Method for assembling superconducting feeder system of fusion device

Abstract

This invention belongs to the field of fusion device technology and discloses a prefabricated installation method for a superconducting feeder system of a fusion device. The method includes: digital pre-assembly; pre-processing the superconducting feeder system assembly and transporting it to the fusion device facility; installing a walking mechanism; transporting and adjusting the superconducting feeder system assembly to the corresponding installation position on the axis of the main unit hall, then moving it towards the center of the main unit, aligning the corrugated pipe with the Dewar window connector, inserting the internal feeder into the corrugated pipe to form a corrugated pipe segment, overlapping the superconducting joints between adjacent corrugated pipe segments and feeder segments, and positioning the superconducting feeder system onto the positioning support; constructing a clean area; connecting the superconducting joints between adjacent corrugated pipe segments and feeder segments and installing the outer pipe; and dismantling the integrated assembly and installation platform for the fusion device's superconducting feeder system. This invention offers a short on-site installation cycle, a controllable clean environment, low frequency of X-ray inspection, and low on-site operational risks, ensuring installation quality and accuracy.

Description

Technical Field

[0001] This invention relates to the field of fusion device technology, and in particular to an assembly installation 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 (referred to as elbow section), and superconducting feeder straight pipe section (referred to as straight pipe section) separately on the construction site, followed by on-site welding connections. The connection and insulation construction of each superconducting joint involves 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-site in the main hall of the fusion device. 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 installation 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 accuracy of the feeder installation. Summary of the Invention

[0013] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, one objective of this invention is to propose a prefabricated installation method for a superconducting feeder system of a fusion device, which can reduce the on-site installation and construction cycle in the main hall of the fusion device, facilitate the control of the clean environment, reduce the frequency of X-ray flaw detection, effectively ensure the quality and installation accuracy of the superconducting feeder system, and reduce on-site operational risks.

[0014] According to an embodiment of the present invention, the prefabricated installation method for a superconducting feeder system of a fusion device is based on the installation of a superconducting feeder system assembly formed by assembling the superconducting feeder system at the assembly site 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 and a main support frame module. The main support frame module includes a current lead tank frame that carries the current lead tank and a feeder frame that carries the corrugated pipe section, connecting pipe section, and corresponding feeder section. The feeder frame is detachably connected to the current lead tank frame and detachably supported on the base module. In the superconducting feeder system, only the connecting pipe section adjacent to the corrugated pipe section is to be installed on-site.

[0015] The installation method includes the following steps:

[0016] S1: Conduct digital pre-assembly, transportation and installation planning, and determine hoisting parameters, attitude adjustment sequence and transportation route;

[0017] S2: Preprocessing the superconducting feeder system assembly;

[0018] S3: Transport the superconducting feeder system assembly from the assembly site to the floor of the pre-assembly hall of the fusion device building, or the platform or floor of the main unit hall of the fusion device building;

[0019] S4: Install a walking mechanism on the integrated assembly and installation platform of the superconducting feeder system of the fusion device;

[0020] S5: The traveling mechanism transports and adjusts the superconducting feeder system assembly to the axis of the corresponding installation position, and then moves towards the center of the fusion device main unit, so that the bellows of the superconducting feeder system is aligned with the Dewar window connector, the pre-installed internal feeder is inserted into the bellows to form the bellows section, the superconducting joints between adjacent bellows sections and feeder sections overlap, and the superconducting feeder system assembly is positioned on the positioning support part of the main unit hall;

[0021] S6: Construct a clean area for the integrated assembly and installation platform of the superconducting feeder system of the fusion device;

[0022] S7: Connect the superconducting joint between the adjacent corrugated pipe section and the feeder section, and install the outer tube at the superconducting joint between the adjacent corrugated pipe section and the feeder section.

[0023] S8: Dismantle the integrated assembly and installation platform for the superconducting feeder system of the fusion device.

[0024] The prefabricated installation method for the superconducting feeder system of the fusion device in this invention has the following advantages over existing component-based installation processes: First, it ensures the installation accuracy and quality of the feeder system: Through a rigid, modular integrated platform for assembling and installing the superconducting feeder system of the fusion device, combined with closed-loop digital assembly technology, sub-millimeter-level installation accuracy is achieved, ensuring reliable connection of the feeder system interfaces; Second, it significantly shortens the construction cycle: The cumbersome processes of traditional on-site component hoisting, welding, and flaw detection are transferred to pre-assembly in a clean area, and overall transportation technology replaces multiple transportations of components, reducing the amount of on-site installation work in the main hall and shortening the on-site construction cycle by 60%. The advantages of the above are as follows: Thirdly, 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 superconducting feeder system, and extending the service life of the superconducting feeder; Fourthly, it reduces safety risks and improves safety: It provides stable support and working space for personnel and valuable components, hoisting the pre-assembled superconducting feeder assembly as a whole, avoiding the cumbersome operation of multiple hoisting of traditional components, reducing the number of hoisting operations and the risks of high-altitude operations, and avoiding shaking and accidental collisions during hoisting; Fifthly, it ensures the installation accuracy and quality of the feeder system; Sixthly, the installation method is replicable and standardized: The installation process, which relies on personnel experience, is transformed into a standardized and streamlined operation method, which is conducive to knowledge accumulation and quality control.

[0025] In some embodiments, step S1 includes the following sub-steps:

[0026] S101: Hoist the superconducting feeder system assembly onto the axle vehicle at the assembly site;

[0027] S102: The superconducting feeder system assembly is transferred from the assembly site to the pre-assembly hall of the fusion device plant by the axle vehicle.

[0028] S103: Transfer the superconducting feeder system assembly from the axle vehicle to the ground of the pre-assembly hall, the platform of the main unit hall, or the ground.

[0029] In some embodiments, step S1 specifically involves: based on the actual external dimensions of the superconducting feeder system assembly, the fusion device Dewar, the biological shielding wall, and the internal feeder, obtaining samples through three-dimensional scanning using a laser tracker, performing virtual simulation using computer software, determining the hoisting parameters and attitude adjustment sequence, and planning the transportation path.

[0030] In some embodiments, step S2 specifically involves: initial pose calibration of the superconducting feeder system assembly, secondary cleaning of the superconducting feeder system assembly and installation of the integrated measurement target, and cleaning and encapsulation of the superconducting feeder system assembly.

[0031] In some embodiments, step S101 specifically involves: at the assembly site, connecting a special lifting device to the superconducting feeder system assembly, connecting the special lifting device to the hoisting system at the assembly site, hoisting the superconducting feeder system assembly onto the axle vehicle, lowering the height of the special lifting device, positioning the special lifting device on the axle vehicle, and disconnecting the special lifting device from the hoisting system at the assembly site.

[0032] In some embodiments, step S102 specifically involves: the special lifting device being transported together with the superconducting feeder system assembly from the assembly site to the pre-assembly hall via the axle vehicle.

[0033] In some embodiments, step S103 specifically involves: connecting the special lifting device to the hoisting system at the fusion device building; if the superconducting feeder system is suitable for placement on the B2 floor of the main hall, then hoisting the superconducting feeder system assembly onto the ground of the pre-installation hall; if the superconducting feeder system is suitable for placement on the L2 or L3 floor of the main hall, then hoisting the superconducting feeder system assembly onto the platform of the corresponding L2 floor or the ground of the L3 floor.

