CN117558549B - Double-pancake coil coiling method for MRI (magnetic resonance imaging) superconducting - Google Patents
Double-pancake coil coiling method for MRI (magnetic resonance imaging) superconducting Download PDFInfo
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- CN117558549B CN117558549B CN202311793783.9A CN202311793783A CN117558549B CN 117558549 B CN117558549 B CN 117558549B CN 202311793783 A CN202311793783 A CN 202311793783A CN 117558549 B CN117558549 B CN 117558549B
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- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000002595 magnetic resonance imaging Methods 0.000 title description 33
- 238000004804 winding Methods 0.000 claims abstract description 115
- 239000004020 conductor Substances 0.000 claims abstract description 98
- 150000001875 compounds Chemical class 0.000 claims abstract description 52
- 230000007704 transition Effects 0.000 claims abstract description 43
- 238000004519 manufacturing process Methods 0.000 claims abstract description 29
- 235000012771 pancakes Nutrition 0.000 claims abstract description 25
- 238000009413 insulation Methods 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 10
- 238000007493 shaping process Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 239000006247 magnetic powder Substances 0.000 description 7
- 241001093269 Helicodiscus parallelus Species 0.000 description 3
- 238000005481 NMR spectroscopy Methods 0.000 description 3
- 238000004435 EPR spectroscopy Methods 0.000 description 2
- 238000013473 artificial intelligence Methods 0.000 description 2
- 238000002059 diagnostic imaging Methods 0.000 description 2
- 208000014644 Brain disease Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 208000019622 heart disease Diseases 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
- 230000010076 replication Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/048—Superconductive coils
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/06—Coil winding
- H01F41/096—Dispensing or feeding devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
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Abstract
The invention discloses a method for coiling an MRI superconducting double-pancake coil in a rewinding way, which relates to the technical field of MRI superconducting coil manufacturing and comprises double-pancake coil transition, first pancake coil coiling and second pancake coil coiling. The conductor is wound in two compound wire reels in a transition mode according to length halving, a second compound wire reel is arranged at the top of the winding rotary platform, and the conductor of the compound wire reel is not discharged in the first cake winding process. The middle of the conductor is fixed on a winding die in a winding rotary platform, the first compound wire coil is rotated for paying off, the first compound wire coil is moved to the paying-off platform for fixing, the conductor is installed on each device on a production line, and the first coil cake winding is carried out. After the first cake winding of the coil is completed, the second compound wire disc is detached from the rotary platform, the coil is rotated and paid out, the coil is moved to the paying-off platform to be fixed, the second cake winding of the coil is performed, and the winding of the MRI superconducting double-cake coil is completed. The invention can realize double cake winding forming transition of the MRI superconducting coil and reduce the winding difficulty.
Description
Technical Field
The invention relates to the technical field of manufacturing of MRI superconducting coils, in particular to a method for coiling an MRI superconducting double-pancake coil in a rewinding way, which is used for coiling and forming the MRI superconducting double-pancake coil.
Background
MRI, i.e. magnetic resonance imaging, is fully known in english: magnetic Resonance Imaging it contains Nuclear Magnetic Resonance (NMR), electron Paramagnetic Resonance (EPR) or Electron Spin Resonance (ESR). In general terms, nuclear magnetic resonance and the type of medical imaging tools made therefrom.
14 The T ultra-high field intensity and high uniformity MRI is the development trend of future medical imaging, and has irreplaceable effects in diagnosis and treatment of early brain diseases, early cancers and early heart diseases; 14T ultra-high field intensity and high uniformity MRI is the foundation for the development of future artificial intelligence, especially the research of brain nervous system, and will open up a new path for the research of artificial intelligence and consciousness behavior.
The MRI superconducting coil is a core component in MRI equipment, can provide a 14T ultra-high field strength and high uniformity magnetic field, is formed by stacking a plurality of MRI superconducting double-cake coils, has high manufacturing difficulty, and can be safely and stably put into use after being wound and formed by special forming equipment. The method for coiling the MRI superconducting double-pancake coil is a key procedure in the manufacturing process of the MRI superconducting coil.
