A tool and method for adjusting the position of a cold screen flange of a vacuum chamber of a fusion reactor

Abstract

The application discloses a tool for adjusting the position of a vacuum chamber cold shield flange, comprising a first mounting plate and a second mounting plate fixed on two adjacent vacuum chamber cold shield flanges respectively, and the two mounting plates are fixed by a welding bolt on the vacuum chamber cold shield flange; one side of the second mounting plate extends to the surface of the first mounting plate, a threaded hole is arranged on the first mounting plate, and a conical positioning hole is arranged on the second mounting plate; the tool further comprises a positioning assembly, the positioning assembly comprises a conical positioning plug coaxially arranged on an adjusting screw, the adjusting screw is fixed in the threaded hole in a threaded cooperation mode, the positioning plug is coaxially threaded on the adjusting screw, and when the positioning plug rotates around the adjusting screw, the positioning plug is coaxially embedded in the conical positioning hole, so that the two adjacent vacuum chamber cold shield flanges are precisely butted. The tool can quickly and accurately adjust the position of the vacuum chamber cold shield flange.

Description

Technical Field

[0001] This invention relates to the field of cold screen assembly technology for fusion reactor vacuum chambers, and more particularly to a tooling and method for adjusting the position of the flange of a cold screen in a fusion reactor vacuum chamber. Background Technology

[0002] Magnetic confinement fusion is considered the most promising way to solve humanity's energy crisis. Tokamak devices are among the most effective methods for studying magnetic confinement fusion energy. The main body of such a device consists of a divertor, cladding, vacuum chamber, Dewar, cold shield, and magnet. The primary function of the cold shield is to provide an opaque thermal barrier between the cryogenic superconducting magnet and other components operating in cryogenic environments, and other hot components. During device operation, it reduces the thermal load on the superconducting magnet and cryogenic components caused by thermal radiation or conduction. Therefore, the proper installation of the cold shield is crucial for the operation of the entire device. The entire cold shield system consists of a bottom cold shield, a middle cold shield, a vacuum chamber cold shield, and an upper cold shield, forming a thin-walled cylindrical structure. The vacuum chamber cold shield needs to be divided into multiple segments and installed in a ring within the main body hall. These segments are connected by cold shield flanges, requiring extremely precise positioning of each vacuum chamber cold shield segment to ensure that the flanges of subsequent cold shield segments align correctly.

[0003] However, the vacuum chamber cold shield is located between the TF magnet and the vacuum chamber. After the cold shield sector is in place, adjusting the cold shield's flange requires traversing the gap between adjacent vacuum chambers. This space is extremely small, making the adjustment of the cold shield's flange position very difficult. During fusion reactor installation, adjusting the cold shield's flange is often addressed by custom-made splice blocks. This involves measuring the misalignment of adjacent cold shield flanges after placement and custom-making the splice blocks used for connecting the flanges to compensate for installation errors. This method suffers from large customization workloads and long installation cycles. The number of splice blocks used for the entire cold shield flange is enormous. Reverse engineering after measuring the flange placement error requires dimensional measurement, reverse drawing, fabrication, and on-site installation—a very lengthy process that consumes significant manpower and resources.

[0004] Therefore, it is crucial to conveniently and reliably adjust the flange of the vacuum chamber cold screen in a confined space, realize the adjustment of the flange position after the vacuum chamber cold screen is in place, reduce the ring assembly time of the vacuum chamber cold screen in the main hall, and realize the direct installation of splicing parts within the error range. How to reduce the installation cost of the vacuum chamber cold screen and solve the assembly problem of being forced to use customized connectors because the flange of the cold screen cannot be adjusted during the traditional vacuum chamber cold screen installation process is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In light of the above description of the current state of the technology, the purpose of this invention is to provide a tooling and method for adjusting the position of the cold screen flange in a fusion reactor vacuum chamber, so as to better solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention employs a tooling for adjusting the position of the cold screen flange of a fusion reactor vacuum chamber. The tooling includes a first mounting plate and a second mounting plate, respectively fixed to the cold screen flanges of two adjacent vacuum chambers. The two mounting plates are fixedly installed by welding bolts on the cold screen flanges. One side of the second mounting plate extends to the surface of the first mounting plate. The first mounting plate has a threaded bottom hole, and the second mounting plate has a conical positioning hole. The tooling also includes a positioning assembly, which includes a conical positioning plug coaxially mounted on an adjusting screw. The adjusting screw is threadedly fixed within the threaded bottom hole. The positioning plug is coaxially threaded onto the adjusting screw, and when the positioning plug rotates around the adjusting screw, it coaxially embeds into the conical positioning hole, thereby ensuring precise alignment of the cold screen flanges of two adjacent vacuum chambers.