[0034] In some embodiments, step S4 includes the following sub-steps:

[0035] S401: The superconducting feeder system assembly is lifted as a whole by a hydraulic lifting mechanism under the current lead tank and the base module;

[0036] S402: The walking mechanism is positioned below the current lead can and the base module respectively;

[0037] S403: The superconducting feeder system assembly is lowered as a whole by means of the hydraulic lifting mechanism until the superconducting feeder system assembly is fully positioned on the traveling mechanism, and the traveling mechanism is temporarily fixed to the superconducting feeder system assembly.

[0038] In some embodiments, step S5 includes the following sub-steps:

[0039] S501: The walking mechanism transports and adjusts the superconducting feeder system assembly to the axis of the corresponding installation position, and then moves it towards the center of the fusion device main unit.

[0040] S502: The movement is paused after the front end of the feeder frame is attached to the window wall of the biological shielding wall;

[0041] S503: Using a hydraulic jack to support the front end of the feeder frame between the front end of the feeder frame and the window wall of the biological shielding wall, remove the first base module and transfer the walking mechanism below the first base module to the front end of the feeder frame between the front end of the feeder frame and the window wall of the biological shielding wall. Depressurize the hydraulic jack and fix the walking mechanism at the window wall of the biological shielding wall to the front end of the feeder frame.

[0042] S504: The walking mechanism continues to move the superconducting feeder system assembly towards the center to the designated position and pauses the movement; supported by the hydraulic jack between the front end of the feeder frame and the biological shielding wall window, the walking mechanism located below the next base module is removed and transferred to the front end of the feeder frame and the biological shielding wall window. The hydraulic jack is depressurized, and the walking mechanism at the biological shielding wall window is fixed to the front end of the feeder frame. Then, the walking mechanism continues to move the superconducting feeder system assembly towards the center to the next designated position, and this process is repeated until all base modules are removed.

[0043] S505: The walking mechanism continues to move the superconducting feeder system assembly toward the center until the corrugated pipe at the front end of the superconducting feeder system assembly is aligned with the Dewar window connector, the pre-installed internal feeder is inserted into the corrugated pipe to form a corrugated pipe segment, and the superconducting joints between adjacent corrugated pipe segments and feeder segments are staggered and overlapped.

[0044] S506: The superconducting feeder system assembly is lifted by the hydraulic lifting mechanism and the hydraulic jack, all the walking mechanisms are removed, and the superconducting feeder system assembly is lowered by the hydraulic lifting mechanism and the hydraulic jack until the superconducting connector is connected, the bellows and the Dewar window connector are aligned, and the support block of the superconducting feeder system is positioned on the support base.

[0045] In some embodiments, step S501 specifically involves: if the superconducting feeder system is suitable for placement on the B2 floor, and the superconducting feeder system assembly is located on the ground of the prefabrication hall, the superconducting feeder system assembly is transported to the lifting platform by the walking mechanism, the lifting platform transports the superconducting feeder system assembly downwards to the B2 floor, the walking mechanism then transports the superconducting feeder system assembly to the vicinity of the corresponding installation position, the superconducting feeder system assembly is then adjusted to the axis of the corresponding installation position, and then moves towards the center position of the fusion device main unit;

[0046] If the superconducting feeder system is suitable for placement on layer L2 or layer L3, the traveling mechanism directly transports and adjusts the superconducting feeder system assembly to the axis of the corresponding installation position, and then moves it towards the center of the fusion device main unit.

[0047] In some embodiments, in step S6, 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.

[0048] 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.

[0049] 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.

[0050] In some embodiments, step S7 includes the following sub-steps:

[0051] S701: Perform indium voltage and resistance tests on the core wire of the superconducting connector, and then weld and inspect the cooling tube of the superconducting connector;

[0052] S702: Perform insulation wrapping and inspection on the outer periphery of the cooling tube of the superconducting joint;

[0053] S703: Install insulating components, supporting components, and cold shield jumpers outside the insulating winding layer of the superconducting joint, and weld and inspect the cold shield jumpers at the superconducting joint;

[0054] S704: Install a connecting pipe outside the cold screen jumper of the superconducting connector, and weld and inspect the connecting pipe to the corrugated pipe and the connecting pipe to the outer pipe of the feeder section.

[0055] In some embodiments, in step S701, the indium bonding resistance of the core wire of the superconducting connector is required to be no greater than 0.5 nanoohms; after the cooling tube of the superconducting connector is welded, visual inspection, non-destructive testing, thermal shock testing, and helium leak detection are required, with the helium leak detection requiring a leak rate of less than 1×10⁻⁶. -9 pa·m³ / s.

[0056] In some embodiments, in step S701, non-destructive testing is performed on the butt weld of the cooling pipe. Specifically, a flaw detection bracket is installed on the integrated assembly and installation platform of the superconducting feeder system of the fusion device, a flaw detection radiation protection room is built, and concentrated radiographic flaw detection is performed on the butt weld of the cooling pipe in batches and at different angles according to the principle of from the center outwards. The defects found are then processed.

[0057] In some embodiments, step S702 specifically involves: after insulating the outer periphery of the cooling tube of the superconducting connector, performing AC / DC withstand voltage insulation tests and Pascal tests.

[0058] In some embodiments, step S703 specifically involves: installing the insulating component, the supporting component, and the cold shield jumper in sequence from the inside to the outside of the insulating winding layer of the superconducting connector; then, performing visual inspection, penetration testing, and other non-destructive testing, as well as thermal shock testing, on the butt weld of the welded cold shield jumper; and finally, performing a helium leak detection test.

[0059] In some embodiments, in step S703, non-destructive testing is performed on the butt weld of the welded cold screen jumper tube. Specifically, a flaw detection bracket is installed on the integrated assembly and installation platform of the superconducting feeder system of the fusion device, a flaw detection radiation protection room is built, radiographic testing is performed on the butt weld of the welded cold screen jumper tube, and the defects found are processed.

[0060] 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

[0061] 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.

[0062] 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;

[0063] Figure 3 This is a schematic diagram of a superconducting feeder system.

[0064] Figure 4 This is a schematic diagram of the current lead can frame structure according to an embodiment of the present invention;

[0065] Figure 5 This is a top view of the current lead can frame according to an embodiment of the present invention;

[0066] Figure 6 This is a side view of the current lead can frame according to an embodiment of the present invention;

[0067] Figure 7 This is a schematic diagram of the structure of the elbow section frame according to an embodiment of the present invention;

[0068] 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;

[0069] 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;

[0070] 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.

[0071] 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.

[0072] 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.

[0073] Figure 13 This is a schematic diagram of an installation process in the assembly installation method of the superconducting feeder system of the fusion device according to an embodiment of the present invention.

[0074] Figure Labels

[0075] 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;

[0076] 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;

[0077] Fusion device main unit 3000; pre-assembly hall 4000; main unit hall 5000; positioning support unit 510; lifting platform 6000. Detailed Implementation

[0078] 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.

[0079] The following is combined with Figures 1 to 13 This invention describes the assembly installation method of the superconducting feeder system for a fusion device according to an embodiment of the present invention.

