Radiation source device and detection apparatus

Abstract

The application relates to the technical field of detection equipment, and discloses a ray source device and detection equipment. The ray source device comprises a ray tube shell and a ray generating assembly arranged in the interior of the ray tube shell. The ray tube shell comprises a first side area, a middle area and a second side area in sequence along the length direction, the bottoms of the three areas are communicated with each other to form a continuous bottom surface, the top height of the middle area is lower than the top height of the two side areas, and the ray tube shell as a whole has a concave character-shaped profile. A ray window is arranged on the outer wall of the middle area, the ray window is communicated with the internal cavity of the middle area, the ray generating assembly comprises a ball tube assembly, the anode target surface of the ball tube assembly is arranged in the middle area and is arranged opposite to the ray window. Through the above structure, the ray emitting position of the ray source device is located in a relatively low area, the distance between the ray and the detector is increased, the ray irradiation range is expanded, and the imaging effect is improved and the imaging field of view is improved.

Description

Technical Field

[0001] This application relates to the field of detection equipment technology, and further to a radiation source device and detection equipment. Background Technology

[0002] Existing X-ray source devices typically employ a top-mounted X-ray window structure, allowing X-rays to exit through the upper part of the housing. However, when the X-ray window is located at the top of the housing, the divergence angle of the X-rays is limited, and the distance to the detector is small, resulting in a limited X-ray irradiation area and a narrow imaging range, making it difficult to meet the requirements of large-area detection or high-resolution imaging. Utility Model Content

[0003] To address the aforementioned technical problems, the purpose of this application is to provide a radiation source device and detection equipment that can solve the problems in the prior art and facilitate the realization of large-area radiation imaging.

[0004] To achieve the above objectives, this application provides a radiation source device, comprising: a radiation tube housing and a radiation generating assembly disposed inside the radiation tube housing;

[0005] The ray tube housing includes a first side area, a middle area, and a second side area along its length. The bottoms of the first side area, the middle area, and the second side area are interconnected to form a continuous bottom surface. The top height of the middle area is lower than the top height of both the first side area and the second side area, so that the ray tube housing has a concave-shaped profile.

[0006] The outer wall of the intermediate zone is provided with a ray window, which communicates with the internal cavity of the intermediate zone; the ray generating assembly includes an X-ray tube assembly, the anode target surface of which is disposed in the intermediate zone and opposite to the ray window, so that the ray is emitted outward through the ray window.

[0007] In some embodiments, the X-ray tube assembly spans the first side region and the second side region along its length, the first side region being disposed corresponding to the anode end of the X-ray tube assembly, and the second side region being disposed corresponding to the cathode end of the X-ray tube assembly; the X-ray generating assembly further includes an anode plate assembly disposed in the first side region and electrically connected to the anode end of the X-ray tube assembly.

[0008] In some embodiments, the X-ray generating assembly includes a power drive assembly disposed in the second side region and electrically connected to the cathode end of the X-ray tube assembly for providing an operating voltage to the X-ray tube assembly.

[0009] In some embodiments, the power drive assembly includes a voltage multiplier circuit assembly and a filament transformer assembly, the voltage multiplier circuit assembly being disposed inside the housing of the first side region; the voltage multiplier circuit assembly and the filament transformer assembly are distributed along the height direction, wherein the voltage multiplier circuit assembly is higher than the filament transformer assembly, and the filament transformer assembly is closer to the cathode end of the X-ray tube assembly relative to the voltage multiplier circuit assembly.

[0010] In some embodiments, the radiation source device further includes a cooling assembly, which is at least partially disposed inside the radiation tube housing, for oil cooling or liquid cooling of the radiation generating assembly.

[0011] In some embodiments, the cooling assembly includes an oil pump disposed at the bottom of the ray tube housing for driving insulating oil to circulate inside the ray tube housing. A preset gap is provided between the peripheral wall of the ray tube housing and the ray generating assembly to form an oil passage inside the ray source device, so that the insulating oil can carry away the working heat during circulation. The oil passage is at least connected between the cathode and anode ends of the oil pipe assembly.

