Integrated carrying platform for filling, testing and transferring of fusion device TBM assembly

Abstract

The application belongs to the technical field of nuclear fusion engineering, and discloses a kind of integrated bearing platform of filling, test and transfer of fusion device TBM assembly, wherein the main platform includes bottom plate and mounting rack extending upward from the opposite sides of the bottom plate, for placing TBM assembly on the bottom plate; TBM temporary top cover includes top cover main body and embedded body protruding downward from the lower surface of the top cover main body, the opposite sides of the top cover main body are used for placing on the corresponding mounting rack, and the embedded body is used for detachably sealingly embedded in the interface of TBM assembly; lifting lug plate is used for placing at the upper side of the opposite sides of the top cover main body; bolt is used for passing through lifting lug plate, top cover main body and mounting rack, so as to fasten lifting lug plate, top cover main body and mounting rack; buffer pad is arranged at the lower surface of the bottom plate. The application can complete filling, all filling quality detection and process treatment before TBM formal top cover buckling, and can integrate TBM assembly packaging, transfer and hoisting functions.

Description

Technical Field

[0001] This invention belongs to the field of nuclear fusion engineering technology, and in particular relates to an integrated support platform for the filling, testing and transportation of TBM (tritium breeding test blanket module) components of a fusion device. Background Technology

[0002] In the engineering filling process of the hybrid sphere bed of TBM modules in a fusion device, the final confirmation of the filling quality is a critical step in determining the operational performance and safety of the TBM modules. According to current technology, the final top cover of the TBM module is permanently sealed using electron beam welding or vacuum brazing. Once the cover is closed, it cannot be opened for rework or adjustment.

[0003] In the prior art, after the TBM component is filled into the mixed ball bed, the formal top cover is directly installed and permanently sealed, which has the following problems: (1) The filling rate is estimated by overall weighing, and the filling rate cannot be accurately measured.

[0004] (2) It is impossible to perform drying process verification, helium pressure drop test and other work before formal sealing.

[0005] (3) If problems such as insufficient filling rate, poor mixing uniformity or excessive residual moisture are found later, the entire TBM module will be scrapped or its performance will be greatly reduced.

[0006] (4) The TBM component structure is made of 316LN. In order to adapt to the main components such as the vacuum chamber, no hoisting or transfer lifting points are arranged on it, and no temporary lifting points can be arranged by welding or hoisting bolts. The length, width and height of a single TBM component is about 0.8m×0.6m×1m, and the mass is relatively large, making the transfer and hoisting process quite difficult. At the same time, after the mixed ball bed is filled, violent vibration is strictly prohibited during the hoisting and transfer process, and the acceleration is required to be <0.1g throughout the process.

[0007] (5) Currently, the existing temporary top covers at home and abroad are all simple blind plate structures, which can only achieve basic sealing functions. At the same time, due to the inconsistency between the installation interface and sealing structure of the formal top cover, the sealing performance may be poor, and it is impossible to simulate the actual helium pressure drop test and other process conditions, resulting in low accuracy of measurement data.

[0008] Therefore, developing a multifunctional temporary platform that can complete all filling quality inspections and process treatments before the TBM is officially capped, while also integrating functions such as TBM component packaging, transportation, and hoisting, is a key issue that urgently needs to be addressed in the engineering of TBM components. Summary of the Invention

[0009] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, one objective of this invention is to propose an integrated support platform for the filling, testing, and transfer of TBM (Turbine Busbar) modules in a fusion device. This platform can complete filling, all filling quality inspections, and process treatments before the TBM's final top cover is closed. Simultaneously, it integrates TBM module packaging, transfer, and hoisting functions to solve the technical problems of irreversible filling quality issues after the TBM's final top cover is closed, inconvenient hoisting and transfer, and high acceleration requirements for hoisting and transfer of TBM modules after filling the hybrid ball bed.

[0010] The TBM component packing, testing, and transport integrated support platform for fusion devices according to embodiments of the present invention includes: The main platform includes a base plate and mounting brackets extending upward from opposite sides of the base plate for placing TBM components on the base plate and between the mounting brackets; TBM temporary top cover, the TBM temporary top cover includes a top cover body and an insert protruding downward from the lower surface of the top cover body, the opposite sides of the top cover body are used to be placed on the corresponding mounting bracket, and the insert is used to detachably seal and embed into the interface of the TBM assembly; Lifting lugs, which are used to be placed on the upper side of opposite sides of the top cover body; Bolts are used to pass through the lifting lug plate, the top cover body, and the mounting bracket to fasten the lifting lug plate, the top cover body, and the mounting bracket; A cushioning pad is disposed on the lower surface of the base plate.

[0011] Compared with the prior art, the integrated support platform for TBM component packing, testing and transportation of the fusion device according to the embodiments of the present invention has the following significant advantages: 1. Completely solve the problem of irreversible rework: All filling quality inspections and process treatments are completed before the TBM is officially covered. If problems such as insufficient filling rate are found, particles can be directly added, avoiding the risk of the entire TBM module being scrapped or reworked.

[0012] 2. The TBM temporary top cover is fixed to the main platform by the bolts, and a reliable seal is achieved between the TBM temporary top cover and the TBM assembly. The TBM temporary top cover and the TBM permanent top cover can achieve the same sealing effect, which can ensure the accuracy and reliability of the measurement data. The deviation between the measurement results and the actual cladding operating conditions is ≤1%.

[0013] 3. Reusable: Adopting a modular design, all functional components can be disassembled and replaced, with a service life of ≥100 times. It can be used in the filling process of multiple TBM components, which greatly reduces equipment costs.

[0014] IV. Convenient hoisting and transportation: The hoisting lugs allow the TBM components to be hoisted and transported as a whole, together with the TBM component packing, testing and transportation integrated support platform of the fusion device.

[0015] 5. By setting the aforementioned buffer pad, vibrations during transport can be absorbed, ensuring that the acceleration is <0.1g throughout the entire process.

