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

Abstract

The invention relates to the technical field of nuclear fusion, and discloses a vacuum chamber cold shield module and a vacuum chamber cold shield for a nuclear fusion device.The vacuum chamber cold shield module comprises two panel assemblies and a cooling assembly, the two panel assemblies are arranged in the polar direction, and each panel assembly comprises an inner side panel assembly and an outer side panel assembly; the inner side panel and the outer side panel assembly surround a circle in the annular direction, the outer side panel assembly comprises a first outer side panel and a second outer side panel which are arranged in the polar direction, each panel assembly is correspondingly provided with two cooling assemblies, one cooling assembly surrounds the periphery of the first outer side panel and the periphery of the inner side panel in the annular direction, and the other cooling assembly surrounds the periphery of the second outer side panel in the polar direction. The other cooling assembly surrounds the periphery of the second outer side panel and the periphery of the inner side panel in the annular direction, each cooling assembly comprises a plurality of cooling pipelines, the cooling pipelines are arranged at intervals in the polar direction, and the cooling pipelines are filled with cooling media. The vacuum chamber cold shield module for the nuclear fusion device is convenient to mount, high in heat shielding efficiency and uniform in heat transfer performance.

Description

Technical Field

[0001] The present invention relates to the field of nuclear fusion technology, and in particular to a vacuum chamber cold shield module and a vacuum chamber cold shield for a nuclear fusion device. Background Art

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

[0003] The present invention aims to address at least one of the technical problems existing in the prior art. To this end, the present invention proposes a vacuum chamber cold shield module for a nuclear fusion device. The module features a high-density cooling assembly arrangement and uniform heat transfer performance, resolving the technical issues of limited thermal efficiency and uneven cooling associated with existing cold shield structures.

[0004] The present invention also aims to provide a vacuum chamber cold shield having the above vacuum chamber cold shield module.

[0005] According to an embodiment of the present invention, a vacuum chamber cold shield module for a nuclear fusion device includes: two groups of panel assemblies, the two groups of panel assemblies are arranged along the pole direction, each group of panel assemblies includes an inner panel and an outer panel assembly, the inner panel and the outer panel assembly are surrounded in a circumferential direction, and the outer panel assembly includes a first outer panel and a second outer panel arranged along the pole direction; a cooling assembly, each group of panel assemblies is correspondingly provided with two groups of cooling assemblies, one group of cooling assemblies is surrounded along the circumferential direction on the outer periphery of the first outer panel and the inner panel, and the other group of cooling assemblies is surrounded along the circumferential direction on the outer periphery of the second outer panel and the inner panel, each group of cooling assemblies includes a plurality of cooling pipes, the plurality of cooling pipes are arranged at intervals along the pole direction, and the cooling pipes are suitable for being filled with a cooling medium.

[0006] According to the vacuum chamber cold shield module for a nuclear fusion device according to an embodiment of the present invention, the vacuum chamber cold shield module is configured 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, so that the convenience of installation of the vacuum chamber cold shield module can be improved; by correspondingly arranging two groups of cooling assemblies on each group of panel assemblies, one group of cooling assemblies can be circumferentially surrounded by the outer periphery of the first outer panel and the inner panel, and the other group of cooling assemblies can be circumferentially surrounded by the outer periphery of the second outer panel and the inner panel, so that the first outer panel and the second outer panel each have a separate cooling assembly, and two groups of cooling assemblies are provided on an inner panel, and each group of cooling assemblies is configured to include multiple cooling pipes, so that a plurality of separate cooling pipes are provided on the panel assembly. The cooperation of the multiple separate cooling pipes can not only make the cooling assembly arrangement density high but also make the cooling assembly uniform, which is beneficial to improving the thermal shielding performance of the vacuum chamber cold shield module and ensuring the thermal stability of the superconducting system.

[0007] In some embodiments, each of the cooling pipes includes a first cooling pipe and a second cooling pipe, the first cooling pipe is arranged on the inner panel, the second cooling pipe is arranged on the outer panel assembly, and the first cooling pipe and the second cooling pipe are connected through a connecting pipe.

[0008] In some embodiments, the cooling line has a first portion and a second portion that are oppositely disposed along the polar direction, and ends of the first portion and the second portion in the circumferential direction are connected to each other.

[0009] In some embodiments, both the inner panel and the outer panel assembly have a connecting flange, wherein a portion of the cooling pipe is disposed around the connecting flange.

