CN117498721A - Superconducting magnetic suspension motor and superconducting magnetic suspension stirrer - Google Patents
Superconducting magnetic suspension motor and superconducting magnetic suspension stirrer Download PDFInfo
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- CN117498721A CN117498721A CN202311441339.0A CN202311441339A CN117498721A CN 117498721 A CN117498721 A CN 117498721A CN 202311441339 A CN202311441339 A CN 202311441339A CN 117498721 A CN117498721 A CN 117498721A
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- 239000000725 suspension Substances 0.000 title claims abstract description 45
- 238000005339 levitation Methods 0.000 claims abstract description 98
- 238000004804 winding Methods 0.000 claims abstract description 47
- 238000009434 installation Methods 0.000 claims abstract description 3
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 14
- 230000004308 accommodation Effects 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 10
- 238000005096 rolling process Methods 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims 1
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 18
- 239000003153 chemical reaction reagent Substances 0.000 abstract description 16
- 230000001954 sterilising effect Effects 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 10
- 238000003756 stirring Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 239000003814 drug Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000002887 superconductor Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004113 cell culture Methods 0.000 description 2
- 238000000855 fermentation Methods 0.000 description 2
- 230000004151 fermentation Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000528 Na alloy Inorganic materials 0.000 description 1
- 229910001275 Niobium-titanium Inorganic materials 0.000 description 1
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 1
- BTGZYWWSOPEHMM-UHFFFAOYSA-N [O].[Cu].[Y].[Ba] Chemical compound [O].[Cu].[Y].[Ba] BTGZYWWSOPEHMM-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- PEQFPKIXNHTCSJ-UHFFFAOYSA-N alumane;niobium Chemical compound [AlH3].[Nb] PEQFPKIXNHTCSJ-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- RJSRQTFBFAJJIL-UHFFFAOYSA-N niobium titanium Chemical compound [Ti].[Nb] RJSRQTFBFAJJIL-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- -1 silver-cobalt-sodium Chemical compound 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 229910021521 yttrium barium copper oxide Inorganic materials 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N15/00—Holding or levitation devices using magnetic attraction or repulsion, not otherwise provided for
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K55/00—Dynamo-electric machines having windings operating at cryogenic temperatures
- H02K55/02—Dynamo-electric machines having windings operating at cryogenic temperatures of the synchronous type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Superconductive Dynamoelectric Machines (AREA)
Abstract
The invention discloses a superconducting magnetic levitation motor and a superconducting magnetic levitation stirrer, and relates to the technical field of superconducting magnetic levitation motors. This superconductive magnetic suspension motor includes installation casing, stator structure, rotor structure and superconductive suspension structure, stator structure installs in first holding intracavity, stator structure includes a plurality of stator windings, stator winding distributes along the circumference direction in first holding chamber, superconductive suspension structure includes superconductive subassembly and permanent magnet, superconductive subassembly is located the second and holds the intracavity, rotor structure and permanent magnet all are located stator winding top, stator winding includes stator core and stator coil, stator coil is around locating outside the stator core, and stator coil highly is greater than the diameter that a plurality of stator windings enclosed the structure in first holding chamber radial direction in first holding chamber axial direction. The superconducting magnetic suspension motor can reduce reagents remained on the surface of the superconducting magnetic suspension stirrer so as to reduce the subsequent disinfection and sterilization difficulty and also can improve the application range of the superconducting magnetic suspension stirrer.
Description
Technical Field
The invention relates to the technical field of superconducting magnetic levitation motors, in particular to a superconducting magnetic levitation motor and a superconducting magnetic levitation stirrer.
Background
Under the condition that the requirements on the reaction environment are severe, such as medicine, biology, chemistry and the like, the traditional stirrer is adopted for stirring, and at least the following problems exist: (1) The mechanical bearing needs physical contact, abrasive particles generated by friction enter the product, and the purity of the product is affected; (2) Friction generates heat, and has great influence on products prepared under low-temperature conditions; (3) To reduce friction, a lubricant is added, and the lubricant enters the product, which affects the purity of the product. For this reason, in the case where the requirements of medicine, biology, chemistry, etc. are severe to the reaction environment, a magnetic levitation stirrer is generally used for stirring in the related art to eliminate the above-mentioned problems of the conventional stirrer.
However, the inventor found in the research process that the magnetic suspension stirrer in the related art has the problem that more reagents remain on the stirrer during the working, which not only affects the yield of products, but also has the problem that the residual reagents (such as biological reagents) on the magnetic suspension stirrer are difficult to thoroughly clean during the subsequent disinfection and sterilization treatment. Therefore, the magnetic suspension stirrer capable of facilitating disinfection and sterilization is a technical problem to be solved urgently by the person skilled in the art.
