High-power coupler welding and fixing clamping device

Abstract

This utility model discloses a high-power coupler welding and fixing clamping device for clamping and fixing the outer conductor assembly and inner conductor assembly of a high-power coupler to both ends of a ceramic window. It includes a clamping base, a screw, an elastic component, and a first nut. The clamping base is fixedly connected to the end of the outer conductor assembly furthest from the ceramic window. The screw passes sequentially through the clamping base, the outer conductor assembly, the ceramic window, and the inner conductor assembly, with one end of the screw fixed relative to the clamping base and the other end extending beyond the inner conductor assembly. The first nut is threadedly connected to the other end of the screw. The elastic component is disposed between the first nut and the inner conductor assembly. This utility model can quickly achieve precise positioning and fixing of the high-power coupler components, effectively avoiding the risk of the ceramic window falling off due to insufficient fixing force, and also avoiding excessive pressure on the ceramic window and weld, effectively preventing weld collapse and ensuring welding quality.

Description

Technical Field

[0001] This utility model relates to the field of welding fixture technology, and in particular to a high-power coupler welding fixing clamping device. Background Technology

[0002] In accelerator systems, high-power input couplers play a crucial role and are an indispensable component for ensuring the stable and efficient operation of accelerators. They are responsible for the important task of efficiently transmitting high-power microwave energy to the accelerator cavity, and their performance directly affects the overall efficiency of the accelerator.

[0003] Electron beam welding is widely used in the manufacturing of high-power input couplers because it enables high-quality connections. However, most high-power input couplers currently use tail-top fixing during electron beam welding, which has significant drawbacks.

[0004] On the one hand, the tail-top fixing operation is extremely cumbersome, requiring operators to spend a lot of time on fine adjustments. Due to the complex structure of the high-power coupler and the extremely high requirements for the relative positional accuracy of each component during electron beam welding, operators often need to repeatedly adjust the position, angle, and fixing force of the tail-top to ensure that the ceramic window, outer conductor assembly, and inner conductor assembly are in the correct position during welding. This process not only consumes a lot of time but also seriously reduces production efficiency.

[0005] On the other hand, the fixing force at the tail is difficult to control precisely. If the fixing force is insufficient, the ceramic window can easily detach during welding due to vibrations and thermal stress generated during the process. Conversely, if the fixing force is too strong, it will put excessive pressure on the ceramic window and the weld, easily causing the electron beam weld to collapse. Weld collapse will seriously affect the strength and sealing of the welded area, leading to a decrease in the performance of the high-power coupler and failing to meet the high-performance requirements of the accelerator. Therefore, it is necessary to improve the existing technology to overcome its shortcomings. Utility Model Content

[0006] The problem to be solved by this utility model is to provide a high-power coupler welding and fixing clamping device to overcome the defects of the existing technology in welding and fixing high-power couplers, such as inconvenience in fixing, need for long-term adjustment, and difficulty in accurately controlling the force.

[0007] The technical solution adopted by this utility model to solve its technical problem is: a high-power coupler welding and fixing clamping device, used to clamp and fix the outer conductor assembly and inner conductor assembly of the high-power coupler to both ends of a ceramic window, including: a clamping base, a screw, an elastic component and a first nut. The clamping base is fixedly connected to the end of the outer conductor assembly away from the ceramic window. The screw is sequentially inserted into the clamping base, the outer conductor assembly, the ceramic window and the inner conductor assembly, with one end of the screw fixed relative to the clamping base and the other end of the screw extending out of the inner conductor assembly. The first nut is threadedly connected to the other end of the screw, and the elastic component is disposed between the first nut and the inner conductor assembly.

[0008] As a further improvement of this utility model, the high-power coupler welding and fixing clamping device also includes a coaxial retainer. The outer conductor assembly includes a bellows and a first flange and a second flange respectively connected to both ends of the bellows. The coaxial retainer is fixedly connected between the first flange and the second flange so that the first flange and the second flange are coaxially distributed.

[0009] As a further improvement of this utility model, the number of coaxial cages is at least three, and the at least three coaxial cages are evenly distributed in the circumferential direction of the first flange and the second flange.

[0010] As a further improvement of this utility model, the coaxial retainer includes a connecting body part parallel to the screw and a fixing foot part vertically connected to both ends of the connecting body part. The two fixing feet parts are respectively fixed to the first flange and the second flange by bolts, and the two fixing feet parts are in contact with the end faces of the corresponding first flange / second flange.

[0011] As a further improvement of this utility model, at least one of the fixed feet is provided with a waist-shaped hole.

[0012] As a further improvement of this utility model, the clamping base is disposed on one side of the first flange, and the clamping base is fixedly connected to the first flange and the corresponding fixing foot by bolts.

