Central column assembly for a nuclear fusion device

Abstract

The application relates to the technical field of nuclear fusion device installation, and discloses a center column assembly for a nuclear fusion device, which comprises a main body part, a Dewar base, a center column bottom plate and a center column main body; the inside of the main body part is formed with a main body space; the Dewar base is located at the bottom of the main body space; the center column bottom plate is located at the bottom of the Dewar base and is connected with the main body part in a leveling mode; the bottom of the center column main body is fixedly connected with the center column bottom plate, and the top of the center column main body is formed with a rotatable rotating part; the center column main body is detachably connected with the Dewar base; wherein the center column main body is constructed as at least two sectional columns in the axial direction, and at least two adjacent sectional columns are detachably matched. The center column assembly for the nuclear fusion device designed according to the application has higher precision, richer adjustment functions and good structural reliability.

Description

Technical Field

[0001] This invention relates to the field of nuclear fusion device installation technology, and in particular to a central column assembly for a nuclear fusion device. Background Technology

[0002] In related technologies, nuclear fusion devices have structures such as a central column, a TF coil assembly, a vacuum chamber, and a vacuum chamber cold shield. Among these, the central column fixture is an important fixture for the installation, adjustment, and positioning of the TF coil assembly, vacuum chamber, and vacuum chamber cold shield. The central column body is a key component of the central column fixture, bearing most of the weight of the installed components. At the same time, it serves as the load-bearing support and rotation support point for the radial beam. Its installation accuracy and hoisting deformation have a significant impact on the installation of the main structure and important components.

[0003] In some existing technologies, the central column is a single column with small size and weight, light load capacity, low overall load-bearing capacity, simple function, simple installation, low precision requirements, and no need to serve as a rotation fulcrum. However, when the installation components are large in size and weight, require high installation precision, and the installation space of the column is narrow and adjustment and installation on tooling are required, this column structure cannot meet the high precision requirements and complex adjustment functions of the installation components. Therefore, the structural reliability of this central column is poor. Summary of the Invention

[0004] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, one object of this invention is to provide a central column assembly for a nuclear fusion device. The central column assembly for a nuclear fusion device designed according to this invention has higher precision, richer adjustment functions, and better structural reliability.

[0005] The central column assembly for a nuclear fusion device according to the present invention comprises: a main body having a main space formed inside; a Dewar base located at the bottom of the main space; a central column base plate located at the bottom of the Dewar base and leveled and connected to the main body; a central column body having its bottom fixedly connected to the central column base plate and its top having a rotatable rotating component, the central column body being detachably connected to the Dewar base; wherein the central column body is constructed as at least two axially split columns, at least two adjacent split columns being detachably fitted together; the central column body includes: a base The base column has a boss extending radially inward or radially outward; a shear block has a receiving groove for accommodating the boss, the receiving groove abutting against at least a portion of the surface of the boss to restrict circumferential movement of the base column; a conversion column is disposed at the top of the base column, a TF coil support frame is disposed on the conversion column, and the conversion column is detachably connected to the base column; a fixing ring protruding radially is formed at the bottom of the base column, the fixing ring being detachably connected to the center column base plate via a plurality of circumferentially spaced pressure blocks.

[0006] According to the central column assembly for a nuclear fusion device of the present invention, the main body of the central column is a segmented structure. The machining accuracy and positional accuracy of each segment can be designed individually according to actual conditions, resulting in high design accuracy of the central column. This is beneficial for the installation of various structures of the nuclear fusion device. Furthermore, each segment can be measured again after installation to provide data support for subsequent installations. After installation, each support platform can be adjusted or reverse-processed based on the measurement data to ensure accuracy requirements. The top of the central column can also serve as a rotation fulcrum, allowing some structures of the nuclear fusion device to be rotatably mounted on the top of the central column to adjust their position relative to the central column in the circumferential direction. The central column assembly designed according to the present invention has higher accuracy, richer adjustment functions, and better structural reliability.

[0007] According to some embodiments of the present invention, the shear block is provided with an adjustment block, and the adjustment block abuts against at least one side wall of the boss in the horizontal direction.

[0008] According to some embodiments of the present invention, a plurality of radially extending support beams are provided on the outer periphery of the base column, and the free ends of the support beams are connected to the Dewar base for temporary support of the hoisting components.