[0012] In some embodiments, the ray tube housing is a split structure, including a first housing located at the bottom and a second housing connected to the opening of the first housing, the first housing and the second housing forming a mounting cavity for accommodating the ray generating assembly;

[0013] The second housing has a highly undulating shape along its length, thereby forming the outline of the first side area, the middle area, and the second side area, such that the top of the middle area is lower than the tops of the first side area and the second side area, to form an irregular structure suitable for accommodating the anode target surface.

[0014] In some embodiments, the opening of the first housing is provided with an annular first positioning flange, and the opening of the second housing is provided with an annular second positioning flange. The first positioning flange and the second positioning flange are respectively provided with a plurality of connecting holes. In the installed state, the first positioning flange and the second positioning flange are fitted together, and the first housing and the second housing are fastened together by fasteners passing through the connecting holes of the first positioning flange and the connecting holes of the second positioning flange at the same time.

[0015] Another aspect of this application also provides a testing device, comprising:

[0016] The radiation source device in any of the above embodiments;

[0017] detector;

[0018] The frame structure has the detector and the radiation source device respectively located at corresponding positions on the frame structure, wherein the detector and the radiation window are arranged opposite to each other for receiving radiation imaging signals.

[0019] In some embodiments, the detector is disposed at the top inner side of the frame structure along the height direction, and the radiation source device is disposed at the bottom inner side of the frame structure along the height direction; the frame structure is an O-shaped arm structure or a C-shaped arm structure, and the frame structure has a gap in the center for the object to be detected to pass through.

[0020] Compared with the prior art, this application has at least the following beneficial effects:

[0021] By placing the X-ray window in the middle of the X-ray tube housing and forming a U-shaped profile at the top of the housing, the X-ray emission direction is relatively downward, effectively increasing the distance between the X-ray and the detector, expanding the irradiation area, and improving the problem of limited imaging range. At the same time, this structure maintains the overall strength of the housing and the compactness of the internal component arrangement, achieving better imaging results without increasing the size of the device. Attached Figure Description

[0022] The preferred embodiments will now be described in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages, and implementation methods of this application.

[0023] Figure 1 This is a schematic diagram of the overall structure of the radiation source device in one embodiment of this application;

[0024] Figure 2 This is a cross-sectional structural diagram of a radiation source device in one embodiment of this application;

[0025] Figure 3 This is a schematic diagram of the exploded structure of a radiation source device in one embodiment of this application;

[0026] Figure 4 This is a structural disassembly diagram of the ray tube housing in one embodiment of this application;

[0027] Figure 5 This is a schematic diagram of the structure of the detection device in one embodiment of this application.

[0028] Reference numerals: X-ray tube housing 1; First side area 101; Second side area 102; Middle area 103; First housing 11; First positioning flange 111; Second housing 12; Second positioning flange 121; Connecting hole 130; X-ray window 2; X-ray tube assembly 3; Anode target surface 30; Anode end 31; Cathode end 32; Anode board assembly 4; Voltage multiplier circuit assembly 51; Filament transformer assembly 52; Insulation layer 6; Cooling assembly 7; Detector 8; Frame structure 9. Detailed Implementation

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the specific implementation methods of this application will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without creative effort.

[0030] To keep the drawings concise, each drawing only schematically shows the parts relevant to the application; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" can mean not only "only one" but also "more than one."

[0031] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0032] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not 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 application.

[0034] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] X-ray source devices are widely used in industrial flaw detection, medical imaging, and materials testing. Their basic structure typically includes a X-ray tube housing and a radiation-generating assembly housed within it. The X-ray generating assembly uses a high-voltage heated cathode to accelerate electrons, which then bombard the anode target, generating X-rays or other forms of radiation. The generated radiation exits through a radiation window on the housing and, in conjunction with an external detector, enables image imaging or the acquisition of detection results.

