Superconducting magnet device and medical imaging equipment

Abstract

The utility model relates to the technical field of medical instruments, and discloses a superconducting magnet device and medical imaging equipment. The superconducting magnet device comprises a first tank body and a second tank body. The first tank body comprises an inner cylinder wall and an outer cylinder wall. The outer cylinder wall comprises supporting parts located at the two ends and an inwards-concave occupying part which is located between the supporting parts and is inwards concave in the radial direction of the first tank body. An annular first containing cavity is defined by the inner cylinder wall and the outer cylinder wall. The second tank body is arranged on the outer side of the supporting part in the circumferential direction. An annular second accommodating cavity communicated with the first accommodating cavity is defined by the second tank body; the first containing cavity and the second containing cavity can be filled with cooling liquid. According to the superconducting magnet device, the structure is simple, the use amount of the cooling liquid can be reduced, and the cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, for example, to a superconducting magnet device and a medical imaging device. Background Art

[0002] At present, the main magnet is an important component in the Magnetic Resonance Imaging (MRI) system, which is used to generate a uniform magnetic field. A superconducting MRI system refers to an MRI device in which the main magnet is a superconducting magnet. A superconducting magnet generates a magnetic field by superconducting current in a superconducting coil. The superconducting coil of a superconducting magnet needs to be in a low temperature environment (for example, 4K) to maintain a superconducting state. Therefore, the superconducting coil needs to be immersed in a coolant, which requires a large amount of coolant, resulting in increased costs. Utility Model Content

[0003] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0004] The embodiments of the present disclosure provide a superconducting magnet device and a medical imaging device, which have a simple structure and can reduce the amount of coolant used, thereby reducing costs.

[0005] In some embodiments, a superconducting magnet device is provided, comprising: a first tank body, the first tank body comprising an inner tube wall and an outer tube wall, the outer tube wall comprising support parts located at both ends and a concave placeholder part located between the support parts and concave inwardly along the radial direction of the first tank body, the inner tube wall and the outer tube wall define an annular first accommodating chamber; a second tank body, arranged on the circumferential outer side of the support part, defining an annular second accommodating chamber connected to the first accommodating chamber; wherein both the first accommodating chamber and the second accommodating chamber can be filled with cooling liquid.

[0006] Optionally, a plurality of concave placeholders are provided, and the plurality of concave placeholders are arranged at intervals along the circumference of the outer tube wall; the outer tube wall also includes a plurality of connecting parts connecting the plurality of concave placeholders, and at least one connecting part defines an installation cavity connected to the first accommodating cavity.

[0007] Optionally, the cross section of the connecting portion gradually expands along the direction from the inner cylinder wall to the outer cylinder wall.

[0008] Optionally, the connecting portion is provided with an injection port for injecting coolant into the installation cavity and / or a connecting port for connecting a cold head.

[0009] Optionally, the superconducting magnet device further includes: a communicating pipe, one end of which is connected to the second tank body and communicated with the second accommodating cavity; the other end of the communicating pipe is connected to the connecting portion and communicated with the installation cavity.

[0010] Optionally, the superconducting magnet device also includes: a first winding skeleton, arranged on the inner cylinder wall and located in the first accommodating cavity; a first coil, arranged on the first winding skeleton; a second winding skeleton, arranged on the second tank body and located in the second accommodating cavity; a second coil, arranged on the second winding skeleton; and a superconducting joint, connecting the first coil and the second coil.

[0011] Optionally, the superconducting joint is arranged in the installation cavity.

[0012] Optionally, the superconducting magnet device further includes: a placeholder, disposed between the support portion and the first winding frame.

[0013] Optionally, the placeholder is connected to the support portion; the distance between the surface of the placeholder close to the inner cylinder wall and the first winding skeleton is equal to the distance between the surface of the concave placeholder close to the inner cylinder wall and the first winding skeleton.

[0014] In some embodiments, a medical imaging device is also provided, comprising: a superconducting magnet device as in any of the previous embodiments.