[0009] According to some embodiments of the present invention, the end of the support beam is formed with a support leg protruding in the height direction, and the end of the support leg is provided with a leveling pad for connection with the Dewar base.

[0010] According to some embodiments of the present invention, the TF coil support frame is configured as a plurality of such frames spaced apart in the circumferential direction of the conversion column, each of the TF coil support frames being fan-shaped and the plurality of TF coil support frames together defining an annular support platform.

[0011] According to some embodiments of the present invention, the central column body includes: an equatorial column, which is disposed on top of the conversion column and detachably connected to the conversion column, wherein the equatorial columns are configured to be arranged in sequence along the axial direction, and adjacent equatorial columns are detachably connected; and an upper column, which is disposed on top of the equatorial column, and a rotating support column is disposed at the top of the upper column, wherein the rotating component is disposed on the rotating support column.

[0012] According to some embodiments of the present invention, at least one of the base column, the transition column, the equatorial column, and the upper column is provided with a ladder inside.

[0013] In summary, the central column assembly for a nuclear fusion device according to the present invention has a segmented structure. The machining and positional accuracy of each segment can be individually designed according to actual conditions, resulting in high design accuracy of the central column. This is beneficial for the installation of various structures of the nuclear fusion device. Furthermore, each segment can be re-measured after installation, providing data support for subsequent installations. After installation, each support platform can be adjusted or reverse-processed based on the measurement data to ensure accuracy requirements. The top of the central column can serve as a rotation fulcrum, allowing some structures of the nuclear fusion device to be rotatably mounted on the top of the central column to adjust their position relative to the central column in the circumferential direction. The central column assembly designed according to the present invention has higher accuracy, richer adjustment functions, and better structural reliability.

[0014] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0016] Figure 1 This is a schematic diagram of the central column assembly structure for a nuclear fusion device according to an embodiment of the present invention;

[0017] Figure 2 This is a partial cross-sectional view of the central column assembly for a nuclear fusion device according to an embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the main structure of the central column according to an embodiment of the present invention;

[0019] Figure 4 yes Figure 3 Another perspective diagram of the structure.

[0020] Figure label:

[0021] 1. Central column assembly;

[0022] 10. Main body; 10a. Main space;

[0023] 20. Dewar base;

[0024] 30. Center column base plate;

[0025] 40. Central column body; 41. Bottom column body; 411. Boss; 412. Fixing ring; 42. Shear block; 421. Adjusting block; 43. Support beam; 431. Support leg; 432. Leveling pad; 44. Transition column; 441. TF coil support frame; 45. Equatorial column; 46. Upper column; 47. Rotating support column. Detailed Implementation

[0026] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0027] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] In related technologies, nuclear fusion devices have structures such as a central column, a TF coil assembly, a vacuum chamber, and a vacuum chamber cold shield. Among these, the central column fixture is an important fixture for the installation, adjustment, and positioning of the TF coil assembly, vacuum chamber, and vacuum chamber cold shield. The central column body is a key component of the central column fixture, bearing most of the weight of the installed components. At the same time, it serves as the load-bearing support and rotation support point for the radial beam. Its installation accuracy and hoisting deformation have a significant impact on the installation of the main structure and important components.

[0032] In some existing technologies, the central column is a single column with small size and weight, light load capacity, low overall load-bearing capacity, simple function, simple installation, low precision requirements, and no need to serve as a rotation fulcrum. However, when the installation components are large in size and weight, require high installation precision, and the installation space of the column is narrow and adjustment and installation on tooling are required, this column structure cannot meet the high precision requirements and complex adjustment functions of the installation components. Therefore, the structural reliability of this central column is poor.

[0033] The following is for reference. Figures 1-4 A central column assembly 1 for a nuclear fusion device according to an embodiment of the present invention is described.

[0034] like Figure 1As shown, the central column assembly 1 for a nuclear fusion device according to the present invention includes: a main body 10, a Dewar base 20, a central column base plate 30, and a central column body 40. The main body 10 has a main body space 10a formed inside; the Dewar base 20 is located at the bottom of the main body space 10a; the central column base plate 30 is located at the bottom of the Dewar base 20 and is leveled and connected to the main body 10; the bottom of the central column body 40 is fixedly connected to the central column base plate 30 and a rotatable rotating component is formed at the top; the central column body 40 is detachably connected to the Dewar base 20; wherein, the central column body 40 is constructed as at least two split columns in the axial direction, and at least two adjacent split columns are detachably coupled.

