CN215266184U

CN215266184U - Novel X-ray tube structure capable of controlling focus size

Info

Publication number: CN215266184U
Application number: CN202121589394.0U
Authority: CN
Inventors: 谷胜栋
Original assignee: Corona Medical Devices Shanghai Co ltd
Current assignee: Corona Medical Devices Shanghai Co ltd
Priority date: 2021-07-13
Filing date: 2021-07-13
Publication date: 2021-12-21
Anticipated expiration: 2031-07-13

Abstract

The utility model discloses a novel X-ray tube structure of steerable focus size, including the cathode emission dish, the lower extreme of cathode emission dish is provided with first solenoid, the below that the inboard of first solenoid is located the cathode emission dish is provided with first electron beam envelope. This novel X ray tube structure of steerable focus size, utilize first solenoid and the common cooperation of second solenoid to adjust the focus size, it is two coupled variables together through focus size and angle during the regulation, thereby the angle also can change, for more convenient regulation, the magnetic field that uses first solenoid and second solenoid comes control beam current, direction and size that the accurate control magnetic field change adjusted the electron beam and hit on the target disc have been realized, reach the purpose of quick adjustment focus size and shape, the flexibility of X ray tube focusing point size and directional control has been improved, and have lower manufacturing cost and simpler mounting means, the practicality of X ray tube has been improved.

Description

Novel X-ray tube structure capable of controlling focus size

Technical Field

The utility model relates to an X-ray tube technical field specifically is a novel X-ray tube structure of steerable focus size.

Background

In recent times, the X-ray tube plays a crucial role in understanding the world of human beings, and X-rays become an indispensable tool for human beings in both natural science and medical diagnosis and treatment, and the generation principle of the X-rays is several, and the change of the velocity of charged particles cannot be avoided, wherein, the direct target-shooting by electrons is most economical and rapid to generate X-ray, along with the further development of science, people have higher and higher requirements on the X-ray, and various ways for operating the X-ray are generated, one of them is to control the change of X-ray by operating electron acceleration mode, such as controlling the beam size in the accelerator to control the focus size, therefore, the change of the focus size is realized, and the change of the focus shape is adjusted by adjusting the change of the magnetic field, and the change of the X-ray envelope is adjusted by controlling the distribution of the electron beam current.

The focus of current X-ray tube is adjusted comparatively trouble, and the flexibility is relatively poor, and the quick adjustment of the X-ray tube of being not convenient for uses, and the manufacturing cost who uses is higher in the change that controls X ray through operation electron acceleration mode simultaneously, and the installation is very troublesome, greatly reduced X-ray tube's practicality.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel X ray tube structure of steerable focus size to the focus of solving the current X ray tube that proposes in the above-mentioned background art is adjusted comparatively trouble, and the flexibility is relatively poor, and the quick adjustment of the X ray tube of being not convenient for uses, and the manufacturing cost who uses is higher in the change of controlling X ray through operation electron acceleration mode simultaneously, and the installation is very troublesome, greatly reduced the problem of X ray tube's practicality.

In order to achieve the above object, the utility model provides a following technical scheme: a novel X-ray tube structure capable of controlling focus size comprises a cathode emission disc, wherein a first solenoid is arranged at the lower end of the cathode emission disc, a first electron beam envelope is arranged on the inner side of the first solenoid and located below the cathode emission disc, a first inlet is formed in the left side of the upper end of the first solenoid, a first outlet is formed in the left side of the lower end of the first solenoid, a second electron beam envelope is formed in the lower end of the first electron beam envelope, a second solenoid is arranged on the outer side of the second electron beam envelope, a second inlet is formed in the left side of the upper end of the second solenoid, a second outlet is formed in the left side of the lower end of the second solenoid, an anode target disc is mounted at the lower end of the second electron beam envelope, a first solenoid and a second solenoid are additionally arranged between an electron emitter and the anode target disc, and the focus rotation angle can be controlled by using a first section, different rotation angles are adjusted according to needs, the second section and the third section are matched to adjust the size of the focus, and the sizes of the focuses at various angles and sizes can be obtained through accurate matrix calculation, so that the fine control of the focus is realized.

