Heat dissipating x-ray tube

Abstract

The utility model discloses a heat dissipation formula X ray tube, it includes glass shell, glass shell one end is provided with cathode assembly, glass shell one end is provided with anode assembly, and cathode assembly generates free electron through thermionic emission process, and anode assembly absorbs free electron and generates X ray, and glass shell outside fixedly connected with metal protective housing, and the metal protective housing bottom is provided with the through slot, and the electromagnetic coil is activated and produces the rotation magnetic field and gives birth to permanent magnet and drives target block rotation, and the electron that tungsten wire emits spreads to the larger area, and the heat capacity of X ray tube is increased significantly, and the insulating oil carries out heat exchange first during tungsten wire heating process, and simultaneously, the anode tube drives second bevel gear rotation, and the cooperation of second bevel gear and first bevel gear drives second pulley rotation, and under the action of transmission belt, the fan blade produces the downward airflow, and the airflow is discharged from the air outlet and carries out the cooling of insulating oil, and the inclined plane air deflector changes the wind direction, prevents the hot airflow and directly blows to the X ray irradiation place.

Description

Technical Field

[0001] This utility model relates to the field of X-ray tube technology, specifically a heat-dissipating X-ray tube. Background Technology

[0002] With the rapid development of science and technology, X-ray tubes are playing an increasingly important role in various fields such as medical diagnosis, security inspection, and non-destructive testing. The principle behind X-ray tube generation is as follows: the cathode filament is heated by an electric current, causing electrons to overcome the work function and form an electron cloud on the surface. Under the influence of a strong electric field with a voltage of hundreds of thousands of volts applied between the cathode and anode, the electrons are accelerated towards the anode and collide with the target surface, generating X-rays. During operation, the temperature at the impact point on the anode target disk can reach 2600°C-2700°C, and this heat dissipates into the insulating oil inside the X-ray tube, causing the oil temperature to rise.

[0003] Most existing X-ray tubes use insulating cooling oil for heat dissipation. When using oil cooling alone, the temperature of the insulating oil will gradually rise as the X-ray tube is used, and the heat dissipation effect will gradually decrease over time. Utility Model Content

[0004] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0005] In view of the problems mentioned above and / or existing heat-dissipating X-ray tubes, this utility model is proposed.

[0006] Therefore, the purpose of this invention is to provide a heat-dissipating X-ray tube. During use, the tungsten filament is energized, heating up and generating free electrons to form space charges. The target block absorbs these free electrons and generates X-rays. A metal protective shell shields the upper part of the glass outer shell, and the X-rays are emitted from the through-slot to the bottom, reducing unnecessary radiation caused by X-ray scattering. An electromagnetic coil is energized through a plug, activating it to generate a rotating magnetic field that drives a permanent magnet to rotate the target block, diffusing the electrons emitted by the tungsten filament to a larger area and significantly increasing the heat capacity of the X-ray tube. During the heating process of the tungsten filament, the insulating oil undergoes heat exchange first. Simultaneously, the anode tube drives the second bevel gear to rotate. The cooperation between the second and first bevel gears drives the second pulley to rotate. Under the action of the transmission belt, the fan blades generate a downward airflow. The airflow is discharged from the air outlet to cool the insulating oil. The inclined air guide plate changes the airflow direction, preventing the hot airflow from blowing directly onto the X-ray irradiation area. This solves the problem that most existing X-ray tubes use insulating cooling oil for heat dissipation, and the temperature of the insulating oil gradually rises with the use of the X-ray tube, resulting in a gradual decrease in heat dissipation efficiency over time.

[0007] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0008] A heat-dissipating X-ray tube includes a glass shell, a cathode assembly at one end of the glass shell, and an anode assembly at the other end of the glass shell. The cathode assembly generates free electrons through thermionic emission, and the anode assembly absorbs the free electrons and generates X-rays. A metal protective shell is fixedly connected to the outside of the glass shell. A through groove is provided at the bottom of the metal protective shell, and a driving assembly is provided on one side of the metal protective shell. The driving assembly drives the anode assembly to rotate. The interior of the glass shell is filled with insulating oil, and a heat dissipation assembly is provided on the top of the metal protective shell. The heat dissipation assembly is connected to the driving assembly and cools the insulating oil.

[0009] In a preferred embodiment of the heat-dissipating X-ray tube described in this utility model, the driving component includes an electromagnetic coil, and a power connector is fixedly connected to one side of the metal protective shell, the power connector being electrically connected to the electromagnetic coil.