[0035] Specifically, the nuclear fusion device has a main body 10 and a Dewar base 20. A central column body 40 is connected to both the main body 10 and the Dewar base 20 to determine the position of the main body 10 relative to the Dewar base 20. Here, the central column body 40 is used to mount the various structures of the nuclear fusion device and is suitable for determining the relative positions of each structure, such as the main body 10 and the Dewar base 20. The central column body 40 serves as the load-bearing and rotational support point for each structure of the nuclear fusion device. Its top has a rotating component, allowing some structures of the nuclear fusion device to be rotatably mounted on the top of the central column body 40 to adjust the position of these structures relative to the central column body 40 in the circumferential direction.

[0036] The central column base plate 30 is typically pre-embedded in the bottom of the main body 10 to facilitate the installation of the central column body 40. Due to the high precision requirements of the nuclear fusion device's installation, the central column base plate 30 needs to be leveled and connected to the main body 10 to ensure the horizontal and vertical alignment of the central column body 40. The bottom of the central column body 40 is fixedly connected to the central column base plate 30, while the top is rotatably fitted with other structures of the nuclear fusion device.

[0037] After all the structures of the nuclear fusion device are assembled, the central column body 40 can be disassembled from these structures. To facilitate the disassembly of the central column body 40, it can be designed as a multi-segment split column spliced ​​together. Adjacent split columns can be detachably connected in the axial direction. The multi-segment design of the central column body 40 makes the transportation of the central column body 40 convenient, and the operation of installing or disassembling the central column body 40 is also simpler. After the main body 10 and the Dewar base 20 are installed and matched, the central column body 40 can be disassembled in segments, leaving the main body 10 and the Dewar base 20, thus realizing the assembly of the nuclear fusion device.

[0038] According to the central column assembly 1 for a nuclear fusion device of the present invention, the central column body 40 is a segmented structure. The machining accuracy and positional accuracy of each segment can be designed individually according to the actual situation, resulting in high design accuracy of the central column. This is beneficial for the installation of various structures of the nuclear fusion device. Furthermore, each segment can be measured again after installation to provide data support for subsequent installations. After installation, each support platform can be adjusted or reverse-processed according to the measurement data to ensure accuracy requirements. The top of the central column body 40 can also serve as a rotation fulcrum, allowing some structures of the nuclear fusion device to be rotatably mounted on the top of the central column body 40 to adjust the position of these structures relative to the central column body 40 in the circumferential direction. The central column assembly 1 designed according to the present invention has higher accuracy, richer adjustment functions, and better structural reliability.

[0039] It is worth mentioning that the existing central column has a large overall size (φ6.2×19m), a large weight (approximately 110t), high installation accuracy requirements (±1.5mm), and high accuracy requirements for each support position (±1mm). In addition, the hoisting gap distance between the bottom of the central column and the center hole of the Dewar base 20 is 25mm. This is to ensure that during the installation of the central column and each support structure, the position adjustment based on the measurement data and the reverse processing of the column body ensure that the central column body 40 meets the accuracy requirements after installation.

[0040] Existing technologies require high precision in the design and installation of the central column, but the entire central column is often difficult to disassemble from the assembled nuclear fusion device. In this invention, the central column body 40 is designed in segments, allowing for individual design of each segment. The machining and positional precision of each segment can be designed separately according to actual conditions, resulting in high design precision for the central column. This facilitates the installation of various structures within the nuclear fusion device. Furthermore, the segmented columns can be installed from bottom to top, and subsequent measurements after each segment installation provide data support for subsequent installations. After installation, each support platform can be adjusted or reverse-engineered based on the measurement data to ensure the required precision.

[0041] According to some embodiments of the present invention, such as Figure 4 As shown, the central column body 40 includes a bottom column body 41 and a shear block 42. The bottom column body 41 is provided with a boss 411 extending radially into the bottom column body 41 or radially outward. The shear block 42 is formed with a receiving groove for receiving the boss 411. The receiving groove abuts against at least a portion of the surface of the boss 411 to restrict the bottom column body 41 from moving circumferentially.