Preferably, the first solenoid is in a thread-like structure design, the first solenoid is a solenoid magnet, and the first solenoid and the first electron beam envelope are mutually matched, so that the solenoid can adjust the proportion of the focal length and the width and cause the deliberate coupling of the length and the width.

Preferably, the first inlet and the first outlet are designed to be symmetrical structures, the first inlet, the first outlet and the first solenoid are mutually matched, and the direction and the size of the electron beam hitting the anode target disk are adjusted by accurately controlling the change of the magnetic field, so that the purpose of quickly adjusting the size and the shape of the focus is achieved.

Preferably, the second solenoid is in a thread-like structural design, the second solenoid is a solenoid magnet, and the second solenoid is mutually matched with the envelope of the second electron beam to adjust the size of the focus, so that fine control of the focus is realized.

Preferably, the second is inserted the mouth and is connect the export with the second and be the symmetrical structure design, the second is inserted mouth, second and is connect export and second solenoid mutual adaptation, is convenient for adjust the focus of X-ray tube, has improved X-ray tube's flexibility.

Preferably, the side of the anode target disc is designed to be an inclined structure, and the size of the focal size can be adjusted in a large range by utilizing the target disc back scattering structure of the anode target disc, so that the flexibility of the X-ray tube is improved.

Compared with the prior art, the beneficial effects of the utility model are that:

1. this novel X ray tube structure of steerable focus size, setting through first solenoid and second solenoid, utilize first solenoid and second solenoid to cooperate jointly and adjust the focus size, it is two coupled variables together through focus size and angle during the regulation, when adjusting the focus size, the angle also can change, for more convenient regulation, use the magnetic field of first solenoid and second solenoid to control the line current, it adjusts direction and size that the electron beam was beaten on the target disc to have realized the accurate control magnetic field change, thereby reach the purpose of quick adjustment focus size and shape, X-ray tube focusing point size and directional control's flexibility has been improved, and lower manufacturing cost and simpler mounting means have been had, X-ray tube's practicality has been improved greatly.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic front view of the structure of the present invention;

fig. 3 is a schematic top view of the first solenoid according to the present invention.

In the figure: 1. a cathode emission disk; 2. a first solenoid; 3. a first electron beam envelope; 4. a first access port; 5. a first outlet port; 6. a second electron beam envelope; 7. a second solenoid; 8. a second access port; 9. a second outlet port; 10. an anode target disk.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a novel X-ray tube structure capable of controlling focus size comprises a cathode emission disk 1, wherein a first solenoid 2 is arranged at the lower end of the cathode emission disk 1, a first electron beam envelope 3 is arranged on the inner side of the first solenoid 2 and below the cathode emission disk 1, a first inlet 4 is arranged on the left side of the upper end of the first solenoid 2, a first outlet 5 is arranged on the left side of the lower end of the first solenoid 2, a second electron beam envelope 6 is arranged at the lower end of the first electron beam envelope 3, a second solenoid 7 is arranged on the outer side of the second electron beam envelope 6, a second inlet 8 is arranged on the left side of the upper end of the second solenoid 7, a second outlet 9 is arranged on the left side of the lower end of the second solenoid 7, an anode target disk 10 is arranged at the lower end of the second electron beam envelope 6, and a first solenoid 2 and a second solenoid 7 are additionally arranged between an electron emitter and the anode target disk 10, the first section can be used for controlling the rotation angle of the focus, different rotation angles can be adjusted according to requirements, the second section and the third section are matched for adjusting the size of the focus, and the sizes of the focuses with various angles and sizes can be obtained through accurate matrix calculation, so that the fine control of the focus is realized;

