the upper portion of stand is used for placing the showpiece. When the exhibition is carried out, the controller in the electric control cabinet selects and sets different electrified modules to realize the movement and the rotation of the exhibition stand, and the current of the electromagnet of the electrified module is controlled to realize the lifting control of the exhibition stand.
Description
Technical Field
The invention relates to the technical field of magnetic suspension technology application, in particular to a display cabinet applying superconducting magnetic suspension technology.
Background
At present, a plurality of display cabinets applying the superconducting magnetic levitation technology can see that displayed objects float in the air, the floating display of the displayed objects can not be surprised, and more audiences can be attracted to watch the displayed objects. Superconducting magnetic suspensions consist of a superconductor and a magnet (e.g., a permanent magnet or an electromagnet). When the superconductor in the superconducting state moves in the external magnetic field of the magnet, the magnetic field applied to the superconductor changes, and according to Lenz's law, induced current can be caused in the superconductor to excite the magnetic field to resist the change of the external magnetic field, so that force resisting the movement of the superconductor is generated, and self-stable suspension is realized. When the technology is applied to the suspension display, the superconductor and the magnet are respectively arranged as the fixed component and the suspension component, and the displayed article is placed on the suspension component, so that the effect of the suspension display can be achieved.
In the prior art, the magnets are all single or multiple permanent magnets. Since the magnetic field of the permanent magnet is difficult to change easily, when the displayed article and the suspension component are placed stably, the suspension component is limited to the equilibrium point of the suspension and cannot move. In a special case, where the permanent magnet is cylindrical, the magnetic field generated by it is also rotationally symmetric, and when the superconductor is on the axis, it is clear that the magnetic field experienced by the superconductor is constant as it rotates, in which case free rotation about the axis is achieved. However, the rotation is not controllable, and after a short time, the suspension will eventually come to rest under the influence of the air resistance. The inability to achieve a wide variety of controlled movements greatly limits the display of this technology, and other magnetic levitation technologies (such as levitation between an electromagnet and iron) also suffer from this drawback. Therefore, in order to compensate for this drawback, it is an urgent requirement to design a controllable magnetic levitation device.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provides a controllable display cabinet based on magnetic suspension technology and applying superconducting magnetic suspension technology.
The technical scheme of the technical problem to be solved by the invention is as follows: a display cabinet applying superconducting magnetic suspension technology comprises a frame, an electric control cabinet, an electromagnet array and a display stand. The electrical control cabinet is arranged at the lower part of the frame. The electromagnet array is formed by closely arranging a plurality of electromagnets and is fully distributed on the upper part of the electric control cabinet; the power-on module consists of a plurality of electromagnets which are close to each other and are powered on; a cavity is formed in the exhibition stand, and a superconductor is fixedly installed in the cavity and is used for being filled with liquid nitrogen; and a controller is arranged in the electrical control cabinet and used for controlling the electrification and the outage of the electromagnet so as to realize the setting of the electrification module.
Preferably, the electromagnets are cylindrical and there are 256 electromagnets.
Preferably, the electrifying module consists of three rows and three columns of electromagnets.
Preferably, when the display is carried out:
and 5, controlling the movement, rotation and translation of the exhibition stand by setting the electrifying module and controlling the conduction condition of the electromagnet of the electrifying module.
Preferably, in the step 5:
the moving direction of the electrifying module is a head edge, and the opposite edge of the head edge is a tail edge;
when the exhibition stand needs to be moved:
firstly, electrifying an uncharged electromagnet adjacent to the first edge electromagnet in the moving direction;
then the power supply of the tail edge electromagnet is cut off;
and sequentially controlling the electromagnets at the head edge and the tail edge to realize continuous movement.