[0042] Specifically, the boss 411 provided on the bottom column body 41 is suitable for installation in the receiving groove of the shear block 42. The inner wall surface of the receiving groove is suitable for abutting against the outer wall surface of the boss 411 to prevent the bottom column body 41 from moving circumferentially, thereby restricting the circumferential movement of the central column body 40, so that the installation reference of the central column body 40 will not be offset, and the installation accuracy is guaranteed.

[0043] In some embodiments, the shear block 42 is fixedly connected to the center column base plate 30 to limit the relative positional relationship between the center column body 40 and the center column base plate 30, thereby limiting the positional relationship between the center column body 40, the body portion 10, and the Dewar base 20.

[0044] In some embodiments, the bottom column 41 has four protrusions 411 at its bottom. The protrusions 411 are installed in the receiving groove of the shear block 42. The bottom column 41 adopts the installation method of protrusions 411 and shear block 42 receiving groove, which can adjust the positional deviation between the central column body 40 and the central column base plate 30, ensure the installation position accuracy of the central column body 40, and prevent the central column body 40 from circumferentially moving by using shear block 42 fixing method, thus ensuring installation accuracy.

[0045] According to some embodiments of the present invention, such as Figure 4 As shown, an adjustment block 421 is provided on the shear block 42, and the adjustment block 421 abuts against at least one side wall of the boss 411 in the horizontal direction.

[0046] Specifically, the adjusting block 421 is disposed between the inner wall surface of the receiving groove and the outer wall surface of the boss 411, and abuts against both the inner wall surface of the receiving groove and the outer wall surface of the boss 411 to ensure good and firm contact between the boss 411 and the shear block 42. Furthermore, the adjusting block 421 is horizontally adjustable. By adjusting the size of the adjusting block 421, the relative position of the boss 411 and the shear block 42 can be adjusted to ensure the installation position accuracy of the bottom column body 41 and to compensate for the positional deviation between the center column base plate 30 and the center column body 40.

[0047] According to some embodiments of the present invention, such as Figures 2-3 As shown, the outer periphery of the base column 41 is provided with a plurality of radially extending support beams 43, the free ends of which are connected to the Dewar base 20 for temporary support of the hoisting components.

[0048] Specifically, one end of the support beam 43 is fixed to the base column 41 in the radial direction, and the other end extends outward in the radial direction and is adapted to be fixedly connected to the Dewar base 20. The support beam 43 serves as a temporary placement position for hoisting components such as PF magnets (polotropic magnets) and is suitable for supporting hoisting components such as PF magnets.

[0049] According to some embodiments of the present invention, such as Figures 2-3As shown, the end of the support beam 43 has a support leg 431 protruding in the height direction, and the end of the support leg 431 is provided with a leveling pad 432 for connecting with the Dewar base 20.

[0050] Specifically, one end of the support beam 43 is fixed to the base column 41 in the radial direction, and the other end extends radially outward and is fixed to the support leg 431 via a flange. Simultaneously, the support leg 431 is welded to the Dewar base 20 so that the support beam 43 and the Dewar base 20 jointly support the weight of the PF magnet and other lifting components. Here, a leveling shim 432 is provided at the end of the support leg 431. The leveling shim 432 can be custom-made according to the flatness of the Dewar base 20, ensuring that the upper surface of the support beam 43 is on the same horizontal line, thus guaranteeing the installation position accuracy of the base column 41.

[0051] In some embodiments, the support beams 43 include eight beams, each beam extending radially outward from the base column 41, and the eight support beams 43 are spaced apart and equally spaced in the circumferential direction of the base column 41.

[0052] According to some embodiments of the present invention, such as Figures 2-3 As shown, a radially protruding fixing ring 412 is formed at the bottom of the base column 41. The fixing ring 412 is detachably connected to the center column base plate 30 through multiple pressure blocks spaced apart in the circumferential direction. The pressure blocks at the bottom of the base column 41 are designed to connect with the center column base plate 30, which can improve the overall bending resistance of the center column body 40. In some embodiments, the fixing ring 412 is fixed by two rings of bolts, and the outer ring is designed with pressure blocks for tightening, which enhances the bending resistance of the center column body 40 and can also reduce the size of the center column body 40, making it easier to install and disassemble.