[0007] Furthermore, a transmission sleeve is coaxially mounted on the large end face of the conical plug, and the inner wall of the transmission sleeve does not contact the adjusting screw. The transmission sleeve includes a hexagonal nut-shaped driving part and a disc-shaped contact plate. The driving part and the contact plate are coaxially integrally formed. The contact plate is connected to the large end face of the conical plug by an elastic fastener. Before the conical plug is inserted into the conical positioning hole, the transmission sleeve rotates integrally with the conical plug. After the conical plug is inserted into the hole, continuing to rotate the transmission sleeve will cause it to rotate relative to the conical plug through the contact plate.

[0008] Furthermore, the elastic fastener is a torsion spring, which is coaxially disposed between the conical plug and the contact disc, and its two ends are respectively used to connect the end faces of the conical plug and the contact disc.

[0009] Furthermore, the elastic fastener is an arc-shaped preload spring; the end face of the conical plug is provided with an arc-shaped groove, and the preload spring is provided in the groove. One end of the preload spring is connected to one end of the groove, and the other end is connected to a slider that is slidably installed in the groove; a transmission block is fixedly protruding from the end face of the contact plate. The transmission block is inserted into the groove and is in close contact with the side of the slider so that the preload spring is in a compressed state; the elastic force of the preload spring must prevent the conical plug from being further compressed before it is embedded in the conical positioning hole.

[0010] Furthermore, the groove is a T-shaped groove, and an adjusting block, also T-shaped, is slidably installed at the end opposite to the preload spring. A locking screw is screwed into the end of the adjusting block to fix the adjusting block in the corresponding position in the groove, thereby changing the compression of the preload spring when the transmission block is inserted between the slider and the adjusting block.

[0011] Furthermore, the first mounting plate and the second mounting plate each include a rectangular strip-shaped first connecting plate and a second connecting plate, which are used to be detachably connected to the welding bolts on the corresponding cold screen flange of the vacuum chamber; the first connecting plate is provided with the threaded bottom hole, and the second connecting plate is integrally fixed with a cover plate, the positioning conical hole is provided on the cover plate, and the cover plate covers the surface of the first connecting plate.

[0012] Furthermore, each first connecting plate is provided with two threaded bottom holes, and each cover plate is provided with two positioning conical holes, so that the positioning conical holes correspond one-to-one with the threaded bottom holes.

[0013] Furthermore, it also includes an adjustment mounting assembly, which includes an inner rod and a fastening sleeve coaxially disposed outside the inner rod. One end of the inner rod is rotatably connected to the top end of the adjusting screw and can move axially together. The top end of the adjusting screw can extend into the bottom port of the fastening sleeve and can rotate as a whole to rotate the adjusting screw.

[0014] Furthermore, a locking nut is threaded on the outer side of the top of the fastening sleeve. The locking nut has a threaded hole in the center that mates with the thread of the inner rod. The locking nut is used to engage with the threads of the fastening sleeve and the inner rod in opposite directions. This is so that when the locking nut is tightened clockwise on the top of the fastening sleeve, the inner rod, along with the adjusting screw, extends to its limit inside the bottom port of the fastening sleeve during the clockwise rotation of the inner rod.

[0015] Meanwhile, this invention also proposes a method for adjusting the position of the cold screen flange of a fusion reactor vacuum chamber. Specifically, the method uses the aforementioned tooling for adjusting the position of the cold screen flange of a fusion reactor vacuum chamber, and includes the following steps: fixing the first mounting plate and the second mounting plate onto the two cold screen flanges of the vacuum chamber respectively, ensuring that the fastening nuts screwed on the welding bolts are reliably tightened; screwing the adjusting screw into the threaded bottom hole on the first mounting plate to install the positioning component; using a torque sleeve on the positioning plug, rotating the positioning plug so that the positioning plug is installed in the conical positioning hole on the second mounting plate, during which the two cold screen flanges of the vacuum chamber move together with their respective mounting plates, ultimately achieving the splicing of the two cold screen flanges of the vacuum chamber.

