Vacuum sealing device for connecting klystron and high-power waveguide output window

Abstract

The utility model discloses a vacuum sealing device for connecting a klystron and a high-power waveguide output window, which comprises an interface assembly, one end of the interface assembly is detachably connected to the output window through a first flange assembly, and the other end of the interface assembly is detachably connected to the klystron through a second flange assembly; the first flange assembly comprises a first square flange plate brazed to the connector assembly and a second square flange plate brazed to the output window, a copper gasket is arranged between the first square flange plate and the second square flange plate, and the first square flange plate and the second square flange plate are fixed through bolts. According to the device, the high vacuum sealing performance after the output window is installed is guaranteed, the output window is convenient to replace, and the repair cost is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical application field of active vacuum devices, and particularly relates to a vacuum sealing device for connecting a klystron and a high-power waveguide output window. Background Technique

[0002] The P-band klystron is generally used as a high-frequency power source for many large scientific devices in the scientific community, such as CEPC. At present, the development of klystrons in recent years has tended towards high power and high efficiency. Therefore, the high-power ceramic output window has become a bottleneck for the klystron to increase power. In the process of use, the ceramic output window often fails first. At present, in domestic and foreign P-band klystrons, in order to ensure the airtightness of high vacuum, the installation method of the ceramic output window generally adopts argon arc welding or brazing. However, the ceramic output window is extremely easy to damage during the use of the klystron. Once it fails, the replacement cost is extremely high, and even the entire klystron may be scrapped, and the klystron is expensive. Content of the Utility Model

[0003] To solve the above technical problems, the utility model provides a vacuum sealing device for connecting a klystron and a high-power waveguide output window. This device not only ensures the high-vacuum tightness after the output window is installed, but also makes the output window easy to replace, greatly reducing the repair cost.

[0004] The technical solution of the utility model is: a vacuum sealing device for connecting a klystron and a high-power waveguide output window, including an interface component. One end of the interface component is detachably connected to the output window through a first flange component, and the other end of the interface component is detachably connected to the klystron through a second flange component;

[0005] The first flange component includes a square flange plate one brazed to the interface component and a square flange plate two brazed to the output window. A copper gasket is arranged between the square flange plate one and the square flange plate two, and the square flange plate one and the square flange plate two are fixed by bolts.

[0006] Further, the structure of the first flange component is the same as that of the second flange component; the structures of the square flange plate one and the square flange plate two are the same.

[0007] Further, the square flange plate one is of a middle-opening structure. Two horizontal grooves are symmetrically arranged on the opposite sides of the opening, and two vertical grooves are symmetrically arranged on the other opposite sides of the opening. The vertical grooves are communicated with the horizontal grooves.

[0008] Further, the length of the horizontal groove is equal to the length of the square flange plate one, the length of the vertical groove is equal to the height of the square flange plate one, and the horizontal groove and the vertical groove are arranged in a cross shape.

[0009] Further, an annular groove is provided on the periphery of the opening, and bumps are provided between the annular groove, the horizontal groove and the vertical groove.

[0010] Further, the upper end surface of the bump is in the same plane as the surface of the first square flange plate.

[0011] Further, a plurality of bolt holes are provided in the circumferential direction of the first square flange plate.

[0012] Further, the interface component is a square tube with a hollow internal structure. Two small circular flanges are provided on one side of the square tube, and the two small circular flanges are connected to an ion pump for detecting the vacuum degree in the pipeline.

[0013] On the other side of the square tube, two large circular flanges are provided, and the two large circular flanges are connected to a titanium pump for maintaining the vacuum in the pipeline.

[0014] Further, cooling copper tubes are provided on the surfaces of the two large circular flanges.

[0015] Further, reinforcing ribs are provided at the upper and lower ends of the square tube.

[0016] The beneficial technical effects of the present utility model are as follows:

[0017] 1. The klystron or the output window can be separately disassembled through the first flange assembly and the second flange assembly. When the output window is damaged, only the output window can be replaced alone without replacing the entire klystron, which greatly reduces the repair cost.

[0018] 2. The copper gasket is placed in the grooves of the horizontal groove and the vertical groove, and the sealing performance between the first flange plate and the second flange plate is improved through the copper gasket.

[0019] 3. With the setting of the bumps between the annular groove, the horizontal groove and the vertical groove, after the first flange plate and the second flange plate are sealed, the bumps are pressed into the copper gasket, further improving the sealing performance.

[0020] 4. The setting of the reinforcing ribs not only increases the strength of the square tube, but also plays a certain role in heat dissipation.

[0021] 5. The lengths of the horizontal groove and the horizontal groove are respectively the same as the length or width of the flange plate, which is convenient for personnel to perform helium leak detection on the sealed part.

[0022] 6. The setting of the two small circular flanges and the two large circular flanges is for evacuating the square tube and detecting the vacuum in the square tube.

