Tokamak cold screen assembly system of liquid nitrogen fast cooling pipeline

Abstract

The application discloses a Tokamak cold shield assembly system of a liquid nitrogen fast cooling pipeline, and relates to the technical field of Tokamak cold shield combination processing. The Tokamak cold shield assembly system of the liquid nitrogen fast cooling pipeline comprises a stepping motor, the rotating part of the stepping motor is connected with a first limiting plate and a second limiting plate, the rotating part of a speed reducer is connected with a third limiting plate and a fourth limiting plate, the two ends of the third limiting plate and the two ends of the fourth limiting plate are both connected with a placing plate, an inner placing cavity is arranged between the second limiting plate and the third limiting plate, and an outer placing cavity is arranged between the first limiting plate and the fourth limiting plate. The Tokamak cold shield assembly system of the liquid nitrogen fast cooling pipeline places the inner cold shield petal plate and the outer cold shield petal plate through a placing rotating part, rotates in and out of the installation position, and limits the inner cold shield petal plate and the outer cold shield petal plate through a rotating limiting part, so that the assembly of the inner cold shield petal plate or the outer cold shield petal plate is completed at the two ends of the vacuum chamber petal plate.

Description

Technical Field

[0001] This invention relates to the field of tokamak cold shield assembly technology, specifically to a tokamak cold shield assembly system with a liquid nitrogen rapid cooling pipeline. Background Technology

[0002] The tokamak cold screen assembly system is a specialized system for the installation and commissioning of cold screen components in tokamak devices. The cold screen includes an inner cold screen and an outer cold screen, which 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, an intelligent panel assembly system relates to the field of production assembly technology, including a base assembly station and a button assembly station. The intelligent panel assembly system of this invention can automatically perform assembly processes such as base loading, base laser engraving, base labeling, PCBA board loading and barcode scanning binding, PCBA board and base assembly, laser engraving and loading of the base cover, assembly of the base cover and base, and locking the base cover, thereby improving assembly efficiency.

[0004] However, steel vacuum chambers are large in size, and each vacuum plate has numerous inner and outer cooling screen plates connected to it. Typically, a crane is used to lift the assembled inner or outer cooling screen plates to the installation site, and the positions of the inner or outer cooling screen plates are adjusted to match the steel vacuum chamber. It is impossible to adjust the positions of the inner or outer cooling screen plates during the lifting process, and the inner or outer cooling screen plates cannot be transported and installed at the same time, requiring separate installation, which results in low work efficiency. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a tokamak cold shield assembly system for a liquid nitrogen rapid cooling pipeline. Two inner or outer cold shield plates can be installed on each side of a vacuum chamber plate. The inner and outer cold shield plates are placed and rotated into and out of the installation position of the vacuum chamber plate by placing a rotating component. The rotating component is adapted to be placed and the inner and outer cold shield plates are limited by a rotating limiting component. Without increasing the space for the rotating limiting component or the rotating component, the assembly of the two inner or outer cold shield plates can be completed from both ends of the vacuum chamber plate.

[0006] Technical Solution: To achieve the above objectives, the present invention provides the following technical solution: A tokamak cold shield assembly system for a liquid nitrogen rapid cooling pipeline, comprising: a placement rotating component for placing an inner cold shield flap and an outer cold shield flap and rotating it in and out of the vacuum chamber flap, the placement rotating component comprising: a stepper motor, the rotating part of the stepper motor being connected to a first limiting plate and a second limiting plate; a rotation limiting component for adapting to the placement rotating component and limiting the inner cold shield flap and the outer cold shield flap, the rotation limiting component being disposed on one side of the vacuum chamber flap; the rotation limiting component comprising: a reduction motor, the reduction motor being located below the stepper motor, the rotating part of the reduction motor being connected to a third limiting plate and a fourth limiting plate, both ends of the third limiting plate and both ends of the fourth limiting plate being connected to placement plates, an inner placement cavity being provided between the second limiting plate and the third limiting plate, and an outer placement cavity being provided between the first limiting plate and the fourth limiting plate.