[0016] This invention discloses a tooling and method for adjusting the position of the cold screen flange in a fusion reactor vacuum chamber. It primarily employs a conical positioning adjustment method to adjust the position of the cold screen flange. By utilizing the action mechanism where the conical plug engages with the positioning conical hole, the corresponding mounting plate and its connected cold screen flange also assume their positions, achieving precise control of the cold screen flange position. This directly enables misalignment adjustment in three directions, eliminating the need for individual direction adjustments. Through alternating adjustments using multiple tooling connected to multiple positions, the precise positioning of the cold screen flange is ultimately achieved.

[0017] The adjustment method based on this fixture enables operation in confined spaces, is simple to implement, and has low manufacturing costs. By adjusting the position of the cold screen flange in the vacuum chamber, the assembly time of the cold screen in the main unit hall is reduced, allowing for direct installation of splicing components within the tolerance range. This reduces the installation cost of the cold screen. It also solves the assembly problem of traditional cold screen installations where the flange cannot be adjusted, forcing the use of custom-made connectors. Summary of the Invention

[0018] The following are auxiliary illustrations used to explain some specific embodiments of the present invention. The accompanying drawings mainly describe the principles of specific operation execution structures or methods of some embodiments of the present invention, but this does not mean that the physical structure or operation steps of the present invention can only be as shown in the figures.

[0019] Figure 1 This is a schematic diagram of the structure of a vacuum chamber cold shield to be assembled; Figures 2-3 All are Figure 1 Enlarged view of point A in the middle; Figure 4 This is a cross-sectional view of the adjusting screw being installed in the threaded bottom hole using this tooling; Figure 5 This is a schematic diagram showing a state where the positioning plug and the positioning tapered hole are not yet coaxially installed in place; Figure 6 This is a schematic diagram of the positioning assembly when the inner rod inside the fastening sleeve is connected to the transmission sleeve and the positioning plug is separated; Figure 7 yes Figure 6 Enlarged view at point B (separation of the transmission sleeve and positioning plug in the positioning assembly); Figure 8 yes Figure 6 Enlarged view of point C in the middle; Figure 9 This is a schematic diagram of the state during the splicing process of two adjacent vacuum chamber cold screens; Figure 10 yes Figure 9 Enlarged view of point b in the middle; Figure 11 This is a cross-sectional diagram of a positioning plug with a slider inside; Figure 12 This is a schematic diagram of the contact plate end face; Figure 13 This is a schematic diagram showing the position when an adjustment block is also installed in the groove of the positioning plug; Figure 14 yes Figure 13 A cross-sectional view of the locking screw within the elliptical region; Figure 15 This is a schematic diagram showing the inner rod and the fastening sleeve connected together with the adjusting screw (connecting positioning assembly).

[0020] Component labeling description: Vacuum chamber cold screen a, first flange a1, second flange a2, fastening nut 1, second mounting plate 2, cover plate 201, second connecting plate 202, first mounting plate 3, adjusting screw 4, transmission sleeve 5, positioning plug 6, groove 601, contact plate 7, torque sleeve 8, threaded bottom hole 9, inner rod 10, locking nut 11, fastening sleeve 12, welding bolt 13, washer 14, extended sleeve 15, preload spring 16, slider 17, transmission block 18, adjusting block 19, locking screw 20, spring 21. Summary of the Invention

[0021] The embodiments of the present invention will be fully described below. Some core features of the embodiments will be specifically illustrated in the accompanying drawings, wherein the same or similar reference numerals in the drawings represent the same or similar technical features, or structures, steps, or processes with similar functions. Other embodiments derived by those skilled in the art based on these embodiments without requiring creative effort are also within the protection scope of the present invention.