[0023] The above description is only an overview of the technical solution of the present utility model. In order to understand the technical means of the present utility model more clearly and implement it according to the content of the description, the following is a detailed description of the preferred embodiment of the present utility model in conjunction with the accompanying drawings. Description of the Drawings

[0024] Figure 1 This is a schematic diagram of the overall structure of the present utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the second flange plate of the present utility model in cooperation with the copper gasket;

[0026] Figure 3 This is a schematic diagram of the second flange plate of the present utility model;

[0027] Figure 4 This is the Figure 3 enlarged view A in the present utility model;

[0028] Figure 5 This is a schematic diagram of the interface component of the present utility model.

[0029] The reference numerals are as follows:

[0030] 100, output window; 200, interface component; 210, square tube; 211, reinforcing rib; 212, small circular flange; 213, large circular flange; 2131, copper tube; 300, first flange assembly; 310, second flange plate; 311, bolt hole; 312, horizontal groove; 313, vertical groove; 314, annular groove; 315, convex block; 320, copper gasket; 330, first flange plate. Detailed implementation manners

[0031] In order to be able to more clearly understand the technical means of the present utility model and implement it in accordance with the content of the specification, the following combines the drawings and embodiments to further describe in detail the detailed implementation manners of the present utility model. The following embodiments are used to illustrate the present utility model but are not used to limit the scope of the present utility model.

[0032] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and do not have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to implement the embodiments of the present application described herein.

[0033] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship recorded in the embodiments and shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0034] As Figures 1 - 5 shown, the utility model specifically relates to a vacuum sealing device for connecting a klystron to a high-power waveguide output window 100, including an interface component 200. One end of the interface component 200 is detachably connected to the output window 100 through a first flange component 300, and the other end of the interface component 200 is detachably connected to the klystron through a second flange component;

[0035] The first flange component 300 includes a square flange plate one 330 brazed to the interface component 200 and a square flange plate two 310 brazed to the output window 100. A copper gasket 320 is provided between the square flange plate one 330 and the square flange plate two 310, and the square flange plate one 330 and the square flange plate two 310 are fixed by bolts.

[0036] It should be noted that currently, in order to ensure the airtightness of high vacuum, the installation method of the ceramic output window 100 in domestic and foreign P-band klystrons generally adopts argon arc welding or brazing. However, the ceramic output window 100 is extremely easy to be damaged during the use of the klystron, and once it fails, the replacement cost is extremely high.

[0037] In this embodiment, an interface component 200 is added between the klystron and the output window 100. The interface component 200 is respectively connected to the output window 100 and the klystron through a first flange component 300 and a second flange component. In this way, the output window 100 and the klystron are detachably connected. When one of them is damaged, only the damaged one needs to be replaced, greatly reducing the repair cost.

[0038] One end of the interface component 200 is provided with a flange plate one 330, and one end of the output window 100 is provided with a flange plate two 310. The interface component 200 and the output window 100 are connected and fixed through the flange plate one 330 and the flange plate two 310, and there is a copper gasket 320 between the flange plate one 330 and the flange plate two 310. When the flange plate one 330 and the flange plate two 310 are fixed by bolts, by extruding the copper gasket 320 and utilizing the ductility of copper, seamless gaps on the inner surface of the waveguide are ensured while achieving sealing, reducing transmission loss.

[0039] The structure of the first flange component 300 is the same as that of the second flange plate component; the structures of the square flange plate one 330 and the square flange plate two 310 are the same.

[0040] The square flange plate one 330 is of a middle-open structure. Two horizontal grooves 312 are symmetrically provided on the opposite sides of the opening, and two vertical grooves 313 are symmetrically provided on the other opposite sides of the opening. The vertical grooves 313 are communicated with the horizontal grooves 312.

[0041] Among them, the copper washer 320 is placed in the grooves of the horizontal groove 312 and the vertical groove 313, which facilitates the positioning of the copper washer 320 and avoids the position deviation of the copper washer 320 during the extrusion process, resulting in poor sealing.

[0042] The length of the horizontal groove 312 is equal to the length of the first square flange plate 330, the length of the vertical groove 313 is equal to the height of the first square flange plate 330, and the horizontal groove 312 and the vertical groove 313 are arranged in a cross shape.

[0043] By arranging the horizontal groove 312 and the vertical groove 313 in a cross shape, when the copper washer 320 is placed in the grooves of the horizontal groove 312 and the vertical groove 313, the outer side of the copper washer 320 is also provided with the horizontal groove 312 and the vertical groove 313 extending outside the flange plate 330. When the sealing is completed, the helium leak detection is carried out through the extended horizontal groove 312 and vertical groove 313 to test the vacuum condition of the sealed part.