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

[0008] Preferably, the placement of the rotating component further includes: a first rotating shaft, the rotating part of the stepper motor is connected to the first rotating shaft, the first rotating shaft is connected to the first limiting plate through a first connecting plate, the first limiting plate is connected to the second limiting plate through a third connecting plate, a first reduction hole is provided through the upper surface of the first limiting plate and the upper surface of the second limiting plate, and a plurality of first section plates are connected to the inner wall of the first reduction hole, and the first section plates are all located at the turning point of the first limiting plate or the second limiting plate.

[0009] Preferably, the placement rotating component further includes: a second rotating shaft, the rotating part of the reduction motor is connected to the second rotating shaft, a second connecting plate is connected to the side of the second rotating shaft, a plurality of sliding grooves are formed on the upper surface of the second connecting plate, the sliding grooves are adapted to the bottom of the first limiting plate and the bottom of the second limiting plate, the second connecting plate will not contact the first limiting plate and the second limiting plate during rotation, one side of the second connecting plate is connected to one side of the third limiting plate and the fourth limiting plate, a second reducing hole is formed through the upper surface of the third limiting plate and the upper surface of the fourth limiting plate, a plurality of second section plates are connected to the second reducing hole, and an inner cooling screen plate or an outer cooling screen plate is placed on the placement plate.

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

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

[0012] Preferably, one side of the sliding hole is on the same plane as one side of the third limiting plate or one side of the fourth limiting plate, and the baffle extends into the inner placement cavity or the outer placement cavity and pushes the inner cooling screen plate or the outer cooling screen plate.

[0013] Preferably, in the initial state, the rotating limiting component and the placement rotating component are located at the first working position. Both the rotating limiting component and the placement rotating component are located on the outer side of one end of the vacuum chamber flap. One side of the rotating limiting component and one side of the vacuum chamber flap are coplanar, and the placement rotating component is provided on the other side of the rotating limiting component. The rotating limiting component and the placement rotating component are staggered or partially opposite each other. In the rotation state, the baffle extends into the inner placement cavity or the outer placement cavity. The rotating limiting component is stationary, and the placement rotating component rotates. The rotating limiting component and the placement rotating component are staggered. When the placement rotating component rotates to a preset position, it stops. The cooling equipment of the vacuum chamber flap is connected to the cooling pipe of the inner cooling screen flap or the outer cooling screen flap. Then, the placement rotating component decelerates and rotates to the installation position. This is the termination state. The placement rotating component rotates to the second working position.

[0014] Beneficial Effects: This invention provides a tokamak cold shield assembly system for liquid nitrogen rapid cooling pipelines. Compared with existing technologies, it has the following beneficial effects: 1. Two internal or external cold shield plates can be installed on each side of a vacuum chamber plate. The internal and external cold shield plates are placed and rotated into and out of the installation location of the vacuum chamber plate by a rotating component. A rotating limiting component is used to fit and limit the internal and external cold shield plates. Without increasing the space required for the rotating limiting component or the rotating component, one set of internal and external cold shield plates is moved from one end of the vacuum chamber plate into the installation location and assembled. Then, another set of internal and external cold shield plates is moved from the other end of the vacuum chamber plate into the installation location, allowing the two sets of internal and external cold shield plates, as well as the vacuum chamber plate, to be fitted and assembled. The entire tokamak cold shield assembly system has a small footprint, is flexible in operation, and is suitable for assembling two sets of internal and external cold shield plates with the vacuum chamber plate.

[0015] 2. The rotating limiting component and the placement rotating component rotate to the first station. The rotating limiting component and the placement rotating component can be completely or partially offset. When the third limiting plate and the second limiting plate are completely offset, and the first limiting plate and the fourth limiting plate are completely offset, the first placement box and the second placement box are not formed. The inner cooling screen plate or the outer cooling screen plate has a large space to move, which makes it easy to move the inner cooling screen plate or the outer cooling screen plate completely onto the placement plate. When the rotating limiting component and the placement rotating component are partially offset, the part of the third limiting plate and the second limiting plate that are not offset forms the first placement box, and the part of the second limiting plate and the fourth limiting plate that are not offset forms the second placement box. This makes it easy to place the inner cooling screen plate or the outer cooling screen plate onto the placement plate first and move it along the trajectory of the placement plate before entering the first placement box or the second placement box, thus limiting the subsequent movement of the inner cooling screen plate or the outer cooling screen plate.