[0016] VI. Standardized Design: Complies with relevant national and industry standards, and has universal interfaces.

[0017] In some embodiments, the TBM component is divided into multiple large sections by partition plates, and each large section is divided into multiple filling areas by cooling pipes; correspondingly, there are multiple embeddings, the number of which is the same as the number of the large sections, and the multiple embeddings are used to be embedded into the interfaces of the multiple large sections in a one-to-one correspondence.

[0018] In some embodiments, the temporary top cover of the TBM is made of 316LN stainless steel with a polished surface and a roughness Ra≤1.6μm.

[0019] In some embodiments, the TBM temporary top cover further includes a first sealing ring and a second sealing ring; the first sealing ring is installed in a first sealing groove at the lower outer periphery of the insert; the second sealing ring is installed in a second sealing groove on the top cover body and surrounds the upper outer edge of the insert.

[0020] In some embodiments, the first sealing ring and the second sealing ring are made of fluororubber.

[0021] In some embodiments, the wire diameter of the first sealing ring is 2.5~2.8mm, and the wire diameter of the second sealing ring is 3.4~3.7mm.

[0022] In some embodiments, the main platform is welded from 304L stainless steel profiles.

[0023] In some embodiments, a 316LN stainless steel spacer is also included, which is placed on top of the base plate to separate the TBM assembly from the base plate.

[0024] In some embodiments, the thickness of the 316LN stainless steel insulating gasket is 0.5~1mm.

[0025] In some embodiments, the lug plate is welded from 304L stainless steel profiles.

[0026] In some embodiments, the bolts are 10.9 grade high-strength bolts.

[0027] In some embodiments, the cushioning pad is disposed on the lower surface of the base plate, and the hardness of the cushioning pad is Shore A50.

[0028] 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

[0029] Figure 1 This is a schematic diagram illustrating the application of the integrated support platform for TBM component packing, testing, and transportation in a fusion device according to an embodiment of the present invention. Figure 2 This is a three-dimensional schematic diagram of the integrated support platform for the TBM component packing, testing, and transportation of the fusion device according to an embodiment of the present invention. Figure 3 This is a top view schematic diagram of the integrated support platform for the TBM component packing, testing, and transportation of the fusion device according to an embodiment of the present invention; Figure 4 This is a partial bottom view of the integrated support platform for the TBM component packing, testing and transportation of the fusion device according to an embodiment of the present invention. Figure 5 This is a top view diagram of a TBM component; Figure 6 This is a 3D schematic diagram of a TBM component.

[0030] Figure Labels TBM assembly 1; partition plate 101; cooling pipe 102; large compartment 103; filling area 1031; gas purging pipe 104; main platform 2; base plate 201; mounting bracket 202; TBM temporary top cover 3; top cover body 301; insert 302; first sealing ring 303; second sealing ring 304; lifting lug plate 4; bolt 5; 316LN stainless steel isolation gasket 6; buffer pad 7. Detailed Implementation

[0031] Embodiments of the present invention are described in detail below, examples of which 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.

[0032] The following is combined with Figures 1 to 6 This invention describes the TBM component packing, testing, and transport integrated support platform for the fusion device according to embodiments of the present invention.

[0033] The TBM component packing, testing and transfer integrated support platform of the fusion device according to the present invention includes a main platform 2, a TBM temporary top cover 3, a lifting lug plate 4, bolts 5 and a buffer pad 7.

[0034] The main platform 2 includes a base plate 201 and mounting brackets 202 extending upwards from opposite sides of the base plate 201, for placing the TBM assembly 1 on the base plate 201 and between the mounting brackets 202. The base plate 201 supports and carries the TBM assembly 1, and the mounting brackets 202 are used to fix it to the TBM temporary top cover 3 and the lifting lugs 4. The TBM assembly 1 is filled with Be (a type of mineral) with a 10:1 particle size ratio (5mm particle size). 12 A mixed pellet bed of Ti:Li2TiO3 with a particle size of 0.5 mm and a volume ratio of 7:3.

[0035] The TBM temporary top cover 3 includes a top cover body 301 and an insert 302 protruding downward from the lower surface of the top cover body 301. The opposite sides of the top cover body 301 are used to be placed on the corresponding mounting bracket 202, and the insert 302 is used to be detachably and sealed in the interface of the TBM assembly 1. It should be noted that both the insert 302 and the TBM permanent top cover are used to be embedded in the interface of the TBM module 1. The difference lies in that the insert 302 has a sealing ring (as described below as the first sealing ring 303) to achieve a seal with the TBM module 1. Simultaneously, by fixing the top cover body 301 to the mounting bracket 202, the TBM temporary top cover 3 is prevented from loosening, effectively ensuring that the insert 302 is reliably and securely embedded in the interface of the TBM module 1. This provides a reliable seal for various processes implemented after the mixed ball bed filling, such as filling rate determination, purging and drying, residual moisture detection, and purging pressure drop tests. The TBM permanent top cover, on the other hand, has a welded bevel but no sealing ring; a reliable seal between the TBM permanent top cover and the TBM module 1 is achieved through welding. Therefore, the TBM temporary top cover 3 and the TBM permanent top cover can achieve equivalent sealing effects, ensuring the accuracy and reliability of measurement data, with the deviation between the measurement results and the actual cladding operating conditions ≤1%.

[0036] The lifting lugs 4 are placed on the upper sides of opposite sides of the main body 301 of the top cover. The lifting lugs 4 are mainly used to facilitate the hoisting and transportation of the TBM module 1 together with the TBM module packing, testing and transportation integrated support platform of the fusion device as a whole.

[0037] Bolt 5 is used to pass through the lifting lug plate 4, the top cover body 301, and the mounting frame 202 to secure the lifting lug plate 4, the top cover body 301, and the mounting frame 202. This allows for detachable fixing between the TBM temporary top cover 3 and the mounting frame 202. Furthermore, the lifting lug plate 4 facilitates the hoisting and transport of the TBM component 1 together with the fusion device's TBM component packing, testing, and transport integrated support platform as a whole.

