CN114255959B

CN114255959B - Multipole electromagnet

Info

Publication number: CN114255959B
Application number: CN202111608891.5A
Authority: CN
Inventors: 王辉; 那斌; 戴旭文; 张亮; 郭润兵; 管国华
Original assignee: Beijing High Energy Ruixin Technology Co ltd
Current assignee: Beijing High Energy Ruixin Technology Co ltd
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2023-07-04
Anticipated expiration: 2041-12-27
Also published as: CN114255959A

Abstract

The application discloses multipole electromagnet includes: the iron core is of an integrated structure and comprises a closed outer frame and a plurality of magnetic poles arranged in the outer frame; the excitation wire plates are arranged on one magnetic pole in a surrounding mode, each excitation wire plate comprises a plurality of plate electrodes which are arranged in a stacked mode, each plate electrode comprises a closed annular structure formed by a frame plate and a connecting plate, the plurality of plate electrodes form spiral windings around the magnetic pole, and the frame plate is detachably connected with the connecting plate; the cooling devices are arranged on one excitation line plate in a surrounding mode, each cooling device comprises a plurality of cooling boxes which are detachably connected, and circulating pipelines surrounding the excitation line plate are arranged on the cooling boxes. The multipole electromagnet reduces the assembly error of the small-aperture whole iron core, avoids the problem that the wire board of the small-aperture whole iron core cannot be installed, and simultaneously enhances the cooling effect of the wire board after being electrified and prevents the wire board from being overheated.

Description

Multipole electromagnet

Technical Field

The present application relates generally to the field of radiation light sources, and in particular, to a multipole electromagnet.

Background

Synchrotron radiation light sources are an indispensable large scientific research platform for numerous basic research disciplines and high-tech development and application research. The development of the future science and technology puts higher demands on the performance of the synchrotron radiation light source, the beam cross section size and the beam emittance of the new generation of synchrotron radiation light source are further reduced, and correspondingly, the aperture of the magnet is also smaller and smaller. The high gradient small aperture magnet technology is one of the key technologies of the new generation of synchrotron radiation light sources.

At present, iron cores of small-aperture magnets of a synchronous radiation light source are of a block structure, each iron core needs to be processed independently, and magnet coils are processed in a traditional mode, namely, the iron cores are wound independently and then mounted on each iron core magnet after processing. Each iron core and the coil are assembled after being assembled to form a whole iron, and larger assembly errors are brought.

The high-order component of the magnetic field of the small-aperture magnet is very sensitive to the mechanical error of the magnetic pole, if precision machining equipment is adopted, the machining precision of a single magnetic pole of the small-aperture magnet can reach a higher level, but the mechanical precision of the assembled magnet is difficult to ensure due to the existence of the assembly error of the iron core, so that the magnetic field precision is influenced. Therefore, by adopting the traditional magnet processing and assembling technology, the magnetic field precision is difficult to ensure due to the high gradient of the magnet and the small aperture.

Disclosure of Invention

In view of the above-described drawbacks or shortcomings of the prior art, it is desirable to provide a multipole electromagnet that eliminates core assembly errors in conventional magnet manufacturing techniques and has a cooling function.

The application provides a multipole electromagnet comprising:

the iron core is of an integrated structure and comprises a closed outer frame and a plurality of magnetic poles arranged in the outer frame;

the excitation wire plates are arranged on one magnetic pole in a surrounding mode, each excitation wire plate comprises a plurality of plate-shaped electrodes which are arranged in a stacked mode, each plate-shaped electrode comprises a closed annular structure formed by a frame plate and a connecting plate, the plurality of plate-shaped electrodes form spiral windings around the magnetic pole, and the frame plate and the connecting plate are detachably connected;

the cooling devices are arranged on one excitation line plate in a surrounding mode, each cooling device comprises a plurality of cooling boxes which are detachably connected, and circulating pipelines surrounding the excitation line plate are arranged on the cooling boxes.

Optionally, the frame plates arranged adjacently in a stacked manner are electrically connected through the connecting plates; one end of the connecting plate is electrically connected with the frame plate on the same layer, and the other end of the connecting plate is electrically connected with the frame plate on the lower layer.