[0016] 3. Since the rotating limiting components are all positioned directly opposite one side of the vacuum chamber flap, in order to avoid collision between the rotating limiting components and the vacuum chamber flap during rotation, the rotating limiting components cannot enter the inner side of the vacuum chamber flap. The rotating limiting components can only rotate to a position that contacts one side of the vacuum chamber flap. During the process of placing the rotating component from the outside of the vacuum chamber flap to the inside of the vacuum chamber flap, the rotating component is stationary on the outside of the vacuum chamber flap, forming a side plate to assist the rotation of the rotating component and limit the inner or outer cooling screen flap, preventing the inner or outer cooling screen flap from falling out of the placement plate.

[0017] 4. By installing baffles in the inner or outer placement cavity, as the rotating component continues to rotate, the baffles can contact and push the inner or outer cooling screen plates, preventing relative sliding between the inner or outer cooling screen plates and the placement plate. This prevents the inner or outer cooling screen plates from sliding out from one end of the inner or outer placement cavity, ensuring safety and reliability. Furthermore, the baffles are compatible with the placement plate; as the rotating component rotates, the baffles will not contact the rotation limiting component or the vacuum chamber plates, thus not affecting the normal rotation of the rotating component. Attached Figure Description

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

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the present invention.

[0021] Figure 2 This is a diagram showing the separation between the section containing the vacuum chamber and the section containing 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 part containing the internal cooling screen and the external cooling screen.

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

[0025] Figure 6 This is a schematic diagram of the structure for the rotation limiter and the mounting of the rotating component.

[0026] Figure 7 This is a schematic diagram of the rotating limiting component.

[0027] Figure 8 This is a schematic diagram of the structure for placing the rotating component.

[0028] Figure 9 This is a separation diagram of the part containing the geared motor and the parts containing the third and fourth limit plates.

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

[0030] Figure 11 This is a schematic diagram of the structure at the connection between the fourth limiting plate and the extension plate.

[0031] Figure 12 for Figure 11 A structural diagram from another perspective.

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

[0033] Figure 14 This is a structural diagram showing the first and fourth limiting plates being staggered.

[0034] Figure 15 This is a schematic diagram of the structure when the first limiting plate is facing the fourth limiting plate.

[0035] The reference numerals in the figure are as follows: 11. Vacuum chamber flap; 12. Inner cooling screen flap; 13. Outer cooling screen flap; 14. Inner flexible connecting piece; 15. Outer flexible connecting piece; 2. Rotation limiting component; 21. Stepper motor; 22. First rotating shaft; 23. First connecting plate; 24. First limiting plate; 25. First section plate; 26. First reduction hole; 27. Third connecting plate; 28. Second limiting plate; 3. Placement rotating component; 31. Gear motor; 32. Second rotating shaft; 33. Second connecting plate; 34. Sliding groove; 35. Third limiting plate; 36. Fourth limiting plate; 37. Second reduction hole; 38. Second section plate; 39. Placement plate; 41. Extension plate; 42. Twisting groove; 43. Sliding hole; 44. Threaded hole; 45. Baffle; 46. Threaded rod; 51. Inner placement cavity; 52. Outer placement cavity.

