阅读说明：本技术 磁共振成像系统的磁体、制造方法及磁共振成像系统 (Magnet, manufacturing method and the magnetic resonance imaging system of magnetic resonance imaging system ) 是由 张布卿 薛廷强 于 2018-05-23 设计创作，主要内容包括：本发明提供了一种磁共振成像系统的磁体,包括数个间隔件(10)和数个超导线圈(20)。间隔件为圆环形且数个间隔件沿轴向同轴地排布,各间隔件内镶嵌有一根冷却管(12),且冷却管的两端分别从间隔件的径向外表面伸出。超导线圈沿间隔件的轴向与间隔件同轴地交替设置,各超导线圈浸渍固定于相邻的两个间隔件之间。本发明提供的磁共振成像系统的磁体,能够有效的降低生产成本和因冷却造成的使用成本。本发明还提供了上述磁体的制造方法及包括上述磁体的磁共振成像系统。(The present invention provides a kind of magnets of magnetic resonance imaging system, including several spacers (10) and several superconducting coils (20).Spacer is circular ring shape and several spacers are coaxially arranged along axial direction, a cooling tube (12) is inlaid in each spacer, and the both ends of cooling tube are stretched out from the radially-outer surface of spacer respectively.Superconducting coil is coaxially arranged alternately along the axial direction of spacer with spacer, and each superconducting coil dipping is fixed between two adjacent spacers.The magnet of magnetic resonance imaging system provided by the invention can effectively reduce production cost and because of use cost caused by cooling.The present invention also provides the manufacturing method of above-mentioned magnet and the magnetic resonance imaging system including above-mentioned magnet.)

1. the magnet of magnetic resonance imaging system, comprising:

Several spacers (10), the spacer (10) is circular ring shape and several spacers (10) are coaxially arranged along axial direction Cloth, each spacer (10) is interior to be inlaid at least one cooling tube (12), and the both ends of the cooling tube (12) are respectively from institute The radially-outer surface for stating spacer (10) stretches out；

Several superconducting coils (20), the superconducting coil (20) are same along the axial direction of the spacer (10) and the spacer (10) It is arranged alternately to axis, each superconducting coil (20) is fixed between the spacer (10) of adjacent two.

2. magnet as described in claim 1, each spacer (10) further includes the pedestal (14) of a circular ring shape, described cold But pipe (12) is set to the outer surface of the pedestal (14).

3. magnet as described in claim 1, the spacer (10) is by including that shape is perfused in the thermally conductive composite material for promoting material At.

4. magnet as described in claim 1, the cooling tube (12) is arranged along the axis spiral of the spacer (10).

5. magnet as described in claim 1, radial direction of the both ends of the cooling tube (12) respectively along the spacer (10) is right It is set to the two sides of the spacer (10) with claiming.

6. magnet as described in claim 1, the cooling tube (12) is grapheme tube.

7. magnetic resonance imaging system, including such as magnet described in any one of claims 1 to 6.

8. the manufacturing method of the magnet of magnetic resonance imaging system, including the following steps:

The spacer (10) for the circular ring shape that several inside are inlaid with cooling tube (12), and the two of cooling tube (12) are formed by being perfused End is stretched out along the radially-outer surface of the spacer (10) respectively；

Several spacers (10) are arranged and are fixed along its axial coaxially interval；

Several superconducting coils coaxial with the spacer (10) are wound in gap between several spacers (10) (20)；

The superconducting coil (20) dipping is fixed between the spacer (10) of adjacent two using resin.

9. the manufacturing method of magnet as claimed in claim 8, wherein being poured into the cooling tube (12) of the spacer (10) It is several.

10. the manufacturing method of magnet as claimed in claim 9, wherein step: several inside are formed by perfusion and are inlaid with cooling The spacer (10) of the circular ring shape of (12) is managed, and the both ends of cooling tube (12) are respectively along the radially-outer surface of the spacer (10) Stretching includes:

The cooling tube (12) is set to the radially-outer surface of the pedestal (14) of a circular ring shape；

The cooling tube (12) and the pedestal (14) are integrally perfused to formation and the pedestal (14) coaxially institute by mold State spacer (10).

11. the manufacturing method of magnet as claimed in claim 10, wherein by the cooling tube (12) of spiral and the pedestal (14) it is coaxially disposed within the radially-outer surface of the pedestal (14).

12. the manufacturing method of magnet as claimed in claim 10, wherein by the both ends of the cooling tube (12) respectively along described The two sides for being radially symmetrically set to the pedestal (14) of pedestal (14).