Disclosure of Invention
The invention discloses a superconducting magnetic suspension motor and a superconducting magnetic suspension stirrer, which are used for solving the technical problems that more reagent residues exist in magnetic suspension stirring in the related art and disinfection and sterilization are difficult to thoroughly perform.
In order to solve the problems, the invention adopts the following technical scheme:
a first aspect of the invention provides a superconducting magnetic levitation motor.
The invention discloses a superconductive magnetic suspension motor, which comprises a mounting shell, a stator structure, a rotor structure and a superconductive suspension structure, wherein the mounting shell comprises a first shell and a second shell, the first shell is of a hollow structure and forms a first accommodating cavity, the first shell and the second shell are enclosed to form a second accommodating cavity, the stator structure is mounted in the first accommodating cavity and comprises a plurality of stator windings, the stator windings are distributed along the circumferential direction of the first accommodating cavity, the superconductive suspension structure comprises a superconductive assembly and a permanent magnet, the superconductive assembly is positioned in the second accommodating cavity, the rotor structure and the permanent magnet are positioned above the stator windings, the stator windings comprise a stator core and a stator coil, the stator coil is wound outside the stator core, and the height of the stator coil in the axial direction of the first accommodating cavity is larger than the diameter of the enclosed structure of the plurality of stator windings in the radial direction of the first accommodating cavity.
Further, the height of the stator coil in the axial direction of the first accommodating cavity satisfies: h: d=1.5 to 3:1, wherein H is the height of the stator coil in the axial direction of the first accommodating cavity, and D is the diameter of the structure enclosed by the plurality of stator windings in the radial direction of the first accommodating cavity.
Further, the sections of the stator core and the stator coil are triangular.
Further, the stator core is manufactured by rolling and pressing silicon steel sheets, the thickness of the silicon steel sheets is smaller than or equal to 0.1mm, and adjacent silicon steel sheets are connected in a vacuum bonding mode.
Further, the superconducting assembly comprises a superconducting block, a cold guide seat, a third accommodating cavity and a conveying pipe, wherein a plurality of caulking grooves are formed in the circumferential direction of the end face of the cold guide seat, the superconducting block is installed in the caulking grooves, the side face of the cold guide seat is provided with the third accommodating cavity, and the conveying pipe is used for conveying refrigerating materials into the third accommodating cavity.
Further, when the superconducting block is installed in the caulking groove, a first gap is formed between the end face of the superconducting block and the top wall of the second accommodating cavity.
Further, the height of the first gap in the axial direction of the second accommodating cavity is 2-5 mm.
Further, the second housing comprises an upper housing and a lower housing, wherein a part of the cold guide seat is located in an accommodating space formed by enclosing the upper housing and the first housing, the other part of the cold guide seat, the third accommodating cavity and the conveying pipe are located in an accommodating space formed by enclosing the lower housing and the first housing, the outer diameter of the upper housing is smaller than that of the lower housing, and a step wall is formed between the upper housing and the lower housing.
Further, the superconducting magnetic levitation motor further comprises a mounting base, a first mounting groove and a second mounting groove are formed in the mounting base, the first mounting groove and the second mounting groove are coaxially arranged, the first mounting groove is used for mounting the rotor structure, and the second mounting groove is used for mounting the permanent magnet.
In a second aspect of the invention, a superconducting magnetic levitation stirrer is provided.
The superconducting magnetic suspension stirrer comprises a superconducting magnetic suspension motor and paddles, wherein the superconducting magnetic suspension motor is the superconducting magnetic suspension motor according to any one of the technical schemes, and the paddles are connected with a mounting base of the superconducting magnetic suspension motor.
The technical scheme adopted by the invention can achieve the following beneficial effects:
in a first aspect, the superconducting magnetic levitation motor comprises a stator structure, a rotor structure and a superconducting levitation structure, wherein the stator structure comprises a plurality of stator windings, the superconducting levitation structure comprises a superconducting assembly and permanent magnets, the stator windings are distributed along the circumferential direction of a first accommodating cavity, the rotor structure and the permanent magnets are positioned above the stator windings, and the rotor structure can be levitated through the actions of the superconducting assembly and the permanent magnets; the stator winding comprises a stator core and a stator coil, the stator coil is wound outside the stator core, the stator coil and the stator core are matched to generate a rotating magnetic field rotating around the circumferential direction of the first accommodating cavity under the condition of supplying alternating current, and the rotating magnetic field can be used for driving the rotor structure to rotate.