[0036] As shown in the figure, specific structures and devices are labeled in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs, and such adjustments or modifications are still included in the scope of the appended claims. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0039] Example 1: As Figure 1 - Figure 15 As shown, an embodiment of the present invention provides a tokamak cold shield assembly system for a liquid nitrogen rapid cooling pipeline, comprising: a placement rotating component 3 for placing the inner cold shield flap 12 and the outer cold shield flap 13 and rotating the flap 11 in and out of the vacuum chamber; the placement rotating component 3 includes: a stepper motor 21, the rotating part of which is connected to a first limiting plate 24 and a second limiting plate 28; and a rotation limiting component 2 for adapting to the placement rotating component 3 and limiting the inner cold shield flap 12 and the outer cold shield flap 13. The component 2 is located on one side of the vacuum chamber flap 11. The rotating limiting component 2 includes: a reduction motor 31, which is located below the stepper motor 21. The rotating part of the reduction motor 31 is connected to a third limiting plate 35 and a fourth limiting plate 36. Both ends of the third limiting plate 35 and both ends of the fourth limiting plate 36 are connected to placement plates 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.

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

[0041] The rotating component 3 also includes: a first rotating shaft 22, the rotating part of the stepper 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 23, the first limiting plate 24 is connected to the second limiting plate 28 through the third connecting plate 27, the upper surface of the first limiting plate 24 and the upper surface of the second limiting plate 28 are both provided with a first reduction hole 26, and the inner wall of the first reduction hole 26 is connected with a number of first section plates 25, and the first section plates 25 are all set at the turning point of the first limiting plate 24 or the second limiting plate 28.

[0042] The rotating component 3 also includes: a second rotating shaft 32, the rotating part of the reduction motor 31 is connected to the second rotating shaft 32, a second connecting plate 33 is connected to the side of the second rotating shaft 32, a number of sliding grooves 34 are opened on the upper surface of the second connecting plate 33, the sliding grooves 34 are adapted to the bottom of the first limiting plate 24 and the bottom of the second limiting plate 28, the second connecting plate 33 will not contact the first limiting plate 24 and the second limiting plate 28 during the rotation process, one side of the second connecting plate 33 is connected to one side of the third limiting plate 35 and the fourth limiting plate 36, a second reducing hole 37 is opened through the upper surface of the third limiting plate 35 and the upper surface of the fourth limiting plate 36, a number of second section plates 38 are connected to the second reducing hole 37, and an inner cooling screen plate 12 or an outer cooling screen plate 13 is placed on the placement plate 39.

[0043] The purpose of the first reduction hole 26 and the second reduction hole 37 is to: remove some material, effectively reducing the weight of the limiting plates (including the first limiting plate 24, the second limiting plate 28, the third limiting plate 35, and the fourth limiting plate 36) without affecting the basic structural strength and function of the plate; improve equipment performance and operating efficiency, and reduce energy consumption; reduce material usage, thereby lowering production costs; the reduction hole design can improve economic benefits while ensuring product quality; the presence of the reduction holes makes it easier to perform cutting, stamping, drilling, and other operations on the limiting plates during processing. For example, during stamping, the reduction holes can reduce material resistance, reduce die wear, and improve processing efficiency and die life; since the limiting plates need to be bent, folded, or deformed, the reduction holes make it easier for the plate to be operated according to design requirements. Because some material is removed, the limiting plates are more likely to deform under stress, thus meeting different shape and structural requirements.

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

[0045] In the initial state, the rotating limiting component 2 and the placement rotating component 3 are located at the first working position. Both the rotating limiting component 2 and the placement rotating component 3 are located on the outer side of one end of the vacuum chamber flap 11. One side of the rotating limiting component 2 and one side of the vacuum chamber flap 11 are coplanar. The placement rotating component 3 is provided on the other side of the rotating limiting component 2. The rotating limiting component 2 and the placement rotating component 3 are staggered or partially opposite each other. In the rotation state, the rotating limiting component 2 is stationary and the placement rotating component 3 rotates. The rotating limiting component 2 and the placement rotating component 3 are staggered. When the placement rotating component 3 rotates to the preset position, it stops. The refrigeration equipment of the vacuum chamber flap 11 is connected to the refrigeration pipe of the inner cooling screen flap 12 or the outer cooling screen flap 13. Then the placement rotating component 3 decelerates and rotates. The placement rotating component 3 rotates to the installation position. At this time, it is the termination state. The placement rotating component 3 rotates to the second working position.

