A gas handling apparatus for superconducting magnet vessel welding
Patent Information
- Application Number
- CN202522384921.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-11
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-11
AI Technical Summary
In existing technologies, the sealing effect of superconducting magnet containers during welding is poor, leading to the leakage of harmful gases, which affects the health of operators. Furthermore, the lack of secure fixing results in frequent detachment and a heavy cleaning burden.
The system employs a combination of a stainless steel circular plate and a soft rubber sealing layer, along with a screw, limit clips, and fasteners to create a reliable seal. It also works in conjunction with an external exhaust system via an extraction pipe to continuously extract harmful gases and create a negative pressure environment.
It effectively prevents the leakage of harmful gases, improves the working environment, increases welding efficiency, reduces cleaning burden, and shortens the welding cycle.
Smart Images
Figure CN224934601U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of superconducting magnet container welding technology, and more specifically, to a gas treatment device for welding superconducting magnet containers. Background Technology
[0002] In the manufacturing process of superconducting magnets, the welding of the 4K container is a critical process that requires argon arc welding in a vacuum environment. The high temperatures generated during welding cause materials such as FR4 inside the container to decompose, releasing strongly pungent and harmful gases.
[0003] Currently, the traditional method involves sealing the container opening with foam blocks, inserting a plastic extraction tube, and then securing it to the outer wall of the container with large areas of transparent tape. However, this method has limited sealing capabilities, allowing harmful gases to leak continuously, affecting the health of operators and surrounding workers, and causing symptoms such as dizziness and throat discomfort. Furthermore, the installation is often not secure, causing the extraction tube and foam blocks to frequently detach when the magnet rotates on the roller frame, requiring repeated stops for re-secured installation. Additionally, a large amount of tape residue adheres to the outer wall of the container, increasing the cleaning burden for subsequent processes.
[0004] Therefore, this application proposes a gas handling device for welding superconducting magnet containers to solve the above-mentioned technical problems. Summary of the Invention
[0005] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.
[0006] The purpose of this application is to address the shortcomings of the prior art by providing a gas treatment device for welding superconducting magnet containers, thereby solving the problems of poor sealing effect, unreliable fixation, and tape residue that lead to harsh working environment, frequent operation interruptions, and cumbersome subsequent cleaning.
[0007] To achieve the above objectives, this application provides the following technical solution: A gas handling device for welding a superconducting magnet container includes a stainless steel circular plate. An extraction pipe is fixed to the middle of the outer side of the stainless steel circular plate. A soft rubber sealing layer for extending into the superconducting magnet container is provided on the inner side of the stainless steel circular plate. An extraction port communicating with the extraction pipe is opened in the middle of the soft rubber sealing layer. A limit strip is also provided on the side of the soft rubber sealing layer away from the stainless steel circular plate. A screw that horizontally penetrates the stainless steel circular plate and the soft rubber sealing layer is fixed on the limit strip. A fastener is also fitted on the end of the screw that extends out of the stainless steel circular plate.
[0008] Furthermore, the limiting strip is a long strip structure used to be clamped onto the inner wall of the container as an inner lining support.
[0009] Furthermore, at least two limiting strips are provided and symmetrically distributed on the side of the soft rubber sealing layer away from the stainless steel circular plate.
[0010] Furthermore, the stainless steel circular plate and the soft rubber sealing layer are respectively provided with through holes for the screw to pass through, and a washer is also provided on the outer side of the stainless steel circular plate and fitted onto the screw. The washer is located between the outer side of the stainless steel circular plate and the screw.
[0011] Furthermore, a limit nut is fixed to one end of the screw that extends beyond the outer side of the stainless steel circular plate.
[0012] Furthermore, the curvature of the stainless steel circular plate matches the outer surface of the superconducting magnet container.
[0013] Furthermore, the fastener is a butterfly nut.