In the second aspect, the height of the stator coil in the axial direction of the first accommodating cavity is larger than the diameter of a structure surrounded by the plurality of stator windings in the radial direction of the first accommodating cavity, namely, the size of a radial space of the stator coil can be reduced by increasing the number of turns of the stator coil under the condition that the magnetic field generated by the stator coil is ensured, so that the size of the whole superconducting magnetic levitation motor in the radial direction is reduced, when the superconducting magnetic levitation stirrer stretches into a reactor, the cross-sectional area of the stretching part of the superconducting magnetic levitation stirrer can be reduced, and further, the effect of reducing reagents (such as biological reagents) adsorbed and remained on the surface of the superconducting magnetic levitation stirrer can be achieved, so that the subsequent disinfection and sterilization difficulty is reduced; in addition, the dimension of the whole superconducting magnetic suspension motor in the radial direction is smaller, so that the superconducting magnetic suspension stirrer can be applicable to reactors with different volumes, and the application range of the superconducting magnetic suspension stirrer is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a first schematic view of a superconducting magnetic levitation stirrer according to an embodiment of the present application installed in a reactor;
FIG. 2 is a second schematic view of a superconducting magnetic levitation stirrer according to an embodiment of the present application installed in a reactor;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a first schematic view of a superconducting magnetic levitation stirrer according to an embodiment of the present application;
FIG. 5 is a second schematic view of a superconducting magnetic levitation stirrer according to an embodiment of the present application;
FIG. 6 is a B-B cross-sectional view of FIG. 5;
FIG. 7 is a cross-sectional view of C-C of FIG. 5;
FIG. 8 is a partial schematic view of a superconducting magnetic levitation stirrer according to an embodiment of the present application;
FIG. 9 is a first schematic view of a mounting base of an embodiment of the present application;
FIG. 10 is a second schematic view of a mounting base of an embodiment of the present application;
fig. 11 is a D-D sectional view of fig. 10.
In the figure: 10. a superconducting magnetic levitation motor; 20. a reactor; 110. a first housing; 111. a first accommodation chamber; 120. a second housing; 121. an upper housing; 122. a lower housing; 123. a step wall; 130. a second accommodation chamber; 210. a stator winding; 211. a stator core; 212. a stator coil; 300. a rotor structure; 411. a superconducting block; 411a, a first gap; 412. a cold guide seat; 413. a third accommodation chamber; 414. a delivery tube; 415. a partition plate; 420. a permanent magnet; 500. a mounting base; 510. a first mounting groove; 520. a second mounting groove; 530. a second gap; 600. a blade.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, based on the examples herein, which are within the scope of the invention as defined by the claims, will be within the scope of the invention as defined by the claims.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type and not limited to the number of objects, e.g., the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
The inventor finds that in the fields of biological medicine and the like, when the superconducting magnetic suspension stirrer is used for stirring, when the superconducting magnetic suspension stirrer can adsorb part of biological reagents, after the reaction is finished, the biological reagents adsorbed on the superconducting magnetic suspension stirrer need to be disinfected and sterilized, if the superconducting magnetic suspension stirrer extending into the reactor is large in size, more biological reagents remain on the superconducting magnetic suspension stirrer, the disinfection and sterilization difficulty is increased, and the residual biological reagents on the superconducting magnetic suspension stirrer are difficult to thoroughly clean. Therefore, the application provides a superconducting magnetic levitation motor and a superconducting magnetic levitation stirrer, and the cross-sectional area of the superconducting magnetic levitation stirrer extending into a reactor can be reduced by reducing the radial dimension of the superconducting magnetic levitation stirrer, so that biological reagents absorbed by the superconducting magnetic levitation stirrer can be reduced, and the disinfection and sterilization difficulty can be reduced.
The superconducting magnetic levitation motor and the superconducting magnetic levitation stirrer provided in the embodiments of the present application are described in detail below with reference to fig. 1 to 11 through specific embodiments and application scenarios thereof.
A first aspect of the present embodiment provides a magnetic levitation motor.
The superconducting levitation motor of the present embodiment includes a mounting housing, a stator structure, a rotor structure 300, and a superconducting levitation structure. The installation housing includes a first housing 110 and a second housing 120, the first housing 110 is of a hollow structure and forms a first receiving chamber 111, and the first housing 110 and the second housing 120 enclose a second receiving chamber 130, as shown in fig. 6. Preferably, the first housing 110 is a hollow cylindrical structure having a first receiving chamber 111 formed therein. The second accommodating cavity 130 is a sealed cavity structure formed by enclosing the first housing 110 and the second housing 120. The stator structure is installed in the first accommodating cavity 111, the stator structure includes a plurality of stator windings 210, the stator windings 210 are distributed along the circumferential direction of the first accommodating cavity 111, the superconductive suspension structure includes a superconductive assembly and a permanent magnet 420, the superconductive assembly is located in the second accommodating cavity 130, the rotor structure 300 and the permanent magnet 420 are both located above the stator windings 210, the stator windings 210 include a stator core 211 and a stator coil 212, and the stator coil 212 is wound outside the stator core 211, as shown in fig. 4 to 8.