[0046] In use, the stepper motor 21 and the geared motor 31 are started. The rotating part of the stepper motor 21 drives the first limiting plate 24 and the second limiting plate 28 through the first rotating shaft 22 and the first connecting plate 23. The rotating part of the geared motor 31 drives the third limiting plate 35 and the fourth limiting plate 36 through the second rotating shaft 32 and the second connecting plate 33. The rotating limiting member 2 and the placement rotating member 3 rotate to the first working position. The rotating limiting member 2 and the placement rotating member 3 are both located on the outside of one end of the vacuum chamber. At this time, the first limiting plate... One side of 24 is on the same plane as one side of the vacuum chamber flap 11. The side of the rotating limiting member 2 away from the vacuum chamber is on the same plane as the side of the rotating member 3 near the vacuum chamber. The third limiting plate 35 is completely offset from the second limiting plate 28. The first limiting plate 24 is completely offset from the fourth limiting plate 36. They do not form the first and second placement boxes. The inner cooling screen flap 12 or the outer cooling screen flap 13 has a large movable space, which makes it easy to completely move the inner cooling screen flap 12 or the outer cooling screen flap 13 onto the placement plate 39.

[0047] The rotating limiting component 2 and the placement rotating component 3 are partially offset. The third limiting plate 35 and the part of the second limiting plate 28 that are not offset form the first placement box. The part of the second limiting plate 28 and the fourth limiting plate 36 that are not offset form the second placement box. The inner cooling screen flap 12 or the outer cooling screen flap 13 is suspended on the placement plate 39. The inner cooling screen flap 12 or the outer cooling screen flap 13 is pushed into the first placement box or the second placement box. The end of the placement plate 39 near the vacuum chamber flap 11 forms the first placement box or the second placement box, while the end of the placement plate 39 away from the vacuum chamber flap 11 does not form the first placement box or the second placement box. This makes it easier to place the inner cooling screen flap 12 or the outer cooling screen flap 13 on the placement plate 39 first and move it along the trajectory of the placement plate 39 before entering the first placement box or the second placement box. This limits the subsequent movement of the inner cooling screen flap 12 or the outer cooling screen flap 13.

[0048] The size of the placement plate 39 is adapted to the size of the inner cooling screen flap 12 or the outer cooling screen flap 13. When the inner cooling screen flap 12 or the outer cooling screen flap 13 is completely placed on the placement plate 39, the side of the inner cooling screen flap 12 or the outer cooling screen flap 13 away from the vacuum chamber flap 11 is on the same plane as the side of the placement plate 39 away from the vacuum chamber flap 11.

[0049] The geared motor 31 drives the placement rotating member 3 to continue rotating. The friction between the placement plate 39 and the inner cooling screen plate 12 or the outer cooling screen plate 13 is large. During the rotation, the placement plate 39 and the inner cooling screen plate 12 or the outer cooling screen plate 13 are relatively stationary, and the rotation limiting member 2 is stationary. The rotation limiting member 2 and the placement rotating member generate relative displacement. The portion of the third limiting plate 35 facing the second limiting plate 28 and the portion of the second limiting plate 28 facing the fourth limiting plate 36 gradually increases. The inner cooling screen plate 12 or the outer cooling screen plate 13 moves in the inner placement cavity 51 and the outer placement cavity 52. ​​When the side of the inner cooling screen plate 12 or the outer cooling screen plate 13 near the vacuum chamber plate 11 is on the same plane as the side of the rotation limiting member 2 near the vacuum chamber plate 11, the portion of the third limiting plate 35 facing the second limiting plate 28 and the portion of the second limiting plate 28 facing the fourth limiting plate 36 are completely aligned, and the inner placement cavity 51 and the outer placement cavity 52 reach their maximum.

[0050] Since the position of the rotating limiting member 2 is directly opposite one side of the vacuum chamber flap 11, in order to avoid the rotating limiting member 2 colliding with the vacuum chamber flap 11 when rotating, the rotating limiting member 2 cannot enter the inner side of the vacuum chamber flap 11. The rotating limiting member 2 can only rotate to the position that contacts one side of the vacuum chamber flap 11. During the process of placing the rotating member 3 from the outside of the vacuum chamber flap 11 to the inside of the vacuum chamber flap 11, the placing rotating member 3 is stationary on the outside of the vacuum chamber flap 11 to form a side plate, which assists the rotation of the placing rotating member 3 and limits the inner cooling screen flap 12 or the outer cooling screen flap 13 to prevent the inner cooling screen flap 12 or the outer cooling screen flap 13 from falling out of the placement plate 39.

