Vacuum chamber cold shield module for a nuclear fusion device and vacuum chamber cold shield

Abstract

The application relates to the technical field of nuclear fusion, and discloses a vacuum chamber cold screen module for a nuclear fusion device and a vacuum chamber cold screen. The vacuum chamber cold screen module comprises two groups of panel assemblies and cooling assemblies. The two groups of panel assemblies are arranged along the polar direction. Each group of panel assemblies comprises an inner side panel and an outer side panel assembly. The inner side panel and the outer side panel assembly are circumferentially arranged along the ring direction. The outer side panel assembly comprises a first outer side panel and a second outer side panel arranged along the polar direction. Two groups of cooling assemblies are arranged corresponding to each group of panel assemblies. One group of cooling assemblies is circumferentially arranged on the outer periphery of the first outer side panel and the inner side panel along the ring direction. The other group of cooling assemblies is circumferentially arranged on the outer periphery of the second outer side panel and the inner side panel along the ring direction. Each group of cooling assemblies comprises a plurality of cooling pipelines. The plurality of cooling pipelines are arranged along the polar direction at intervals. The cooling pipelines are filled with cooling medium. The vacuum chamber cold screen module for the nuclear fusion device is convenient to install, has high heat shielding efficiency and uniform heat transfer performance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of nuclear fusion, and in particular to a vacuum chamber cold screen module for a nuclear fusion device and a vacuum chamber cold screen. BACKGROUND

[0002] In a tokamak nuclear fusion device, a superconducting magnet needs to be kept in a low-temperature environment of about 4K, while the temperature of the vacuum chamber during operation can exceed 420K. In order to effectively shield the radiation heat flow and ensure the thermal stability of the superconducting system, a cold screen structure with an intermediate temperature zone (about 80K) needs to be arranged between the vacuum chamber and the magnet. However, the existing cold screen structure has limited thermal efficiency and uneven cooling. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a vacuum chamber cold screen module for a nuclear fusion device, which has high arrangement density of cooling components, uniform heat transfer performance, and solves the technical problem of limited thermal efficiency and uneven cooling of the existing cold screen structure.

[0004] The present application also aims to provide a vacuum chamber cold screen having the above-mentioned vacuum chamber cold screen module.

[0005] The vacuum chamber cold screen module for a nuclear fusion device according to an embodiment of the present application comprises: two groups of panel assemblies arranged along the poloidal direction, each group of panel assemblies comprising an inner panel and an outer panel assembly, the inner panel and the outer panel assembly being arranged along the toroidal direction, the outer panel assembly comprising a first outer panel and a second outer panel arranged along the poloidal direction; and cooling assemblies, each group of panel assemblies being provided with two groups of cooling assemblies, one group of cooling assemblies being arranged along the toroidal direction around the outer periphery of the first outer panel and the inner panel, and the other group of cooling assemblies being arranged along the toroidal direction around the outer periphery of the second outer panel and the inner panel, each group of cooling assemblies comprising a plurality of cooling pipelines arranged along the poloidal direction at intervals, and the cooling pipelines being adapted to be filled with a cooling medium.

[0006] According to the vacuum chamber cold screen module for a nuclear fusion device, the convenience of installation of the vacuum chamber cold screen module can be improved by arranging the vacuum chamber cold screen module to include two groups of panel assemblies, and each group of panel assemblies is split into an inner panel, a first outer panel and a second outer panel; one group of cooling assemblies can be arranged to surround the outer periphery of the first outer panel and the inner panel in a ring shape, and the other group of cooling assemblies can be arranged to surround the outer periphery of the second outer panel and the inner panel in a ring shape, so that the first outer panel and the second outer panel each have a separate cooling assembly, and one inner panel is provided with two groups of cooling assemblies, and each group of cooling assemblies is arranged to include a plurality of cooling pipelines, so that the panel assembly is provided with a plurality of separate cooling pipelines, and the arrangement of the plurality of separate cooling pipelines can not only increase the arrangement density of the cooling assemblies, but also make the cooling assemblies uniform, which is beneficial to improving the heat shielding performance of the vacuum chamber cold screen module and ensuring the thermal stability of the superconducting system.

[0007] In some embodiments, each of the cooling pipelines includes a first cooling pipeline arranged on the inner panel and a second cooling pipeline arranged on the outer panel assembly, and the first cooling pipeline and the second cooling pipeline are communicated through a connecting pipeline.