[0036] In existing X-ray source devices, the X-ray window is usually located at the top of the X-ray tube housing. The emission direction of the X-ray is usually fixed and biased towards the top of the device. Its divergence angle range is small, which limits the distance between the X-ray and the detector, resulting in a small imaging area and making it difficult to achieve imaging over a large field of view.

[0037] To address the above problems, in one embodiment, reference is made to the appendix to the specification. Figures 1 to 3 This application provides a radiation source device, including a radiation tube housing 1 and a radiation generating assembly disposed inside the radiation tube housing 1. The radiation tube housing 1 has an internal cavity for mounting the radiation generating assembly. The radiation tube housing 1 is divided along its length into a first side region 101, a middle region 103, and a second side region 102. The bottoms of the three regions are interconnected, forming a continuous bottom surface structure, thereby ensuring uniform stress support at the bottom of the entire radiation tube housing 1 when it is installed on a support platform or assembly base.

[0038] More importantly, in this embodiment, the top height of the middle region 103 is significantly lower than the top height of the first side region 101 and the second side region 102, so that the overall shape of the ray tube housing 1 is a U-shaped outline, and the middle region 103 is relatively sunken in the vertical direction.

[0039] The intermediate zone 103 has a ray window 2 on its outer wall, which communicates with the internal cavity of the intermediate zone 103. As a key component in the ray emission path, the ray window 2 is typically made of a material with high transmittance and moderate strength to ensure that the internal rays can be emitted outwards with minimal energy loss. The ray generating assembly includes a X-ray tube assembly 3, which generates rays under high pressure. The anode target surface 30 of the X-ray tube assembly 3 is located within the intermediate zone 103 and is arranged opposite to the ray window 2, ensuring that the rays can be emitted from the housing through the ray window 2 in a predetermined direction during operation.

[0040] Compared with the designs commonly found in existing technologies, traditional X-ray source devices often place the X-ray window 2 at the upper end of the housing. While this facilitates the direct propagation of X-rays, it also results in a shorter distance between the X-ray source and the external detector 8, thus limiting the irradiation area and narrowing the imaging range, which cannot meet the requirements for large field of view or high-precision imaging.

[0041] In this embodiment, the ray window 2 is located in the middle area 103 and is situated below the ray tube housing 1. (See attached diagram.) Figure 5 By lowering the height of the ray emission point, the propagation distance of the ray to detector 8 after emission is significantly increased, thereby obtaining a larger irradiation coverage area, expanding the imageable area, and enabling the ray source device to form a more reasonable ray path without increasing the overall size of the device, thus improving the geometric imaging relationship of the system.

[0042] With the above configuration, the focal position of the X-ray source is in a sunken state relative to the top of the X-ray tube housing 1. Since the X-ray window 2 is located in the middle of the low-lying position of the X-ray tube housing 1, the propagation distance of the X-ray after emission to the external detector 8 (such as a flat panel detector or image receiving plate) is significantly increased compared with the traditional structure, which expands the imaging coverage area and is suitable for image acquisition scenarios with a larger field of view.

[0043] In one embodiment, combined Figure 1 and Figure 2 The X-ray tube assembly 3 spans the first side region 101 and the second side region 102 along its length. The anode end 31 of the X-ray tube assembly 3 is located closer to the first side region 101, and the cathode end 32 is located closer to the second side region 102, thus forming a spatial arrangement that spans both sides within the X-ray tube housing 1. This structural arrangement results in a more balanced distribution of the center of gravity of the X-ray tube assembly 3, effectively reducing the impact of localized stress concentration on the housing.

[0044] Understandably, the radiation generating assembly also includes an anode plate assembly 4, which is disposed inside the first side region 101 and electrically connected to the anode end 31 of the X-ray tube assembly 3. The anode plate assembly 4 is provided with a high-voltage conductive path inside, which is used to stably transmit high-voltage electrical energy to the anode of the X-ray tube to drive the electron beam to generate high-energy radiation on the anode target surface 30.