[0022] As a specific embodiment of the present invention, a tooling for adjusting the position of the cold screen flange in a fusion reactor vacuum chamber is described in detail below, for installing such... Figure 1 The vacuum chamber cold screen 'a' shown is specifically used to adjust the position of the flanges of adjacent vacuum chamber cold screens during assembly, such as... Figures 2-4 Its structure mainly includes a first mounting plate 3 and a second mounting plate 2, which are respectively fixed on the flanges of the cold screens of two adjacent vacuum chambers, and the two mounting plates are connected by means of a first mounting plate 3 and a second mounting plate 2 on the flanges of the cold screens of the vacuum chambers. Figure 2 , Figure 3 and Figure 9 Use the welding bolts 13 marked in the diagram for fixing and installation. During the specific fabrication process, it can be done as follows: Figures 2-3 One side of the second mounting plate 2 extends to the surface of the first mounting plate 3. The first mounting plate 3 has a threaded bottom hole 9, and the second mounting plate 2 has a conical positioning hole. The mounting plate and the flange can also be positioned as follows: Figure 4 , Figure 9A shim 14 is provided to protect the flanges. This embodiment also includes a positioning component, which is mainly used to directly adjust the two flanges, for example, adjusting the position of the first flange a1 and the second flange a2. Specifically, please refer to [reference needed]. Figure 4 and Figure 7 This positioning assembly includes a conical positioning plug 6, which is coaxially mounted on an adjusting screw 4. The adjusting screw 4 is threadedly fixed in a threaded bottom hole 9, thus enabling the installation of this positioning assembly. In this embodiment, the positioning plug 6 is coaxially threaded onto the adjusting screw 4. After fixing the adjusting screw 4, the positioning plug 6 can be rotated using tools such as a socket wrench. As the positioning plug 6 rotates around the adjusting screw 4, it will move axially by threaded feed, and then it can be coaxially embedded into the conical positioning hole. During this embedding process, the cold screen flanges of two adjacent vacuum chambers can be precisely aligned.

[0023] As one of the specific implementation structures, such as Figure 3 , Figure 4 , Figure 7 As shown, a transmission sleeve 5 is coaxially mounted on the large end face of the conical plug. Ideally, the inner wall of the transmission sleeve 5 should not contact the adjusting screw 4; it should only be coaxially mounted on the outside of the adjusting screw 4. In specific manufacturing, the transmission sleeve 5 includes a hexagonal nut-shaped drive part (not shown separately in the figure) and a disc-shaped contact plate 7 (not shown separately in the figure). The drive part and the contact plate 7 are coaxially integrally formed. If necessary, multiple contact plates 7 can be fixedly stacked together to change the thickness. The contact plate 7 is connected to the large end face of the conical plug by elastic fasteners. These elastic fasteners ensure that the transmission sleeve 5 and the positioning plug 6 are integrated under normal conditions, and they are axially fed together under external force. Specifically: Before the conical plug is inserted into the conical positioning hole, the transmission sleeve 5 rotates together with the conical plug. After the conical plug is inserted into the positioning conical hole, it can no longer move axially. Therefore, if the transmission sleeve 5 continues to rotate at this time, it will naturally rotate relative to the conical plug by slipping. That is, the contact plate 7 rotates relative to the conical plug, which avoids the positioning plug 6 from excessively squeezing the two mounting plates when it is uncertain whether the torque has stopped input, which would damage the cold screen edge of the vacuum chamber. Moreover, when slippage is detected, the transmission sleeve 5 can be stopped to visually confirm that the positioning plug 6 has been installed in place.

[0024] In the above embodiments, the elastic fastener used is a torsion spring, which is coaxially disposed between the conical plug and the contact disc 7, and its two ends are respectively used to connect the end faces of the conical plug and the contact disc 7. Furthermore, the elastic fastener can also be as follows: Figure 11The preload spring 16 is shown in an arc shape. An arc-shaped groove 601 is provided on the end face of the conical plug. The preload spring 16 is housed within the groove 601. One end of the preload spring 16 is connected to one end of the groove 601, and the other end is connected to a slider 17 slidably mounted within the groove 601. Furthermore, as shown... Figure 12 A transmission block 18 is fixedly fixed to the end face of the contact plate 7. The transmission block 18 is inserted into the groove 601 and is in close contact with the side of the slider 17 so that the preload spring 16 is in a compressed state. Thus, the transmission sleeve 5 and the positioning plug 6 are normally connected as one unit and can move synchronously. Therefore, during installation, the elastic force generated by the selected preload spring 16 should be such that the conical plug is not further compressed before it is embedded in the conical positioning hole, that is, the slider 17 should not slide at all during this period. During manufacturing, the groove 601 is a T-shaped groove, and an adjusting block 19, which is also T-shaped, is slidably installed at the end opposite to the preload spring 16. A locking screw 20 is screwed into the end of the adjusting block 19 to fix the adjusting block 19 in the corresponding position in the groove 601. Changing the amount of compression of the preload spring 16 when the transmission block 18 is inserted between the slider 17 and the adjusting block 19 changes the amount of torque required when the transmission sleeve 5 and the positioning plug 6 rotate relative to each other.