[0008] In some embodiments, the cooling pipeline has a first portion and a second portion arranged opposite in the polar direction, and the first portion and the second portion are communicated at the ends in the ring direction.

[0009] In some embodiments, the inner panel and the outer panel assembly each have a connecting flange, and a part of the cooling pipelines are arranged around the connecting flange.

[0010] In some embodiments, on the outer panel assembly, another part of the cooling pipelines has at least one bending portion and at least one straight segment, the bending portion communicates the straight segments, and the straight segments are fixedly connected to the outer panel assembly at multiple positions.

[0011] In some embodiments, each of the cooling pipelines has an inlet and an outlet, and the inlet and the outlet are arranged close to the top of the panel assembly in the height direction of the vacuum chamber cold screen module.

[0012] In some embodiments, one of the inlet and the outlet is arranged on the inner panel and close to the outer panel assembly, and the other is arranged on the outer panel assembly and close to the inner panel.

[0013] In some embodiments, on the panel assembly, the inlet and the outlet of the cooling pipeline are arranged close to the polar end of the panel assembly.

[0014] In some embodiments, the panel assembly further comprises a positioning block for realizing the positioning cooperation of the inner panel and the outer panel assembly; wherein the inner panel is provided with a first positioning slot, the first outer panel is provided with a second positioning slot, and the second outer panel is provided with a third positioning slot; the first positioning slot, the second positioning slot and the third positioning slot are adjacently arranged; the first positioning slot, the second positioning slot and the third positioning slot are each provided with a positioning column; the positioning block is provided with a positioning hole; and the positioning block is arranged in the first positioning slot, the second positioning slot and the third positioning slot and the positioning column is positioned and cooperated in the positioning hole.

[0015] The vacuum chamber cold shield according to the embodiment of the present application comprises a plurality of the aforementioned vacuum chamber cold shield modules, and the plurality of vacuum chamber cold shield modules are arranged in sequence along the polar direction.

[0016] The vacuum chamber cold shield according to the embodiment of the present application, by adopting the aforementioned vacuum chamber cold shield module, is beneficial to improving the installation portability and heat shielding performance of the vacuum chamber cold shield and guaranteeing the thermal stability of the superconducting system.

[0017] Additional aspects and advantages of the present application will become apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood by considering the following detailed description, including the accompanying drawings, in which:

[0019] Figure 1 The schematic diagram of the vacuum chamber cold shield module of some embodiments of the present application;

[0020] Figure 2 The exploded view of the vacuum chamber cold shield module of some embodiments of the present application;

[0021] Figure 3 The exploded view between the two groups of panel assemblies of some embodiments of the present application;

[0022] Figure 4 The exploded view of the panel assembly of some embodiments of the present application;

[0023] Figure 5 The exploded view of the panel assembly of some embodiments of the present application; Figure 4 The exploded view of the middle region I.

[0024] Reference signs:

[0025] 1000, vacuum chamber cold shield module;

[0026] 100, panel assembly;

[0027] 110, inner side panel; 111, first positioning groove;

[0028] 120, outer side panel assembly;

[0029] 121, first outer side panel; 1211, second positioning groove;

[0030] 122, second outer side panel;

[0031] 130, connecting flange;

[0032] 140, positioning block; 141, positioning hole;

[0033] 150, positioning column;

[0034] 160, insulating piece;

[0035] 200, cooling assembly;

[0036] 210, cooling pipeline;

[0037] 211, first cooling pipeline; 212, second cooling pipeline;

[0038] 213, first part; 214, second part;

[0039] 215, bent part; 216, straight segment;

[0040] 217, inlet; 218, outlet. DETAILED DESCRIPTION

[0041] Embodiments of the present application are described in detail below with reference to the accompanying drawings, in which the same or similar components have the same or similar designations and functions throughout the various figures and embodiments. The embodiments described below are examples of the present application, and are not intended to limit the present application.

[0042] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0043] Embodiments of the present application are described below with reference to the accompanying drawings, which show a vacuum chamber cold screen module 1000 for a nuclear fusion device.

[0044] As shown in Figure 1 , a vacuum chamber cold screen module 1000 for a nuclear fusion device according to an embodiment of the present application comprises two sets of panel assemblies 100 and cooling assemblies 200.