[0013] As a further improvement of this utility model, the elastic component is any one of a spring washer, a disc spring, or a helical spring.

[0014] As a further improvement of this utility model, the high-power coupler welding and fixing clamping device also includes a second nut, and one end of the screw is fixed relative to the clamping base by the second nut.

[0015] As a further improvement of this utility model, the clamping base is provided with a central hole for the screw to pass through, and the clamping base is also provided with a clamping part for external welding equipment to clamp, and a flange part formed by one end of the clamping part extending radially outward and conforming to the first flange.

[0016] The beneficial effects of this utility model are as follows: This utility model provides a high-power coupler welding and fixing clamping device. Through the coordinated use of the clamping base, screw, elastic component, and first nut, it can quickly achieve precise positioning and fixing of the outer conductor assembly, inner conductor assembly, and ceramic window of the high-power coupler. The elastic component, positioned between the first nut and the inner conductor assembly, forms an elastic fixing structure that can adaptively adjust the fixing force on the ceramic window during welding. This not only effectively avoids the risk of the ceramic window falling off due to insufficient fixing force, but also maintains stable clamping of the ceramic window through its own deformation even under welding vibration or thermal stress, ensuring smooth welding. It also avoids applying excessive pressure to the ceramic window and weld, effectively preventing weld collapse and ensuring the quality of the welded part, thus ensuring the high-power coupler has good performance. Furthermore, this utility model uses a coaxial retainer fixedly connected between the first and second flanges of the outer conductor assembly, thereby providing rigid support and fixing the bellows. This ensures that the first and second flanges remain coaxially distributed during welding, preventing the electron beam from deviating from the weld due to the free expansion and contraction of the bellows, thus ensuring welding quality. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A perspective view of the outer conductor assembly, inner conductor assembly, and ceramic window of a high-power coupler in an unsoldered state; Figure 2 The three-dimensional high-power coupler welding and fixing clamping device of this utility model Figure 1 ; Figure 3 The three-dimensional high-power coupler welding and fixing clamping device of this utility model Figure 2 ; Figure 4 This is a cross-sectional view of the high-power coupler welding and fixing clamping device of this utility model.

[0019] Referring to the accompanying drawings, the following explanations are provided: 1. Outer conductor assembly; 101. Bellows; 102. First flange; 103. Second flange; 2. Inner conductor assembly; 3. Ceramic window; 4. Clamping base; 401. Clamping part; 402. Flange part; 5. Screw; 6. Elastic component; 7. First nut; 8. Coaxial retainer; 801. Connecting body part; 802. Fixing foot part; 8021. Waist-shaped hole; 9. Second nut. Detailed Implementation

[0020] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0021] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0023] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The illustrations only show the components related to this application and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0024] Additionally, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be carried out without these specific details.

[0025] The technical solutions provided by the various embodiments of this application are described below with reference to the accompanying drawings.

[0026] Figure 1 The diagram shows some components of a high-power coupler to be welded, specifically the outer conductor assembly 1, the inner conductor assembly 2, and the ceramic window 3. This invention provides a high-power coupler welding and fixing clamping device for clamping and fixing the outer conductor assembly 1 and the inner conductor assembly 2 of the high-power coupler to both ends of the ceramic window 3, so that an external electron beam welder can perform electron beam welding on it.

[0027] Among them, the outer conductor assembly 1, the inner conductor assembly 2, and the ceramic window 3 are all hollow structures.

[0028] See Figures 2 to 4 This utility model discloses a high-power coupler welding and fixing clamping device, comprising: a clamping base 4, a screw 5, an elastic component 6, and a first nut 7. The clamping base 4 is fixedly connected to the end of the outer conductor assembly 1 away from the ceramic window 3. The clamping base 4 has a central hole for the screw 5 to pass through. The screw 5 is sequentially inserted into the clamping base 4, the outer conductor assembly 1, the ceramic window 3, and the inner conductor assembly 2. One end of the screw 5 is fixed relative to the clamping base 4, while the other end extends beyond the inner conductor assembly 2. The first nut 7 is threadedly connected to the other end of the screw 5. The elastic component 6 is disposed between the first nut 7 and the inner conductor assembly 2.