[0025] like Figure 2 The first mounting plate 3 and the second mounting plate 2 each include a rectangular strip-shaped first connecting plate and a second connecting plate 202, which are used for detachable connection with the welding bolts 13 on the corresponding cold screen flange of the vacuum chamber; for example Figure 4 The first connecting plate has threaded bottom holes 9, and the second connecting plate 202 is integrally fixed with a cover plate 201. Positioning conical holes are provided on the cover plate 201, which covers the surface of the first connecting plate. In practice, two threaded bottom holes 9 can be provided on each first connecting plate, and two positioning conical holes can be provided on each cover plate 201, so that the positioning conical holes correspond one-to-one with the threaded bottom holes 9. Two positioning components are provided in the two threaded bottom holes 9, which can be adjusted alternately and gradually during installation to improve adjustment stability.

[0026] In this embodiment, an adjustment and installation component is also included, such as... Figures 6-8The structure shown illustrates that this adjustment and mounting assembly includes an inner rod 10 and a fastening sleeve 12 coaxially disposed outside the inner rod 10. One end of the inner rod 10 is rotatably connected to the top end of the adjusting screw 4 and can move axially together. That is, the inner rod 10 can rotate relative to the adjusting screw 4, and the axial movement of the inner rod 10 can move the adjusting screw 4 axially along with it. This allows the adjusting screw 4 to rotate integrally with the fastening sleeve 12 when it is in the correct position, i.e., when the adjusting screw 4 is at its limit position within the fastening sleeve 12. This means that the adjusting screw 4 is in a torque-transmitting engagement state, allowing the adjusting screw 4 to rotate. At this point, the fastening sleeve 12, acting as a sleeve, is already fitted onto the rectangular socket end at the top of the adjusting screw 4. This ensures that when installing the positioning component using the adjusting mounting assembly, the positioning component will not detach and can be inserted into the installation space between the cold screen flanges of adjacent vacuum chambers. Furthermore, it maintains a rotatable fit with the fastening sleeve 12, avoiding the problem of difficulty in smoothly fitting the fastening sleeve 12 onto the socket end of the adjusting screw 4 due to the deep and narrow space after directly installing the positioning component. The connection between the inner rod 10 and the adjusting screw 4 can be as follows: Figure 15 As shown, this design requires a socket wrench used to tighten the transmission sleeve 5 to be axially hollow and able to fit over the fastening sleeve 12 to rotate the transmission sleeve 5; alternatively, it can be directly magnetically attracted, with a magnet at each mating end, and the magnetic force is sufficient to bring the adjusting screw 4 into a predetermined position inside the fastening sleeve 12 when the inner rod 10 rotates, so that if necessary, the fastening sleeve 12 and the inner rod 10 can be directly removed to expose the end of the adjusting screw 4, allowing the socket wrench, etc., to freely fit onto the aforementioned drive part at the end of the adjusting screw 4; alternatively, it can be achieved directly through tolerance fit, where the inner rod 10 is a round rod of equal diameter, tightly inserted into the round hole at the top of the adjusting screw 4, with a sufficiently tight fit so that when the inner rod 10 moves upward toward the fastening sleeve 12, it will move axially along with the inner rod 10, and can be manually pulled out during subsequent installation and use.

[0027] In this embodiment, as Figure 6 , Figure 8 as well as Figure 15As shown, a locking nut 11 is threaded onto the outer side of the top end of the fastening sleeve 12. The locking nut 11 has a threaded hole in the center that mates with the inner rod 10. The threads of the locking nut 11 that mate with the fastening sleeve 12 and the inner rod 10 are opposite in direction, meaning the locking nut 11 has two threaded mounting holes with opposite directions of rotation. During installation, the locking nut 11 can be tightened clockwise onto the top end of the fastening sleeve 12 first. Then, the inner rod 10 is rotated clockwise. Because the threads of the inner rod 10 are reversed, when the clockwise rotation is performed, the inner rod 10 will slightly retract from the top end of the fastening sleeve 12. This allows the inner rod 10, along with the adjusting screw 4, to extend to its limit into the bottom port of the fastening sleeve 12. The inner rod 10 is then fixed together with the fastening sleeve 12 and the locking nut 11. During this process, rotating the inner rod 10 will not cause the locking nut 11 to loosen from the fastening sleeve 12. After installation, simply grasp the handle (not shown in the figure) at the top of the inner rod 10 and rotate it clockwise to tighten the adjusting screw 4 onto the fastening sleeve 12. It should be noted that when the threaded pairs have different rotation directions, the corresponding rotation direction during the above operation can be reversed accordingly; it is not necessary to install the aforementioned rotation direction for adjustment.

