X-ray image acquisition device for three-dimensional reconstruction of GIS equipment and acquisition method of X-ray image acquisition device

Abstract

The invention relates to an X-ray image acquisition device for three-dimensional reconstruction of GIS equipment and an acquisition method thereof, a first airbag unit is arranged in an accommodating cavity, the top end of an adjusting unit is connected with the bottom end of the first airbag unit, and the bottom end of the adjusting unit is in contact with the peripheral wall of the GIS equipment; the X-ray assembly is communicated with the first air bag unit through the first connecting assembly, and the imaging assembly is communicated with the first air bag unit through the second connecting assembly; the acquisition process comprises the steps of mechanical verification, parameter setting, transillumination acquisition and optimization of a three-dimensional imaging reconstruction process; the vehicle body is used for carrying the supporting frame to drive the X-ray assembly and the imaging assembly to move synchronously, and the relative position of the imaging assembly and the X-ray assembly can be adjusted in a self-adaptive mode according to the concave-convex road surface and the height change of GIS equipment in the operation process by controlling the adjusting assembly. On the basis of ensuring the stability of the collection process, the manual calibration time and the manpower, material resources and time cost of field adjustment are saved, the collection efficiency is improved, and meanwhile, the safety is improved.

Description

Technical Field

[0001] This invention relates to the field of X-ray inspection technology for GIS equipment, and in particular to an X-ray image acquisition device and acquisition method for three-dimensional reconstruction of GIS equipment. Background Technology

[0002] Currently, in the power industry, GIS refers to sulfur hexafluoride enclosed switchgear, internationally known as "Gas Insulated Switchgear" (hereinafter referred to as GIS). It organically combines the primary equipment of a substation, excluding transformers, including busbars, circuit breakers, current transformers, voltage transformers, disconnect switches, surge arresters, etc., into a whole through optimized design.

[0003] Digital X-ray nondestructive testing (NDT) technology, with its advantages of fast imaging and visualization, has begun to be applied in fields such as power, chemical, and medical. Particularly in the field of power equipment inspection, digital X-ray imaging technology can enable the inspection of equipment such as GIS without disassembling the equipment, damaging the environment, or even interrupting power supply, achieving visualized diagnosis. Digital X-ray imaging technology is based on the model of an X-ray machine emitting rays and a digital flat panel detector receiving the rays passing through the workpiece to form an image. Unlike computed tomography (CT) technology, it eliminates the need to change film and store fluorescent plates between two imaging sessions. Typically, a digital imaging plate can acquire a high-resolution image of the workpiece within seconds, which is faster than traditional film development and CR imaging technologies. However, some shortcomings still exist in on-site inspection, hindering its further widespread application, mainly in the issues of on-site inspection acquisition efficiency and substandard image quality.

[0004] In terms of acquisition efficiency, existing equipment requires time-consuming and labor-intensive methods of securing with ropes. Furthermore, the X-ray machine and digital imaging panel operate on a one-to-one transmission and reception basis. When a single image acquisition fails to achieve optimal results, personnel must move back and forth to adjust the positions of the X-ray machine and imaging panel, increasing manpower and time costs and posing safety hazards due to the need for working at heights. Regarding image quality, GIS equipment is bulky and cannot be rotated or moved during imaging. The equipment often cannot cover the entire object, resulting in incomplete projection data that fails to meet the requirements for accurate reconstruction. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide an X-ray image acquisition device and method for 3D reconstruction of GIS equipment. Its advantage is that it can solve the technical problems of substandard on-site detection acquisition efficiency and imaging quality.

[0006] The above-mentioned objective of this invention is achieved through the following technical solution: On one hand, this invention provides an X-ray image acquisition device for three-dimensional reconstruction of GIS equipment, including a vehicle body, an X-ray component, an imaging component, and a control and adjustment component; the control and adjustment component includes a housing, a first airbag unit, and an adjustment unit. The housing is configured to form a cavity, the first airbag unit is disposed within the cavity, a support frame is provided on the vehicle body, the housing is fixed to the support frame, the top end of the adjustment unit is inserted into the cavity and connected to the bottom end of the first airbag unit, the bottom end of the adjustment unit extends along a first direction of the support frame to the outside of the cavity, passes through the support frame, and contacts the outer peripheral wall of the GIS equipment, the adjustment unit is movable relative to the housing; the X-ray component and the imaging component are respectively disposed on opposite sides of the GIS equipment, the X-ray component is connected to the first airbag unit through a first connecting component, the X-ray component is connected to the adjustment unit through a first tube, the imaging component is connected to the first airbag unit through a second connecting component, and the imaging component is connected to the adjustment unit through a second tube.