[0045] As shown in Figure 1 , Figure 2 and Figure 3 , the two sets of panel assemblies 100 are arranged in a poloidal direction, and each set of panel assemblies 100 comprises an inner panel 110 and an outer panel assembly 120, the inner panel 110 and the outer panel assembly 120 are arranged in a toroidal direction, and the outer panel assembly 120 comprises a first outer panel 121 and a second outer panel 122 arranged in a poloidal direction. That is, each set of panel assemblies 100 is divided into the inner panel 110, the first outer panel 121 and the second outer panel 122, which can improve the installation convenience of the panel assemblies 100, thereby improving the installation convenience of the vacuum chamber cold screen module 1000.

[0046] In some embodiments, the inner panel 110, the first outer panel 121 and the second outer panel 122 are all 316LN stainless steel heat receiving plates, which are conducive to ensuring the heat shielding performance of the vacuum chamber cold screen module 1000.

[0047] As shown in Figure 1 and Figure 3 , each set of panel assemblies 100 is provided with two sets of cooling assemblies 200, one set of cooling assemblies 200 is arranged in a toroidal direction around the outer periphery of the first outer panel 121 and the inner panel 110, and the other set of cooling assemblies 200 is arranged in a toroidal direction around the outer periphery of the second outer panel 122 and the inner panel 110, and each set of cooling assemblies 200 comprises a plurality of cooling pipelines 210 arranged in a poloidal direction, and the cooling pipelines 210 are filled with a cooling medium. That is, the first outer panel 121 and the second outer panel 122 are each provided with a separate cooling assembly 200, so that one set of cooling assemblies 200 only covers the first outer panel 121 and the inner panel 110 or only covers the second outer panel 122 and the inner panel 110, thereby ensuring the cooling effect of the cooling assemblies 200.

[0048] At the same time, by arranging each set of cooling assemblies 200 to comprise a plurality of cooling pipelines 210 and arranging the plurality of cooling pipelines 210 in a poloidal direction, the cooling assemblies 200 can be arranged in a high density and uniformly on the panel assemblies 100, which is conducive to improving the heat shielding performance of the vacuum chamber cold screen module 1000 and ensuring the thermal stability of the superconducting system.

[0049] In some embodiments, the cooling medium is 80K supercritical helium, which can flow within the cooling assembly 200 to achieve efficient thermal shielding, thereby improving the thermal shielding performance of the vacuum chamber cold shield module 1000.

[0050] As can be seen from the above structure, the vacuum chamber cold shield module 1000 for nuclear fusion devices in this embodiment of the invention takes into account the ease of installation, thermal uniformity and cooling efficiency, so as to ensure the working performance of the vacuum chamber cold shield module 1000 and improve the heat load shielding capability of the vacuum chamber cold shield module 1000.

[0051] In a specific example, the vacuum chamber cold shield module 1000 of this application achieves a thermal shielding efficiency of over 95%, effectively controlling the heat flux in the superconducting coil region. .

[0052] In some embodiments, such as Figure 1 and Figure 3 As shown, each cooling assembly 200 includes two cooling pipes 210. The two cooling pipes 210 are arranged at intervals along the polar direction. The cooperation of the two cooling pipes 210 makes the cooling assembly 200 arranged in a high density and uniformly on the panel assembly 100, while also reducing the manufacturing difficulty and cost of the vacuum chamber cold screen module 1000.

[0053] In some embodiments, combined with Figure 1 and Figure 3 As shown, each cooling pipe 210 includes a first cooling pipe 211 and a second cooling pipe 212. The first cooling pipe 211 is located on the inner panel 110, and the second cooling pipe 212 is located on the outer panel assembly 120. The first cooling pipe 211 and the second cooling pipe 212 are connected by a connecting pipe. That is, the first cooling pipe 211 and the second cooling pipe 212 cooperate and connect, so that the cooling pipe 210 can surround the outer periphery of the panel assembly 100 in the circumferential direction, ensuring the coverage area of ​​the cooling pipe 210.

[0054] Meanwhile, by connecting the first cooling pipe 211 and the second cooling pipe 212 through a connecting pipe, the difficulty of connecting the first cooling pipe 211 and the second cooling pipe 212 can be reduced, thereby reducing the molding difficulty of the cooling pipe 210.

