Tokamak cold shield assembly system of liquid nitrogen rapid cooling pipeline

Abstract

The invention discloses a Tokamak cold shield assembling system of a liquid nitrogen rapid cooling pipeline, and relates to the technical field of Tokamak cold shield combined machining. The Tokamak cold shield assembling system of the liquid nitrogen rapid cooling pipeline comprises a stepping motor, and a rotating part of the stepping motor is connected with a first limiting plate and a second limiting plate; a rotating part of the gear motor is connected with a third limiting plate and a fourth limiting plate, and the two ends of the third limiting plate and the two ends of the fourth limiting plate are connected with placing plates; an inner containing cavity is formed between the second limiting plate and the third limiting plate, and an outer containing cavity is formed between the first limiting plate and the fourth limiting plate. According to the Tokamak cold shield assembly system of the liquid nitrogen rapid cooling pipeline, the inner cold shield petal plate and the outer cold shield petal plate are placed through the placement rotating piece and rotate to enter and exit from the installation position, the rotating piece is placed through the rotation limiting piece in a matched mode, and the inner cold shield petal plate and the outer cold shield petal plate are limited; and assembling of the inner cold screen petal plate or the outer cold screen petal plate is completed at the two ends of the vacuum chamber petal plate.

Description

Technical Field

[0001] The present invention relates to the technical field of tokamak cold shield assembly processing, and in particular to a tokamak cold shield assembly system for a liquid nitrogen fast cooling pipeline. Background Art

[0002] The Tokamak cold shield assembly system is a dedicated system for installing and debugging cold shield components in a Tokamak device. The cold shield includes an inner cold shield and an outer cold shield. The inner cold shield and the outer cold shield need to be transported to the inner and outer sides of the steel vacuum chamber respectively and assembled in sequence.

[0003] Referring to Chinese Patent Publication No. CN117066911A, a smart panel assembly system relates to the field of production assembly technology and includes a base assembly station and a button assembly station. The smart panel assembly system of the present invention can automatically perform the following assembly processes through the base assembly station: base loading, base laser engraving, base labeling, PCBA board loading and code scanning binding, PCBA board and base assembly, base cover laser engraving and loading, base cover assembly and base, and base cover locking, thereby improving assembly efficiency.

[0004] However, the steel vacuum chamber is large in size, and a vacuum panel is connected to numerous inner cooling shield flaps and outer cooling shield flaps. Usually, a crane is used to lift the assembled inner cooling shield flaps or outer cooling shield flaps to the installation site, and the position of the inner cooling shield flaps or outer cooling shield flaps is adjusted to match the steel vacuum chamber. The position of the inner cooling shield flaps or outer cooling shield flaps cannot be adjusted during the lifting process, and the inner cooling shield flaps or outer cooling shield flaps cannot be transported and installed at the same time. They need to be installed separately, resulting in low work efficiency. Summary of the Invention

[0005] In response to the deficiencies in the prior art, the present invention provides a tokamak cold shield assembly system for a liquid nitrogen fast cooling pipeline, wherein two inner cold shield flaps or outer cold shield flaps can be installed on both sides of a vacuum chamber flap, respectively. The inner cold shield flap and the outer cold shield flap are placed by placing a rotating part and rotated in and out of the installation position of the vacuum chamber flap, and the rotating part is adapted to be placed and the inner cold shield flap and the outer cold shield flap are limited by a rotating limit part. Without increasing the rotating limit part or the space for placing the rotating part, the assembly of the two inner cold shield flaps or the outer cold shield flap is completed from both ends of the vacuum chamber flap.

[0006] Technical solution: To achieve the above objectives, the present invention is implemented through the following technical solutions: A tokamak cold shield assembly system for a liquid nitrogen fast cooling pipeline, comprising: a placing rotating part for placing an inner cold shield flap and an outer cold shield flap and rotating the flap in and out of a vacuum chamber; the placing rotating part comprises: a stepping motor, the rotating part of the stepping motor is connected to a first limit plate and a second limit plate, a rotating limit part for adapting to the placing rotating part and limiting the inner cold shield flap and the outer cold shield flap; the rotating limit part is arranged on one side of the vacuum chamber flap; the rotating limit part comprises: a reduction motor, the reduction motor is located below the stepping motor, the rotating part of the reduction motor is connected to a third limit plate and a fourth limit plate, both ends of the third limit plate and both ends of the fourth limit plate are connected to a placing plate, an inner placing cavity is arranged between the second limit plate and the third limit plate, and an outer placing cavity is arranged between the first limit plate and the fourth limit plate.