[0028] Based on the above embodiments, this embodiment specifically introduces a method for adjusting the position of the cold screen flange in a fusion reactor vacuum chamber. Specifically, the aforementioned tooling for adjusting the position of the cold screen flange in a fusion reactor vacuum chamber is used. During installation, the first mounting plate 3 and the second mounting plate 2 are first fixed to the cold screen flanges of the two vacuum chambers respectively, ensuring that the fastening nut 1 screwed onto the welding bolt 13 is reliably tightened. In specific operation, multiple of these toolings can be used alternately and gradually along the extension direction of the cold screen flange to avoid damaging the cold screen flange. The adjusting screw 4 is screwed into the threaded bottom hole 9 on the first mounting plate 3 to achieve the installation of the positioning component. This is achieved using... Figure 6 The extended sleeve 15 shown, or as... Figures 9-10 The torque sleeve 8 shown is fitted onto the positioning plug 6. As the positioning plug 6 rotates, the spring 21 on the torque sleeve 8 firmly clamps the positioning plug 6. Specifically, it can clamp a drive part shaped like a hexagonal nut, as described above, so that the positioning plug 6 is installed in the conical positioning hole on the second mounting plate 2. During this process, the flanges of the two vacuum chamber cold screens move together with their respective mounting plates. Figure 5 As shown, during the alignment with the conical hole, the corresponding flange will move, thus ultimately achieving the splicing of the flanges of the two vacuum chamber cold screens.

[0029] The above series of specific implementation details are merely some preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the claims of the present invention. Those skilled in the art, based on their understanding of the above embodiments and referring to the basic principles recorded in the claims of the present invention, can easily modify the design ideas, but these modifications still fall within the scope of protection of the invention.

Claims

1. A tooling for adjusting the position of the flanged edge of the cold screen in a fusion reactor vacuum chamber, characterized in that, It includes a first mounting plate (3) and a second mounting plate (2) respectively fixed on the cold screen flanges of two adjacent vacuum chambers, and the two mounting plates are fixedly installed by welding bolts (13) on the cold screen flanges of the vacuum chambers; one side of the second mounting plate (2) extends to the surface of the first mounting plate (3), the first mounting plate (3) is provided with a threaded bottom hole (9), and the second mounting plate (2) is provided with a conical positioning hole; It also includes a positioning component, which includes a conical positioning plug (6) coaxially mounted on an adjusting screw (4). The adjusting screw (4) is threadedly fixed in the threaded bottom hole (9). The positioning plug (6) is coaxially threaded onto the adjusting screw (4), and when the positioning plug (6) rotates around the adjusting screw (4), it is coaxially embedded into the conical positioning hole, so that the cold screens of adjacent vacuum chambers are precisely aligned.

2. The tooling for adjusting the position of the cold screen flange in a fusion reactor vacuum chamber according to claim 1, characterized in that, A transmission sleeve (5) is coaxially mounted on the large end face of the conical plug, and the inner wall of the transmission sleeve (5) does not contact the adjusting screw (4). The transmission sleeve (5) includes a hexagonal nut-shaped driving part and a disc-shaped contact plate (7). The driving part and the contact plate (7) are coaxially integrally formed. The contact plate (7) is connected to the large end face of the conical plug by an elastic fastener. Before the conical plug is inserted into the conical positioning hole, the transmission sleeve (5) rotates integrally with the conical plug. After the conical plug is inserted into the hole, the transmission sleeve (5) continues to rotate, which will cause it to rotate relative to the conical plug through the contact plate (7).

3. The tooling for adjusting the position of the cold screen flange in a fusion reactor vacuum chamber according to claim 2, characterized in that, The elastic fastener is a torsion spring, which is coaxially disposed between the conical plug and the contact plate (7), and its two ends are respectively used to connect the end faces of the conical plug and the contact plate (7).

