Modular assembly method for superconducting feedline system of fusion device

Abstract

The application discloses a modular assembly method for a superconducting feeder system of a fusion device and belongs to the technical field of fusion devices. The method assembles the superconducting feeder system by using a superconducting feeder system assembly and installation integrated platform, and comprises the following steps: cleaning and appearance inspection; posture adjustment and fixation; measurement, position fitting, reverse processing of a core wire and precise butt joint of a cooling pipe of a superconducting joint; construction of a cleaning area, indium pressing and resistance testing, welding and testing of each cooling pipe; insulation winding and testing of the periphery of the cooling pipe; installation of insulation components, support components and cold screen jump pipes, welding and testing of the cold screen jump pipes; installation of a connecting pipe section, welding and testing of a current lead tank; comprehensive cleaning and packaging protection, and transportation to a hoisting preparation area. The application has the advantages of high adaptability, high installation precision and effective control of a clean environment.

Description

Technical Field

[0001] This invention relates to the field of fusion device technology, and more specifically to a modular assembly method for a superconducting feeder system of a fusion device. Background Technology

[0002] The superconducting feeder system of a fusion device is a key component connecting the superconducting magnet to the room-temperature power supply and cryogenic cooling system. It is primarily responsible for transmitting high current and cryogenic media, enabling the environmental transition from 4.5K ultra-low temperature (-269℃) to room temperature, and is considered the "lifeline" of the magnet system. Current installation processes for superconducting feeder systems mainly employ a component-by-component on-site hoisting and welding method. This involves hoisting the current lead tank, superconducting feeder elbow section, and superconducting feeder straight pipe section separately on-site, followed by on-site welding connections. The connection and insulation of each superconducting joint involve numerous disciplines, including hoisting and positioning, 3D measurement, reverse engineering and high-precision machining, mechanical assembly, welding, helium leak detection, thermal shock testing under liquid nitrogen, insulation winding, and AC / DC high-voltage testing, requiring extremely high levels of process control.

[0003] The existing technology has the following main technical problems:

[0004] Long construction period: Traditional on-site hoisting and welding process for components requires a large amount of welding work to be carried out on the construction site of the fusion device main unit 3000 hall. The connection and insulation construction of each superconducting joint involves multiple quality control steps, resulting in a huge amount of on-site work.

[0005] Controlling the clean environment is challenging: Fusion devices have extremely high cleanliness requirements. Superconducting coil installation must be carried out in a cleanroom with humidity controlled below 70% and cleanliness maintained at ISO 9 level. On-site welding processes can easily generate contaminants, making it difficult to meet the cleanliness requirements of the fusion device and affecting the cooling quality and lifespan of the feeders.

[0006] High frequency of radiographic testing: Multiple radiographic tests are required after on-site welding to ensure welding quality. The feeder system is a multi-pipe integrated structure, and each welded joint requires individual testing. To ensure testing accuracy, multiple batches and angles of testing are necessary, resulting in a high frequency of testing. This affects other on-site construction operations and increases construction costs and time.

[0007] Installation accuracy is difficult to guarantee: Traditional installation methods mainly rely on manual operation, which is inefficient and prone to installation errors. Especially when installing in confined spaces, the lack of suitable support structures makes internal components prone to tipping over or deforming during installation, increasing installation difficulty and safety hazards.

[0008] High risks in on-site operations: On-site component hoisting requires multiple hoisting operations, with a large amount of work at height. The feeder components are heavy and valuable, and are prone to shaking and collisions during hoisting, which can lead to deformation or damage to the components, resulting in high personnel safety risks.

[0009] Existing technologies also have significant limitations in the following aspects:

[0010] High technical complexity: Light welding alone includes different welding methods such as argon arc welding, vacuum brazing, tin soldering, and electron beam welding.

[0011] Quality control is challenging: the manufacturing tolerances of superconducting components need to be controlled at the sub-millimeter level, the interface accuracy needs to be controlled at the millimeter level, and the superconducting components need to meet the testing requirements such as insulation resistance and Paschen test under thousands of kilovolt AC / DC withstand voltage.

[0012] On-site assembly environment limitations: The space inside the fusion device factory is limited, and the assembly of the feeder system requires a high degree of cleanliness. Traditional assembly methods are prone to generating contaminants and may interfere with the main structure during the assembly process. In addition, the assembled platform is difficult to calibrate accurately, which affects the installation accuracy of the feeder.

[0013] Lack of standardized processes: The existing processes lack standardized modular pre-assembly procedures. The docking and welding of various components depend on the on-site working environment and are easily affected by contaminants, leading to welding defects, which further increases the frequency of flaw detection and rework costs, and extends the construction period. Summary of the Invention

[0014] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, one objective of this invention is to propose a modular assembly method for a superconducting feeder system of a fusion device, which offers high adaptability, a short construction cycle, high assembly quality and precision, and effective control of the clean environment.

[0015] According to an embodiment of the present invention, a modular assembly method for a superconducting feeder system of a fusion device is used to assemble the superconducting feeder system using an integrated assembly and installation platform for the fusion device superconducting feeder system. The integrated assembly and installation platform for the fusion device superconducting feeder system includes a base module, a main support frame module, an adapter interface module, and an adjustment module. The main support frame module includes a current lead tank frame and a feeder segment frame.

[0016] The assembly method includes the following steps:

[0017] S1: Clean the assembly area and perform a visual inspection on the components of the superconducting feeder system to be assembled and the integrated assembly and installation platform for the superconducting feeder system of the fusion device.

[0018] S2: Connect the current lead can to the current lead can frame, hoist the corrugated pipe and the corresponding required feed line segment to the corresponding section of the feed line segment frame, adjust the posture and fix it;

[0019] S3: Measure the metal components of the superconducting connectors between adjacent current lead cans and feeder segments, and between adjacent feeder segments; fit the position of each superconducting connector; reverse process the core wires and cooling tubes of each superconducting connector; and then perform precise docking.

[0020] S4: Construct a clean area for the integrated assembly and installation platform of the superconducting feeder system of the fusion device, perform indium voltage and resistance tests on the core wires of each superconducting connector, and then weld and inspect the cooling tubes of each superconducting connector.

[0021] S5: Perform insulation wrapping and testing on the outer periphery of the cooling tubes of each superconducting joint;

[0022] S6: Install insulating components, supporting components, and cold shield jumpers outside the insulating winding layer of each superconducting joint, and weld and inspect the cold shield jumpers at each superconducting joint;

[0023] S7: Install an outer tube outside the cold screen jumper tube of each of the superconducting joints, and weld and inspect the outer tube;

[0024] S8: The assembled superconducting feeder system and the integrated assembly and installation platform of the fusion device superconducting feeder system are thoroughly cleaned and sealed for protection, and then transferred to the hoisting preparation area.

[0025] The modular assembly method for the superconducting feeder system of the fusion device in this embodiment of the invention relies on a clean assembly area and combines it with an integrated platform for the assembly and installation of the superconducting feeder system of the fusion device. The current lead tank, corrugated pipe, corresponding feeder sections such as elbow sections, straight pipe sections and corresponding connecting pipe sections of the superconducting feeder system are supported. The modular pre-assembly is completed according to the standardized process of "pre-processing - pre-docking - welding - testing - packaging" to form a complete superconducting feeder system assembly.

[0026] The modular assembly method for the superconducting feeder system of the fusion device in this invention has the following advantages: First, it achieves modular decomposition and recombination: the complex superconducting feeder system is manufactured into standardized modular components, such as current lead canisters, straight pipe sections, elbow sections, and corrugated pipes, etc., and precise docking and assembly of each modular component are achieved through special tooling. This method transforms the complex on-site assembly work in the main unit hall into modular production in the assembly area, significantly reducing on-site work, shortening the construction cycle, and improving assembly accuracy and efficiency. Second, it achieves clean environment control: by establishing a standardized clean assembly area, environmental parameters such as temperature, humidity, and dust particles are strictly controlled to ensure the cleanliness of the pre-assembly process. Third, it achieves standardized process flow: most of the traditional on-site installation work in the main unit hall is transferred to the clean environment of the assembly area for pre-assembly, establishing a standardized process of "pre-treatment - pre-docking - welding - inspection - packaging". Each link has clear operating specifications and quality standards, and the standardized process ensures the consistency of product quality and reduces reliance on manual experience. Fourth, it achieves effective quality control: through inspection in each step, early detection and timely handling of quality problems are achieved. Fifth, by comprehensively encapsulating and protecting the assembled superconducting feeder assembly, contamination and damage are prevented during subsequent transportation and storage, ensuring the product arrives on site in good quality condition. Sixth, it offers high adaptability: by employing the integrated assembly and installation platform for the fusion device's superconducting feeder system, it can be used to assemble different superconducting feeder systems, demonstrating strong applicability and flexible compatibility. Seventh, it helps reduce operational risks during on-site installation: During subsequent on-site installation, the use of the integrated assembly and installation platform allows for the overall hoisting of the superconducting feeder system assembly, reducing the number of hoisting operations and lowering safety risks.

[0027] In some embodiments, step S2 specifically includes the following sub-steps:

[0028] S21: Perform measurement and layout in the assembly area;

[0029] S22: Position the current lead can, assemble the current lead can frame and the corresponding adjustment module and adapter interface module on the current lead can frame, connect the current lead can to the adapter interface module on the current lead can frame, and adjust the position of the current lead can through the corresponding adjustment module.

[0030] S23: Assemble the base module, the feeder segment frame, and the corresponding adjustment module and adapter interface module on the feeder segment frame; hoist the corrugated pipe and the corresponding required feeder segment to the corresponding section of the feeder segment frame, adjust the posture through the corresponding adjustment module, and fix the corresponding feeder segment through the corresponding adapter interface module.