13. the manufacturing method of magnet as claimed in claim 10, wherein by including the thermally conductive composite material for promoting material by institute State the radially-outer surface that the pedestal (14) are fixed in cooling tube (12) perfusion.

14. the manufacturing method of magnet as claimed in claim 8, wherein the cooling tube (12) selects grapheme tube.

Technical field

The present invention relates to a kind of magnet, especially a kind of magnet for magnetic resonance imaging system.The invention further relates to upper State the manufacturing method of magnet and the magnetic resonance imaging system including above-mentioned magnet.

Background technique

In existing magnetic resonance imaging system, the superconducting coil for forming superconducting magnet is usually supported by metal framework, then is soaked Enter into the container filled with liquid helium cooling use.Due to the processing cost and raw material of the metal framework of support superconducting coil Higher cost causes the production cost of magnetic resonance imaging system higher.Meanwhile belonging to rare money for cooling liquid helium The higher operating costs of magnetic resonance imaging system is caused in source.

Summary of the invention

The object of the present invention is to provide a kind of magnet of magnetic resonance imaging system, can effectively reduce production cost and because Use cost caused by cooling.

It is a further object of the present invention to provide a kind of magnetic resonance imaging systems comprising magnet can effectively reduce life Produce cost and because of use cost caused by cooling.

Another object of the present invention is to provide a kind of processing method of magnet, is conducive to the magnetic of above-mentioned magnetic resonance imaging system The processing and manufacturing of body.

The magnet of magnetic resonance imaging system of the invention, including several spacers and several superconducting coils.Spacer is circle Annular and several spacers are coaxially arranged along axial direction, and at least one cooling tube, and the two of cooling tube are inlaid in each spacer End is stretched out from the radially-outer surface of spacer respectively.Superconducting coil is coaxially arranged alternately along the axial direction of spacer with spacer, Each superconducting coil is fixed between two adjacent spacers.

Superconducting coil compartment of terrain is fixed between spacer, In by the magnet of magnetic resonance imaging system provided by the invention Entire magnet is supported by spacer during magnet use, saves a large amount of material cost and processing cost.At the same time, Spacer inside is inlaid with cooling tube, and cooling medium can pass through circulating cooling spacer and superconducting coil in cooling tube.It is cooling Pipe is embedded in inside spacer and is more easily assembled compared to the surface for being installed on spacer, and can increase the contact with spacer Area improves heat exchanger effectiveness, use cost caused by saving because of cooling.

In another exemplary embodiment of the magnet of magnetic resonance imaging system, each spacer further includes an annulus The pedestal of shape, cooling tube are set to the outer surface of pedestal.Pedestal is played a supporting role, and the stabilized structure of spacer is made.

In another exemplary embodiment of the magnet of magnetic resonance imaging system, spacer is by including thermally conductive promotion material The composite material of material is perfused to be formed, and keeps the structure of spacer more stable, heat transfer property is more preferable.

In another exemplary embodiment of the magnet of magnetic resonance imaging system, axis spiral shell of the cooling tube along spacer Rotation setting, makes cooling tube contacting with spacer more evenly, improves cooling efficiency.

In another exemplary embodiment of the magnet of magnetic resonance imaging system, the both ends of cooling tube are respectively along interval The two sides for being radially symmetrically set to spacer of part facilitate the connection of the cooling tube in cooling device and each spacer to install, And be conducive to abundant circulation of the cooling medium in each cooling tube.

In another exemplary embodiment of the magnet of magnetic resonance imaging system, cooling tube is grapheme tube.It utilizes The good thermal conductivity of graphene is to be turned up the cooling efficiency of cooling tube.

The present invention also provides a kind of magnetic resonance imaging systems, including above-mentioned magnet.

The present invention also provides a kind of processing methods of magnet, including the following steps:

The spacer for the circular ring shape that several inside are inlaid with cooling tube, and the both ends of cooling tube edge respectively are formed by being perfused The radially-outer surface of spacer stretches out.

Several spacers are arranged and are fixed along its axial coaxially interval.

Several superconducting coils coaxial with spacer are wound in gap between several spacers.

Superconducting coil dipping is fixed between two adjacent spacers using resin.

In another exemplary embodiment of the processing method of magnet, it is several for being poured into the cooling tube of spacer. Contact area by improving cooling tube and spacer reaches raising cooling efficiency

In another exemplary embodiment of the processing method of magnet, several internal edges step: are formed by perfusion Embedded with cooling tube, and the both ends of cooling tube include: along the radially-outer surface stretching of spacer respectively

Cooling tube is set to the radially-outer surface of the pedestal of several circular ring shapes.

Formation and pedestal coaxially spacer is integrally perfused in cooling tube and pedestal by mold.