[0007] Preferably, an inner cold screen is provided on the inner side of the vacuum chamber flap, and the inner cold screen is welded to the inner wall of the vacuum chamber flap through an inner flexible connecting piece. An outer cold screen is provided on the outer side of the vacuum chamber flap, and the outer cold screen is welded to the vacuum chamber flap through inner and outer flexible connecting pieces. Two inner cold screen flaps are installed on the inner side of the vacuum chamber flap, and two outer cold screen flaps are installed on the outer side of the vacuum chamber flap. Both sides of the first limiting plate and both sides of the second limiting plate are coplanar, and both sides of the third limiting plate and both sides of the fourth limiting plate are coplanar.

[0008] Preferably, the rotating member further includes: a first rotating shaft, the rotating part of the stepping motor is connected to the first rotating shaft, the first rotating shaft is connected to the first limit plate through a first connecting plate, the first limit plate is connected to the second limit plate through a first connecting plate, the upper surface of the first limit plate and the upper surface of the second limit plate are both penetrated by a first reduction hole, the inner wall of the first reduction hole is connected with a plurality of first section plates, and the first section plates are all arranged at the turning point of the first limit plate or the second limit plate.

[0009] Preferably, the placement rotating member also includes: a second rotating shaft, the rotating part of the reduction motor is connected to the second rotating shaft, the side of the second rotating shaft is connected to a second connecting plate, the upper surface of the second connecting plate is provided with a plurality of slide grooves, the slide grooves are adapted to the bottom of the first limit plate and the bottom of the second limit plate, the second connecting plate will not contact the first limit plate and the second limit plate during the rotation process, the same side of the second connecting plate is connected to one side of the third limit plate and the fourth limit plate, the upper surface of the third limit plate and the upper surface of the fourth limit plate are both penetrated by a second reducing hole, the second reducing hole is connected to a plurality of second section plates, and an inner cold shield flap plate or an outer cold shield flap plate is placed on the placement plate.

[0010] Preferably, the second limiting plate, the third limiting plate and the placement plate together constitute a first placement box, the second limiting plate and the third limiting plate are two side plates of the first placement box, the first limiting plate, the fourth limiting plate and the placement plate together constitute a second placement box, the first limiting plate and the fourth limiting plate are two side plates of the second placement box.

[0011] Preferably, the bottom end of the third limiting plate or the bottom end of the fourth limiting plate is connected to an extension plate on one side close to the second connecting plate, a screw groove is provided on one side of the extension plate, a sliding hole is provided through one side of the extension plate and one end of the sliding hole is connected to the screw groove, a threaded hole is provided through the center of the screw groove, the threaded hole is arranged in the middle of the sliding hole, a baffle is slidably connected to the sliding hole, a threaded rod is connected to one side of the baffle, and the threaded rod is threadedly connected to the threaded hole.

[0012] Preferably, one side of the sliding hole and one side of the third limiting plate or one side of the fourth limiting plate are located in the same plane, and the baffle extends into the inner placement cavity or the outer placement cavity and pushes the inner cold shield flap or the outer cold shield flap.

[0013] Preferably, in the initial state, the rotation limiter and the placement rotation member are located at the first workstation, the rotation limiter and the placement rotation member are both located on the outside of one end of the vacuum chamber flap plate, one side of the rotation limiter is coplanar with one side of the vacuum chamber flap plate, and a placement rotation member is provided on the other side of the rotation limiter, and the rotation limiter and the placement rotation member are staggered or partially opposite each other. In the rotating state, the baffle extends into the inner placement cavity or the outer placement cavity, the rotation limiter is stationary, the placement rotation member rotates, and the rotation limiter and the placement rotation member are staggered. When the placement rotation member rotates to the preset position, it is stationary, and the refrigeration equipment of the vacuum chamber flap plate is connected to the refrigeration pipe of the inner cold screen flap plate or the outer cold screen flap plate. Then the placement rotation member slows down and rotates, and the placement rotation member rotates to the installation position. This is the terminal state, and the placement rotation member rotates to the second workstation.

[0014] Beneficial Effects: The present invention provides a tokamak cold shield assembly system for liquid nitrogen rapid cooling lines. Compared to existing technologies, this system offers the following advantages: 1. Two inner or outer cold shield flaps can be mounted on either side of a vacuum chamber flap. The inner and outer cold shield flaps are positioned and rotated in and out of the mounting area of the vacuum chamber flap by placing a rotating member. A rotating stopper is adapted to accommodate the rotating member and limit the position of the inner and outer cold shield flaps. Without increasing the rotating stopper or the space required for the rotating member, one set of inner and outer cold shield flaps can be moved from one end of the vacuum chamber flap into the mounting area and assembled. Subsequently, another set of inner and outer cold shield flaps can be moved from the other end of the vacuum chamber flap into the mounting area, allowing the two sets of inner and outer cold shield flaps, as well as the vacuum chamber flap, to be assembled. The entire tokamak cold shield assembly system occupies a small footprint and is flexible to operate, making it suitable for assembling two sets of inner and outer cold shield flaps with the vacuum chamber flap.

