Radiation source device and detection apparatus

Abstract

The utility model discloses ray pipe device and detection equipment, include: box, X ray tube and control unit, X ray tube has the pipe body of fixed installation to the box, control unit sets up in the box, be provided with the box mounting hole of adapting with the pipe body on the box, at least partial pipe body extends in the box after pipe body fixed installation, be provided with pipe body mounting structure on the pipe body that extends in the box, and pipe body mounting structure is fixed to the box, the pipe body has the pipe cavity of vacuum seal, and the pipe cavity is formed by the sealed butt joint of first pipe body and second pipe body, and the first pipe body is metal spare, and pipe body mounting structure sets up in the first pipe body, and at least partial first pipe body is located in the box after pipe body installation. The ray device provided by the embodiment realizes the fixed installation of X ray tube on the box through pipe body mounting structure, and can make the assembly more firm while being convenient for assembly.

Description

TECHNICAL FIELD

[0001] The utility model relates to X ray technical field especially is ray source device and detection equipment. BACKGROUND

[0002] Ray source device is the special device that can produce X ray, because X line has the characteristic that penetrates, fluorescent and photographic effect, makes object form image on detection medium, because each kind of object has the difference of density and thickness, when X line penetrates different objects, the degree of X line absorption is different, so the X line amount that reaches detection medium has difference, forms the image of different black and white contrast, X ray is widely used in medical treatment, industry and security check lamp aspect carries out inspection or detects the damage.

[0003] X ray produces in X ray tube, and X ray tube provides vacuum environment for the generation of X ray, uses high voltage electric field in X ray tube, in the process of impact, electron suddenly decelerates, and the kinetic energy that it loses will be released in the form of photon, and the continuous part that forms X light spectrum is X ray. After the generation of X ray, the ray outlet of X ray tube is used to check or detect the damage, and the installation and fixing mode of the X ray tube in the prior art is relatively cumbersome, and the stability of installation is poor. UTILITY MODEL CONTENTS

[0004] The utility model discloses a kind of X ray tubes, to solve the deficiency in prior art, it is achieved by tube body installation structure X ray tube on the installation and fixing of box body, facilitate assembly while also can make assembly more firm.

[0005] The utility model provides a ray source device, including: including box body, X ray tube and control unit;The X ray tube has the tube body of installation and fixation to the box body;The control unit is set to the box body;

[0006] Box body is provided with the box body mounting hole compatible with the tube body, after the installation and fixation of the tube body, at least part of the tube body extends in the box body, tube body mounting structure is provided on the tube body that extends in the box body, and the tube body mounting structure is fixed to the box body;

[0007] The tube body has vacuum sealed lumen, and the tube body includes first tube body and second tube body, and the lumen is formed by the sealed butt joint of the first tube body and the second tube body, the first tube body is metal piece, and the tube body mounting structure is set to the first tube body, and at least part of the first tube body is located in the box body after the installation of the tube body.

[0008] Further, the tube mounting structure is annularly arranged outside the first tube body, and the ray source device further has a ray tube housing including a mounting flange and an outer housing arranged on the mounting flange, the outer housing is arranged outside the first tube body, and the mounting flange has a flange positioning hole, and the tube mounting structure is positioned to the flange positioning hole.

[0009] Further, the ray source device further has a shielding assembly including a first shielding ring arranged between the outer housing and the first tube body, the first shielding ring is arranged outside the first tube body, and the first shielding ring is positioned and supported in the outer housing.

[0010] Further, the ray tube housing further includes an inner housing arranged outside the second tube body, the inner housing is fixed to the box body, the box body has a side plate, the box body mounting hole is arranged on the side plate, and after the X-ray tube is mounted and fixed, the first tube body and the second tube body are respectively located inside and outside the box body, and the outer housing and the inner housing are respectively fixed and mounted on opposite sides of the side plate.

[0011] Further, the inner housing has an extension part arranged in the box body mounting hole, an annular main body arranged in a circumferential direction around the second tube body, and a tube mounting flange arranged outside the annular main body and used for mounting and fixing with the side plate, and the extension part is arranged at an end of the annular main body.