[0014] The beneficial effects of this application are as follows: In the above solution, the soft rubber sealing layer, the arc-shaped stainless steel round plate, and the fastening mechanism consisting of screws, limit strips and fasteners can form a reliable seal at the container opening, effectively preventing the leakage of pungent and harmful gases generated during welding, which is conducive to protecting the physical and mental health of operators and improving the overall workshop working environment. In the above solution, the exhaust pipe fixed on the stainless steel circular plate, in conjunction with the external exhaust equipment, can continuously extract harmful gases from the container and create negative pressure inside, promoting the circulation of internal air and external cold air, thus achieving the dual effect of thoroughly eliminating odors and accelerating the cooling of the welding area. In summary, this device not only solves the problems of gas leakage and frequent detachment caused by poor sealing and insecure fixing in traditional methods, but also avoids the cleaning burden caused by tape application, providing convenience for the next process. Overall, it has good performance and helps improve work efficiency. Attached Figure Description
[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.
[0016] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.
[0017] In the attached diagram: Figure 1 This is a schematic diagram of the structure of this application; Figure 2 This is a front view of this application; Figure 3 This is a rear view of this application; Figure 4 This is a side view of this application.
[0018] 1. Stainless steel round plate; 2. Air extraction pipe; 3. Soft rubber sealing layer; 301, air extraction port; 4. Limiting strip; 5. Screw; 6. Fastener; 7. Limiting nut. Detailed Implementation
[0019] The gas treatment apparatus for welding superconducting magnet containers provided in this application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should also be noted that, in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can also use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this application.
[0020] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.
[0021] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.
[0022] The present application will now be described in detail with reference to the accompanying drawings and embodiments.
[0023] Reference Figure 1-4As shown, this utility model provides a gas treatment device for welding superconducting magnet containers, including a main structure of a stainless steel circular plate 1 with an arc matching the outer surface of the superconducting magnet container. In this embodiment, the stainless steel circular plate 1 has a thickness of 2mm, a chord length of 160mm, and a chord height of 5mm. Its arc design can form a good fit with the outer surface of the 4K container. A suction pipe 2 is fixedly connected to the middle of the outer side of the stainless steel circular plate 1. The suction pipe 2 is made of a stainless steel circular tube with a length of 60mm and a diameter of 32mm. The end of the pipe that extends into the container is cut at a 45-degree angle to optimize the airflow channel, and an anti-detachment ring with a height of about 10mm is processed on the outer circular opening on the flat end side to prevent the suction hose from loosening during equipment operation.
[0024] A soft rubber sealing layer 3 is tightly attached to the inner side of the stainless steel circular plate 1. In this embodiment, the soft rubber sealing layer 3 is preferably made of 5mm thick white soft rubber. Its material properties can ensure the sealing effect and adapt to the slight unevenness of the container surface. An air extraction port 301 connected to the air extraction pipe 2 is opened in the middle to form a complete gas extraction channel.
[0025] At least two limiting strips 4 are provided on the side of the soft rubber sealing layer 3 away from the stainless steel circular plate 1 as inner lining supports. In this embodiment, the limiting strips 4 are preferably made of stainless steel strips with a thickness of 6 mm and a length of 140 mm, and their long side direction is basically parallel to the container axis, which can provide a stable support base inside the container. These limiting strips 4 are connected to the external structure by horizontally arranged screws 5. The screws 5 are preferably standard parts of M8×40 mm, and each limiting strip 4 is usually provided with two screws 5.
[0026] Specifically, the screw 5 passes through the soft rubber sealing layer 3 and the corresponding through holes on the stainless steel circular plate 1 in sequence before extending outwards. A washer and a fastener 6 are sequentially fitted onto its extended end. The washer, located between the stainless steel circular plate 1 and the fastener 6, disperses the clamping force and prevents localized deformation of the stainless steel circular plate 1 surface when the fastener 6 is tightened. To ensure safe disassembly, a limiting nut 7 is threadedly connected to the end of the screw 5. This limiting nut 7 prevents the fastener 6 from falling off when fully retracted, thus avoiding the risk of the limiting strip 4 accidentally falling into the container. In this embodiment, the fastener 6 is a butterfly nut.
