A beam transformer assembly structure for electron accelerator

Abstract

The invention discloses an assembly structure of a beam transformer for an electron accelerator, which relates to the technical field of transformers, and includes a first flange, a second flange, a magnetic ring coil, a kovar ring and an electrical connector. The first flange is arranged at the upper end of the second flange, the first flange is provided with a first center hole, the second flange is provided with a second center hole, the first center hole is directly opposite to the second center hole, a mounting groove is arranged between the first flange and the second flange, the magnetic ring coil is arranged in the mounting groove, the kovar ring is arranged on the inner peripheral wall of the first center hole and the second center hole, the outer edges of the first flange and the second flange are provided with two mounting surfaces, each mounting surface is respectively provided with an electrical connector, and each electrical connector is respectively electrically connected to the magnetic ring coil. The transformer as a whole can be freely disassembled and assembled, has a stable structure, is easy to clean, will not cause the phenomenon of sparks caused by the bombardment of high-speed and high-energy electron flow inside the beam transformer, and can improve the service life of the transformer.

Description

Technical Field

[0001] The invention relates to the technical field of transformers, and in particular to an assembly structure of a beam transformer for an electron accelerator. Background Art

[0002] The beam transformer is installed in the beam output section of the linear electron accelerator to measure the intensity of the beam. Since the energy of the electron flow is high during the accelerator beam output, and the inner hole of the ceramic Kovar ring of the beam transformer is also in a vacuum environment, if the cleaning process of the beam transformer is not reasonable during the manufacturing process, the internal part of the beam transformer will be bombarded by high-speed and high-energy electron flow and sparks will be generated, which will cause the accelerator vacuum to deteriorate and cause unstable beam output, and will also greatly reduce the life of the beam transformer. Summary of the invention

[0003] The object of the present invention is to provide a beam transformer assembly structure for an electron accelerator, so as to solve the above technical problems.

[0004] The technical solution adopted by the present invention is as follows:

[0005] A beam transformer assembly structure for an electron accelerator comprises a first flange, a second flange, a magnetic ring coil, a kovar ring and an electrical connector, wherein the first flange is arranged at the upper end of the second flange, the first flange is provided with a first center hole, the second flange is provided with a second center hole, the first center hole is directly opposite to the second center hole, a mounting groove is arranged between the first flange and the second flange, the magnetic ring coil is arranged in the mounting groove, the kovar ring is arranged on the inner peripheral wall of the first center hole and the second center hole, the outer edges of the first flange and the second flange are provided with two mounting surfaces, each of the mounting surfaces is provided with an electrical connector, and each of the electrical connectors is electrically connected to the magnetic ring coil.

[0006] Preferably, it further comprises a first ceramic ring, which is welded on the inner wall of the first center hole, and the inner circumferential wall on the lower side of the first ceramic ring abuts against the upper side of the outer circumferential wall of the kovar ring.

[0007] As a further preference, it also includes a second ceramic ring, which is welded on the inner wall of the second center hole, the inner circumferential wall of the upper side of the second ceramic ring abuts against the lower side of the outer circumferential wall of the kovar ring, and the first ceramic ring is directly opposite to the second ceramic ring.

[0008] Preferably, screws are further included, and a plurality of countersunk holes are provided at the upper end of the first flange, and a screw is respectively provided in each of the countersunk holes, and the first flange is connected to the second flange via the plurality of screws.

[0009] As a further preference, each of the screws is a hexagonal cylindrical head screw.

[0010] Preferably, it also includes a welding copper seat, which is arranged in the first center hole and the second center hole, and the inner wall of the first ceramic ring, the inner wall of the second ceramic ring and the inner wall of the kovar ring are respectively against the outer peripheral wall of the welding copper seat.

[0011] As a further preference, a limiting ring is provided on the outer edge of the upper end of the welding copper seat, and the lower surface of the limiting ring abuts against the upper surface of the first flange.

[0012] Preferably, the kovar ring is a ceramic kovar ring.

[0013] The above technical solution has the following advantages or beneficial effects:

[0014] In the present invention, the transformer as a whole can be freely disassembled and assembled, has a stable structure, is easy to clean, and will not cause the internal part of the beam transformer to be bombarded by high-speed and high-energy electron flow to spark, thereby increasing the service life of the transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the assembly structure of the beam transformer assembly structure for an electron accelerator of the present invention.