[0053] According to some embodiments of the present invention, such as Figures 2-3 As shown, the central column body 40 includes a conversion column 44, which is located on the top of the bottom column body 41. A TF coil support frame 441 is provided on the conversion column 44, and the conversion column 44 is detachably connected to the bottom column body 41.

[0054] Specifically, the transition column 44 is suitable for connecting the base column body 41 and the TF coil support frame 441. To facilitate the installation of hoisting components such as the PF magnet, the transition column 44 can raise the overall height of the central column body 40. The lower part of the transition column 44 is designed as an inner flange, which is bolted to the base column body 41. The upper outer flange of the transition column 44 is connected to the TF coil support frame 441. Here, the base column body 41 is equipped with a support beam 43, while the transition column 44 is equipped with a TF coil support frame 441, which are used to support the weight of the PF magnet and the TF coil, respectively, to ensure the stability of these hoisting components during temporary placement.

[0055] Furthermore, the TF coil support frame 441 needs to be adjusted or reverse-engineered based on on-site measurement data during installation to ensure the levelness and installation dimensions of the TF coil support frame 441.

[0056] According to some embodiments of the present invention, such as Figures 2-3 As shown, the TF coil support frame 441 is constructed as multiple frames spaced apart around the conversion column 44. Each TF coil support frame 441 is fan-shaped, and the multiple TF coil support frames 441 together define an annular support platform. Specifically, the TF coil support frame 441 is composed of multiple fan-shaped structures and serves as a jack for adjusting the position of the inner TF coil after the SECTOR (vacuum chamber, vacuum chamber cold shield, and TF coil assembly) is hoisted.

[0057] According to some embodiments of the present invention, such as Figures 2-3 As shown, the central column body 40 includes an equatorial column 45 and an upper column 46. The equatorial column 45 is located on top of the conversion column 44 and is detachably connected to the conversion column 44. The equatorial column 45 is constructed as a plurality of columns arranged sequentially in the axial direction, and adjacent equatorial columns 45 are detachably connected. The upper column 46 is located on top of the equatorial column 45, and a rotating support column 47 is provided at the top of the upper column 46. A rotating component is provided on the rotating support column 47.

[0058] Specifically, the multiple equatorial columns 45 have the same structure, and adjacent equatorial columns 45 are connected by bolts. The top of the upper column 46 is provided with a rotating support column 47, and the rotating support column 47 is provided with a rotating component. The rotating component is suitable for providing a rotating fulcrum for the TF kit. The working platform is built by relying on the upper column 46 to support the platform, which facilitates the disassembly of the connecting rod between the lifting device and the SECTOR.

[0059] In some embodiments, the rotating component is a rotary bearing.

[0060] According to some embodiments of the present invention, at least one of the base column 41, the transition column 44, the equatorial column 45, and the upper column 46 is provided with a ladder inside. The ladder is bolted to these structures, and the ladder facilitates the installation and disassembly of the split columns.

[0061] The central column body 40 designed according to the present invention is mainly assembled from bottom to top by a base column 41, a transition column 44, an equatorial column 45, an upper column 46, and a rotating support column 47. The base column 41, support beam 43, and support leg 431 serve as the main load-bearing structure for temporary support of the SECTOR and PF magnets. The base column 41 needs to be hoisted into the center hole of the Dewar base 20 and placed on the central column base plate 30 on the building foundation, and fixed together with the central column base plate 30. The bottom of the base column 41 is connected to the central column base plate 30, with an adjusting shim in the middle for adjusting the levelness and position of the Dewar base 20, ensuring that the support beam 43 remains horizontal and that the support leg 431 has good contact with the base plate of the Dewar base 20. The bottom of the base column 41 has four protrusions 411, which are installed in the receiving grooves of the shear blocks 42. This installation method of protrusions 411 and shear blocks 42 allows for adjustment of the deviation in the position of the central column base plate 30 and the pin holes, ensuring the installation position accuracy of the central column body 40. The shear blocks 42 are used for fixing to prevent circumferential movement of the central column body 40, thus preventing any shift in the device's installation reference and ensuring installation accuracy. Furthermore, to ensure the installation position accuracy of the base column 41 and compensate for the positional deviation of the central column base plate 30, an adjustment block 421 is provided between the protrusion 411 structure and the receiving groove, ensuring good contact and secure fixation between the protrusion 411 structure and the shear blocks 42.