Disclosure of Invention
In order to solve the technical problem of forming in the winding process of the MRI superconducting double-pancake coil, the invention provides a double-winding method of the MRI superconducting double-pancake coil, which comprises the steps of double-pancake transition of the coil, first pancake winding and second pancake winding. The conductor is wound in two compound wire reels in a transition mode according to length halving, a second compound wire reel is arranged at the top of the winding rotary platform, and the conductor of the compound wire reel is not discharged in the first cake winding process. The middle of the conductor is fixed on a winding die in a winding rotary platform, the first compound wire coil is rotated for paying off, the first compound wire coil is moved to the paying-off platform for fixing, the conductor is installed in each device, and the first cake winding of the coil is performed. After the first cake of the coil is wound, the second compound wire disc is detached from the winding rotary platform, the coil is rotated and paid out, the coil is moved to the paying-off platform to be fixed, the second cake of the coil is wound, and the MRI superconducting double-cake coil winding is completed. The invention can realize double cake winding forming transition of the MRI superconducting coil and reduce winding difficulty.
In order to achieve the above purpose, the invention adopts the following technical scheme:
an MRI superconducting double-pancake coil coiling method comprises coil double-pancake transition, first pancake coiling and second pancake coiling; wherein,
the double-pancake coil transition comprises a first pancake rewinding transition of a coil, a second pancake rewinding transition of the coil and a second pancake rewinding transition of the coil so as to complete double-pancake transition of the coil, and a transition double-pancake coil with all ends positioned at the inner side is provided for subsequent superconducting double-pancake coil winding;
the first cake winding of the coil comprises first complex coil mounting, first cake production line conductor mounting and automatic winding forming;
the second cake winding of the coil comprises disassembly and assembly of a first compound coil, installation of a second cake production line conductor of the coil and automatic winding and forming;
further, the first cake rewinding transition of the coil is to rewind a half-length of the conductor on the conductor drum at the pay-off rack to a first rewinding disc connected with the horizontal winding machine;
further, the second cake rewinding transition of the coil is to rewind the rest half length of the conductor on the conductor drum at the pay-off rack to the second layer of disc surface on the first rewinding disc connected with the horizontal winding machine, at the moment, the front conductor end of the first rewinding disc is positioned inside, and the conductor end of the second layer of disc surface is positioned outside;
further, the second cake rewinds again, namely a first rewiring disc is arranged at a pay-off rack, a conductor end of a second layer disc surface of the first rewiring disc is fixed on a second rewiring disc connected with a horizontal winding machine, the second cake rewiring is carried out, and after the rewiring is completed, the ends of the first cake of the coil and the second cake of the coil are all inside;
further, the second compound coil is installed on the top of a winding rotary platform of production line equipment. The first compound wire disc rotates to pay off while moving to a paying-off platform, and the first compound wire disc is arranged on the paying-off platform;
further, the first cake production line conductor installation of the coil is characterized in that the middle section of the conductor is installed and fixed on an inner winding die of a winding rotary platform, the conductor on the production line is installed to a straightening and correcting mechanism, an insulating automatic wrapping machine and a conductor guiding mechanism, and a paying-off platform is retracted to straighten the conductor on the production line;
further, after the tension of the conductor at the paying-off platform is set, the automatic winding function of the first cake coil of the winding rotary platform is started to complete the winding of the first cake coil, and at the moment, the second compound wire disc rotates along with the winding rotary platform, and the conductor on the second compound wire disc is not paid out;
further, the first compound wire reel is disassembled, and the first compound wire reel at the paying-off platform is disassembled and lifted off the production line. Disassembling a second rewinding disc on the winding rotary platform, paying off while rotating in the process of lifting to the paying-off platform, and fixing the second rewinding disc on the paying-off platform;
further, the second cake production line conductor of the coil is installed in the same content as the first cake production line conductor of the coil;
further, the second cake of the coil is automatically wound and formed, after the tension of the conductor at the paying-off platform is set, the automatic winding function of the second cake coil of the winding rotary platform is started, and the coil is wound and formed on the second layer to form the second cake coil.
Compared with the prior art, the invention has the beneficial effects that:
the invention can realize double-cake winding forming transition of the MRI superconducting coil, and double-cake transition coils with double cake ends are formed by carrying out double-disk transition on conductors by using double-disk coils.
The invention can realize double cake forming of the MRI superconducting coil, and uses special equipment of a production line to carry out first cake winding forming and second cake winding forming of the double cake transition coil with the end head of the double cake transition coil.