[0010] In some embodiments, on the outer panel assembly, another portion of the cooling pipe has at least one bend and at least one straight segment, the bend is connected to the straight segment, and multiple locations of the straight segment are fixedly connected to the outer panel assembly.

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

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

[0013] In some embodiments, in the panel assembly, the inlet and the outlet of the cooling line are both located near a polar end of the panel assembly.

[0014] In some embodiments, the panel assembly further includes a positioning block, which is used to achieve positioning and matching of the inner panel and the outer panel assembly; wherein, a first positioning groove is provided on the inner panel, a second positioning groove is provided on the first outer panel, and a third positioning groove is provided on the second outer panel. The first positioning groove, the second positioning groove and the third positioning groove are adjacent to each other, and positioning columns are provided in the first positioning groove, the second positioning groove and the third positioning groove. A positioning hole is provided on the positioning block, and the positioning block is provided in the first positioning groove, the second positioning groove and the third positioning groove and the positioning column is positioned and matched in the positioning hole.

[0015] The vacuum chamber cold shield according to an embodiment of the present invention comprises a plurality of the aforementioned vacuum chamber cold shield modules, wherein the plurality of vacuum chamber cold shield modules are sequentially arranged along the polar direction.

[0016] The vacuum chamber cold shield according to the embodiment of the present invention adopts the aforementioned vacuum chamber cold shield module, which is beneficial to improving the installation portability and thermal shielding performance of the vacuum chamber cold shield and ensuring the thermal stability of the superconducting system.

[0017] Additional aspects and advantages of the invention will become apparent from the description which follows, or may be learned by practice of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which: Figure 1 Schematic diagram of a vacuum chamber cold shield module according to some embodiments of the present invention; Figure 2 An exploded view of a vacuum chamber cold shield module according to some embodiments of the present invention; Figure 3 An exploded view between two sets of panel assemblies according to some embodiments of the present invention; Figure 4 An exploded view of a panel assembly according to some embodiments of the present invention; Figure 5 for Figure 4 Exploded view of area I in the middle.

[0019] Reference numerals: 1000. Vacuum chamber cold shield module; 100. Panel assembly; 110. Inner panel; 111. First positioning groove; 120, outer panel assembly; 121, first outer panel; 1211, second positioning groove; 122, second outer panel; 130, connecting flange; 140. Positioning block; 141. Positioning hole; 150. Positioning column; 160. Insulation parts; 200, cooling assembly; 210, cooling pipeline; 211, first cooling pipeline; 212, second cooling pipeline; 213, Part I; 214, Part II; 215, bending portion; 216, straight line segment; 217. Import; 218. Export. DETAILED DESCRIPTION

[0020] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0022] The following describes a vacuum chamber cold shield module 1000 for a nuclear fusion device according to an embodiment of the present invention with reference to the accompanying drawings.

[0023] like Figure 1 As shown, a vacuum chamber cold shield module 1000 for a nuclear fusion device according to an embodiment of the present invention includes: two groups of panel assemblies 100 and a cooling assembly 200.

[0024] Among them, such as Figure 1 、 Figure 2 and Figure 3As shown, two sets of panel assemblies 100 are arranged in a pole-like direction. Each set of panel assemblies 100 includes an inner panel 110 and an outer panel assembly 120. The inner panel 110 and the outer panel assembly 120 surround each other in a circumferential direction. The outer panel assembly 120 includes a first outer panel 121 and a second outer panel 122 arranged in a pole-like direction. In other words, each set of panel assemblies 100 is split 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 assembly 100, thereby improving the installation convenience of the vacuum chamber cold shield module 1000.

[0025] 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 is beneficial for ensuring the heat shielding performance of the vacuum chamber cold shield module 1000 .

[0026] like Figure 1 and Figure 3 As shown, each set of panel assemblies 100 is equipped with two sets of cooling assemblies 200. One set of cooling assemblies 200 circumferentially surrounds the outer periphery of the first outer panel 121 and the inner panel 110, while the other set of cooling assemblies 200 circumferentially surrounds the outer periphery of the second outer panel 122 and the inner panel 110. Each set of cooling assemblies 200 includes a plurality of cooling pipes 210, which are arranged in a polar-spaced arrangement and are suitable for being filled with a cooling medium. In other words, a separate cooling assembly 200 is provided on each of the first outer panel 121 and the second outer panel 122, so that a 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.