[0080] 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 and multiple feeder segments; wherein, for the superconducting feeder system 2000 at layer B2, between the current lead tank 210 and the fusion device main unit 3000, the multiple feeder segments are an elbow segment 223, a straight pipe segment 221, a corrugated pipe segment 224, and three connecting pipe segments 222, the three connecting pipe segments 222 connecting the current lead tank 210 and the elbow segment 223, connecting the elbow segment 223 and the straight pipe segment 221, and connecting the straight pipe segment 221 and the corrugated pipe segment 224; for the superconducting feeder system 2000 at layer L2, between the current lead tank 210 and the fusion device main unit 3000, the multiple feeder segments are an elbow segment 223, a straight pipe segment 221, a corrugated pipe segment 224, and three connecting pipe segments 222 connecting the current lead tank 210 and the fusion device main unit 3000. Between the 3000 superconducting feeder systems, multiple feeder segments are a straight pipe segment 221, a corrugated pipe segment 224, and two connecting pipe segments 222. The two connecting pipe segments 222 are connected between the current lead tank 210 and the straight pipe segment 221, and between the straight pipe segment 221 and the corrugated pipe segment 224. For the superconducting feeder system 2000 at the L3 layer, multiple superconducting feeder systems 2000 are a straight pipe segment 221, an elbow segment 223, a corrugated pipe segment 224, and three connecting pipe segments 222. The three connecting pipe segments 222 are connected between the current lead tank 210 and the straight pipe segment 221, between the straight pipe segment 221 and the elbow segment 223, and between the elbow segment 223 and the corrugated pipe segment 224. It should be further noted 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 a pre-installed, outwardly extended section that passes through the bellows 2241 within the Dewar of the self-fusion device main unit 3000 (see...). Figure 11 The internal feeder and the bellows 2241 together form the bellows section 224.

[0081] To better understand the assembled installation method of the superconducting feeder system for the fusion device according to embodiments of the present invention, the following is combined with... Figures 1 to 11 First, let me explain the 1000 integrated platform for assembling and installing the superconducting feeder system of the fusion device.

[0082] like Figures 1 to 11As 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.

[0083] 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.

[0084] 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 positioning foundation of the superconducting feeder system 2000 assembly site. The straight pipe section frame 203 is detachably supported on the top of the base module 1.

[0085] 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.

[0086] 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 10 In 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.

[0087] 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 base 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.

[0088] 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.

[0089] 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 frame 202, 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 the current lead can 210, elbow section 223, and straight pipe section 221 and reducing welding deviations.

[0090] 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 for the superconducting feeder system of the fusion device; connecting the current lead canister 210 to the current lead canister frame 201; and connecting the bellows 2241 and the corresponding required feeder segments ( Figure 11 The feeder segments (bend section 223 and straight pipe section 221) are hoisted to the corresponding sections of the feeder frame, adjusted in orientation, and fixed. Measurements are taken of the metal components of the superconducting connectors between adjacent current lead canisters 210 and feeder segments, and between adjacent feeder segments. The positions of each superconducting connector are fitted, and the core wires and cooling pipes of each superconducting connector are reverse-machined before precise docking. A clean area is constructed on the fusion device superconducting feeder system assembly and installation integrated platform 1000. Indium voltage and resistance tests are performed on the core wires of each superconducting connector. Finally, the cooling pipes of each superconducting connector are welded. The process involves several steps: Insulation wrapping and testing of the cooling pipes around each superconducting joint; installation of insulating components, support components, and cold shield jumpers on the outside of the insulation wrapping layer of each superconducting joint; welding and testing of the cold shield jumpers at each superconducting joint; installation of the outer pipe of the connecting pipe section 222 on the outside of the cold shield jumpers of each superconducting joint; welding and testing of the outer pipe; and thus completing the connection of the connecting pipe sections between adjacent current lead tanks 210 and feeder sections, and between adjacent feeder sections. At this point, the connecting pipe section 222 between the corrugated pipe 2241 and the corresponding feeder section is retained for on-site installation in the main unit hall 5000. This yields the superconducting feeder system assembly, which includes a superconducting feeder system assembly and installation integrated platform 1000 and a pre-assembled portion of the superconducting feeder system 2000. The assembled superconducting feeder system 2000 and the fusion device superconducting feeder system assembly and installation integrated platform 1000 are thoroughly cleaned and sealed for protection before being transported to the hoisting preparation 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.

[0091] The integrated assembly and installation platform 1000 for the superconducting feeder system of the fusion device is also suitable as an assembly and installation platform for installing 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, i.e., the pre-assembled part of the superconducting feeder system 2000 pre-assembled on the integrated assembly and installation platform 1000 of the fusion device in the assembly area. In the superconducting feeder system assembly, only the empty section adjacent to the bellows 2241 (see...) Figure 11 This is used for installing connecting pipe section 222 at the fusion device main hall 5000 installation site. The installation method includes the following steps: transporting the entire superconducting feeder system assembly (including the pre-assembled part of the superconducting feeder system 2000 and the integrated assembly and installation platform 1000 for the fusion device superconducting feeder system) from the assembly site to the ground of the pre-assembly hall 4000, the ground (L3 level) of the main hall 5000, or the platform (L2 level) of the fusion device plant; installing a traveling mechanism at the bottom of the integrated assembly and installation platform 1000 for the fusion device 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 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.

[0092] The 1000 integrated platform for assembling and installing superconducting feeder systems for fusion devices, through its modular integrated design, is the first to introduce the concept of an integrated platform for assembling and installing superconducting feeder systems for fusion devices. It integrates traditional distributed installation equipment into a modular, unified platform. This 1000 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. Through adjustment modules, precise adjustments of individual components of the numerous feeder systems can be achieved, with an adjustment accuracy of ±1mm in position and ±1° in angle, meeting the stringent installation precision requirements of fusion devices. Through the adapter interface module 3, adapter devices can be quickly replaced according to different models of feeder components. 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. Each module connects via standard interfaces and can be flexibly combined to meet different installation requirements. The 1000 integrated platform is reusable, significantly reducing tooling costs and improving economic efficiency.

[0093] 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:

[0094] 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%.

[0095] 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.

[0096] 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 testing on site, reducing the frequency of testing by more than 60% and lowering construction costs.

[0097] Fourth, it is beneficial to significantly improve the quality and installation accuracy of the superconducting feeder system 2000: a stable benchmark is provided by the modular steel structure frame, the superconducting feeder system 2000 is provided with stable support by the adapter interface module 3, and the millimeter-level attitude adjustment of each feeder component (i.e., current lead tank 210, straight pipe section 221, etc.) is achieved by the adjustment module, 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.

[0098] Fifth, it helps reduce on-site operation risks: it can significantly reduce 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.

[0099] 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.

[0100] Seventh, it features a modular design, making it easy to match, assemble, and disassemble.

[0101] 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.

[0102] 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.

[0103] 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.

[0104] After the superconducting feeder system 2000 is finally installed in the main hall, 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 (such as high-strength bolt connection pairs) is removed. Then, the current lead tank frame 201 can 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.

[0105] In some embodiments, such as Figure 4 As shown, the adapter interface module 3, which is 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.

[0106] 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, the connecting lug 301 has four lugs 211 respectively corresponding to the four lugs 211 on the outer wall of the current lead can 210 (see the above). Figure 3The connection is convenient for installation and disassembly, which allows for even distribution of the weight of the current lead can 210 and provides high load-bearing strength.

[0107] 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.

[0108] 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.

[0109] 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.

[0110] 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.

[0111] 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 part 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 middle part of the elbow section 223 according to its diameter. 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 by bolts, allowing for quick and convenient disassembly. After the superconducting feeder system 2000 is finally installed in the main hall, 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 disconnected, 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.

[0112] 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 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 (not shown in the figure) of the first bolt 4032 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, achieving precise adjustment of the position and orientation of the connecting pipe section 222.