[0012] Further, the shielding assembly further includes a second shielding ring positioned in the annular main body and an end shielding ring arranged at an end of the second shielding ring away from the side plate, the end shielding ring seals an end opening of the second shielding ring to form a shielding structure arranged outside the second tube body together with the second shielding ring.

[0013] Part of the end shielding ring extends into and is positioned in the second shielding ring.

[0014] Further, the first shielding ring is provided with a shielding ring window at a position opposite to the ray outlet position.

[0015] The shielding assembly further has a window shielding part located at the position of the shielding ring window, the window shielding part is provided with a ray penetrating hole opposite to the ray outlet position, the ray penetrating hole has oppositely arranged first and second side walls, and a plane where the first side wall is located is approximately perpendicular to a plane where the second side wall is located.

[0016] Further, the ray source device further has a ray tube shell and a heat dissipation unit, the ray tube shell is arranged outside the first tube body, the heat dissipation unit comprises an inlet pipe and an outlet pipe, the inlet pipe and the outlet pipe are arranged side by side and both have a bent pipe structure, the bent pipe structure comprises a first extension section extending along the axial direction of the first tube body and a second extension section extending along the radial direction of the first tube body.

[0017] Further, the X-ray tube further comprises:

[0018] A negative electrode assembly arranged in the second tube body, comprising an electron emitter;

[0019] A positive electrode assembly arranged in the first tube body, comprising a positive electrode target;

[0020] A ray outlet arranged in the first tube body and communicating with the tube cavity, the ray outlet is arranged in the radial direction of the first tube body and opposite to the position of the positive electrode target;

[0021] A window sheet arranged in the first tube body and sealing the ray outlet so that the tube cavity maintains vacuum.

[0022] The utility model discloses a kind of detection equipment, including equipment frame and the ray source device of being arranged in the equipment frame, the ray source device is the ray source device of the described.

[0023] Compared with the prior art, the tube body of the ray device provided in the embodiment comprises a first tube body of a metal piece. Since the first tube body is made of metal, the tube body mounting structure can be conveniently arranged on the first tube body. The X-ray tube is mounted and fixed on the box body through the tube body mounting structure, which facilitates assembly and makes the assembly more firm. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is the structure schematic view of the ray source device disclosed by the utility model;

[0025] Figure 2 is the internal structure schematic view of the ray source device disclosed by the utility model after the box body is disassembled

[0026] Figure 3 is Figure 2 front view;

[0027] Figure 4 is Figure 3 sectional view in CC direction in the utility model;

[0028] Figure 5 is the structure schematic view of the X-ray tube in the ray source device disclosed by the utility model;

[0029] Figure 6It is the internal structure schematic view of X-ray tube in the utility model discloses a ray source device.

[0030] Mark explanation: 100-X ray tube, 200-box, 202-side plate, 300-control unit, 400-ray tube shell, 401-mounting flange, 402-outer shell, 403-inner shell, 4031-extension, 4032-ring main body, 4033-tube body mounting flange, 504-window shield, 5040-ray hole, 5041-first side wall, 5042-second side wall, 600-heat dissipation unit, 601-inlet pipe, 602-outlet pipe,

[0031] 1-tube body, 10-lumen, 11-first tube body, 111-thinning groove, 12-second tube body, 13-ray outlet, 131-first edge, 132-second edge, 14-tube body mounting structure, 2-positive electrode assembly, 21-positive electrode target, 3-negative electrode assembly, 31-electron emitter, 4-window sheet. DETAILED DESCRIPTION

[0032] The embodiments of the utility model are described in detail below, the examples of the embodiments are shown in the drawings, wherein same or similar reference signs represent same or similar elements or elements with same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, and are intended to explain the utility model, and cannot be understood as the limitation of the utility model.