[0015] The superconducting magnet device and medical imaging equipment provided by the embodiments of the present disclosure can achieve the following technical effects:

[0016] The superconducting magnet device provided by the embodiment of the present disclosure comprises a first tank body including an inner tube wall and an outer tube wall, wherein the inner tube wall and the outer tube wall define an annular first accommodation chamber, and the first accommodation chamber can be filled with cooling liquid. The outer tube wall comprises a support portion located at both ends and a concave place-occupying portion located between the support portions and concave in the radial direction of the first tank body, that is, for the outer tube wall, the support portion is located at both ends, the concave place-occupying portion is located between the support portions at both ends, and the concave place-occupying portion is concave in the radial direction of the first tank body. The support portion is used to install the second tank body. The concave place-occupying portion is concave in the radial direction of the first tank body, which can reduce the internal space of the first accommodation chamber, that is, reduce the volume of the first accommodation chamber, and then reduce the amount of cooling liquid filled in the first accommodation chamber, thereby reducing the cost. The second tank body is arranged on the circumferential outer side of the support portion, and the second tank body defines an annular second accommodation chamber connected to the first accommodation chamber, so that the cooling liquid in the first accommodation chamber can enter the second accommodation chamber, so that both the first accommodation chamber and the second accommodation chamber can be filled with cooling liquid.

[0017] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0019] Figure 1 is a schematic diagram of the three-dimensional structure of a superconducting magnet device provided in an embodiment of the present disclosure;

[0020] Figure 2 yes Figure 1 A schematic diagram of the main structure of a superconducting magnet device provided in the illustrated embodiment;

[0021] Figure 3 yes Figure 2 AA cross-sectional view of ;

[0022] Figure 4 yes Figure 3 An enlarged schematic diagram of point B;

[0023] Figure 5 yes Figure 3 An enlarged schematic diagram of point C;

[0024] Figure 6 yes Figure 1 A schematic diagram of the top view of the superconducting magnet device provided in the illustrated embodiment;

[0025] Figure 7 yes Figure 6 DD cross-sectional diagram.

[0026] Reference numerals:

[0027] 1: Superconducting magnet device;

[0028] 100: first tank body; 101: inner tube wall; 102: outer tube wall; 1021: support portion; 1022: concave place-taking portion; 103: first accommodating cavity; 104: connecting portion; 1041: upper connecting portion; 1042: lower connecting portion; 105: injection port; 106: connecting port; 107: cavity; 108: installation cavity;

[0029] 200: second tank body; 201: second containing chamber;

[0030] 300: placeholder;

[0031] 400: first winding frame;

[0032] 500: first coil;

[0033] 600: second winding frame;

[0034] 700: second coil;

[0035] 800: Superconducting joint;

[0036] 900: Connecting pipes. DETAILED DESCRIPTION

[0037] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0038] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0039] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0040] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0041] Unless otherwise stated, the term "plurality" means two or more.

[0042] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0043] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0044] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0045] Combination Figures 1 to 7 As shown, an embodiment of the present disclosure provides a superconducting magnet device 1. The superconducting magnet device 1 includes a first tank body 100 and a second tank body 200. The first tank body 100 includes an inner cylinder wall 101 and an outer cylinder wall 102. The outer cylinder wall 102 includes support portions 1021 located at both ends and a concave placeholder portion 1022 located between the support portions 1021 and concave in the radial direction of the first tank body 100. The inner cylinder wall 101 and the outer cylinder wall 102 define an annular first accommodating chamber 103. The second tank body 200 is arranged on the circumferential outer side of the support portion 1021. The second tank body 200 defines an annular second accommodating chamber 201 that is connected to the first accommodating chamber 103. Wherein, both the first accommodating chamber 103 and the second accommodating chamber 201 can be filled with cooling liquid.

[0046] In this embodiment, the first tank body 100 includes an inner cylinder wall 101 and an outer cylinder wall 102 , and the inner cylinder wall 101 and the outer cylinder wall 102 define an annular first accommodating chamber 103 , so that the first accommodating chamber 103 can be filled with coolant.

[0047] In this embodiment, combined with Figure 1 , Figure 3 and Figure 6 As shown, the outer cylinder wall 102 includes support portions 1021 located at both ends and a concave placeholder 1022 located between the support portions 1021 and concave in the radial direction of the first tank body 100, that is, for the outer cylinder wall 102, the support portions 1021 are located at both ends, the concave placeholder 1022 is located between the support portions 1021 at both ends, and the concave placeholder 1022 is concave in the radial direction of the first tank body 100. The support portion 1021 can be used to install the second tank body 200. The concave placeholder 1022 can reduce the internal space of the first accommodating cavity 103, that is, reduce the volume of the first accommodating cavity 103, thereby reducing the amount of coolant filled in the first accommodating cavity 103, thereby reducing costs.