[0113] 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.

[0114] 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.

[0115] 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 straight pipe section 221 and the corrugated pipe section 224 and the upper end of the elbow section 223, or respectively encircling and connecting to the straight pipe section 221 and the corrugated pipe section 224.

[0116] 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, 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.

[0117] 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 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 onto the outer surface of the corresponding connecting pipe section 222 supporting the straight pipe section 221. Thick rubber pads are attached to the inner walls of the two arc-shaped plates 3042 to prevent scratching the straight pipe section 221. 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.

[0118] 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.

[0119] 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.

[0120] 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.

[0121] 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, a second side plate 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 the third second side plate 4072 is located at the outer end of the other two. The second base plate 4071 and the three second 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.

[0122] In some embodiments, the adjustment module 4 achieves a positioning accuracy of ±1 mm and an angle adjustment accuracy of ±1°. Positioning accuracy refers to the positioning error of the component in height and horizontal position not exceeding 1 mm. 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°.

[0123] In some embodiments, an auxiliary function module (not shown in the figure) is also included, comprising 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 within ±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 shield 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 shield can promptly remove welding fumes (using a dust extraction device). The flaw detection auxiliary bracket is movable and equipped with a mounting 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.

[0124] The following describes in detail the assembly installation method of the superconducting feeder system for the fusion device according to an embodiment of the present invention.

[0125] like Figures 1 to 13 As shown, the assembly installation method of the superconducting feeder system for a fusion device according to an embodiment of the present invention is based on assembling the superconducting feeder system 2000 using the aforementioned integrated assembly and installation platform 1000 for the fusion device superconducting feeder system at the assembly site to form a superconducting feeder system assembly (e.g., Figure 11 The installation is carried out as shown. The fusion device superconducting feeder system assembly and installation integrated platform 1000 includes a base module 1 and a main support frame module 2; as shown. Figure 1 As shown, the main support frame module 2 includes a current lead tank frame 201 of the current lead tank 210 and a feeder frame that supports the corrugated pipe section 224, the connecting pipe section 222, and the corresponding feeder sections (here, the feeder sections specifically refer to the straight pipe section 221 and the elbow section 223). The feeder frame is detachably connected to the current lead tank frame 201 and detachably supported on the base module 1; here, the superconducting feeder system assembly can be understood as: Figure 11 As shown, it consists of a superconducting feeder system 2000 and an integrated assembly and installation platform 1000 for the superconducting feeder system of the fusion device, which is pre-assembled at the assembly site. Figure 11In the superconducting feeder system 2000 assembled in the middle, the vacant section adjacent only to the bellows 2241 (see Figure 11 ) is used for on-site installation of connecting pipe section 222 in the main hall 5000 (see Figure 12 and Figure 13 This refers to the superconducting connector between the corrugated pipe section 224 and the feeder section (such as the straight pipe section 221 of the superconducting feeder system 2000 in layer B2 or L2, or the elbow section 223 in layer L3) to be connected at the main unit hall installation site. It is understood that at the assembly site, the various components of the superconducting feeder system 2000 are pre-assembled using the fusion device superconducting feeder system assembly and installation integrated platform 1000, leaving only one connecting pipe section 222 adjacent to the corrugated pipe 2241 (including the outer pipe and the superconducting connector located within the outer pipe) to be connected at the main unit hall 5000 installation site. The superconducting connector to be installed at this site is the superconducting connector between the corrugated pipe section 224 formed by the internal feeder of the fusion device main unit 3000 passing through the corrugated pipe 2241 and the feeder section adjacent to the corrugated pipe section 224. Since the superconducting feeder system assembly has been precisely assembled at the assembly site, only the pre-assembled part of the superconducting feeder system 2000, which has been pre-assembled at the assembly site, needs to be installed at the main unit hall 5000 site.

[0126] The assembly installation method for the superconducting feeder system of the fusion device according to this embodiment of the invention includes the following steps:

[0127] S1: Conduct digital pre-assembly, transportation, and installation planning to determine hoisting parameters, attitude adjustment sequences, and transportation routes. Optimizing the installation plan through digital pre-assembly technology helps improve installation efficiency, accuracy, and reduce safety risks.

[0128] S2: Pre-processing is performed on the superconducting feeder system assembly, including initial pose calibration, secondary cleaning, installation of the integrated measurement target, and clean encapsulation. Initial pose calibration and target installation facilitate real-time feedback closed-loop control for subsequent laser tracking measurements, enabling precise hoisting and installation of the pre-assembled feeder assembly. Secondary cleaning and clean encapsulation ensure the cleanliness of the superconducting feeder system assembly.

[0129] S3: Transport the superconducting feeder system assembly from the assembly site to the ground of the 4000-square-meter pre-assembly hall in the fusion device building, the platform (which can be a steel structure platform) of the 5000-square-meter main assembly hall in the fusion device building, or the ground. That is, see [link to relevant documentation]. Figures 10 to 12Based on the fact that the superconducting feeder system 2000 is suitable for installation on different floors of the main hall 5000 of the fusion device, such as B2 floor (i.e., the first basement floor or the lowest floor), L2 floor (i.e., the first floor above ground or the middle floor), and L3 floor (i.e., the second floor above ground or the highest floor), the pre-assembled part of the superconducting feeder system 2000, which is pre-installed on the integrated assembly and installation platform 1000 of the fusion device superconducting feeder system, together with the integrated assembly and installation platform 1000 of the fusion device superconducting feeder system, is transported as a whole to the ground of the pre-installation hall 4000 of the fusion device, the platform of the main hall 5000 of the fusion device, and the ground.

[0130] S4: A walking mechanism is installed at the bottom of the fusion device superconducting feeder system assembly and installation integrated platform 1000. The walking mechanism adopts a universal wheel ground tank to facilitate the subsequent movement of the superconducting feeder system assembly on the ground in the fusion device plant, such as the main hall 5000, avoiding high-altitude operations.

[0131] S5: The traveling mechanism transports and adjusts the superconducting feeder system assembly to the corresponding installation position on the axis of the main unit hall 5000, and then moves towards the center of the fusion device main unit 3000. This aligns the bellows 2241 of the superconducting feeder system 2000 with the Dewar window connector, allows the pre-installed internal feeders (i.e., the main unit's internal feeders) to pass through the bellows 2241 to form bellows section 224, overlaps the superconducting joints between adjacent bellows sections 224 and feeder sections, and positions the feeder system support block 230 on the superconducting feeder system assembly onto the positioning support part 510 in the main unit hall 5000. This step allows for precise control of the superconducting feeder system 2000's position, improving on-site installation accuracy.

[0132] S6: Construct a clean zone for the integrated platform for assembling and installing the superconducting feeder system of the fusion device (1000).

[0133] S7: Connect the superconducting joint between the adjacent bellows section 224 and the feeder section, in the adjacent bellows section 224 and the feeder section (e.g. Figure 11 An outer pipe is installed at the superconducting joint between the straight pipe section 221 and the corrugated pipe section 224, thereby enabling the installation of the connecting pipe section 222 adjacent to the corrugated pipe section 224 (see [link]). Figure 2 and Figure 13 ).

[0134] S8: 1000-integrated platform for dismantling, assembling, and installing the superconducting feeder system of the fusion device.