[0038] The buffer pad 7 is placed on the lower surface of the base plate 201 to absorb vibrations during the transfer process and ensure that the acceleration is less than 0.1g throughout the entire process.

[0039] The method of using the integrated support platform for filling, testing, and transportation of TBM components in the fusion device according to this embodiment of the invention is as follows: The TBM assembly 1, whose internal area has been pre-cleaned and dried, is hoisted onto the base plate 201 of the main platform 2. A temporary TBM top cover 3 is then placed over the TBM assembly 1, effectively sealing the insert 302 into the interface of the TBM assembly 1. Simultaneously, the opposite sides of the top cover body 301 are placed on top of the mounting brackets 202 on opposite sides of the base plate 201. Then, lifting lugs 4 are placed on the upper surfaces of the opposite sides of the top cover body 301. Bolts 5 are then passed through the lifting lugs 4, the top cover body 301, and the mounting brackets 202 to secure the lifting lugs 4, the top cover body 301, and the mounting brackets 202, forming the final assembly. The TBM assembly 1 is divided into multiple large sections 103 by partition plates 101, and each large section 103 is further divided into multiple filling areas 1031 by cooling pipes 102. The final assembly is then hoisted onto the piezoelectric ceramic precision vibration table using the lifting lugs 4.

[0040] Fill each large section 103 in the TBM module 1 with pure water and then drain it. Measure the volume of the first pure water corresponding to each large section 103 before filling. Purge and dry the internal area of ​​the TBM module 1.

[0041] Weigh out multiple sets of Be, each accounting for 70% of the volume, corresponding to multiple volumes of first pure water. 12 The mass of Ti particles and Li2TiO3 particles (30% by volume), Be 12 The particle size ratio of Ti particles to Li2TiO3 particles is 10:1.

[0042] Be in the same group 12 Ti particles and Li2TiO3 particles are added to a three-dimensional motion mixer and mixed to obtain mixed particles, ensuring that the mixing index is ≥0.97.

[0043] Remove the temporary top cover 3 of the TBM. In a Class 10,000 clean environment, the mixed particles in the same group of three-dimensional motion mixers are layered from bottom to top and densely filled into multiple filling areas 1031 in the corresponding large interval 103 of the TBM component 1, and water-soluble paper pads are added between adjacent layers.

[0044] By each mixed set of Be 12 Repeat the steps of filling Ti particles and Li2TiO3 particles into the corresponding large interval 103 to complete the filling of the remaining large intervals 103. Install the temporary top cover 3 of the TBM, measure the filling rate of the mixed particles in each large interval 103, dissolve and drain all water-soluble paper pads with water, test the residual moisture in the TBM module 1 and verify the purging pressure drop; after the filling rate, residual moisture and purging pressure drop verification all meet the requirements, remove the temporary cover of the TBM module 1 and install the formal cover of the TBM module 1.

[0045] Compared with the prior art, the integrated support platform for TBM component packing, testing and transportation of the fusion device according to the embodiments of the present invention has the following significant advantages: 1. Completely solve the problem of irreversible rework: All filling quality inspections and process treatments are completed before the TBM is officially covered. If problems such as insufficient filling rate are found, particles can be directly added, avoiding the risk of the entire TBM module being scrapped or reworked.

[0046] 2. The TBM temporary top cover 3 is fixed to the main platform 2 by bolts 5, and a reliable seal is achieved between the TBM temporary top cover 3 and the TBM component 1. The TBM temporary top cover 3 and the TBM permanent top cover can achieve the same sealing effect, which can ensure the accuracy and reliability of the measurement data. The deviation between the measurement results and the actual cladding operating conditions is ≤1%.

[0047] 3. Reusable: Adopting a modular design, all functional components can be disassembled and replaced, with a service life of ≥100 times. It can be used in the filling process of multiple TBM Component 1 units, which greatly reduces equipment costs.

[0048] IV. Convenient hoisting and transportation: The setting of the lifting lug 4 can facilitate the hoisting and transportation of TBM component 1 together with the TBM component packing, testing and transportation integrated support platform of the fusion device as a whole.

[0049] 5. By setting the buffer pad 7, vibrations during transportation can be absorbed, ensuring that the acceleration is <0.1g throughout the entire process.

[0050] VI. Standardized Design: Complies with relevant national and industry standards, and has universal interfaces.

[0051] In some embodiments, the TBM assembly 1 is divided into multiple large sections 103 by partition plates 101, and each large section 103 is further divided into multiple filling areas 1031 by cooling pipes 102. Correspondingly, there are multiple inserts 302, the number of which is the same as the number of large sections 103. The multiple inserts 302 are used to be embedded one-to-one into the interfaces of the multiple large sections 103. For example, the TBM assembly 1 is divided into three large sections 103 by two partition plates 101, and each large section 103 is further divided into three filling areas 1031 by cooling pipes 102. Therefore, the TBM assembly 1 is divided into nine filling areas 1031. Correspondingly, there are three inserts 302, which are embedded correspondingly into the interfaces of the multiple large sections 103. This allows for reliable sealing of the multiple large sections 103 within the TBM assembly 1. It should be noted that the partitioned design of the filling area 1031 within the TBM module 1, achieved through the partition plate 101 and cooling pipes 102, is beneficial in two ways: firstly, it improves the tritium breeding efficiency and overall tritium production capacity; secondly, it enhances heat exchange in the mixed sphere bed, achieving temperature uniformity, avoiding local hot spots, improving the thermal energy conversion efficiency of the fusion energy extraction system, and ensuring stable operation of the blanket under high heat loads; furthermore, it helps reduce inter-particle friction in the mixed sphere bed and improves structural stability.