Optionally, the frame plate includes a first end and a second end, and the connecting plate includes a first sub-end corresponding to the first end position and a second sub-end corresponding to the second end position;

the frame plates are arranged in an insulating way;

the first sub-end and the first end positioned on the same layer are arranged in an insulating way at a contact position, and the second sub-end and the second end positioned on the same layer are arranged in a conductive way at the contact position;

the first sub-end and the first end positioned at the lower layer can be arranged in a conductive way at a contact position, and the second sub-end and the second end positioned at the lower layer are arranged in an insulating way at the contact position.

Optionally, a plurality of insulating fixing rods are arranged on the exciting wire plate, and the insulating fixing rods extend out of the surface of the plate-shaped electrode at one end close to the outer frame;

the insulating dead lever passes through L type fixed block fixed setting on the frame, wherein, L type fixed block includes two connecting blocks of perpendicular setting, one of them the connecting block with frame fixed connection, another the connecting block with insulating dead lever is connected.

Optionally, the number of the iron cores is multiple, a plurality of the iron cores are fixedly connected through connecting rods, the positions of the magnetic poles on the iron cores correspond to each other, and the same magnetic pole on the iron cores is arranged around the exciting line plate.

Optionally, the iron core includes a first magnetic pole, a second magnetic pole, a third magnetic pole and a fourth magnetic pole, the magnetism of the first magnetic pole and the magnetism of the second magnetic pole which are adjacently arranged are opposite, the magnetism of the first magnetic pole and the magnetism of the third magnetic pole which are oppositely arranged are the same, and the magnetism of the second magnetic pole and the magnetism of the fourth magnetic pole which are oppositely arranged are the same.

Optionally, a first excitation wire plate on the first magnetic pole is arranged in series with a second excitation wire plate on the second magnetic pole; the third excitation line plate on the third magnetic pole is connected with the fourth excitation line plate on the fourth magnetic pole in series; the power-out terminal of the first excitation wire plate is electrically connected with the power-in terminal of the second excitation wire plate, and the power-out terminal of the third excitation wire plate is electrically connected with the power-in terminal of the fourth excitation wire plate through a corner plate, and the corner plate is of an L-shaped structure.

Optionally, the surface of the exciting wire plate is coated with an insulator, the insulator comprises an insulating plate and an insulating film, and the insulating film is arranged on the outer surface of the exciting wire plate, which is in contact with the cooling device.

Optionally, the cooling boxes are of a U-shaped structure, the number of the cooling boxes is two, and the two cooling boxes are fixedly connected through a locking piece; and a fixing piece fixedly connected with the outer frame is further arranged on the cooling box.

Optionally, the circulation pipeline comprises a plurality of layers of heat pipes, wherein one end of the heat pipe is connected with a previous layer of heat pipes, and the other end of the heat pipe is connected with a next layer of heat pipes.

The technical scheme provided by the embodiment of the application can comprise the following beneficial effects:

the multipole electromagnet provided by the embodiment of the application reduces the assembly error of the small-aperture whole iron core by arranging the iron core into an integral structure, and cooperates with the integral iron core through a plurality of excitation wire plates, so that the problem that an ordinary coil cannot be mounted in the small-aperture whole iron core is avoided.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings, in which:

fig. 1 is a schematic structural diagram of a multipole electromagnet according to an embodiment of the present disclosure;

FIG. 2 is a side view of a multipole electromagnet provided in an embodiment of the present application;

fig. 3 is a schematic structural diagram of a quadrupole magnet core according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of another quadrupole magnet core according to an embodiment of the present application;

FIG. 5 is a schematic view of a multipole electromagnet with a cooling device removed according to an embodiment of the present application;

FIG. 6 is a front view of a multipole electromagnet with a cooling device removed provided in an embodiment of the present application;

fig. 7 is a schematic structural diagram of an exciting coil according to an embodiment of the present application;

FIG. 8 is a schematic cross-sectional view of an excitation coil provided in an embodiment of the present application;

FIG. 9 is a schematic structural view of a plate electrode according to an embodiment of the present disclosure;

fig. 10 is a schematic structural view of another plate electrode according to an embodiment of the present application;

FIG. 11 is a schematic diagram of a winding method of an exciting coil according to an embodiment of the present application;

FIG. 12 is a schematic structural view of a frame plate according to an embodiment of the present application;

fig. 13 is a schematic structural view of a connection board according to an embodiment of the present application;