[0135] The prefabricated installation method for the superconducting feeder system of the fusion device in this invention has the following advantages over existing component-based installation processes: First, it ensures the installation accuracy and quality of the superconducting feeder system 2000: Through the rigid, modular integrated assembly and installation platform 1000 for the fusion device's superconducting feeder system, combined with closed-loop digital assembly technology, sub-millimeter-level installation accuracy is achieved, ensuring reliable connection of the feeder system interfaces; Second, it significantly shortens the construction cycle: The cumbersome processes of traditional on-site component hoisting, welding, and flaw detection are transferred to pre-assembly in a clean area, and overall transportation technology replaces multiple component transportations, reducing the on-site installation workload in the main hall 5000 and shortening the on-site construction cycle by 60%. The above points are as follows: Thirdly, 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 superconducting feeder system 2000, and extending the service life of the superconducting feeder; Fourthly, it reduces safety risks and improves safety: it provides stable support and working space for personnel and valuable components, hoisting the pre-assembled superconducting feeder assembly as a whole, avoiding the cumbersome operation of multiple hoisting of traditional components, reducing the number of hoisting operations and the risks of high-altitude operations, and avoiding shaking and accidental collisions during hoisting; Fifthly, it ensures the installation accuracy and quality of the feeder system; Sixthly, the installation method is replicable and standardized: the installation process, which relies on personnel experience, is transformed into a standardized and streamlined operation method, which is conducive to knowledge accumulation and quality control.

[0136] In some embodiments, step S1 includes the following sub-steps:

[0137] S101: The superconducting feeder system assembly is hoisted onto the axle vehicle at the assembly site; by hoisting the superconducting feeder system assembly onto the axle vehicle as a whole, the amount of hoisting work is reduced and the hoisting efficiency is improved.

[0138] S102: The superconducting feeder system assembly is transported from the assembly site to the pre-assembly hall 4000 of the fusion device plant using an axle vehicle. The overall transportation of the superconducting feeder system assembly using an axle vehicle reduces the amount of transportation work, improves transportation efficiency, and enhances the safety of transportation operations while reducing risks.

[0139] S103: Transfer the superconducting feeder system assembly from the axle vehicle to the ground of the pre-assembly hall 4000, the platform of the main unit hall 5000, or the ground.

[0140] In some embodiments, step S1 specifically involves: based on the actual external dimensions of the superconducting feeder system assembly, the fusion device Dewar, the biological shielding wall, and the internal feeder, obtaining samples through 3D scanning using a laser tracker, performing virtual simulation using computer software, determining the hoisting parameters and attitude adjustment sequence, and planning the transportation path. By establishing accurate 3D models of the feeder assembly, the fusion device, and the installation platform 1000, hoisting and installation simulations are performed in a virtual environment to optimize the hoisting path, verify the feasibility of the installation scheme, and reduce risks during the actual installation process.

[0141] Step S1 is further specified as follows: A precise 3D model of the feeder assembly, fusion device, and installation platform 1000 is created using modeling software, with a model accuracy of 0.01mm, including all detailed features. A virtual environment identical to the actual installation site is established, including surrounding buildings and equipment. Simulation parameters are set, including physical parameters such as gravitational acceleration and air resistance, to make the simulation results more realistic. The transportation path is planned, including initial path determination, interference checking, and path optimization. Initial path determination specifically refers to preliminarily determining the hoisting path based on the size and weight of the feeder assembly. Interference checking specifically involves checking whether the hoisting path interferes with the surrounding structure through virtual simulation. Path optimization specifically involves optimizing the hoisting path based on the interference check results to ensure the safety of the hoisting process. Hoisting parameters are calculated, i.e., using finite element analysis software to calculate the stress distribution during the hoisting process and determine the optimal hoisting point position and hoisting angle.

[0142] In some embodiments, step S2 specifically involves: initial pose calibration of the superconducting feeder system assembly, secondary cleaning of the superconducting feeder system assembly and installation of the integrated measurement target, and clean encapsulation of the superconducting feeder system assembly. In this step, the initial pose calibration of the superconducting feeder system assembly and the installation of the integrated measurement target facilitate accurate installation of the superconducting feeder system 2000; the secondary cleaning of the superconducting feeder system assembly and the clean encapsulation of the superconducting feeder system assembly after the installation of the measurement target ensure the cleanliness of both the superconducting feeder system assembly and the measurement target.

[0143] Step S2 is more specifically as follows: Use clean non-woven cloth and special cleaning agent to perform secondary cleaning on the superconducting feeder assembly; check the appearance quality of the superconducting feeder assembly to ensure that there are no defects such as damage or deformation; install six measuring target balls at key positions of the feeder assembly, and control the position accuracy of the target balls within ±0.1mm; mark the positions of key docking points on the superconducting feeder assembly to facilitate positioning during installation.

[0144] By deploying two laser trackers at the installation site and installing the corresponding measurement software, and setting the measurement parameters and coordinate system transformation parameters, the entire installation area can be covered. The measurement range of the laser trackers reaches 30m, and the measurement accuracy reaches ±0.02mm. The data acquisition frequency of the laser trackers is set to 10Hz to ensure that the pose changes of the superconducting feeder assembly can be monitored in real time.

[0145] During the movement of the superconducting feeder system assembly, the position of the key docking points of the superconducting feeder assembly is measured in real time using a laser tracker. A real-time comparison mechanism between the measurement data and the theoretical model is established to achieve precise adjustment and closed-loop control.

[0146] Precise adjustment and closed-loop control include initial measurement, error calculation, adjustment calculation, iterative adjustment, and adjustment accuracy. Initial measurement refers to measuring the initial pose of the key docking points of the superconducting feeder assembly using a laser tracker. Error calculation involves comparing the measurement results with the design requirements to calculate the pose error. Adjustment calculation uses a least squares optimization algorithm to calculate the optimal adjustment amount. Iterative adjustment involves adjusting the multi-dimensional adjustment mechanism of the platform 1000 according to the calculation results, and measuring and verifying each adjustment until the pose error meets the requirements. Adjustment accuracy refers to achieving a final adjustment accuracy where the position error is <±1mm and the angle error is <±1°.

[0147] In some embodiments, step S101 specifically involves: at the assembly site, connecting the special lifting tool to the superconducting feeder system assembly, connecting the special lifting tool to the hoisting system at the assembly site, hoisting the superconducting feeder system assembly onto the axle vehicle, lowering the height of the special lifting tool so that it is positioned on the axle vehicle, and then disconnecting the special lifting tool from the hoisting system at the assembly site. The special lifting tool experiences balanced force, resulting in stable hoisting.

[0148] Furthermore, step S102 specifically involves: the special lifting tool being transported together with the superconducting feeder system assembly from the assembly site to the pre-assembly hall 4000 via an axle vehicle, so that it can be used later at the fusion device plant.

[0149] In some embodiments, step S103 specifically involves: connecting the special lifting tool to the hoisting system at the fusion device building; if the superconducting feeder system 2000 is suitable for being arranged on the B2 floor of the main hall 5000, then the superconducting feeder system assembly is hoisted onto the ground of the pre-installation hall 4000; if the superconducting feeder system 2000 is suitable for being arranged on the L2 or L3 floor of the main hall 5000, then the superconducting feeder system assembly is hoisted onto the platform 1000 of the corresponding L2 floor or the ground of the L3 floor.

[0150] In some embodiments, step S4 includes the following sub-steps:

[0151] S401: The superconducting feeder system assembly is lifted as a whole by the hydraulic lifting mechanism 402 under the current lead tank 210 and the base module 1.

[0152] S402: The traveling mechanism is positioned below the current lead can 210 and the base module 1 respectively.