[0062] The support beams 43 comprise eight beams, each extending radially outward from the base column 41. The eight support beams 43 are spaced evenly spaced circumferentially around the base column 41. One end of each support beam 43 is fixed to the base column 41 radially, while the other end extends radially outward and is adapted to be fixedly connected to the Dewar base 20. The support beams 43 serve as temporary placement locations for lifting components such as the PF magnet (polotropic magnet), and are suitable for supporting these components. One end of each support beam 43 is fixed to the base column 41, and the other end is fixed to the support leg 431 via a flange. The bottom support leg 431 is welded and fixed to the base plate of the Dewar base 20, collectively supporting the weight of the PF coil and the temporary placement fixture. The bottom support leg 431 has a leveling pad 432 at its bottom. The support leg 431 is fixed to the Dewar base 20 by welding. It is custom-made according to the flatness of the Dewar base 20 to ensure that the temporary support is on the same horizontal line. The fixing ring 412 of the bottom column body 41 is fixed with two rings of bolts, and the outer ring is designed with pressure blocks for tightening, so as to improve the overall bending resistance of the bottom column body 41 and reduce the size of the central column body 40, making it easier to install and disassemble. The bottom column body 41 is designed with four circumferential shear blocks 42 inside to prevent the bottom column body 41 from moving circumferentially.

[0063] The base column 41 is designed with reinforcing ribs both inside and out to improve the overall load-bearing capacity of the base column 41. At the same time, through holes leading to the interior of the base column 41 are provided, and ladders are installed inside for subsequent installation and disassembly of the columns. This facilitates the installation and adjustment of each column and support platform, ensuring that each column and support platform meets the levelness and dimensional requirements after installation.

[0064] The conversion column 44 connects the base column body 41 and the TF coil support frame 441. To facilitate the installation of lifting components such as the PF magnet, the conversion column 44 can raise the overall height of the central column body 40. The lower part of the conversion column 44 is designed with an inner flange, connected to the base column body 41 by bolts. The upper outer flange connects to the TF coil support frame 441. An internal ladder structure is provided for easy subsequent installation and disassembly. The base column body 41 is equipped with a support beam 43, and the conversion column 44 is equipped with the TF coil support frame 441, which supports the weight of the PF magnet and the TF coil, ensuring the stability of these lifting components during temporary placement. During installation, the TF coil support frame 441 needs to be adjusted based on on-site measurements or reverse-engineered to ensure its levelness and installation dimensions meet requirements. The TF coil support frame 441 consists of eight sector-shaped structures and is used to support jacks for adjusting the position of the inner TF coil after the SECTOR is installed.

[0065] The equatorial column 45 consists of two identical cylindrical cylinders. The adjacent equatorial columns 45 are connected by bolts, and each section of the equatorial column 45 is designed with a ladder for internal bolt connection.

[0066] The upper column 46 is equipped with a rotating support column 47 for the TF coil assembly, as well as bearings, locating pins, and locating pin clamps. The upper column 46 provides a support platform and positioning function for the SECTOR during hoisting. Its structure, featuring the rotating support column 47 and locating pins, is positioned vertically to ensure precise positioning during SECTOR installation. The rotating support column 47 can also be used for TF coil assembly. Together, these components allow the TF coil to be fitted onto non-standard SECTORs and adjusted to ensure the TF coil is installed in the designed position, guaranteeing final installation accuracy. A rotating bearing is designed at the top of the rotating support column 47, providing a rotation fulcrum for the TF coil assembly. The upper column 46 supports the working platform, facilitating the disassembly of the connecting rod between the lifting device and the SECTOR.

[0067] The central column assembly 1 for nuclear fusion devices designed according to the present invention is applicable to components that are large in size, heavy in weight, require high installation precision, have narrow installation space, and require assembly in a modular fashion. It can be used in nuclear fusion devices that require high precision and serve as a heavy-duty rotating fulcrum for the installation, adjustment, and positioning of TF coil assemblies, vacuum chambers, and vacuum chamber cold shields. The central column assembly 1 for nuclear fusion devices designed according to the present invention solves the problem of fixing and adjusting TF coil assemblies, vacuum chambers, and vacuum chamber cold shields using conventional column structures. Multiple separate columns can be pre-assembled using pins and keyways with clear position markings to ensure proper alignment during on-site installation, thus ensuring installation accuracy and efficiency.