[0015] 2. The rotation limit piece and the placement rotating piece rotate to the first working position, the rotation limit piece and the placement rotating piece can be completely staggered or partially staggered. When the third limit plate is completely staggered with the second limit plate, and the first limit plate is completely staggered with the fourth limit plate, the first placement box and the second placement box are not formed, and the inner cold screen flap plate or the outer cold screen flap plate has a large space for movement, which is convenient for the inner cold screen flap plate or the outer cold screen flap plate to be completely moved into the placement plate; when the rotation limit piece and the placement rotating piece are partially staggered, the part that the third limit plate and the second limit plate are not staggered constitute the first placement box, and the part that the second limit plate and the fourth limit plate are not staggered constitute the second placement box, which is convenient for the inner cold screen flap plate or the outer cold screen flap plate to be placed on the placement plate first and move along the placement plate trajectory into the first placement box or the second placement box, thereby limiting the subsequent movement of the inner cold screen flap plate or the outer cold screen flap plate.

[0016] 3. Since the position of the rotation limiter is facing one side of the vacuum chamber flap, in order to avoid the rotation limiter colliding with the vacuum chamber flap during rotation, the rotation limiter cannot enter the inner side of the vacuum chamber flap, and the rotation limiter can only rotate to a position in contact with one side of the vacuum chamber flap. In the process of moving the rotational part from the outer side of the vacuum chamber flap to the inner side of the vacuum chamber flap, the rotational part is statically set on the outer side of the vacuum chamber flap to form a side plate to assist the rotation of the rotational part, limit the inner cold shield flap or the outer cold shield flap, and prevent the inner cold shield flap or the outer cold shield flap from falling out of the placement plate.

[0017] 4. By providing a baffle in the inner or outer placement chamber, as the placement rotating member continues to rotate, the baffle can contact and push the inner or outer cold shield flaps, preventing them from sliding relative to the placement plate, and thus preventing them from slipping out of one end of the inner or outer placement chamber, thereby ensuring safety and reliability. Furthermore, the baffle is compatible with the placement plate, and as it rotates with the placement rotating member, it does not contact the rotation limiter or the vacuum chamber flaps, thereby preventing the normal rotation of the placement rotating member. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present application and, together with the description, further serve to explain the principles of the present application and enable those skilled in the relevant art to make and use the present application.

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a structural schematic diagram of the present invention.

[0021] Figure 2 This is a diagram showing the separation of the vacuum chamber and the stepper motor.

[0022] Figure 3 This is a structural diagram of the part where the vacuum chamber is located.

[0023] Figure 4 This is a structural diagram of the inner cooling screen and the outer cooling screen.

[0024] Figure 5 This is a structural diagram of the part where the stepper motor is located.

[0025] Figure 6 It is a structural diagram of the rotation limiter and the placement of the rotating part.

[0026] Figure 7 It is a structural diagram of the rotation limiter.

[0027] Figure 8 Schematic diagram of the structure for placing rotating parts.

[0028] Figure 9 This is a diagram showing the separation of the portion where the reduction motor is located and the portion where the third and fourth limiting plates are located.

[0029] Figure 10It is a structural diagram of the part where the fourth limiting plate is located.

[0030] Figure 11 It is a structural diagram of the connection between the fourth limiting plate and the extension plate.

[0031] Figure 12 for Figure 11 Schematic diagram of the structure from another perspective.

[0032] Figure 13 It is a structural diagram of the third limiting plate, the second limiting plate and the inner placement cavity.

[0033] Figure 14 This is a structural diagram when the first limiting plate and the fourth limiting plate are staggered.

[0034] Figure 15 This is a structural diagram when the first limiting plate faces the fourth limiting plate.

[0035] The accompanying drawings are marked as follows: 11. Vacuum chamber flap; 12. Inner cold shield flap; 13. Outer cold shield flap; 14. Inner flexible connecting plate; 15. Outer flexible connecting plate; 2. Rotation limiter; 21. Stepper motor; 22. First rotating shaft; 23. First connecting plate; 24. First limiter plate; 25. First section plate; 26. First reduction hole; 27. First connecting plate; 28. Second limiter plate; 3. Placement of rotating part; 31. Reducer motor; 32. Second rotating shaft; 33. Second connecting plate; 34. Slide; 35. Third limiter plate; 36. Fourth limiter plate; 37. Second reduction hole; 38. Second section plate; 39. Placement plate; 41. Extension plate; 42. Twist groove; 43. Slide hole; 44. Threaded hole; 45. Baffle; 46. Threaded rod; 51. Inner placement cavity; 52. Outer placement cavity.

