Vacuum through-wall pipeline of electron accelerator

Abstract

The utility model relates to a vacuum through-wall pipeline of an electron accelerator, which comprises a vacuum pipeline, the vacuum pipeline penetrates through a wall body, and two ends of the vacuum pipeline are respectively connected with an electron beam emitter and a scanning box which are positioned on two sides of the wall body; the electron beam emitter is connected with a wall body through an upper fixing frame, and the scanning box is connected with the wall body through a lower fixing frame; the vacuum pipeline is specifically a compressible corrugated pipe, and the vacuum pipeline is made of ray shielding metal; one end of the vacuum pipeline is detachably connected with the electron beam emitter through an upper lap joint flange, and the other end of the vacuum pipeline is detachably connected with the scanning box through a lower lap joint flange. The structure of the vacuum pipeline and the connection mode of the two ends are improved, when the vacuum pipeline needs to be replaced, the vacuum pipeline can be replaced on the premise that the electron beam emitter and the scanning box are not disassembled, and the workload and the maintenance cost are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to electron accelerator structure, concretely relates to an electron accelerator vacuum wall-penetrating pipeline. BACKGROUND

[0002] The electron accelerator usually has an electron beam emitter and a scanning box, and a vacuum pipeline is arranged between the electron beam emitter and the scanning box. When abnormal discharge occurs in the traditional accelerating tube, the electron beam acceleration and extraction will be disordered, which causes the electron beam spot to deviate from the center and instantaneously burn the vacuum pipeline.

[0003] For the case that the electron beam emitter and the scanning box are respectively on two sides of a wall, the vacuum pipeline needs to be arranged through the wall. The vacuum wall-penetrating pipeline commonly used in the market is connected by a hard pipeline. When the vacuum component is damaged, the electron beam emitter and the scanning box need to be completely disassembled in order to replace the vacuum pipeline, so the maintenance workload is large and the maintenance cost is high. UTILITY MODEL CONTENT

[0004] The utility model aims at:

[0005] The utility model discloses an electron accelerator vacuum wall-penetrating pipeline, which improves the structure of the vacuum pipeline and the connection mode of two ends. When the vacuum pipeline needs to be replaced, the replacement can be realized without disassembling the electron beam emitter and the scanning box, thereby reducing the workload and the maintenance cost.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] An electron accelerator vacuum wall-penetrating pipeline comprises a vacuum pipeline, the vacuum pipeline penetrates a wall, and two ends of the vacuum pipeline are connected with an electron beam emitter and a scanning box located on two sides of the wall; the electron beam emitter is connected with the wall through an upper fixing frame, and the scanning box is connected with the wall through a lower fixing frame; the vacuum pipeline is a compressible bellows, and the material of the vacuum pipeline is a radiation shielding metal; one end of the vacuum pipeline is detachably connected with the electron beam emitter through an upper loose sleeve flange, and the other end of the vacuum pipeline is detachably connected with the scanning box through a lower loose sleeve flange.

[0008] Further, the vacuum pipeline penetrates a through hole on the wall, and the length of the vacuum pipeline is greater than the thickness of the wall.

[0009] Further, the outer diameter of the vacuum pipeline is less than the inner diameter of the through hole on the wall.

[0010] Further, the material of the wall of the vacuum pipeline is lead or lead rubber.

[0011] Further, the electron beam emission end of the electron beam emitter is provided with a first connecting flange, and the upper loop flange is detachably connected with the first connecting flange.

[0012] Further, the electron beam emission end of the electron beam emitter is provided with a first connecting flange, and the upper loop flange is detachably connected with the first connecting flange.

[0013] Further, the distance between the first connecting flange and the second connecting flange is less than the maximum extension length of the vacuum pipeline.

[0014] The electronic accelerator vacuum through-wall pipeline has the advantages that:

[0015] The electronic accelerator vacuum through-wall pipeline has the advantages that: BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Fig. 1 is a structural schematic view of the electronic accelerator vacuum through-wall pipeline of the utility model.

[0017] Figure 2 Fig. 2 is a partial structural schematic view of the structure shown in Fig. 1. Figure 1

[0018] Figure 3 Fig. 3 is a left view of the structure shown in Fig. 1. Figure 1

[0019] Fig. 4 is a partial structural schematic view of the structure shown in Fig. 1.

[0020] 1, electron beam emitter; 2, upper fixed frame; 3, scanning box; 4, lower fixed frame; 5, wall body; 6, vacuum pipeline; 7, upper loop flange; 8, lower loop flange. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below by combining with the drawings and examples.

[0022] Reference Figures 1 to 3 ​​The application relates to an electron accelerator vacuum wall-penetrating pipeline, which comprises a vacuum pipeline 6, the vacuum pipeline 6 penetrates through a wall 5, and the two ends of the vacuum pipeline 6 are connected with an electron beam emitter 1 and a scanning box 3 located on the two sides of the wall 5 respectively; wherein the electron beam emitter 1, the vacuum pipeline 6 and the scanning box 3 are connected with a vacuum system to guarantee the internal vacuum environment; and the electron beam emitter 1 is used for emitting electrons.

[0023] The electron beam emitter 1 is connected with the wall 5 through an upper fixing frame 2, the upper fixing frame 2 is used for fixing the electron beam emitter 1 on the wall 5; and the scanning box 3 is connected with the wall 5 through a lower fixing frame 4, the lower fixing frame 4 is used for fixing the scanning box 3 on the wall 5.