Preferably, in the step 5:
the electromagnet in the center of the electrifying module is a central electromagnet;
setting two electromagnets which are adjacent to the central electromagnet and are symmetrical about the center of the central electromagnet as rotary electromagnets;
other electromagnets of the electrifying module are auxiliary electromagnets;
when the exhibition stand needs to be rotated:
firstly, setting the magnitude of the electrifying current of the rotary electromagnet as a rotating current, wherein the magnitude of the rotating current is different from the holding current of other electromagnets;
then, setting the auxiliary electromagnet at the front part of the current rotating direction of the rotating electromagnet as the rotating electromagnet and modifying the electrified current into the rotating current;
then, the current of the rotating electromagnet is recovered to be holding current;
the current rotary electromagnet and the electromagnet adjacent to the current rotary electromagnet are sequentially controlled to realize the continuous rotation of the exhibition stand.
Preferably, in step 5, when the exhibition stand needs to be lifted:
the lifting of the exhibition stand is realized by increasing the current of the electromagnet of the electrifying module;
the lowering of the exhibition stand is achieved by lowering the current of the electromagnets of the powered modules.
Preferably, nine electromagnets in the center of the electromagnet array in the initial state are set as the energization module.
Preferably, the upper part of the electromagnet is provided with an indicator light, and the indicator light is turned on when the electromagnet is electrified.
Preferably, the upper portion of electro-magnet sets up the inductor for whether the detection stand is located its upper portion.
The beneficial effects of the invention are as follows:
the functions of moving, rotating and lifting the suspended exhibition stand can be realized.
Drawings
FIG. 1 is a schematic perspective view of one embodiment of the present invention.
Fig. 2 is a front view of one embodiment of the present invention.
Fig. 3 is a schematic view of a display stand and superconductor mounting arrangement.
Fig. 4 is a schematic diagram of the states of the electromagnets of the electrified module when the control display platform rotates.
Fig. 5 is a schematic diagram of an implementation method for controlling the translation of the exhibition stand.
Fig. 6 is a schematic diagram of an implementation method for controlling the rotation of the exhibition stand.
In the figure:
2. placing the exhibit; 7c, an auxiliary electromagnet; 7b, a rotary electromagnet; 7a, a central electromagnet; 4. a superconductor; 3. a display stand; 7. a power-on module; an electromagnet array; 5. an electromagnet; 6. an electrical control cabinet; 1. a frame.
Detailed Description
In order to make the technical solution and the advantages of the present invention clearer, the following explains embodiments of the present invention in further detail.
A display cabinet applying superconducting magnetic suspension technology comprises a frame 1, an electric control cabinet 6, an electromagnet array and a display stand 3.
The frame 1 is a cubic frame body formed by aluminum profiles, and the cubic frame body is only provided with an edge structure and a hollow side surface for display. The four side surfaces and the top surface of the upper part can be provided with baffles made of transparent materials such as glass and the like.
The electrical control cabinet 6 is fixed at the lower part of the aluminum profile frame 1 and is arranged inside the frame 1, and the upper part of the electrical control cabinet 6 is flat and has the same shape as the horizontal section of the frame. The electric control cabinet 6 is internally provided with a controller, a power supply module and the like.
The electromagnet array is arranged on the upper plane of the electric control cabinet 6 and fixed with the upper surface of the electric control cabinet 6. The electromagnet array is formed by arranging a plurality of electromagnets 5. The shape of the electromagnet 5 can be rectangular and cylindrical, the electromagnet is cylindrical in order to facilitate heat dissipation, and the gap between the electromagnets 5 can improve the heat dissipation effect.
For ease of arrangement, the electromagnets 5 may be arranged in 256, i.e. 16 rows and 16 columns. In operation, a group of 256 electromagnets 5 is energized to form an energized module 7, and the group of electromagnets 5 is composed of a plurality of electromagnets 5 which are immediately adjacent to and energized, that is, the energized module 7 is an n × n electromagnet matrix, in this embodiment, an electromagnet matrix of three rows and three columns.
In order to realize better control and improve the stability of the exhibition stand 3, the electromagnet 5 at the center of the electrified module 7 is set as a central electromagnet 7 a; two electromagnets 5 adjacent to the center electromagnet 7a and symmetric with respect to the center electromagnet 7a are set as rotary electromagnets 7 b; the other electromagnets 5 of the energization module 7 are auxiliary electromagnets 7 c. Wherein the current of the central electromagnet 7a is the largest, which is set as the positioning current. The current of the other electromagnets 5 is smaller than that of the central electromagnet 7 a. The current of the rotary electromagnet 7b is set to be a rotation current, the current of the auxiliary electromagnet 7c is set to be a holding current, and the positioning current is larger than the rotation current and larger than the holding current.