[0036] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the appended claims. DETAILED DESCRIPTION

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0038] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0039] Example 1: Figure 1 - Figure 15 As shown, the embodiment of the present invention provides a tokamak cold shield assembly system for a liquid nitrogen fast cooling pipeline, including: a placement rotating member 3 for placing an inner cold shield flap 12 and an outer cold shield flap 13 and rotating the flap 11 in and out of the vacuum chamber, the placement rotating member 3 includes: a stepper motor 21, the rotating portion of the stepper motor 21 is connected to a first limit plate 24 and a second limit plate 28, a rotation limit member 2 for adapting the placement of the rotating member 3 and limiting the inner cold shield flap 12 and the outer cold shield flap 13, and the rotation limit Component 2 is arranged on one side of the vacuum chamber flap 11, and the rotation limit component 2 includes: a reduction motor 31, the reduction motor 31 is located below the stepper motor 21, and the rotating part of the reduction motor 31 is connected to the third limit plate 35 and the fourth limit plate 36, and both ends of the third limit plate 35 and the fourth limit plate 36 are connected to the placement plate 39, an inner placement cavity 51 is provided between the second limit plate 28 and the third limit plate 35, and an outer placement cavity 52 is provided between the first limit plate 24 and the fourth limit plate 36.

[0040] An inner cold screen is provided on the inner side of the vacuum chamber flap 11, and the inner cold screen is welded to the inner wall of the vacuum chamber flap 11 through an inner flexible connecting piece 14. An outer cold screen is provided on the outer side of the vacuum chamber flap 11, and the outer cold screen is welded to the vacuum chamber flap 11 through inner and outer flexible connecting pieces 15. Two inner cold screen flaps 12 are installed on the inner side of the vacuum chamber flap 11, and several outer cold screen flaps 13 are installed on the outer side of the vacuum chamber flap 11. The two sides of the first limiting plate 24 and the two sides of the second limiting plate 28 are respectively coplanar, and the two sides of the third limiting plate 35 and the two sides of the fourth limiting plate 36 are respectively coplanar.

[0041] The placement rotating member 3 also includes: a first rotating shaft 22, the rotating part of the stepping motor 21 is connected to the first rotating shaft 22, the first rotating shaft 22 is connected to the first limiting plate 24 through the first connecting plate 2723, the first limiting plate 24 is connected to the second limiting plate 28 through the first connecting plate 2723, the upper surface of the first limiting plate 24 and the upper surface of the second limiting plate 28 are both penetrated by a first reducing hole 26, the inner wall of the first reducing hole 26 is connected to a plurality of first section plates 25, and the first section plates 25 are all arranged at the turning point of the first limiting plate 24 or the second limiting plate 28.

[0042] The placement rotating member 3 also includes: a second rotating shaft 32, the rotating part of the reduction motor 31 is connected to the second rotating shaft 32, the side of the second rotating shaft 32 is connected to a second connecting plate 33, the upper surface of the second connecting plate 33 is provided with a plurality of sliding grooves 34, the sliding grooves 34 are adapted to the bottom of the first limit plate 24 and the bottom of the second limit plate 28, the second connecting plate 33 will not contact the first limit plate 24 and the second limit plate 28 during the rotation process, and the same side of the second connecting plate 33 is connected to one side of the third limit plate 35 and the fourth limit plate 36, the upper surface of the third limit plate 35 and the upper surface of the fourth limit plate 36 are both penetrated by a second reducing hole 37, the second reducing hole 37 is connected to a plurality of second section plates 38, and the inner cold shield flap 12 or the outer cold shield flap 13 is placed on the placement plate 39.

[0043] The first and second relief holes 26 and 37 are designed to remove some material, effectively reducing the weight of the stopper plates (including the first, second, third, and fourth stopper plates 24, 28, 35, and 36) without compromising the basic structural strength and functionality of the plates. This improves equipment performance and efficiency, while reducing energy consumption. By reducing material usage and thus production costs, the relief holes ensure product quality while also improving economic benefits. The relief holes also make it easier to perform cutting, stamping, and drilling operations on the stopper plates during processing. For example, during stamping, the relief holes reduce material resistance, lowering mold wear, and improving processing efficiency and mold life. Because stopper plates require bending, folding, or other deformation processes and applications, the relief holes make it easier to operate according to design requirements. By removing some material, the stopper plates are more easily deformed when subjected to force, thus meeting diverse shape and structural requirements.

[0044] The second limiting plate 28, the third limiting plate 35, and the placement plate 39 together constitute a first placement box, the second limiting plate 28 and the third limiting plate 35 are two side plates of the first placement box, the first limiting plate 24, the fourth limiting plate 36, and the placement plate 39 together constitute a second placement box, the first limiting plate 24 and the fourth limiting plate 36 are two side plates of the second placement box.