[0016] Figure 2 The present invention is a schematic diagram of the heat conduction welding assembly of the beam transformer assembly structure for an electron accelerator.

[0017] In the figure: 1. first flange; 2. second flange; 3. magnetic ring coil; 4. kover ring; 5. electrical connector; 6. mounting groove; 7. mounting surface; 8. first ceramic ring; 9. second ceramic ring; 10. screw; 11. welding copper seat; 12. limit ring. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if the terms "first", "second", "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] A beam transformer assembly structure for an electron accelerator comprises a first flange 1, a second flange 2, a magnetic ring coil 3, a kovar ring 4 and an electric connector 5. The first flange 1 is arranged at the upper end of the second flange 2. The first flange 1 is provided with a first center hole. The second flange 2 is provided with a second center hole. The first center hole is directly opposite to the second center hole. A mounting groove 6 is arranged between the first flange 1 and the second flange 2. The magnetic ring coil 3 is arranged in the mounting groove 6. The kovar ring 4 is arranged on the inner peripheral wall of the first center hole and the second center hole. Two mounting surfaces 7 are arranged on the outer edges of the first flange 1 and the second flange 2. An electric connector 5 is respectively arranged on each mounting surface 7. Each electric connector 5 is respectively electrically connected to the magnetic ring coil 3. In the present invention, the mounting groove 6 is annular, the magnetic ring coil 3 is detachably connected to the mounting groove 6, the shape of the first flange 1 is the same as the shape of the second flange 2, the first flange 1 and the second flange 2 are both CF63 flanges, the Kovar ring 4 is made of ceramic material, and the Kovar ring 4 is welded to the first flange 1 and the second flange 2, and the welding gap is between 0.05-0.15mm. Argon arc welding is used for welding, and the weld is wiped with acetone before welding, and then welding is performed after volatilization and drying.

[0022] Furthermore, as a preferred embodiment, the beam transformer assembly structure for the electron accelerator also includes a first ceramic ring 8, which is welded on the inner wall of the first center hole, and the inner circumferential wall of the lower side of the first ceramic ring 8 abuts against the upper side of the outer circumferential wall of the Kovar ring 4.

[0023] Furthermore, as a preferred embodiment, the beam transformer assembly structure for the electron accelerator also includes a second ceramic ring 9, which is welded on the inner wall of the second center hole, and the inner circumferential wall of the upper side of the second ceramic ring 9 abuts against the lower side of the outer circumferential wall of the Kovar ring 4, and the first ceramic ring 8 is directly opposite to the second ceramic ring 9.

[0024] Furthermore, as a preferred embodiment, the assembly structure of the beam transformer for an electron accelerator also includes screws 10 . A plurality of countersunk holes are provided at the upper end of the first flange 1 . A screw 10 is provided in each countersunk hole. The first flange 1 is connected to the second flange 2 via the plurality of screws 10 .

[0025] Furthermore, as a preferred embodiment, each screw 10 is a hexagonal cylindrical head screw.

[0026] Further, as a preferred embodiment, it also includes a welding copper seat 11, which is arranged in the first center hole and the second center hole, and the inner wall of the first ceramic ring 8, the inner wall of the second ceramic ring 9 and the inner wall of the kovar ring 4 are respectively against the outer peripheral wall of the welding copper seat 11. In this embodiment, the welding copper seat 11 is made of copper material, and the welding copper seat 11 is used to absorb the heat at the weld during welding, avoid heat concentration, and ensure welding sealing. At the same time, the copper can protect the knife-edge flanges on the first flange 1 and the second flange 2 from being damaged during welding.

[0027] Furthermore, as a preferred embodiment, a limiting ring 12 is provided on the outer edge of the upper end of the welding copper seat 11 , and the lower surface of the limiting ring 12 abuts against the upper surface of the first flange 1 .

[0028] Further, as a preferred embodiment, the kover ring 4 is a ceramic kover ring.