[0031] In some embodiments, step S3 further includes: before measuring the metal components of the superconducting connectors between adjacent current lead cans and feed segments, and between adjacent feed segments, accurately measuring and fitting the actual positions of the Dewar assembly, the feed lines inside the Dewar assembly, and the positions of the various components of the superconducting feed system during the subsequent installation of the superconducting feed system in the main hall of the fusion device.

[0032] In some embodiments, in step S4, the cleanliness level of the clean area is ISO 9, the temperature of the clean area is controlled at 25±1℃, and the humidity of the clean area is controlled at <70% RH.

[0033] In some embodiments, the cleaning area is a sealed space formed by a protective cover installed on the main support frame module, and the protective cover has pre-set openings for connecting the fresh air duct and the smoke exhaust duct; after the amount of dust in the air in the sealed space meets the requirements of ISO 9 level, the components in the sealed space are cleaned again.

[0034] In some embodiments, the enclosed space is provided with a transfer inlet / outlet, and the transfer inlet / outlet is equipped with an airtight door and an air shower buffer zone.

[0035] In some embodiments, in step S4, the specific steps of performing indium voltage and resistance tests on the core wires of each superconducting connector are as follows: first, perform indium voltage tests on the core wires of the superconducting connector in a concentrated manner, and then perform resistance tests on the indium voltage connectors of the core wires of the superconducting connector in a concentrated manner.

[0036] The specific steps for welding and inspecting the cooling tubes of each superconducting joint are as follows: first, the cooling tubes of the superconducting joint are welded together, and then the butt welds of the cooling tubes of the superconducting joint are inspected together.

[0037] In some embodiments, step S4, the centralized inspection of the butt weld of the cooling tube of the superconducting joint further includes: performing visual inspection, performing penetrant nondestructive testing, performing thermal shock testing, and performing helium leak detection in sequence.

[0038] In some embodiments, step S4, specifically includes: installing a flaw detection bracket on the integrated assembly and installation platform of the superconducting feeder system of the fusion device, constructing a flaw detection radiation protection room covering the integrated assembly and installation platform of the superconducting feeder system of the fusion device, conducting centralized radiographic flaw detection on the butt weld of the cooling pipe of the superconducting joint in batches and at different angles, and processing the welding defects found.

[0039] In some embodiments, step S5, the step of insulating and testing the outer periphery of the cooling tube of each superconducting connector, specifically includes: centrally insulating the superconducting connectors, then centrally performing AC / DC withstand voltage insulation tests, and then centrally performing Paschen tests.

[0040] In some embodiments, step S6, the step of welding and inspecting the cold screen jumpers at each of the superconducting joints, specifically involves: welding the cold screen jumpers at the superconducting joints in a concentrated manner, and then inspecting the butt welds of the cold screen jumpers at the superconducting joints in a concentrated manner.

[0041] In some embodiments, step S6, the centralized inspection of the butt weld of the cold screen jumper at the superconducting joint further includes: performing visual inspection, penetrant non-destructive testing, thermal shock testing, and helium leak detection in sequence.

[0042] In some embodiments, step S6, specifically includes: installing a flaw detection bracket on the integrated assembly and installation platform of the superconducting feeder system of the fusion device, constructing a flaw detection radiation protection room covering the integrated assembly and installation platform of the superconducting feeder system of the fusion device, conducting centralized radiographic flaw detection on the butt welds of the cooling jumpers of the superconducting joint in batches and at different angles, and processing the discovered welding defects.

[0043] In some embodiments, step S7 specifically includes: performing centralized welding between the corresponding connecting pipe segment and the outer pipe of the adjacent feeder segment, and between the corresponding connecting pipe segment and the adjacent current lead canister; and then performing non-destructive testing on the butt welds between the corresponding connecting pipe segment and the outer pipe of the adjacent feeder segment, and between the corresponding connecting pipe segment and the adjacent current lead canister.

[0044] 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

[0045] Figure 1 This is a schematic diagram of an integrated platform for assembling and installing the superconducting feeder system of a fusion device according to an embodiment of the present invention, which supports the superconducting feeder system.

[0046] Figure 2 This is a structural schematic diagram of the main support frame module, the adapter interface module, and the adjustment module according to an embodiment of the present invention;

[0047] Figure 3 This is a schematic diagram of a superconducting feeder system.

[0048] Figure 4 This is a schematic diagram of the current lead can frame structure according to an embodiment of the present invention;

[0049] Figure 5 This is a top view of the current lead can frame according to an embodiment of the present invention;

[0050] Figure 6 This is a side view of the current lead can frame according to an embodiment of the present invention;

[0051] Figure 7 This is a schematic diagram of the structure of the elbow section frame according to an embodiment of the present invention;

[0052] Figure 8 This is a schematic diagram of the structure of the first bolt adjusting mechanism and the first set screw adjusting mechanism in an embodiment of the present invention;

[0053] Figure 9 This is a schematic diagram of the structure of the second bolt adjusting mechanism, the screw adjusting mechanism, and the second set screw adjusting mechanism in an embodiment of the present invention;

[0054] Figure 10 This is an assembly diagram of the superconducting feeder system and the fusion device main unit completed using the assembly installation method of the superconducting feeder system of the fusion device according to an embodiment of the present invention.

[0055] Figure 11 This is a schematic diagram of the superconducting feeder system assembly completed at the pre-assembly site before the assembly installation method of the superconducting feeder system of the fusion device according to an embodiment of the present invention.

[0056] Figure 12 This is a schematic diagram of the fusion device factory layout in the prefabricated installation method of the superconducting feeder system of the fusion device according to an embodiment of the present invention.

[0057] Figure 13 This is a schematic diagram of an installation process in the assembled installation method of the superconducting feeder system of the fusion device according to an embodiment of the present invention;

[0058] Figure 14 This is a schematic diagram of an assembly process in the assembly method of the superconducting feeder system of the fusion device according to an embodiment of the present invention.

[0059] Figure Labels

[0060] The fusion device superconducting feeder system assembly and installation integrated platform 1000 includes: a base module 1; a base bottom connection part 101; a main support frame module 2; a current lead tank frame 201; a current lead tank side frame unit 2011; a cantilever bracket 20111; a sliding block 2012; an elbow section frame 202; an elbow section side frame unit 2021; an elbow section vertical beam 20211; an elbow section upper crossbeam 20212; an elbow section lower crossbeam 20213; a straight pipe section frame 203; a straight pipe section side frame unit 2031; a frame bottom connection part 204; an adapter interface module 3; a connecting lug 301; a roller support mechanism 302; a semi-circular circumferential mechanism 303; a U-shaped support mechanism 304; and a support base 3041. Arc plate 3042; clamping mechanism 305; semi-circular lower clamp 3051; semi-circular upper clamp 3052; adjustment module 4; bidirectional hydraulic cylinder telescopic module 401; hydraulic lifting mechanism 402; first bolt adjustment mechanism 403; support plate 4031; first bolt 4032; first screw 40321; first set screw adjustment mechanism 404; first base plate 4041; first side plate 4042; first set screw 4043; second bolt adjustment mechanism 405; second bolt 4051; second screw 4052; screw adjustment mechanism 406; fixing plate 4061; screw 4062; second set screw adjustment mechanism 407; second base plate 4071; second side plate 4072; second set screw 4073;

[0061] Superconducting feeder system 2000; current lead tank 210; lifting lug 211; cryogenic valve bracket 212; straight pipe section 221; connecting pipe section 222; elbow section 223; corrugated pipe section 224; corrugated pipe 2241; feeder system support block 230;

[0062] Fusion device main unit 3000; pre-installation hall 4000; main unit hall 5000; positioning support unit 510. Detailed Implementation

[0063] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated 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 intended to explain the present invention, and should not be construed as limiting the present invention.

[0064] The following is combined with Figures 1 to 14 This invention describes a modular assembly method for a superconducting feeder system of a fusion device according to an embodiment of the present invention.

[0065] like Figure 3 , Figure 10 and Figure 12As shown, the fusion device includes seven superconducting feeder systems 2000. Five of these superconducting feeder systems 2000 are located on the B2 level (the first basement level or the lowest level) of the main hall 5000 of the fusion device, one superconducting feeder system 2000 is located on the L2 level (the first floor above ground or the middle floor) of the main hall 5000 of the fusion device, and the other superconducting feeder system 2000 is located on the L3 level (the second floor above ground or the highest level) of the main hall 5000 of the fusion device. The seven superconducting feeder systems 2000 are supported on their respective positioning support parts 510 by their respective feeder system support blocks 230. Each superconducting feeder system 2000 includes a current lead tank 210, feeder sections, and connecting pipe sections 222. Specifically, for the superconducting feeder system 2000 at layer B2, between the current lead tank 210 and the fusion device main unit 3000, the elbow section 223, straight pipe section 221, and corrugated pipe section 224 are all feeder sections, and the three connecting pipe sections 222 are respectively connected between the current lead tank 210 and the elbow section 223, between the elbow section 223 and the straight pipe section 221, and between the straight pipe section 221 and the corrugated pipe section 224. For the superconducting feeder system 2000 at layer L2, between the current lead tank 210 and the fusion device main unit 3000, the elbow section 223, straight pipe section 221, and corrugated pipe section 224 are feeder sections. Between the current lead tank 210 and the fusion device main unit 3000, the straight pipe section 221 and the corrugated pipe section 224 are both feeder sections, and two connecting pipe sections 222 are respectively connected between the current lead tank 210 and the straight pipe section 221, and between the straight pipe section 221 and the corrugated pipe section 224; for the superconducting feeder system 2000 at the L3 layer, the straight pipe section 221, the elbow section 223, and the corrugated pipe section 224 are all feeder sections, and three connecting pipe sections 222 are respectively connected between the current lead tank 210 and the straight pipe section 221, between the straight pipe section 221 and the elbow section 223, and between the elbow section 223 and the corrugated pipe section 224. It should be further explained that the connecting pipe section 222 includes an outer pipe and a superconducting connector located inside the outer pipe; the bellows section 224 includes a bellows 2241 and an internal feeder pre-installed inside the Dewar of the self-fusion device main unit 3000, which leads outward and passes through the bellows 2241. The internal feeder and the bellows 2241 together form the bellows section 224.