In another exemplary embodiment of the processing method of magnet, the cooling tube of spiral is coaxially set with pedestal It is placed in the radially-outer surface of pedestal.Make cooling tube contacting with spacer more evenly, improves cooling efficiency.

In another exemplary embodiment of the processing method of magnet, by the both ends of cooling tube respectively along the diameter of pedestal To the two sides for being symmetrically disposed on pedestal.Facilitate the connection of the cooling tube in cooling device and each spacer to install, and is conducive to Abundant circulation of the cooling medium in each cooling tube.

In another exemplary embodiment of the processing method of magnet, by the composite wood for including thermally conductive promotion material The radially-outer surface of pedestal is fixed in cooling tube perfusion by material, keeps the structure of spacer more stable, heat transfer property is more preferable.

In another exemplary embodiment of the processing method of magnet, cooling tube selects grapheme tube, utilizes graphite The good thermal conductivity of alkene is to be turned up the cooling efficiency of cooling tube.

Hereafter by clearly understandable mode, preferred embodiment is described with reference to the drawings, to the magnet of magnetic resonance imaging system, Above-mentioned characteristic, technical characteristic, advantage and its implementation of manufacturing method and magnetic resonance imaging system are further described.

Detailed description of the invention

Only illustratively description and explain the present invention for the following drawings, not delimit the scope of the invention.

Fig. 1 is the sectional structure signal for illustrating a kind of exemplary embodiment of the magnet of magnetic resonance imaging system Figure.

Fig. 2 is the structural schematic diagram for the spacer for illustrating a kind of exemplary embodiment of magnet.

Fig. 3 is the schematic cross-sectional view for the spacer for illustrating a kind of exemplary embodiment of magnet.

Fig. 4 is the flow diagram for illustrating the processing method of magnet.

Fig. 5 is another flow diagram for illustrating the processing method of magnet.

Label declaration

10 spacers

12 cooling tubes

14 pedestals

20 superconducting coils.

Specific embodiment

In order to which the technical features, objects and effects of invention are more clearly understood, the Detailed description of the invention present invention is now compareed Specific embodiment, identical label indicates that structure is identical or structure is similar but the identical component of function in the various figures.

Herein, " schematic " expression " serving as examplea, instances, or illustrations " should not will be described herein as " showing Any diagram, the embodiment of meaning property " are construed to technical solution that is a kind of preferred or more having advantages.

Fig. 1 is the sectional structure signal for illustrating a kind of exemplary embodiment of the magnet of magnetic resonance imaging system Figure.Referring to Fig.1, magnet includes several spacers 10 and several superconducting coils 20.Spacer 10 is for circular ring shape and along axial coaxial Ground is arranged, and is inlaid with cooling tube 12 in each spacer 10, and the both ends of cooling tube 12 are respectively along the radially-outer surface of spacer 10 Spacer 10 is stretched out, for connecting the cooling device of magnetic resonance imaging system, is recycled for cooling medium in the inside of spacer 10. Superconducting coil 20 is coaxially arranged alternately along the axial direction of spacer 10 with spacer 10, each superconducting coil 20 by resin or other Polymer composite dipping is fixed between two adjacent spacers 10, and superconduction can be improved using the fixing means of dipping The stability of structure after coil 20 and spacer 10 are fixed, while cost can be saved, in other exemplary embodiments, It can also be using other fixed forms.In exemplary embodiment, spacer 10 is by including the compound of thermally conductive promotion material Material is perfused to be formed, thermally conductive promotion material include silica, aluminium oxide, glass fibre and aluminium nitride etc. can promote it is thermally conductive One of material is a variety of, keeps the heat transfer property of spacer 10 more preferable, and structure is more stable.Cooling tube 12 uses graphene Pipe, the cooling efficiency of cooling tube 12 is turned up using the good thermal conductivity of graphene.Certainly it is not limited thereto, in other signals Property embodiment in, spacer 10 can also be perfused to be formed using other macromolecule polymeric materials, such as epoxy resin.Cooling tube 12 can also replace with copper pipe etc. according to demand.

The magnet of magnetic resonance imaging system provided by the invention, by 20 compartment of terrain of superconducting coil be fixed on spacer 10 it Between, entire magnet is supported during magnet use, is eliminated original metal framework for being used to support superconducting coil 20, is saved A large amount of material cost and processing cost.At the same time, cooling tube 12 is inlaid with inside spacer 10, cooling medium can pass through Circulating cooling spacer 10 and superconducting coil 20 in cooling tube 12.Cooling tube 12 is embedded in compare inside spacer 10 and be installed on The surface of spacer 10 is more easily assembled, and can increase the contact area with spacer 10, improves heat exchanger effectiveness, is saved Because of use cost caused by cooling.