[0153] S403: The superconducting feeder system assembly is lowered as a whole by the hydraulic lifting mechanism 402 until the superconducting feeder system assembly is fully in place on the traveling mechanism, and the traveling mechanism is temporarily fixed to the superconducting feeder system assembly.

[0154] Therefore, the walking mechanism is easy to install.

[0155] In some embodiments, step S5 includes the following sub-steps:

[0156] S501: 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 of the fusion device main unit 3000.

[0157] S502: The movement stops when the front end of the feeder frame is attached to the window wall of the biological shielding wall.

[0158] S503: Using hydraulic jacks to support the feeder frame between its front end and the biological shielding wall window, remove the foremost base module 1 and transfer the walking mechanism below it to the area between the feeder frame's front end and the biological shielding wall window. Depressurize the hydraulic jacks and secure the walking mechanism at the biological shielding wall window to the front end of the feeder frame. During the movement towards the center of the fusion device main unit 3000, suspend the removal of base module 1 to avoid interference between base module 1 and the biological wall during subsequent movement. Simultaneously, install the walking mechanism removed from base module 1 between the feeder frame's front end and the biological shielding wall window.

[0159] S504: The traveling mechanism continues to move the superconducting feeder system assembly towards the center to the designated position and pauses the movement; using hydraulic jacks to support the front end of the feeder frame between the feeder frame and the biological shielding wall window, the traveling mechanism located below the next base module 1 is removed and moved to the front end of the feeder frame between the biological shielding wall window and the feeder frame. The hydraulic jacks are depressurized, and the traveling mechanism at the biological shielding wall window is fixed to the front end of the feeder frame. Then, the traveling mechanism continues to move the superconducting feeder system assembly towards the center to the next designated position, and this process is repeated until all base modules 1 are removed.

[0160] S505: The traveling mechanism continues to move the superconducting feeder system assembly towards the center until the bellows 2241 at the front end of the superconducting feeder system assembly is aligned with the Dewar window connector, the pre-installed internal feeder is inserted into the bellows 2241 to form a bellows section 224, and the superconducting joints between adjacent bellows sections 224 and feeder sections are staggered and overlapped. At this point, the superconducting feeder system 2000 reaches the corresponding installation position.

[0161] S506: The superconducting feeder system assembly is lifted by hydraulic jacking mechanism 402 and hydraulic jacks, all walking mechanisms are removed, and the superconducting feeder system assembly is lowered by hydraulic jacking mechanism 402 and hydraulic jacks until the superconducting joint is connected, the bellows 2241 is assembled with the Dewar window nozzle, and the support block of the superconducting feeder system 2000 is positioned on the support seat.

[0162] Further, step S501 specifically involves: if the superconducting feeder system 2000 is suitable for placement on the B2 floor, and the superconducting feeder system assembly is located on the ground of the pre-installation hall 4000, the superconducting feeder system assembly is transported to the lifting platform 6000 via a walking mechanism. The lifting platform 6000 then moves the superconducting feeder system assembly downwards to the B2 floor. The walking mechanism then moves the superconducting feeder system assembly to the vicinity of the corresponding installation position, and then adjusts the superconducting feeder system assembly to the axis of the corresponding installation position before moving it toward the center position of the fusion device main unit 3000. This is because the hoisting system at the fusion device building cannot directly hoist the superconducting feeder system 2000 to the ground of the B2 floor; it can only reach the ground of the pre-assembly hall 4000. Therefore, the superconducting feeder system assembly is transferred to the vicinity of the corresponding installation position via the traveling mechanism and the lifting platform 6000. Then, the superconducting feeder system assembly is transported and adjusted to the axis of the corresponding installation position via the traveling mechanism, and then moved towards the center position of the fusion device main unit 3000.

[0163] If the superconducting feeder system 2000 is suitable for placement on the L2 or L3 layer, the traveling mechanism directly transports the superconducting feeder system assembly and adjusts it to the axis of the corresponding installation position, and then moves it towards the center position of the fusion device main unit 3000.

[0164] In some embodiments, in step S6, 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; thus, the cleanliness requirements of the fusion device can be met.

[0165] In some embodiments, the clean zone 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 smoke exhaust duct. After the amount of dust in the air in the sealed space meets the requirements of ISO Class 9, the components in the sealed space are cleaned again. In this way, the cleanliness requirements of the fusion device can be met.

[0166] In some embodiments, the enclosed space is equipped with a backflow inlet / outlet, which is fitted with a sealed door and an air shower buffer zone. This ensures that the cleanliness requirements of the fusion device are met.

[0167] In some embodiments, step S7 includes the following sub-steps:

[0168] S701: Perform indium voltage and resistance tests on the core wire of the superconducting connector, and then weld and inspect the cooling tube of the superconducting connector.

[0169] S702: Insulation wrapping and testing of the outer periphery of the cooling tube of the superconducting joint.

[0170] S703: Install insulating components, supporting components, and cold shield jumpers outside the insulating winding layer of the superconducting joint, and weld and inspect the cold shield jumpers at the superconducting joint.

[0171] S704: Install a connecting pipe outside the cold screen jumper of the superconducting connector, and weld and inspect the connecting pipe to the corrugated pipe 2241 and the connecting pipe to the outer pipe of the feeder section.

[0172] In some embodiments, in step S501, the indium-coated junction resistance of the superconducting connector's core wire is required to be no greater than 0.5 nanoohms; after the cooling tube of the superconducting connector is welded, visual inspection, non-destructive testing, thermal shock testing, and helium leak testing are required, with the helium leak testing requiring a leak rate of less than 1×10⁻⁶. -9 pa·m³ / s.

[0173] In some embodiments, non-destructive testing is performed on the butt welds of the cooling pipes. Specifically, a flaw detection bracket is installed on the integrated assembly and installation platform 1000 of the superconducting feeder system of the fusion device, and a flaw detection radiation protection chamber is built. Following the principle of proceeding from the center outwards, concentrated radiographic testing is conducted on the butt welds of the cooling pipes in batches and at different angles. Any defects found are then addressed. This approach helps ensure the quality of the superconducting feeder system 2000 and ensures high operational safety.

[0174] In some embodiments, step S702 specifically involves: after insulating the outer periphery of the cooling tube of the superconducting connector, performing AC / DC withstand voltage insulation tests and Pascal tests. This helps ensure the quality of the superconducting feeder system 2000.

[0175] In some embodiments, step S703 specifically involves: sequentially installing an insulating component, a supporting component, and a cold shield jumper from the inside out outside the insulating winding layer of the superconducting connector; then, performing visual inspection, penetrant testing, and other non-destructive testing, as well as thermal shock testing, on the butt weld of the welded cold shield jumper; and finally, performing a helium leak test. This helps ensure the quality of the superconducting feeder system 2000.

[0176] In some embodiments, in step S703, non-destructive testing is performed on the butt weld of the welded cold shield jumper. Specifically, a flaw detection bracket is installed on the integrated assembly and installation platform 1000 of the fusion device's superconducting feeder system, a flaw detection radiation protection room is built, and radiographic testing is performed on the butt weld of the welded cold shield jumper. Any defects found are then addressed. This ensures high operational safety.

