A superconducting magnet vessel welding device with a ring-shaped copper plate directly conducting water cooling

Abstract

The application discloses a kind of superconducting magnet vessel welding devices of annular copper plate direct conduction water cooling, it belongs to the field of welding device. Including annular cooling inner copper plate, welding groove positioning block, cooling tool support ring, cooling water pipe support ring, annular cooling outer copper plate and screw rod, the annular cooling inner copper plate and annular cooling outer copper plate are opened annular semicircular groove along annular respectively, and two semicircular grooves are overlapped to form closed annular passage;Water inlet pipe orifice and annular passage one end are connected, water outlet pipe orifice and annular passage other end are connected. The beneficial effects of the application are to provide a kind of superconducting magnet vessel welding devices of annular copper plate direct conduction water cooling, by quickly taking away welding heat, reduce weld area temperature, avoid the adverse effects caused by high temperature to weld structure, to effectively improve the mechanical properties of weld.

Description

Technical Field

[0001] This application relates to the field of welding equipment, and more specifically, to a welding device for a superconducting magnet container with direct water cooling via an annular copper plate. Background Technology

[0002] The system contains the core component of the superconducting magnet, the superconducting coil, which is fixed to a coil support. The coil support is made of fiberglass reinforced plastic (FRP), which is formed by impregnating glass fiber filaments with epoxy resin and then winding and curing it. Epoxy resin is an organic material and generally cannot withstand temperatures exceeding 150°C for extended periods. FRP, formed by impregnating glass fiber filaments with epoxy resin and curing it, generally cannot withstand temperatures above 250°C for extended periods. The coil support inside the cryogenic container of the superconducting magnet is primarily formed by impregnating glass fiber filaments with epoxy resin, winding them around the inner cylinder, and then baking and curing them. This ensures the FRP is tightly bonded to the inner cylinder, providing support for the superconducting wire.

[0003] During welding, the arc temperature can reach tens of thousands of degrees Celsius, the weld pool temperature can reach thousands of degrees Celsius, and the temperature of the heat-affected zone (HAZ) can reach several hundred degrees Celsius. If the HAZ contains a coil frame, the heat generated during welding can burn the epoxy resin substrate of the coil support, thereby damaging its structure and affecting the strength, rigidity, and insulation performance of the coil support. To address these adverse factors, a suitable cooling device is needed during the welding process to rapidly dissipate the welding heat and control the temperature of the HAZ and its vicinity in the circumferential weld.

[0004] Currently, common cooling methods during the welding of superconducting magnet containers include natural cooling and air cooling. Natural cooling has a slow rate and cannot meet the requirements for rapid cooling. Air cooling has a moderate cooling rate, but for welding where the frame support is close to the stainless steel, there is still a risk of high-temperature failure. This can easily cause the epoxy resin adhesive layer between the stainless steel cylinder and the FR4 coil frame to crack or burn due to heat. These defects can cause unnecessary mechanical movement of the coil during excitation, leading to quench loss and ultimately rendering the NMR equipment inoperable. Utility Model Content

[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 existing technologies by providing a welding device for superconducting magnet containers using direct water conduction cooling via an annular copper plate. This addresses the problem that current cooling methods for welding superconducting magnet containers, such as natural cooling and air cooling, are slow and cannot meet the requirements for rapid temperature reduction.

[0007] To achieve the above objectives, this application provides the following technical solution: A welding device for a superconducting magnet container with direct water cooling via an annular copper plate includes an inner annular cooling copper plate, a welding groove positioning block, a cooling fixture support ring, a cooling water pipe support ring, an outer annular cooling copper plate, and a lead screw. The inner and outer annular cooling copper plates each have annular semicircular grooves along the annulus, and the two semicircular grooves overlap to form a closed annular channel. An external water inlet is connected to one end of the annular channel, and an external water outlet is connected to the other end of the annular channel.

[0008] Preferably, the welding groove positioning block is connected to the inner annular cooling copper plate, the outer annular cooling copper plate, and the nylon pressure block via screws to achieve fixed positioning.

[0009] Preferably, the nylon pressure block is disposed between the inner annular cooling copper plate and the outer annular cooling copper plate. The lead screw passes through the through hole on the cooling fixture support ring and pushes into the nylon pressure block to adjust the clamping force of the nylon pressure block on the outer annular cooling copper plate.

[0010] Preferably, the cooling fixture support ring is sleeved on the outside of the annular cooling inner copper plate to provide support for the nylon pressure block, and the cooling fixture support ring is provided with a through hole for the lead screw to pass through.