the first solenoid 2 is designed in a thread-shaped structure, the first solenoid 2 is a solenoid magnet, the first solenoid 2 is matched with the first electron beam envelope 3, so that the proportion of the focal length and the width of the solenoid can be conveniently adjusted, the length and the width of the solenoid can be coupled deliberately, the first inlet 4 and the first outlet 5 are designed in a symmetrical structure, the first inlet 4, the first outlet 5 and the first solenoid 2 are matched with each other, the direction and the size of the electron beam hitting the anode target disk 10 can be adjusted by accurately controlling the change of the magnetic field, thereby achieving the purpose of quickly adjusting the size and the shape of the focal point, the second solenoid 7 is designed in a thread-shaped structure, the second solenoid 7 is a solenoid magnet, the second solenoid 7 is matched with the second electron beam envelope 6, the size of the focal point can be adjusted, thereby realizing the fine control of the focal point, the second inlet 8 and the second outlet 9 are designed in a symmetrical structure, the second is inserted mouth 8, second and is connect export 9 and the mutual adaptation of second solenoid 7, is convenient for adjust X-ray tube's focus, has improved X-ray tube's flexibility, and the avris of positive pole target dish 10 is slope structural design, utilizes the target dish back scattering structure of positive pole target dish 10, can be in very large range adjustment focus size's size, has improved X-ray tube's flexibility.

The working principle is as follows: firstly, after an X-ray tube is powered on, a cathode 3 emits an electron beam, the electron beam forms an electron beam envelope 6 and directly impacts an anode target disk 9 through electric field or magnetic field focusing, so that X-rays are generated, the focus of the electron beam is controlled by utilizing the magnetic fields of a first solenoid 7 and a second solenoid 8, the rotation angle of the focus can be controlled by using a first section, different rotation angles can be adjusted according to requirements, the size of the focus can be adjusted by matching a second section and a third section, the focus sizes of various angles and sizes can be obtained through accurate matrix calculation, so that the fine control of the focus is realized, a plurality of X-ray tubes adopt a target disk backscattering structure, the target disks of the backscattering structure have certain angles, generally, the length-width ratio of an electron beam envelope interface is larger, so that the length-width direction of a beam section can be adjusted by the solenoids, and the size of the focus size can be adjusted in a large range, in application, the reason that the focus size and the angle are adjusted by using the cooperation of the multiple sections of solenoid magnets is that the focus size and the angle are two variables coupled together, the angle can also be changed when the focus size is adjusted, two groups of solenoid magnets of the first solenoid 7 and the second solenoid 8 are used for controlling the beam current for more convenient adjustment, and the purpose can be realized by using two or more solenoid magnets in the adjustment, so that the size and the direction of the focus can be flexibly controlled, and compared with four-pole iron focusing, the adjustable focusing device has the advantages of lower manufacturing cost and simpler installation mode.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A new X-ray tube structure with controllable focus size, comprising a cathode emission disk (1), characterized in that: the lower extreme of cathode emission dish (1) is provided with first solenoid (2), the inboard below that is located cathode emission dish (1) of first solenoid (2) is provided with first electron beam envelope (3), the left side of first solenoid (2) upper end is provided with first access mouth (4), the left side of first solenoid (2) lower extreme is provided with first access mouth (5), the lower extreme of first electron beam envelope (3) is provided with second electron beam envelope (6), the outside of second electron beam envelope (6) is provided with second solenoid (7), the left side of second solenoid (7) upper end is provided with second access mouth (8), the left side of second solenoid (7) lower extreme is provided with the second and connects export (9), positive pole target dish (10) are installed to the lower extreme of second electron beam envelope (6).

2. The novel X-ray tube structure capable of controlling the focus size according to claim 1, wherein: the first solenoid (2) is designed in a thread-shaped structure, the first solenoid (2) is a solenoid magnet, and the first solenoid (2) is matched with the first electron beam envelope (3).

3. The novel X-ray tube structure capable of controlling the focus size according to claim 1, wherein: first income mouth (4) and first connecing export (5) are the symmetrical structure design, first income mouth (4), first connecing export (5) and first solenoid (2) mutual adaptation.

4. The novel X-ray tube structure capable of controlling the focus size according to claim 1, wherein: the second solenoid (7) is in a thread-shaped structure design, the second solenoid (7) is a solenoid magnet, and the second solenoid (7) is matched with the second electron beam envelope (6).

5. The novel X-ray tube structure capable of controlling the focus size according to claim 1, wherein: the second is inserted mouthful (8) and is connect export (9) with the second and be the symmetrical structure design, second is inserted mouthful (8), the second and is connect export (9) and second solenoid (7) mutual adaptation.

6. The novel X-ray tube structure capable of controlling the focus size according to claim 1, wherein: the side of the anode target disc (10) is designed into an inclined structure.