[0045] Since the anode plate assembly 4 is centrally located in the first side area 101, the internal space of the X-ray tube housing 1 can be divided into zones according to different functional modules. Through this regional arrangement, the electrical components of the anode end 31 and the control or voltage multiplier unit of the cathode end 32 can be arranged in different spatial areas, making the internal structure of the X-ray source device more regular and the maintenance and assembly operations more convenient.

[0046] Optionally, the transition section between the first side zone 101 and the middle zone 103 is provided with reinforcing ribs or flow guide baffles, which can strengthen the shell structure strength of this area to a certain extent, while guiding the flow path of the internal cooling medium and improving the overall heat dissipation efficiency of the system.

[0047] In practical use, the anode plate assembly 4 and the X-ray tube assembly 3 are closely matched. Their electrical connection part is usually located in the sealed connection area of ​​the anode end 31. To ensure the reliability of the connection, the anode plate assembly 4 can be electrically connected to the X-ray tube assembly 3 through conductive posts or high-voltage plugs. The connection part can be made of high-temperature resistant and arc-resistant materials to prevent insulation damage under high-voltage breakdown conditions.

[0048] In one embodiment, the X-ray generating assembly further includes a power drive assembly disposed in the second side region 102 and electrically connected to the cathode end 32 of the X-ray tube assembly 3. The power drive assembly is used to provide high-voltage operating power to the X-ray tube assembly 3 and power supply for electron emission, so that the power drive assembly can form a direct electrical connection path with the cathode end 32 of the X-ray tube assembly 3, reducing the length of the intermediate transmission line, thereby effectively reducing energy loss and parasitic inductance effect and improving the stability of current response.

[0049] Understandably, since the second side zone 102 is usually located on the electrical negative side in the X-ray tube structure, the insulation distance between it and the outer shell can be arranged to be smaller, and it is convenient to centrally configure the power supply module, filament transformer and its auxiliary control unit, making the overall structural layout more compact.

[0050] In a preferred embodiment, the power supply drive assembly may include a filament heating module, which provides heating current to the filament of the X-ray tube assembly 3 to achieve thermionic emission at the cathode end 32. Filament heating generates a stable and uniform electron flow on the cathode emitting surface, thereby ensuring the continuity of X-ray output intensity and the controllability of imaging quality.

[0051] In other alternative embodiments, the power drive assembly can also be adjusted according to the type of X-ray tube. For example, when the X-ray tube assembly 3 adopts a cold cathode or field emission electron emission structure, the power drive assembly can be replaced with a field emission drive unit to provide the required operating current or bias electric field to the electron emission unit, thereby achieving electron emission without relying on filament heating, reducing the thermal load of the system, and reducing the thermal impact of high-temperature components on the X-ray tube housing 1.

[0052] Furthermore, the arrangement of the power drive components in the second side region 102 also contributes to the optimization of the overall heat dissipation path. Since the second side region 102 is located at the end of the ray tube housing 1, its outer wall usually has a large convection heat transfer area. By concentrating the power drive components in this area, the heat-generating elements can directly contact the housing or conduct heat to the housing surface through the heat-conducting substrate, thereby achieving natural heat dissipation or forced heat dissipation in conjunction with an external cooling device.

[0053] In one embodiment, based on the above embodiments, the power supply drive assembly includes a voltage multiplier circuit assembly 51 and a filament transformer assembly 52. ​​The voltage multiplier circuit assembly 51 is used to double and rectify the externally input high-voltage electrical energy to provide a stable potential for the high-voltage operation of the X-ray source; the filament transformer assembly 52 is used to provide the required heating electrical energy to the cathode filament of the X-ray tube assembly 3, thereby forming stable thermionic emission conditions inside the X-ray tube.

[0054] Specifically, the voltage multiplier circuit assembly 51 is fixedly disposed on the inner wall of the housing in the second side region 102. The voltage multiplier circuit assembly 51 and the filament transformer assembly 52 are distributed along the height direction, with the voltage multiplier circuit assembly 51 located at a higher position and the filament transformer assembly 52 located at a lower position. This layered arrangement can effectively utilize the internal space of the housing while reducing the risk of electrical interference.