[0027] At the same time, by configuring each group of cooling components 200 to include multiple cooling pipes 210, and configuring the multiple cooling pipes 210 to be arranged in a polar direction, not only can the cooling components 200 be arranged at a high density on the panel component 100, but the cooling components 200 can also be arranged evenly, which is beneficial to improving the thermal shielding performance of the vacuum chamber cold shield module 1000 and ensuring the thermal stability of the superconducting system.

[0028] In some embodiments, the cooling medium is 80K supercritical helium, which can flow in the cooling assembly 200 to achieve efficient heat shielding, thereby improving the heat shielding performance of the vacuum chamber cold shield module 1000.

[0029] As can be seen from the above structure, the vacuum chamber cold shield module 1000 for a nuclear fusion device according to an embodiment of the present invention takes into account installation convenience, thermal uniformity, and cooling efficiency 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.

[0030] In a specific example, the vacuum chamber cold shield module 1000 of the present application has a heat shielding efficiency of more than 95%, which can effectively control the heat flux in the superconducting coil area to .

[0031] In some embodiments, as Figure 1 and Figure 3 As shown, each cooling assembly 200 includes two cooling pipes 210, and the two cooling pipes 210 are arranged in a polar direction at intervals. The two cooling pipes 210 cooperate to ensure that the cooling assembly 200 is arranged densely and evenly on the panel assembly 100, while also reducing the manufacturing difficulty and cost of the vacuum chamber cold shield module 1000.

[0032] In some embodiments, combined Figure 1 and Figure 3 As shown, each cooling line 210 includes a first cooling line 211 and a second cooling line 212. The first cooling line 211 is provided on the inner panel 110, and the second cooling line 212 is provided on the outer panel assembly 120. The first cooling line 211 and the second cooling line 212 are connected by a connecting pipe. In other words, the first cooling line 211 and the second cooling line 212 are connected in a coordinated manner, so that the cooling line 210 can be circumferentially encircled around the outer periphery of the panel assembly 100, ensuring the coverage area of ​​the cooling line 210.

[0033] At the same time, by arranging the first cooling pipeline 211 and the second cooling pipeline 212 to be connected through a connecting pipe, the difficulty of connecting the first cooling pipeline 211 and the second cooling pipeline 212 can be reduced, thereby reducing the difficulty of forming the cooling pipeline 210.

[0034] In some embodiments, combined Figure 1 and Figure 3 As shown, the cooling pipe 210 has a first portion 213 and a second portion 214 arranged in a poloidal direction, and the first portion 213 and the second portion 214 are interconnected at their ends in the circumferential direction. It should be noted that this refers to each cooling pipe 210 having a first portion 213 and a second portion 214 arranged in a poloidal direction. The first portion 213 and the second portion 214 cooperate to increase the coverage area of ​​the cooling pipe 210 on the panel assembly 100, thereby increasing the arrangement density of the cooling assembly 200 on the panel assembly 100, which is beneficial for improving the thermal shielding performance of the vacuum chamber cold shield module 1000 and ensuring the thermal stability of the superconducting system.

[0035] In some embodiments, as Figure 3As shown, in each group of cooling components 200, two cooling pipes 210 are arranged in a sleeve, so that the cooling components 200 are not only arranged at a high density on the panel component 100, but also arranged evenly, thereby improving the thermal shielding performance of the vacuum chamber cold shield module 1000.

[0036] In some embodiments, as Figure 3 As shown, both the inner panel 110 and the outer panel assembly 120 have a connecting flange 130, wherein a portion of the cooling pipe 210 is arranged around the connecting flange 130. The provision of the connecting flange 130 facilitates the installation of the vacuum chamber cold shield module 1000 and reduces the difficulty of assembling the vacuum chamber cold shield module 1000.

[0037] 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 pipe 210 around the connecting flange 130, the cooling medium in the cooling pipe 210 can be used to cool the connecting flange 130, thereby improving the temperature uniformity of the panel assembly 100, which is beneficial to improving the performance of the vacuum chamber cold shield module 1000.

[0038] In some embodiments, as Figure 3 As shown, in each cooling assembly 200 , a portion of the two cooling pipes 210 are disposed around the connecting flange 130 to enhance the cooling effect on the connecting flange 130 .