The rotor structure 300 may be levitated by the action of the superconducting assembly and the permanent magnets 420; the stator winding 210 includes a stator core 211 and a stator coil 212, the stator coil 212 is wound outside the stator core 211, the stator coil 212 and the stator core 211 cooperate to generate a rotating magnetic field rotating around the circumferential direction of the first accommodating cavity 111 when alternating current is supplied to the stator coil 212, and the rotating magnetic field can be used to drive the rotor structure 300 to rotate, so that when the superconducting magnetic levitation motor of the embodiment is used in a stirrer, the support of the superconducting levitation structure can be used to levitate the paddles, and meanwhile, the rotation of the rotor structure 300 is used to drive the paddles connected with the stator coil to rotate, so that the function of stirring without a rotating shaft is realized.
As shown in fig. 6, the stator core 211 is fixed to the top wall of the first accommodation chamber 111. The stator coil 212 may be maintained at the same height as the stator core 211 or may be slightly lower than the top surface of the stator core 211.
As shown in fig. 6, when the rotor structure 300 and the permanent magnets 420 are positioned above the stator windings 210, the rotor structure 300 and the permanent magnets 420 are both disposed coaxially with the stator windings 210. Specifically, the rotor structure 300 is located above the composite structure surrounded by the plurality of stator windings 210. The number of the stator windings 210 may be 3 to 10 groups, and the rotor structure 300 includes a plurality of permanent magnets, the polarities of which are alternately arranged, and the plurality of permanent magnets are enclosed to form the same structure as the stator windings 210, as shown in fig. 7 and 8. The number of permanent magnets may be the same as the number of stator windings 210 or may be different from the number of stator windings 210.
Further, the height of the stator coil 212 in the axial direction of the first accommodating chamber 111 is larger than the diameter of the structure enclosed by the plurality of stator windings 210 in the radial direction of the first accommodating chamber 111, as shown in fig. 6 and 7. As shown in fig. 6, the diameter of the structure surrounded by the plurality of stator windings 210 in the radial direction of the first accommodation chamber 111 refers to the diameter of a circle surrounded by six stator windings 210, and the diameter may be the diameter at the outer edge (near the first housing 110 side) of the structure.
The height of the stator coil 212 in the axial direction of the first accommodating cavity 111 is larger than the diameter of a structure enclosed by the plurality of stator windings 210 in the radial direction of the first accommodating cavity 111, that is, the number of turns of the stator coil 212 is increased to reduce the radial space of the stator coil 212 under the condition of ensuring the magnetic field generated by the stator coil 212, so that the size of the superconducting magnetic levitation motor in the radial direction is reduced, when the superconducting magnetic levitation stirrer stretches into the reactor 20, the cross-sectional area of the stretching part of the superconducting magnetic levitation stirrer can be reduced, and then reagents (such as biological reagents) adsorbed and remained on the surface of the superconducting magnetic levitation stirrer can be reduced, so that the subsequent disinfection and sterilization difficulty is reduced; in addition, the dimension of the whole superconducting magnetic suspension motor in the radial direction is smaller, so that the superconducting magnetic suspension stirrer can be suitable for reactors 20 with different volumes, and the application range of the superconducting magnetic suspension stirrer is improved. For example, for the same superconducting magnetic stirrer, it is possible to adapt a reactor 20 having a volume of 500L, 1000L or 2000L, due to its small dimensions in the direction of progress. Fig. 1-3 show schematic views of a superconducting magnetic levitation stirrer installed in a reactor 20.
In the fields of biological medicine and the like, such as cell culture, fermentation and the like, the transmission of oxygen is blocked by the existence of bubbles, and mechanical damage is possibly caused to cells by the bubbles, so that in the cell culture and fermentation process, the control of the formation of bubbles is particularly critical, the superconducting magnetic suspension stirrer which is prepared by utilizing the magnetic suspension motor of the embodiment has smaller cross-sectional area and stretches into the superconducting magnetic suspension stirrer in the reactor 20, so that gaps between the stirrer and liquid can be reduced, and the generation and suspension of bubbles can be reduced.