FIG. 14 is a front view of a connection plate provided by an embodiment of the present application;

FIG. 15 is a perspective view of an L-shaped fixing block provided in an embodiment of the present application;

fig. 16 is a schematic structural diagram of an excitation wire board according to an embodiment of the present disclosure;

FIG. 17 is a schematic enlarged view of a section at S-S in FIG. 16;

FIG. 18 is a schematic structural view of a cooling device according to an embodiment of the present disclosure;

FIG. 19 is a schematic view of another cooling device according to an embodiment of the present disclosure;

FIG. 20 is a schematic view of a U-shaped cooling box according to an embodiment of the present disclosure;

fig. 21 is a schematic structural diagram of a circulation pipe according to an embodiment of the present application.

Detailed Description

The present application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the invention are shown in the drawings.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Through research, if the iron core of the magnet is integrally formed at one time, the iron core assembly error in the conventional magnet manufacturing technology can be eliminated. However, the gaps between the adjacent magnetic poles of the small-aperture magnet are very small, so that the coil cannot be directly sleeved into the gap between the magnetic poles for assembly.

In addition, the existing coil has some disadvantages:

(1) The coil is formed by adopting an oxygen-free copper hollow wire, firstly winding in a winding mold and then epoxy casting in a casting mold, and the whole link process is complex and the workload is large.

(2) The coil is made of more materials, such as epoxy resin materials, mold materials, copper wire customization and the like.

(3) Coil processing occupies a large working space, such as winding and casting sites.

(4) For a small-aperture magnet, the iron core needs to be processed in a blocking mode to be sleeved with the coil, and the coil can be directly installed by a special large-aperture magnet.

Referring to fig. 1 and 2, a multipole electromagnet includes: the iron core 1, iron core 1 is integrated into one piece structure, iron core 1 includes closed frame 11 and sets up a plurality of magnetic poles 10 in the frame 11 inside.

A plurality of excitation wire plates 2, each excitation wire plate 2 is arranged around one magnetic pole 10, the excitation wire plate 2 comprises a plurality of plate-shaped electrodes 20 which are arranged in a stacked manner, each plate-shaped electrode 20 comprises a closed annular structure formed by a frame plate 21 and a connecting plate 22, the plurality of plate-shaped electrodes 20 form a spiral winding around the magnetic pole 10, and the frame plate 21 and the connecting plate 22 are detachably connected.

A plurality of cooling devices 3, each cooling device 3 is arranged on one exciting line plate 2 in a surrounding way, the cooling device 3 comprises a plurality of cooling boxes 30 which are detachably connected, and the cooling boxes 30 are provided with circulating pipelines 40 which surround the exciting line plates 2.

In the embodiment of the application, a novel small-aperture magnet manufacturing technology is provided, the iron core 1 of the magnet is integrated in the transverse direction (the cross section direction), and the assembly error of the iron core 1 in the traditional magnet manufacturing technology is eliminated. The wire board is directly assembled and molded on the iron core 1 by a plurality of frame plates 21 and connecting plates 22 which are detachably connected, so that the problem that the traditional coil with small magnet aperture cannot be installed in manufacturing is avoided. The detachable cooling box 30 structure is adopted on the wire board, so that the cooling device 3 wrapping the periphery of the outer side of the exciting wire board 2 is formed, and the problem that the wire board cannot be cooled due to heating after being electrified is solved.

Iron core 1

As shown in fig. 3 and 4, the iron core 1 is of an integral structure, and the iron core 1 includes a closed outer frame 11 and a plurality of magnetic poles 10 disposed inside the outer frame 11.

In the embodiment of the present application, the number of the magnetic poles 10 on the iron core 1 is not limited, and the beam homogenizing devices used at home and abroad are classified into two types, i.e., nonlinear multipole iron and nonlinear stepped field diode magnet. For example, a quadrupole magnet, a hexapole magnet, an octapole magnet, a dodecapole magnet, and the like. The technical scheme of the application can be applied to multiple types of multipole magnets. In the present embodiment, a quadrupole magnet is exemplified.

Fig. 3 is a schematic diagram of a small-aperture whole iron core 1, where the iron core 1 includes a first magnetic pole a, a second magnetic pole B, a third magnetic pole C, and a fourth magnetic pole D, the magnetic polarities of the first magnetic pole a and the second magnetic pole C that are adjacently disposed are opposite, the magnetic polarities of the first magnetic pole a and the third magnetic pole C that are oppositely disposed are the same, and the magnetic polarities of the second magnetic pole B and the fourth magnetic pole D that are oppositely disposed are the same.