[0045] When the cam 2 is in the closed position, the cam 2 is in the closed position, and the cam 2 is in the closed position, so that the cam 2 is in the closed position and the cam 2 is in the closed position. When the cam 2 is in the closed position, the cam 2 is in the closed position, and the cam 2 is in the closed position, so that the cam 2 is in the closed position and ...

[0046] When in use, start the stepper motor 21 and the reduction motor 31. The rotating part of the stepper motor 21 drives the first limit plate 24 and the second limit plate 28 through the first rotating shaft 22 and the first connecting plate 2723. The rotating part of the reduction motor 31 drives the third limit plate 35 and the fourth limit plate 36 through the second rotating shaft 32 and the second connecting plate 33. The rotation limit member 2 and the placement rotating member 3 are rotated to the first position. The rotation limit member 2 and the placement rotating member 3 are both located outside one end of the vacuum chamber. At this time, the first limit member One side of the plate 24 is in the same plane as one side of the vacuum chamber flap 11, the side of the rotation limiter 2 away from the vacuum chamber is in the same plane as the side of the placement rotating member 3 close to the vacuum chamber, the third limiter plate 35 is completely staggered with the second limiter plate 28, the first limiter plate 24 is completely staggered with the fourth limiter plate 36, and the first placement box and the second placement box are not formed. The space for the inner cold shield flap 12 or the outer cold shield flap 13 to move is large, which facilitates the inner cold shield flap 12 or the outer cold shield flap 13 to be completely moved onto the placement plate 39.

[0047] The rotating limit member 2 and the placing rotating member 3 are partially staggered, and the unstaggered part of the third limit plate 35 and the second limit plate 28 constitutes a first placing box, and the unstaggered part of the second limit plate 28 and the fourth limit plate 36 constitutes a second placing box. The inner cold shield flap 12 or the outer cold shield flap 13 is hung on the placing plate 39, and the inner cold shield flap 12 or the outer cold shield flap 13 is pushed into the first placing box or the second placing box. The end of the placing plate 39 close to the vacuum chamber flap 11 forms the first placing box or the second placing box, and the end of the placing plate 39 away from the vacuum chamber flap 11 does not form the first placing box or the second placing box, so that the inner cold shield flap 12 or the outer cold shield flap 13 is placed on the placing plate 39 first and moves along the trajectory of the placing plate 39 and then enters the first placing box or the second placing box, thereby limiting the subsequent movement of the inner cold shield flap 12 or the outer cold shield flap 13.

[0048] The size of the placement plate 39 is adapted to the size of the inner cold shield flap 12 or the outer cold shield flap 13. When the inner cold shield flap 12 or the outer cold shield flap 13 is completely placed on the placement plate 39, the side of the inner cold shield flap 12 or the outer cold shield flap 13 away from the vacuum chamber flap 11 and the side of the placement plate 39 away from the vacuum chamber flap 11 are located in the same plane.

[0049] The reduction motor 31 continues to rotate with the placement rotating part 3, and the friction between the placement plate 39 and the inner cold shield flap 12 or the outer cold shield flap 13 is large. During the rotation process, the placement plate 39 and the inner cold shield flap 12 or the outer cold shield flap 13 are relatively stationary, the rotation limiter 2 does not move, and the rotation limiter 2 and the placement rotating part produce relative displacement. The parts facing the third limiter plate 35 and the second limiter plate 28, and the parts facing the second limiter plate 28 and the fourth limiter plate 36 gradually increase, and the inner cold shield flap 12 or the outer cold shield flap 13 moves in the inner placement cavity 51 and the outer placement cavity 52. When the side of the inner cold shield flap 12 or the outer cold shield flap 13 close to the vacuum chamber flap 11 is in the same plane as the side of the rotation limiter 2 close to the vacuum chamber flap 11, the parts facing the third limiter plate 35 and the second limiter plate 28, and the second limiter plate 28 and the fourth limiter plate 36 are completely facing each other, and the inner placement cavity 51 and the outer placement cavity 52 reach their maximum.

[0050] Since the position of the rotation limiter 2 is facing one side of the vacuum chamber flap 11, in order to avoid the rotation limiter 2 colliding with the vacuum chamber flap 11 during rotation, the rotation limiter 2 cannot enter the inner side of the vacuum chamber flap 11, and the rotation limiter 2 can only rotate to a position in contact with one side of the vacuum chamber flap 11. In the process of moving the placement rotating part 3 from the outside of the vacuum chamber flap 11 to the inside of the vacuum chamber flap 11, the placement rotating part 3 is statically set on the outside of the vacuum chamber flap 11 to form a side plate to assist the rotation of the placement rotating part 3, limit the inner cold shield flap 12 or the outer cold shield flap 13, and place the inner cold shield flap 12 or the outer cold shield flap 13 to fall out of the placement plate 39.

