A microfocus x-ray tube cavity protection device

Abstract

The utility model discloses a kind of micro-focus X-ray tube cavity protection devices, belong to X-ray tube technical field, including protective sleeve and shield sleeve installed outside protective sleeve, the outer fixed cover of protective sleeve, the outer wall of protective sleeve is fixed with a plurality of radiating fins, the shield sleeve is composed of inner layer shielding layer and outer layer shielding layer, heat insulation layer is arranged between the inner layer shielding layer and outer layer shielding layer, the inner wall of one side of shield sleeve is fixed with mounting bracket, mounting groove is opened in mounting bracket, and heat dissipation fan is installed in mounting groove. The micro-focus X-ray tube cavity protection device, not only can effectively shield X-ray, reduce leakage, protect operator and surrounding equipment, improve heat dissipation performance simultaneously, avoid heat accumulation to influence element performance and life.

Description

Technical Field

[0001] This utility model belongs to the field of X-ray tube technology, specifically relating to a microfocus X-ray tube cavity protection device. Background Technology

[0002] Microfocus X-ray tubes have wide applications in medical diagnostics, industrial inspection, and other fields. The cavity of a microfocus X-ray tube contains key components such as high-voltage components, filaments, and targets. These components generate X-rays and heat during operation, and the cavity needs to maintain a certain degree of vacuum.

[0003] However, existing microfocus X-ray tube cavity protection devices have some shortcomings. For example, the shielding effect against X-rays is not ideal, which can easily lead to X-ray leakage and cause harm to operators and surrounding equipment. The heat dissipation performance of the cavity is poor, and heat accumulation can affect the service life and performance of the components. Utility Model Content

[0004] The purpose of this invention is to provide a microfocus X-ray tube cavity protection device to solve the problems of poor X-ray shielding effect and poor heat dissipation performance mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a microfocus X-ray tube cavity protection device, comprising a protective sleeve and a shielding sleeve installed outside the protective sleeve. An end cap is fixed to the outside of the protective sleeve, and multiple heat dissipation fins are fixed to the outer wall of the protective sleeve. The shielding sleeve consists of an inner shielding layer and an outer shielding layer, with a heat insulation layer provided between the inner and outer shielding layers. A mounting bracket is fixed to one inner wall of the shielding sleeve, and a mounting groove is provided in the mounting bracket, with a cooling fan installed in the mounting groove.

[0006] In a further embodiment, the inner shielding layer is a lead plate layer, the outer shielding layer is a tungsten alloy plate layer, and the heat insulation layer is a ceramic fiber layer.

[0007] In a further embodiment, a sealing ring is fixed inside the end cap, and a sealing groove matching the sealing ring is formed on the outer wall of the protective sleeve.

[0008] In a further embodiment, the protective sleeve has multiple air inlets around its perimeter, and a heat dissipation groove is provided at one end of the protective sleeve. Dustproof nets are installed in both the air inlets and the heat dissipation groove.

[0009] In a further embodiment, the inner wall of the protective sleeve is provided with a thermally conductive coating, and a plurality of heat dissipation fins are evenly distributed on the outer side of the protective sleeve, the heat dissipation fins being integrally formed with the protective sleeve.

[0010] The technical effects and advantages of this utility model are as follows:

[0011] This microfocus X-ray tube cavity protection device adopts a gradient shielding structure of lead plate layer and tungsten alloy plate layer. It utilizes the high attenuation coefficient of lead for low-energy X-rays and the excellent shielding performance of tungsten alloy for high-energy X-rays to form a wide energy spectrum shielding system, which effectively reduces the X-ray leakage rate compared with the traditional single lead shielding structure. The ceramic fiber heat insulation layer set between the two shielding layers can effectively block the heat conduction of the external environment temperature to the protective sleeve and avoid component performance drift caused by temperature fluctuations.

[0012] By combining integrated heat sink fins and a cooling fan, a four-stage heat dissipation path is constructed: thermally conductive coating - protective sleeve - heat sink fins - forced convection. This enables control of the component surface temperature and avoids accelerated filament sublimation and target material thermal deformation caused by heat accumulation. This micro-focus X-ray tube cavity protection device can not only effectively shield X-rays, reduce leakage, and protect operators and surrounding equipment, but also improve heat dissipation performance and prevent heat accumulation from affecting component performance and lifespan. Attached Figure Description

[0013] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the protective sleeve and heat dissipation fins of this utility model;

[0016] Figure 3 This is a schematic diagram of the end cap structure of this utility model;

[0017] Figure 4 This is a cross-sectional view of the shielding sleeve of this utility model.

[0018] In the diagram: 1. Protective sleeve; 2. Shielding sleeve; 3. End cap; 4. Heat dissipation fins; 5. Thermally conductive coating; 6. Sealing ring; 7. Inner shielding layer; 8. Outer shielding layer; 9. Heat insulation layer; 10. Mounting bracket; 11. Cooling fan. Detailed Implementation

[0019] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0020] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, back, inside, and outside, are based on the directions shown in the figures of this utility model, and are explained here together.