In addition, as shown in fig. 4, the number of the iron cores 1 is plural, a plurality of the iron cores 1 are fixedly connected by a connecting rod 12, the positions of the respective magnetic poles 10 on the plurality of the iron cores 1 correspond, and the same magnetic pole 10 on the plurality of the iron cores 1 is arranged around by one exciting line plate 2.

In the embodiment of the present application, the number of the iron cores 1 in the longitudinal arrangement direction is not limited, and may be selected as required in application of different application scenarios, and in the embodiment of the present application, two iron cores 1 are longitudinally arranged for illustration. In the present embodiment, the longitudinal direction is defined as the direction along which the magnetic pole 10 extends, and the magnetic pole 10 is thick in the longitudinal direction; the transverse direction is defined as the cross-sectional direction of the core 1, including the respective poles 10 in cross-section. In addition, at both ends of the core 1, the first end and the second end are both ends in the longitudinal direction, which are described.

Excitation wire board 2

As shown in fig. 5 to 8, the iron core 1 is an integral body due to the small aperture of the magnet, and the conventional wire board cannot be directly sleeved. In order to enable the assembly and forming of the line board directly on the iron core 1, the application provides an excitation line board 2 structure capable of being installed in an inserting mode.

The exciting wire plate 2 comprises a plurality of plate electrodes 20 arranged in a stacked manner, each plate electrode 20 comprises a closed annular structure formed by a frame plate 21 and a connecting plate 22, the plurality of plate electrodes 20 form a spiral winding around the magnetic pole 10, and the frame plate 21 and the connecting plate 22 are detachably connected. Wherein, the frame plates 21 which are adjacently arranged in a stacked manner are electrically connected through the connecting plates 22; one end of the connection plate 22 is electrically connected to the frame plate 21 of the same layer, and the other end is electrically connected to the frame plate 21 of the lower layer.

In the embodiment of the present application, the plate electrode 20 is formed by a two-part structure that is detachably connected, and includes a frame plate 21 and a connecting plate 22, it should be noted that, in the embodiment of the present application, the open positions of the frame plate 21 and the connecting plate 22 in the rectangular closed structure are not limited, and in the embodiment of the present application, for example, the frame plate 21 and the connecting plate 22 are open positions at one end of the rectangular closed structure as a boundary, as shown in fig. 9; alternatively, the open position at the middle of the rectangular enclosure as a demarcation is shown in fig. 10, although in other embodiments, any position of the rectangular enclosure is also possible.

In the embodiment of the present application, the disconnection position with the end portion as the boundary is described as an example, and the connection method of any other disconnection position may refer to the connection method of the present application. This application is not set forth in any way. In this case, the spiral winding structure surrounding the iron core 1 is formed by the exciting wire plate 2, and the frame plate 21 and the connecting plate 22 are not directly connected in a completely closed type at both end positions on the same layer, but are electrically connected at one fixed end by the frame plate 21 and the connecting plate 22, and are electrically connected with the plate electrode 20 at the lower layer at the other fixed end.

Thus, when in installation, the frame plates 21 which are adjacently arranged in a stacked manner are electrically connected with each other through the connecting plates 22; one end of the connection plate 22 is electrically connected to the frame plate 21 of the same layer, and the other end is electrically connected to the frame plate 21 of the lower layer. In the embodiment of the present application, the plate electrode 20 between two adjacent layers needs to be insulated at the position of the electrical connection, and therefore, the insulating layer 23 is disposed between the two connecting plates 22 that are adjacent to each other up and down and between the two frame plates 21 that are connected up and down, and the insulating layer 23 is not limited to be disposed on the upper surface or the lower surface of the plate electrode 20.