[0039] In some embodiments, as Figure 3 As shown, on the outer panel assembly 120, another portion of the cooling pipe 210 has at least one bend 215 and at least one straight segment 216. The bend 215 connects to the straight segment 216, and multiple locations of the straight segment 216 are fixedly connected to the outer panel assembly 120. This means that in the same cooling pipe 210, a portion of the cooling pipe 210 is arranged around the connecting flange 130, and another portion of the cooling pipe 210 not arranged around the connecting flange 130 has at least one bend 215 and at least one straight segment 216. By providing the bend 215, the extension length of the cooling pipe 210 can be increased by utilizing the bend 215, which facilitates increasing the coverage area of ​​the cooling pipe 210 on the panel assembly 100, further allowing the cooling assembly 200 to be arranged at a high density on the panel assembly 100, which is beneficial to improving the thermal shielding performance of the vacuum chamber cold shield module 1000.

[0040] In a specific example, the bending portion 215 is used to change the extension direction of the cooling pipe 210 , thereby increasing the extension length of the cooling pipe 210 .

[0041] At the same time, by setting the cooling pipe 210 to be formed as a straight section 216, on the one hand, it is convenient to further increase the extension length of the cooling pipe 210 through the straight section 216, and on the other hand, it is also convenient to use the straight section 216 to realize the fixed connection between the cooling pipe 210 and the outer panel assembly 120, so that the cooling pipe 210 can be stably connected to the outer panel assembly 120, thereby improving the position stability of the cooling pipe 210. Moreover, since the straight section 216 is set away from the connecting flange 130, the above setting can also reduce the difficulty of fixed connection between the cooling pipe 210 and the outer panel assembly 120.

[0042] It is worth noting that the present application fixes the straight section 216 to the outer panel assembly 120 at multiple locations, which can improve the connection strength between the cooling pipe 210 and the outer panel assembly 120 and further improve the position stability of the cooling pipe 210.

[0043] In some embodiments, the cooling line 210 is welded to the outer panel assembly 120 .

[0044] It should be noted that the cooling pipe 210 arranged around the connecting flange 130 can also be fixedly connected to the panel assembly 100, which is not described in detail in this application.

[0045] It should also be noted that, since the straight section 216 is arranged away from the connecting flange 130, by fixedly connecting the straight section 216 to the outer panel assembly 120, it is also convenient to correct the panel assembly 100 after the connection is in place, thereby reducing the deformation of the vacuum chamber cold shield module 1000 and improving the structural reliability of the vacuum chamber cold shield module 1000.

[0046] In some embodiments, as Figure 3 As shown, on the outer panel assembly 120, another part of the cooling pipe 210 has multiple bends 215 and multiple straight segments 216. The combination of the multiple bends 215 can further increase the extension length of the cooling pipe 210, and the combination of the multiple straight segments 216 is beneficial to improving the connection strength between the cooling pipe 210 and the outer panel assembly 120.

[0047] In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0048] In some embodiments, combined Figure 1 and Figure 3As shown, each cooling line 210 has an inlet 217 and an outlet 218. In the height direction of the vacuum chamber cold shield module 1000, the inlet 217 and the outlet 218 are both arranged near the top of the panel assembly 100. By configuring each cooling line 210 with an inlet 217 and an outlet 218, the cooling medium can be transported into the cooling line 210 through the inlet 217, and the cooling medium in the cooling line 210 can be discharged, thereby achieving a circulating flow of the cooling medium.

[0049] At the same time, by arranging both the inlet 217 and the outlet 218 close to the top of the panel assembly 100, on the one hand, interference between the inlet 217 and the outlet 218 and the structural parts at the bottom of the panel assembly 100 is avoided, thereby reducing the difficulty of installing the vacuum chamber cold shield module 100; on the other hand, it is also convenient to connect the inlet 217 and the outlet 218 to the external main line, thereby reducing the difficulty of connecting the external main line with the cooling pipe 210.

[0050] In some embodiments, combined Figure 1 and Figure 3 As shown, one of the inlet 217 and the outlet 218 is provided on the inner panel 110 and close to the outer panel assembly 120, while the other is provided on the outer panel assembly 120 and close to the inner panel 110. This allows the inlet 217 and the outlet 218 of the cooling line 210 to be provided close to each other, further reducing the difficulty of connecting the external main line with the cooling line 210.

[0051] In a specific example, combining Figure 1 and Figure 3 As shown, the inlet 217 is provided on the inner panel 110 and is disposed close to the outer panel assembly 120 , and the outlet 218 is provided on the outer panel assembly 120 and is disposed close to the inner panel 110 .

[0052] Of course, in some other embodiments, the outlet 218 may be disposed on the inner panel 110 and close to the outer panel assembly 120 , while the inlet 217 may be disposed on the outer panel assembly 120 and close to the inner panel 110 .