Drawings
FIG. 1 is a diagram of a coil rewinding transition process of the MRI superconducting double-pancake coil rewinding method of the present invention;
FIG. 2 is a second pancake re-winding process of the MRI superconducting double pancake coil re-winding method of the present invention;
FIG. 3 is a diagram of an automated winding process for a first pancake production line of a coil of the MRI superconducting double pancake coil multi-winding method of the present invention;
FIG. 4 is a diagram of an automated winding process for a second pancake production line of a coil of the MRI superconducting double pancake coil multi-winding method of the present invention;
FIG. 5 is a state diagram of the coil during the coil rewinding transition of the MRI superconducting double pancake coil rewinding method of the present invention;
FIG. 6 is a state diagram of a coil during a first pancake winding of a coil of the MRI superconducting double pancake coil multi-winding method of the present invention;
fig. 7 is a state diagram of a coil during a second pancake winding of a coil of the MRI superconducting double pancake coil rewinding method of the present invention.
In the figure:
the device comprises a conductor cylinder, a 102-pay-off rack, a 103-magnetic powder clutch, a 104-first rewinding disk and a 105-horizontal winding machine; 106-a conductor guiding mechanism;
201-a second multiplex disc;
301-winding rotary platform compound wire disc bracket, 302-winding rotary platform, 303-paying-off platform, 304-conductor front guide mechanism, 305-straightening corrector, 306-insulation automatic wrapping machine and 307-conductor rear guide mechanism.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the prior art, the drawings that are used in the description of the prior art and embodiments will be briefly described below.
The invention discloses a method for coiling an MRI superconducting double-pancake coil in a rewinding way.
Because the common coil winding mode directly connects the conductor from the conductor cylinder to the winding machine and completes winding, for the special structure of the double-pancake coil, the conductor is transitionally wound on the rewinding disc from the conductor cylinder so as to facilitate the subsequent winding of the double-pancake coil, and the process is called rewinding.
The coil double-cake transition comprises a coil rewinding transition and a second cake rewinding, and is used for rewinding conductors from the conductor cylinder 101 to the first rewinding disc 104 and the second rewinding disc 201, and then winding the double-cake transition coils with two ends of the double cakes in a winding production line.
As shown in fig. 1 and 5, the specific implementation process of the coil rewinding transition is as follows: the conductor cylinder 101 with the conductor is lifted to the pay-off rack 102, the shaft rod is inserted into the center of the conductor cylinder 101, the magnetic powder clutch 103 and the bearing seat are arranged at the top end of the pay-off rack 102, and the shaft rod on the conductor cylinder 101 passes through the bearing seat and is connected with the magnetic powder clutch 103. The first wire rewinding disc 104 is lifted to the position of the horizontal winding machine 105, the main box and the tail box of the horizontal winding machine 105 are moved to carry out position adjustment, the axis of the first wire rewinding disc 104 is propped, and a conductor guiding mechanism 106 for guiding is arranged between the wire unwinding frame 102 and the horizontal winding machine 105. The end of the conductor on the conductor drum 101 is arranged on the inner die of the first layer disc surface of the first compound wire disc 104, the tension is set through the magnetic powder clutch 103, after the rotation speed of the horizontal winding machine 105 is set, the horizontal winding machine 105 is started to perform first cake rewinding transition of the coil, after the rewinding transition of the conductor with half length is completed, the horizontal winding machine 105 is stopped, and the wound coil is fixed by using a clamp. The conductor is led into the second layer disc surface internal mold of the first compound disc 104, the magnetic powder clutch 103 is started, the tension is set, the horizontal winding machine 105 is started, the second cake compound winding transition is completed, and the wound conductor is fixed.
As shown in fig. 2 and 6, the implementation process of the second cake rewinding transition is as follows: the conductor tube 101 is removed from the pay-off rack 102, the first compound wire coil 104 is detached from the horizontal wire winding machine 105, a shaft rod is arranged at the axis, the first compound wire coil 104 is lifted to the pay-off rack 102 and is connected with the bearing seat and the magnetic powder clutch 103, the second compound wire coil 201 is arranged at the horizontal wire winding machine 105, the conductor end of the rewound transition tail end of the second layer disc surface of the first compound wire coil 104 is fixed on the first layer disc surface inner die of the second compound wire coil 201, the tension is set through the magnetic powder clutch 103, the horizontal wire winding machine 105 is started to rewind the second cake of the coil, the double-cake transition of the coil is completed, the horizontal wire winding machine 105 is stopped, and the wound conductor is fixed. At this time, the conductor ends on the first multiplex board 104 and the second multiplex board 201 are all inside the first multiplex board 104 and the second multiplex board 201.