[0066] The modular assembly method for the superconducting feeder system of the fusion device in this embodiment of the invention utilizes the following integrated assembly and installation platform 1000 to assemble the superconducting feeder system 2000, forming a superconducting feeder system assembly. Here, the superconducting feeder system assembly can be understood as: [e.g.,...] Figure 11 As shown, it consists of an integrated platform 1000 for assembling and installing the superconducting feeder system of the fusion device and a pre-assembled portion of the superconducting feeder system 2000. Figure 11In the pre-assembly section of the superconducting feeder system 2000, the corrugated pipe 2241 is installed at the corresponding position on the feeder frame, and the adjacent corrugated pipe 2241 and feeder section (such as...) Figure 11 The empty section between the straight pipe section 221 in the middle corresponds to the connecting pipe section 222 adjacent to the corrugated pipe 2241, which will be installed on-site in the main hall 5000 later. That is, the superconducting joint and the corresponding outer pipe between the corrugated pipe section 224 and the feeder section (such as the straight pipe section 221 of the superconducting feeder system 2000 of layer B2 or layer L2, or the elbow section 223 of layer L3) will be connected on-site in the main hall 5000 later.

[0067] To better understand the modular assembly method of the superconducting feeder system for the fusion device in this embodiment of the invention, the following is combined with... Figures 1 to 14 The following is a description of the 1000 integrated platform for assembling and installing the superconducting feeder system of the fusion device.

[0068] like Figures 1 to 14 As shown, the fusion device superconducting feeder system assembly and installation integrated platform 1000 of this embodiment includes a base module 1, a main support frame module 2, an adapter interface module 3, and an adjustment module 4.

[0069] The base module 1 has a base bottom connection part 101 at its bottom for connecting to a traveling mechanism (such as a swivel-wheeled ground tank) or to the foundation for the superconducting feeder system assembly site. The base module 1 is a modular structure. Based on the height design between the main support frame module 2 and the fusion device building, multiple base modules 1 are spaced apart below the main support frame module 2 along its length. Each base module 1 adopts a truss structure design, which can be welded from Q355 H-beams and steel plates to support the main support frame module 2 and the superconducting feeder system 2000. The base bottom connection part 101 is equipped with adjustable anchor bolts for horizontal adjustment of the main support frame module 2. Bolt connection holes are provided on the upper surface of the base module 1 for connection with the main support frame module 2. The horizontal adjustment mechanism of the base module 1 adopts an ultra-thin hydraulic jack in conjunction with a pad. The ultra-thin hydraulic jack rests on the bottom crossbeam of the base module 1, and the pad is placed on the lower surface of the bottom connection part 101 of the base to achieve horizontal adjustment of the base module 1. The horizontal adjustment accuracy is 0.5mm, which can ensure that the overall horizontal error of the main support frame module 2 does not exceed 1mm.

[0070] The main support frame module 2 includes a current lead tank frame 201, an elbow section frame 202, and a straight pipe section frame 203, which respectively support the current lead tank 210, elbow section 223, and straight pipe section 221 in the superconducting feeder system 2000. The current lead tank frame 201, elbow section frame 202, and straight pipe section frame 203 are matched and selected according to different superconducting feeder systems 2000 and are detachably connected. The bottom of the current lead tank frame 201 and elbow section frame 202 are provided with a frame bottom connection part 204 for connecting to the walking mechanism or to the superconducting feeder system assembly site positioning foundation. The straight pipe section frame 203 is detachably supported on the top of the base module 1.

[0071] The main support frame module 2 uses Q355 material H-beams, steel plates, and other profiles welded together as the main load-bearing components, connected by high-strength bolts. The main support frame module 2 is designed to bear a load of no less than 50 tons, with deformation controlled within 1mm. The main support frame module 2 is a multi-module design, where the current lead tank frame 201 supports the current lead tank 210, the elbow section frame 202 supports the elbow section 223, and the straight pipe section frame 203 supports the straight pipe section 221.

[0072] The current lead can frame 201, the elbow section frame 202, and the straight pipe section frame 203 are matched and detachably connected according to different superconducting feeder systems 2000. Here, it needs to be explained: Figure 10 The diagram illustrates the connection of seven superconducting feeder systems 2000 to the fusion device main unit 3000. Specifically, the five superconducting feeder systems 2000 on level B2 (i.e., the underground level or the lowest level) all have a structure where a straight pipe section 221 is connected to a bend section 223 via a connecting pipe section 222, and then connected to the current lead tank 210 via the bend section 223 and another connecting pipe section 222 (see diagram). Figure 1 , Figure 3 and Figure 10 ), accordingly, such as Figure 1 , Figure 2 and Figure 7 As shown, in the main support frame module 2, an elbow section frame 202 is used to connect the current lead tank frame 201 and the straight pipe section frame 203; a superconducting feeder system 2000 in the L2 layer (i.e., the ground floor or the middle floor) has a structure in which the straight pipe section 221 is directly connected to the current lead tank 210 through a connecting pipe section 222, without an elbow section 223 (as shown in the image). Figure 10In one of the superconducting feeder systems 2000, the current lead tank frame 201 and the straight pipe section frame 203 are directly connected in the main support frame module 2, eliminating the elbow section frame 202. In the L3 layer (i.e., the second floor above ground or the top floor) of the superconducting feeder system 2000, the straight pipe section 221 is located between the current lead tank 210 and the elbow section 223, while the elbow section 223 is located between the straight pipe section 221 and the fusion device main unit 3000. Accordingly, in the main support frame module 2, the straight pipe section frame 203 is connected between the current lead tank frame 201 and the elbow section frame 202.

[0073] Adjustable anchor bolts are provided at the bottom connection part 204 of the frame. The horizontal adjustment mechanism of the current lead tank frame 201 adopts an ultra-thin hydraulic jack with pads. The ultra-thin hydraulic jack is placed on the lifting connection part on the lower outer side of the current lead tank frame 201. The pads are placed on the lower surface of the bottom connection part 204 of the frame to realize the horizontal adjustment of the current lead tank frame 201. The horizontal adjustment accuracy is 0.5mm, which can ensure that the overall horizontal error of the main support frame module 2 does not exceed 1mm.

[0074] The adapter interface module 3 is detachably mounted on the current lead tank frame 201, the elbow section frame 202 and the straight pipe section frame 203 respectively, and is used to connect the current lead tank 210, the elbow section 223 and the straight pipe section 221 respectively, providing stable support.

[0075] Adjustment modules 4 are detachably mounted on the current lead can frame 201, elbow section frame 202, and straight pipe section frame 203, respectively, for correspondingly adjusting the positions of the current lead can 210, elbow section 223, and straight pipe section 221. Through adjustment modules 4, the positional errors of the current lead can 210, elbow section 223, and straight pipe section 221 can be controlled within ±1mm, and the angle within ±1°, ensuring precise alignment between them and reducing welding deviations.

[0076] The integrated assembly and installation platform 1000 for the superconducting feeder system of a fusion device is suitable for pre-assembling the superconducting feeder system 2000. The assembly method includes the following steps: cleaning the assembly area; cleaning and visually inspecting the superconducting feeder system 2000 to be assembled and the various components of the integrated assembly and installation platform 1000; connecting the current lead canister 210 to the current lead canister frame 201; and connecting the bellows 2241 and the corresponding required feeder sections (such as...). Figure 14 The straight pipe section 221 and the elbow section 223 are hoisted onto the corresponding sections of the feeder frame (such as the straight pipe section frame 203 and the elbow section frame 202), adjusted in position, and fixed; the adjacent current lead tank 210 and the feeder section (such as...) are then... Figure 14Between the bends 223 and adjacent feeder sections (such as...) Figure 14 The metal components of the superconducting joint (not shown in the figure) between the bend section 223 and the straight section 221 of the fusion device were measured. The positions of each superconducting joint were fitted, and the core wires and cooling tubes of each superconducting joint were reverse-machined before precise docking. A clean area was constructed on the 1000 integrated assembly and installation platform for the superconducting feeder system of the fusion device. Indium voltage and resistance tests were performed on the core wires of each superconducting joint. Then, the cooling tubes of each superconducting joint were welded and inspected. The outer periphery of the cooling tubes of each superconducting joint was insulated. Winding and testing; installing insulating components, supporting components, and cold shield jumpers on the outside of the insulating winding layer of each superconducting joint; welding and testing the cold shield jumpers at each superconducting joint; installing connecting pipe sections 222 on the outside of the cold shield jumpers of each superconducting joint; welding and testing the corresponding connecting pipe sections 222 with the outer pipes of the adjacent feeder sections and the corresponding connecting pipe sections 222 with the adjacent current lead tanks 210; thoroughly cleaning and sealing the assembled superconducting feeder system assembly, and transferring it to the hoisting preparation area of ​​the assembly area. Figure 11 The diagram illustrates the completed superconducting feeder system assembly (including the pre-assembled portion of the superconducting feeder system 2000 and the integrated assembly and installation platform 1000 for the fusion device's superconducting feeder system) at the assembly site, and... Figure 3 Compared to the schematic final superconducting feeder system of 2000, Figure 11 The pre-assembled section of the superconducting feeder system 2000, adjacent only to the corrugated pipe 2241, is used for the subsequent on-site installation of the connecting pipe section 222 in the main hall 5000 installation site. Figure 3 In the superconducting feeder system 2000 shown, only the connecting pipe section 222 adjacent to the corrugated pipe section 224 was installed at the main unit hall 5000 installation site.