[0048] In this embodiment, the second tank body 200 is arranged on the outer side of the circumference of the support portion 1021 to realize the installation of the second tank body 200. The second tank body 200 defines an annular second accommodating chamber 201 that is connected to the first accommodating chamber 103, so that the first accommodating chamber 103 is connected to the second accommodating chamber 201, so that the coolant in the first accommodating chamber 103 can enter the second accommodating chamber 201, so that the first accommodating chamber 103 and the second accommodating chamber 201 can be filled with coolant. The second tank body 200 may also include an outer cylinder wall and an inner cylinder wall, and the inner cylinder wall of the second tank body 200 is connected to the outer cylinder wall 102 of the first tank body 100. Of course, the second tank body 200 may also include only an outer cylinder wall, and the inner cylinder wall of the second tank body 200 is the outer cylinder wall 102 of the first tank body 100, that is, the outer cylinder wall 102 of the first tank body 100 is shared by the first tank body 100 and the second tank body 200.

[0049] It is understandable that the overall shape of the first tank body 100 is not limited. For example, the first tank body 100 is an overall cylindrical structure, a polygonal three-dimensional structure, etc.

[0050] Combination Figures 1 to 3 As shown, optionally, the inner cylinder wall 101 defines a cavity 107 for placing the object to be inspected.

[0051] Combination Figure 1 , Figure 3 and Figure 6 As shown, optionally, two support portions 1021 are provided. Along the axial direction of the first tank body 100, the two support portions 1021 are arranged at intervals, and the concave place-occupying portion 1022 is located between the two support portions 1021. In other words, for the outer cylinder wall 102, the two support portions 1021 are located at both ends, and the concave place-occupying portion 1022 is located between the two support portions 1021, so that the outer cylinder wall 102 can both support the second tank body 200 and reduce the volume of the first accommodating chamber 103.

[0052] Combination Figure 1 , Figure 3 , Figure 6 and Figure 7 As shown, optionally, two second tank bodies 200 are provided. The two second tank bodies 200 are provided in a one-to-one correspondence with the two support portions 1021 .

[0053] It is understandable that the overall shape of the second tank body 200 is not limited, as long as it can define an annular second accommodating cavity 201. For example, the overall shape of the second tank body 200 is an annular three-dimensional structure.

[0054] It is understandable that the specific manner in which the second tank body 200 is disposed on the outer side of the support portion 1021 in the circumferential direction is not limited, for example, by welding.

[0055] It is understandable that there is no limitation on the specific selection of the coolant. For example, the coolant is liquid helium.

[0056] It is understandable that the superconducting magnet device 1 can be connected to other structures in practical applications. For example, when the superconducting magnet device 1 is applied to a superconducting magnetic resonance system, it can be connected to a normal temperature layer through a bellows. The normal temperature layer is a prior art.

[0057] Combination Figure 1 , Figure 6 and Figure 7 As shown, in some embodiments, a plurality of concave placeholders 1022 are provided, and the plurality of concave placeholders 1022 are arranged at intervals along the circumference of the outer cylinder wall 102. The outer cylinder wall 102 further includes a plurality of connecting portions 104 connecting the plurality of concave placeholders 1022. At least one connecting portion 104 defines a mounting cavity 108 communicating with the first accommodating cavity 103.

[0058] In this embodiment, a plurality of concave placeholders 1022 are provided, and the plurality of concave placeholders 1022 are arranged at intervals along the circumference of the outer tube wall 102, so as to reduce the internal space of the first accommodating cavity 103, thereby reducing the amount of coolant filled in the first accommodating cavity 103, thereby reducing the cost of using the coolant.

[0059] In this embodiment, the outer cylinder wall 102 further includes a plurality of connecting portions 104 connecting the plurality of inwardly concave place-occupying portions 1022 , and the plurality of inwardly concave place-occupying portions 1022 arranged at intervals are connected by the plurality of connecting portions 104 .

