X-ray tube with adjustable anode assembly

Abstract

The utility model relates to an X-ray tube with an adjustable anode assembly, and belongs to the technical field of X-ray tube manufacturing. Comprising a cathode shell and an anode shell, the cathode shell is arranged at the top of the anode shell, an inner cavity of the anode shell is communicated with an inner cavity of the cathode shell, and a cathode assembly penetrates through the side face of the cathode shell; an anode assembly is arranged in the anode shell in a penetrating manner, and the anode assembly is partially arranged in an inner cavity of the cathode shell, so that the emitting part of the cathode assembly corresponds to the receiving part of the anode assembly; the bottom of the anode assembly is covered with an anode cover plate, the anode assembly is sleeved with a corrugated pipe, and the anode assembly is fixedly connected with the anode cover plate through the corrugated pipe; an adjusting shaft sleeve penetrates through the center of the anode cover plate, one end of the adjusting shaft sleeve is arranged between the inner wall of the corrugated pipe and the outer wall of the anode assembly, and the adjusting shaft sleeve is in threaded connection with the anode assembly. The X-ray source is simple in structure and convenient to operate, the electron beam bombarded area of the anode target surface can be finely adjusted, and the service life of the X-ray source is prolonged.

Description

An X-ray tube with an adjustable anode assembly Technical Field

[0001] This utility model relates to an X-ray tube with an adjustable anode assembly, belonging to the field of X-ray tube manufacturing technology. Background Technology

[0002] An X-ray tube is a high-voltage, high-vacuum electronic device, typically comprising a cathode assembly as the electron emission source, an anode assembly for generating X-rays and dissipating heat, and a tube shell for sealing the vacuum and providing insulation. Accelerated by an electric field ranging from tens to hundreds of kilovolts, the electron beam emitted by the electron emission source bombards the anode target of the anode assembly, producing X-rays.

[0003] However, prolonged and continuous bombardment of the anode target by the electron beam can easily lead to localized overheating of the anode target surface, causing the X-ray source to become unusable and severely limiting the service life of the micro-focal X-ray source. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide an X-ray tube with an adjustable anode assembly that is easy to operate, can change the area of ​​the anode target surface bombarded by the electron beam, and improve the service life of the X-ray source.

[0005] The technical solution adopted by this utility model to solve the above problems is as follows: an X-ray tube with an adjustable anode assembly, including a cathode shell and an anode shell. The cathode shell is disposed on top of the anode shell, and the inner cavity of the anode shell communicates with the inner cavity of the cathode shell. A horizontally arranged cathode assembly passes through the side of the cathode shell. A vertically arranged anode assembly passes through the anode shell, with a portion of the anode assembly located within the inner cavity of the cathode shell, such that the emitting part of the cathode assembly corresponds to the receiving part of the anode assembly. An anode cover plate is provided at the bottom of the anode assembly, and a corrugated tube is fitted onto the anode assembly. The anode assembly is fixedly connected to the anode cover plate through the corrugated tube, thereby fixing the anode assembly within the inner cavity of the anode shell. An adjusting bushing passes through the center of the anode cover plate. One end of the adjusting bushing is located between the inner wall of the corrugated tube and the outer wall of the anode assembly, and the adjusting bushing is threadedly connected to the anode assembly. The other end of the adjusting bushing protrudes from the anode cover plate. Rotating the adjusting bushing causes the anode assembly to move vertically.

[0006] The adjusting bushing has a T-shaped cross-section, and a stepped hole for the bushing is opened in the center of the anode cover plate. The size of the stepped hole for the bushing matches the size of the adjusting bushing.

[0007] The corrugated pipe is a metal corrugated pipe.

[0008] The anode and cathode housings are made of insulating material.