[0077] The integrated assembly and installation platform 1000 for the fusion device's superconducting feeder system is also suitable as an installation platform for mounting the superconducting feeder system 2000 onto the main unit. The on-site installation method for the superconducting feeder system 2000 is based on the superconducting feeder system assembly; that is, in the assembly area, the pre-assembled portion of the superconducting feeder system 2000, pre-assembled on the integrated assembly and installation platform 1000, is installed. Within the superconducting feeder system assembly, only the empty section adjacent to the bellows 2241 is used for installing the connecting pipe section 222 at the main unit hall 5000 installation site. The installation method includes the following steps: The entire superconducting feeder system assembly (including the pre-assembled portion of the superconducting feeder system 2000 and the integrated assembly and installation platform 1000 for the fusion device's superconducting feeder system) is transported from the assembly site to the ground of the pre-assembly hall 4000, the ground (L3 level) of the main unit hall 5000, or the platform (L2 level) of the fusion device building; a traveling mechanism is installed at the bottom of the integrated assembly and installation platform 1000 for the fusion device's superconducting feeder system; the traveling mechanism transports and adjusts the superconducting feeder system assembly to the axis of the corresponding installation position, and then moves it towards the center position of the fusion device's main unit 3000, so that the superconducting feeder... The process involves aligning the foremost bellows 2241 of System 2000 with the Dewar window connector, inserting the pre-installed internal feeder into the bellows 2241, connecting the superconducting joints between adjacent bellows sections 224 and feeder sections, and positioning the feeder system support module onto the support base in the main hall 5000. A clean area is then constructed for the fusion device's superconducting feeder system assembly and installation integrated platform 1000. The superconducting joints between adjacent bellows sections 224 and feeder sections are connected, and an outer tube is installed at the superconducting joint between adjacent bellows sections 224 and feeder sections. Finally, the fusion device's superconducting feeder system assembly and installation integrated platform 1000 is dismantled.

[0078] The 1000 integrated platform for assembling and installing the superconducting feeder system of a fusion device, through its modular integrated design, is the first of its kind to propose the concept of an integrated platform for assembling and installing the superconducting feeder system of a fusion device. It integrates traditionally distributed installation equipment into a modular, unified platform. This platform not only enables precise docking of individual components but also allows for overall hoisting, solving the problems of dispersed equipment and low efficiency in traditional installation methods. The adjustment module 4 enables precise adjustment of individual components of the superconducting feeder system 2000, achieving an adjustment accuracy of ±1mm in position and ±1° in angle, meeting the stringent installation accuracy requirements of fusion devices. The adapter interface module 3 allows for quick replacement of adapters for different feeder component models. This design improves the platform's versatility and adaptability, reduces the number of specialized tooling fixtures, and lowers costs. After the superconducting feeder system 2000 is assembled onto the platform, it can be hoisted as a whole, replacing the traditional method of multiple hoisting of individual components. The 1000 integrated platform for assembling and installing the superconducting feeder system of the fusion device adopts a fully modular design, with each module connected through standard interfaces, allowing for flexible combination according to different installation requirements. The 1000 integrated platform for assembling and installing the superconducting feeder system of the fusion device is reusable, which greatly reduces tooling costs and improves economic efficiency.

[0079] The 1000 integrated platform for assembling and installing the superconducting feeder system of a fusion device has the following advantages over existing component-based installation processes:

[0080] First, it significantly shortens the construction cycle: the cumbersome processes of traditional on-site component hoisting, welding, and flaw detection are transferred to clean areas for pre-assembly, centralized welding, and centralized flaw detection, reducing on-site work and shortening the construction cycle by more than 50%. The overall hoisting technology replaces multiple hoisting of individual components, shortening the on-site construction cycle by more than 60%.

[0081] Secondly, it effectively controls cleanliness: assembly and welding are completed entirely in a clean area, avoiding contamination of components by the on-site environment, ensuring the cleanliness and cold quality of the feeder, and extending the feeder's service life. The 1000 integrated assembly and installation platform for the fusion device's superconducting feeder system has a regular structure, is easy to clean, and can be used with a cleaning protective cover.

[0082] Third, it helps reduce the frequency of radiographic testing: pre-welding in a clean environment combined with precise docking technology reduces the incidence of welding defects, and centralized testing replaces multiple individual testings on site, reducing the frequency of testing by more than 60% and lowering construction costs.

[0083] Fourth, it is beneficial to significantly improve the quality and installation accuracy of the superconducting feeder system 2000: the modular steel structure frame provides a stable benchmark, the adapter interface module 3 provides stable support for the superconducting feeder system 2000, and the adjustment module 4 enables millimeter-level attitude adjustment of each feeder component (i.e., current lead tank 210, straight pipe section 221, etc.), ensuring the precise docking of current lead tank 210, elbow section 223, and straight pipe section 221, reducing on-site welding deviations and defects, reducing the frequency of radiographic testing, making welding quality easy to control, highly repeatable, and adaptable to the modular assembly of different types of superconducting feeders.

[0084] Fifth, it helps reduce on-site operational risks: it significantly reduces the number of hoisting operations and the amount of high-altitude work, thereby reducing the risk of damage to various components of the superconducting feeder system 2000 and personnel safety risks.

[0085] Sixth, it is conducive to reducing costs: (1) Direct cost reduction: By reducing the amount of on-site work, reducing the frequency of flaw detection, and improving the utilization rate of materials, it is expected that the direct construction cost can be reduced by 30%-40%. The modular design realizes the reuse of the fusion device superconducting feeder system assembly and installation integrated platform 1000, which further reduces the tooling cost. (2) Construction period cost saving: The construction period is shortened by more than 50%, which means a significant reduction in indirect costs such as labor costs, equipment rental costs, and management costs. (3) Quality cost reduction: Through standardized processes and centralized quality control, rework and scrap rates are reduced, and quality costs are reduced. In particular, the costs of equipment damage and safety accidents caused by quality problems are avoided. (4) Operation and maintenance cost reduction: The installation accuracy and quality consistency are improved, the failure rate during equipment operation is reduced, and the operation and maintenance cost and downtime loss are reduced.

[0086] Seventh, it features a modular design, making it easy to match, assemble, and disassemble.

[0087] In summary, the integrated assembly and installation platform 1000 for the superconducting feeder system of the fusion device can support and adjust the modular components of the superconducting feeder system 2000, enabling precise docking, standardized pre-assembly, and overall hoisting installation of the components. This reduces the on-site installation and construction cycle in the main hall of the fusion device 3000, facilitates control of the clean environment, reduces the frequency of X-ray inspection, effectively ensures the quality and installation accuracy of the superconducting feeder system 2000, reduces on-site operational risks, and the integrated assembly and installation platform 1000 for the superconducting feeder system of the fusion device is reusable.

[0088] In some embodiments, such as Figure 4As shown, the current lead tank frame 201 is detachably assembled from multiple current lead tank side frame units 2011. This facilitates the disassembly of the current lead tank frame 201 after the superconducting feeder system 2000 is installed on the fusion device main unit 3000, and avoids interference between the current lead tank frame 201 and the external structure of the current lead tank 210 during the disassembly process.

[0089] In some embodiments, such as Figure 4 As shown, the current lead tank frame 201 is rectangular and is assembled from three detachable current lead tank side frame units 2011. Of the three current lead tank side frame units 2011, one is a U-shaped side frame unit, and the other two are L-shaped side frame units. This facilitates the disassembly of the current lead tank frame 201 after the superconducting feeder system 2000 is installed on the fusion device main unit 3000, preventing interference between the current lead tank frame 201 and the external structure of the current lead tank 210 during disassembly. Each of the two L-shaped side frame units has a cantilever bracket 20111 on its lower outer side, which is detachably connected to each other, jointly supporting the cryogenic valve frame 212 outside the current lead tank 210.

[0090] After the superconducting feeder system 2000 is finally installed in the main hall 5000, the adapter interface module 3 between the current lead tank 210 and the current lead tank frame 201 is disconnected, and then the connection between the three current lead tank side frame units 2011 of the current lead tank frame 201 is removed (e.g., high-strength bolt connection pairs). The current lead tank frame 201 can then be disassembled into three current lead tank side frame units 2011 on the outside of the current lead tank 210. After transportation and transfer to the assembly site, they can be reassembled using new high-strength bolt connection pairs for reuse.

[0091] In some embodiments, such as Figure 4 As shown, the adapter interface module 3 set on the current lead can frame 201 is specifically set on the upper crossbeams on the four sides of the current lead can frame 201, so that the current lead can 210 can be stably suspended in the current lead can frame 201.

[0092] In some embodiments, such as Figure 4 As shown, the adapter interface module 3 set on the current lead can frame 201 is specifically a connecting lug 301 set on the inner side of the sliding block 2012 on the upper crossbeam on the four sides of the current lead can frame 201, and the connecting lug 301 is connected to the lug 211 on the outer wall of the current lead can 210 (see...). Figure 3 (connected). For example, Figure 4 In the middle, there are four connecting lugs 301, which are respectively connected to the four lugs 211 on the outer wall of the current lead can 210 (see Figure 3The connection is convenient for installation and disassembly, which allows it to evenly bear the weight of the current lead can 210 and has a high load-bearing capacity.