[0029] The high-power coupler welding and fixing clamping device proposed in this utility model abandons the cumbersome method of traditional tail-top fixing that requires a long time of adjustment. By using the clamping base 4, screw 5, elastic component 6 and first nut 7 together, it can quickly achieve precise positioning and fixing of the outer conductor assembly 1, inner conductor assembly 2 and ceramic window 3 of the high-power coupler, which greatly saves the preparation time before welding and significantly improves the convenience of electron beam welding. In addition, the elastic component 6 is positioned between the first nut 7 and the inner conductor assembly 2, forming an elastic fixing structure. This structure can adaptively adjust the fixing force on the ceramic window 3 during the welding process. On the one hand, it can effectively avoid the risk of the ceramic window 3 falling off due to insufficient fixing force. Even when vibration or thermal stress occurs during welding, the elastic component 6 can maintain stable clamping of the ceramic window 3 through its own deformation, ensuring the smooth progress of the welding process. On the other hand, the elastic fixing structure can not only ensure sufficient fixing force, but also avoid applying excessive pressure to the ceramic window 3 and the weld. Compared with the traditional tail-top fixing, which may cause the weld to collapse due to excessive force, the elastic fixing structure of this device can ensure the stability of the ceramic window 3 while keeping the pressure on the weld within a reasonable range, thereby effectively preventing weld collapse, ensuring the quality of the welded part, and ensuring that the high-power coupler has good performance.

[0030] It should be noted that the outer conductor assembly 1, the inner conductor assembly 2, and the ceramic window 3 are all the fixed clamping objects of the high-power coupler welding and fixing clamping device of the present invention, and their specific structures are not the improvements to be made in this application. Taking Figure 4 the shown orientation as a reference, the outer conductor assembly 1 includes a first flange 102, an outer conductor reducing pipe, a bellows 101, a second flange 103, an outer conductor exhaust pipe, and an outer conductor copper ring that are sequentially connected from bottom to top. These components have been fixedly connected to form a whole. Ring-shaped welds are provided at both ends of the ceramic window 3. The outer conductor copper ring of the outer conductor assembly 1 and the inner conductor copper ring of the inner conductor assembly 2 are respectively positioned in the welds at both ends of the ceramic window 3 and welded by an electron beam.

[0031] It is worth mentioning that since the middle section of the outer conductor assembly 1 includes a bellows 101, in order to fix the bellows 101 to ensure coaxiality and prevent the electron beam from deviating from the weld during the welding process, the high-power coupler welding and fixing clamping device of the present invention further includes a coaxiality maintaining frame 8. The coaxiality maintaining frame 8 is fixedly connected between the first flange 102 and the second flange 103, thereby playing a rigid support role to fix the bellows 101, so that the first flange 102 and the second flange 103 can always maintain a coaxial distribution during the welding process, preventing the electron beam from deviating from the weld due to the free expansion and contraction of the bellows 101.

[0032] Preferably, the number of the coaxiality maintaining frames 8 is at least three, and specifically four are given in this embodiment. The four coaxiality maintaining frames 8 are all fixedly connected between the first flange 102 and the second flange 103, and the four coaxiality maintaining frames 8 are evenly distributed in the circumferential direction of the first flange 102 and the second flange 103, further enhancing the coaxiality stability of the outer conductor assembly 1, which is crucial for the welding quality of the high-power coupler and can also ensure the stability of the signal transmission of the high-power coupler.

[0033] Referring to Figure 3 , the coaxiality maintaining frame 8 is in a "C" shape, which includes a connecting main body part 801 parallel to the screw 5 and fixed feet 802 vertically connected to both ends of the connecting main body part 801. Installation holes are provided on the first flange 102 and the second flange 103 at equal intervals in a ring shape. Through holes are provided on both of the two fixed feet 802. The two fixed feet 802 are respectively fixed to the first flange 102 and the second flange 103 by bolts, and one of the fixed feet 802 is in contact with the end face of the corresponding first flange 102, and the other fixed foot 802 is in contact with the end face of the corresponding second flange 103, so as to both fix the bellows 101 and ensure the coaxiality of the outer conductor assembly 1, preventing the electron beam from deviating from the weld during the welding process.

[0034] Preferably, the through hole on at least one fixed foot 802 of the coaxial retainer 8 is a waist-shaped hole 8021. This design allows for fine adjustment of the position of the coaxial retainer 8 during installation to facilitate installation.

[0035] In this invention, the clamping base 4 also includes a cylindrical clamping portion 401 and a flange portion 402 extending radially outward from one end of the clamping portion 401. The clamping portion 401 is used for clamping by the chuck of an external electron beam welding machine, preventing direct clamping of the product and thus avoiding damage. The flange portion 402 is modeled after the first flange 102, and the flange portion 402 has the same number of fixing holes as the mounting holes of the first flange 102, which correspond one-to-one, to facilitate fixing the clamping base 4 to the first flange 102 via the flange portion 402.