[0033] Embodiment of the utility model: as Figures 1-6 Illustrated, disclose a kind of ray source device, including X ray tube 100, box 200 and control unit 300;The X ray tube 100 has the tube body 1 of installation fixed to the box 200;The control unit 300 is set to the box 200;

[0034] The box 200 is provided with the box mounting hole compatible with the tube body 1, after the tube body 1 is installed and fixed, at least part of the tube body 1 extends in the box 200, the tube body 1 extending in the box 200 is provided with tube body mounting structure 14, and the tube body mounting structure 14 is fixed to the box 200.

[0035] The tube body 1 has vacuum sealed lumen 10, the tube body 1 includes first tube body 11 and second tube body 12, the lumen 10 is formed by the sealed butt joint of the first tube body 11 and the second tube body 12, the first tube body 11 is metal piece, and the tube body mounting structure 14 is arranged in the first tube body 11, after the tube body 1 is installed, at least part of the first tube body 11 is located outside the box 200.

[0036] The tube body 1 of the embodiment comprises a first tube body 11 of metal, and the first tube body 11 is of metal material, so that the tube body mounting structure 14 can be conveniently arranged on the first tube body 11, and the X-ray tube is fixed on the box body 200 through the tube body mounting structure 14, which facilitates assembly and makes the assembly more firm.

[0037] It can be understood that the tube body mounting structure 14 is also of metal material, and the tube body mounting structure 14 can be integrally formed on the first tube body 11. Of course, since the first tube body 11 is a metal piece, the tube body mounting structure 14 can also be connected and fixed to the first tube body 11 by welding.

[0038] The tube body mounting structure 14 is arranged in a ring shape outside the first tube body 11, and the ray source device also has a ray tube shell 400, which comprises a mounting flange 401 and an outer shell 402 arranged on the mounting flange 401. The outer shell 402 covers the first tube body 11, and the mounting flange 401 has a flange positioning hole, and the tube body mounting structure 14 is positioned to the flange positioning hole.

[0039] It can be understood that the ray source device also has a shielding assembly, which comprises a first shielding ring arranged between the outer shell 402 and the first tube body 11. The first shielding ring covers the first tube body 11, and the first shielding ring is positioned and supported in the outer shell 402. The shielding assembly is generally a lead ring, which can effectively shield radiation.

[0040] The ray tube shell 400 also comprises an inner shell 403, which covers the second tube body 12. The inner shell 403 is fixed to the box body 200, and the box body 200 has a side plate 202. The box body mounting hole is arranged on the side plate 202. After the X-ray tube 100 is installed and fixed, the first tube body 11 and the second tube body 12 are located inside and outside the box body 200 respectively, and the outer shell 402 and the inner shell 403 are fixed and installed on the opposite sides of the side plate 202 respectively.

[0041] The inner shell 403 covers the second tube body 12 to protect the second tube body 12. The inner shell 403 is also fixed on the side plate 202 of the box body 200, and is located on the two sides of the side plate 202 together with the outer shell 402. The side plate 202 of the box body 200 provides support for the ray tube shell 400.

[0042] In order to better realize the installation and fixation of the inner shell 403, the inner shell 403 has an extension part 4031 extending in the box installation hole, an annular main body 4032 circumferentially surrounding the second pipe body 12, and a pipe body installation flange 4033 sleeved outside the annular main body 4032 and used for installation and fixation with the side plate 202, and the extension part 4031 is arranged at the end of the annular main body 4032.

[0043] The extension part 4031 is arranged to extend and position part of the inner shell 403 in the box installation hole, so as to enhance the installation stability of the inner shell 403, more stably install and fix the inner shell 403 with the box 200, and facilitate the installation and fixation of the inner shell 403 in the box 200. The extension part 4031 can play a role of pre-positioning.

[0044] The annular main body 4032 covers the side of the second pipe body 12, and the extension part 4031 is located at the end of the annular main body 4032. After positioning by the extension part 4031, the pipe body installation flange 4033 is used to complete the installation and fixation with the side plate 202, and the pipe body installation flange 4033 is sleeved outside the annular main body 4032.