[0177] In some embodiments, step S8 specifically involves: before dismantling the integrated assembly and installation platform 1000 for the fusion device's superconducting feeder system, confirming that the superconducting feeder assembly is securely fixed, then gradually disconnecting the connection between the integrated assembly and installation platform 1000 and the superconducting feeder assembly, monitoring the positional changes of the feeder assembly during the disconnection process; using hydraulic jacks and a lifting mechanism to slowly lower the platform 1000, maintaining stability during the descent; after disassembling the integrated assembly and installation platform 1000, transporting it away from the site, taking care to protect the key components of the integrated assembly and installation platform 1000 during disassembly. It should be noted that the prefabricated installation method for the fusion device's superconducting feeder system in this embodiment of the invention employs digital pre-assembly technology and calibration and measurement system technology for the integrated assembly and installation platform 1000. Among these measures, digital assembly utilizes professional 3D modeling software to establish a precise model, and virtual simulation is used to check the hoisting path and installation process; the laser tracking and measurement system sets six measurement target balls at key locations on the feeder assembly to collect pose data in real time; the adjustment control adopts a least squares optimization algorithm to achieve coordinated adjustment of the six degrees of freedom; the coordinate calibration of the fusion device superconducting feeder system assembly and installation integrated platform 1000 uses a laser tracker to measure at least six non-coplanar feature points to establish the transformation relationship between the coordinate system of the fusion device superconducting feeder system assembly and installation integrated platform 1000 and the coordinate system of the fusion device; the final installation accuracy requires a position error of less than ±1mm and an angle error of less than ±1°.

[0178] In summary, the prefabricated installation method for the superconducting feeder system of the fusion device in this embodiment of the invention employs digital pre-assembly technology and achieves real-time feedback closed-loop control through laser tracking measurement. This allows for the overall hoisting and precise installation of the pre-assembled feeder assembly, solving the technical problems of low efficiency, difficulty in guaranteeing accuracy, and high safety risks associated with traditional component-based hoisting and installation. Specifically, the prefabricated installation method for the superconducting feeder system of the fusion device in this embodiment of the invention enables the overall hoisting and transportation of the superconducting feeder assembly, replacing the traditional multiple hoisting of individual components; it optimizes the hoisting and transportation path and installation scheme through digital pre-assembly technology; and it achieves real-time feedback closed-loop control using laser tracking measurement technology, ensuring sub-millimeter-level installation accuracy. This significantly reduces on-site work, shortens the construction period, and lowers safety risks.

[0179] The advantages of the prefabricated installation method for the superconducting feeder system of the fusion device in this invention are as follows: First, high precision and high quality: Through the rigid and modular integrated platform 1000 for assembling and installing the superconducting feeder system of the fusion device, combined with closed-loop digital measurement, sub-millimeter-level installation precision is achieved, ensuring reliable docking of the feeder system interface; Second, high efficiency and short construction period: The integrated platform 1000 for assembling and installing the superconducting feeder system of the fusion device can be pre-assembled and quickly placed on site. The adjustment process is mechanized and digitalized, avoiding repeated scaffolding erection and dismantling and manual hammering adjustments, increasing installation efficiency by more than 50%; thirdly, it offers high safety and low risk: providing stable support and working space for personnel and valuable components, reducing the risks of working at heights and near edges, and avoiding swaying and accidental collisions during hoisting; fourthly, it offers good versatility and economy: the modular design allows the fusion device superconducting feeder system assembly and installation integrated platform 1000 to adapt to feeder installations of different sizes and locations, and can be reused by changing interface adapter modules, reducing the cost of special tooling; fifthly, it improves cleanliness control: the fusion device superconducting feeder system assembly and installation integrated platform 1000 has a regular structure, is easy to clean, and can integrate protective measures, which helps meet the high requirements of the clean environment inside the fusion device; sixthly, the method is replicable and standardized: the installation process, which relies on personnel experience, is transformed into a standardized and streamlined operation method, which is conducive to knowledge accumulation and quality control.

[0180] 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.

[0181] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

Claims

1. A prefabricated installation method for a superconducting feeder system of a fusion device, characterized in that, The installation is based on the superconducting feeder system assembly formed by assembling the superconducting feeder system at the assembly site using an integrated platform for assembling and installing the superconducting feeder system of the fusion device. The integrated platform for assembling and installing the superconducting feeder system of the fusion device includes a base module and a main support frame module. The main support frame module includes a current lead tank frame that carries the current lead tank and a feeder frame that carries the corrugated pipe section, connecting pipe section and corresponding feeder section. The feeder frame is detachably connected to the current lead tank frame and detachably supported on the base module. In the superconducting feeder system, only the connecting pipe section adjacent to the corrugated pipe section needs to be installed on site. The installation method includes the following steps: S1: Conduct digital pre-assembly, transportation and installation planning, and determine hoisting parameters, attitude adjustment sequence and transportation route; S2: Preprocessing the superconducting feeder system assembly; S3: Transport the superconducting feeder system assembly from the assembly site to the floor of the pre-assembly hall of the fusion device building, or the platform or floor of the main unit hall of the fusion device building; S4: Install a walking mechanism on the integrated assembly and installation platform of the superconducting feeder system of the fusion device; S5: The traveling mechanism transports and adjusts the superconducting feeder system assembly to the axis of the corresponding installation position, and then moves towards the center of the fusion device main unit, so that the bellows of the superconducting feeder system is aligned with the Dewar window connector, the pre-installed internal feeder is inserted into the bellows to form the bellows section, the superconducting joints between adjacent bellows sections and feeder sections overlap, and the superconducting feeder system assembly is positioned on the positioning support part of the main unit hall; S6: Construct a clean area for the integrated assembly and installation platform of the superconducting feeder system of the fusion device; S7: Connect the superconducting joints between adjacent corrugated pipe sections and feeder sections, and install an outer tube at the superconducting joints between adjacent corrugated pipe sections and feeder sections. S8: Dismantle the integrated assembly and installation platform for the superconducting feeder system of the fusion device.

2. The prefabricated installation method for the superconducting feeder system of a fusion device according to claim 1, characterized in that, Step S1 includes the following sub-steps: S101: Hoist the superconducting feeder system assembly onto the axle vehicle at the assembly site; S102: The superconducting feeder system assembly is transferred from the assembly site to the pre-assembly hall of the fusion device plant by the axle vehicle. S103: Transfer the superconducting feeder system assembly from the axle vehicle to the ground of the pre-assembly hall, the platform of the main unit hall, or the ground.

3. The prefabricated installation method for the superconducting feeder system of a fusion device according to claim 2, characterized in that, Step S1 specifically involves: based on the actual external dimensions of the superconducting feeder system assembly, the fusion device Dewar, the biological shielding wall, and the internal feeder, obtaining samples through three-dimensional scanning using a laser tracker, performing virtual simulation using computer software, determining the hoisting parameters and attitude adjustment sequence, and planning the transportation path.

4. The prefabricated installation method for the superconducting feeder system of a fusion device according to claim 3, characterized in that, Step S2 specifically involves: initial pose calibration of the superconducting feeder system assembly, secondary cleaning of the superconducting feeder system assembly and installation of the integrated measurement target, and cleaning and encapsulation of the superconducting feeder system assembly.

5. The prefabricated installation method for the superconducting feeder system of a fusion device according to claim 4, characterized in that, Step S101 specifically involves: at the assembly site, connecting the special lifting tool to the superconducting feeder system assembly, connecting the special lifting tool to the hoisting system at the assembly site, hoisting the superconducting feeder system assembly onto the axle vehicle, lowering the height of the special lifting tool so that the special lifting tool is positioned on the axle vehicle, and disconnecting the special lifting tool from the hoisting system at the assembly site.