[0055] In some embodiments, combined with Figure 1 and Figure 3As shown, the cooling pipeline 210 has a first portion 213 and a second portion 214 oppositely arranged along the polar direction, and the end portions of the first portion 213 and the second portion 214 communicate with each other in the ring direction. It should be noted that here refers to each cooling pipeline 210 having a first portion 213 and a second portion 214 oppositely arranged along the polar direction, and the first portion 213 and the second portion 214 cooperate to increase the coverage area of the cooling pipeline 210 on the panel assembly 100, so that the arrangement density of the cooling assembly 200 on the panel assembly 100 is high, which is beneficial to improve the heat shielding performance of the vacuum chamber cold screen module 1000 and protect the thermal stability of the superconducting system.

[0056] In some embodiments, as shown in Figure 3 As shown, in each group of cooling assemblies 200, two cooling pipelines 210 are sleeved and matched, so that the arrangement density of the cooling assembly 200 on the panel assembly 100 is not only high, but also uniform, which improves the heat shielding performance of the vacuum chamber cold screen module 1000.

[0057] In some embodiments, as shown in Figure 3 As shown, the inner panel 110 and the outer panel assembly 120 each have a connecting flange 130, and a part of the cooling pipeline 210 is arranged around the connecting flange 130. By arranging the connecting flange 130, the vacuum chamber cold screen module 1000 is facilitated to be installed, and the assembly difficulty of the vacuum chamber cold screen module 1000 is reduced.

[0058] At the same time, since the connecting flange 130 has a certain thickness and a large heat storage capacity, by arranging a part of the cooling pipeline 210 around the connecting flange 130, the cooling medium in the cooling pipeline 210 can be used to cool the connecting flange 130, which improves the temperature uniformity of the panel assembly 100 and is beneficial to improve the performance of the vacuum chamber cold screen module 1000.

[0059] In some embodiments, as shown in Figure 3 As shown, in each group of cooling assemblies 200, a part of the two cooling pipelines 210 is arranged around the connecting flange 130 to improve the cooling effect on the connecting flange 130.

[0060] In some embodiments, as shown in Figure 3As shown, on the outer side panel assembly 120, another part of the cooling pipeline 210 has at least one bending part 215 and at least one straight section 216, the bending part 215 is communicated with the straight section 216, and the straight section 216 is fixedly connected with the outer side panel assembly 120 at multiple positions. Here, it is referred to that, in the same cooling pipeline 210, one part of the cooling pipeline 210 is arranged around the connecting flange 130, and another part of the cooling pipeline 210 which is not arranged around the connecting flange 130 has at least one bending part 215 and at least one straight section 216. By arranging the bending part 215, the extension length of the cooling pipeline 210 can be increased by using the bending part 215, which facilitates to increase the coverage area of the cooling pipeline 210 on the panel assembly 100, and further makes the arrangement density of the cooling assembly 200 on the panel assembly 100 high, which is beneficial to improve the heat shielding performance of the vacuum chamber cold screen module 1000.

[0061] In specific examples, the bending part 215 is used to change the extension direction of the cooling pipeline 210, so as to increase the extension length of the cooling pipeline 210.

[0062] Meanwhile, by arranging the cooling pipeline 210 in the form of the straight section 216, on the one hand, the extension length of the cooling pipeline 210 can be further increased by using the straight section 216, and on the other hand, the fixed connection of the cooling pipeline 210 with the outer side panel assembly 120 can be realized by using the straight section 216, so that the cooling pipeline 210 can be stably connected with the outer side panel assembly 120, and the positional stability of the cooling pipeline 210 is improved, and the fixed connection difficulty of the cooling pipeline 210 with the outer side panel assembly 120 can be reduced by arranging the straight section 216 away from the connecting flange 130.

[0063] It is worth noting that the multiple positions of the straight section 216 are fixedly connected with the outer side panel assembly 120, which can improve the connection strength of the cooling pipeline 210 with the outer side panel assembly 120, and further improve the positional stability of the cooling pipeline 210.

[0064] In some examples, the cooling pipeline 210 is welded with the outer side panel assembly 120.

[0065] It should be noted that the cooling pipeline 210 arranged around the connecting flange 130 can also be fixedly connected with the panel assembly 100, which is not described in detail.