[0060] In this embodiment, at least one connecting portion 104 defines an installation cavity 108 that is in communication with the first accommodating cavity 103. It can be understood that the installation cavity 108 is defined between at least one connecting portion 104 and the inner cylinder wall 101, so that the coolant injected into the installation cavity 108 can flow into the first accommodating cavity 103. In addition, the installation cavity 108 can be used to install auxiliary components that enable the superconducting magnet device 1 to work normally, such as the superconducting joint 800.

[0061] Optionally, along the circumference of the outer cylinder wall 102, a plurality of connecting portions 104 are arranged at intervals. The plurality of connecting portions 104 and the plurality of concave placeholders 1022 are arranged alternately. Each connecting portion 104 can connect two adjacent concave placeholders 1022, and the plurality of connecting portions 104 can connect the plurality of concave placeholders 1022 arranged at intervals.

[0062] Optionally, the number of the connecting portions 104 is equal to the number of the concave placeholders 1022 , so that a plurality of connecting portions 104 can connect a plurality of concave placeholders 1022 .

[0063] Combination Figure 1 , Figure 6 and Figure 7 As shown, optionally, two concave placeholders 1022 are provided. The two concave placeholders 1022 are symmetrically located on both sides of the axis of the first tank body 100. Two connecting parts 104 are provided. The two connecting parts 104 are symmetrically located on the upper and lower sides of the axis of the first tank body 100.

[0064] In this embodiment, the two concave placeholders 1022 are symmetrically arranged on both sides of the first tank body 100. That is to say, in addition to the positions for installing the auxiliary components of the superconducting magnet device 1 (at the two installation cavities 108), the occupying effect of the two concave placeholders 1022 minimizes the volume inside the first accommodating cavity 103, thereby minimizing the amount of coolant filled in the first accommodating cavity 103.

[0065] Optionally, the outer cylinder wall 102 is an integrated structure, which has a simple structure and can achieve a space-occupying effect, thereby reducing the manufacturing and installation costs.

[0066] Combination Figure 1 and Figure 6 As shown, optionally, the length of the connecting portion 104 extends along the axial direction of the first tank body 100 .

[0067] In actual application, the superconducting joint 800 is arranged in the installation cavity 108 of the connecting portion 104. The length of the connecting portion 104 extends along the axial direction of the first tank 100, and the superconducting joint 800 can be arranged along the length direction of the installation cavity 108 defined by the connecting portion 104, so that the superconducting joint 800 is completely immersed in the coolant, thereby improving the superconducting effect.

[0068] It can be understood that the specific structure of the support portion 1021 is not limited, and the support portion 1021 can be realized to cooperate with the concave place-occupying portion 1022 and the connecting portion 104 to form the outer cylinder wall 102, and the inner cylinder wall 101 and the outer cylinder wall 102 define the first annular accommodation chamber 103. For example, the support portion 1021 is an annular member composed of a plate-like structure. One side of the annular member is integrally formed with the concave place-occupying portion 1022 and the connecting portion 104 to form the outer cylinder wall 102. The other side of the annular member is connected to the inner cylinder wall 101, so that the inner cylinder wall 101 and the outer cylinder wall 102 form the first tank body 100, and define the first annular accommodation chamber 103.

[0069] Combination Figure 6 and Figure 7 As shown, in some embodiments, the cross section of the connecting portion 104 gradually expands along the direction from the inner cylinder wall 101 to the outer cylinder wall 102 .

[0070] In this embodiment, combined with Figure 6 and Figure 7As shown, the cross section of the connecting portion 104 gradually expands along the direction from the inner cylinder wall 101 to the outer cylinder wall 102, that is, the distance between the wall surfaces on the left and right sides of the connecting portion 104 gradually increases along the direction from the inner cylinder wall 101 to the outer cylinder wall 102. The concave place-occupying portion 1022 forms a concave structure with a fan-shaped cross section, so that the concave place-occupying portion 1022 can occupy the space of the first accommodating cavity 103 to the maximum extent, thereby reducing the volume in the first accommodating cavity 103, and further realizing the maximum reduction of the amount of coolant filled in the first accommodating cavity 103, so as to reduce the cost.

[0071] Combination Figure 1 , Figure 6 and Figure 7 As shown, in some embodiments, the connecting portion 104 is provided with an injection port 105 for injecting coolant into the mounting cavity 108 .

[0072] In this embodiment, the injection port 105 is provided on the connecting portion 104 , and is used to inject the coolant into the installation cavity 108 , thereby injecting the coolant into the first accommodating cavity 103 .