According to a preferred embodiment, the height of the stator coil 212 in the axial direction of the first receiving cavity 111 satisfies: h: d=1.5 to 3:1, where H is the height of the stator coil 212 in the axial direction of the first accommodating chamber 111, and D is the diameter of the structure enclosed by the plurality of stator windings 210 in the radial direction of the first accommodating chamber 111. Preferably, the height of the stator coil 212 in the axial direction of the first accommodation chamber 111 satisfies: h: D=1.5 to 2:1. More preferably, the height of the stator coil 212 in the axial direction of the first accommodation chamber 111 satisfies: h: D=1.5:1. More preferably, the height of the stator coil 212 in the axial direction of the first accommodation chamber 111 satisfies: h: D=2:1. In the superconducting magnetic levitation motor according to the preferred embodiment, the height of the stator coil 212 in the axial direction of the first accommodating chamber 111 satisfies: when H: d=1.5 to 3:1, the magnetic force of the stator structure and the cross-sectional area of the superconducting magnetic levitation stirrer extending into the reactor 20 are ensured to be small, and the efficiency of the superconducting magnetic levitation motor is ensured not to be affected.
Specifically, in the superconducting magnetic levitation motor according to the preferred embodiment, when the diameter of the structure enclosed by the plurality of stator windings 210 in the radial direction of the first accommodating cavity 111 is reduced, the magnetic force generated by the stator windings 210 is also reduced, and by increasing the length of the stator windings 210 in the axial direction, the number of turns of the coil can be increased, so as to increase the magnetic force, to compensate for the magnetic force loss caused by the reduction of the size of the plurality of stator windings 210 in the radial direction, but as the length of the stator windings 210 in the axial direction is continuously increased, the magnetic leakage phenomenon of the stator core 211 is also more obvious, resulting in the reduction of the efficiency of the superconducting magnetic levitation motor. Therefore, considering the influence of factors such as magnetic field saturation of the stator core 211, as the length of the stator coil 212 in the axial direction increases, the contribution to the magnetic force is smaller and smaller, and the height of the stator coil 212 in the axial direction of the first accommodating cavity 111 preferably satisfies: H:D=1.5 to 3:1, particularly preferably H:D=1.5 to 2:1.
According to a preferred embodiment, the stator core 211 and the stator coil 212 are triangular in cross section, as shown in fig. 7. Compared with the stator core 211 and the stator coil 212 with circular or square cross-sectional areas, the superconductive magnetic levitation motor of the preferred technical scheme of the embodiment has triangular cross sections of the stator core 211 and the stator coil 212, so that the space can be better utilized, the structure of the superconductive magnetic levitation motor is more compact, the radial dimension of the superconductive magnetic levitation motor is further reduced, gaps are formed between the coils of the triangular structure, ventilation and heat dissipation are further facilitated, and the operation efficiency and reliability of the superconductive magnetic levitation motor are ensured; in the second aspect, the sections of the stator core 211 and the stator coil 212 are triangular, and the triangular structure has better stability, can provide better mechanical rigidity and vibration resistance, and is beneficial to the normal operation of the superconducting magnetic levitation motor and the reduction of vibration noise; in the third aspect, the stator core 211 and the stator coil 212 are triangular in cross section, and since the stator coil 212 is relatively short in length in the radial direction, current can flow more quickly in the coil, and also helps to reduce resistance and power loss.
According to a preferred embodiment, the stator core 211 is manufactured by roll-forming a silicon steel sheet. The superconducting magnetic levitation motor according to the preferred technical solution of the present embodiment, the stator core 211 is manufactured by rolling and forming a silicon steel sheet, and the gap between the stator cores 211 can be reduced during the rolling and forming process, so that the conduction efficiency of magnetic flux can be improved; because the contact between the silicon steel sheets is tighter in the rolling process, the friction and resonance phenomena during mechanical movement can be reduced, and the noise and vibration can be reduced.
Preferably, the thickness of the silicon steel sheets is less than or equal to 0.1mm, and adjacent silicon steel sheets are connected in a vacuum bonding mode. According to the superconducting magnetic levitation motor of the preferred technical scheme of the embodiment, the silicon steel sheets with the thickness smaller than or equal to 0.1mm are selected, and the adjacent silicon steel sheets are connected in a vacuum bonding mode, so that the contact compactness between the adjacent silicon steel sheets can be further enhanced, the magnetic resistance of the stator core 211 is further reduced, and the motor efficiency is improved.