The area of the plane formed by the electrifying modules 7 is larger than or equal to the area of the lower surface of the superconductor so as to realize the effect of fixed suspension.
The exhibition stand 3 is a cube or a cylinder and is internally provided with a cavity. The superconductor 4 is fixedly arranged in the cavity and is filled with liquid nitrogen; as shown, superconductor 4 is disposed at the bottom of exhibition stand 3. The upper part of the exhibition stand 3 is used for placing the exhibit 2.
In the exhibition, the controller in the electric control cabinet 6 selects and sets different electrified modules 7 to realize the movement and rotation of the exhibition stand 3, and controls the current of the electromagnets 5 of the electrified modules 7 to realize the control of the lifting of the exhibition stand 3. Specifically, when displaying:
And 2, using a cushion block to hold the exhibition stand 3 right above the electrifying module 7. And (3) cushioning the superconductor and the liquid nitrogen container by using a cushion block at a certain height right above the electrifying module 7. The height of the spacer, which in this example is less than 50mm, is selected according to the magnitude of the current flowing through the electromagnet 5 of the energized module 7 in the initial state.
And 3, injecting liquid nitrogen into the exhibition stand 3, and cooling the exhibition stand for 10 minutes to enable the superconductor 4 to enter a superconducting state.
And 4, removing the cushion block to enable the superconductor to be suspended in the air.
And 5, controlling the movement, rotation and translation of the exhibition stand 3 by setting the electrifying module 7 and controlling the conduction condition of the electromagnet 5 of the electrifying module 7.
Firstly, when the exhibition stand 3 needs to be moved:
the moving direction of the electrifying module 7 is a head edge, and the opposite edge of the head edge is a tail edge;
firstly, electrifying the uncharged electromagnet 5 adjacent to the leading edge electromagnet 5 in the moving direction, and then cutting off the power supply of the trailing edge electromagnet 5; a new powered module 7 is now formed. The display stand then follows the current-carrying module 7 by the width of an electromagnet.
The continuous movement of the exhibition stand 3 is realized by the new electrifying module 7 which continuously controls the electromagnets at the head side and the tail side to be set in sequence.
If a rectangular path can be set, the moving direction is leftward, the left head edge and the right edge are left and right tail edges, the head edge is continuously moved leftward to reach a corner, the front edge is set as the head edge, and then the front edge is continuously moved forward to realize continuous forward movement.
If the movement is left-forward, the front and left sides are set as the leading sides. At this time, there are 5 electromagnets adjacent to the leading edge and in the left-front direction, and at this time, after the power supply of the electromagnet 5 at the trailing edge is cut off, a new energization module 7 of three rows and three columns is also formed. Movement can also be achieved.
Or, one side of the moving direction of the energizing module 7 is a leading side, the opposite side of the leading side is a trailing side, and a middle side is arranged between the leading side and the trailing side.
When moving:
first, the uncharged electromagnet 5 adjacent to the leading electromagnet 5 in the moving direction is energized, and the same current is applied to the uncharged electromagnet 5 adjacent to the leading electromagnet 5 in the moving direction.
Then, the current of the leading electromagnet 5 is set to the current of the middle electromagnet 5.
And then the current of the electromagnet 5 at the trailing edge is cut off.
And finally, setting the current of the middle edge electromagnet 5 as the current of the tail edge electromagnet.
After the above control, the energizing module moves by the width of one electromagnet 5 in the moving direction.
Continuous movement can be achieved by continuous control.
In the above-described control, in order to stably reduce the speed of the movement in order to achieve the movement, a time interval may be set between turning off the power supply and turning on the power supply.
If the non-charged electromagnet 5 adjacent to the leading edge is charged, the leading edge current is adjusted to the middle edge current after the leading edge interval is set. The other electromagnets are controlled at the same time interval.