[0073] In actual application, the cooling liquid can be injected into the installation cavity 108 by connecting the cooling liquid tube to the injection port 105 .

[0074] It is understandable that the type of the infusion tube is not limited. For example, the infusion tube adopts a corrugated tube.

[0075] Combination Figure 1 , Figure 6 and Figure 7 As shown, for ease of understanding, in the following description, the connection portion 104 located above the axis of the first tank body 100 is described as an upper connection portion 1041 , and the connection portion 104 located below the axis of the first tank body 100 is described as a lower connection portion 1042 .

[0076] Combination Figure 1 , Figure 6 and Figure 7 As shown, optionally, the injection port 105 is opened in the upper connecting portion 1041 to inject cooling liquid into the mounting cavity 108 of the upper connecting portion 1041 so that the cooling liquid can flow smoothly into the first accommodating cavity 103 .

[0077] Combination Figure 1 , Figure 6 and Figure 7 As shown, in some embodiments, the connecting portion 104 is provided with a connecting port 106 for connecting a cold head.

[0078] In this embodiment, the connection port 106 is provided in the connection portion 104, so that the connection portion 104 is connected to the cold head through the connection port 106. Thus, the coolant is kept at a low temperature through the cold head, for example, the temperature of the coolant is 4K (Kelvin), 4.2K, etc.

[0079] Combination Figure 1 , Figure 6 and Figure 7 As shown, optionally, the connection port 106 is opened on the upper connection portion 1041 .

[0080] Combination Figure 1 , Figure 6 and Figure 7 As shown, in some embodiments, the connecting portion 104 is provided with an injection port 105 for injecting coolant into the mounting cavity 108 and a connecting port 106 for connecting a cold head.

[0081] In this embodiment, the coolant is injected into the installation cavity 108 through the injection port 105. The connection with the cold head is achieved through the connection port 106.

[0082] Combination Figure 1 , Figure 6 and Figure 7 As shown, optionally, the injection port 105 and the connection port 106 are both opened in the upper connection portion 1041 .

[0083] Combination Figure 3 and Figure 4 As shown, in some embodiments, the superconducting magnet device 1 further includes a communication pipe 900. One end of the communication pipe 900 is connected to the second tank 200 and communicates with the second accommodating cavity 201. The other end of the communication pipe 900 is connected to the connecting portion 104 and communicates with the installation cavity 108.

[0084] In this embodiment, one end of the communication pipe 900 is connected to the second tank 200, and the communication pipe 900 is in communication with the second accommodating chamber 201. The other end of the communication pipe 900 is connected to the connecting portion 104, and the communication pipe 900 is in communication with the installation chamber 108. The installation chamber 108 and the second accommodating chamber 201 are connected through the communication pipe 900, and then the first accommodating chamber 103 and the second accommodating chamber 201 are connected, so that the coolant in the first accommodating chamber 103 can flow to the second accommodating chamber 201 through the communication pipe 900.

[0085] It is understandable that the type of the communication pipe 900 is not limited. For example, the communication pipe 900 is a bellows.

[0086] Combination Figure 3 and Figure 4As shown, optionally, one end of the communication pipe 900 is connected to the second tank 200, and the communication pipe 900 is communicated with the second accommodating chamber 201. The other end of the communication pipe 900 is connected to the lower connecting portion 1042, and the communication pipe 900 is communicated with the installation chamber 108 defined by the lower connecting portion 1042.

[0087] In this embodiment, the lower connecting portion 1042 is located at the bottom of the first tank body 100. One end of the connecting pipe 900 is connected to the second accommodating chamber 201, and the other end of the connecting pipe 900 is connected to the installation chamber 108 defined by the lower connecting portion 1042, so that the coolant in the first accommodating chamber 103 can smoothly flow into the second accommodating chamber 201 through the connecting pipe 900.

[0088] In this embodiment, the communication pipe 900 is in communication with the installation cavity 108 defined by the lower connection portion 1042. When the first accommodating cavity 103 is fully or partially filled with coolant, the coolant in the first accommodating cavity 103 can flow smoothly to the second accommodating cavity 201 through the communication pipe 900. The first accommodating cavity 103 and the second accommodating cavity 201 are both filled with coolant, so that the coil of the superconducting magnet device 1 is placed in a low temperature environment to maintain a superconducting state.

