CN210668260U

CN210668260U - X-ray tube with large emission angle

Info

Publication number: CN210668260U
Application number: CN201922245326.1U
Authority: CN
Inventors: 李舒; 李智文
Original assignee: Shanghai Keyway Electron Co ltd
Current assignee: Shanghai Keyway Electron Co ltd
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2020-06-02
Anticipated expiration: 2029-12-13

Abstract

The utility model relates to a big emission angle x-ray tube, including tube core, negative pole and positive pole set up in the tube core with relative form, and the positive pole has one and is used for electron bombardment to produce the positive pole target of x ray, and slope with the terminal surface that the negative pole is relative, and the target face angle of positive pole target is 42, and the tube core middle part is just being equipped with the x ray output window to positive pole target department, and the diameter of x ray output window is 20 mm. The utility model has the advantages that: the emitting angle of the X-ray tube is increased to 40 degrees by increasing the target surface angle of the anode target, so that the irradiation area is effectively improved.

Description

X-ray tube with large emission angle

Technical Field

The utility model relates to an x-ray tube field, concretely relates to big transmission angle x-ray tube.

Background

The x-ray technology is widely applied to various fields of national economy, different applications have different requirements on the x-ray tube, and the traditional x-ray tube has the problems of small emission angle and small irradiation area.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the present invention is to provide an x-ray tube with a large emission angle to overcome the disadvantages of the prior art.

The utility model provides an above-mentioned technical problem's technical scheme as follows: the large-emission-angle X-ray tube comprises a tube core, a cathode and an anode, wherein the cathode and the anode are oppositely arranged in the tube core, the end surface of the anode opposite to the cathode is provided with an inclined anode target for generating X-rays through electron bombardment, the target surface angle of the anode target is 42 degrees, the middle part of the tube core is provided with an X-ray output window opposite to the anode target, and the diameter of the X-ray output window is 20 mm.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Furthermore, the X-ray detector also comprises a shell, the tube core is packaged in the shell, a window flange is arranged on the shell corresponding to the X-ray output window, and the inner diameter of the window flange is 16 mm.

Further, transformer oil is filled in a gap between the tube core and the shell.

And the high-voltage cable socket and the filament socket are respectively electrically connected with the filament in the anode and the cathode.

The utility model has the advantages that: the emitting angle of the X-ray tube is increased to 40 degrees by increasing the target surface angle of the anode target, so that the irradiation area is effectively improved.

Drawings

Fig. 1 is a schematic structural diagram of an x-ray tube with a large emission angle according to the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. die, 110, x-ray output window, 2, cathode, 3, anode, 310, anode target, 4, envelope, 410, window flange, 5, high voltage cable socket, 6, filament socket.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

Example 1, as shown in fig. 1, a large emission angle x-ray tube includes a tube core 1, a cathode 2 and an anode 3, the cathode 2 and the anode 3 are oppositely disposed in the tube core 1, the end surface of the anode 3 opposite to the cathode 2 has an inclined anode target 310 for generating x-rays by electron bombardment, the face angle of the anode target 310 is 42 °, the middle part of the tube core 1 is provided with an x-ray output window 110 opposite to the anode target 310, and the diameter of the x-ray output window 110 is 20 mm.

Example 2, as shown in fig. 1, this example is a further improvement on example 1, and specifically includes the following steps:

the large-emission-angle x-ray tube further comprises a shell 4, the tube core 1 is encapsulated in the shell 4, a window flange 410 is arranged on the shell 4 corresponding to the x-ray output window 110, the inner diameter of the window flange 410 is 16mm, and the shell 4 is usually made of stainless steel materials.

Example 3, as shown in fig. 1, this example is a further improvement on example 2, and specifically includes the following steps:

the gap between the tube core 1 and the shell 4 is filled with transformer oil which is used for high-voltage insulation and heat dissipation.

Example 4, as shown in fig. 1, this example is a further improvement on the basis of examples 2 or 3, and specifically includes the following steps:

the large-emission-angle x-ray tube further comprises a high-voltage cable socket 5 and a filament socket 6, wherein the high-voltage cable socket 5 and the filament socket 6 are both arranged on the shell 4, the high-voltage cable socket 5 and the filament socket 6 are respectively electrically connected with filaments in the anode 3 and the cathode 2, after the filament socket 6 is externally connected with a power supply, a certain voltage is applied to the filament in the cathode 2 to heat and emit electrons, the electrons emitted by the filament are converged under the focusing action of the cathode 2 to form an electron current, and after the high-voltage cable socket 5 is externally connected with a high-voltage power supply, the converged electron current is shot to the anode target 310 at a high speed under the action of the high voltage of the anode 3 to generate x-rays.

Use of a large emission angle x-ray tube

The device is used for large-area x-ray nondestructive detection, and nondestructive detection of internal defects of large-area or multiple workpieces, so that the detection efficiency is improved;

the thickness measuring device is used for measuring the thickness of an X-ray, increases the irradiation area of the X-ray, improves the intensity of the X-ray, is beneficial to improving the resolution ratio, and thus improves the measurement precision.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. An x-ray tube with a large emission angle is characterized by comprising a tube core (1), a cathode (2) and an anode (3), wherein the cathode (2) and the anode (3) are oppositely arranged in the tube core (1), the end face of the anode (3) opposite to the cathode (2) is provided with an anode target (310) which is used for generating x-rays through electron bombardment and is inclined, the target surface angle of the anode target (310) is 42 degrees, the middle part of the tube core (1) is provided with an x-ray output window (110) opposite to the anode target (310), and the diameter of the x-ray output window (110) is 20 mm.

2. The x-ray tube with a large emission angle according to claim 1, further comprising a housing (4), wherein the tube core (1) is encapsulated in the housing (4), a window flange (410) is disposed on the housing (4) corresponding to the x-ray output window (110), and an inner diameter of the window flange (410) is 16 mm.

3. The x-ray tube according to claim 2, wherein the gap between the tube core (1) and the housing (4) is filled with transformer oil.

4. A large emission angle x-ray tube according to claim 2 or 3, further comprising a high voltage cable socket (5) and a filament socket (6), both the high voltage cable socket (5) and the filament socket (6) being arranged on the envelope (4), the high voltage cable socket (5) and the filament socket (6) being electrically connected to filaments in the anode (3) and the cathode (2), respectively.