[0052] In some embodiments, the TBM temporary top cover 3 is made of 316LN stainless steel with a polished surface and a roughness Ra≤1.6μm. 316LN stainless steel has good corrosion resistance, good mechanical strength, and good machinability. The polished surface of the TBM temporary top cover 3 with a surface roughness Ra≤1.6μm facilitates a good seal with the mating surface of the TBM assembly 1, avoids scratching the TBM assembly, and reduces the risk of damage to the microspheres after the insert 302 comes into contact with the top surface of the mixed ball bed filled in the TBM assembly 1. Furthermore, it does not affect the pure water flow trajectory or create turbulence during the filling of the TBM assembly 1.

[0053] In some embodiments, the TBM temporary top cover 3 further includes a first sealing ring 303 and a second sealing ring 304; the first sealing ring 303 is installed in a first sealing groove at the lower outer periphery of the insert; the second sealing ring 304 is installed in a second sealing groove on the top cover body 301 and surrounds the upper outer edge of the insert 302. By providing the first sealing ring 303 and the second sealing ring 304, it is beneficial to ensure that the TBM temporary top cover 3 and the TBM permanent top cover can achieve the same sealing effect, which can ensure the accuracy and reliability of the measurement data, and the deviation of the measurement results from the actual cladding operating conditions is ≤1%.

[0054] In some embodiments, the first sealing ring 303 and the second sealing ring 304 are made of fluororubber. Fluororubber has excellent corrosion resistance and high temperature resistance, can achieve good sealing, and can reduce wear during the installation of the first sealing ring 303 and the second sealing ring 304.

[0055] In some embodiments, the wire diameter of the first sealing ring 303 is 2.5~2.8mm, and the wire diameter of the second sealing ring 304 is 3.4~3.7mm, thereby achieving a good seal and reducing wear during the installation of the first sealing ring 303 and the second sealing ring 304.

[0056] In some embodiments, the main platform 2 is welded from 304L stainless steel profiles. 304L stainless steel profiles have good strength and excellent welding and processing performance.

[0057] In some embodiments, a 316LN stainless steel insulating gasket 6 is also included. The 316LN stainless steel insulating gasket 6 is placed on top of the base plate 201 to separate the TBM assembly 1 from the base plate 201. Since the TBM assembly 1 is made of 316LN, separating the TBM assembly 1 from the base plate 201 by the 316LN stainless steel insulating gasket 6 prevents the TBM assembly 1 from contacting and corroding with dissimilar metals.

[0058] In some embodiments, the thickness of the 316LN stainless steel insulating gasket 6 is 0.5~1mm. A 316LN stainless steel insulating gasket 6 that is too thin is easily damaged and difficult to handle, while one that is too thick is costly and unstable. A 0.5~1mm thick 316LN stainless steel insulating gasket 6 is less prone to damage, easy to handle, easy to place stably, and has a lower cost.

[0059] In some embodiments, the lifting lug plate 4 is welded from 304L stainless steel profiles. Therefore, the lifting lug plate 4 has high strength, low cost, and does not introduce additional corrosion risks.

[0060] In some embodiments, bolt 5 is a grade 10.9 high-strength bolt 5. Grade 10.9 high-strength bolt 5 has high strength and good toughness, which can meet the requirements of sealing and lifting.

[0061] In some embodiments, the buffer pad 7 may be a silicone buffer pad, which is disposed on the lower surface of the base plate 201. The buffer pad 7 has a Shore A50 hardness and is used to absorb vibrations during transport to ensure that the acceleration is <0.1g throughout the entire process.

[0062] To better describe the integrated support platform for the TBM component packing, testing, and transfer of the fusion device according to embodiments of the present invention, the following describes the usage method of the integrated support platform for the TBM component packing, testing, and transfer of the fusion device according to embodiments of the present invention.

[0063] The usage method includes the following steps: S1: By hoisting the TBM module 1, whose internal area has been pre-cleaned and dried, onto the base plate 201 of the main platform 2, and placing the temporary TBM top cover 3 on the TBM module 1, that is, the insert 302 is correspondingly and sealed into the interface of the TBM module 1. At the same time, the opposite sides of the top cover body 301 are placed on the top of the mounting brackets 202 on the opposite sides of the base plate 201. Then, the lifting lugs 4 are placed on the upper surfaces of the opposite sides of the top cover body 301, and the lifting lugs 4, the top cover body 301 and the mounting brackets 202 are fastened together by bolts 5 through the lifting lugs 4, the top cover body 301 and the mounting brackets 202 to form the final assembly. In this way, the problem of irreversible rework in the prior art can be completely solved: all filling quality inspection and process treatment are completed before the TBM is officially covered. If problems such as insufficient filling rate are found, the particles can be directly added, avoiding the risk of scrapping or reworking the entire TBM module. The TBM module 1 is divided into multiple large sections 103 by partition plates 101, and each large section 103 is further divided into multiple filling zones 1031 by cooling pipes 102. For example, the TBM module 1 is divided into three large sections 103 by two partition plates 101, and each large section 103 is further divided into three filling zones 1031 by cooling pipes 102. Therefore, the TBM module 1 is divided into nine filling zones 1031. The partitioned design of the filling zones 1031 within the TBM module 1, achieved by partition plates 101 and cooling pipes 102, is beneficial in two ways: firstly, it improves the tritium breeding efficiency and overall tritium production capacity; secondly, it enhances heat exchange in the hybrid sphere bed, achieving temperature uniformity, avoiding local hot spots, improving the thermal energy conversion efficiency of the fusion energy extraction system, and ensuring stable operation of the blanket under high heat loads; and thirdly, it helps reduce inter-particle friction in the hybrid sphere bed and improves structural stability. The final assembly is then hoisted onto the piezoelectric ceramic precision vibration table via the lifting lug 4. The piezoelectric ceramic precision vibration table is used to compact the filling layer of the mixed ball bed by applying low-intensity vertical vibration.

[0064] S2: Fill each large section 103 within the TBM module 1 with pure water and then drain it. Measure the volumes of the first pure water corresponding to each large section 103 before filling. This measurement is convenient, and the first pure water volume can accurately reflect the sum of the filling volumes of the multiple filling zones 1031 of the corresponding large section 103. Purge and dry the internal area of ​​the TBM module 1 to prepare for subsequent filling of the mixing ball bed.

