X-ray tube with detachable electron gun

Abstract

The utility model relates to an X-ray tube with a detachable electron gun, and belongs to the technical field of X-ray tube manufacturing. Comprising an insulating shell, an inner cavity of the insulating shell is arranged in a vertically-arranged anode assembly, a horizontally-arranged fixing cylinder is arranged on the side face of the top of the insulating shell, an inner cavity of the fixing cylinder is communicated with the inner cavity of the insulating shell, an electronic gun is arranged in the inner cavity of the fixing cylinder, and an electronic gun flange is arranged on the outer end face of the electronic gun. A fixed cylinder flange is arranged on the outer end face of the fixed cylinder, the fixed cylinder flange and the electron gun flange are oppositely arranged, a sealing washer is arranged between the fixed cylinder flange and the electron gun flange, and the fixed cylinder flange and the electron gun flange are fixedly connected through a fixing piece, so that the fixed cylinder is in sealed connection with the electron gun assembly. The fixed cylinder flange and the electron gun flange are both CF flanges. The electronic gun is convenient to operate and convenient to replace and maintain, scrap of the electronic gun caused by unqualified welding quality is reduced, and the production cost is reduced.

Description

A detachable X-ray tube for electron guns Technical Field

[0001] This utility model relates to a detachable electron gun X-ray tube, belonging to the field of X-ray tube manufacturing technology. Background Technology

[0002] The X-ray tube is the core device for generating X-rays, and its main structure consists of a cathode assembly, an anode assembly, and an insulating shell. The cathode assembly is formed by welding an electron gun and a fixing cylinder using argon arc welding or laser welding. The quality of the argon arc welding or laser welding directly affects the final vacuum level and product performance. Welding leaks can lead to product scrap, and the high cost of electron guns results in material and economic waste, increasing production costs. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a detachable X-ray tube with an electron gun, which is in contrast to the above-mentioned prior art. The electron gun is detachable, which facilitates replacement and maintenance, reduces scrap due to welding quality problems, and lowers production costs.

[0004] The technical solution adopted by this utility model to solve the above problems is as follows: a detachable electron gun X-ray tube, including an insulating shell, an anode assembly arranged vertically in the inner cavity of the insulating shell, a horizontally arranged fixing cylinder in the top side of the insulating shell, the inner cavity of the fixing cylinder communicating with the inner cavity of the insulating shell, an electron gun in the inner cavity of the fixing cylinder, an electron gun flange in the outer end face of the electron gun, a fixing cylinder flange in the outer end face of the fixing cylinder, the fixing cylinder flange and the electron gun flange being arranged opposite to each other, a sealing gasket being provided between the fixing cylinder flange and the electron gun flange, and the fixing cylinder flange and the electron gun flange being fixedly connected by a fastener to achieve a sealed connection between the fixing cylinder and the electron gun assembly.

[0005] The fastener is a split-type clamp, which is located on the outer periphery of the fixed cylinder flange and the electron gun flange. The split-type clamp is fixedly connected to the fixed cylinder flange and the electron gun flange by locking bolts and nuts.

[0006] The inner surface of the split clamp has a groove, the width of which is the sum of the widths of the fixed cylinder flange and the electron gun flange.

[0007] Both the fixed cylinder flange and the electron gun flange are CF flanges.

[0008] Compared with the prior art, the advantages of this utility model are: a detachable X-ray tube for electron gun, which is easy to manufacture; the electron gun and the two CF flanges on the fixed cylinder are fixedly connected by a split clamp; the two CF flanges squeeze the sealing gasket to achieve the same vacuum sealing effect as welding; it is not only easy to operate, replace and maintain, but also reduces the scrap of electron guns caused by substandard welding quality and reduces production costs. Attached Figure Description

[0009] Figure 1 is a schematic diagram of a detachable X-ray tube for an electron gun according to an embodiment of the present invention;

[0010] Figure 2 is a cross-sectional view AA of Figure 1;