[0051] The placement rotating member 3 continues to rotate, the rotation limit member 2 is relatively staggered with the placement rotating member, and the staggered area between the rotation limit member 2 and the placement rotating member continues to increase, and the area of the side plate (first limit plate 24 or second limit plate 28) of the rotation limit member 2 used to contact and limit the inner cold shield flap 12 or the outer cold shield flap 13 is reduced, but the area of the vacuum chamber wall used to contact the inner cold shield flap 12 or the outer cold shield flap 13 is increased, and the rotation limit member 2 is replaced by the vacuum chamber inner wall and plays a limiting role. When the placement rotating member rotates to a preset position (which can be set according to actual production), the placement rotating member stops rotating. At this time, the placement rotating member has not moved to the installation position and has a certain gap with the installation position, which is convenient for the staff to connect the refrigeration equipment of the vacuum chamber flap 11 with the refrigeration pipeline of the inner cold shield flap 12 or the outer cold shield flap 13.

[0052] The placed rotating part 3 continues to rotate at a reduced speed. At this time, the placed rotating part 3 is close to the installation position or is about to contact with other inner cold shield flaps 12 and outer cold shield flaps 13. The rotation speed of the placed rotating part 3 is reduced to facilitate observation by the staff. When there is a deviation from the installation position, the placed rotating part 3 can be stopped to facilitate control. The inner cold shield flaps 12 and outer cold shield flaps 13 are placed on the placement plate 39. The inner cold shield flaps 12 and outer cold shield flaps 13 are supported to facilitate lifting and fine-tuning of the positions of the inner cold shield flaps 12 and outer cold shield flaps 13, so that the inner cold shield flaps 12 and outer cold shield flaps 13 are accurately moved to the installation position for welding or other connection.

[0053] Since one vacuum chamber flap 11 can be installed with two inner cold shield flaps 12 and outer cold shield flaps 13, the placement rotating part 3 and the rotation limiting part 2 are rotated to the other side of the vacuum chamber flap 11 to complete the loading, movement and docking of a set of inner cold shield flaps 12 and outer cold shield flaps 13.

[0054] The shape and occupied space of the rotating part 3 and the rotating limit part 2 are adapted to an inner cold shield flap 12 or an outer cold shield flap 13, thereby reducing the volume of the rotating part 3 and the rotating limit part 2, and the rotating part 3 and the rotating limit part 2 can rotate alternately. When the number of vacuum chamber flaps 11 connected increases and the rotation space of the rotating part 3 and the rotating limit part 2 becomes smaller, the rotating part 3 and the rotating limit part 2 can be rotated to a completely opposite position, thereby reducing the occupied space and facilitating continued use.

[0055] Example 2: Figure 1 - Figure 15 As shown, an embodiment of the present invention provides a tokamak cold shield assembly system for a liquid nitrogen fast cooling pipeline, wherein an extension plate 41 is connected to the bottom end of the third limiting plate 35 or the bottom end of the fourth limiting plate 36 near the second connecting plate 33, and a screw groove 42 is provided on one side of the extension plate 41. A sliding hole 43 is provided through one side of the extension plate 41, and one end of the sliding hole 43 is connected to the screw groove 42. A threaded hole 44 is provided through the center of the screw groove 42, and the threaded hole 44 is arranged in the middle of the sliding hole 43. The sliding hole 43 is slidably connected to a baffle 45, and a threaded rod 46 is connected to one side of the baffle 45, and the threaded rod 46 is threadedly connected to the threaded hole 44.

[0056] One side of the sliding hole 43 is located in the same plane as one side of the third limiting plate 35 or one side of the fourth limiting plate 36. The baffle 45 extends into the inner placement cavity 51 or the outer placement cavity 52 and pushes the inner cold shield flap 12 or the outer cold shield flap 13. The baffle 45 extends into the inner placement cavity 51 or the outer placement cavity 52.

[0057] During use, after the inner cold shield flap 12 or the outer cold shield flap 13 is completely placed on the placement plate 39, part of the baffle 45 passes through the sliding hole 43 and is set in the inner placement cavity 51 or the outer placement cavity 52. The threaded rod 46 is twisted, and the baffle 45 is continuously moved out of the sliding hole 43. The length of the baffle 45 in the inner placement cavity 51 or the outer placement cavity 52 increases. After stopping twisting, one side of the baffle 45 contacts the inner wall of the inner placement cavity 51 or the inner wall of the outer placement cavity 52. After the baffle 45 passes through the sliding hole 43, the side of the baffle 45 close to the vacuum chamber flap 11 and the side of the inner cold shield flap 12 away from the vacuum chamber flap 11 or the side of the outer cold shield flap 13 away from the vacuum chamber flap 11 are located in the same plane.