[0010] In a preferred embodiment of the heat-dissipating X-ray tube described in this utility model, the anode assembly includes an anode tube, a permanent magnet is disposed inside the anode tube, and the anode tube is located at the center of the electromagnetic coil.

[0011] In a preferred embodiment of the heat-dissipating X-ray tube of this utility model, a first through hole is provided at one end of the glass shell, the anode tube is located inside the first through hole, a first limiting block is provided at one end of the anode tube, a second limiting block is provided at one end of the anode tube, the first limiting block and the second limiting block are respectively located at both ends of the first through hole, and a target block is fixedly connected to one side of the first limiting block.

[0012] In a preferred embodiment of the heat-dissipating X-ray tube of this utility model, the cathode assembly includes a cathode tube, a third limiting block is provided at one end of the cathode tube, a fourth limiting block is provided at one end of the cathode tube, a second through hole is provided at one end of the glass shell, the third limiting block and the fourth limiting block are respectively located at both ends of the second through hole, and a tungsten wire is fixedly connected inside the cathode tube.

[0013] In a preferred embodiment of the heat dissipation X-ray tube described in this utility model, the heat dissipation component includes a fan blade, an airflow chamber is provided inside the metal protective shell, one end of the fan blade is movably connected to the top of the airflow chamber, one end of the fan blade passes through the top of the metal protective shell and is fixedly connected to a first pulley, and multiple air outlets are provided at the bottom of the metal protective shell, with inclined air guide plates fixedly connected to the bottom of the air outlets.

[0014] In a preferred embodiment of the heat-dissipating X-ray tube of this utility model, a first protrusion is provided on one side of the metal protective shell, a rotating shaft is movably connected to the middle of the first protrusion, a second pulley is fixedly connected to one end of the rotating shaft, and a transmission belt is provided between the second pulley and the first pulley.

[0015] In a preferred embodiment of the heat-dissipating X-ray tube described in this utility model, a first bevel gear is fixedly connected to one side of the second limiting block through the metal protective shell, and a second bevel gear is fixedly connected to one end of the rotating shaft, with the second bevel gear meshing with the first bevel gear.

[0016] In a preferred embodiment of the heat-dissipating X-ray tube of this utility model, the metal protective shell is provided with a first limiting groove and a second limiting groove, the glass shell is provided with a plurality of fifth limiting blocks on the outside, and a sixth limiting block is fixedly connected between the plurality of fifth limiting blocks. The fifth limiting blocks are located in the first limiting groove, and the sixth limiting block is located in the second limiting groove.

[0017] In a preferred embodiment of the heat-dissipating X-ray tube described in this utility model, a plurality of second protrusions are provided at one end of the metal protective shell, and screws are movably connected inside the second protrusions, the screws being threadedly connected to the external fixing frame.

[0018] Compared with existing technologies, the advantages of this invention are as follows: When a tungsten filament is energized, it heats up and generates free electrons, forming space charges. The target absorbs these free electrons and generates X-rays. A metal protective shell shields the upper part of the glass outer shell, allowing X-rays to be emitted from the through-slot to the bottom, reducing unnecessary radiation caused by X-ray scattering. An electromagnetic coil is energized via a plug, activating it to generate a rotating magnetic field that drives a permanent magnet to rotate the target, diffusing the electrons emitted by the tungsten filament to a larger area and significantly increasing the heat capacity of the X-ray tube. During the heating process of the tungsten filament, the insulating oil undergoes heat exchange first, while the anode tube drives the second bevel gear to rotate. The cooperation between the second and first bevel gears drives the second pulley to rotate, and the transmission belt drives the fan blades to generate a downward airflow. The airflow exits through the outlet to cool the insulating oil. A sloping guide plate changes the airflow direction, preventing hot air from blowing directly onto the X-ray irradiation area. This solves the problem that most existing X-ray tubes use insulating cooling oil for heat dissipation, and that the temperature of the insulating oil gradually rises with the duration of use, resulting in a gradual decrease in heat dissipation efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0020] Figure 1 This is a schematic diagram of the overall structure of a heat-dissipating X-ray tube according to the present invention.

[0021] Figure 2 This is a bottom view of the overall structure of a heat-dissipating X-ray tube according to this utility model.

[0022] Figure 3 This is a cross-sectional view of the glass shell structure of a heat-dissipating X-ray tube according to this utility model.

[0023] Figure 4 This is a schematic diagram of the cathode tube structure of a heat-dissipating X-ray tube according to the present invention.

[0024] Figure 5 This is a first cross-sectional view of the metal protective shell structure of a heat-dissipating X-ray tube according to this utility model.