[0093] In some embodiments, such as Figure 5 and Figure 6 As shown, the adjustment module 4 installed on the current lead tank frame 201 includes a bidirectional hydraulic cylinder telescopic module 401. The bidirectional hydraulic cylinder telescopic module 401 is respectively installed on the upper crossbeams on the four sides of the current lead tank frame 201 and connected to the corresponding sliding blocks 2012; the hydraulic lifting mechanism 402 is respectively abutted on the circumferentially spaced lifting connection parts on the lower outer side of the current lead tank frame 201.

[0094] The bidirectional hydraulic cylinder telescopic module 401 drives the sliding block 2012 to move horizontally along the upper crossbeam, facilitating the connection between the current lead can 210 and the connecting lug 301. Simultaneously, it allows for posture adjustment of the current lead can 210. The hydraulic lifting mechanism 402 is located at the circumferentially spaced lifting connection parts on the lower outer side of the current lead can frame 201. The hydraulic lifting mechanism 402 can adjust the level and height of the current lead can 210. The combined arrangement of the bidirectional hydraulic cylinder telescopic module 401 and the hydraulic lifting mechanism 402 enables precise adjustment of the position of the current lead can 210 with high accuracy.

[0095] In some embodiments, such as Figure 2 and Figure 7 As shown, the elbow section frame 202 includes two elbow section side frame units 2021 arranged in parallel with each other; each elbow section side frame unit 2021 includes an elbow section vertical beam 20211, an elbow section upper crossbeam 20212, and an elbow section lower crossbeam 20213, with the upper crossbeam 20212 and lower crossbeam 20213 located on one side of the elbow section vertical beam 20211. This allows the elbow section frame 202 to be disassembled into two elbow section side frame units 2021, making installation and disassembly convenient and efficient, while also facilitating transportation and subsequent maintenance.

[0096] In some embodiments, such as Figure 7 and Figure 8 As shown, the adapter interface module 3 set on the elbow section frame 202 includes a roller support mechanism 302 and a semi-circular encircling mechanism 303; the two ends of the roller support mechanism 302 are detachably set on the elbow section lower crossbeam 20213 of the two elbow section side frame units 2021, and are used to support the connecting pipe section 222 connected to the lower end of the elbow section 223 (see Figure 1 The semi-circular circumferential embracing mechanism 303 is detachably mounted on the other side of the vertical beam 20211 of the bend section of the two bend section side frame units 2021.

[0097] Specifically, multiple roller support mechanisms 302 are used to support the connecting pipe section 222 connected to the lower end of the elbow section 223. A semi-circular encircling mechanism 303 supports the vertical portion of the elbow section 223. The adjustable semi-circular encircling mechanism 303, in conjunction with the multiple roller support mechanisms 302, can encircle the outer wall of the elbow section 223 according to its central portion. With thick rubber padding to prevent scratches, it can support elbow sections 223 with diameters of 0.5-1.5 meters, achieving radial fixation of the elbow section 223. The semi-circular encircling mechanism 303 is connected to the elbow section vertical beam 20211 via bolts, allowing for quick and convenient disassembly. After the superconducting feeder system 2000 is finally installed in the main hall 5000, the height of the roller support mechanism 302 is lowered, the connection between the roller support mechanism 302 and the elbow section side frame unit 2021 is released, the semi-circular circumferential mechanism 303 is removed, and the elbow section side frame unit 2021 is removed. The various parts of the elbow section frame 202 that are removed can be reused.

[0098] In some embodiments, such as Figure 7 and Figure 8 As shown, the adjustment module 4 mounted on the elbow section frame 202 includes a first bolt adjustment mechanism 403. The first bolt adjustment mechanism 403 includes a support plate 4031 and a first bolt 4032. The two ends of the support plate 4031 are respectively connected to the lower crossbeams 20213 of the elbow section of the two elbow section side frame units 2021 via vertically extending first bolts 4032. The first screw 40321 of the first bolt 4032 passes through the support plate 4031, and the first nut of the first bolt 4032 (not shown in the figure) is supported on the lower surface of the support plate 4031. The roller support mechanism 302 is pivotally mounted on the upper side of the support plate 4031. By setting the first bolt adjustment mechanism 403, the height or tilt angle (pitch) of the support plate 4031 can be adjusted, thereby driving the roller support mechanism 302 to adjust synchronously, realizing precise adjustment of the position and posture of the connecting pipe section 222.

[0099] In some embodiments, such as Figure 8As shown, the adjustment module 4, mounted on the elbow section frame 202, also includes a first set screw adjustment mechanism 404. The first set screw adjustment mechanism 404 includes a first base plate 4041, first side plates 4042, and first set screws 4043. The first base plate 4041 is detachably connected to the other side of the elbow section vertical beam 20211. There are three first side plates 4042, fixed to the upper surface of the first base plate 4041. Two of the three first side plates 4042 are spaced apart and opposite each other, while the third first side plate 4042 is located at the outer end of the other two. The first base plate 4041 and the three first side plates 4042 are each provided with a first set screw 4043 perpendicular to itself. By setting the first set screw adjustment mechanism 404, the elbow section 223 can be precisely adjusted from three directions, achieving a positioning accuracy of ±1mm. After the posture adjustment is completed, the first set screw 4043 is pre-tightened to rigidly fix the elbow section frame 202 and the elbow section vertical beam 20211 to prevent displacement during subsequent installation.

[0100] In some embodiments, such as Figure 1 and Figure 2 As shown, the straight pipe section frame 203 includes two parallel straight pipe section side frame units 2031 that are detachably fixed to each other; the two straight pipe section side frame units 2031 are detachably connected to the top of the base module 1. Installation and disassembly are convenient and efficient, and also facilitate transportation and subsequent maintenance.

[0101] In some embodiments, such as Figure 2 As shown, the adapter interface module 3 set on the straight pipe section frame 203 includes a U-shaped support mechanism 304 and a clamping mechanism 305. The U-shaped support mechanism 304 is detachably and transversely set on the two straight pipe section side frame units 2031 and distributed at the corresponding sections of the straight pipe section frame 203, for corresponding support of each connecting pipe section 222 in the straight pipe section 221. The clamping mechanism 305 is detachably and transversely set on the two straight pipe section side frame units 2031 and distributed at the corresponding sections of the straight pipe section frame 203, respectively encircling and connecting to the upper end of the straight pipe section 221, the corrugated pipe section 224 or the elbow section 223, or respectively encircling and connecting to the straight pipe section 221 and the corrugated pipe section 224.

[0102] The U-shaped support mechanism 304 can support connecting pipe sections 222 of different diameters, and the adjustable clamping mechanism 305 can support elbow sections 223, straight pipe sections 221, and corrugated pipe sections 224 of different diameters. After the superconducting feeder system 2000 is installed in the main hall 5000, the U-shaped support mechanism 304 and the clamping mechanism 305 are loosened, and the connection between the two straight pipe section side frame units 2031 is released. The dismantled straight pipe section frame 203 can be transported to the assembly site for reuse.

[0103] In some embodiments, such as Figure 2 As shown, the U-shaped support mechanism 304 includes a support base 3041 and two arc-shaped plates 3042. The support base 3041 is detachably mounted transversely across the two straight pipe section side frame units 2031. The two arc-shaped plates 3042 are arranged on the support base 3041 to fit and support the outer surface of the connecting pipe section 222. Thick rubber pads are attached to the inner walls of the two arc-shaped plates 3042 to prevent scratching of the connecting pipe section 222. The two arc-shaped plates 3042 are in surface contact, resulting in high load-bearing rigidity, more uniform stress distribution, and prevention of localized deformation.

[0104] In some embodiments, such as Figure 2 As shown, the clamping mechanism 305 includes a semi-circular lower clamp 3051 and a semi-circular upper clamp 3052. The semi-circular lower clamp 3051 is detachably mounted across the two straight pipe section side frame units 2031, and the semi-circular upper clamp 3052 is detachably mounted on the semi-circular lower clamp 3051. The semi-circular lower clamp 3051 has a lower arc-shaped surface with its opening facing upwards, and the semi-circular upper clamp 3052 has an upper arc-shaped surface with its opening facing downwards. The semi-circular lower clamp 3051 can be installed first, then the straight pipe section 221 can be placed into the semi-circular lower clamp 3051, and finally the semi-circular upper clamp 3052 can be installed, making installation and disassembly more convenient.

[0105] In some embodiments, such as Figure 9 As shown, the adjustment module 4, mounted on the straight pipe section frame 203, includes a second bolt adjustment mechanism 405. The second bolt adjustment mechanism 405 includes second bolts 4051 distributed at both ends of the U-shaped support mechanism 304. The second screw 4052 of the second bolt 4051 passes through the base plate of the U-shaped support mechanism 304, and the lower end of the second screw 4052 rests against the straight pipe section side frame unit 2031. The second nut (not shown in the figure) of the second bolt 4051 supports the lower surface of the base plate of the U-shaped support mechanism 304. Thus, by rotating the second nut, the second screw 4052 moves up and down, thereby pushing the U-shaped support mechanism 304 to move vertically, precisely adjusting the vertical height of the U-shaped support mechanism 304 and ensuring accurate positional matching between the connecting pipe section 222, the straight pipe section 221, and the elbow section 223.

[0106] In some embodiments, such as Figure 9As shown, the adjustment module 4, mounted on the straight pipe section frame 203, also includes a screw adjustment mechanism 406. The screw adjustment mechanism 406 is positioned between the straight pipe section side frame unit 2031 and the clamping mechanism 305. It includes a fixing plate 4061 and a screw 4062. The fixing plate 4061 is fixed to the straight pipe section side frame unit 2031. The screw 4062 vertically passes through the fixing plate 4061 and is threadedly engaged with it. The top end of the screw 4062 rotatably rests against the limiting recesses (not shown in the figure) at both ends of the bottom of the clamping mechanism 305. When the screw 4062 is rotated, due to the thread engagement between the screw 4062 and the fixing plate 4061, the screw 4062 will rise and fall vertically, causing the clamping mechanism 305 to rise and fall synchronously, precisely adjusting the vertical height of the clamping mechanism 305.