[0007] Preferably, the X-ray image acquisition device for 3D reconstruction of GIS equipment provided by the present invention includes an X-ray assembly comprising a hollow adjusting rod, a sliding unit, and a X-ray machine. A sliding opening is provided on the outer wall of the hollow adjusting rod, and the sliding opening communicates with the cavity of the hollow adjusting rod. A first end of the sliding unit passes through the sliding opening and is inserted into the cavity of the hollow adjusting rod. A second end of the sliding unit is located outside the hollow adjusting rod and connected to the X-ray machine. The sliding unit is capable of sliding relative to the hollow adjusting rod. One end of a first connecting component is inserted into the cavity of the hollow adjusting rod and passes through the first end of the sliding unit, communicating with the cavity of the hollow adjusting rod. The other end of the first connecting component is inserted into the accommodating cavity and communicates with the first airbag unit. The second end of the sliding unit communicates with the adjusting unit through the first tube.

[0008] Preferably, the X-ray image acquisition device for 3D reconstruction of GIS equipment provided by the present invention includes a sliding unit comprising a movable block, a slider, and a mounting plate. The movable block is housed within the cavity of the hollow adjusting rod and can slide along the cavity of the hollow adjusting rod. The slider is located within the sliding opening, one side of the slider is connected to the outer wall of the movable block, and the other side of the slider is connected to the mounting plate located outside the hollow adjusting rod. The slider can slide along the extension direction of the sliding opening. One end of the first tube is inserted into the mounting plate, and the other end of the first tube communicates with the adjusting unit. The mounting plate has multiple air holes on the side away from the slider. The multiple air holes are spaced apart along a first direction, and all of the multiple air holes extend along a second direction of the support frame and communicate with the first tube. The X-ray machine is disposed on the side of the mounting plate away from the slider.

[0009] Preferably, the X-ray image acquisition device for 3D reconstruction of GIS equipment provided by the present invention includes a first connecting component comprising a hollow crossbar, a hollow vertical rod, and a conduit. One end of the hollow crossbar passes through the outer wall of the housing and is inserted into the accommodating cavity and connected to the first airbag unit. The other end of the hollow crossbar is connected to the top end of the hollow vertical rod, and the bottom end of the hollow vertical rod passes through the support frame and is connected to the top end of the X-ray assembly. The bottom end of the conduit is inserted into the X-ray assembly, and the top end of the conduit extends to the outside of the X-ray assembly and passes through the hollow vertical rod and the hollow crossbar in sequence to communicate with the first airbag unit.

[0010] Preferably, the X-ray image acquisition device for three-dimensional reconstruction of GIS equipment provided by the present invention includes a first airbag unit comprising a first airbag component and a first elastic component. The first airbag component is disposed within the accommodating cavity, and the first elastic component is disposed within the first airbag component. The top end of the first elastic component is connected to the inner top end of the first airbag component, and the bottom end of the first elastic component is connected to the inner bottom end of the first airbag component.

[0011] Preferably, the X-ray image acquisition device for 3D reconstruction of GIS equipment provided by the present invention includes an adjustment unit comprising a vertical rod, a second airbag unit, a compression rod, and an eccentric wheel. The top end of the vertical rod is connected to the bottom end of the first airbag unit. The vertical rod is movable relative to the housing. A groove is formed at the bottom end of the vertical rod. The eccentric wheel is rotatably disposed in the groove. The outer peripheral wall of the eccentric wheel contacts the outer peripheral wall of the GIS equipment. An installation cavity and a connecting hole are formed inside the vertical rod. The installation cavity communicates with the groove through the connecting hole. The second airbag unit is disposed in the installation cavity. The top end of the compression rod is located in the installation cavity and connected to the bottom end of the second airbag unit. The bottom end of the compression rod passes through the connecting hole and is inserted into the groove, and contacts the outer peripheral wall of the eccentric wheel. The compression rod is slidable relative to the vertical rod.