[0024] The vacuum pipeline 6 is a compressible bellows, has the ability of stretching, compressing and bending at a certain angle, and is made of a ray shielding metal, so as to have the ray shielding performance and avoid ray leakage.

[0025] One end of the vacuum pipeline 6 is detachably connected with the electron beam emitter 1 through an upper loose sleeve flange 7, the upper loose sleeve flange 7 is convenient to disassemble and assemble; and the other end of the vacuum pipeline 6 is detachably connected with the scanning box 3 through a lower loose sleeve flange 8, the lower loose sleeve flange 8 is convenient to disassemble and assemble.

[0026] The vacuum pipeline 6 penetrates through a through hole on the wall 5, and the length of the vacuum pipeline 6 is greater than the thickness of the wall 5, so that the vacuum pipeline 6 can completely penetrate through the through hole on the wall 5 and be connected with the electron beam emitter 1 and the scanning box 3.

[0027] The outer diameter of the vacuum pipeline 6 is smaller than the inner diameter of the through hole on the wall 5, so that the vacuum pipeline 6 can be pulled out and replaced and installed conveniently, and meanwhile, the certain angle bending of the vacuum pipeline 6 can be met.

[0028] The material of the wall of the vacuum pipeline 6 is lead or lead rubber, or is stainless steel or other materials with the ray shielding performance, and is used for shielding rays.

[0029] The electron beam emitting end of the electron beam emitter 1 is provided with a first connecting flange, the upper loose sleeve flange 7 is detachably connected with the first connecting flange, the connection is a sealed connection, and the disassembly and assembly are convenient.

[0030] The electron beam entering end of the scanning box 3 is provided with a second connecting flange, the lower loose sleeve flange 8 is detachably connected with the second connecting flange, the connection is a sealed connection, and the disassembly and assembly are convenient.

[0031] The distance between the first connecting flange and the second connecting flange is smaller than the maximum stretching length of the vacuum pipeline 6, so that the upper loose sleeve flange 7 and the lower loose sleeve flange 8 at the two ends of the vacuum pipeline 6 can be butted with the first connecting flange and the second connecting flange.

[0032] The working principle of the utility model is:

[0033] When the electron beam spot emitted by the electron beam emitter 1 deviates from the center, the vacuum pipeline 6 will be instantaneously burnt out, at this time, the vacuum pipeline 6 needs to be replaced.

[0034] The upper loop flange 7 is separated from the first connecting flange, and the lower loop flange 8 is separated from the second connecting flange.

[0035] By designing the vacuum pipeline 6 into a compressible corrugated pipe structure, the vacuum pipeline 6 can freely adjust the size in the left-right, front-back and height directions, change the structure of the original hard pipeline, have certain flexibility and freedom, so that the vacuum pipeline 6 can be adjusted within a certain range (0-100mm in the height direction, 0-20mm in the left-right and front-back directions).

[0036] Therefore, when the vacuum pipeline 6 is replaced, the vacuum components such as the electron beam emitter 1 and the scanning box 3 do not need to be integrally removed, so that the installation and maintenance of the vacuum pipeline 6 are convenient, the installation is simple and convenient, cost is saved.

[0037] The above examples are used to further illustrate the utility model, but the utility model is not limited to these specific embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be understood as being within the protection scope of the utility model.

Claims

1. An electron accelerator vacuum through-wall duct, comprising a vacuum duct (6) penetrating a wall (5) and having two ends connected to an electron beam emitter (1) and a scanning box (3) located on two sides of the wall (5) respectively; the electron beam emitter (1) is connected to the wall (5) through an upper fixing frame (2), and the scanning box (3) is connected to the wall (5) through a lower fixing frame (4); characterized in that: The vacuum pipeline (6) is specifically a compressible bellows, and the material of the vacuum pipeline (6) is a radiation shielding metal; one end of the vacuum pipeline (6) is detachably connected with the electron beam emitter (1) through an upper live sleeve flange (7), and the other end of the vacuum pipeline (6) is detachably connected with the scanning box (3) through a lower live sleeve flange (8). ​ 2. An electron accelerator vacuum flashtrough according to claim 1, characterized in that: The vacuum pipeline (6) passes through a through hole on the wall body (5), and the length of the vacuum pipeline (6) is greater than the thickness of the wall body (5).

3. An electron accelerator vacuum flashtrough according to claim 2, characterized in that: The outer diameter of the vacuum pipeline (6) is less than the inner diameter of the through hole on the wall body (5).

4. An electron accelerator vacuum flashtrough according to claim 3, characterized in that: The material of the wall of the vacuum pipeline (6) is specifically lead or lead rubber.

5. The vacuum through-wall conduit for an electron accelerator of any of claims 1-4, wherein: The electron beam emitting end of the electron beam emitter (1) is provided with a first connecting flange, and the upper live sleeve flange (7) is detachably connected with the first connecting flange.

6. An electron accelerator vacuum flashtrough according to claim 5, characterized in that: The electron beam entering end of the scanning box (3) is provided with a second connecting flange, and the lower live sleeve flange (8) is detachably connected with the second connecting flange.

7. An electron accelerator vacuum flashtrough according to claim 6, characterized in that: The distance between the first connecting flange and the second connecting flange is less than the maximum extension length of the vacuum pipeline (6).

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