Secondly, when the exhibition stand 3 needs to be rotated:
the electromagnet 5 at the center of the electrifying module 7 is used as a central electromagnet 7 a; two electromagnets 5 adjacent to the center electromagnet 7a and symmetrical with respect to the center electromagnet 7a are set as rotary electromagnets 7 b; the other electromagnets 5 of the energization module 7 are auxiliary electromagnets 7 c.
First, the magnitude of the current flowing through the rotary electromagnet 7b is set to be a turning current different from the holding current of the other electromagnets.
Then, the auxiliary electromagnet 7c at the front in the direction of rotation of the rotary electromagnet 7b at present is set as the rotary electromagnet 7b and the energization current is modified to the rotation current.
Then, the current of the rotating electromagnet 7b is returned to the holding current.
Wherein the rotation current and the holding current are different in magnitude. The holding current is the current flowing through the electromagnet 5 in the initial state of the energization module 7.
And sequentially controlling the current rotary electromagnet 7b and the electromagnet adjacent to the current rotary electromagnet 7b to realize the continuous rotation of the exhibition stand 3.
Thirdly, when the exhibition stand needs to be lifted in the step 5:
the lifting of the exhibition stand 3 is realized by increasing the current of the electromagnet 5 of the electrifying module 7;
lowering of the booth 3 is achieved by lowering the current of the electromagnet 5 of the energizing module 7.
Furthermore, in order to facilitate observation and control, an indicator light is arranged on the upper part of the electromagnet 5, and the indicator light is turned on when the electromagnet 5 is electrified.
In order to realize feedback control, the upper part of the electromagnet 5 is provided with a sensor for detecting whether the exhibition stand 3 is positioned on the upper part thereof. The inductor may be a vortex proximity switch, a photodiode, or the like.
In the moving process, when the moving or rotating is controlled, if the electromagnet at the new position does not detect that the exhibition stand 3 arrives, an alarm signal is sent out, and the moving is stopped so as to avoid damaging the exhibit.
In summary, the present invention is only a preferred embodiment, and is not intended to limit the scope of the present invention, and it is possible for a worker skilled in the art to make various changes and modifications within the scope of the present invention without departing from the technical spirit of the present invention. The technical scope of the present invention is not limited to the content of the specification, and all equivalent changes and modifications in the shape, structure, characteristics and spirit described in the scope of the claims of the present invention are included in the scope of the claims of the present invention.
Claims (10)
1. A display cabinet applying superconducting magnetic suspension technology is characterized in that:
the method comprises the following steps:
a frame (1) is arranged on the upper surface of the frame,
an electric control cabinet (6) arranged at the lower part of the frame (1);
the electromagnet array is formed by tightly arranging a plurality of electromagnets (5) and fully distributing the electromagnets on the upper part of the electric control cabinet (6);
the electrifying module (7) consists of a plurality of electromagnets (5) which are close to and electrified;
the exhibition platform (3) is internally provided with a cavity, and the cavity is internally and fixedly provided with a superconductor (4) and is used for being filled with liquid nitrogen;
the electric control cabinet (6) is internally provided with a controller for controlling the electrification and the outage of the electromagnet (5) so as to realize the setting of the electrification module (7).
2. The display cabinet using superconducting magnetic levitation technology as claimed in claim 1, wherein:
the electromagnets (5) are cylindrical and are provided with 256 electromagnets.
3. The display cabinet using superconducting magnetic levitation technology as claimed in claim 1, wherein:
the electrifying module (7) consists of three rows and three columns of electromagnets.
4. The display cabinet using superconducting magnetic levitation technology as claimed in claim 1, wherein:
when the exhibition is carried out:
step 1, an electric control cabinet (6) supplies power to an electromagnet (5) of a set power-on module (7) to generate a magnetic field;
step 2, a cushion block is used for cushioning the exhibition stand (3) right above the power-on module (7);
step 3, injecting liquid nitrogen into the exhibition stand (3), and cooling the superconductor (4) for 10 minutes to enable the superconductor to enter a superconducting state;
step 4, removing the cushion block to enable the superconductor to be suspended in the air;
and 5, controlling the movement, rotation and translation of the exhibition stand (3) by setting the electrifying module (7) and controlling the conduction condition of the electromagnet (5) of the electrifying module (7).