[0051] The placement rotating component 3 continues to rotate, and the rotation limiting component 2 is offset from the placement rotating component. The offset area between the rotation limiting component 2 and the placement rotating component continuously increases. The area of ​​the rotation limiting component 2 used to contact and restrict the side plate (first limiting plate 24 or second limiting plate 28) of the inner cooling screen 12 or the outer cooling screen 13 decreases, but the area of ​​the vacuum chamber wall used to contact the inner cooling screen 12 or the outer cooling screen 13 increases. The vacuum chamber wall replaces the rotation limiting component 2 and plays a limiting role. When the placement rotating component rotates to the preset position (which can be set according to actual production), the placement rotating component stops rotating. At this time, the placement rotating component has not moved to the installation position and has a certain gap with the installation position, which makes it convenient for the staff to connect the refrigeration equipment of the vacuum chamber 11 to the refrigeration pipe of the inner cooling screen 12 or the outer cooling screen 13.

[0052] The rotating component 3 continues to decelerate, and at this time, the rotating component 3 is close to the installation position or about to contact other inner cooling screen plates 12 and outer cooling screen plates 13. The rotation speed of the rotating component 3 is reduced to facilitate observation by the staff. When there is a deviation from the installation position, the rotating component 3 can be stopped for easy control. The inner cooling screen plates 12 and outer cooling screen plates 13 are placed on the placement plate 39 and are supported, which facilitates hoisting and fine adjustment of the position of the inner cooling screen plates 12 and outer cooling screen plates 13. After the inner cooling screen plates 12 and outer cooling screen plates 13 are accurately moved to the installation position, welding or other connection methods are performed.

[0053] Since one vacuum chamber flap 11 can be equipped with two inner cooling screen flaps 12 and outer cooling screen flaps 13, the placement rotating component 3 and the rotation limiting component 2 are rotated to the other side of the vacuum chamber flap 11, thus completing the loading, moving and docking of a set of inner cooling screen flaps 12 and outer cooling screen flaps 13.

[0054] The shape and footprint of the rotating component 3 and the rotating limiting component 2 are adapted to an inner cooling screen plate 12 or an outer cooling screen plate 13, reducing the volume of the rotating component 3 and the rotating limiting component 2. The rotating component 3 and the rotating limiting component 2 can rotate alternately. When the number of vacuum chamber plates 11 connected increases and the rotation space of the rotating component 3 and the rotating limiting component 2 becomes smaller, the rotating component 3 and the rotating limiting component 2 can rotate to a completely aligned position, reducing the footprint 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 rapid cooling pipeline. 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. A screw groove 42 is provided on one side of the extension plate 41, and a sliding hole 43 is provided through one side of the extension plate 41, with one end of the sliding hole 43 communicating with the screw groove 42. A threaded hole 44 is provided through the center of the screw groove 42, and the threaded hole 44 is located in the middle of the sliding hole 43. A baffle 45 is slidably connected to the sliding hole 43, and a threaded rod 46 is connected to one side of the baffle 45. The threaded rod 46 is threadedly connected to the threaded hole 44.

[0056] One side of the sliding hole 43 is on 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 cooling screen plate 12 or the outer cooling screen plate 13. The baffle 45 extends into the inner placement cavity 51 or the outer placement cavity 52.

[0057] In use, after the inner cooling screen plate 12 or the outer cooling screen plate 13 is completely placed on the placement plate 39, part of the baffle 45 passes through the sliding hole 43 and is placed in the inner placement cavity 51 or the outer placement cavity 52. ​​When the threaded rod 46 is turned, the baffle 45 moves out of the sliding hole 43 continuously, and the length of the baffle 45 in the inner placement cavity 51 or the outer placement cavity 52 increases. After the turning is stopped, 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 near the vacuum chamber plate 11 is on the same plane as the side of the inner cooling screen plate 12 away from the vacuum chamber plate 11 or the side of the outer cooling screen plate 13 away from the vacuum chamber plate 11.