6. The prefabricated installation method for the superconducting feeder system of a fusion device according to claim 5, characterized in that, Step S102 specifically involves: the special lifting tool being transported together with the superconducting feeder system assembly from the assembly site to the pre-assembly hall via the axle vehicle.

7. The prefabricated installation method for the superconducting feeder system of a fusion device according to claim 6, characterized in that, Step S103 specifically involves connecting the special lifting device to the hoisting system at the fusion device building. If the superconducting feeder system is suitable for placement on the B2 floor of the main hall, the superconducting feeder system assembly is hoisted onto the ground of the pre-installation hall. If the superconducting feeder system is suitable for placement on the L2 or L3 floor of the main hall, the superconducting feeder system assembly is hoisted onto the platform of the corresponding L2 floor or the ground of the L3 floor.

8. The prefabricated installation method for the superconducting feeder system of a fusion device according to claim 1, characterized in that, Step S4 includes the following sub-steps: S401: The superconducting feeder system assembly is lifted as a whole by a hydraulic lifting mechanism under the current lead tank and the base module; S402: The walking mechanism is positioned below the current lead can and the base module respectively; S403: The superconducting feeder system assembly is lowered as a whole by means of the hydraulic lifting mechanism until the superconducting feeder system assembly is fully positioned on the traveling mechanism, and the traveling mechanism is temporarily fixed to the superconducting feeder system assembly.

9. The prefabricated installation method for the superconducting feeder system of a fusion device according to claim 8, characterized in that, Step S5 includes the following sub-steps: S501: The walking mechanism transports and adjusts the superconducting feeder system assembly to the axis of the corresponding installation position, and then moves it towards the center of the fusion device main unit. S502: The movement is paused after the front end of the feeder frame is attached to the window wall of the biological shielding wall; S503: Using a hydraulic jack to support the front end of the feeder frame between the front end of the feeder frame and the window wall of the biological shielding wall, remove the first base module and transfer the walking mechanism below the first base module to the front end of the feeder frame between the front end of the feeder frame and the window wall of the biological shielding wall. Depressurize the hydraulic jack and fix the walking mechanism at the window wall of the biological shielding wall to the front end of the feeder frame. S504: The walking mechanism continues to move the superconducting feeder system assembly towards the center to the designated position and pauses the movement; supported by the hydraulic jack between the front end of the feeder frame and the biological shielding wall window, the walking mechanism located below the next base module is removed and transferred to the front end of the feeder frame and the biological shielding wall window. The hydraulic jack is depressurized, and the walking mechanism at the biological shielding wall window is fixed to the front end of the feeder frame. Then, the walking mechanism continues to move the superconducting feeder system assembly towards the center to the next designated position, and this process is repeated until all base modules are removed. S505: The walking mechanism continues to move the superconducting feeder system assembly toward the center until the corrugated pipe at the front end of the superconducting feeder system assembly is aligned with the Dewar window connector, the pre-installed internal feeder is inserted into the corrugated pipe to form a corrugated pipe segment, and the superconducting joints between adjacent corrugated pipe segments and feeder segments are staggered and overlapped. S506: The superconducting feeder system assembly is lifted by the hydraulic lifting mechanism and the hydraulic jack, all the walking mechanisms are removed, and the superconducting feeder system assembly is lowered by the hydraulic lifting mechanism and the hydraulic jack until the superconducting connector is connected, the bellows and the Dewar window connector are aligned, and the support block of the superconducting feeder system is positioned on the support base.

10. The prefabricated installation method for the superconducting feeder system of a fusion device according to claim 9, characterized in that, Step S501 is as follows: If the superconducting feeder system is suitable for placement on the B2 floor, and the superconducting feeder system assembly is located on the ground of the pre-installation hall, the superconducting feeder system assembly is transported to the lifting platform by the walking mechanism. The lifting platform then moves the superconducting feeder system assembly downwards to the B2 floor. The walking mechanism then moves the superconducting feeder system assembly to the vicinity of the corresponding installation position. The superconducting feeder system assembly is then adjusted to the axis of the corresponding installation position and then moved towards the center of the fusion device main unit. If the superconducting feeder system is suitable for placement on layer L2 or layer L3, the traveling mechanism directly transports and adjusts the superconducting feeder system assembly to the axis of the corresponding installation position, and then moves it towards the center of the fusion device main unit.

11. The prefabricated installation method for the superconducting feeder system of a fusion device according to claim 1, characterized in that, In step S6, 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.

12. The prefabricated installation method for the superconducting feeder system of a fusion device according to claim 11, 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.

13. The prefabricated installation method for the superconducting feeder system of a fusion device according to claim 12, 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.

14. The prefabricated installation method for the superconducting feeder system of a fusion device according to claim 1, characterized in that, Step S7 includes the following sub-steps: S701: Perform indium voltage and resistance tests on the core wire of the superconducting connector, and then weld and inspect the cooling tube of the superconducting connector; S702: Perform insulation wrapping and inspection on the outer periphery of the cooling tube of the superconducting joint; S703: Install insulating components, supporting components, and cold shield jumpers outside the insulating winding layer of the superconducting joint, and weld and inspect the cold shield jumpers at the superconducting joint; S704: Install a connecting pipe outside the cold screen jumper of the superconducting connector, and weld and inspect the connecting pipe to the corrugated pipe and the connecting pipe to the outer pipe of the feeder section.

15. The assembled installation method for the superconducting feeder system of a fusion device according to claim 14, characterized in that, In step S701, the indium-impregnated junction resistance of the superconducting connector's core wire is required to be no greater than 0.5 nanoohms; after the cooling tube of the superconducting connector is welded, visual inspection, non-destructive testing, thermal shock testing, and helium leak testing are required. The helium leak testing requires a leak rate of less than 1×10⁻⁶. -9 pa·m³ / s.

16. The prefabricated installation method for the superconducting feeder system of a fusion device according to claim 15, characterized in that, In step S701, non-destructive testing is performed on the butt weld of the cooling pipe. Specifically, a flaw detection bracket is installed on the integrated assembly and installation platform of the superconducting feeder system of the fusion device, a flaw detection radiation protection room is built, and the butt weld of the cooling pipe is subjected to concentrated radiographic flaw detection in batches and at different angles according to the principle of from the center outwards. Any defects found are then dealt with.

17. The assembled installation method for the superconducting feeder system of a fusion device according to claim 14, characterized in that, Step S702 specifically involves: after insulating the outer periphery of the cooling tube of the superconducting joint, performing AC / DC withstand voltage insulation tests and Pascal tests.

18. The prefabricated installation method for the superconducting feeder system of a fusion device according to claim 14, characterized in that, Step S703 specifically involves: installing the insulating component, the supporting component, and the cold shield jumper in sequence from the inside out outside the insulating winding layer of the superconducting connector; then, visual inspection, penetrant non-destructive testing, and thermal shock testing are performed on the butt weld of the welded cold shield jumper; and then helium leak detection testing is performed.

19. The assembled installation method for the superconducting feeder system of a fusion device according to claim 18, characterized in that, In step S703, non-destructive testing is performed on the butt weld of the welded cold screen jumper tube. Specifically, a flaw detection bracket is installed on the integrated assembly and installation platform of the superconducting feeder system of the fusion device, a flaw detection radiation protection room is built, radiographic flaw detection is performed on the butt weld of the welded cold screen jumper tube, and the defects found are dealt with.

Images