[0027] Working Principle: During the actual installation of this gas handling device for welding superconducting magnet containers, the operator first loosens the fasteners 6 to the limiting nut 7, then determines the installation direction so that the extraction pipe 2 faces downwards to facilitate the extraction operation. After aligning the assembly with the container opening, the limiting strip 4 is inserted into the container and pushed upwards until it is fully inserted, then pulled downwards until the root of the screw 5 contacts the edge of the neck opening. At this point, the device reaches its initial positioning state. Finally, all fasteners 6 are tightened evenly. The tension of the screw 5 causes the stainless steel circular plate 1 and the limiting strip 4 to move closer together, thereby tightly pressing the soft rubber sealing layer 3 onto the outer wall of the container to form a reliable annular seal.
[0028] When the external exhaust system draws air through the exhaust pipe 2, harmful gases generated during welding inside the container are continuously extracted from the exhaust port 301. Simultaneously, a slight negative pressure environment is created inside the container, while external air is introduced through the gap between the container and its end cap. This process effectively purifies the working environment, preventing harmful gases from affecting operators, and promotes air circulation in the welding area, accelerating the cooling process and thus improving the efficiency and quality of the welding operation. Practical application verification shows that using this device significantly reduces the welding cycle of the 4K container from 13 days to 7 days, and solves technical problems such as tape residue and frequent detachment in traditional methods.
[0029] In summary, this device not only solves the problems of gas leakage and frequent detachment caused by poor sealing and insecure fixing in traditional methods, but also avoids the cleaning burden caused by tape application, providing convenience for the next process. Overall, it has good performance and helps improve work efficiency.
[0030] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.
[0031] It should be noted that this application covers any alternatives, modifications, equivalent methods, and solutions made within the spirit and scope of this application. To provide the public with a thorough understanding of this application, specific details are described in detail in the preferred embodiments, while those skilled in the art can fully understand this application without these details. Furthermore, to avoid unnecessary confusion regarding the substance of this application, well-known methods, processes, procedures, components, and circuits are not described in detail.
[0032] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.
Claims
1. A gas treatment device for welding superconducting magnet containers, characterized in that, The device includes a stainless steel circular plate (1), with an air extraction pipe (2) fixed to the middle of the outer side of the stainless steel circular plate (1). A soft rubber sealing layer (3) for inserting into the superconducting magnet container is provided on the inner side of the stainless steel circular plate (1). An air extraction port (301) for communicating with the air extraction pipe (2) is opened in the middle of the soft rubber sealing layer (3). A limit strip (4) is also provided on the side of the soft rubber sealing layer (3) away from the stainless steel circular plate (1). A screw (5) that horizontally penetrates the stainless steel circular plate (1) and the soft rubber sealing layer (3) is fixed on the limit strip (4). A fastener (6) is also fitted on the end of the screw (5) that goes out of the stainless steel circular plate (1).
2. The gas treatment device for welding superconducting magnet containers according to claim 1, characterized in that: The limiting strip (4) is a long strip structure used to be clamped onto the inner wall of the container as an inner lining support.
3. The gas treatment device for welding superconducting magnet containers according to claim 2, characterized in that: At least two of the limiting strips (4) are provided and are symmetrically distributed on the side of the soft rubber sealing layer (3) away from the stainless steel round plate (1).
4. The gas treatment device for welding superconducting magnet containers according to claim 1, characterized in that: The stainless steel circular plate (1) and the soft rubber sealing layer (3) are respectively provided with through holes for the screw (5) to pass through. A gasket with a head sleeve on the screw (5) is also provided on the outside of the stainless steel circular plate (1). The gasket is located between the outside of the stainless steel circular plate (1) and the screw (5).
5. The gas treatment device for welding superconducting magnet containers according to claim 1, characterized in that: A limit nut (7) is fixed to one end of the screw (5) that extends out of the outer side of the stainless steel circular plate (1).
6. The gas treatment device for welding superconducting magnet containers according to claim 1, characterized in that: The curvature of the stainless steel circular plate (1) matches the outer surface of the superconducting magnet container.
7. The gas treatment device for welding superconducting magnet containers according to claim 1, characterized in that: The fastener (6) is a butterfly nut.