[0068] In summary, the central column assembly 1 for a nuclear fusion device according to the present invention has a segmented structure for its central column body 40. The machining accuracy and positional accuracy of each segment can be designed individually according to actual conditions, resulting in high design accuracy of the central column. This is beneficial for the installation of various structures of the nuclear fusion device. Furthermore, each segment can be measured again after installation, providing data support for subsequent installations. After installation, each support platform can be adjusted or reverse-processed based on the measurement data to ensure accuracy requirements. The top of the central column body 40 can also serve as a rotation fulcrum, allowing some structures of the nuclear fusion device to be rotatably mounted on the top of the central column body 40 to adjust the position of these structures relative to the central column body 40 in the circumferential direction. The central column assembly 1 designed according to the present invention has higher accuracy, richer adjustment functions, and better structural reliability.

[0069] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above 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 one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0070] Although embodiments of the present invention have been shown and described above, variations, modifications, substitutions and alterations can be made to the above embodiments.

Claims

1. A central column assembly (1) for a nuclear fusion device, characterized in that, include: The main body (10) has a main body space (10a) formed inside it. A Dewar base (20) is located at the bottom of the main body space (10a); The central column base plate (30) is located at the bottom of the Dewar base (20) and is leveled and connected to the main body (10); The central column body (40) has its bottom fixedly connected to the central column base plate (30) and its top has a rotatable rotating component. The central column body (40) is detachably connected to the Dewar base (20). The central column body (40) is constructed as at least two split columns in the axial direction, and at least two adjacent split columns are detachably connected. The central column body (40) includes: The bottom column (41) is provided with a boss (411) that extends radially into the bottom column (41) or radially outward. Shear block (42), the shear block (42) is formed with a receiving groove for receiving the boss (411), the receiving groove abutting against at least a portion of the surface of the boss (411) to restrict the circumferential movement of the bottom column (41); A conversion column (44) is provided on the top of the bottom column body (41), and a TF coil support frame (441) is provided on the conversion column (44). The conversion column (44) and the bottom column body (41) are detachably connected. The bottom of the base column (41) has a fixing ring (412) that protrudes radially. The fixing ring (412) is detachably connected to the center column base plate (30) by a plurality of pressure blocks spaced apart in the circumferential direction. An adjustment block (421) is provided on the shear block (42), and the adjustment block (421) abuts against at least one side wall of the boss (411) in the horizontal direction.

2. The central column assembly (1) for a nuclear fusion device according to claim 1, characterized in that, The outer periphery of the base column (41) is provided with a plurality of radially extending support beams (43), the free ends of which are connected to the Dewar base (20) for temporary support of the hoisting components.

3. The central column assembly (1) for a nuclear fusion device according to claim 2, characterized in that, The end of the support beam (43) is formed with a support leg (431) protruding in the height direction, and the end of the support leg (431) is provided with a leveling pad (432) for connecting with the Dewar base (20).

4. The central column assembly (1) for a nuclear fusion device according to claim 1, characterized in that, The TF coil support frame (441) is configured as a plurality of such frames spaced apart around the circumference of the conversion column (44), each of the TF coil support frames (441) being fan-shaped and the plurality of TF coil support frames (441) together defining an annular support platform.

5. The central column assembly (1) for a nuclear fusion device according to claim 1, characterized in that, The central column body (40) includes: Equatorial column (45), the equatorial column (45) is disposed on the top of the conversion column (44) and is detachably connected to the conversion column (44). The equatorial column (45) is constructed as a plurality of columns arranged sequentially in the axial direction, and two adjacent equatorial columns (45) are detachably connected. The upper column (46) is located at the top of the equatorial column (45), and a rotating support column (47) is provided at the top of the upper column (46), and the rotating component is provided on the rotating support column (47).

6. The central column assembly (1) for a nuclear fusion device according to claim 5, characterized in that, At least one of the base column (41), the conversion column (44), the equatorial column (45), and the upper column (46) is provided with a ladder inside.

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