[0107] In some embodiments, such as Figure 9 As shown, the adjustment module 4, mounted on the straight pipe section frame 203, also includes a second set screw adjustment mechanism 407. The second set screw adjustment mechanism 407 includes a second base plate 4071, second side plates 4072, and a second set screw 4073. The second base plate 4071 is mounted on the straight pipe section side frame unit 2031. There are three second side plates 4072, fixed to the upper surface of the second base plate 4071. Two of the three second side plates 4072 are spaced apart from each other, and one of the two side plates 4072 is located at the outer end of the other two. The second base plate 4071 and the three side plates 4072 are each provided with a second set screw 4073 perpendicular to itself. The second set screw adjustment mechanism 407 enables precise orientation adjustment of the straight pipe section 221 from three directions, achieving a positioning accuracy of ±1mm. After the orientation adjustment is completed, the second set screw 4073 is pre-tightened, and then the straight pipe section frame 203 and the straight pipe section side frame unit 2031 are rigidly fixed to prevent displacement during subsequent installation.

[0108] In some embodiments, the adjustment module 4 achieves a positioning accuracy of ±1mm and an angle adjustment accuracy of ±1°. Positioning accuracy refers to the positioning error of the component in height and horizontal position not exceeding ±1mm. Angle adjustment refers to the adjustment error of the component's installation angle not exceeding 1 degree; for example, the tilt angle adjustment accuracy of the hydraulic jacking mechanism 402 reaches ±1°.

[0109] In some embodiments, auxiliary function modules (not shown in the figure) are also included, including a measurement target, a safety protection and working platform, a cleaning protective cover, and a flaw detection auxiliary support. The measurement target is based on laser tracking measurement technology to establish a real-time feedback closed-loop control system. By setting the measurement target on the integrated platform 1000 for assembling and installing the superconducting feeder system of the fusion device, and then using a laser tracker to monitor the spatial pose of each component of the integrated platform 1000 in real time, the multi-dimensional adjustment mechanism is dynamically adjusted according to the measurement results to achieve millimeter-level installation accuracy. In summary, using a measurement target can improve processing accuracy, increasing the positional accuracy to ±0.01mm. The measurement target can also be quickly installed and disassembled, making it convenient to use. The safety protection system may include guardrails, fall arrestors, safety nets, etc., which can be installed on the main support frame module 2. The guardrail is 1.2 meters high, made of steel pipe, and has a load-bearing capacity of not less than 0.2KN. The working platform is made of checkered steel plate with an anti-slip coefficient of not less than 0.6 and can be installed on the main support frame module 2. The cleaning protective cover can be made of transparent PVC material, completely covering the welding area to prevent welding spatter from contaminating other components. It can be installed on the main support frame module 2. The cleaning protective cover can promptly remove welding fumes (using a dust extraction device). The flaw detection auxiliary bracket is movable and equipped with an installation interface and positioning device for the X-ray flaw detector, allowing for quick installation and adjustment of the flaw detection equipment's position, thus improving flaw detection efficiency. The modular assembly method of the superconducting feeder system for the fusion device according to an embodiment of the present invention is described in detail below.

[0110] like Figures 1 to 14 As shown, the modular assembly method for the superconducting feeder system of a fusion device according to an embodiment of the present invention assembles the superconducting feeder system 2000 using the aforementioned integrated assembly and installation platform 1000. The integrated assembly and installation platform 1000 includes a base module 1, a main support frame module 2, an adapter interface module 3, and an adjustment module 4. The main support frame module 2 includes a current lead tank frame 201 and a feeder section frame; wherein, the feeder section frame is obtained by matching and selecting a corresponding straight pipe section frame, or matching and selecting a straight pipe section frame and an elbow section frame, according to different superconducting feeder systems 2000.

[0111] The current lead tank frame 201, the elbow section frame 202, and the straight pipe section frame 203 are matched and detachably connected according to different superconducting feeder systems 2000. Here, it is necessary to explain the structural composition of the feeder section frame of the main support frame module 2: Figure 10The diagram illustrates the connection of seven superconducting feeder systems 2000 to the fusion device main unit 3000. Specifically, the five superconducting feeder systems 2000 on level B2 (i.e., the underground level or the lowest level) all have a structure where a straight pipe section 221 is connected to a bend section 223 via a connecting pipe section 222, and then connected to the current lead tank 210 via the bend section 223 and another connecting pipe section 222 (see diagram). Figure 10 ), accordingly, such as Figure 1 and Figure 2 As shown, in the main support frame module 2, an elbow section frame 202 is used to connect the current lead tank frame 201 and the straight pipe section frame 203. At this time, the elbow section frame 202 and the straight pipe section frame 203 together constitute the feeder section frame. A superconducting feeder system 2000 in the L2 layer (i.e., the ground floor or the middle floor) has a structure in which the straight pipe section 221 is directly connected to the current lead tank 210 through a connecting pipe section 222, without an elbow section 223 (such as...). Figure 10 In one of the superconducting feeder systems 2000, the main support frame module 2 uses a direct connection between the current lead tank frame 201 and the straight pipe section frame 203, eliminating the elbow section frame 202. In this case, the straight pipe section frame 203 constitutes the feeder section frame. In the L3 layer (i.e., the second floor above ground or the top floor) of the superconducting feeder system 2000, the straight pipe section 221 is located between the current lead tank 210 and the elbow section 223, while the elbow section 223 is located between the straight pipe section 221 and the fusion device main unit 3000. Correspondingly, in the main support frame module 2, the straight pipe section frame 203 is connected between the current lead tank frame 201 and the elbow section frame 202. In this case, the straight pipe section frame 203 and the elbow section frame 202 together constitute the feeder section frame.

[0112] The modular assembly method for the superconducting feeder system of a fusion device according to an embodiment of the present invention includes the following steps:

[0113] S1: Clean the assembly area and perform a clean and visual inspection of all components of the superconducting feeder system 2000 to be assembled and the integrated assembly and installation platform 1000 for the fusion device's superconducting feeder system. The installation of the superconducting feeder system 2000 requires extremely high cleanliness, and on-site welding can easily generate contaminants, affecting the cold quality and service life of the feeder. Therefore, the assembly area needs to be cleaned during the installation of the superconducting feeder system 2000, including controlling environmental humidity and cleanliness. To ensure the quality of the superconducting feeder system 2000, a visual inspection of all components of the superconducting feeder system 2000 to be assembled and the integrated assembly and installation platform 1000 for the fusion device's superconducting feeder system is required.

[0114] S2: As Figure 14As shown, the current lead can 210 is connected to the current lead can frame 201, and the corrugated pipe 2241 and the corresponding required feeder section are connected. Figure 14 The feeder segments (elbow segment 223 and straight pipe segment 221) are hoisted onto the corresponding sections of the feeder segment frame, adjusted in orientation, and fixed. This step is to ensure the precise docking of the corresponding connecting pipe segment 222 (including the superconducting connector of the connecting pipe segment) and to guarantee that the spatial positions of each module of the superconducting feeder system are consistent with the design.

[0115] S3: Measure the metal assemblies of the superconducting connectors between adjacent current lead canisters 210 and feeder segments, and between adjacent feeder segments. Fit the position of each superconducting connector, and reverse-machine the core wires and cooling tubes of each superconducting connector before precise docking. Measurement and fitting ensure the accurate installation of the metal assemblies of the superconducting connectors according to the pre-design requirements, and ensure precise docking of the superconducting connectors after reverse machining. Reverse machining refers to removing the machining allowance on the core wires and cooling tubes of the superconducting connectors according to the fitting results to facilitate subsequent precise docking.

[0116] S4: A clean area was constructed for the 1000 integrated platform for assembling and installing the superconducting feeder system of the fusion device. Indium voltage and resistance tests were performed on the core wires of each superconducting connector. Afterward, the cooling tubes of each superconducting connector were welded and inspected. The resistance test after indium voltage testing is to verify the resistance performance of the core wires. Ideally, the resistance of the superconducting connector should be close to zero. The cooling tubes are inspected after welding to ensure the welding quality of the cooling tubes.

[0117] S5: Perform insulation wrapping and testing on the outer periphery of the cooling tubes of each superconducting connector. Insulation wrapping and testing can improve the safety of the superconducting feeder system 2000.

[0118] S6: Install insulating components, supporting components, and cold screen jumpers outside the insulating winding layer of each superconducting joint. Weld and inspect the cold screen jumpers at each superconducting joint. After welding, inspect the cold screen jumpers to ensure the welding quality of the cold screen jumpers.

[0119] S7: Install the outer tube of the connecting pipe section 222 outside the cold screen jumper of each superconducting joint, weld and inspect the outer tube, thereby completing the connection of the connecting pipe sections between adjacent current lead tanks 210 and feeder sections, and between adjacent feeder sections. At this time, the connecting pipe section between the corrugated pipe 2241 and the corresponding feeder section is reserved for on-site installation in the main unit hall 5000. Thus, the superconducting feeder system assembly is obtained, which includes the integrated assembly and installation platform 1000 of the superconducting feeder system of the fusion device and the pre-assembled part of the superconducting feeder system 2000.

[0120] S8: The assembled superconducting feeder system 2000 and the integrated assembly and installation platform 1000 for the fusion device's superconducting feeder system are thoroughly cleaned and sealed for protection before being transferred to the hoisting preparation area. This comprehensive sealing and protection of the assembled superconducting feeder assembly prevents contamination and damage during subsequent transportation and storage, ensuring the product arrives on site in good condition.