[0029] The working principle of the present invention is as follows:

[0030] During assembly, first install the magnetic ring coil 3 in the installation groove 6, and then connect the wire pins of the electrical connector 5 with the wire pins of the magnetic ring coil 3; after the connection is completed, install the kovar ring 4, and align the second flange 2 with the installed part, and finally use the screws 10 to assemble and fix the first flange 1 and the second flange 2, and use the welding copper seat 11 to limit the position of the assembled and fixed components; after the welding copper seat 11 is installed, after the circular end face weld of the kovar ring 4 is aligned with the weld of the first flange 1 and the weld of the second flange 2, the end face of the welding copper seat 11 is 3-4mm lower than the aligned weld, and at this time, the welds of the first flange 1, the second flange 2 and the kovar ring 4 opposite to the transformer are automatically aligned by the limit ring 12 on the welding copper seat 11; when one side of the welding is completed, the welding copper seat 11 can be turned over to the other side for protective welding. After welding is completed, use a clean non-woven cloth dipped in an appropriate amount of anhydrous ethanol or acetone to wipe off the weld marks at the weld. It is strictly forbidden to use acid, alkali, and water-containing solvents for cleaning. The weld finish reaches 0.8um and the weld leakage rate is better than 1×10-11pa·m3 / s. After the treatment is completed, the CF flange plastic protective shell is installed on the knife-edge flanges on both sides of the first flange 1 and the second flange 2, and then placed in a special container filled with dry nitrogen for storage.

[0031] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A beam transformer assembly structure for an electron accelerator, characterized in that: The invention comprises a first flange, a second flange, a magnetic ring coil, a kovar ring and an electrical connector, wherein the first flange is arranged at the upper end of the second flange, the first flange is provided with a first center hole, the second flange is provided with a second center hole, the first center hole is directly opposite to the second center hole, a mounting groove is arranged between the first flange and the second flange, the magnetic ring coil is arranged in the mounting groove, the kovar ring is arranged on the inner peripheral wall of the first center hole and the second center hole, the outer edges of the first flange and the second flange are provided with two mounting surfaces, each of the mounting surfaces is provided with an electrical connector, and each of the electrical connectors is electrically connected to the magnetic ring coil respectively; It also includes a first ceramic ring, the first ceramic ring is welded on the inner wall of the first center hole, and the inner peripheral wall of the lower side of the first ceramic ring abuts against the upper side of the outer peripheral wall of the Kovar ring; It also includes a second ceramic ring, the second ceramic ring is welded on the inner wall of the second center hole, the inner peripheral wall of the upper side of the second ceramic ring abuts against the lower side of the outer peripheral wall of the Kovar ring, and the first ceramic ring and the second ceramic ring are directly opposite; It also includes a welding copper seat, which is arranged in the first center hole and the second center hole, and the inner wall of the first ceramic ring, the inner wall of the second ceramic ring and the inner wall of the kovar ring are respectively against the outer peripheral wall of the welding copper seat, and a limiting ring is provided on the outer edge of the upper end of the welding copper seat, and the lower surface of the limiting ring is against the upper surface of the first flange. When assembling, the magnetic ring coil is first installed in the installation groove, and then the pins of the electrical connector are connected to the pins of the magnetic ring coil; After the connection is completed, the kovable ring is installed, and the second flange is matched with the installed part. Finally, the first flange and the second flange are assembled and fixed with screws, and the assembled and fixed components are limited by the welding copper seat. After the welding copper seat is installed, after the circular end face weld of the kovable ring is aligned with the weld of the first flange and the weld of the second flange, the end face of the welding copper seat is 3-4mm lower than the aligned weld. At this time, the welds of the first flange, the second flange and the kovable ring opposite to the transformer are automatically aligned by the limiting ring on the welding copper seat.

2. The assembly structure of the beam transformer for electron accelerator according to claim 1, characterized in that: It also includes screws. The upper end of the first flange is provided with a plurality of countersunk holes, each of the countersunk holes is provided with a screw, and the first flange is connected to the second flange through the plurality of screws.

3. The assembly structure of the beam transformer for electron accelerator according to claim 2, characterized in that: Each of the screws is a hexagonal cylindrical head screw.

4. The assembly structure of the beam transformer for electron accelerator according to claim 1, characterized in that: The kovable ring is a ceramic kovable ring.

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