[0045] The shielding assembly further comprises a second shielding ring positioned in the annular main body 4032 and an end shielding ring arranged at the end of the second shielding ring away from the side plate 202. The end shielding ring seals the end opening of the second shielding ring to form a shielding structure together with the second shielding ring and cover the second pipe body 12.

[0046] Part of the end shielding ring extends into and is positioned in the second shielding ring.

[0047] The shielding assembly can improve the safety performance of the X-ray source. The shielding assembly can effectively absorb or reflect X-rays, thereby reducing the influence of radiation leakage. As materials for manufacturing such a shielding assembly, metals or compounds having radiation absorption performance such as lead, tungsten, bismuth, etc. can be listed.

[0048] The first shielding ring is provided with a shielding ring window opposite the position of the ray outlet 13.

[0049] The shielding assembly further has a window shielding part 504 located at the position of the shielding ring window. The window shielding part 504 is provided with a ray perforation 5040 opposite the position of the ray outlet 13. The ray perforation 5040 has oppositely arranged first and second side walls 5041 and 5042. The plane where the first side wall 5041 is located is approximately perpendicular to the plane where the second side wall 5042 is located.

[0050] The window shield 504 is actually part of the collimator, which is aligned with the X-ray tube's exit 13 to organize the X-ray beam emitted from the X-ray tube into a fan shape.

[0051] The first sidewall 5041 and the second sidewall 5042 provide guidance for the X-rays after they are emitted. The included angle between the first sidewall 5041 and the second sidewall 5042 is generally the maximum emission angle of the generated X-rays. This way, the emission angle of the generated X-rays will not be affected by the constraints of the window shield 504.

[0052] The radiation source device also includes a heat dissipation unit 600, which comprises an inlet pipe 601 and an outlet pipe 602. The inlet pipe 601 and the outlet pipe 602 are arranged side by side and each has a bent pipe structure. The bent pipe structure includes a first extension section extending along the axial direction of the first pipe body 11 and a second extension section extending along the radial direction of the first pipe body 11. The side-by-side arrangement of the inlet pipe 601 and the outlet pipe 602 facilitates installation, and the bent pipe arrangement saves more space, making the overall size of the radiation source device more compact.

[0053] The X-ray source device also includes a control unit 300, which is housed in the enclosure 200. The control unit includes a voltage drive module, a filament control module, and a signal feedback module, all electrically connected to the high-voltage generator. The voltage drive module and the filament control module provide the voltage drive and filament current drive required for the X-ray tube to operate, respectively. The signal feedback module receives the high-voltage and positive current signals from the X-ray tube to monitor the stability of the high-voltage and positive current.

[0054] This utility model also discloses a detection device, including a device frame and a radiation source device disposed on the device frame, wherein the radiation source device is the radiation source device described above.

[0055] The X-ray tube mentioned in this embodiment, such as Figures 5-6 As shown, the assembly includes a tube body 1, a positive electrode assembly 2, a negative electrode assembly 3, and a window plate 4. The tube body 1 is a hollow shell with a cavity 10 inside for creating a vacuum environment. The tube body 1 supports the negative electrode assembly 3 and the positive electrode assembly 2, and serves to provide electrical insulation and vacuum sealing between the negative electrode assembly 3 and the positive electrode assembly 2.

[0056] The tube body 1 includes a first tube body 11 and a second tube body 12, and the cavity 10 is formed by sealing the first tube body 11 and the second tube body 12. The first tube body 11 is a metal component, specifically, the first tube body 11 is a copper tube. The second tube body 12 is a glass component; the second tube body 12 is supported by glass made of insulating material, specifically, it can be electronic glass or ceramic.