[0011] Preferably, the cooling water pipe support ring is provided with holes for the inlet and outlet water pipes to pass through, one end of the cooling water pipe support ring support rod is connected to the cooling fixture support ring, and the other end is connected to the cooling water pipe support ring to fix the cooling water pipe support ring.

[0012] Preferably, it also includes a nut, which is threaded into the lead screw and used to fix the position of the lead screw on the cooling fixture support ring.

[0013] Preferably, a fine copper braided wire is wound around the outer periphery of the annular cooling inner copper plate, with one end of the copper braided wire fixed to one side of the annular cooling inner copper plate and the other end fixed to the other side of the annular cooling inner copper plate, so as to enhance the fit with the welding wall of the high-temperature container.

[0014] The beneficial effects of this application are as follows: by directly conducting water cooling structure through an annular copper plate, combined with nylon pressure block and screw adjustment mechanism, welding heat is quickly removed, the temperature of the weld area is reduced, and the adverse effects of high temperature on weld structure are avoided, thereby effectively improving the mechanical properties of weld.

[0015] This avoids damage to the coil frame in the heat-affected zone of welding due to prolonged exposure to high temperatures, prevents the epoxy resin substrate from cracking or burning due to heat, ensures the strength, rigidity, and insulation performance of the coil support, protects the coil frame, and prevents unnecessary mechanical movement of the coil during excitation due to damage to the coil frame, thereby preventing quenching and ensuring the normal operation and stable operation of the NMR equipment. Attached Figure Description

[0016] 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.

[0017] 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.

[0018] In the attached diagram: Figure 1 Top view of a copper ring pad direct water-cooled cooling device; Figure 2 Isometric drawing of a copper ring pad direct water-cooled cooling device; Figure 3 Front view of a direct water-cooled cooling device with copper ring pads; Figure 4 A partial view showing the fit between the inner and outer copper plates of the cooling device.

[0019] 1. Annular cooling inner copper plate; 2. Nylon pressure block; 3. Cooling fixture support ring; 4. Cooling water pipe support ring; 5. Welding groove positioning block; 6. Lead screw; 7. Cooling water pipe support ring support rod; 8. Nut; 9. External water inlet; 10. Annular cooling outer copper plate; 11. External water outlet. Detailed Implementation

[0020] The following is a detailed description of a welding device for a superconducting magnet container with direct water cooling via an annular copper plate, provided in this application, with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this application.

[0021] 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 describing a specific feature, structure, or characteristic in conjunction with embodiments, the implementation of such feature, structure, or characteristic in conjunction with other embodiments, whether or not explicitly described, should be within the knowledge of those skilled in the art.

[0022] 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.

[0023] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] Reference Figure 1-4 As shown, this utility model provides a welding device for a superconducting magnet container with direct water cooling via annular copper plates. It includes an annular inner cooling copper plate 1, a welding groove positioning block 5, a cooling fixture support ring 3, a cooling water pipe support ring 4, an annular outer cooling copper plate 10, and a lead screw 6. Both the annular inner and outer cooling copper plates 1 and 10 have annular semi-circular grooves along their rings, and these grooves overlap to form a closed annular channel. An external water inlet 9 is connected to one end of the annular channel, and an external water outlet 11 is connected to the other end. It also includes nuts 8, which are threaded onto the lead screw 6 to fix its position on the cooling fixture support ring 3. Nuts 8 are located on both the inner and outer sides of the lead screw 6, and the two symmetrical nuts 8 need to be adjusted simultaneously to tighten the nylon pressure block 2.

[0025] The welding groove positioning block 5 is connected to the inner annular cooling copper plate 1, the outer annular cooling copper plate 10, and the nylon pressure block 2 respectively by screws to achieve fixed positioning.

[0026] The nylon pressure block 2 is set between the inner annular cooling copper plate 1 and the outer annular cooling copper plate 10. The lead screw 6 passes through the through hole on the cooling fixture support ring 3 and pushes into the nylon pressure block 2 to adjust the clamping force of the nylon pressure block 2 on the outer annular cooling copper plate 10.

[0027] The cooling fixture support ring 3 is sleeved on the outside of the annular cooling inner copper plate 1 to provide support for the nylon pressure block 2, and the cooling fixture support ring 3 is provided with a through hole for the lead screw 6 to pass through.