[0036] Specifically, the clamping base 4 is located on one side of the first flange 102. The flange portion 402 of the clamping base 4 is in close contact with the first flange 102, and the flange portion 402, the first flange 102, and a corresponding fixed foot 802 on the coaxial retainer 8 are all fixedly connected by bolts, which can facilitate disassembly and assembly and improve efficiency.

[0037] All components in this device can be connected and assembled mechanically, which reduces the assembly difficulty and enhances the flexibility of the device.

[0038] For example, the elastic component 6 can be any one of a spring washer, a disc spring, or a helical spring. A suitable elastic component 6 can be flexibly selected based on actual welding requirements and the characteristics of the high-power coupler to achieve the best fixing effect and meet the welding requirements of different application scenarios. In this embodiment, two spring washers are specifically selected as the elastic component 6.

[0039] In addition, the high-power coupler welding and fixing clamping device also includes a second nut 9, and one end of the screw 5 is fixed to the clamping base 4 by the second nut 9. In some embodiments of this utility model, a hexagonal head (similar to a screw structure) can be directly provided at one end of the screw 5, and the hexagonal head of the screw 5 stops and limits the end of the clamping base 4; or one end of the screw 5 can be directly fixed to the clamping base 4.

[0040] It should be noted that although the high-power coupler welding and fixing clamping device described in this utility model mainly describes its application scenario of clamping and fixing the outer conductor assembly 1 and inner conductor assembly 2 of the high-power coupler to the two ends of the ceramic window 3, those skilled in the art should understand that the design concept and technical solution of this device are universal. For other similar products that are structurally and functionally similar to the high-power coupler, applying this device to the clamping and fixing of components of such products without departing from the technical principles and essential spirit of this utility model should be considered as equivalent substitution and also fall within the protection scope of this utility model. This equivalent substitution aims to cover all situations where, based on the concept of this utility model, through reasonable adaptive adjustments, the device can play a similar role in similar technical fields, solve similar technical problems, and achieve similar technical effects.

[0041] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A high power coupler welding fixture for clamping and fixing the outer conductor assembly (1) and the inner conductor assembly (2) of a high power coupler to the two ends of a ceramic window (3) respectively, characterized in that, include: The clamping base (4), screw (5), elastic component (6), and first nut (7) are provided. The clamping base (4) is fixedly connected to the end of the outer conductor assembly (1) away from the ceramic window (3). The screw (5) is sequentially inserted into the clamping base (4), the outer conductor assembly (1), the ceramic window (3), and the inner conductor assembly (2). One end of the screw (5) is fixed relative to the clamping base (4), and the other end of the screw (5) extends out of the inner conductor assembly (2). The first nut (7) is threadedly connected to the other end of the screw (5). The elastic component (6) is disposed between the first nut (7) and the inner conductor assembly (2).

2. The high power coupler solder fixture of claim 1, wherein: It also includes a coaxial retainer (8). The outer conductor assembly (1) includes a bellows (101) and a first flange (102) and a second flange (103) respectively connected to both ends of the bellows (101). The coaxial retainer (8) is fixedly connected between the first flange (102) and the second flange (103) so that the first flange (102) and the second flange (103) are coaxially distributed.

3. The high power coupler solder fixture of claim 2, wherein: The number of coaxial retainers (8) is at least three, and the at least three coaxial retainers (8) are evenly distributed in the circumferential direction of the first flange (102) and the second flange (103).

4. The high power coupler solder fixture of claim 2, wherein: The coaxial retainer (8) includes a connecting body (801) parallel to the screw (5) and fixing feet (802) vertically connected to both ends of the connecting body (801). The two fixing feet (802) are respectively fixed to the first flange (102) and the second flange (103) by bolts, and the two fixing feet (802) are in contact with the end faces of the corresponding first flange (102) / second flange (103).

5. The high power coupler solder fixture of claim 4, wherein: At least one of the fixed feet (802) has a waist-shaped hole (8021).

6. The high power coupler solder fixture of claim 4, wherein: The clamping base (4) is disposed on one side of the first flange (102), and the clamping base (4) is fixedly connected to the first flange (102) and the corresponding fixing foot (802) by bolts.

7. The high power coupler solder fixture of claim 1, wherein: The elastic component (6) is any one of a spring washer, a disc spring, or a helical spring.

8. The high-power coupler welding and fixing clamping device according to claim 1, characterized in that: It also includes a second nut (9), one end of the screw (5) is fixed relative to the clamping base (4) by the second nut (9).

9. The high power coupler solder fixture of claim 2, wherein: The clamping base (4) is provided with a central hole for the screw (5) to pass through. The clamping base (4) is also provided with a clamping part (401) for external welding equipment to clamp and a flange part (402) formed by extending radially outward from one end of the clamping part (401) and conforming to the shape of the first flange (102).

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