In exemplary embodiment, referring to Fig.1, it is inlaid with several cooling tubes 12 in each spacer 10, can pass through The contact area for improving cooling tube 12 and spacer 10 achievees the purpose that improve cooling efficiency, certainly only includes a cooling tube 12 It is also possible.The both ends of cooling tube 12 are convenient respectively along the two sides for being radially symmetrically set to spacer 10 of spacer 10 The connection of cooling tube 12 in cooling device and each spacer 10 is installed, and is conducive to cooling medium filling in each cooling tube 12 Divide circulation.Certainly it is not limited thereto, in other exemplary embodiments, can also be set according to the actual conditions of cooling device Set the position at the both ends of cooling tube.

Fig. 2 is the structural schematic diagram for the spacer for illustrating a kind of exemplary embodiment of magnet.Referring to Fig. 2, In In exemplary embodiment, cooling tube 12 along spacer 10 axis spiral be arranged, make cooling tube 12 more evenly and spacer 10 contacts, to improve cooling efficiency.

Fig. 3 is the schematic cross-sectional view for the spacer for illustrating a kind of exemplary embodiment of magnet.Referring to figure 3, in exemplary embodiment, each spacer 10 further includes the pedestal 14 of a circular ring shape, and cooling tube 12 is set to and pedestal 14 outer surface, then spacer 10 is formed with 14 one perfusion of pedestal.Pedestal 14 is played a supporting role, and the structure of spacer 10 is made It is firm.

The present invention also provides a kind of magnetic resonance imaging systems, including above-mentioned magnet.

The present invention also provides a kind of processing methods of magnet, and referring to Fig. 4, processing method includes that step S10 passes through perfusion shape It is inlaid with the spacer 10 of the circular ring shape of cooling tube 12 at several inside, and guarantees the both ends of cooling tube 12 respectively along spacer 10 Radially-outer surface stretch out, in exemplary embodiment, be poured into spacer 10 cooling tube 12 be it is several, by improve it is cold But the contact area of pipe 12 and spacer 10 reaches raising cooling efficiency.S20 is by several spacers 10 between it is axial coaxially It is fixed every being arranged and being assembled by coil winding tool.S30 is wound and spacer 10 in the gap between several spacers 10 Coaxial several superconducting coils 20.The dipping of superconducting coil 20 is fixed between two adjacent spacers 10 by S40 using resin.

In exemplary embodiment, referring to Fig. 5, step S10 includes that cooling tube 12 is fixed on several annulus by step S11 The radially-outer surface of the pedestal 14 of shape, pedestal 14 are manufactured by composite material using conventional technique coiling or casting.Schematic In embodiment, cooling tube 12 selects grapheme tube, and the cooling effect of cooling tube 12 is turned up using the good thermal conductivity of graphene Rate.In other exemplary embodiments, cooling tube 12 can also replace with copper pipe etc. according to demand.Step S12 passes through mold Formation and pedestal 14 coaxially spacer 10 are perfused in cooling tube 12 and 14 one of pedestal.In step s 12 by including thermally conductive Promote the high molecular materials such as composite material or the epoxy resin of material that cooling tube 12 is perfused to the radial appearance for being fixed on pedestal 14 Face, it is thermally conductive promote material include silica, aluminium oxide, glass fibre and aluminium nitride etc. can promote in thermally conductive material one Kind is a variety of, keeps the structure of spacer 10 more stable, heat transfer property is more preferable.

In exemplary embodiment, the cooling tube of spiral 12 and pedestal 14 are coaxially disposed within pedestal in step S11 14 radially-outer surface makes the contacting with spacer 10 more evenly of cooling tube 12, improves cooling efficiency.By the both ends of cooling tube 12 Respectively along the two sides for being radially symmetrically set to pedestal 14 of pedestal 14.Facilitate the cooling tube in cooling device and each spacer 10 12 connection installation, and be conducive to abundant circulation of the cooling medium in each cooling tube 12.

Although not each embodiment only includes one it should be appreciated that this specification describes according to various embodiments A independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should will say As a whole, the technical solutions in the various embodiments may also be suitably combined for bright book, and forming those skilled in the art can be with The other embodiments of understanding.

One serial detailed description of those listed above only for possible embodiments of the invention specifically Protection scope bright, that they are not intended to limit the invention, it is all without departing from equivalent embodiments made by technical spirit of the present invention Or change, such as the combination, segmentation or repetition of feature, should all be included in the protection scope of the present invention.