According to a preferred embodiment, the superconducting assembly includes a superconducting block 411, a cold guide 412, a third receiving chamber 413, and a transport pipe 414, as shown in fig. 6. A plurality of caulking grooves are formed in the circumferential direction of the end surface of the cold guide seat 412, the superconducting block 411 is installed in the caulking grooves, a third accommodating cavity 413 is formed on the side surface of the cold guide seat 412, and the conveying pipe 414 is used for conveying the refrigerating material into the third accommodating cavity 413. The third housing chamber 413 is formed by enclosing a part of the cold guide 412 with the partition 415, as shown in fig. 6. Preferably, after the superconducting block 411 is installed in the caulking groove, the end surface of the superconducting block 411 is substantially flush with the end surface of the caulking groove, so that a sufficient contact area between the superconducting block 411 and the cold guide 412 can be ensured. The refrigerating material conveyed by the conveying pipe 414 enters the third accommodating cavity 413, the cold energy of the refrigerating material is transferred to the superconducting block 411 through the cold guide seat 412, and the superconducting block 411 can display superconducting performance at low temperature, so that the rotor structure 300 can be suspended through the actions of the superconducting block 411 and the permanent magnet 420.
Preferably, the cold guide 412 is welded to the partition 415 as an integral structure, and a heat insulating material is provided on the outer wall thereof, so that the loss of cold energy of the refrigerating material can be reduced by the heat insulating material, thereby ensuring that the superconducting block 411 can reach a temperature at which superconducting performance is exhibited.
Preferably, the structure surrounded by the plurality of superconducting blocks 411 remains coaxial with the structure surrounded by the plurality of stator windings 210, as shown in fig. 6. The structure surrounded by the plurality of superconducting blocks 411 and the structure surrounded by the plurality of stator windings 210 are kept coaxial, and the permanent magnets 420 and the rotor structure 300 are kept coaxially arranged, so that the running stability of the rotor structure 300 can be enhanced, and a more accurate and reliable suspension effect can be provided.
Preferably, the superconducting block 411 may be one or more of yttrium barium copper oxide superconductor, neodymium iron boron superconductor, and iron-based superconductor, which may exhibit superconducting properties using liquid nitrogen (-196 ℃) as a refrigerating material. Preferably, the superconducting block 411 may be one or more of niobium-titanium alloy, niobium-aluminum alloy and silver-cobalt-sodium alloy, and the materials need liquid helium (-269 ℃) as a refrigerating material to enable the material to display superconducting performance. It can be known that, based on the difference of the temperatures required for the superconducting block 411 to display the superconducting characteristics, the superconducting magnetic levitation stirrer according to the preferred technical solution of the present embodiment may be a high-temperature superconducting magnetic levitation stirrer or a low-temperature superconducting magnetic levitation stirrer. The superconducting magnetic levitation stirrer is preferably a high-temperature superconducting magnetic levitation stirrer, the temperature required for the superconducting block 411 to display superconducting characteristics is relatively high, implementation and operation are easier, and the high-temperature superconducting has guiding stability, so that the rotor structure 300 can be stably levitated.
According to a preferred embodiment, when the superconducting block 411 is mounted in the caulking groove, a first gap 411a is provided between the end face of the superconducting block 411 and the top wall of the second accommodation chamber 130, as shown in fig. 6. Preferably, the height of the first gap 411a in the axial direction of the second accommodation chamber 130 is 2 to 5mm. More preferably, the height of the first gap 411a in the axial direction of the second accommodation chamber 130 is 3 to 4mm. In order to ensure the heat insulation performance of the superconducting levitation stirrer according to the preferred embodiment, the heat insulation material needs to be wrapped, and the first gap 411a between the end surface of the superconducting block 411 and the top wall of the second accommodating cavity 130 is 2-5 mm, so that not only can enough space be provided for the heat insulation material to ensure the heat insulation performance of the superconducting levitation structure, but also the magnitude of the magnetic force can be ensured, so that the superconducting block 411 can generate enough magnetic force to support the rotor structure 300 for levitation.
According to a preferred embodiment, the second housing 120 includes an upper housing 121 and a lower housing 122, as shown in fig. 6. A part of the cold guide 412 is located in the accommodating space formed by the upper case 121 and the first case 110, and another part of the cold guide 412, the third accommodating chamber 413 and the conveying pipe 414 are located in the accommodating space formed by the lower case 122 and the first case 110, as shown in fig. 6. The outer diameter of the upper case 121 is smaller than the outer diameter of the lower case 122, and a stepped wall 123 is formed between the upper case 121 and the lower case 122, as shown in fig. 6. Preferably, when the superconducting magnetic levitation stirrer is installed in the reactor 20, part or all of the upper case 121 extends into the reactor 20, as shown in fig. 1 to 6 and 8. By means of the arrangement, the superconducting magnetic levitation stirrer of the preferred technical scheme of the embodiment can reduce the cross-sectional area of the superconducting magnetic stirrer extending into the inner part of the reactor 20 as much as possible under the condition that the magnetic force and the operation stability of the superconducting magnetic levitation stirrer are ensured.