[0057] likeFigure 6 As shown, the negative electrode assembly 3 is arranged in the second tube body 12 and includes an electron emitter 31 for emitting an electron beam, and the positive electrode assembly 2 is arranged in the first tube body 11 and includes a positive electrode target 21; in a specific embodiment, the positive electrode target 21 can be a tungsten target, the electron beam emitted by the electron emitter 31 of the negative electrode assembly 3 is accelerated under the action of an accelerating electric field formed in the X-ray tube and forms a focused electron beam, the focused electron beam bombards the positive electrode target 21 to generate diffuse X-rays.

[0058] The tube body 1 is provided with a ray outlet 13 penetrating the tube wall of the tube body 1 and communicating with the tube cavity 10, and the diffuse X-rays generated are emitted outward through the ray outlet 13; in the embodiment, the ray outlet 13 is arranged in the first tube body 11 and communicates with the tube cavity 10, and the ray outlet 13 is opposite to the positive electrode target 21 in position; the ray outlet 13 is opposite to the positive electrode target 21 in the radial direction of the first tube body 11, so that the diffuse X-rays generated by the positive electrode target 21 bombarded by the electron beam can be emitted outward in the radial direction of the first tube body 11.

[0059] It can be understood that the X-ray tube 100 also has a window sheet 4 arranged in the first tube body 11 and sealing the ray outlet 13; in the prior art, the window sheet 4 is generally made of beryllium material, also known as a beryllium window; the window sheet 4 has permeability while sealing the tube cavity 10, and can allow X-rays to be emitted outward. It can be understood that the material and manufacturing of the window sheet 4 are both prior art, and the above-mentioned limitations only provide a specific embodiment and do not make specific limitations.

[0060] In the prior art, the ray outlet 13 is generally directly arranged on the glass tube body, and the opening size of the ray outlet 13 is limited by the glass tube body; if the opening size is increased, a larger radius circle needs to be formed on the glass tube body, which will affect the stability of the tube body. It can be understood that when the size of the tube body is large enough, a larger size ray outlet 13 can also be arranged; in this discussion, for a tube body with a certain radius size requirement, the opening size of the ray outlet is limited. If the opening size of the ray outlet is limited, the angle of the X-rays emitted outward will also be limited, so that some special needs cannot be met.

[0061] In the embodiment, the tube body 1 is arranged as two parts of the first tube body 11 made of metal material and the second tube body 12 made of glass material, and the ray outlet 13 is arranged on the first tube body 11 made of metal material; since the first tube body 11 is made of metal material, the size and shape of the ray outlet 13 arranged on the first tube body 11 are not limited too much, and the size of the ray outlet 13 can be larger, so that the X-rays formed can be emitted outward at a wider angle, which can meet more needs.

[0062] In the embodiment, the first tube body 11 is a copper tube. The copper tube has better heat dissipation, so that the heat generated by electron bombardment can be rapidly diffused outward, thereby ensuring stable operation of the device. In addition, the copper tube can facilitate the arrangement of the ray outlet 13. The size and shape of the ray outlet 13 can be smaller, and different sizes and shapes of the ray outlet 13 can be arranged according to actual needs, thereby forming different scanning rays.

[0063] The second tube body 12 is generally made of glass. The first tube body 11 and the second tube body 12 are butted to form a sealed cavity. In order to facilitate the butt joint of the first tube body 11 and the second tube body 12, a solder layer is arranged between the two when they are sealed and connected. The solder layer is commonly made of lead-based solder (such as solder containing 60% lead and 40% tin) or silver-based solder (such as silver-copper alloy). It can be understood that a corresponding flux (such as rosin, zinc chloride solution, etc.) is also needed during welding. It should be noted that the welding of the copper tube and the glass tube is realized by existing means. The above example is only an embodiment to fully describe the scheme and is not limited in specific.

[0064] In specific embodiments, the ray outlet 13 has a length direction and a width direction, and the size of the length direction is greater than the size of the width direction. The size of the length direction determines the maximum angle of the X-ray out of the device. The specific shape of the ray outlet 13 can be rectangular, oval, or long-waisted. Of course, in other embodiments, the ray outlet 13 can also be irregular.