5. The display cabinet using superconducting magnetic levitation technology as claimed in claim 4, wherein:
in the step 5:
the moving direction of the electrifying module (7) is a head edge, and the opposite edge of the head edge is a tail edge;
when the exhibition stand (3) needs to be moved:
firstly, electrifying the non-electrified electromagnet (5) adjacent to the first electromagnet (5) in the moving direction;
then the power supply of the tail edge electromagnet (5) is cut off;
and sequentially controlling the electromagnets at the head edge and the tail edge to realize continuous movement.
6. The display cabinet using superconducting magnetic levitation technology as claimed in claim 4, wherein:
in the step 5:
the electromagnet (5) at the center of the electrifying module (7) is a central electromagnet (7 a);
two electromagnets (5) which are adjacent to the central electromagnet (7a) and are centrosymmetric with respect to the central electromagnet (7a) are set as rotary electromagnets (7 b);
other electromagnets (5) of the electrifying module (7) are auxiliary electromagnets (7 c);
when the exhibition stand (3) needs to be rotated:
firstly, the magnitude of the electrifying current of the rotary electromagnet (7b) is set as a rotating current, and the magnitude of the rotating current is different from the holding current of other electromagnets;
then, an auxiliary electromagnet (7c) at the front part in the rotation direction of the current rotary electromagnet (7b) is set as the rotary electromagnet (7b) and the electrified current is modified into the rotation current;
then, the current of the rotating electromagnet (7b) is recovered to be the holding current;
the current rotary electromagnet (7b) and the electromagnet adjacent to the current rotary electromagnet are sequentially controlled to realize the continuous rotation of the exhibition stand (3).
7. The display cabinet using superconducting magnetic levitation technology as claimed in claim 4, wherein:
and in the step 5, when the exhibition stand needs to be lifted:
the lifting of the exhibition stand (3) is realized by increasing the current of the electromagnet (5) of the electrifying module (7);
the lowering of the exhibition stands (3) is achieved by lowering the current of the electromagnets (5) of the energizing module (7).
8. The display cabinet using superconducting magnetic levitation technology as claimed in claim 1, wherein:
nine electromagnets (5) at the center of the electromagnet array are set as an electrifying module (7) in the initial state.
9. The display cabinet using superconducting magnetic levitation technology as claimed in claim 1, wherein:
and an indicator light is arranged on the upper part of the electromagnet (5), and the indicator light is turned on when the electromagnet (5) is electrified.
10. The display cabinet using superconducting magnetic levitation technology as claimed in claim 1, wherein:
the upper portion of electro-magnet (5) sets up the inductor for whether detect stand (3) are located its upper portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210541685.5A CN114916797B (en) | 2022-05-17 | 2022-05-17 | Display cabinet applying superconducting magnetic levitation technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210541685.5A CN114916797B (en) | 2022-05-17 | 2022-05-17 | Display cabinet applying superconducting magnetic levitation technology |
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| CN114916797A true CN114916797A (en) | 2022-08-19 |
| CN114916797B CN114916797B (en) | 2023-09-15 |
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| CN111824281A (en) * | 2020-07-20 | 2020-10-27 | 中国科学院沈阳自动化研究所 | Wall all-round moving mechanism |
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| JPH0917847A (en) * | 1995-06-30 | 1997-01-17 | Nikon Corp | Magnetic levitation type stage |
| JP2002147523A (en) * | 2000-11-09 | 2002-05-22 | Railway Technical Res Inst | Iron sand magnetism active vibration control device |
| CN1476024A (en) * | 2002-07-05 | 2004-02-18 | 新日本制铁株式会社 | Superconductive device, superconductive magnetic suspension apparatus and superconductive magnetic beraing |
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| CN111824281A (en) * | 2020-07-20 | 2020-10-27 | 中国科学院沈阳自动化研究所 | Wall all-round moving mechanism |
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| Publication number | Publication date |
|---|---|
| CN114916797B (en) | 2023-09-15 |
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