[0058] By providing a baffle 45 in the inner placement cavity 51 or the outer placement cavity 52, when the rotating component 3 continues to rotate, the baffle 45 can contact and push the inner cooling screen plate 12 or the outer cooling screen plate 13, preventing relative sliding between the inner cooling screen plate 12 or the outer cooling screen plate 13 and the placement plate 39, and preventing the inner cooling screen plate 12 or the outer cooling screen plate 13 from sliding out from one end of the inner placement cavity 51 or the outer placement cavity 52, ensuring safety and reliability. Furthermore, the baffle 45 is compatible with the placement plate 39; when the rotating component 3 rotates, the baffle 45 will not contact the rotation limiting component 2 or the vacuum chamber plate 11, and will not affect the normal rotation of the rotating component 3.

[0059] If the inner cooling screen plate 12 or the outer cooling screen plate 13 is not placed on the placement plate 39, the threaded rod 46 can be turned to remove the baffle 45 without obstructing the placement of the inner cooling screen plate 12 or the outer cooling screen plate 13 onto the placement plate 39. The installation and disassembly methods are simple and easy to operate.

[0060] Two internal cooling screen plates 12 or external cooling screen plates 13 can be installed on each side of a vacuum chamber plate 11. The internal cooling screen plates 12 and external cooling screen plates 13 are placed and rotated into and out of the installation position of the vacuum chamber plate 11 by placing the rotating component 3. The rotating component 3 is adapted to the rotating component 2 and limits the internal cooling screen plates 12 and external cooling screen plates 13. Without increasing the space of the rotating component 2 and the rotating component 3, one set of internal cooling screen plates 12 and external cooling screen plates 13 is moved from one end of the vacuum chamber plate 11 into the installation position and assembled. Then, another set of internal cooling screen plates 12 and external cooling screen plates 13 is moved from the other end of the vacuum chamber plate 11 into the installation position, so that the two sets of internal cooling screen plates 12 and external cooling screen plates 13, as well as the vacuum chamber plate 11, are adapted and assembled. The entire tokamak cold shield assembly system has a small footprint and is flexible in operation. It is suitable for assembling two sets of inner cold shield plates 12 and outer cold shield plates 13 with vacuum chamber plates 11.

[0061] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details have been described in detail in the above preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0062] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A tokamak cold shield assembly system with a liquid nitrogen rapid cooling pipeline, characterized in that, include: A rotating component (3) is placed for placing the inner cooling screen plate (12) and the outer cooling screen plate (13) and rotating the plate (11) to enter and exit the vacuum chamber. The rotating component (3) includes a stepper motor (21), and the rotating part of the stepper motor (21) is connected to a first limiting plate (24) and a second limiting plate (28). A rotating limiting component (2) is used to fit and place the rotating component (3) and limit the inner cooling screen plate (12) and the outer cooling screen plate (13). The rotating limiting component (2) is set on one side of the vacuum chamber plate (11). The rotating limiting component (2) includes: a reduction motor (31). The reduction motor (31) is located below the stepper motor (21). The rotating part of the reduction motor (31) is connected to a third limiting plate (35) and a fourth limiting plate (36). Both ends of the third limiting plate (35) and both ends of the fourth limiting 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). An inner cooling screen is provided on the inner side of the vacuum chamber flap (11). The inner cooling screen is welded to the inner wall of the vacuum chamber flap (11) through an inner flexible connecting piece (14). An outer cooling screen is provided on the outer side of the vacuum chamber flap (11). The outer cooling screen is welded to the vacuum chamber flap (11) through an outer flexible connecting piece (15). Two inner cooling screen flaps (12) are installed on the inner side of the vacuum chamber flap (11). Two outer cooling 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 coplanar. The two sides of the third limiting plate (35) and the two sides of the fourth limiting plate (36) are coplanar. The rotating component (3) further includes a second rotating shaft (32), the rotating part of the geared motor (31) is connected to the second rotating shaft (32), a second connecting plate (33) is connected to the side of the second rotating shaft (32), and a plurality of sliding grooves (34) are provided on the upper surface of the second connecting plate (33). The sliding grooves (34) are adapted to the bottom of the first limiting plate (24) and the bottom of the second limiting plate (28). The second connecting plate (33) will not interact with the first limiting plate during rotation. (24) The second limiting plate (28) is in contact with the same side of the second connecting plate (33) and the third limiting plate (35) and the fourth limiting plate (36). The upper surface of the third limiting plate (35) and the upper surface of the fourth limiting plate (36) are both provided with a second reduction hole (37). The second reduction hole (37) is connected to several second section plates (38). An inner cooling screen plate (12) or an outer cooling screen plate (13) is placed on the placement plate (39).