[0058] By disposing a baffle 45 in the inner placement chamber 51 or the outer placement chamber 52, as the placement rotating member 3 continues to rotate, the baffle 45 can contact and push the inner cold shield flap 12 or the outer cold shield flap 13, preventing the inner cold shield flap 12 or the outer cold shield flap 13 from sliding relative to the placement plate 39, thereby preventing the inner cold shield flap 12 or the outer cold shield flap 13 from sliding out of one end of the inner placement chamber 51 or the outer placement chamber 52, thereby ensuring safety and reliability. Furthermore, the baffle 45 is compatible with the placement plate 39, and as the baffle 45 rotates with the placement rotating member 3, it does not contact the rotation limiter 2 or the vacuum chamber flap 11, thereby not affecting the normal rotation of the placement rotating member 3.

[0059] If the inner cold shield flap 12 or the outer cold shield flap 13 is not placed on the placement plate 39, the threaded rod 46 can be screwed to remove the baffle 45, which will not block the inner cold shield flap 12 or the outer cold shield flap 13 from being placed on the placement plate 39. The installation and disassembly method is simple and easy to operate.

[0060] Two inner cold shield flaps 12 or outer cold shield flaps 13 can be installed on both sides of a vacuum chamber flap 11 respectively. The inner cold shield flap 12 and the outer cold shield flap 13 are placed by placing the rotating part 3 and rotated in and out of the installation position of the vacuum chamber flap 11. The rotating part 3 is adapted to be placed by the rotation limiter 2 and the inner cold shield flap 12 and the outer cold shield flap 13 are limited. Without increasing the rotation limiter 2 and the space for placing the rotating part 3, a group of inner cold shield flaps 12 and outer cold shield flaps 13 are moved from one end of the vacuum chamber flap 11 into the installation position and assembled, and then the other group of inner cold shield flaps 12 and outer cold shield flaps 13 are moved from the other end of the vacuum chamber flap 11 into the installation position, so that the two groups of inner cold shield flaps 12 and outer cold shield flaps 13 and the vacuum chamber flap 11 are adapted and assembled. The entire tokamak cold shield assembly system occupies a small volume and is flexible to operate, and is suitable for assembling two sets of inner cold shield petals 12 and outer cold shield petals 13 with the vacuum chamber petals 11.

[0061] The present invention encompasses any alternatives, modifications, equivalents, and solutions that fall within the spirit and scope of the present invention. While specific details are described in detail in the preferred embodiments of the present invention to provide a thorough understanding of the present invention, those skilled in the art will be able to fully understand the present invention without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of the present invention, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0062] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A tokamak cold shield assembly system with liquid nitrogen rapid cooling pipeline, characterized in that: include: A placement rotating member (3) is used to place the inner cold shield flap (12) and the outer cold shield flap (13) and rotate the flap (11) in and out of the vacuum chamber, wherein the placement rotating member (3) comprises a stepping motor (21), wherein the rotating portion of the stepping motor (21) is connected to a first limiting plate (24) and a second limiting plate (28); A rotation limiter (2) is used to accommodate the rotation member (3) and limit the inner cold shield flap (12) and the outer cold shield flap (13), wherein the rotation limiter (2) is arranged on one side of the vacuum chamber flap (11), and the rotation limiter (2) comprises: a reduction motor (31), wherein the reduction motor (31) is located below the stepping motor (21), and the rotating portion of the reduction motor (31) is connected to a third limiter plate (35) and a fourth limiter plate (36), and both ends of the third limiter plate (35) and the fourth limiter plate (36) are connected to a placement plate (39); An inner placement cavity (51) is provided between the second limiting plate (28) and the third limiting plate (35), and an outer placement cavity (52) is provided between the first limiting plate (24) and the fourth limiting plate (36).

2. The tokamak cold shield assembly system for liquid nitrogen rapid cooling pipeline according to claim 1, characterized in that: An inner cold screen is provided on the inner side of the vacuum chamber flap (11), and the inner cold screen is welded to the inner wall of the vacuum chamber flap (11) through an inner flexible connecting piece (14). An outer cold screen is provided on the outer side of the vacuum chamber flap (11), and the outer cold screen is welded to the vacuum chamber flap (11) through an inner and outer flexible connecting piece (15). Two inner cold screen flaps (12) are mounted on the inner side of the vacuum chamber flap (11), and two outer cold screen flaps (13) are mounted on the outer side of the vacuum chamber flap (11). Both sides of the first limiting plate (24) and both sides of the second limiting plate (28) are coplanar, and both sides of the third limiting plate (35) and both sides of the fourth limiting plate (36) are coplanar.