[0065] Specifically, the first tube body 11 is in the shape of a column as a whole. The first tube body 11 is provided with a thinning groove 111. The thinning groove 111 is concave from the outer wall of the first tube body 11 to the center of the first tube body 11 in the radial direction, so as to thin part of the first tube body 11. The ray outlet 13 is located at the bottom of the thinning groove 111, so that the ray outlet 13 is closer to the positive target 21.

[0066] It can be understood that the positive target 21 is generally arranged at the central axis position of the first tube body 11. The X-ray generated by the positive target 21 after being bombarded by the electron beam is emitted along the radial direction of the first tube body 11 to the ray outlet 13. The opening size of the ray outlet 13 and the distance between the ray outlet 13 and the positive target 21 determine the angle of the X-ray out of the device. In principle, the larger the opening size of the ray outlet 13, the larger the scattering angle of the generated X-ray, and the larger the scanning area. The closer the distance between the ray outlet 13 and the positive target 21, the larger the angle of the generated X-ray out of the device.

[0067] The above embodiment requires the wall of the first tube 11 to have a certain thickness, so that a thinning groove 111 can be formed on the first tube 11. The thinning groove 111 actually thins the wall of the first tube 11, thereby bringing the X-ray outlet 13 provided on the first tube 11 closer to the positive electrode target 21. In this embodiment, the X-ray outlet 13 is located at the bottom of the thinning groove 111, thus enabling it to be closer to the positive electrode target 21. Given a fixed opening size of the X-ray outlet 13, the closer the X-ray outlet 13 is to the positive electrode target 21, the greater the exit angle of the X-rays emitted from the X-ray outlet 13.

[0068] Specifically, the bottom of the thinning groove 111 is generally planar, and the ray outlet 13 is generally elliptical. Of course, in other embodiments, the bottom of the thinning groove 111 can also be arc-shaped, and the ray outlet 13 is correspondingly arc-shaped and set at the bottom of the thinning groove 111.

[0069] like Figure 4 As shown, the positive electrode target 21 is located at the center of the first tube body 11. The ray outlet 13 has a first edge 131 and a second edge 132 along its length. The line connecting the center of the positive electrode target 21 and the center of the first edge 131 is L1, and the line connecting the center of the positive electrode target 21 and the center of the second edge 132 is L2. The included angle between L1 and L2 is 80°~95°.

[0070] The first edge 131 and the second edge 132 are both arc-shaped, with their centers located at the apex of the arc. It can be understood that L1 and L2 extend radially along the first tube body 11. The angle between L1 and L2 is the angle at which the generated X-rays exit. The angle between L1 and L2 is set between 80° and 95°, thus providing a wider angle for the X-rays to exit from the X-ray outlet 13, resulting in a larger scanning area to meet different application requirements.

[0071] It is understood that the aforementioned X-ray tube specifically refers to a device for generating X-rays, comprising a negative electrode and a positive electrode. By applying a high voltage, electrons are accelerated from the negative electrode and collide with the positive electrode to generate X-rays. To generate a sufficiently high voltage to accelerate electrons, the X-ray tube needs to be connected to a high-voltage generator. This high-voltage generator is capable of generating and regulating the required high voltage and supplying it between the positive and negative electrodes of the X-ray tube. In this way, a sufficiently large electric field can be formed inside the X-ray tube to accelerate electrons and generate X-rays.

[0072] In the working process of the X-ray tube, the electron beam emitted by the electron emitter 31 of the negative electrode assembly 3 is accelerated by the accelerating electric field in the X-ray tube and forms a focused electron beam, the focused electron beam bombards the positive electrode target 21 to generate diffused X-rays, and the diffused X-rays are emitted outward through the X-ray outlet 13.

[0073] The above describes the structure, features and effects of the present application according to the embodiments shown in the drawings, and the above is only the preferred embodiment of the present application, but the present application is not limited to the embodiments shown in the drawings, any changes or modifications made according to the concept of the present application, or equivalent embodiments with equivalent changes, as long as they are within the scope of the present application.