2. The tokamak cold shield assembly system for liquid nitrogen rapid cooling pipelines according to claim 1, characterized in that, The placement of the rotating component (3) further includes: a first rotating shaft (22), the rotating part of the stepper 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 (23), the first limiting plate (24) is connected to the second limiting plate (28) through the third connecting plate (27), the upper surface of the first limiting plate (24) and the upper surface of the second limiting plate (28) are both provided with a first reduction hole (26), the inner wall of the first reduction hole (26) is connected with a number of first section plates (25), and the first section plates (25) are all set at the turning point of the first limiting plate (24) or the second limiting plate (28).

3. The tokamak cold shield assembly system for liquid nitrogen rapid cooling pipelines according to claim 2, characterized in that: The second limiting plate (28), the third limiting plate (35), and the placement plate (39) together form the first placement box. The second limiting plate (28) and the third limiting plate (35) are the two side plates of the first placement box. The first limiting plate (24), the fourth limiting plate (36), and the placement plate (39) together form the second placement box. The first limiting plate (24) and the fourth limiting plate (36) are the two side plates of the second placement box.

4. The tokamak cold shield assembly system for liquid nitrogen rapid cooling pipelines according to claim 3, characterized in that: 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). 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). The threaded hole (44) is located in the middle of the sliding hole (43). A baffle (45) is slidably connected to the sliding hole (43). A threaded rod (46) is connected to one side of the baffle (45). The threaded rod (46) is threadedly connected to the threaded hole (44).

5. The tokamak cold shield assembly system for liquid nitrogen rapid cooling pipelines according to claim 4, characterized in that: One side of the sliding hole (43) is on the same plane as one side of the third limiting plate (35) or one side of the fourth limiting plate (36), and the baffle (45) extends into the inner placement cavity (51) or the outer placement cavity (52) and pushes the inner cooling screen plate (12) or the outer cooling screen plate (13).

6. The tokamak cold shield assembly system for liquid nitrogen rapid cooling pipelines according to claim 5, characterized in that: In the initial state, the rotation limiting member (2) and the placement rotating member (3) are located at the first working position. The rotation limiting member (2) and the placement rotating member (3) are both located on the outside of one end of the vacuum chamber flap (11). One side of the rotation limiting member (2) and one side of the vacuum chamber flap (11) are coplanar. The placement rotating member (3) is provided on the other side of the rotation limiting member (2). The rotation limiting member (2) and the placement rotating member (3) are staggered or partially opposite to each other. In the rotation state, the baffle (45) extends into the inner placement cavity (51) or is placed outside. In cavity (52), the rotation limiting member (2) is stationary, the placement rotating member (3) rotates, the rotation limiting member (2) and the placement rotating member (3) are staggered, and when the placement rotating member (3) rotates to the preset position, it stops. The refrigeration equipment of the vacuum chamber flap (11) is connected to the refrigeration pipe of the inner cooling screen flap (12) or the outer cooling screen flap (13). Then the placement rotating member (3) decelerates and rotates. The placement rotating member (3) rotates to the installation position. At this time, it is the termination state. The placement rotating member (3) rotates to the second working position.

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