3. The tokamak cold shield assembly system for liquid nitrogen rapid cooling pipeline according to claim 1, characterized in that: The placement rotating member (3) further includes: a first rotating shaft (22), the rotating part of the stepping motor (21) is connected to the first rotating shaft (22), the first rotating shaft (22) is connected to the first limiting plate (24) through a first connecting plate (27) (23), the first limiting plate (24) is connected to the second limiting plate (28) through the first connecting plate (27) (23), the upper surface of the first limiting plate (24) and the upper surface of the second limiting plate (28) are both penetrated by a first reduction hole (26), the inner wall of the first reduction hole (26) is connected to a plurality of first section plates (25), and the first section plates (25) are all arranged at the turning point of the first limiting plate (24) or the second limiting plate (28).

4. The tokamak cold shield assembly system for liquid nitrogen rapid cooling pipeline according to claim 1, characterized in that: The placement rotating member (3) further includes: a second rotating shaft (32), the rotating part of the reduction motor (31) is connected to the second rotating shaft (32), the side of the second rotating shaft (32) is connected to a second connecting plate (33), the upper surface of the second connecting plate (33) is provided with a plurality of sliding grooves (34), the sliding grooves (34) are adapted to the bottom of the first limiting plate (24) and the bottom of the second limiting plate (28), and the second connecting plate (33) will not be in contact with the first limiting plate during the rotation process. (24) and the second limit plate (28), one side of the second connection plate (33) is connected to one side of the third limit plate (35) and the fourth limit plate (36), the upper surface of the third limit plate (35) and the upper surface of the fourth limit plate (36) are both penetrated with a second reduction hole (37), the second reduction hole (37) is connected to a plurality of second section plates (38), and the placement plate (39) is placed with an inner cold shield flap plate (12) or an outer cold shield flap plate (13).

5. The tokamak cold shield assembly system for liquid nitrogen rapid cooling pipeline according to claim 1, characterized in that: The second limiting plate (28), the third limiting plate (35), and the placement plate (39) together constitute a first placement box, the second limiting plate (28) and the third limiting plate (35) are two side plates of the first placement box, the first limiting plate (24), the fourth limiting plate (36), and the placement plate (39) together constitute a second placement box, the first limiting plate (24) and the fourth limiting plate (36) are two side plates of the second placement box.

6. The tokamak cold shield assembly system for liquid nitrogen rapid cooling pipeline according to claim 1, characterized in that: The bottom end of the third limiting plate (35) or the bottom end of the fourth limiting plate (36) is connected to an extension plate (41) on one side close to the second connecting plate (33), and a screw groove (42) is provided on one side of the extension plate (41). A sliding hole (43) is provided through one side of the extension plate (41), and one end of the sliding hole (43) is connected to the screw groove (42). A threaded hole (44) is provided through the center of the screw groove (42), and the threaded hole (44) is provided in the middle of the sliding hole (43). The sliding hole (43) is slidably connected to a baffle (45), and a threaded rod (46) is connected to one side of the baffle (45), and the threaded rod (46) is threadedly connected to the threaded hole (44).

7. The tokamak cold shield assembly system for liquid nitrogen rapid cooling pipeline according to claim 6, characterized in that: One side of the sliding hole (43) and one side of the third limiting plate (35) or one side of the fourth limiting plate (36) are located in the same plane, and the baffle (45) extends into the inner placement cavity (51) or the outer placement cavity (52) and pushes the inner cold shield flap (12) or the outer cold shield flap (13).

8. The tokamak cold shield assembly system for liquid nitrogen rapid cooling pipeline according to claim 6, characterized in that: In the initial state, the rotation limiter (2) and the placement rotation member (3) are located at the first station, the rotation limiter (2) and the placement rotation member (3) are both located outside one end of the vacuum chamber flap (11), one side of the rotation limiter (2) and one side of the vacuum chamber flap (11) are coplanar, and the other side of the rotation limiter (2) is provided with the placement rotation member (3), the rotation limiter (2) and the placement rotation member (3) are staggered or partially opposite, and in the rotating state, the baffle (45) extends into the inner placement cavity (51) or the outer placement cavity (51). The cavity (52) is provided with a rotation limiter (2) and a placement rotation member (3) that are staggered. When the placement rotation member (3) rotates to a preset position, the placement rotation member (3) stops. The refrigeration equipment of the vacuum chamber flap (11) is connected to the refrigeration pipeline of the inner cold shield flap (12) or the outer cold shield flap (13). Then, the placement rotation member (3) is rotated at a reduced speed. The placement rotation member (3) is rotated to the installation position, which is the end state. The placement rotation member (3) is rotated to the second station.

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