In the present embodiment, the connection plate 22 is an electric connection bridge connecting the present layer of frame plates 21 and the lower layer of frame plates 21, and forms an important part of the spiral wound structure. As shown in fig. 11, for the connection mode in which the plate electrode 20 can be expressed as M/N/P/T, the spiral winding mode can be expressed as:

M1-N1-P1-T1-M2-N2-P2-T2。

in this embodiment, as shown in fig. 12, the frame plate 21 includes a first end 211 and a second end 212, and the connection plate 22 includes a first sub-end 221 corresponding to the position of the first end 211 and a second sub-end 222 corresponding to the position of the second end 212. The frame plates 21 are arranged in an insulating way; the first sub-end 221 is insulated from the first end 211 at the same layer at a contact position, and the second sub-end 222 is conductively arranged from the second end 212 at the same layer at a contact position; the first sub-end 221 is electrically conductive to the first end 211 at the lower layer at a contact position, and the second sub-end 222 is insulated from the second end 212 at the lower layer at a contact position.

Thus, when the connection plate 22 is provided, as shown in fig. 13 to 14, the connection plate 22 includes a metallic main structure and an insulating layer 23 provided on the main structure. The electrical connection between the upper and lower layers in the form of a spiral winding can be achieved by providing the connection plate 22 with different opening positions of the insulating layer 23. The connecting plate 22 is in a T-shaped structure, the connecting plate 22 comprises a middle part 201, and a first sub-end 221 and a second sub-end 222 positioned at two ends of the middle part 201, wherein the upper surface of the middle part 201 is provided with a first insulator 202, and the lower surface of the middle part 201 is made of metal, wherein the first insulator 202 is used for insulating with the middle part of the upper layer; the upper surface of the first sub-end 221 is provided with a second insulator 203, and the lower surface of the first sub-end 221 is made of metal, wherein the second insulator 203 is used for insulating the first end 211 of the upper layer; the lower surface of the second sub-end 222 is provided with a third insulator 204, the upper surface of the first sub-end 221 is made of metal, and the third insulator 204 is used for insulating from the first end 211 of the lower layer.

In this embodiment of the present application, the main structure of the connection board 22 is provided with an opening for matching with the frame board 21 and an opening for setting an insulator, and by setting a step-type height, the connection board 22 and the frame board 21 form a plane with the same height after being fixed, and when specifically set, the connection board and the frame board 21 can be modulated according to the height of the frame board 21 and the height of the insulator.

In this embodiment, the connection plate 22 can be used to realize the arrangement from the upper layer at one end to the lower layer at the other end, so as to realize the spiral winding connection mode of this application. In addition, in the embodiment of the application, the conductive area can be increased, the resistance can be reduced, the voltage drop on the exciting line plate 2 can be improved, and the magnet precision can be improved. In order to further improve the stability of the connection between the excitation wire plates 2, in the embodiment of the present application, when the insulating layer 23 is made of a material, double-sided insulating glue may be selected for fixing.

In addition, the exciting wire plate 2 is further provided with a plurality of insulating fixing rods 24, the insulating fixing rods 24 comprise stainless steel screws 241 and insulating sleeves 242 sleeved on the outer layers of the stainless steel screws 241, as shown in fig. 8, the insulating sleeves 242 are provided with insulating bosses 243 at one ends thereof, the insulating bosses 243 are used for being pressed on the surface of the exciting wire plate 2, the other ends of the insulating sleeves 242 are provided with insulating caps 244, the insulating caps 244 and the insulating sleeves 242 are in a separated structure, and the insulating bosses 243 and the insulating caps 244 are used for insulating nuts matched with the stainless steel screws 241. For example, the insulating sleeve 242 and the insulating cap 244 may be fabricated from G10 material (a fiberglass and resin laminate composite).

It should be noted that, in the embodiment of the present application, the number of the insulating fixing rods 24 is not limited, in different embodiments, different numbers and different sizes of insulating fixing rods 24 may be provided according to the size of the excitation wire board 2, and in the embodiment of the present application, the insulating fixing rods 24 include multiple groups of long rods and multiple groups of different short rods, where the short rods are used for the fixed connection between the frame board 21 and the connecting board 22, and the long rods may be used for fixing with the iron core 1 in addition to the fixed connection of the excitation wire board 2 itself.

The present application provides an L-shaped fixing block 25 for fixing the exciting wire plate 2 to the iron core 1, as shown in fig. 15, the insulating fixing rod 24 extending out of the surface of the plate-shaped electrode 20 at one end near the outer frame 11; the insulation fixing rod 24 is fixedly arranged on the outer frame 11 through an L-shaped fixing block 25, wherein the L-shaped fixing block 25 comprises two connecting blocks 251 which are vertically arranged, one connecting block 251 is fixedly connected with the outer frame 11, and the other connecting block 252 is connected with the insulation fixing rod 24.