[0121] The modular assembly method for the superconducting feeder system of the fusion device in this embodiment of the invention relies on a clean assembly area and combines it with the integrated assembly and installation platform 1000 for the superconducting feeder system of the fusion device. The current lead tank 210, the corrugated pipe 2241, the corresponding required feeder sections such as the elbow section 223, the straight pipe section 221, and the corresponding connecting pipe sections of the superconducting feeder system 2000 are supported. The modular pre-assembly is completed according to the standardized process of "pre-processing - pre-connection - welding - testing - packaging" to form a complete superconducting feeder system assembly.

[0122] The modular assembly method for the superconducting feeder system of the fusion device in this invention has the following advantages: First, it achieves modular decomposition and recombination: the complex superconducting feeder system 2000 is manufactured into standardized modular components, such as current lead canisters 210, straight pipe sections 221, elbow sections 223, and corrugated pipes 2241, etc., and precise docking and assembly of each modular component are achieved through special tooling. This method transforms the complex on-site assembly work of the traditional main hall 5000 into modular production in the assembly area, significantly reducing on-site work, shortening the construction cycle, and improving assembly accuracy and efficiency; Second, it achieves clean environment control: by establishing a standardized clean assembly area, environmental parameters such as temperature, humidity, and dust particles are strictly controlled to ensure the cleanliness of the pre-assembly process; Third, it achieves a standardized process flow: most of the traditional on-site installation work of the main hall 5000 is transferred to the clean environment of the assembly area for pre-assembly, establishing a "pre-treatment - pre-docking - welding - inspection - The standardized "packaging" process has clear operating procedures and quality standards at each stage, ensuring product quality consistency and reducing reliance on manual experience. Fourth, it achieves effective quality control: through testing at each step, quality problems are detected early and addressed promptly. Fifth, by comprehensively packaging and protecting the assembled superconducting feeder assembly, it prevents contamination and damage during transportation and storage, ensuring the product arrives on-site in good quality condition. Sixth, it offers high adaptability: by using the integrated assembly and installation platform 1000 for the fusion device's superconducting feeder system, it can be applied to the assembly of different superconducting feeder systems 2000, demonstrating strong applicability and flexibility. Seventh, it helps reduce on-site installation risks: during subsequent on-site installation, the use of the integrated assembly and installation platform 1000 allows for the overall hoisting of the superconducting feeder system assembly, reducing the number of hoisting batches and lowering safety risks.

[0123] In some embodiments, step S2 specifically includes the following sub-steps:

[0124] S21: Measurement and layout are carried out in the assembly area to provide accurate positioning and dimensional basis for the assembly of each component of the fusion device superconducting feeder system assembly and installation integrated platform 1000 and the superconducting feeder system 2000, so as to ensure the assembly accuracy of the fusion device superconducting feeder system assembly and installation integrated platform 1000 and the superconducting feeder system 2000.

[0125] S22: Position the current lead can 210, assemble the current lead can frame 201 and the corresponding adjustment module 4 and adapter interface module 3 on the current lead can frame 201, connect the current lead can 210 to the adapter interface module 3 on the current lead can frame 201, and adjust the position and orientation of the current lead can 210 through the corresponding adjustment module 4. In this way, the current lead can 210 is reliably assembled on the current lead can frame 201, and the position and orientation of the current lead can 210 and the current lead can frame 201 are accurate.

[0126] S23: Assemble the base module 1, the feeder segment frame, and the corresponding adjustment module 4 and adapter interface module 3 on the feeder segment frame; hoist the corrugated pipe 2241 and the corresponding required feeder segment onto the corresponding section of the feeder segment frame, adjust the posture using the corresponding adjustment module 4, and fix the corresponding feeder segment using the corresponding adapter interface module 3. In this way, the corrugated pipe 2241 and the corresponding required feeder segment are reliably assembled on the feeder segment frame, and the posture of the corrugated pipe 2241 and the corresponding required feeder segment and the feeder segment frame are accurate.

[0127] For example, such as Figure 14 As shown, the adapter interface module 3 is detachably mounted on the current lead can frame 201, the elbow section frame 202, and the straight pipe section frame 203, respectively, for correspondingly connecting the current lead can 210, the elbow section 223, and the straight pipe section 221. The adjustment module 4 is also detachably mounted on the same three frames, for correspondingly adjusting the positions of the current lead can 210, the elbow section 223, and the straight pipe section 221. Through the adjustment module 4, the positional error of the current lead can 210, the elbow section 223, and the straight pipe section 221 can be controlled within ±1mm, and the angle within ±1°, ensuring precise connection between them and reducing welding deviations.

[0128] In some embodiments, step S3 further includes: before measuring the metal components of the superconducting connectors between adjacent current lead tanks 210 and feeder segments, and between adjacent feeder segments, accurately measuring and fitting the actual positions of the Dewar assembly, the feeders inside the Dewar assembly, and the positions of each component of the superconducting feeder system 2000 during subsequent installation in the main hall 5000 of the fusion device, to determine the docking positions of the metal components of the superconducting connectors between adjacent current lead tanks 210 and feeder segments, and between adjacent feeder segments. This facilitates precise docking via the adjustment module 4 of the integrated assembly and installation platform 1000 for the fusion device's superconducting feeder system. This helps ensure the assembly accuracy of the superconducting feeder system 2000 during assembly at the assembly site, and also helps ensure the positional accuracy of the superconducting feeder system 2000 during subsequent on-site installation in the main hall 5000.

[0129] In some embodiments, in step S4, the cleanliness level of the clean area is ISO 9, the temperature of the clean area is controlled at 25±1℃, and the humidity of the clean area is controlled at <70% RH. Contaminants are easily generated during the welding process of the superconducting feeder system 2000. Meeting the cleanliness requirements of the fusion device in terms of cleanliness, temperature, and humidity control can improve the cooling quality and service life of the superconducting feeder system 2000.

[0130] In some embodiments, the clean area is a sealed space formed by a protective cover installed on the main support frame module 2. The protective cover has pre-set openings for connecting the fresh air duct and the exhaust duct. After the amount of dust in the air within the sealed space meets the requirements of ISO Class 9, all components within the sealed space are cleaned again. The protective cover can be made of 2mm thick PVC material. The fresh air duct can introduce clean air, and the exhaust duct can discharge welding fumes and volatile gases, achieving directional control of airflow within the sealed space. The purpose of this second cleaning is to remove contaminants that may have adhered during the installation of the protective cover.

[0131] In some embodiments, the enclosed space is equipped with a transfer entrance / exit, which is equipped with a sealed door and an air shower buffer zone. The sealed door and air shower buffer zone can intercept contaminants that may be carried by personnel / materials when entering or leaving the area, ensuring that the cleanliness of the clean area is not compromised.

[0132] In some embodiments, the specific steps of performing indium voltage and resistance tests on the core wires of each superconducting connector in step S4 are as follows: first, perform indium voltage tests on the core wires of the superconducting connectors in a concentrated manner, and then perform resistance tests on the indium voltage connectors of the core wires of the superconducting connectors in a concentrated manner. Performing indium voltage and resistance tests on the core wires of the superconducting connectors in a concentrated manner can ensure the efficiency and quality of the core wire connection.

[0133] The specific steps for welding and inspecting the cooling tubes of each superconducting joint are as follows: first, the cooling tubes of the superconducting joints are welded centrally, and then the butt welds of the cooling tubes of the superconducting joints are inspected centrally. Through centralized welding and centralized inspection, quality problems can be detected early and dealt with in a timely manner.

[0134] In some embodiments, step S4, the centralized inspection of the butt weld of the cooling tube of the superconducting joint further includes: sequentially performing visual inspection, centralized penetrant nondestructive testing, centralized thermal shock testing, and centralized helium leak detection. Visual inspection: Observing the weld surface for macroscopic defects such as cracks, porosity, and lack of fusion with the naked eye or endoscope; Penetrant nondestructive testing: Applying penetrant and using a developer to reveal minute surface opening defects; Thermal shock testing: Cyclicly impacting the weld between 80K (liquid nitrogen temperature) and room temperature to verify the weld's crack resistance at low temperatures; Helium leak detection: Filling the cooling tube with helium and detecting the leak rate using a mass spectrometer leak detector, requiring a leak rate less than [value missing]. This confirms the sealing performance. Centralized testing enables early detection and timely handling of quality issues, and also improves testing efficiency.

[0135] In some embodiments, step S4, specifically the centralized radiographic testing, further includes: installing a flaw detection bracket on the integrated assembly and installation platform 1000 of the fusion device's superconducting feeder system; constructing a radiation protection chamber covering the integrated assembly and installation platform 1000 of the fusion device's superconducting feeder system; conducting centralized radiographic testing on the butt welds of the cooling pipes of the superconducting joint in batches and at different angles; and addressing any welding defects found. Installing the flaw detection bracket improves operational convenience and safety, and the centralized radiographic testing in batches and at different angles achieves high accuracy.

[0136] By centralizing welding and flaw detection, quality problems can be detected and addressed at an early stage. Centralized flaw detection replaces the traditional multiple individual flaw detections, significantly reducing the frequency of flaw detection and improving quality control efficiency.

[0137] In some embodiments, step S5, which involves insulating and testing the outer periphery of the cooling tubes of each superconducting connector, specifically includes: centrally insulating the superconducting connectors, then centrally performing AC / DC withstand voltage insulation tests, and finally centrally performing Paschen tests. This ensures the reliable electrical performance of the superconducting connectors, and centralized operation improves efficiency.