[0021] This utility model provides, for example Figure 1-4 The microfocus X-ray tube cavity protection device shown includes a protective sleeve 1 and a shielding sleeve 2 installed outside the protective sleeve 1. The X-ray tube element is installed inside the protective sleeve 1. Threaded holes are opened at corresponding positions on the protective sleeve 1 and the outer shell of the X-ray tube element. With the help of micro screws, the protective sleeve 1 and the X-ray tube element can be stably connected. An end cap 3 is fixed to the outside of the protective sleeve 1. The end cap 3 is fixed to the shielding sleeve 2 by bolts. Multiple heat dissipation fins 4 are fixed to the outer wall of the protective sleeve 1. The multiple heat dissipation fins 4 are evenly distributed on the outer side of the protective sleeve 1. The heat dissipation fins 4 are integrally formed with the protective sleeve 1. The inner wall of the protective sleeve 1 is provided with a thermally conductive coating 5, which can play a better role in heat conduction. A sealing ring 6 is fixed inside the end cap 3. A sealing groove matching the sealing ring 6 is opened on the outer wall of the protective sleeve 1 to ensure the sealing between the end cap 3 and the protective sleeve 1.

[0022] The shielding sleeve 2 consists of an inner shielding layer 7 and an outer shielding layer 8. A heat insulation layer 9 is provided between the inner shielding layer 7 and the outer shielding layer 8. The inner shielding layer 7 is a lead plate layer, the outer shielding layer 8 is a tungsten alloy plate layer, and the heat insulation layer 9 is a ceramic fiber layer. Lead has good X-ray shielding performance, and tungsten alloy has a high density, which further enhances the shielding effect. The heat insulation layer 9 is a ceramic fiber layer, which has good heat insulation performance and reduces the influence of external temperature on the interior of the protective sleeve 1.

[0023] A mounting bracket 10 is fixed to one inner wall of the shielding sleeve 2. The mounting bracket 10 has a mounting groove, and a cooling fan 11 is installed in the mounting groove. Multiple air inlets are opened around the protective sleeve 1, and a heat dissipation groove is opened at one end of the protective sleeve 1. Dustproof nets are installed in both the air inlets and the heat dissipation groove. Multiple heat dissipation fins 4 absorb the heat transferred to the protective sleeve 1 by the X-ray tube element. When the cooling fan 11 is working, external air enters the shielding sleeve 2 through the air inlets and is then discharged through the heat dissipation groove, accelerating airflow and enhancing the heat dissipation effect.

[0024] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The control method of this utility model is through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0025] In the description of this utility model, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] Working principle:

[0027] The microfocus X-ray tube cavity protection device has the X-ray tube element installed inside the protective sleeve 1. The heat dissipation fins 4 on the outer wall of the protective sleeve 1 and the thermally conductive coating 5 on the inner wall work together to conduct the heat generated by the element to the surface of the protective sleeve 1. After the cooling fan 11 is started, the outside air enters through the air inlet holes around the protective sleeve 1 and is discharged through the heat dissipation groove, forming air convection, which accelerates the dissipation of heat on the heat dissipation fins 4, and constructs a heat dissipation path of "thermally conductive coating 5-protective sleeve 1-heat dissipation fins 4-forced convection" to control the surface temperature of the element.

[0028] Meanwhile, the inner shielding layer 7 lead plate layer of the shielding sleeve 2 utilizes the high attenuation characteristics of low-energy X-rays, while the outer shielding layer 8 tungsten alloy plate layer enhances the shielding of high-energy X-rays with its high density advantage. The heat insulation layer 9 ceramic fiber layer between the two layers blocks the heat conduction of external temperature to the protective sleeve 1, forming a wide energy spectrum shielding system and reducing the impact of temperature fluctuations on the components. Thus, while effectively shielding X-ray leakage, the heat dissipation structure avoids heat accumulation, protecting the performance and lifespan of the components.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A microfocus X-ray tube cavity protection device, comprising a protective sleeve (1) and a shielding sleeve (2) installed outside the protective sleeve (1), characterized in that: The protective sleeve (1) is fixed with an end cap (3) on the outside. Multiple heat dissipation fins (4) are fixed on the outer wall of the protective sleeve (1). The shielding sleeve (2) is composed of an inner shielding layer (7) and an outer shielding layer (8). A heat insulation layer (9) is provided between the inner shielding layer (7) and the outer shielding layer (8). A mounting bracket (10) is fixed on one side of the inner wall of the shielding sleeve (2). An installation groove is opened in the mounting bracket (10), and a cooling fan (11) is installed in the installation groove.

2. The microfocus X-ray tube cavity protection device according to claim 1, characterized in that: The inner shielding layer (7) is a lead plate layer, the outer shielding layer (8) is a tungsten alloy plate layer, and the heat insulation layer (9) is a ceramic fiber layer.

3. The microfocus X-ray tube cavity protection device according to claim 1, characterized in that: The end cap (3) is fixed with a sealing ring (6), and the outer wall of the protective sleeve (1) is provided with a sealing groove that matches the sealing ring (6).

4. The microfocus X-ray tube cavity protection device according to claim 3, characterized in that: The protective sleeve (1) has multiple air inlets around its perimeter, and a heat dissipation groove is provided at one end of the protective sleeve (1). Dustproof nets are installed in both the air inlets and the heat dissipation groove.

5. The microfocus X-ray tube cavity protection device according to claim 1, characterized in that: The inner wall of the protective sleeve (1) is provided with a thermally conductive coating (5), and a plurality of heat dissipation fins (4) are evenly distributed on the outer side of the protective sleeve (1). The heat dissipation fins (4) are integrally formed with the protective sleeve (1).

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