[0065] S3: Weigh out the multiple sets of Be, each accounting for 70% of the volume, that correspond to the multiple volumes of the first pure water. 12 The mass of Ti particles and Li2TiO3 particles accounting for 30% of the volume, of which Be 12The particle size ratio of Ti to Li₂TiO₃ particles is 10:1. Since the total volume of the multiple filling zones 1031 within a large interval 103 is equal to the corresponding volume of a first pure water unit, the Be content, which accounts for 70% of the total volume of the multiple filling zones 1031 within this large interval 103, can be calculated. 12 The mass of Ti particles and the mass of Li₂TiO₃ particles (30% of the volume) were then precisely weighed, meaning that one volume of pure water corresponded to a set of weighed Be particles (70% of the volume). 12 Ti particles and Li2TiO3 particles accounting for 30% of the volume.

[0066] S4: Place the Be in the same group 12 Ti particles and Li2TiO3 particles are added to a three-dimensional motion mixer and mixed to obtain mixed particles, ensuring that the Lacey mixing index is ≥0.97.

[0067] S5: Remove the temporary top cover 3 of the TBM. In a Class 10,000 clean environment, layer the mixed particles from the three-dimensional motion mixer of the same group from bottom to top and fill them densely into multiple filling areas 1031 in the corresponding large interval 103 of the TBM component 1, and add water-soluble paper pads between adjacent layers.

[0068] By each mixed set of Be 12 Repeat the process of filling Ti particles and Li2TiO3 particles into the corresponding large interval 103 to complete the filling of the remaining large intervals 103.

[0069] The vibration of the vibration table compacts each layer of the mixed ball bed, stabilizes the structure of the mixed ball bed, and flattens the top surface of the current layer to better place the water-soluble paper pad.

[0070] By placing water-soluble paper pads between the layers, the long-range convection channels for segregation are physically cut off, confining the permeation mechanism to a single-layer region. This completely solves the problem of gravity segregation, ensuring the structural stability of the mixed sphere bed and maintaining a Lacey mixing index consistently above 0.95. After filling, the water-soluble paper pads can be completely dissolved and drained using pure water, ensuring no foreign matter remains after filling and guaranteeing the purity of the cladding design, without affecting neutronics and thermo-hydraulic performance.

[0071] S6: Install the temporary top cover 3 of the TBM, measure the filling rate of the mixed particles in each large section 103. If the filling rate does not meet the requirements, refill. Dissolve and drain all water-soluble paper pads with water to ensure that there are no foreign objects left after filling, ensuring the purity of the cladding and not affecting the neutronics and thermal-hydraulic performance. Test the residual moisture in the TBM module 1. If the residual moisture does not meet the requirements, purge and dry the internal area of ​​the TBM module 1 again to ensure that there are no foreign objects left after filling, ensuring the purity of the cladding and not affecting the neutronics and thermal-hydraulic performance. Verify the purging pressure drop inside the TBM module 1 to ensure the filling quality. After the filling rate, residual moisture and purging pressure drop verification all meet the requirements, remove the temporary cover plate of the TBM module 1 and install the permanent cover plate of the TBM module 1.

[0072] S7: An accelerometer with an accuracy of 0.02g is installed on the TBM component packing, testing, and transport integrated support platform of the fusion device according to this embodiment of the invention. The outer surface of the TBM component 1 and the TBM component packing, testing, and transport integrated support platform of the fusion device according to this embodiment of the invention are cleaned and then the TBM component packing, testing, and transport integrated support platform and the TBM component 1 of the fusion device according to this embodiment of the invention are cleaned and sealed, leaving only the lifting lug 4 and the accelerometer reading position exposed on the outside of the seal for transport and hoisting.

[0073] Compared with existing technologies, this method has the following significant advantages: I. A fundamental breakthrough has been achieved, completely solving the problem of gravity segregation. By setting water-soluble paper pads between layers, the long-range convection channels for segregation are physically cut off, confining the permeation mechanism to a single area and ensuring that the Lacey mixing index remains stable at over 0.95.

[0074] Second, it achieves a perfect "trace-free" design concept: the layering function is achieved by using a completely soluble water-soluble paper pad, and there is no foreign matter residue after filling, which ensures the purity of the cladding design and does not affect the neutronics and thermal-hydraulic performance.

[0075] Third, the quantitative detection of residual moisture was achieved through the combined detection method of "residual moisture detection + purging pressure drop", which transformed the filling quality from "experience judgment" to "data verification".

[0076] IV. After filling is completed, the filling quality is ensured to meet the requirements by measuring the filling rate, residual moisture content, and purging pressure reduction test.

[0077] V. Significantly Improved Filling Rate: By adopting a customized water-soluble paper pad with zoned and layered vibration compaction process, the overall filling rate of the mixed ball bed can be stably maintained at 75%-76%, close to the maximum value calculated by Westman theory.

[0078] VI. Significantly reduced particle breakage rate: The use of three-dimensional motion mixing particles and low-intensity vibration avoids the high-speed impact of pneumatic conveying, thus reducing the particle breakage rate after loading.

[0079] VII. High degree of engineering: The entire process flow is clear, the parameters are specific, and all equipment used is general-purpose or easy to modify.

[0080] In some embodiments, step S3 further includes: measuring Be 12 Saturated water absorption coefficient of Ti particles.

[0081] Step S6 specifically includes the following sub-steps: S601: Install the temporary top cover 3 of the TBM, fill multiple large sections 103 inside the TBM module 1 with pure water and then drain it, measure the volume of the second pure water corresponding to the multiple large sections 103 after filling; blow and dry the internal area of ​​the TBM module 1.

[0082] S602: Composed of various volumes of first pure water, various volumes of second pure water, and Be 12 The saturated water absorption coefficient of Ti particles and the mass of Li2TiO3 weighed in each first pure water volume were used to calculate the filling rate of the mixed ball bed in each large interval 103 for the first time.