[0138] In some embodiments, step S6, which involves welding and inspecting the cold shield jumpers at each superconducting joint, specifically involves: centrally welding the cold shield jumpers at the superconducting joints, and then centrally inspecting the butt welds of the cold shield jumpers at the superconducting joints. Centralized welding and inspection allow for timely handling of quality problems at an early stage. Centralized inspection replaces traditional multiple individual flaw detections, significantly reducing the frequency of flaw detection and improving quality control efficiency.

[0139] In some embodiments, step S6, the centralized inspection of the butt weld of the cold shield jumper at the superconducting joint further includes: sequentially performing visual inspection, centralized penetrant nondestructive testing, centralized thermal shock testing, and centralized helium leak detection. Visual inspection: Observing the weld surface for macroscopic defects such as cracks, porosity, and lack of fusion with the naked eye or endoscope; Penetrant nondestructive testing: Applying penetrant and using a developer to reveal minute surface opening defects; Thermal shock testing: Cyclicly impacting the weld between 80K (liquid nitrogen temperature) and room temperature to verify the weld's crack resistance at low temperatures; Helium leak detection: Filling the cooling pipe with helium and detecting the leak rate using a mass spectrometer leak detector, requiring a leak rate less than [value missing]. This confirms the sealing performance. Centralized testing enables early detection and timely handling of quality issues, and also improves testing efficiency.

[0140] In some embodiments, step S6, specifically the centralized radiographic testing, further includes: installing a flaw detection bracket on the integrated assembly and installation platform 1000 of the fusion device's superconducting feeder system; constructing a radiation protection chamber covering the integrated assembly and installation platform 1000; performing centralized radiographic testing on the butt welds of the cooling jumpers of the superconducting joints in batches and at different angles; and addressing any welding defects found. Installing the flaw detection bracket improves operational convenience and safety, and the centralized radiographic testing in batches and at different angles achieves high accuracy.

[0141] By centralizing welding and flaw detection, quality problems can be detected and addressed at an early stage. Centralized flaw detection replaces the traditional multiple individual flaw detections, significantly reducing the frequency of flaw detection and improving quality control efficiency.

[0142] In some embodiments, step S7 specifically includes: centrally welding the corresponding connecting pipe segment 222 to the outer pipe of the adjacent feeder segment, and the corresponding connecting pipe segment 222 to the adjacent current lead tank 210; then, centrally performing non-destructive testing on the butt welds between the corresponding connecting pipe segment 222 and the outer pipe of the adjacent feeder segment, and between the corresponding connecting pipe segment 222 and the adjacent current lead tank 210. Centralized operations improve work efficiency.

[0143] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A modular assembly method for a superconducting feeder system of a fusion device, characterized in that, The superconducting feeder system of the fusion device is assembled using the integrated assembly and installation platform. The integrated assembly and installation platform includes a base module, a main support frame module, an adapter interface module, and an adjustment module. The main support frame module includes a current lead tank frame and a feeder section frame. The assembly method includes the following steps: S1: Clean the assembly area and perform a visual inspection on the components of the superconducting feeder system to be assembled and the integrated assembly and installation platform for the superconducting feeder system of the fusion device. S2: Connect the current lead can to the current lead can frame, hoist the corrugated pipe and the corresponding required feed line segment to the corresponding section of the feed line segment frame, adjust the posture and fix it; S3: Measure the metal components of the superconducting connectors between adjacent current lead cans and feeder segments, and between adjacent feeder segments; fit the position of each superconducting connector; reverse process the core wires and cooling tubes of each superconducting connector; and then perform precise docking. S4: Construct a clean area for the integrated assembly and installation platform of the superconducting feeder system of the fusion device, perform indium voltage and resistance tests on the core wires of each superconducting connector, and then weld and inspect the cooling tubes of each superconducting connector. S5: Perform insulation wrapping and testing on the outer periphery of the cooling tubes of each superconducting joint; S6: Install insulating components, supporting components, and cold shield jumpers outside the insulating winding layer of each superconducting joint, and weld and inspect the cold shield jumpers at each superconducting joint; S7: Install connecting pipe sections outside the cold screen jumper tubes of each superconducting joint, and weld and inspect the connecting pipe sections to the outer tubes of the adjacent feeder sections or to the adjacent current lead tanks; S8: The pre-assembled part of the superconducting feeder system and the integrated assembly and installation platform of the superconducting feeder system of the fusion device are thoroughly cleaned and sealed for protection, and then transferred to the hoisting preparation area.

2. The modular assembly method for the superconducting feeder system of a fusion device according to claim 1, characterized in that, Step S2 specifically includes the following sub-steps: S21: Perform measurement and layout in the assembly area; S22: Position the current lead can, assemble the current lead can frame and the corresponding adjustment module and adapter interface module on the current lead can frame, connect the current lead can to the adapter interface module on the current lead can frame, and adjust the position of the current lead can through the corresponding adjustment module. S23: Assemble the base module, the feeder segment frame, and the corresponding adjustment module and adapter interface module on the feeder segment frame; hoist the corrugated pipe and the corresponding required feeder segment to the corresponding section of the feeder segment frame, adjust the posture through the corresponding adjustment module, and fix the corresponding feeder segment through the corresponding adapter interface module.

3. The modular assembly method for the superconducting feeder system of a fusion device according to claim 1, characterized in that, Step S3 further includes: before measuring the metal components of the superconducting connectors between adjacent current lead cans and feed segments, and between adjacent feed segments, accurately measuring and fitting the actual positions of the Dewar assembly, the feed lines inside the Dewar assembly, and the positions of each component of the superconducting feed system during the subsequent installation of the superconducting feed system in the main hall of the fusion device.

4. The modular assembly method for the superconducting feeder system of a fusion device according to claim 1, characterized in that, In step S4, the cleanliness level of the clean area is ISO 9, the temperature of the clean area is controlled at 25±1℃, and the humidity of the clean area is controlled at <70% RH.

5. The modular assembly method for the superconducting feeder system of a fusion device according to claim 4, characterized in that, The cleaning area is a sealed space formed by a protective cover installed on the main support frame module. The protective cover has pre-set openings for connecting the fresh air duct and the smoke exhaust duct. After the amount of dust in the air in the sealed space meets the requirements of ISO 9 level, the components in the sealed space are cleaned again.

6. The modular assembly method for the superconducting feeder system of a fusion device according to claim 5, characterized in that, The enclosed space is equipped with a transfer entrance / exit, which is equipped with a sealed door and an air shower buffer zone.

7. The modular assembly method for the superconducting feeder system of a fusion device according to claim 4, characterized in that, In step S4, the specific steps for performing indium voltage and resistance tests on the core wires of each superconducting connector are as follows: first, perform indium voltage tests on the core wires of the superconducting connectors in a concentrated manner, and then perform resistance tests on the indium voltage connectors of the core wires of the superconducting connectors in a concentrated manner. The specific steps for welding and inspecting the cooling tubes of each superconducting joint are as follows: first, the cooling tubes of the superconducting joint are welded together, and then the butt welds of the cooling tubes of the superconducting joint are inspected together.

8. The modular assembly method for the superconducting feeder system of a fusion device according to claim 7, characterized in that, In step S4, the centralized inspection of the butt weld of the cooling tube of the superconducting joint further includes: conducting visual inspection, conducting penetrant non-destructive testing, conducting thermal shock testing, and conducting helium leak detection in sequence.

9. The modular assembly method for the superconducting feeder system of a fusion device according to claim 8, characterized in that, In step S4, the centralized non-destructive testing further includes: installing a flaw detection bracket on the integrated assembly and installation platform of the superconducting feeder system of the fusion device, building a radiation protection chamber for flaw detection covering the integrated assembly and installation platform of the superconducting feeder system of the fusion device, conducting centralized radiographic flaw detection on the butt welds of the cooling pipes of the superconducting joint in batches and at different angles, and processing the welding defects found.

10. The modular assembly method for the superconducting feeder system of a fusion device according to claim 1, characterized in that, In step S5, the steps of insulating and testing the outer periphery of the cooling tubes of each superconducting connector specifically include: centrally insulating the superconducting connectors, then centrally conducting AC / DC withstand voltage insulation tests, and then centrally conducting Paschen tests.

11. The modular assembly method for the superconducting feeder system of a fusion device according to claim 1, characterized in that, In step S6, the specific steps of welding and inspecting the cold screen jumpers at each of the superconducting joints are as follows: welding the cold screen jumpers at the superconducting joints in a concentrated manner, and then inspecting the butt welds of the cold screen jumpers at the superconducting joints in a concentrated manner.

12. The modular assembly method for the superconducting feeder system of a fusion device according to claim 11, characterized in that, In step S6, the centralized inspection of the butt weld of the cold screen jumper at the superconducting joint further includes: performing visual inspection, penetrant non-destructive testing, thermal shock testing, and helium leak detection in sequence.

13. The modular assembly method for the superconducting feeder system of a fusion device according to claim 12, characterized in that, In step S6, the centralized non-destructive testing further includes: installing a flaw detection bracket on the integrated assembly and installation platform of the superconducting feeder system of the fusion device, building a flaw detection radiation protection room covering the integrated assembly and installation platform of the superconducting feeder system of the fusion device, conducting centralized radiographic flaw detection on the butt welds of the cooling jumpers of the superconducting joint in batches and at different angles, and processing the welding defects found.

14. The modular assembly method for the superconducting feeder system of a fusion device according to claim 1, characterized in that, Step S7 specifically includes: performing centralized welding between the corresponding connecting pipe segment and the outer pipe of the adjacent feeder segment, and between the corresponding connecting pipe segment and the adjacent current lead canister; and then performing non-destructive testing on the butt welds between the corresponding connecting pipe segment and the outer pipe of the adjacent feeder segment, and between the corresponding connecting pipe segment and the adjacent current lead canister.

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