[0066] It should also be noted that, since the straight section 216 is arranged away from the connecting flange 130, the panel assembly 100 can be orthoped after being fixedly connected with the straight section 216, which reduces the deformation of the vacuum chamber cold screen module 1000 and improves the structural reliability of the vacuum chamber cold screen module 1000.

[0067] In some examples, as shown in FIG. 2,Figure 1 As shown in the drawings, on the outer panel assembly 120, the other part of the cooling pipeline 210 has a plurality of bending portions 215 and a plurality of straight line segments 216, the plurality of bending portions 215 are matched to further increase the extension length of the cooling pipeline 210, and the plurality of straight line segments 216 are matched to facilitate improving the connection strength of the cooling pipeline 210 and the outer panel assembly 120.

[0068] In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0069] In some embodiments, in combination with Figure 3 and Figure 1 As shown in the drawings, each cooling pipeline 210 has an inlet 217 and an outlet 218, and the inlet 217 and the outlet 218 are arranged close to the top of the panel assembly 100 in the height direction of the vacuum chamber cold screen module 1000. Among them, by arranging each cooling pipeline 210 to have an inlet 217 and an outlet 218, the cooling medium can be transported into the cooling pipeline 210 through the inlet 217, and the cooling medium in the cooling pipeline 210 can also be discharged, so as to realize the circulating flow of the cooling medium.

[0070] At the same time, by arranging the inlet 217 and the outlet 218 close to the top of the panel assembly 100, on the one hand, it avoids the interference between the inlet 217 and the outlet 218 and the structural member located at the bottom of the panel assembly 100, reduces the installation difficulty of the vacuum chamber cold screen module 1000, and on the other hand, it is also convenient to connect the inlet 217 and the outlet 218 to the external main pipeline, and reduces the difficulty of the communication between the external main pipeline and the cooling pipeline 210.

[0071] In some embodiments, in combination with Figure 3 and Figure 1 As shown in the drawings, one of the inlet 217 and the outlet 218 is arranged on the inner panel 110 and close to the outer panel assembly 120, and the other is arranged on the outer panel assembly 120 and close to the inner panel 110. So that the inlet 217 and the outlet 218 of the cooling pipeline 210 are arranged close to each other, further reducing the difficulty of the communication between the external main pipeline and the cooling pipeline 210.

[0072] In a specific example, in combination with Figure 3 and Figure 3 As shown in the drawings, the inlet 217 is arranged on the inner panel 110 and close to the outer panel assembly 120, and the outlet 218 is arranged on the outer panel assembly 120 and close to the inner panel 110.

[0073] Of course, in other embodiments, the outlet 218 can also be arranged on the inner panel 110 and close to the outer panel assembly 120, and the inlet 217 can be arranged on the outer panel assembly 120 and close to the inner panel 110.

[0074] In some embodiments, as shown in Figure 4 In the panel assembly 100, the inlet 217 and the outlet 218 of the cooling pipeline 210 are arranged close to the polar end of the panel assembly 100, so that the inlet 217 and the outlet 218 of one set of cooling assemblies 200 on the panel assembly 100 are arranged away from the inlet 217 and the outlet 218 of the other set of cooling assemblies 200, so as to form a larger installation space between the inlet 217 and the outlet 218 of one set of cooling assemblies 200 and the inlet 217 and the outlet 218 of the other set of cooling assemblies 200, thereby facilitating the installation of the magnets on the outer periphery of the panel assembly 100, so as to reduce the installation difficulty of the magnets.

[0075] In some embodiments, as shown in Figure 5 and Figure 4 The panel assembly 100 further comprises a positioning block 140, which is used to realize the positioning cooperation of the inner panel 110 and the outer panel assembly 120, so as to reduce the assembly difficulty of the inner panel 110 and the outer panel assembly 120, thereby facilitating the assembly of the vacuum chamber cold screen module 1000.

[0076] Optionally, as shown in Figure 5 and Figure 1 The first positioning groove 111 is arranged on the inner panel 110, the second positioning groove 1211 is arranged on the first outer panel 121, and the third positioning groove is arranged on the second outer panel 122, the first positioning groove 111, the second positioning groove 1211 and the third positioning groove are arranged adjacently, the positioning column 150 is arranged in the first positioning groove 111, the second positioning groove 1211 and the third positioning groove, the positioning hole 141 is arranged on the positioning block 140, and the positioning block 140 is arranged in the first positioning groove 111, the second positioning groove 1211 and the third positioning groove and is positioned and cooperated in the positioning hole 141, so as to realize the positioning cooperation of the positioning block 140, the inner panel 110, the first outer panel 121 and the second outer panel 122, facilitate the cooperation and connection of the inner panel 110, the first outer panel 121 and the second outer panel 122 by using the positioning block 140, realize the cooperation and connection of the inner panel 110 and the outer panel assembly 120, and reduce the assembly difficulty of the vacuum chamber cold screen module 1000.