[0025] Figure 6 This is a second cross-sectional view of the metal protective shell structure of a heat-dissipating X-ray tube according to this utility model. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Example 1

[0028] Please see Figures 1-6 The glass housing 1 has a cathode assembly at one end and an anode assembly at the other end. The cathode assembly generates free electrons through thermionic emission, and the anode assembly absorbs the free electrons and generates X-rays. A metal protective shell 2 is fixedly connected to the outside of the glass housing 1. A through groove 32 is provided at the bottom of the metal protective shell 2. A drive assembly is provided on one side of the metal protective shell 2. The drive assembly drives the anode assembly to rotate. The inside of the glass housing 1 is filled with insulating oil. A heat dissipation assembly is provided on the top of the metal protective shell 2. The heat dissipation assembly is connected to the drive assembly and cools the insulating oil.

[0029] The drive assembly includes an electromagnetic coil 28, and a power connector 13 is fixedly connected to one side of the metal protective shell 2. The power connector 13 is electrically connected to the electromagnetic coil 28.

[0030] The anode assembly includes an anode tube 20, which contains a permanent magnet and is located at the center of the electromagnetic coil 28.

[0031] A first through hole 16 is provided at one end of the glass shell 1. The anode tube 20 is located inside the first through hole 16. A first limiting block 23 is provided at one end of the anode tube 20, and a second limiting block 25 is provided at one end of the anode tube 20. The first limiting block 23 and the second limiting block 25 are respectively located at both ends of the first through hole 16. A target block 24 is fixedly connected to one side of the first limiting block 23.

[0032] The cathode assembly includes a cathode tube 19, a third limiting block 7 is provided at one end of the cathode tube 19, a fourth limiting block 21 is provided at one end of the cathode tube 19, a second through hole 15 is provided at one end of the glass shell 1, the third limiting block 7 and the fourth limiting block 21 are respectively located at both ends of the second through hole 15, and a tungsten wire 22 is fixedly connected inside the cathode tube 19.

[0033] The heat dissipation component includes a fan blade 4, an airflow chamber 34 is provided inside the metal protective shell 2, one end of the fan blade 4 is movably connected to the top of the airflow chamber 34, one end of the fan blade 4 passes through the top of the metal protective shell 2 and is fixedly connected to a first pulley 5, and multiple air outlets 14 are provided at the bottom of the metal protective shell 2, and a sloping air guide plate 33 is fixedly connected to the bottom of the air outlet 14.

[0034] A first protrusion 9 is provided on one side of the metal protective shell 2. A rotating shaft 10 is movably connected to the middle of the first protrusion 9. A second pulley 8 is fixedly connected to one end of the rotating shaft 10. A transmission belt 6 is provided between the second pulley 8 and the first pulley 5.

[0035] The second limiting block 25 has a first bevel gear 11 fixedly connected to one side of the metal protective shell 2, and a second bevel gear 12 fixedly connected to one end of the rotating shaft 10. The second bevel gear 12 meshes with the first bevel gear 11.

[0036] The metal protective shell 2 has a first limiting groove 26 and a second limiting groove 27 respectively inside. The glass shell 1 has a plurality of fifth limiting blocks 17 on its outer side. A sixth limiting block 18 is fixedly connected between the plurality of fifth limiting blocks 17. The fifth limiting blocks 17 are located in the first limiting groove 26 and the sixth limiting block 18 is located in the second limiting groove 27.

[0037] Specifically, tungsten wire 22 is energized, generating free electrons that form space charges. Target block 24 absorbs these free electrons and produces X-rays. Metal protective shell 2 shields the upper part of glass shell 1, and X-rays are emitted from the through slot 32 to the bottom, reducing unnecessary radiation caused by X-ray scattering. Electromagnetic coil 28 is energized through connector 13, activating it to generate a rotating magnetic field that drives permanent magnets to rotate target block 24, diffusing the electrons emitted by tungsten wire 22 to a larger area and significantly increasing the heat capacity of the X-ray tube. During the heating process of tungsten wire 22, insulating oil is heated first. During the exchange, the anode tube 20 drives the second bevel gear 12 to rotate. Through the cooperation of the second bevel gear 12 and the first bevel gear 11, the second pulley 8 is driven to rotate. Under the action of the transmission belt 6, the fan blades 4 generate a downward airflow. The airflow is discharged from the air outlet 14 to cool the insulating oil. The inclined air guide plate 33 changes the airflow direction to prevent the hot airflow from blowing directly onto the X-ray irradiation point. This solves the problem that most existing X-ray tubes often use insulating heat-dissipating oil for heat dissipation. When using oil cooling alone, the temperature of the insulating oil gradually rises with the use of the X-ray tube, and the heat dissipation effect gradually decreases with the use time.