The first cake winding of the coil comprises complex wire coil installation, first cake production line conductor installation of the coil and automatic winding forming. The specific implementation process of the complex coil is as follows: the second compound wire disc 201 is horizontally placed and lifted above the winding rotary platform 302, the second compound wire disc 201 is fixed on the top of the winding rotary platform compound wire disc bracket 301 by using bolts, the second compound wire disc 201 can rotate along with the winding rotary platform 302 in the winding process, namely, in the winding process, conductors on the second compound wire disc 201 cannot be discharged. The first compound wire disc 104 is horizontally hung and moved towards the paying-off platform 303, the first compound wire disc 104 is rotated to pay off in the moving process, and when the first compound wire disc 104 moves to the position above the paying-off platform 303, bolts are used for fixing the first compound wire disc 104 and the paying-off platform 303.
The specific implementation process of the first cake production line conductor installation of the coil is as follows: the conductor is sequentially installed in a conductor front guide mechanism 304, a straightening corrector 305, an insulation automatic wrapping machine 306 and a conductor rear guide mechanism 307, the insulation piece is manually wrapped from the middle section of the conductor to the insulation automatic wrapping machine 306, the insulation piece on the wrapping head of the insulation automatic wrapping machine 306 is sequentially connected to the conductor, the middle section of the conductor is fixed on an inner wrapping die of a winding rotary platform 302, the first wire replication disc 104 is manually reversed to recover the conductor, the conductor on the production line is straightened, and a pinch roller of the straightening corrector 305 is adjusted to clamp the conductor.
As shown in fig. 3, the specific implementation process of the automatic winding and forming of the first cake of the coil is as follows: tension is set at the paying-off platform 303, the winding rotary platform 302 and the insulating automatic winding machine 306 are started, and the first cake of the coil is automatically wound. After the first cake of coil is wound, the tail of the conductor on the winding rotary platform 302 is fixed and the conductor is cut off.
The second cake winding of the coil comprises dismounting of a compound wire coil, installation of a second cake production line conductor of the coil and automatic winding forming. The specific implementation process of the disassembly and assembly of the compound coil is as follows: the first compound wire disc 104 is detached from the paying-off platform 303 and lifted away, the second compound wire disc 201 is detached from the top of the compound wire disc bracket 301 of the coiling rotary platform, the second compound wire disc 201 is lifted horizontally, the second compound wire disc 201 is moved while being rotated for paying-off in the process of moving, the second compound wire disc is moved to the position above the coiling rotary platform 302, and the second compound wire disc 201 and the paying-off platform 303 are fixed by bolts.
The specific implementation process of the coil second cake production line conductor installation is as follows: the conductor is sequentially installed in a conductor front guide mechanism 304, a straightening corrector 305, an insulation automatic wrapping machine 306 and a conductor rear guide mechanism 307, the insulation piece is manually wrapped from the middle section of the conductor to the insulation automatic wrapping machine 306, the insulation piece on the wrapping head of the insulation automatic wrapping machine 306 is sequentially connected to the conductor, the second wire rewinding disc 201 is manually reversed to recover the conductor, the conductor on the production line is straightened, and the pinch roller of the straightening corrector 305 is adjusted to clamp the conductor.
As shown in fig. 4, the implementation process of the automatic winding and forming of the second cake of the coil is as follows: tension is set at the paying-off platform 303, the winding rotary platform 302 and the insulating automatic winding machine 306 are started, and the second cake of the coil is automatically wound. After the second cake of coil is wound, the tail of the conductor on the winding rotary platform 302 is fixed and the conductor is cut off.
Fig. 7 is a state diagram of the coil during the second pancake winding of the coil of the MRI superconducting double pancake coil re-winding method according to the present invention.