[0077] In the description of the present application, the features defined as “first”, “second”, “third” can explicitly or implicitly include one or more of the features, which are used to distinguish the described features and have no order and no priority.

[0078] In some embodiments, the first outer side panel 121 and the second outer side panel 122, the inner side panel 110 and the outer side panel assembly 120, and the two sets of panel assemblies 100 are fixedly connected by a plurality of spaced fasteners, so that the vacuum chamber cold shield module 1000 is annularly formed as a whole, improving the structural reliability of the vacuum chamber cold shield module 1000 and reducing the local thermal deformation of the vacuum chamber cold shield module 1000, so that the vacuum chamber cold shield module 1000 has strong high-temperature cycle adaptability.

[0079] In some embodiments, the fastener is a bolt.

[0080] In a specific example, in the process of cooling from 300K to 80K by the above connection mode, the vacuum chamber cold shield module 1000 can automatically adjust and absorb the amount of thermal deformation, so that the thermal stress is reduced by more than 40%.

[0081] In some embodiments, in combination with Figure 4 , Figure 5 and ​ , the first outer side panel 121 and the second outer side panel 122, the inner side panel 110 and the outer side panel assembly 120, and the two sets of panel assemblies 100 are provided with an insulating member 160, so that there is a physical gap between the first outer side panel 121 and the second outer side panel 122, the inner side panel 110 and the outer side panel assembly 120, and the two sets of panel assemblies 100, avoiding the formation of a current closed loop by the vacuum chamber cold shield module 1000 as a whole, and reducing the electromagnetic interference and local heating caused by induced current, and increasing the electromagnetic safety of the vacuum chamber cold shield module 1000.

[0082] That is, the vacuum chamber cold shield module 1000 adopts a non-closed conductive structure, effectively avoiding the formation of an annular eddy current path.

[0083] In a specific example, by providing the insulating member 160 between the first outer side panel 121 and the second outer side panel 122, the inner side panel 110 and the outer side panel assembly 120, and the two sets of panel assemblies 100, the induced current density of the vacuum chamber cold shield module 1000 can be reduced by more than 80%, thereby avoiding structural damage and local thermal runaway of the vacuum chamber cold shield module 1000.

[0084] In some embodiments, the insulating member 160 is made of glass fiber cloth (such as G11 or G10) to ensure the insulation performance of the insulating member 160 and realize electromagnetic decoupling of the vacuum chamber cold shield module 1000.

[0085] In summary, the vacuum chamber cold shield module 1000 of the present application takes into account the uniformity of heat and cooling efficiency, induced eddy current limitation under electromagnetic disturbance, module installation convenience, and thermal expansion accommodation capacity to ensure the working performance of the vacuum chamber cold shield module 1000.

[0086] A vacuum chamber cold shield according to an embodiment of the present application is described below.

[0087] A vacuum chamber cold shield according to an embodiment of the present application comprises a plurality of vacuum chamber cold shield modules 1000.

[0088] The vacuum chamber cold shield modules 1000 are the aforementioned vacuum chamber cold shield modules 1000, and details thereof are not repeated here. The plurality of vacuum chamber cold shield modules 1000 are arranged in sequence along the poloidal direction.

[0089] As can be seen from the above structure, the vacuum chamber cold shield according to the embodiment of the present application, by using the aforementioned vacuum chamber cold shield modules 1000, is conducive to improving the installation portability and heat shielding performance of the vacuum chamber cold shield, and ensuring the thermal stability of the superconducting system.

[0090] In the description of the present application, it should be noted that unless specifically defined and limited otherwise, the terms “mounting”, “connection”, “connecting” should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0091] The vacuum chamber cold shield module 1000 for a nuclear fusion device and other components of the vacuum chamber cold shield according to the embodiment of the present application are known to those skilled in the art, and are not described in detail here.