[0053] In some embodiments, as Figure 3As shown, in the panel assembly 100, the inlet 217 and the outlet 218 of the cooling pipe 210 are both arranged near the polar end of the panel assembly 100. This allows the inlet 217 and the outlet 218 of one set of cooling assemblies 200 on the panel assembly 100 to be arranged away from the inlet 217 and the outlet 218 of the other set of cooling assemblies 200, thereby forming 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 magnets on the periphery of the panel assembly 100 and reducing the difficulty of installing the magnets.

[0054] In some embodiments, combined Figure 4 and Figure 5 As shown, the panel assembly 100 further includes a positioning block 140, which is used to achieve positioning and matching between the inner panel 110 and the outer panel assembly 120. This reduces the difficulty of assembling the inner panel 110 and the outer panel assembly 120, thereby facilitating the assembly of the vacuum chamber cold shield module 1000.

[0055] Optionally, combined Figure 4 and Figure 5 As shown, a first positioning groove 111 is provided on the inner panel 110, a second positioning groove 1211 is provided on the first outer panel 121, and a third positioning groove is provided on the second outer panel 122. The first positioning groove 111, the second positioning groove 1211 and the third positioning groove are arranged adjacent to each other, and positioning columns 150 are provided in the first positioning groove 111, the second positioning groove 1211 and the third positioning groove. A positioning hole 141 is provided 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 the positioning column 150 is positioned and fitted in the positioning hole 141. This enables the positioning block 140 to be positioned and matched with the inner panel 110, the first outer panel 121 and the second outer panel 122, making it easier to use the positioning block 140 to achieve the matching connection between the inner panel 110, the first outer panel 121 and the second outer panel 122, thereby achieving the matching connection between the inner panel 110 and the outer panel assembly 120, and reducing the difficulty of assembling the vacuum chamber cold shield module 1000.

[0056] In the description of the present invention, features defined as "first", "second" and "third" may explicitly or implicitly include one or more such features, and are used to distinguish and describe features, without any distinction in order or importance.

[0057] In some embodiments, the first outer panel 121 and the second outer panel 122, the inner panel 110 and the outer panel assembly 120, and the two sets of panel assemblies 100 are all fixedly connected by a plurality of spaced fasteners. This allows the vacuum chamber cold shield module 1000 to be circumferentially formed into a single unit, thereby improving the structural reliability of the vacuum chamber cold shield module 1000 and reducing local thermal deformation of the vacuum chamber cold shield module 1000, thereby making the vacuum chamber cold shield module 1000 highly adaptable to high-temperature cycles.

[0058] In some embodiments, the fastener is a bolt.

[0059] In a specific example, during the process of cooling from 300K to 80K through the above connection method, the vacuum chamber cold shield module 1000 can automatically adjust and absorb the thermal deformation, thereby reducing the thermal stress by more than 40%.

[0060] In some embodiments, combined Figure 1 、 Figure 4 and Figure 5 As shown, insulating members 160 are provided 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 groups of panel assemblies 100, so that physical gaps exist 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 groups of panel assemblies 100, thereby preventing the vacuum chamber cold shield module 1000 from forming a current closed loop as a whole, reducing electromagnetic interference and local heating caused by induced current, and increasing the electromagnetic safety of the vacuum chamber cold shield module 1000.

[0061] In other words, the vacuum chamber cold shield module 1000 adopts a non-closed conductive structure, which effectively avoids the formation of a circular eddy current path.

[0062] In a specific example, by providing an insulating member 160 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 groups 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.

[0063] In some embodiments, the insulating member 160 is made of glass fiber cloth (eg, G11 or G10) to ensure the insulation performance of the insulating member 160 and achieve electromagnetic decoupling of the vacuum chamber cold shield module 1000 .

[0064] In summary, the vacuum chamber cold shield module 1000 of the present application takes into account thermal uniformity 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.

[0065] The following describes a cold shield for a vacuum chamber according to an embodiment of the present invention.

[0066] A vacuum chamber cold shield according to an embodiment of the present invention includes: a plurality of vacuum chamber cold shield modules 1000 .

[0067] The vacuum chamber cold shield module 1000 is the aforementioned vacuum chamber cold shield module 1000 , and details of the vacuum chamber cold shield module 1000 are not described here. A plurality of vacuum chamber cold shield modules 1000 are arranged in sequence along the polar direction.