[0055] Please refer to the attached document. Figure 2 Since the voltage multiplier circuit assembly 51 generates a high voltage during operation, it is isolated from the inner wall of the X-ray tube housing 1 by an insulating layer 6 to ensure electrical safety. The filament transformer assembly 52 is positioned relative to the voltage multiplier circuit assembly 51 near the cathode terminal 32 of the X-ray tube assembly 3, allowing it to supply power to the cathode terminal 32 with the shortest possible wire distance, thereby reducing energy loss and electromagnetic interference during transmission.

[0056] In practical applications, the voltage multiplier circuit assembly 51 may include multi-stage rectifier units and filter capacitor banks, which are connected in sequence to form a voltage multiplier output structure; the filament transformer assembly 52 may adopt a toroidal iron core winding structure to improve magnetic flux utilization and reduce volume. A metal shielding layer or insulating partition may be provided between the voltage multiplier circuit assembly 51 and the filament transformer assembly 52, which can prevent the risk of breakdown between the high-voltage and low-voltage areas, and also play an electromagnetic shielding role, ensuring that the X-ray tube assembly 3 has stable signal and low noise during high-precision imaging.

[0057] In addition, in some embodiments, a heat dissipation channel or heat dissipation coating may be provided at the housing location where the voltage multiplier circuit component 51 is located, so that the component maintains a low temperature rise when operating at high voltage for a long time.

[0058] In one embodiment, the radiation source device further includes a cooling component 7, which is at least partially disposed inside the radiation tube housing 1, for oil cooling or liquid cooling of the radiation generating component.

[0059] Understandably, when the X-ray source is operating under high voltage, the internal components, including the X-ray tube assembly 3, voltage multiplier circuit assembly 51, and filament transformer assembly 52, will continuously generate heat. If heat cannot be dissipated effectively and in a timely manner, it can easily lead to a decrease in electron emission efficiency, a shortened component lifespan, or even insulation breakdown. Therefore, this embodiment uses a cooling assembly 7 inside the X-ray tube housing 1 to create a directional heat dissipation path in localized high-temperature areas, thereby achieving a stable and efficient temperature control effect.

[0060] The cooling component 7 can employ either an oil-cooled structure or a liquid-cooled circulation structure, depending on the application environment and installation space. Preferably, the cooling component 7 includes a cooling channel disposed inside the housing and a fluid cavity communicating with the cooling channel. The cooling medium circulates between the fluid cavity and the cooling channel to remove the heat generated by the X-ray generating component during operation. The cooling channel can extend along the length or height of the X-ray tube housing 1, so that the heat exchange surface covers the main heat-generating unit area, especially the area near the X-ray tube assembly 3 and the voltage multiplier circuit assembly 51, in order to achieve a good cooling effect without increasing the housing volume.

[0061] In one embodiment, the cooling assembly 7 includes an external heat exchange unit connected to the circulating oil circuit inside the housing. An external air or water cooling module can cool the returned high-temperature oil or coolant, thereby forming a stable circulating cooling system. This allows the X-ray source device to maintain a dynamic balance of internal temperature under long-term high-power operation, preventing the X-ray tube assembly 3 from overheating and causing focal drift or electron beam deflection, thus effectively ensuring the stability of the X-ray emission direction and intensity.

[0062] Furthermore, the cooling assembly 7 includes an oil pump located at the bottom of the ray tube housing 1, which drives the insulating oil to form a circulating flow path inside the ray tube housing 1.

[0063] Specifically, a predetermined gap is provided between the peripheral wall of the X-ray tube housing 1 and the X-ray generating assembly. This gap forms a flow channel for the insulating oil, thereby creating a closed oil circuit inside the X-ray source device. During circulation, the insulating oil can fully cover the high-heat areas of the X-ray generating assembly, such as the anode target surface 30, thereby promptly removing the heat generated during long-term operation of the X-ray source.