[0089] Combination Figure 3 and Figure 5 As shown, in some embodiments, the superconducting magnet device 1 further includes a first bobbin 400, a first coil 500, a second bobbin 600, a second coil 700 and a superconducting joint 800. The first bobbin 400 is disposed on the inner cylinder wall 101 and the first bobbin 400 is located in the first accommodating cavity 103. The first coil 500 is disposed on the first bobbin 400. The second bobbin 600 is disposed on the second tank body 200 and the second bobbin 600 is located in the second accommodating cavity 201. The second coil 700 is disposed on the second bobbin 600. The superconducting joint 800 connects the first coil 500 and the second coil 700.

[0090] In this embodiment, the first winding skeleton 400 is disposed on the inner cylinder wall 101 and the first winding skeleton 400 is located in the first accommodating cavity 103 , and the first coil 500 is disposed on the first winding skeleton 400 to generate a magnetic field.

[0091] In this embodiment, the second winding bobbin 600 is disposed on the second tank body 200 and the second winding bobbin 600 is located in the second accommodating cavity 201 , and the second coil 700 is disposed on the second winding bobbin 600 to improve the uniformity of the magnetic field.

[0092] In this embodiment, the superconducting joint 800 connects the first coil 500 and the second coil 700, that is, the first coil 500 and the second coil 700 are connected via the superconducting joint 800. The first coil 500 and the second coil 700 are connected into a loop via the superconducting joint 800, and the first coil 500 and the second coil 700 have a superconducting function via the cooling liquid disposed in the first accommodating cavity 103 and the second accommodating cavity 201.

[0093] For example, the superconducting magnet device 1 is applied to a superconducting magnetic resonance system. When the magnet is excited, the first coil 500 and the second coil 700 inside the magnet are charged through an external current lead, so that the first coil 500 and the second coil 700 are charged and a magnetic field is generated.

[0094] Combination Figure 3 As shown, optionally, the first winding skeleton 400 is arranged on a side of the inner cylinder wall 101 facing the outer cylinder wall 102 .

[0095] Combination Figure 3 As shown, optionally, a plurality of first coils 500 are provided. The plurality of first coils 500 are all provided on the first winding frame 400. The plurality of first coils 500 are sequentially arranged along the axial direction of the first tank body 100 to generate a magnetic field.

[0096] Combination Figure 3 As shown, optionally, each second tank body 200 is provided with a second winding bobbin 600, and the second winding bobbin 600 is located in the second accommodating cavity 201, and the second winding bobbin 600 is provided with a second coil 700 to improve the uniformity of the magnetic field.

[0097] In this embodiment, the first coil 500 can be understood as a main coil, and the second coil 700 can be understood as a shielding coil. A uniform magnetic field can be generated by the first coil 500 and the second coil 700.

[0098] In this embodiment, the superconducting magnet device 1 is a closed structure as a whole, and the first coil 500 and the second coil 700 can be fully or partially immersed in the coolant to achieve the superconducting function.

[0099] For example, the superconducting magnet device 1 is applied to a superconducting magnetic resonance system. By immersing all or part of the superconducting coils (the first coil 500 and the second coil 700) of the superconducting magnet device 1 in the coolant, the stable operation of the superconducting coils and the generation of a uniform magnetic field can be ensured, and the amount of coolant used can be reduced, thereby reducing costs.

[0100] Combination Figure 7 As shown, in some embodiments, the superconducting joint 800 is disposed in the mounting cavity 108 .

[0101] In this embodiment, the superconducting joint 800 is disposed in the installation cavity 108 so that the superconducting joint 800 can be immersed in the cooling liquid to improve the superconducting effect.

[0102] Combination Figure 7 As shown, optionally, the superconducting joint 800 is disposed in the installation cavity 108 defined by the lower connecting portion 1042. The superconducting joint 800 is disposed along the length direction of the installation cavity 108 defined by the lower connecting portion 1042. The superconducting joint 800 is completely immersed in the coolant, thereby improving the superconducting effect.

[0103] It can be understood that the superconducting joint 800 adopts the existing technology.

[0104] Combination Figure 3 As shown, in some embodiments, the superconducting magnet device 1 further includes a placeholder 300 . The placeholder 300 is disposed between the support portion 1021 and the first bobbin 400 .