[0038] Example 2

[0039] Please see Figure 5 The metal protective shell 2 has multiple second protrusions 29 at one end, and screws 30 are movably connected inside the second protrusions 29. The screws 30 are threadedly connected to the external fixing bracket.

[0040] Specifically, this facilitates the installation of the device.

[0041] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A heat-dissipating X-ray tube, characterized in that, The device includes a glass shell (1), a cathode assembly at one end of the glass shell (1), an anode assembly at the other end of the glass shell (1), the cathode assembly generates free electrons through thermionic emission, the anode assembly absorbs free electrons and generates X-rays, a metal protective shell (2) is fixedly connected to the outside of the glass shell (1), a through groove (32) is provided at the bottom of the metal protective shell (2), a driving assembly is provided on one side of the metal protective shell (2), the driving assembly drives the anode assembly to rotate, the glass shell (1) is filled with insulating oil, and a heat dissipation assembly is provided on the top of the metal protective shell (2), the heat dissipation assembly is connected to the driving assembly and cools the insulating oil.

2. The heat-dissipating X-ray tube according to claim 1, characterized in that, The drive assembly includes an electromagnetic coil (28), and a power connector (13) is fixedly connected to one side of the metal protective shell (2). The power connector (13) is electrically connected to the electromagnetic coil (28).

3. A heat-dissipating X-ray tube according to claim 2, characterized in that, The anode assembly includes an anode tube (20), which has a permanent magnet inside and is located at the center of the electromagnetic coil (28).

4. A heat-dissipating X-ray tube according to claim 3, characterized in that, The glass shell (1) has a first through hole (16) at one end, the anode tube (20) is located inside the first through hole (16), the anode tube (20) has a first limiting block (23) at one end, the anode tube (20) has a second limiting block (25) at one end, the first limiting block (23) and the second limiting block (25) are located at both ends of the first through hole (16), and a target block (24) is fixedly connected to one side of the first limiting block (23).

5. A heat-dissipating X-ray tube according to claim 4, characterized in that, The cathode assembly includes a cathode tube (19), a third limiting block (7) is provided at one end of the cathode tube (19), a fourth limiting block (21) is provided at one end of the cathode tube (19), a second through hole (15) is provided at one end of the glass shell (1), the third limiting block (7) and the fourth limiting block (21) are respectively located at both ends of the second through hole (15), and a tungsten wire (22) is fixedly connected inside the cathode tube (19).

6. A heat-dissipating X-ray tube according to claim 5, characterized in that, The heat dissipation component includes a fan blade (4), and an airflow chamber (34) is provided inside the metal protective shell (2). One end of the fan blade (4) is movably connected to the top of the airflow chamber (34), and one end of the fan blade (4) is fixedly connected to a first pulley (5) through the top of the metal protective shell (2). Multiple air outlets (14) are provided at the bottom of the metal protective shell (2), and a sloping air guide plate (33) is fixedly connected to the bottom of the air outlet (14).

7. A heat-dissipating X-ray tube according to claim 6, characterized in that, The metal protective shell (2) has a first boss (9) on one side, and a rotating shaft (10) is movably connected to the middle of the first boss (9). A second pulley (8) is fixedly connected to one end of the rotating shaft (10), and a transmission belt (6) is provided between the second pulley (8) and the first pulley (5).

8. A heat-dissipating X-ray tube according to claim 7, characterized in that, The second limiting block (25) has a first bevel gear (11) fixedly connected to one side of the metal protective shell (2), and a second bevel gear (12) fixedly connected to one end of the rotating shaft (10). The second bevel gear (12) meshes with the first bevel gear (11).

9. A heat-dissipating X-ray tube according to claim 8, characterized in that, The metal protective shell (2) is provided with a first limiting groove (26) and a second limiting groove (27) respectively. The glass shell (1) is provided with a plurality of fifth limiting blocks (17) on the outside. A sixth limiting block (18) is fixedly connected between the plurality of fifth limiting blocks (17). The fifth limiting block (17) is located in the first limiting groove (26), and the sixth limiting block (18) is located in the second limiting groove (27).

10. A heat-dissipating X-ray tube according to claim 9, characterized in that, The metal protective shell (2) has a plurality of second protrusions (29) at one end, and screws (30) are movably connected inside the second protrusions (29), and the screws (30) are threadedly connected to the external fixing frame.

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