[0064] Typically, the oil circuit connects at least the negative end 32 and the positive end 31 of the X-ray tube assembly 3, enabling the insulating oil to form an effective heat exchange circuit between the high-temperature and low-temperature parts. Driven continuously by the oil pump, the insulating oil flows along a predetermined path within the X-ray tube housing 1. This provides uniform cooling to the internal components, preventing localized overheating that could lead to unstable X-ray output or decreased insulation performance. Furthermore, the flowing insulating oil also provides electrical insulation and dielectric strengthening, further enhancing the overall operational safety and reliability of the X-ray tube.

[0065] In one embodiment, see Appendix Figure 3 and Figure 4 The X-ray tube housing 1 adopts a split-type structure design, including a first housing 11 located at the bottom and a second housing 12 connected to the opening of the first housing 11. The first housing 11 and the second housing 12 are enclosed by a sealed connection or a screw-in structure to form a mounting cavity for accommodating the X-ray generating components. This split-type structural arrangement can significantly improve the assembly convenience and maintenance accessibility of the X-ray source device while ensuring overall sealing and mechanical strength.

[0066] Specifically, during the installation or replacement of the radiation generating component, only the second housing 12 needs to be disassembled to remove and assemble the component, avoiding the disassembly of the entire housing, thereby effectively reducing the complexity and risk of the assembly process.

[0067] As shown in the figure, the second housing 12 forms a highly undulating shape along the length of the ray tube. Its outer surface forms a first side area 101, a middle area 103, and a second side area 102 in the longitudinal direction. The outline of the second housing 12 is optimized according to the internal structure arrangement so that the top height of the middle area 103 is lower than the top height of both the first side area 101 and the second side area 102. Thus, a relatively concave irregular space is formed in the middle of the housing.

[0068] Thus, by lowering the top height of the middle section 103, the overall structural center of gravity of the X-ray tube can be made more balanced, improving the stress and vibration characteristics of the device under high-power operation, thereby enhancing the structural stability of the entire machine. In addition, the first side section 101 and the second side section 102 located on both sides can be provided with relatively thickened structures to strengthen the mechanical support capacity of the overall shell, thereby maintaining heat dissipation efficiency while ensuring structural strength.

[0069] In one embodiment, the opening of the first housing 11 is provided with a circumferentially extending annular first positioning flange 111, and the opening of the second housing 12 is provided with an annular second positioning flange 121 corresponding to the first positioning flange 111. The shapes and sizes of the two are matched to achieve precise positioning and sealing during assembly.

[0070] In this embodiment, the first positioning flange 111 and the second positioning flange 121 are respectively provided with a plurality of connecting holes 130, which are evenly distributed along the circumferential direction. This arrangement can effectively disperse the circumferential force while ensuring the connection strength of the shell, and prevent local stress concentration.

[0071] In the assembled state, the first positioning flange 111 and the second positioning flange 121 are fitted together. A series of fasteners pass sequentially through the connecting holes 130 of the first and second positioning flanges 111 and 121, respectively, thus reliably connecting the two. The fasteners can be bolts, screws, or other fastening elements with axial locking capability. A sealing washer or O-ring can be placed between the two flanges according to sealing requirements to improve the sealing performance of the assembly.

[0072] Through the above structural design, the first housing 11 and the second housing 12 can achieve high-precision assembly and positioning, ensuring the structural stability and sealing reliability of the X-ray tube housing 1 during long-term operation. Because the two are connected by an annular flange, it not only facilitates manufacturing and assembly operations but also maintains a stable geometric fit under high temperature and high pressure environments, avoiding loosening and leakage problems caused by thermal expansion and contraction of the housing or mechanical vibration.

[0073] Furthermore, the structure offers excellent maintainability. When it is necessary to inspect or replace the internal components of the X-ray tube, the second housing 12 can be detached from the first housing 11 simply by removing the fasteners, thereby enabling quick access to the internal components and significantly reducing maintenance time and operational complexity.