According to a preferred embodiment, the superconducting magnetic levitation motor further comprises a mounting base 500, by means of which mounting base 500 a mounting base can be provided for the rotor structure 300 and the permanent magnets 420, as shown in fig. 4-6, 9-11. The mounting base 500 has a first mounting groove 510 and a second mounting groove 520 formed therein, the first mounting groove 510 and the second mounting groove 520 being coaxially disposed, and the first mounting groove 510 being for mounting the rotor structure 300 and the second mounting groove 520 being for mounting the permanent magnet 420, as shown in fig. 6 and 11. Specifically, the mounting base 500 is located in the axial direction of the mounting housing, and a second gap 530 is provided between the mounting base 500 and the mounting housing, as shown in fig. 4 to 6.
A second aspect of the present embodiments provides a superconducting magnetic levitation stirrer.
The superconducting magnetic levitation stirrer of the embodiment comprises a superconducting magnetic levitation motor 10 and a paddle 600, wherein the superconducting magnetic levitation motor 10 is the superconducting magnetic levitation motor according to any one of the technical schemes of the embodiment, and the paddle 600 is connected with a mounting base 500 of the superconducting magnetic levitation motor 10, as shown in fig. 4-6. The blade 600 is connected with the mounting base 500, and the rotor structure 300 is installed in the mounting base 500, so that the blade 600 can be driven to rotate by the rotation of the rotor structure 300.
The superconducting magnetic levitation stirrer of the embodiment, due to the superconducting magnetic levitation motor of any of the embodiments, can suspend the rotor structure 300 through the effect of the superconducting assembly and the permanent magnet 420, and meanwhile, when the stator coil 212 of the superconducting magnetic levitation motor is powered with alternating current, the stator coil 212 and the stator core 211 cooperate to generate a rotating magnetic field rotating around the circumferential direction of the first accommodating cavity 111, and the rotating magnetic field can be used for driving the rotor structure to rotate, so that the rotation of the rotor structure can be utilized to drive the blade 600 connected with the rotor structure to rotate, and the function of stirring without a rotating shaft can be realized.
On the other hand, the superconducting magnetic levitation stirrer of the embodiment has the advantages that the radial dimension of the superconducting magnetic levitation motor is reduced, so that the radial dimension of the superconducting magnetic levitation stirrer with the superconducting magnetic levitation motor can be reduced, when the superconducting magnetic levitation stirrer stretches into the reactor 20, the cross-sectional area of the stretching part of the superconducting magnetic levitation stirrer can be reduced, and further, reagents (such as biological reagents) adsorbed and remained on the surface of the superconducting magnetic levitation stirrer can be reduced, so that the subsequent disinfection and sterilization difficulty is reduced; the superconducting magnetic suspension stirrer of the embodiment has wide adaptation range and can reduce the generation and suspension of reaction liquid bubbles in the reactor 20.
It is known that the cross-sectional area of the superconducting magnetic levitation stirrer extending into the reactor 20 is reduced, and parameters such as power and/or torque of the superconducting magnetic levitation stirrer can be adjusted in order to ensure that the stirring efficiency of the superconducting magnetic levitation stirrer is not affected.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention.
Claims (10)
1. A superconducting magnetic levitation motor is characterized by comprising a mounting shell, a stator structure, a rotor structure (300) and a superconducting levitation structure, wherein,
the installation shell comprises a first shell (110) and a second shell (120), the first shell (110) is of a hollow structure and forms a first containing cavity (111), the first shell (110) and the second shell (120) are enclosed to form a second containing cavity (130),
the stator structure is arranged in the first accommodating cavity (111), the stator structure comprises a plurality of stator windings (210), the stator windings (210) are distributed along the circumferential direction of the first accommodating cavity (111), the superconducting suspension structure comprises a superconducting assembly and a permanent magnet (420), the superconducting assembly is positioned in the second accommodating cavity (130), the rotor structure (300) and the permanent magnet (420) are both positioned above the stator windings (210),
the stator winding (210) comprises a stator core (211) and stator coils (212), the stator coils (212) are wound outside the stator core (211), and the height of the stator coils (212) in the axial direction of the first accommodating cavity (111) is larger than the diameter of a structure surrounded by a plurality of the stator windings (210) in the radial direction of the first accommodating cavity (111).
2. A superconducting magnetic levitation motor according to claim 1, wherein the height of the stator coil (212) in the axial direction of the first accommodation chamber (111) satisfies: h: D=1.5 to 3:1, wherein,
h is the height of the stator coil (212) in the axial direction of the first accommodating cavity (111),
d is the diameter of the structure enclosed by the plurality of stator windings (210) in the radial direction of the first accommodating cavity (111).
3. The superconducting magnetic levitation motor according to claim 1, wherein the stator core (211) and the stator coil (212) each have a triangular cross section.