[0028] The cooling water pipe support ring 4 has holes for the inlet and outlet water pipes to pass through. One end of the cooling water pipe support ring 7 is connected to the cooling fixture support ring 3, and the other end is connected to the cooling water pipe support ring 4 to fix the cooling water pipe support ring 4.

[0029] Fine copper braided wire is wrapped around the outer periphery of the annular cooling inner copper plate 1. One end of the copper braided wire is fixed to one side of the annular cooling inner copper plate 1, and the other end is fixed to the other side of the annular cooling inner copper plate 1 to enhance the fit with the welding wall of the high-temperature container.

[0030] Working Principle: This annular copper plate direct-conduction water-cooled superconducting magnet container welding device primarily employs non-consumable electrode tungsten inert gas (TIG) welding, achieving weld temperatures up to 500℃. After the external chiller is started, cooled water enters the closed-loop channel formed by the annular inner copper plate 1 and annular outer copper plate 10 through the external inlet pipe 9. The cooling water flows through the closed annular channel, absorbing the high temperature of the weld area before being discharged from the external outlet pipe 11. It then re-enters the chiller for further cooling and circulates back to the external inlet pipe 9. During welding, the annular inner copper plate 1 and annular outer copper plate 10 absorb heat from the weld area through heat conduction, transferring the heat to the cooling water within the closed channel, which then dissipates the heat. The welding groove positioning block 5 is fixed and limited by screws. The nylon pressure block 2 is pressed against the annular cooling outer copper plate 10 and the welding container wall by the screw 6. The cooling tooling support ring 3 provides support force. The cooling water pipe support ring 4 and the cooling water pipe support ring support rod 7 realize the outlet and fixation of the water pipe. The copper plate cooling water channel is not limited to one circle. It can be a multi-circle, multi-layer contact cooling method.

[0031] 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.

[0032] 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.

[0033] 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 welding device for a superconducting magnet container with direct water cooling via an annular copper plate, comprising an annular inner cooling copper plate (1), a cooling fixture support ring (3), a cooling water pipe support ring (4), a welding groove positioning block (5), a lead screw (6), an external water inlet (9), and an annular outer cooling copper plate (10), characterized in that: The inner annular cooling copper plate (1) and the outer annular cooling copper plate (10) each have annular semicircular grooves along the annulus, and the two semicircular grooves overlap to form a closed annular channel. The external water inlet (9) is connected to one end of the annular channel, and the external water outlet (11) is connected to the other end of the annular channel.

2. The welding device for superconducting magnet containers with direct water cooling via annular copper plates according to claim 1, characterized in that: The welding groove positioning block (5) is connected to the inner annular cooling copper plate (1), the outer annular cooling copper plate (10), and the nylon pressure block (2) respectively by screws to achieve fixed positioning.

3. The welding device for superconducting magnet containers with direct water cooling via annular copper plates according to claim 2, characterized in that: The nylon pressure block (2) is placed between the inner annular cooling copper plate (1) and the outer annular cooling copper plate (10). The lead screw (6) passes through the through hole on the cooling fixture support ring (3) and pushes into the nylon pressure block (2). The clamping force of the nylon pressure block (2) on the outer annular cooling copper plate (10) is adjusted.

4. The welding device for superconducting magnet containers with direct water cooling via annular copper plates according to claim 1, characterized in that: The cooling fixture support ring (3) is sleeved on the outside of the annular cooling inner copper plate (1) to provide support for the nylon pressure block (2), and the cooling fixture support ring (3) is provided with a through hole for the lead screw (6) to pass through.

5. The welding device for superconducting magnet containers with direct water cooling via annular copper plates according to claim 1, characterized in that: The cooling water pipe support ring (4) is provided with holes for the inlet and outlet water pipes to pass through. One end of the cooling water pipe support ring support rod (7) is connected to the cooling tool support ring (3), and the other end is connected to the cooling water pipe support ring (4) to fix the cooling water pipe support ring (4).

6. The welding device for superconducting magnet containers with direct water cooling via annular copper plates according to claim 1, characterized in that: It also includes a nut (8), which is threaded to the lead screw (6) and is used to fix the position of the lead screw (6) on the cooling fixture support ring (3).

7. The welding device for superconducting magnet containers with direct water cooling via annular copper plates according to claim 1, characterized in that: Fine copper braided wire is wound around the outer periphery of the annular cooling inner copper plate (1). One end of the copper braided wire is fixed to one side of the annular cooling inner copper plate (1), and the other end is fixed to the other side of the annular cooling inner copper plate (1) to enhance the fit with the welding wall of the high-temperature container.

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