[0068] As can be seen from the above structure, the vacuum chamber cold shield of the embodiment of the present invention, by adopting the aforementioned vacuum chamber cold shield module 1000, is conducive to improving the installation portability and thermal shielding performance of the vacuum chamber cold shield, and ensuring the thermal stability of the superconducting system.

[0069] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0070] 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 invention are well known to those skilled in the art and will not be described in detail here.

[0071] Throughout this specification, reference to terms such as "embodiment" or "example" indicates that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0072] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A vacuum chamber cold shield module for a nuclear fusion device, characterized in that: include: Two groups of panel assemblies (100), the two groups of panel assemblies (100) are arranged along the polar direction, each group of the panel assemblies (100) includes an inner panel (110) and an outer panel assembly (120), the inner panel (110) and the outer panel assembly (120) are arranged around the inner panel (110), and the outer panel assembly (120) includes a first outer panel (121) and a second outer panel (122) arranged along the polar direction; A cooling assembly (200), wherein each group of the panel assemblies (100) is provided with two groups of the cooling assemblies (200), wherein one group of the cooling assemblies (200) surrounds the outer periphery of the first outer panel (121) and the inner panel (110) along the circumferential direction, and the other group of the cooling assemblies (200) surrounds the outer periphery of the second outer panel (122) and the inner panel (110) along the circumferential direction, and each group of the cooling assemblies (200) includes a plurality of cooling pipes (210), and the plurality of cooling pipes (210) are arranged at intervals along the polar direction, and the cooling pipes (210) are suitable for being filled with a cooling medium.

2. The vacuum chamber cold shield module for a nuclear fusion device according to claim 1, characterized in that: Each of the cooling pipes (210) comprises a first cooling pipe (211) and a second cooling pipe (212), wherein the first cooling pipe (211) is provided on the inner panel (110), and the second cooling pipe (212) is provided on the outer panel assembly (120), and the first cooling pipe (211) and the second cooling pipe (212) are connected via a connecting pipe.

3. The vacuum chamber cold shield module for a nuclear fusion device according to claim 2, characterized in that: The cooling pipeline (210) comprises a first portion (213) and a second portion (214) which are arranged opposite to each other along the polar direction, and the first portion (213) and the second portion (214) are connected to each other at ends in the annular direction.

4. The vacuum chamber cold shield module for a nuclear fusion device according to claim 1, characterized in that: The inner panel (110) and the outer panel assembly (120) both have a connecting flange (130), wherein a portion of the cooling pipe (210) is arranged around the connecting flange (130).

5. The vacuum chamber cold shield module for a nuclear fusion device according to claim 4, characterized in that: On the outer panel assembly (120), another portion of the cooling pipe (210) has at least one bent portion (215) and at least one straight segment (216), the bent portion (215) is connected to the straight segment (216), and multiple locations of the straight segment (216) are fixedly connected to the outer panel assembly (120).

6. The vacuum chamber cold shield module for a nuclear fusion device according to claim 1, characterized in that: Each of the cooling pipes (210) has an inlet (217) and an outlet (218), and in the height direction of the vacuum chamber cold shield module, the inlet (217) and the outlet (218) are both arranged close to the top of the panel assembly (100).

7. The vacuum chamber cold shield module for a nuclear fusion device according to claim 6, characterized in that: One of the inlet (217) and the outlet (218) is provided on the inner panel (110) and is disposed close to the outer panel assembly (120), and the other is provided on the outer panel assembly (120) and is disposed 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 line (210) are both arranged near the polar end of the panel assembly (100).

9. The vacuum chamber cold shield module for a nuclear fusion device according to any one of claims 1 to 8, characterized in that: The panel assembly (100) further comprises a positioning block (140), wherein the positioning block (140) is used to achieve positioning and matching between the inner panel (110) and the outer panel assembly (120); 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), and 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 adjacent to each other. Positioning columns (150) are provided in the first positioning groove (111), the second positioning groove (1211) and the third positioning groove. A positioning hole (141) is provided on the positioning block (140). The positioning block (140) is arranged in the first positioning groove (111), the second positioning groove (1211) and the third positioning groove, and the positioning column (150) is positioned and fitted in the positioning hole (141).

10. A vacuum chamber cold shield, characterized in that: The device comprises a plurality of vacuum chamber cold shield modules for a nuclear fusion device according to any one of claims 1 to 9, wherein the plurality of vacuum chamber cold shield modules are arranged in sequence along the polar direction.

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