[0083] S603: After the initial calculation of each fill rate meets the requirements, inject pure water into TBM module 1 to completely dissolve all water-soluble paper pads, drain and measure the third drainage volume of each large section 103, and recalculate the fill rate of the mixed ball bed in each large section 103. If the deviation between the two calculated fill rates of the mixed ball bed in each large section 103 is ≤ ±0.5%, then the fill rate meets the requirements; purge and dry the internal area of ​​TBM module 1.

[0084] The proposed modified water volume measurement method improves the accuracy of filling rate measurement.

[0085] S604: Perform residual moisture detection and purging pressure drop test on the interior of TBM module 1; then remove the temporary cover plate of TBM module 1 and install the permanent cover plate of TBM module 1. Residual moisture detection enables quantitative detection of residual moisture, transforming filling quality from "experience-based judgment" to "data-driven verification." The purging pressure drop test ensures filling quality.

[0086] In some embodiments, step S1 specifically includes the following sub-steps: S101: Pre-clean and dry the internal area of ​​TBM module 1, hoist TBM module 1 onto main platform 2, and place 0.5~1mm 316LN stainless steel shims on the upper surface of the base plate 201 of main platform 2. S102: Use four synchronous jacks, symmetrically arranged at the four corners of the TBM temporary top cover 3, to lift the TBM temporary top cover 3 evenly, and control the horizontal deviation of the TBM temporary top cover 3 to <0.1mm during the lifting process. Then control the jacks to slowly lower the TBM temporary top cover 3 and install it onto the TBM assembly 1. S103: Place the lifting lug 4 into the corresponding position of the TBM temporary top cover 3, and use 10.9 grade high strength bolts 5 to connect the main platform 2, TBM temporary top cover 3, and lifting lug 4. After manually tightening, apply symmetrical tightening torque to ensure that the TBM temporary top cover 3 evenly compacts the sealing ring. S104: Hoist the final assembly onto the customized piezoelectric ceramic precision vibration table; connect the gas purging pipelines 104, which connect the upper and lower parts of TBM component 1 to the corresponding large sections 103, to the integrated test system pipelines. The integrated test system pipelines are connected to the pure water circulation system, argon drying and purging system, and helium leak detection system within the integrated test system. These components—the integrated test system pipelines, the pure water circulation system, the argon drying and purging system, and the helium leak detection system—are all general-purpose or easily modified equipment.

[0087] In some embodiments, step S2 specifically includes the following sub-steps: S201: Switch to pure water circulation system. The gas purging pipe 104 at the bottom of TBM component 1 is connected to the inlet / drainage pipe respectively. The gas purging pipe 104 at the top of TBM component 1 is connected to the overflow pipe respectively. There is a liquid level switch on the overflow pipe.

[0088] S202: Open the inlet valve of the inlet / drain pipe until the resistivity is ≥18.2MΩ. 25°C pure water is introduced into the overflow pipe connected to the upper gas purging pipeline 104, triggering the liquid level switch and closing the water inlet valve; after standing for 9-12 minutes, the drain valve of the inlet / drainage pipeline is opened to discharge the pure water in each large interval 103 into the metering container, and the first pure water volume corresponding to each large interval 103 before filling is recorded.

[0089] Through steps S201 and S202, the volume of the first pure water corresponding to each large interval 103 before filling can be accurately measured.

[0090] S203: Switch to the argon drying and purging system. The gas purging pipe 104 at the top of TBM component 1 is connected to the inlet pipe, and the gas purging pipe 104 at the bottom of TBM component 1 is connected to the exhaust pipe. Continuously introduce 150℃ drying argon gas for 1-1.1 hours to dry the internal area of ​​TBM component 1.

[0091] In some embodiments, step S3 specifically includes the following sub-steps: S301: Be particles with an effective particle size of 5mm are obtained through grading and sieving. 12 Ti particles are graded, sieved, and dust is removed to obtain Li2TiO3 particles with an effective particle size of 0.5 mm.

[0092] S302: The graded and sieved Li2TiO3 was subjected to vacuum drying, and then the saturated water absorption coefficient of the Li2TiO3 particles was tested.

[0093] S303: Be after grading and screening 12 In Ti particles and Li₂TiO₃ particles, multiple sets of Be, each accounting for 70% of the volume, were precisely weighed using an electronic balance with an accuracy of ±1g, corresponding to multiple volumes of first pure water. 12 The mass of Ti particles and Li2TiO3 particles accounting for 30% of the volume.

[0094] In some embodiments, step S4 specifically includes the following sub-steps: S401: Place the Be in the same group 12 Ti particles and Li₂TiO₃ particles were simultaneously added to a three-dimensional motion mixer. The speed of the three-dimensional motion mixer was controlled at 15-20 rpm, and the mixing time was controlled at 10-15 minutes to obtain mixed particles. Be was then mixed using a three-dimensional motion mixer. 12 Ti particles and Li2TiO3 particles can prevent particle breakage.

[0095] S402: Take three parallel samples from each of the upper, middle, and lower positions in the three-dimensional motion mixer and measure the Lacey mixing index. Ensure that the Lacey mixing index after premixing is ≥0.97 before proceeding to the next filling step.

[0096] In some embodiments, step S5 specifically includes the following sub-steps: S501: Remove the temporary top cover 3 of the TBM. In a Class 10,000 clean environment with a temperature of 20-25℃ and a relative humidity of 30-40%, use a hopper to fill the mixed particles from the three-dimensional motion mixer. Then, fill the multiple filling zones 1031 of the corresponding large interval 103. When the layer thickness reaches 48-52mm, start the piezoelectric ceramic precision vibration table and simultaneously introduce a small amount of dry argon gas. Apply vertical vibration with a frequency of 20-30Hz and an amplitude of 0.1-0.2mm for 30-60 seconds to initially compact the mixed particles of the current layer.