In this application embodiment, fixedly be provided with at least one excitation wire board 2 on every magnetic pole 10 of iron core 1 respectively, cup joint the setting between the different excitation wire boards 2 to form the winding structure of different turns on every magnetic pole 10, the number of turns multiplied by the electric current decides magnetic induction intensity, in this application embodiment, does not limit to the number of excitation wire boards 2, when different application scenes, selects according to the demand. In the embodiment of the application, the excitation wire plates 2 are sleeved outside the excitation wire plates 2 layer by layer. When the magnetic pole 10 is arranged, the magnetic pole 10 can be realized by forming different exciting wire plates 2 in different sizes, and the sleeving manner between the different exciting wire plates 2 can be similar to the sleeving manner of the exciting wire plates 2 on the magnetic pole 10 described in the application, which is not described in detail herein.

In the embodiment of the present application, the excitation wire board 2 is provided with an in-electric terminal 261 and an out-electric terminal 262 for wiring. The power in terminal 261 and the power out terminal 262 are disposed on the same end face of the exciting wire plate 2, for example, the power in terminal 261 is disposed at the upper left corner of the end face of the exciting wire plate 2, and the power out terminal 262 is disposed at the lower right corner or lower left corner of the end face. By providing the power in terminal 261 and the power out terminal 262 on the same end face, series connection power on the iron core 1 can be facilitated. In other embodiments, it is also possible to use two exciting line plates 2 that need to be arranged in series, with the power in terminal 261 and the power out terminal 262 located at adjacent positions. Of course, in some cases where the space is sufficient, the running line may be provided in other manners, which are not limited in this application.

The first excitation wire plate 2 on the first magnetic pole A and the second excitation wire plate 2 on the second magnetic pole B are arranged in series; the third excitation wire plate 2 on the third magnetic pole C and the fourth excitation wire plate 2 on the fourth magnetic pole D are arranged in series; the power-out terminal 262 of the first excitation wire plate 2 and the power-in terminal 261 of the second excitation wire plate 2, and the power-out terminal 262 of the third excitation wire plate 2 and the power-in terminal 261 of the fourth excitation wire plate 2 are electrically connected by a corner plate 27, and the corner plate 27 has an L-shaped structure.

For example, the first excitation wire plate 2 is wound in the same manner as the third excitation wire plate 2, and the second excitation wire plate 2 is wound in the same manner as the fourth excitation wire plate 2. If the current flow of the first excitation wire plate 2 is counter-clockwise (looking down from the top surface of the wire plate), the current flow of the second excitation wire plate 2 should be clockwise. And determining the direction of the magnetic field after the line plates are electrified according to the right-hand rule, wherein the upper N of the first excitation line plate 2 is lower than the lower S of the first excitation line plate, and the upper S of the second excitation line plate 2 is lower than the lower N of the second excitation line plate 2, so that the direction requirement of the magnetic field of the magnet is met.

By arranging the power-in terminal 261 and the power-out terminal 262 in the diagonal positions, the principle of the proximity of the series connection of the excitation wire plates 2 can be conveniently realized, for example, the power-in terminal 261 of a is arranged at the upper right corner, the power-out terminal 262 of a is arranged at the lower left corner, the power-in terminal 261 of B is arranged at the lower right corner, and the power-out terminal 262 of B is arranged at the upper left corner, so that the wiring can be conveniently performed. In use, the L-shaped gusset 27, the power in terminal 261 and the power out terminal 262 may be formed of an oxygen free copper material.

It should be noted that, in the embodiment of the present application, since the lower surface of the second sub-end 222 of the connection board 22 is the third insulator, when the power in terminal 261 or the power out terminal 262 is located at this position, the insulating layer 23 at the wiring position may be removed, and of course, the second end 212 of the frame board 21 may also be wired by adding a layer of frame board 21, which is not limited in this application. Of course, in other embodiments, other wiring manners may be further implemented, on the basis of the present application, by removing the insulating layer 23 or adding a metal layer, and any wiring manner is within the protection scope of the present application.