Claims

1. A radiation source device, characterized in that: It includes a housing, an X-ray tube, and a control unit; the X-ray tube has a tube body that is mounted and fixed to the housing; the control unit is disposed in the housing; The box body is provided with a box body mounting hole that is adapted to the tube body. After the tube body is installed and fixed, at least part of the tube body extends outside the box body. The tube body extending outside the box body is provided with a tube body mounting structure, and the tube body mounting structure is fixed to the box body. The tube body has a vacuum-sealed cavity. The tube body includes a first tube body and a second tube body. The cavity is formed by the sealed connection of the first tube body and the second tube body. The first tube body is a metal part. The tube body mounting structure is disposed on the first tube body. After the tube body is installed, at least part of the first tube body is located outside the box body.

2. The radiation source device according to claim 1, characterized in that: The tube mounting structure is arranged in a ring around the first tube. The radiation source device also has a radiation tube housing, which includes a mounting flange and an outer housing disposed on the mounting flange. The outer housing covers the first tube. The mounting flange has a flange positioning hole, and the tube mounting structure is positioned to the flange positioning hole.

3. The radiation source device according to claim 2, characterized in that: The radiation source device also has a shielding assembly, which includes a first shielding ring disposed between the outer shell and the first tube body. The first shielding ring covers the first tube body and is positioned and supported within the outer shell body.

4. The radiation source device according to claim 3, characterized in that: The X-ray tube housing also includes an inner housing, which covers the second tube body and is fixed to the box body. The box body has a side plate, and the box body mounting holes are provided on the side plate. After the X-ray tube is installed and fixed, the first tube body and the second tube body are located inside and outside the box body, respectively. The outer shell and the inner housing are fixedly installed on opposite sides of the side plate.

5. The radiation source device according to claim 4, characterized in that: The inner housing has an extension portion extending into the mounting hole of the housing, an annular body surrounding the second tube in the circumferential direction, and a tube mounting flange sleeved on the annular body for mounting and fixing with the side plate. The extension portion is located at the end of the annular body.

6. The radiation source device according to claim 5, characterized in that: The shielding assembly further includes a second shielding ring and an end shielding ring positioned within the annular body. The end shielding ring is disposed at the end of the second shielding ring away from the side plate. The end shielding ring seals the end opening of the second shielding ring to form a shielding structure covering the body of the second tube together with the second shielding ring. Part of the end shielding ring extends into and is positioned within the second shielding ring.

7. The radiation source device according to claim 6, characterized in that: A shielding ring window is provided on the first shielding ring at a position opposite to the position of the radiation outlet; The shielding assembly also has a window shield located at the window position of the shielding ring. The window shield is provided with a ray perforation. The ray perforation is opposite to the ray outlet position. The ray perforation has a first sidewall and a second sidewall arranged opposite to each other. The plane where the first sidewall is located is approximately perpendicular to the plane where the second sidewall is located.

8. The radiation source device according to claim 1, characterized in that: The radiation source device also has a radiation tube housing and a heat dissipation unit. The radiation tube housing is covered by the first tube body. The heat dissipation unit includes an inlet pipe and an outlet pipe. The inlet pipe and the outlet pipe are arranged side by side and each has a bent pipe structure. The bent pipe structure includes a first extension section extending along the axial direction of the first tube body and a second extension section extending along the radial direction of the first tube body.

9. The radiation source device according to claim 1, characterized in that: The X-ray tube also includes: The negative electrode assembly, disposed within the second tube, includes an electron emission element; A positive electrode assembly, disposed within the first tube, includes a positive electrode target; A radiation outlet is disposed in the first tube and communicates with the tube cavity. The radiation outlet is opened along the radial direction of the first tube and is opposite to the position of the positive electrode target. A window is disposed in the first tube and seals the ray outlet to maintain a vacuum in the tube cavity.

10. A testing device, characterized in that... It includes an equipment rack and a radiation source device disposed on the equipment rack, wherein the radiation source device is the radiation source device as described in any one of claims 1 to 9.

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