[0097] By using a hopper to fill the three-dimensional motion mixer with mixed particles, and then filling the multiple filling zones 1031 corresponding to the large interval 103, particle breakage can be avoided. During vibration of the piezoelectric ceramic precision vibration table, a small amount of dry argon gas is introduced, and vertical vibration with a frequency of 20-30Hz and an amplitude of 0.1-0.2mm is applied for 30-60 seconds. This ensures that the current layer is compacted, stabilizing the mixed ball bed structure and flattening the top surface of the current layer, while also preventing particle breakage.

[0098] S502: Add a water-soluble paper pad to the upper surface of the initially compacted current layer, and then repeat the filling process in step S501 to complete the filling of the corresponding large interval 103 layer by layer.

[0099] In some embodiments, step S601 further includes the step of: S6011: Install the TBM temporary top cover 3, switch to the pure water circulation system, open the inlet valve of the inlet / drainage pipe, and introduce water with a resistivity ≥18.2MΩ into the TBM component 1. Fill the container with 25°C pure water until it enters the overflow pipe connected to the upper gas purging line 104, triggering the level switch and closing the inlet valve. Let it stand for 9-12 minutes, then open the drain valve of the inlet / drainage line to drain the pure water in each large section 103 into the metering container, and record the second pure water volume corresponding to each large section 103 after filling.

[0100] Step S6011 allows for the precise measurement of the second pure water volume corresponding to the filling of each large interval 103.

[0101] S6012: Switch to the argon drying and purging system. The gas purging pipe 104 at the top of the TBM component 1 is connected to the inlet pipe, and the gas purging pipe 104 at the bottom of the TBM component 1 is connected to the exhaust pipe. 150°C drying argon gas is continuously introduced for 1-1.1 hours to dry the internal area of ​​the TBM component 1.

[0102] In some embodiments, in step S602, the initial fill rate of each large interval 103 is calculated as (A - B - k). m_Li) / A 100%, where k is the saturated water absorption coefficient of Li2TiO3 particles, which is the coefficient of the saturated water absorption volume of Li2TiO3 particles per unit mass, obtained through experimental measurement; m_Li is the total mass of Li2TiO3 particles corresponding to each large interval 103; A is the first pure water volume corresponding to each large interval 103 before filling; B is the second pure water volume corresponding to each large interval 103 after filling. If the initial calculated filling rate does not meet the requirements, refilling is required.

[0103] Compared with the existing overall weighing method for measuring filling rate, this modified water volume metering method effectively improves the accuracy of filling rate measurement.

[0104] In some cases, step S603 includes: S6031: After the initial calculation of each fill rate meets the requirements, disable the liquid level switch of TBM component 1, open the water inlet valve, add oxygen inhibitor to the pure water, allow water to enter through the gas purge pipe 104 at the bottom of TBM component 1, and allow water to exit through the gas purge pipe 104 at the top of TBM component 1. Then, circulate 60℃ pure water into each large compartment 103 for 20-25 minutes at a flow rate of 0.5-1.0 m³ / h to completely dissolve all water-soluble paper partitions, and then close the water inlet valve.

[0105] The oxygen inhibitor added to the pure water is 0.1 ppm sodium nitrite, which avoids chemical reaction with Li2TiO3 and effectively protects Li2TiO3.

[0106] S6032: After standing for 9-12 minutes, open the drain valve to drain the water from multiple large sections 103, and measure the corresponding third drainage volume of the water drained from each of the multiple large sections 103. The recalculated filling rate of each large section 103 is = (A - B' - k) m_Li) / A 100%, where k is the saturated water absorption coefficient of Li2TiO3 particles, which is the coefficient of the saturated water absorption volume of Li2TiO3 particles per unit mass, obtained through experimental measurement; m_Li is the total mass of Li2TiO3 particles corresponding to each large interval 103; A is the first pure water volume corresponding to each large interval 103 before filling; B' is the third drainage volume corresponding to each large interval 103. If the deviation of the filling rate of the two calculations corresponding to the mixed ball bed in each large interval 103 is ≤ ±0.5%, then the corresponding filling rate meets the requirements; otherwise, the mixed ball bed in the corresponding large interval 103 is refilled.

[0107] S6033: Switch to the argon drying and purging system. The gas purging pipe 104 at the top of the TBM component 1 is connected to the inlet pipe, and the gas purging pipe 104 at the bottom of the TBM component 1 is connected to the exhaust pipe. Dry argon gas at 150℃ is continuously introduced for purging. The argon gas flow rate is 0.5-1.0 m³ / h, and the purging time is 2-2.5 hours.

[0108] S6034: After purging, close the inlet and outlet valves to stabilize the pressure inside the mixing ball bed at 0.1 MPa; maintain the temperature of the mixing ball bed at 150℃, let it stand for 2-2.5 hours, and record the pressure change ΔP. Quantitative detection of residual moisture can be achieved through argon pressure drop detection, transforming filling quality from "experience-based judgment" to "data-driven verification."

[0109] In some embodiments, step S604 includes: S6041: The composition of the gas inside TBM module 1 was analyzed using a residual gas analyzer, confirming that the H2O partial pressure is <1×10⁻⁶. - ³Pa serves as the ultimate basis for determining whether residual moisture meets standards. Quantitative detection of residual moisture is achieved through a residual gas analyzer, transforming filling quality from "experience-based judgment" to "data-driven verification."

[0110] S6042: Switch to the helium leak detection test system and perform a purging pressure drop test: Introduce helium into TBM component 1 to replace the argon gas, and then perform pressure drop detection to obtain the measured pressure drop value. Sauter average particle size As a characteristic particle size, a binary mixing correction coefficient of 0.92 is introduced to calculate the theoretical predicted value of pressure drop for the Ergun equation; If the deviation between the measured pressure drop and the theoretical predicted pressure drop is within ±10%, then the pressure drop acceptance is qualified. S6043: Remove the temporary cover plate of TBM component 1, install the permanent cover plate of TBM component 1, and finally, use helium mass spectrometry to test the sealing performance, requiring a leak rate ≤1×10⁻⁶. -9 Pa m³ / s.