[0011] In the diagram: 1 Electron gun, 2 Electron gun flange, 3 Fixed cylinder, 4 Fixed cylinder flange, 5 Sealing gasket, 6 Split clamp, 7 Insulating shell, 8 Anode assembly, 9 Locking bolt, 10 Nut. Detailed Implementation

[0012] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0013] As shown in Figures 1 and 2, a detachable X-ray tube with an electron gun in this embodiment includes an insulating shell 7. The inner cavity of the insulating shell 7 has a vertically arranged anode assembly 8. A horizontally arranged fixing cylinder 3 is located on the top side of the insulating shell 7, and its inner cavity communicates with the inner cavity of the insulating shell 7. The inner cavity of the fixing cylinder 3 houses a horizontally arranged electron gun 1. The outer end face of the electron gun 1 is fixedly connected to an electron gun flange 2 by brazing, and the outer end of the fixing cylinder 3 is connected to a fixing cylinder flange 4 by brazing. The fixing cylinder flange 4 and the electron gun flange 2 are arranged opposite to each other, and a sealing gasket 5 is provided at the contact point between the fixing cylinder flange 4 and the electron gun flange 2. Split-type clamps 6 are provided on the outer periphery of the fixing cylinder flange 4 and the electron gun flange 2. The split-type clamps 6 are fixedly connected to the fixing cylinder flange 4 and the electron gun flange 2 by locking bolts 9 and nuts 10, achieving a fixed connection between the fixing cylinder 3 and the electron gun 1. The fixing cylinder flange and the electron gun flange compress the sealing gasket, achieving the same vacuum sealing effect as welding.

[0014] Both the fixed cylinder flange and the electron gun flange are CF flanges.

[0015] The inner surface of the split clamp has grooves, and the fixed cylinder flange and the electron gun flange are located in the grooves. The width of the grooves is the sum of the widths of the fixed cylinder flange and the electron gun flange, so that the fixed cylinder flange and the electron gun flange fit tightly together.

[0016] The fixed cylinder flange and electron gun flange are connected by a split clamp, facilitating the assembly and disassembly of the electron gun. If any component in the electron gun, insulating housing, or anode assembly has a quality problem, the split clamp can be removed, the corresponding component replaced, and then the vacuum can be re-evacuated. This application is easy to manufacture; the electron gun and the two CF flanges on the fixed cylinder are fixedly connected by a split clamp. The two CF flanges compress the sealing gasket, achieving the same vacuum sealing effect as welding. This not only makes operation convenient, facilitating replacement and maintenance, but also reduces the scrap of electron guns due to substandard welding quality, thus lowering production costs.

[0017] In addition to the above embodiments, this utility model also includes other implementation methods. All technical solutions formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of this utility model.

Claims

1. A detachable x-ray tube with an electron gun, characterized in that: The device includes an insulating shell, an inner cavity of which is located within a vertically arranged anode assembly, and a horizontally arranged fixing cylinder on the top side of the insulating shell. The inner cavity of the fixing cylinder communicates with the inner cavity of the insulating shell, and an electron gun is housed within the inner cavity of the fixing cylinder. An electron gun flange is provided on the outer end face of the electron gun, and a fixing cylinder flange is provided on the outer end face of the fixing cylinder. The fixing cylinder flange and the electron gun flange are arranged opposite to each other, and a sealing gasket is provided between the fixing cylinder flange and the electron gun flange. The fixing cylinder flange and the electron gun flange are fixedly connected by fasteners to achieve a sealed connection between the fixing cylinder and the electron gun assembly.

2. The detachable X-ray tube for an electron gun according to claim 1, characterized in that: The fastener is a split-type clamp, which is located on the outer periphery of the fixed cylinder flange and the electron gun flange. The split-type clamp is fixedly connected to the fixed cylinder flange and the electron gun flange by locking bolts and nuts.

3. The detachable x-ray tube with an electron gun according to claim 2, characterized in that: The inner surface of the split clamp has a groove, the width of which is the sum of the widths of the fixed cylinder flange and the electron gun flange.

4. The detachable x-ray tube with an electron gun according to claim 1, characterized in that: Both the fixed cylinder flange and the electron gun flange are CF flanges.

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