4. The tooling for adjusting the position of the cold screen flange in a fusion reactor vacuum chamber according to claim 2, characterized in that, The elastic fastener is an arc-shaped preload spring (16); the end face of the conical plug is provided with an arc-shaped groove (601), and the preload spring (16) is provided in the groove (601). One end of the preload spring (16) is connected to one end of the groove (601), and the other end is connected to a slider (17) slidably installed in the groove (601); a transmission block (18) is fixedly protruding on the end face of the contact plate (7). The transmission block (18) is inserted into the groove (601) and closely attached to the side of the slider (17) so that the preload spring (16) is in a compressed state; the elastic force of the preload spring (16) must prevent the conical plug from being further compressed before it is embedded in the conical positioning hole.

5. The tooling for adjusting the position of the cold screen flange in a fusion reactor vacuum chamber according to claim 4, characterized in that, The groove (601) is a T-shaped groove, and an adjusting block (19), which is also T-shaped, is slidably installed at one end away from the preload spring (16). A locking screw (20) is screwed into the end of the adjusting block (19) to fix the adjusting block (19) in the corresponding position in the groove (601) and change the compression of the preload spring (16) when the transmission block (18) is inserted between the slider (17) and the adjusting block (19).

6. The tooling for adjusting the position of the cold screen flange in a fusion reactor vacuum chamber according to claim 1, characterized in that, The first mounting plate (3) and the second mounting plate (2) each include a rectangular strip-shaped first connecting plate and a second connecting plate (202). The two connecting plates are used to be detachably connected to the welding bolts (13) on the corresponding cold screen flange of the vacuum chamber. The first connecting plate is provided with the threaded bottom hole (9). The second connecting plate (202) is integrally fixed with a cover plate (201). The positioning conical hole is provided on the cover plate (201). The cover plate (201) covers the surface of the first connecting plate.

7. The tooling for adjusting the position of the cold screen flange in a fusion reactor vacuum chamber according to claim 6, characterized in that, Two threaded bottom holes (9) are provided on each first connecting plate, and two positioning conical holes are provided on each cover plate (201) so that the positioning conical holes correspond one-to-one with the threaded bottom holes (9).

8. The tooling for adjusting the position of the cold screen flange in a fusion reactor vacuum chamber according to claim 1, characterized in that, It also includes an adjustment mounting assembly, which includes an inner rod (10) and a fastening sleeve (12) coaxially disposed outside the inner rod (10). One end of the inner rod (10) is rotatably connected to the top end of the adjusting screw (4) and can move axially together. The top end of the adjusting screw (4) can extend into the bottom port of the fastening sleeve (12) and can rotate as a whole to rotate the adjusting screw (4).

9. The tooling for adjusting the position of the cold screen flange in a fusion reactor vacuum chamber according to claim 8, characterized in that, The top outer side of the fastening sleeve (12) is threaded with a locking nut (11). The locking nut (11) has a threaded hole in the center that is threaded with the inner rod (10). The locking nut (11) is used to engage with the fastening sleeve (12) and the inner rod (10) respectively in opposite directions. This is so that when the locking nut (11) is tightened clockwise on the top of the fastening sleeve (12), the inner rod (10) extends to its limit inside the bottom port of the fastening sleeve (12) while the inner rod (10) is rotated clockwise.

10. A method for adjusting the position of the cold screen flange in a fusion reactor vacuum chamber, characterized in that, The adjustment is performed using the tooling described in any one of claims 1-9 for adjusting the position of the cold screen flange in a fusion reactor vacuum chamber, comprising the following steps: S1. Fix the first mounting plate (3) and the second mounting plate (2) on the flange of the cold screen of the two vacuum chambers respectively, and ensure that the fastening nut (1) screwed on the welding bolt (13) is reliably tightened; S2. Screw the adjusting screw (4) into the threaded bottom hole (9) on the first mounting plate (3) to install the positioning component; S3. Place the socket wrench on the positioning plug (6) and rotate the positioning plug (6) so that the positioning plug (6) is installed in the conical positioning hole on the second mounting plate (2). During this period, the cold screen flanges of the two vacuum chambers move together with their respective mounting plates, and finally the assembly and alignment of the cold screen flanges of the two vacuum chambers are achieved.

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