[0074] In one embodiment, refer to the appendix to the specification. Figure 5 According to another aspect of this application, this application further provides a detection device for performing X-ray imaging detection of a target. The detection device includes the X-ray source device, detector 8, and frame structure 9 described in any of the above embodiments.

[0075] The X-ray source device and detector 8 are respectively installed at corresponding positions on the frame structure 9, and are arranged correspondingly to form the emission path and reception path of the X-rays in the working state. Among them, the detector 8 is set opposite to the X-ray window 2 of the X-ray source device, and is used to receive the transmission signal and form an imaging signal after the X-rays pass through the object being detected.

[0076] In this embodiment, the frame structure 9 can be designed as a fixed structure or a movable structure depending on the actual usage scenario. For a fixed structure, the X-ray source device and detector 8 are respectively installed at preset fixed ends. By aligning their positions, it is ensured that the emission direction of the X-rays and the receiving direction of the detection surface are on the same imaging axis, thereby guaranteeing the stability and repeatability of the imaging. For a movable structure, for example, the frame structure 9 includes adjustable guide rails or rotating arms, allowing the frame structure 9 to be adjusted in angle or position within a certain range to adapt to different detection scenarios.

[0077] Based on the above structural design, combined with the above text and the appendix to the instruction manual, Figure 1 , Figure 2 Since the X-ray window 2 is located in the middle area 103 of the device, that is, the lower position of the X-ray source device, the X-ray is emitted upward or obliquely upward from the lower position, which helps to increase the distance between the X-ray and the object being measured, expand the imaging field of view, reduce scattering interference, and thus improve the overall imaging quality and signal resolution.

[0078] Furthermore, in one embodiment, the detector 8 is disposed at the top inner side of the frame structure 9 along the height direction, and the X-ray source device is disposed at the bottom inner side of the frame structure 9 along the height direction. The detector 8 and the X-ray source device are arranged vertically opposite each other in the internal space of the frame structure 9, so that the X-ray emitted by the X-ray source device passes through the object being detected from bottom to top and is received by the detector 8 above, thereby forming a complete X-ray imaging path.

[0079] In this way, not only can vertical imaging be achieved in a limited space, improving the imaging stability and alignment accuracy of the system, but also, since the X-ray source device is located inside the frame structure 9, interference or collision with other components outside the frame can be avoided during equipment operation, ensuring the safety and reliability of the equipment when rotating, lifting or moving.

[0080] Furthermore, the X-ray source device in this application adopts a concave X-ray tube housing 1, with the top of the middle region 103 being lower than the top of the side regions, so that the X-ray window 2 and the corresponding anode target surface 30 are located in the concave part of the device as a whole, so that the X-ray emission position is located in the lower region of the device. This allows for an appropriate extension of the imaging distance between the focal point and the detector 8 without increasing the height of the frame structure 9, thereby expanding the coverage of the X-ray beam and improving the imaging field of view and image uniformity.

[0081] Compared to the existing structure that places the X-ray window 2 at the top of the housing, this embodiment optimizes the housing shape and component layout, thereby lowering the focal point position and significantly improving the problem of small imaging area caused by limited focal length. This allows for a larger focal length within a limited size, improving imaging clarity and coverage. It can achieve better imaging performance and operational safety while maintaining a compact device layout.

[0082] The frame structure 9 can be an O-shaped arm structure or a C-shaped arm structure. The O-shaped arm structure has a closed ring frame shape, with high overall rigidity and structural stability; the C-shaped arm structure forms an opening area on one side, which facilitates the object to be detected to enter the imaging area from the side, improving the convenience and flexibility of the detection operation; regardless of the form adopted, the frame structure 9 has a gap in the center to allow the object to be detected to pass through the imaging channel.

