CN210668258U

CN210668258U - X-ray tube capable of preventing x-ray leakage

Info

Publication number: CN210668258U
Application number: CN201922246712.2U
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 prevent x-ray tube of x-ray leakage, including shell, tube core, negative pole and positive pole, the tube core encapsulates in the shell, and negative pole and positive pole set up in the tube core with relative form, are equipped with x-ray output window on the tube core, and outside the shell was worn out to x-ray output window, inlayed on the whole inside wall of shell and be equipped with the lead plate. The utility model has the advantages that: the lead plate is introduced, so that the problem of x-ray leakage of the x-ray tube in the working process can be effectively solved, and the method is simple and easy to implement, has high practicability and has a good using effect.

Description

X-ray tube capable of preventing x-ray leakage

Technical Field

The utility model relates to an x-ray technology field especially relates to an x-ray tube that prevents x-ray leakage.

Background

The x-ray technology is widely applied to various fields of national economy, different requirements are imposed on the x-ray tube due to different purposes, and the traditional x-ray tube has the problem of ray leakage, so that the ray leakage damages the environment and damages the health of an operator.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that an X-ray tube for preventing X-ray leakage is provided to overcome not enough among the above-mentioned prior art.

The utility model provides an above-mentioned technical problem's technical scheme as follows: an X-ray tube for preventing X-ray leakage comprises a shell, a tube core, a cathode and an anode, wherein the tube core is packaged in the shell, the cathode and the anode are oppositely arranged in the tube core, an X-ray output window is arranged on the tube core, the X-ray output window penetrates out of the shell, and a lead plate is embedded on the whole inner side wall of the shell.

In the above scheme, the thickness of the lead plate is 2 mm.

In the above scheme, a gap is formed between the outer wall of the tube core and the inner wall of the shell, and the transformer oil is injected into the gap.

In the scheme, the high-voltage lamp further comprises a high-voltage socket and a filament socket, wherein the high-voltage socket and the filament socket are both arranged at the end part of the shell, and the high-voltage socket and the filament socket are respectively electrically connected with filaments in the anode and the cathode through leads.

In the above scheme, the part of the filament socket exposed outside the shell is sleeved with the leakage-proof shield.

In the above scheme, the leakage-proof shield is made of stainless steel material.

In the scheme, the end face of the anode opposite to the cathode is provided with a slope surface for generating x-rays by electron bombardment, and the middle part of the tube core is provided with an x-ray output window at the position opposite to the slope surface.

The utility model has the advantages that: the lead plate is introduced, so that the problem of x-ray leakage of the x-ray tube in the working process can be effectively solved, and the method is simple and easy to implement, has high practicability and has a good using effect.

Drawings

Fig. 1 is a cross-sectional view of an x-ray tube for preventing x-ray leakage according to the present invention.

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

1. envelope, 2, die, 210, x-ray output window, 3, cathode, 4, anode, 5, lead plate, 6, high voltage socket, 7, filament socket, 8, leak-proof shield.

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.

Embodiment 1, as shown in fig. 1, an x-ray tube for preventing x-ray leakage includes a housing 1, a tube core 2, a cathode 3 and an anode 4, the tube core 2 is enclosed in the housing 1, the cathode 3 and the anode 4 are oppositely disposed in the tube core 2, an x-ray output window 210 is disposed on the tube core 2, the x-ray output window 210 penetrates out of the housing 1, and a lead plate 5 is embedded on the whole inner side wall of the housing 1.

The electrons emitted from the filament are converged by the focusing action of the cathode 3 to form an electron current, and the converged electron current is applied to the anode target at a high speed under the action of a high voltage of the anode 4 to generate x-rays, which are output from the x-ray output window 210. The die 2 packages the cathode 3, the anode 4 and the x-ray output window 210 together to obtain a high vacuum by evacuation, thereby obtaining good withstand voltage.

Embodiment 2, as shown in fig. 1, this embodiment is a further optimization performed on the basis of embodiment 1, and is specifically as follows:

the thickness of the lead plate 5 is 2 mm.

Embodiment 3, as shown in fig. 1, this embodiment is further optimized based on

embodiment

1 or 2, and specifically includes the following steps:

a gap is formed between the outer wall of the tube core 2 and the inner wall of the shell 1, and transformer oil is injected into the gap and used for high-voltage insulation and heat dissipation.

Embodiment 4, as shown in fig. 1, this embodiment is further optimized based on any one of embodiments 1 to 3, and specifically includes the following steps:

the x-ray tube for preventing x-ray leakage further comprises a high voltage socket 6 and a filament socket 7, wherein the high voltage socket 6 and the filament socket 7 are both arranged at the end part of the shell 1, the high voltage socket 6 and the filament socket 7 are respectively electrically connected with filaments in the anode 4 and the cathode 3 through leads, high voltage generated by a high voltage power supply is transmitted to the anode 4 of the x-ray tube through a high voltage cable and the high voltage socket 6, and the filament socket 7 is used for supplying filament voltage output by an external filament power supply to filaments of the cathode 3.

Example 5, as shown in fig. 1, this example is a further optimization performed on the basis of example 4, and the specific details are as follows:

the part of the filament socket 7 exposed outside the shell 1 is sleeved with a leakage-proof shield 8, the leakage-proof shield 8 is made of stainless steel materials, x-rays leaked from the filament socket 7 with a common structure are serious, the protection is completed by an instrument matched with the leakage-proof shield, the weight and complexity of the instrument are increased, the protection effect is not good, the leaked x-rays are cut off and absorbed by the leakage-proof shield 8, the detection protection effect is good, the operation is simple and easy, and the cost is low.

Embodiment 6, as shown in fig. 1, this embodiment is further optimized based on any one of embodiments 1 to 5, and specifically includes the following steps:

the end face of the anode 4 opposite to the cathode 3 is provided with a slope surface for generating x-rays by electron bombardment, and the middle part of the tube core 2 is provided with an x-ray output window 210 at the position opposite to the slope surface.

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. The utility model provides a prevent x-ray tube of x-ray leakage, includes shell (1), tube core (2), negative pole (3) and positive pole (4), tube core (2) encapsulate in shell (1), negative pole (3) with positive pole (4) set up with relative form in tube core (2), be equipped with x-ray output window (210) on tube core (2), outside x-ray output window (210) worn out to shell (1), its characterized in that, inlay on the whole inside wall of shell (1) and be equipped with lead plate (5).

2. An x-ray tube for preventing x-ray leakage according to claim 1, wherein the thickness of the lead plate (5) is 2 mm.

3. The x-ray tube for preventing x-ray leakage according to claim 1, wherein a gap is provided between the outer wall of the tube core (2) and the inner wall of the housing (1), and transformer oil is injected into the gap.

4. An x-ray tube according to any one of claims 1 to 3, further comprising a high voltage socket (6) and a filament socket (7), wherein the high voltage socket (6) and the filament socket (7) are both disposed on the end of the envelope (1), and the high voltage socket (6) and the filament socket (7) are electrically connected to the filament inside the anode (4) and the cathode (3) respectively through wires.

5. An x-ray tube for preventing x-ray leakage according to claim 4, wherein the portion of the filament socket (7) exposed outside the envelope (1) is provided with a leakage-proof shield (8).

6. An x-ray tube for preventing x-ray leakage according to claim 5, characterized in that the leakage-proof shield (8) is made of stainless steel material.

7. An x-ray tube for preventing x-ray leakage according to claim 1, wherein the end surface of the anode (4) opposite to the cathode (3) has a slope for electron bombardment to generate x-rays, and the central portion of the tube core (2) is provided with the x-ray output window (210) at the position opposite to the slope.