4. The superconducting magnetic levitation motor according to claim 1, wherein the stator core (211) is manufactured by rolling and molding silicon steel sheets, and the thickness of the silicon steel sheets is less than or equal to 0.1mm, and adjacent silicon steel sheets are connected by vacuum bonding.
5. The superconducting magnetic levitation motor according to claim 1, wherein the superconducting assembly comprises a superconducting block (411), a cold guide seat (412), a third accommodating cavity (413) and a conveying pipe (414), wherein a plurality of caulking grooves are formed in the circumferential direction of the end face of the cold guide seat (412), the superconducting block (411) is installed in the caulking grooves, the third accommodating cavity (413) is formed on the side face of the cold guide seat (412), and the conveying pipe (414) is used for conveying refrigerating materials into the third accommodating cavity (413).
6. The superconducting magnetic levitation motor according to claim 5, wherein when the superconducting block (411) is mounted in the caulking groove, a first gap (411 a) is provided between an end surface of the superconducting block (411) and a top wall of the second accommodation chamber (130).
7. A superconducting magnetic levitation motor according to claim 6, wherein the first gap (411 a) has a height of 2-5 mm in the axial direction of the second accommodation chamber (130).
8. The superconducting magnetic levitation motor of claim 5, wherein the second housing (120) comprises an upper housing (121) and a lower housing (122), wherein,
a part of the cold guide seat (412) is positioned in an accommodating space formed by the upper shell (121) and the first shell (110),
the other part of the cold guide seat (412), the third accommodating cavity (413) and the conveying pipe (414) are positioned in an accommodating space formed by the lower shell (122) and the first shell (110),
the outer diameter of the upper housing (121) is smaller than the outer diameter of the lower housing (122), and a step wall (123) is formed between the upper housing (121) and the lower housing (122).
9. The superconducting magnetic levitation motor according to any of claims 1-8, further comprising a mounting base (500), wherein a first mounting groove (510) and a second mounting groove (520) are formed in the mounting base (500), wherein the first mounting groove (510) and the second mounting groove (520) are coaxially arranged, and wherein the first mounting groove (510) is used for mounting the rotor structure (300), and wherein the second mounting groove (520) is used for mounting the permanent magnet (420).
10. A superconducting magnetic levitation stirrer, characterized by comprising a superconducting magnetic levitation motor (10) and a paddle (600), wherein the superconducting magnetic levitation motor (10) is a superconducting magnetic levitation motor according to any of claims 1 to 9, and the paddle (600) is connected with a mounting base (500) of the superconducting magnetic levitation motor (10).
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| CN202311441339.0A CN117498721B (en) | 2023-11-01 | 2023-11-01 | Superconducting magnetic suspension motor and superconducting magnetic suspension stirrer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118449318A (en) * | 2024-07-08 | 2024-08-06 | 槃实科技(深圳)有限公司 | Magnetic suspension motor and stirrer without dead zone |
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| US20010013734A1 (en) * | 2000-01-05 | 2001-08-16 | Hideki Kanebako | Magnetic levitation motor and method for manufacturing the same |
| CN202424591U (en) * | 2011-12-29 | 2012-09-05 | 成都英德生物工程有限公司 | Automatic magnetic levitation stirring mechanism |
| CN112837883A (en) * | 2020-12-31 | 2021-05-25 | 江西联创光电超导应用有限公司 | A superconducting magnet system |
| CN112865609A (en) * | 2021-03-02 | 2021-05-28 | 槃实科技(深圳)有限公司 | Magnetic suspension motor |
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| US20010013734A1 (en) * | 2000-01-05 | 2001-08-16 | Hideki Kanebako | Magnetic levitation motor and method for manufacturing the same |
| CN202424591U (en) * | 2011-12-29 | 2012-09-05 | 成都英德生物工程有限公司 | Automatic magnetic levitation stirring mechanism |
| CN112837883A (en) * | 2020-12-31 | 2021-05-25 | 江西联创光电超导应用有限公司 | A superconducting magnet system |
| CN112865609A (en) * | 2021-03-02 | 2021-05-28 | 槃实科技(深圳)有限公司 | Magnetic suspension motor |
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| CN118449318A (en) * | 2024-07-08 | 2024-08-06 | 槃实科技(深圳)有限公司 | Magnetic suspension motor and stirrer without dead zone |
| CN118449318B (en) * | 2024-07-08 | 2024-09-03 | 槃实科技(深圳)有限公司 | Stirrer without dead zone |
| CN118944360A (en) * | 2024-07-08 | 2024-11-12 | 槃实科技(深圳)有限公司 | A new type of magnetic levitation motor |
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| CN117498721B (en) | 2024-06-28 |
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