[0105] In this embodiment, the space between the support portion 1021 and the first winding skeleton 400 is occupied by the placeholder 300 to reduce the amount of cooling liquid used.

[0106] Combination Figure 3 As shown, in some embodiments, the placeholder 300 is connected to the support portion 1021. The distance between the surface of the placeholder 300 close to the inner cylinder wall 101 and the first winding skeleton 400 is equal to the distance between the surface of the concave placeholder 1022 close to the inner cylinder wall 101 and the first winding skeleton 400.

[0107] In this embodiment, the placeholder 300 is connected to the support portion 1021 to fix the placeholder 300 to the support portion 1021, thereby maximizing the space occupied and allowing the first winding frame 400 and the first coil 500 to be immersed in the coolant.

[0108] In this embodiment, the distance between the surface of the placeholder 300 close to the inner cylinder wall 101 and the first winding skeleton 400 is equal to the distance between the surface of the concave placeholder 1022 close to the inner cylinder wall 101 and the first winding skeleton 400, so as to maximize the space occupied and reduce the amount of coolant used.

[0109] Combination Figure 3 and Figure 5 As shown, optionally, the placeholder 300 is an annular structure having an inner cavity.

[0110] In this embodiment, the placeholder 300 is an annular structure with an inner cavity, which can not only reduce the mass but also occupy the space of the first accommodating cavity 103 to the maximum extent, so as to reduce the amount of coolant used.

[0111] The embodiment of the present disclosure further provides a medical imaging device, which comprises a superconducting magnet device 1 as described in any of the above embodiments.

[0112] In this embodiment, the medical imaging device includes the superconducting magnet device 1 as in any of the previous embodiments, which can reduce the amount of cooling liquid used and reduce costs.

[0113] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A superconducting magnet device, characterized in that: include: The first tank body comprises an inner tube wall and an outer tube wall, wherein the outer tube wall comprises support portions at both ends and a concave place-occupying portion located between the support portions and concave in the radial direction of the first tank body, and the inner tube wall and the outer tube wall define an annular first accommodating cavity; A second tank body is disposed on the outer side of the support portion in the circumferential direction and defines an annular second accommodation cavity communicated with the first accommodation cavity; Wherein, both the first accommodating cavity and the second accommodating cavity can be filled with cooling liquid.

2. The superconducting magnet device according to claim 1, characterized in that: A plurality of concave place-taking parts are provided, and the plurality of concave place-taking parts are arranged at intervals along the circumference of the outer tube wall; The outer cylinder wall further comprises a plurality of connection parts connecting the plurality of inner concave place-taking parts, and at least one connection part defines a mounting cavity communicating with the first accommodating cavity.

3. The superconducting magnet device according to claim 2, characterized in that: Along the direction from the inner cylinder wall to the outer cylinder wall, the cross section of the connecting portion gradually expands.

4. The superconducting magnet device according to claim 2, characterized in that: The connecting portion is provided with an injection port for injecting coolant into the installation cavity and / or a connection port for connecting a cold head.

5. The superconducting magnet device according to claim 2, characterized in that: Also includes: A communicating pipe, one end of which is connected to the second tank body and communicated with the second accommodating cavity; the other end of which is connected to the connecting portion and communicated with the mounting cavity.

6. The superconducting magnet device according to claim 2, characterized in that: Also includes: A first winding frame is arranged on the inner cylinder wall and is located in the first accommodating cavity; A first coil is arranged on a first winding frame; A second winding frame is disposed in the second tank body and is located in the second accommodating cavity; A second coil is arranged on a second winding frame; The superconducting joint connects the first coil and the second coil.

7. The superconducting magnet device according to claim 6, characterized in that: The superconducting joint is arranged in the installation cavity.

8. The superconducting magnet device according to claim 6, characterized in that: Also includes: The placeholder is arranged between the support portion and the first winding frame.

9. The superconducting magnet device according to claim 8, characterized in that: The placeholder is connected to the support portion; The distance between the surface of the placeholder on the side close to the inner cylinder wall and the first winding skeleton is equal to the distance between the surface of the concave placeholder on the side close to the inner cylinder wall and the first winding skeleton.

10. A medical imaging device, characterized in that: include: A superconducting magnet device as claimed in any one of claims 1 to 9.

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