[0111] In some embodiments, the water-soluble paper pad is adapted to the cross-section of the corresponding filling area 1031, and the water-soluble paper pad is a high-purity polyvinyl alcohol pad. The high-purity polyvinyl alcohol pad is a completely soluble nuclear industry-grade water-soluble paper, placed between the layers of the filled mixed ball bed. After filling, there are no foreign matter residues, ensuring the purity of the cladding design and not affecting neutronics and thermo-hydraulic performance.

[0112] In some embodiments, the chemical technical requirements for water-soluble paper mats are as follows: high-purity polyvinyl alcohol fiber is used as the main raw material; degree of alcoholysis 92%-94% (warm water soluble type); degree of polymerization 1700-2400; purity ≥99.99%; ash content ≤0.1% (800℃ ignition method, GB / T 742-2008); total heavy metal content <1ppm, of which Pb <0.05ppm, Cd <0.01ppm, As <0.01ppm, Hg <0.005ppm (ICP-MS method, GB / T 40272-2021); ion residue: Cl... - <1ppm, SO4 2- <1ppm (ion chromatography); dissolved residue: <10ppm; radiation stability: at 10 6Under the neutron-γ mixed field of Gy, the main degradation products of water-soluble paper pads are H2O and CO2, while trace amounts of acetic acid (<0.1ppm) will be carried away by helium purging.

[0113] In some embodiments, the physical properties of the water-soluble paper pad are required to be as follows: water solubility time: complete dissolution in water at 50°C for ≤30 seconds with no adhesive residue; temperature resistance: able to withstand short-term high temperatures (e.g., 2 hours at 180°C) without decomposition; irradiation stability: at this irradiation dose, its mechanical properties can maintain the necessary operational strength, and the irradiation degradation products do not affect the cladding function.

[0114] In some embodiments, the hot pressing process requirements for water-soluble paper pads are as follows: mold material: 316L stainless steel, surface mirror polished (Ra≤0.2μm); mold preheating temperature: 90-100℃; hot pressing pressure: 0.3-0.5MPa; holding time: 15-30 seconds; cooling and demolding: keep the pressure constant, cool with water to below 40℃ for demolding; any release agent is strictly prohibited, and smooth demolding is achieved through mold mirror polishing and slight draft angle; molding environment: Class 10,000 cleanroom, temperature 20-25℃, relative humidity 30%-40%.

[0115] In summary, the integrated support platform for filling, testing, and transporting TBM components in the fusion device of this invention is an auxiliary device for the filling process of a mixed sphere bed of magnetic confinement nuclear fusion experimental blanket components. It is particularly suitable for Be particles with a large particle size ratio of 10:1 (5mm particle size). 12 The process includes rinsing, baking, filling rate determination and residual moisture detection of Ti (Li2TiO3 with a particle size of 0.5mm) and mixed ball bed with a volume ratio of 7:3, as well as the packaging, transportation and hoisting of TBM module 1.

[0116] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An integrated support platform for TBM component packing, testing, and transportation in a fusion device, characterized in that, include: The main platform includes a base plate and mounting brackets extending upward from opposite sides of the base plate for placing TBM components on the base plate and between the mounting brackets; TBM temporary top cover, the TBM temporary top cover includes a top cover body and an insert protruding downward from the lower surface of the top cover body, the opposite sides of the top cover body are used to be placed on the corresponding mounting bracket, and the insert is used to detachably seal and embed into the interface of the TBM assembly; Lifting lugs, which are used to be placed on the upper side of opposite sides of the top cover body; Bolts are used to pass through the lifting lug plate, the top cover body, and the mounting bracket to fasten the lifting lug plate, the top cover body, and the mounting bracket; A cushioning pad is disposed on the lower surface of the base plate; The TBM component is divided into multiple large sections by partition plates, and each large section is further divided into multiple filling areas by cooling pipes; correspondingly, there are multiple embeddings, the number of which is the same as the number of large sections, and the multiple embeddings are used to be embedded into the interfaces of the multiple large sections in a one-to-one correspondence. The TBM temporary top cover also includes a first sealing ring and a second sealing ring; the first sealing ring is installed in a first sealing groove at the lower outer periphery of the insert; the second sealing ring is installed in a second sealing groove on the top cover body and surrounds the upper outer edge of the insert.

2. The integrated support platform for TBM component packing, testing, and transportation of fusion devices according to claim 1, characterized in that, The temporary top cover of the TBM is made of 316LN stainless steel with a polished surface and a roughness Ra≤1.6μm.

3. The integrated support platform for TBM component packing, testing, and transportation of fusion devices according to claim 1, characterized in that, The first sealing ring and the second sealing ring are made of fluororubber.

4. The integrated support platform for TBM component packing, testing, and transportation of fusion devices according to claim 3, characterized in that, The wire diameter of the first sealing ring is 2.5~2.8mm, and the wire diameter of the second sealing ring is 3.4~3.7mm.

5. The integrated support platform for TBM component packing, testing, and transportation of fusion devices according to claim 1, characterized in that, The main platform is welded from 304L stainless steel profiles.

6. The integrated support platform for TBM component packing, testing, and transportation of fusion devices according to claim 5, characterized in that, It also includes a 316LN stainless steel isolation pad, which is placed on top of the base plate to separate the TBM assembly from the base plate.

7. The integrated support platform for TBM component packing, testing, and transportation of fusion devices according to claim 6, characterized in that, The thickness of the 316LN stainless steel insulating gasket is 0.5~1mm.

8. The integrated support platform for TBM component packing, testing, and transportation of fusion devices according to claim 1, characterized in that, The lifting lugs are welded from 304L stainless steel profiles.

9. The integrated support platform for TBM component packing, testing, and transportation of fusion devices according to claim 1, characterized in that, The bolts used are 10.9 grade high-strength bolts.

10. The integrated support platform for TBM component packing, testing, and transportation of fusion devices according to claim 1, characterized in that, The buffer pad is a silicone buffer pad, and the hardness of the buffer pad is Shore A50.

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