[0009] Compared with the prior art, the advantages of this utility model are: an X-ray tube with an adjustable anode assembly has a simple structure and is easy to operate. It can finely adjust the position of the anode assembly, thereby changing the area of ​​the anode target surface bombarded by the electron beam and improving the service life of the X-ray source. Attached Figure Description

[0010] Figure 1 is a schematic diagram of an adjustable anode assembly X-ray tube according to an embodiment of the present invention;

[0011] In the figure, 1 is the cathode assembly, 2 is the anode housing, 3 is the anode assembly, 3.1 is the anode target, 4 is the bellows, 5 is the anode cover plate, 6 is the adjusting bushing, and 7 is the cathode housing. 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 Figure 1, an X-ray tube with an adjustable anode assembly in this embodiment includes a cathode housing 7 and an anode housing 2. The cathode housing 7 is disposed on top of the anode housing 2, and the inner cavity of the anode housing 2 communicates with the inner cavity of the cathode housing 7. A horizontally arranged cathode assembly 1 passes through the side of the cathode housing 7. A vertically arranged anode assembly 3 passes through the inner cavity of the anode housing 2, with the top part of the anode assembly 3 located within the inner cavity of the cathode housing, so that the emitting part of the cathode assembly corresponds to the anode target 3.1 at the top of the anode assembly. An anode cover plate 5 is provided at the bottom of the anode housing 2, and a corrugated pipe 4 is fitted onto the anode assembly 3. The anode assembly 3 is fixedly connected to the anode cover plate 5 through the corrugated pipe 4, so that the anode assembly 3 is fixed within the inner cavity of the anode housing 2. An adjusting sleeve 6 passes through the center of the anode cover plate 5. One end of the adjusting sleeve 6 is located between the inner wall of the corrugated pipe and the outer wall of the anode assembly, and the adjusting sleeve 6 is threadedly connected to the anode assembly 3; the other end of the adjusting sleeve protrudes from the anode cover plate. Rotating the adjusting bushing allows the anode assembly to move vertically within the bushing, thereby fine-tuning its position. This enables the electron beam bombardment area to be adjusted on the anode target surface, preventing prolonged bombardment of the same area.

[0014] The adjusting bushing has a T-shaped cross-section, and a stepped hole for the bushing is opened in the center of the anode cover plate. The size of the stepped hole matches the size of the adjusting bushing. On the one hand, the adjusting bushing can rotate within the stepped hole; on the other hand, the stepped hole limits the vertical movement of the adjusting bushing, meaning the adjusting bushing can only rotate and not move.

[0015] The bellows mentioned above is a metal bellows. When the adjusting bushing rotates, the anode assembly moves vertically inside the adjusting bushing, and the applied force is transmitted to the metal bellows, causing it to undergo a slight elastic deformation.

[0016] Both the anode and cathode housings are made of insulating materials.

[0017] This application has a simple structure and is easy to operate. It can finely adjust the position of the anode assembly, thereby changing the area of ​​the anode target surface bombarded by the electron beam and improving the service life of the X-ray source.

[0018] 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. An X-ray tube with an adjustable anode assembly, characterized in that: The device includes a cathode housing and an anode housing. The cathode housing is located on top of the anode housing, and the inner cavity of the anode housing communicates with the inner cavity of the cathode housing. A horizontally arranged cathode assembly is installed on the side of the cathode housing. A vertically arranged anode assembly is installed inside the anode housing, with a portion of the anode assembly located within the inner cavity of the cathode housing, such that the emitting part of the cathode assembly corresponds to the receiving part of the anode assembly. An anode cover plate is installed at the bottom of the anode assembly, and a corrugated tube is fitted onto the anode assembly. The anode assembly is fixedly connected to the anode cover plate through the corrugated tube, thus fixing the anode assembly within the inner cavity of the anode housing. An adjusting bushing is installed at the center of the anode cover plate. One end of the adjusting bushing is located between the inner wall of the corrugated tube and the outer wall of the anode assembly, and the adjusting bushing is threadedly connected to the anode assembly. The other end of the adjusting bushing protrudes from the anode cover plate. Rotating the adjusting bushing causes the anode assembly to move vertically.

2. The X-ray tube with an adjustable anode assembly according to claim 1, characterized in that: The adjusting bushing has a T-shaped cross-section, and a stepped hole for the bushing is opened in the center of the anode cover plate. The size of the stepped hole for the bushing matches the size of the adjusting bushing.

3. The X-ray tube with an adjustable anode assembly according to claim 1, characterized in that: The corrugated pipe is a metal corrugated pipe.

4. The x-ray tube of a tunable anode assembly of claim 1, wherein: The anode and cathode housings are made of insulating material.

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