In the embodiment of the present application, as shown in fig. 16 to 17, the insulation between the different plate-like electrodes 20 is achieved by the insulation layer 23, and further includes insulation from the surrounding external structure, including the outer layer of the exciting wire plate 2 or the cooling device 3, and the inner core 1. For example, an insulating plate 281 is added to the surface of the core 1, or an insulating material is added to the outer surface of the exciting wire plate 2. When in setting, the material can be formed by adopting G10 material processing.

In this embodiment, the surface of the excitation wire plate 2 is covered with an insulator, the insulator includes an insulating plate 281 and an insulating film 282, and the insulating film 282 is disposed on the outer surface of the excitation wire plate 2, which is in contact with the cooling device 3. In the embodiment of the present application, since the G10 material is seriously insulated, the outer surface where the excitation wire plate 2 is disposed in contact with the cooling device 3 is insulated by an insulating film 282, for example, by half-laminating a polyimide tape and flat laminating a glass ribbon.

Cooling device 3

As shown in fig. 18-19, in the embodiment of the present application, the cooling device 3 is disposed around one of the exciting wire boards 2, the cooling device 3 includes a plurality of detachably connected cooling boxes 30, and the cooling boxes 30 are provided with circulation pipes 40 around the exciting wire boards 2.

The cooling device 3 has the same structure as the excitation wire plate 2, and the cooling device 3 is sleeved on the outer surface of the excitation wire plate 2 and is used for cooling the excitation wire plate 2. Likewise, the cooling device 3 is formed into a closed loop structure by a plurality of cooling cartridges 30. In the embodiment of the present application, the number of the cooling boxes 30 on the cooling device 3 is not limited, and in the rectangular closed structure corresponding to the excitation wire board 2, the cooling device 3 in the present application also adopts a rectangular structure, and in the embodiment of the present application, the open positions of the plurality of cooling boxes 30 in the rectangular closed structure are not limited, and in the embodiment of the present application, for example, the end surfaces of the cooling boxes 30 are open positions with one end of the rectangular closed structure as a boundary, as shown in fig. 19; alternatively, a broken position as a boundary in the middle of the rectangular closed structure as shown in fig. 18; of course, in other embodiments, it may be in any position of the rectangular enclosure.

In the embodiment of the present application, the connection manner of any other connection position may be referred to as the connection manner of the present application, where the connection position is exemplified by the connection position with the middle position of the rectangular closed structure as the boundary. This application is not set forth in any way.

As shown in fig. 20, the cooling boxes 30 are in a U-shaped structure, each cooling device 3 is in butt joint with two symmetrically arranged U-shaped cooling boxes 30 to form a closed rectangular structure, and the two cooling boxes 30 are fixedly connected through a locking member 42; the cooling box 30 is further provided with a fixing member 43 fixedly connected with the outer frame 11.

In the U-shaped cooling box 30, the circulation pipe 40 includes a plurality of layers of heat pipes 41, the heat pipes 41 are connected to the upper layer of heat pipes 41 at one end and to the lower layer of heat pipes 41 at the other end, and a pipe joint 44 filled with cooling water is provided on the circulation pipe 40, as shown in fig. 21. In this embodiment, because the two ends of the circulation pipe 40 are non-closed structures, the circulation pipe 40 forms a spiral structure inside, so that water flow can flow continuously in the cooling box 30 without generating a dead water phenomenon, and the water flow area is increased to the maximum extent, and the water inlet and outlet are formed in the outer side of the cooling box 30, so that heat emitted by the excitation wire plate 2 can be taken away rapidly through the inlet and outlet of flowing water. To facilitate access to the cooling water, a pipe joint 44 may be provided on the end face of the cooling box 30.

During processing and manufacturing, the heat pipes 41 can be spliced to form the heat pipe, and the on-off control of different heat pipes 41 can be realized by arranging plugs 45 on the through pipes which are connected horizontally and vertically. In the embodiment of the present application, the pipes may be disposed in the cooling box 30, and the implementation of the heat pipe 41 is not limited by the embodiment of the present application, where the solid pipes may be disposed in the outer frame 11 of the cooling box 30.