[0044] An annular groove 314 is provided on the periphery of the opening. A convex block 315 is provided between the annular groove 314, the horizontal groove 312 and the vertical groove 313. The upper end surface of the convex block 315 is in the same plane as the surface of the first square flange plate 330.

[0045] The convex block 315 is arranged between the annular groove 314, the horizontal groove 312 and the vertical groove 313. After the first flange plate 330 and the second flange plate 310 are sealed, a little deformation amount is reserved for the copper washer 320, and it is pressed into the copper washer 320 through the convex block 315, further improving the sealing performance.

[0046] A plurality of bolt holes 311 are provided on the circumference of the first square flange plate 330. The first flange plate 330 and the second flange plate 310 are fastened by a plurality of bolts to improve the sealing performance.

[0047] The interface component 200 is a square tube 210 with a hollow internal structure. Two small circular flanges 212 are provided on one side of the square tube 210. The two small circular flanges 212 are connected to the ion pump for detecting the vacuum degree in the pipeline;

[0048] Two large circular flanges 213 are provided on the other side of the square tube 210. The two large circular flanges 213 are connected to the titanium pump for maintaining the vacuum in the pipeline.

[0049] Cooling copper tubes 2131 are provided on the surfaces of the two large circular flanges 213. A large amount of heat will be generated during the working process, and the cooling copper tubes 2131 play a role in heat dissipation.

[0050] Reinforcing ribs 211 are provided at the upper and lower ends of the square tube 210. The arrangement of the reinforcing ribs 211 not only increases the strength of the square tube 210, but also plays a certain role in heat dissipation.

[0051] The above embodiments are only specific implementation manners of the present utility model, used to illustrate the technical solutions of the present utility model, rather than limiting it. The protection scope of the present utility model is not limited thereto. Although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: any person skilled in the art within the technical scope disclosed by the present utility model can still modify the technical solutions recorded in the foregoing embodiments or can easily think of changes, or perform equivalent replacements on some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model, and should all be covered within the protection scope of the present utility model.

Claims

1. A vacuum sealing device for connecting a klystron with a high-power waveguide output window, characterized in that: It comprises an interface assembly, one end of which is detachably connected to the output window via a first flange assembly, and the other end of which is detachably connected to the klystron via a second flange assembly; The first flange assembly includes a square flange plate 1 brazed to the interface assembly and a square flange plate 2 brazed to the output window. A copper gasket is provided between the square flange plate 1 and the square flange plate 2, and the square flange plate 1 and the square flange plate 2 are fixed by bolts.

2. The vacuum sealing device for connecting a klystron with a high-power waveguide output window according to claim 1, characterized in that: The structure of the first flange assembly is the same as that of the second flange plate assembly; the structure of the square flange plate 1 is the same as that of the square flange plate 2.

3. The vacuum sealing device for connecting a klystron with a high-power waveguide output window according to claim 2, characterized in that: The square flange plate 1 is a middle opening structure, two horizontal grooves are symmetrically arranged on two opposite sides of the opening, and two vertical grooves are symmetrically arranged on the other two opposite sides of the opening, and the vertical grooves are connected with the horizontal grooves.

4. The vacuum sealing device for connecting a klystron with a high-power waveguide output window according to claim 3, characterized in that: The length of the transverse groove is equal to the length of the square flange plate 1, the length of the vertical groove is equal to the height of the square flange plate 1, and the transverse groove and the vertical groove are arranged crosswise.

5. The vacuum sealing device for connecting a klystron with a high-power waveguide output window according to claim 4, characterized in that: An annular groove is arranged on the periphery of the opening, and a convex block is arranged between the annular groove and the horizontal groove and the vertical groove.

6. The vacuum sealing device for connecting a klystron with a high-power waveguide output window according to claim 5, characterized in that: The upper end surface of the protrusion is in the same plane as the surface of the square flange plate.

7. The vacuum sealing device for connecting a klystron with a high-power waveguide output window according to claim 1, characterized in that: A plurality of bolt holes are arranged in the circumference of the square flange plate 1.

8. The vacuum sealing device for connecting a klystron with a high-power waveguide output window according to claim 1, characterized in that: The interface component is a square tube with a hollow structure inside, and two small circular flanges are provided on one side of the square tube. The two small circular flanges are connected to the ion pump and are used to detect the vacuum degree in the pipeline; Two large circular flanges are provided on the other side of the square tube, and the two large circular flanges are connected to a titanium pump for maintaining the vacuum in the pipeline.

9. The vacuum sealing device for connecting a klystron with a high-power waveguide output window according to claim 8, characterized in that: Cooling copper pipes are arranged on the surfaces of the two large circular flanges.

10. The vacuum sealing device for connecting a klystron with a high-power waveguide output window according to claim 9, characterized in that: Reinforcing ribs are arranged at the upper and lower ends of the square tube.

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