[0092] In the description of the present application, the description referring to the terms “embodiment”, “example” and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0093] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A vacuum chamber cold shield module for a nuclear fusion device, characterized by, The application relates to a cooling device for a superconducting magnet, which comprises: two sets of panel assemblies (100), the two sets of panel assemblies (100) are arranged along a polar direction, each set of panel assemblies (100) comprises an inner panel (110), an outer panel assembly (120) and a positioning block (140), the inner panel (110) and the outer panel assembly (120) are arranged along a circumferential direction, the outer panel assembly (120) comprises a first outer panel (121) and a second outer panel (122) arranged along the polar direction, the inner panel (110) is provided with a first positioning groove (111), the first outer panel (121) is provided with a second positioning groove (1211), the second outer panel (122) is provided with a third positioning groove, the first positioning groove (111), the second positioning groove (1211) and the third positioning groove are arranged adjacently, the first positioning groove (111), the second positioning groove (1211) and the third positioning groove are provided with positioning columns (150) respectively, the positioning block (140) is provided with a positioning hole (141), the positioning block (140) is arranged in the first positioning groove (111), the second positioning groove (1211) and the third positioning groove and is positioned and matched in the positioning hole (141), and an insulating piece (160) is arranged between the first outer panel (121) and the second outer panel (122), between the inner panel (110) and the outer panel assembly (120) and between the two sets of panel assemblies (100); cooling assemblies (200), two sets of the cooling assemblies (200) are arranged correspondingly to each set of the panel assemblies (100), one set of the cooling assemblies (200) is arranged along the circumferential direction and surrounds the outer periphery of the first outer panel (121) and the inner panel (110), and the other set of the cooling assemblies (200) is arranged along the circumferential direction and surrounds the outer periphery of the second outer panel (122) and the inner panel (110), each set of the cooling assemblies (200) comprises a plurality of cooling pipelines (210), the plurality of cooling pipelines (210) are arranged along the polar direction, and the cooling pipelines (210) are filled with cooling medium.

2. Vacuum chamber cold screen module for a nuclear fusion device according to claim 1, characterized in that, Each of the cooling pipelines (210) comprises a first cooling pipeline (211) and a second cooling pipeline (212), the first cooling pipeline (211) is arranged on the inner panel (110), the second cooling pipeline (212) is arranged on the outer panel assembly (120), and the first cooling pipeline (211) and the second cooling pipeline (212) are communicated through a connecting pipe.

3. Vacuum chamber cold screen module for a nuclear fusion device according to claim 2, characterized in that, The cooling pipeline (210) has a first part (213) and a second part (214) arranged oppositely along the polar direction, and the ends of the first part (213) and the second part (214) in the circumferential direction are communicated with each other.

4. The vacuum chamber cold shield module for a nuclear fusion device of claim 1, wherein, The inner panel (110) and the outer panel assembly (120) are both provided with a connecting flange (130), and a part of the cooling pipe (210) is arranged around the connecting flange (130).

5. Vacuum chamber cold screen module for a nuclear fusion device according to claim 4, characterized in that, On the outer panel assembly (120), another part of the cooling pipe (210) is provided with at least one bending part (215) and at least one straight section (216), the bending part (215) is communicated with the straight section (216), and multiple positions of the straight section (216) are fixedly connected with the outer panel assembly (120).

6. The vacuum chamber cold shield module for a nuclear fusion device of claim 1, wherein, Each of the cooling pipes (210) is provided with an inlet (217) and an outlet (218), and the inlet (217) and the outlet (218) are arranged close to the top of the panel assembly (100) in the height direction of the vacuum chamber cold screen module.

7. Vacuum chamber cold screen module for a nuclear fusion device according to claim 6, characterized in that, One of the inlet (217) and the outlet (218) is arranged on the inner panel (110) and close to the outer panel assembly (120), and the other is arranged on the outer panel assembly (120) and close to the inner panel (110).

8. The vacuum chamber cold shield module for a nuclear fusion device according to claim 6, characterized in that, In the panel assembly (100), the inlet (217) and the outlet (218) of the cooling pipe (210) are arranged close to the polar end of the panel assembly (100).

9. A vacuum chamber cold shield, characterized by, The vacuum chamber cold screen module for nuclear fusion device comprises a plurality of panel assemblies (100) according to any one of claims 1-8, and the plurality of panel assemblies (100) are arranged in sequence along the polar direction.

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