[0083] It should be noted that the above embodiments can be freely combined as needed. The above are merely preferred embodiments of this application. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A radiation source device, characterized in that, include: X-ray tube housing and X-ray generating assembly disposed inside the X-ray tube housing; The ray tube housing includes a first side area, a middle area, and a second side area along its length. The bottoms of the first side area, the middle area, and the second side area are interconnected to form a continuous bottom surface. The top height of the middle area is lower than the top height of both the first side area and the second side area, so that the ray tube housing has a concave-shaped profile. The outer wall of the intermediate zone is provided with a ray window, which communicates with the internal cavity of the intermediate zone; the ray generating assembly includes an X-ray tube assembly, the anode target surface of which is disposed in the intermediate zone and opposite to the ray window, so that the ray is emitted outward through the ray window.

2. The radiation source device according to claim 1, characterized in that, The X-ray tube assembly spans the first side region and the second side region along its length. The first side region is configured corresponding to the anode end of the X-ray tube assembly, and the second side region is configured corresponding to the cathode end of the X-ray tube assembly. The radiation generating assembly further includes an anode plate assembly disposed in the first side region and electrically connected to the anode end of the X-ray tube assembly.

3. The radiation source device according to claim 2, characterized in that, The X-ray generating assembly includes a power drive assembly disposed in the second side region and electrically connected to the cathode end of the X-ray tube assembly, for providing operating voltage to the X-ray tube assembly.

4. The radiation source device according to claim 3, characterized in that, The power drive assembly includes a voltage multiplier circuit assembly and a filament transformer assembly. The voltage multiplier circuit assembly is disposed inside the housing of the first side region. The voltage multiplier circuit assembly and the filament transformer assembly are distributed along the height direction, wherein the voltage multiplier circuit assembly is higher than the filament transformer assembly, and the filament transformer assembly is closer to the cathode end of the X-ray tube assembly relative to the voltage multiplier circuit assembly.

5. The radiation source device according to any one of claims 1-4, characterized in that, The radiation source device also includes a cooling component, which is at least partially disposed inside the radiation tube housing and is used to cool the radiation generating component by oil cooling or liquid cooling.

6. The radiation source device according to claim 5, characterized in that, The cooling assembly includes an oil pump located at the bottom of the X-ray tube housing. The oil pump drives insulating oil to circulate within the X-ray tube housing. A preset gap is provided between the peripheral wall of the X-ray tube housing and the X-ray generating assembly to form an oil passage within the X-ray source device, allowing the insulating oil to carry away working heat during circulation. The oil passage is at least connected between the cathode and anode ends of the X-ray tube assembly.

7. The radiation source device according to any one of claims 1-4 and 6, characterized in that, The ray tube housing is a split structure, including a first housing located at the bottom and a second housing connected to the opening of the first housing. The first housing and the second housing together form a mounting cavity for accommodating the ray generating assembly. The second housing has a highly undulating shape along its length, thereby forming the outline of the first side area, the middle area, and the second side area, such that the top of the middle area is lower than the tops of the first side area and the second side area, to form an irregular structure suitable for accommodating the anode target surface.

8. The radiation source device according to claim 7, characterized in that, The first housing has an annular first positioning flange at its opening, and the second housing has an annular second positioning flange at its opening. The first positioning flange and the second positioning flange each have a plurality of connecting holes. In the installed state, the first positioning flange and the second positioning flange fit together and are fastened together by fasteners passing through the connecting holes of the first positioning flange and the connecting holes of the second positioning flange.

9. A testing device, characterized in that, include: The radiation source device according to any one of claims 1-8; detector; The frame structure has the detector and the radiation source device respectively located at corresponding positions on the frame structure, wherein the detector and the radiation window are arranged opposite to each other for receiving radiation imaging signals.

10. The detection device according to claim 9, characterized in that, The detector is positioned at the top inner side of the frame structure along the height direction, and the radiation source device is positioned at the bottom inner side of the frame structure along the height direction; the frame structure is an O-shaped arm structure or a C-shaped arm structure, and the center of the frame structure has a gap for the object to be detected to pass through.

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