While the foregoing has been described in relation to illustrative embodiments thereof, so as to facilitate the understanding of the present invention by those skilled in the art, it should be understood that the present invention is not limited to the scope of the embodiments, but is to be construed as limited to the spirit and scope of the invention as defined and defined by the appended claims, as long as various changes are apparent to those skilled in the art, all within the scope of which the invention is defined by the appended claims.
Claims (3)
1. A method for coiling an MRI superconducting double-pancake coil is characterized by comprising the following steps: the method comprises the steps of coil double-pancake transition, first pancake winding of a coil and second pancake winding of the coil;
the coil double-cake transition comprises a coil rewinding transition and a second cake rewinding transition so as to complete the coil double-cake transition, and a transition double-cake coil with all ends positioned at the inner side is provided for subsequent winding of the superconducting double-cake coil; the coil rewinding transition comprises a first cake rewinding transition of a coil and a second cake rewinding transition of the coil;
the first cake rewinding transition of the coil rewinds a half-length of the conductor on the conductor drum (101) at the pay-off rack to a first rewinding disc (104) connected with the horizontal winding machine;
the second cake rewinding transition of the coil rewinds the rest half length of the conductor on the conductor drum (101) at the pay-off rack to a second layer of disc surface on a first rewinding disc (104) connected with the horizontal winding machine, at the moment, the front conductor end of the first rewinding disc (104) is positioned inside, and the conductor end of the second layer of disc surface is positioned outside;
the second cake rewinds, the first rewinding disc (104) is arranged at the pay-off frame, the conductor end of the second layer disc surface of the first rewinding disc (104) is fixed on a second rewinding disc (201) connected with the horizontal winding machine, the second cake rewinds again, and the ends of the first cake of the coil and the second cake of the coil after the rewinds are arranged inside;
the first cake winding of the coil comprises the installation of a second compound wire coil (201), the installation of a first compound wire coil (104), the installation of a first cake production line conductor of the coil and automatic winding and forming;
the second cake winding of the coil comprises the steps of disassembling a first compound wire coil (104), installing a second compound wire coil (201), installing a second cake production line conductor of the coil and automatically winding and forming;
the automatic winding forming of the first pancake of the coil includes: after the tension of the conductor at the paying-off platform is set, starting the automatic winding function of the first cake coil of the winding rotary platform to complete the winding of the first cake coil, and enabling the second compound wire disc to rotate along with the winding rotary platform at the moment, wherein the conductor on the second compound wire disc is not paid out;
the automatic winding and shaping of the second cake of the coil comprises the following steps: after the conductor tension at the paying-off platform is set, the automatic winding function of a second cake coil of the winding rotary platform is started, and the coil is wound on a second layer to form a second cake coil;
winding the superconducting double-pancake coil by adopting a first multiplexing disc (104) and a second multiplexing disc (201), wherein a winding starting point is a conductor middle section between the first multiplexing disc (104) and the second multiplexing disc (201); after the conductor is installed on the equipment on the production line, a first cake of the coil is automatically wound by the production line from the middle section of the conductor, and a second cake of the coil is continuously automatically wound from the middle section of the conductor after the completion; the first compound wire coil (104) and the second compound wire coil (201) are adopted to wind conductors into transitional double-pancake coils with the ends both positioned at the inner side, and then the transitional double-pancake coils are wound into MRI superconducting double-pancake coils with the ends both positioned at the outer side.
2. The method for rewinding the MRI superconducting double-pancake coil according to claim 1, characterized in that: a single long conductor is divided into two and wound on a first multiplexing disc (104) and a second multiplexing disc (201).
3. The method for rewinding the MRI superconducting double-pancake coil according to claim 1, characterized in that: the equipment on the production line comprises a paying-off platform (303), a conductor front guide mechanism (304), a straightening corrector (305), an insulation automatic wrapping machine (306), a conductor rear guide mechanism (307) and a winding rotary platform (302) which are sequentially arranged.
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| CN202311793783.9A CN117558549B (en) | 2023-12-25 | 2023-12-25 | Double-pancake coil coiling method for MRI (magnetic resonance imaging) superconducting |
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| CN202311793783.9A CN117558549B (en) | 2023-12-25 | 2023-12-25 | Double-pancake coil coiling method for MRI (magnetic resonance imaging) superconducting |
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