Specifically, as shown in fig. 1, in order to facilitate the installation of the cooling boxes 30 on the excitation wire board 2, the two cooling boxes 30 are connected to the surface of the excitation wire board 2 in a sleeved mode, the 2U-shaped structures are fixedly connected together through the locking member 42, and meanwhile, the cooling boxes 30 are fixed on the outer frame 11 of the iron core 1 through the fixing member 43 and the fixing screw rod matched with the fixing member 43. The technical solution of the present application is not limited to this, and the material of the cooling box 30 may be selected as an insulating material, and the exciting wire plate 2 may be coated with the insulating material, so that the insulating effect may be achieved while cooling, and other means, such as adhesion, welding, and the like, may be adopted during the mounting.

The result of Hall magnetic field measurement shows that under 78A working current, the magnetic field gradient exceeds 90T/m, and the magnetic field gradient and the magnetic length meet the requirements. The coil installation difficulty of the high-gradient small-aperture whole iron core magnet is solved by adopting the solid copper plate manufacturing technology in the synchronous radiation light source magnet technology; the indirect water cooling technology outside the wire board is used, the power is low, and the problem that the wire board is difficult to be cooled by water after heating without a mesoporous water cooling copper plate is solved.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular implementations only and is not intended to be limiting of the invention. Terms such as "disposed" or the like as used herein may refer to either one element being directly attached to another element or one element being attached to another element through an intermediate member. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features unless the features are not applicable or otherwise indicated in the other embodiment.

The present invention has been described in terms of the above embodiments, but it should be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the embodiments described. Those skilled in the art will appreciate that many variations and modifications are possible in light of the teachings of the invention, which variations and modifications are within the scope of the invention as claimed.

Claims

1. A multipole electromagnet, comprising:

the cooling devices are arranged on one excitation wire plate in a surrounding mode, each cooling device comprises a plurality of cooling boxes which are detachably connected, and circulating pipelines surrounding the excitation wire plate are arranged on the cooling boxes;

the frame plate comprises a first end and a second end, and the connecting plate comprises a first sub-end corresponding to the first end and a second sub-end corresponding to the second end;

the frame plates are arranged in an insulating way;

the first sub-end is arranged in an insulating way at a contact position with the first end positioned on the same layer, and the second sub-end is arranged in a conductive way at the contact position with the second end positioned on the same layer;

the first sub-end is electrically conductive with the first end of the lower layer at a contact location, and the second sub-end is insulated from the second end of the lower layer at a contact location.

2. Multipole electromagnet according to claim 1, characterized in that the frame plates arranged adjacently two above each other are electrically connected by the connection plates; one end of the connecting plate is electrically connected with the frame plate on the same layer, and the other end of the connecting plate is electrically connected with the frame plate on the lower layer.

3. The multipole electromagnet of claim 1, wherein the excitation wire plate is provided with a plurality of insulating fixing rods extending out of the surface of the plate-like electrode at one end near the outer frame;

4. The multipole electromagnet of claim 1, wherein the number of cores is plural, the plural cores are fixedly connected by connecting rods, the positions of the respective poles on the plural cores correspond, and the same pole on the plural cores is surrounded by one exciting line plate.

5. The multipole electromagnet of claim 1, wherein the core comprises a first pole, a second pole, a third pole, and a fourth pole, the adjacent first pole and second pole being of opposite polarity, the first pole and third pole being of the same polarity, and the second pole and fourth pole being of the same polarity.

6. The multipole electromagnet of claim 5, wherein a first excitation wire plate on the first magnet is disposed in series with a second excitation wire plate on the second magnet; the third excitation line plate on the third magnetic pole is connected with the fourth excitation line plate on the fourth magnetic pole in series; the power-out terminal of the first excitation wire plate is electrically connected with the power-in terminal of the second excitation wire plate, and the power-out terminal of the third excitation wire plate is electrically connected with the power-in terminal of the fourth excitation wire plate through a corner plate, and the corner plate is of an L-shaped structure.

7. The multipole electromagnet of claim 1, wherein the field wire plate is coated with an insulator comprising an insulating plate and an insulating film disposed on an outer surface of the field wire plate in contact with the cooling device.

8. The multipole electromagnet according to claim 1, wherein the cooling boxes are of a U-shaped structure, the number of the cooling boxes is two, and the two cooling boxes are fixedly connected through a locking piece; and a fixing piece fixedly connected with the outer frame is further arranged on the cooling box.

9. The multipole electromagnet of claim 1, wherein the circulation duct comprises a multi-layered arrangement of heat pipes connected at one end to a previous layer of heat pipes and at the other end to a next layer of heat pipes.