[0012] Preferably, the X-ray image acquisition device for three-dimensional reconstruction of GIS equipment provided by the present invention includes a second airbag unit comprising a second airbag component and a second elastic component. The second airbag component is disposed within the mounting cavity, and the second elastic component is disposed within the second airbag component. The top end of the second elastic component is connected to the inner top end of the second airbag component, and the bottom end of the second elastic component is connected to the inner bottom end of the second airbag component.

[0013] Preferably, the X-ray image acquisition device for three-dimensional reconstruction of GIS equipment provided by the present invention further includes a support unit in the control and adjustment component. The bottom end of the support unit is inserted into the accommodating cavity and abuts against the top end of the first airbag unit. The top end of the support unit extends to the outside of the housing along the first direction. The support unit is threadedly connected to the housing.

[0014] Preferably, the X-ray image acquisition device for 3D reconstruction of GIS equipment provided by the present invention includes a support unit comprising a threaded rod and a pressure plate. The pressure plate is located inside the accommodating cavity and abuts against the top end of the first airbag unit. A threaded hole is provided at the top end of the housing, and the threaded hole communicates with the accommodating cavity. The bottom end of the threaded rod passes through the threaded hole and is inserted into the accommodating cavity and connected to the pressure plate. The top end of the threaded rod extends to the outside of the housing.

[0015] On the other hand, the present invention provides an acquisition method for an X-ray image acquisition device for 3D reconstruction of GIS equipment as described above, comprising the following steps:

[0016] The X-ray image acquisition device is moved to the acquisition area along the centerline of the GIS equipment, and the X-ray component and the imaging component in the X-ray image acquisition device are respectively located on opposite sides of the GIS equipment to complete the mechanical verification before acquisition;

[0017] The parameters of the X-ray assembly were set using orthogonal experiments based on the on-site conditions.

[0018] The controller of the control and adjustment component is used to change the transmission angle of the X-ray machine in the X-ray assembly and the digital imaging plate in the imaging assembly to perform multi-directional radiographic acquisition and obtain the image information of the GIS equipment acquired by the imaging assembly.

[0019] An improved FDK algorithm is used to optimize the 3D imaging reconstruction process of GIS equipment.

[0020] In summary, the beneficial technical effects of the present invention are as follows: The X-ray image acquisition device and its acquisition method for three-dimensional reconstruction of GIS equipment provided in this application include a vehicle body, an X-ray component, an imaging component, and a control and adjustment component; the control and adjustment component includes a housing, a first airbag unit, and an adjustment unit. The housing is configured to form a cavity, the first airbag unit is disposed within the cavity, a support frame is provided on the vehicle body, the housing is fixed to the support frame, the top end of the adjustment unit is inserted into the cavity and connected to the bottom end of the first airbag unit, and the bottom end of the adjustment unit extends along a first direction of the support frame to the outside of the cavity and passes through the support frame to contact the outer peripheral wall of the GIS equipment. The adjustment unit can move relative to the housing; the X-ray component and the imaging component are respectively disposed on opposite sides of the GIS equipment, and the X-ray component is connected via a first... The connecting component is connected to the first airbag unit, the X-ray component is connected to the adjustment unit through the first tube, and the imaging component is connected to the first airbag unit through the second connecting component and the adjustment unit through the second tube. The acquisition process is as follows: mechanical calibration - parameter setting - multi-directional radiographic acquisition - optimization of the 3D imaging reconstruction process of the GIS equipment. By setting up the control and adjustment component, compared with the traditional X-ray image acquisition device, the X-ray component and the imaging component are driven to move synchronously by the support frame mounted on the vehicle body. By controlling and adjusting the component, the relative position of the imaging component and the X-ray component can be adaptively adjusted according to the unevenness of the road surface and the height change of the GIS equipment during operation. This saves the time and manpower, material resources and time costs of manual calibration and on-site adjustment while ensuring the stability of the acquisition process, improving the acquisition efficiency and safety. Attached Figure Description

[0021] Figure 1 This is a cross-sectional view of an X-ray image acquisition device for three-dimensional reconstruction of GIS equipment provided in the first embodiment of the present invention.

[0022] Figure 2 This is a cross-sectional view of the X-ray component in the X-ray image acquisition device for three-dimensional reconstruction of GIS equipment provided in the first embodiment of the present invention.

[0023] Figure 3 This is a cross-sectional view of the control and adjustment component in the X-ray image acquisition device for three-dimensional reconstruction of GIS equipment provided in the first embodiment of the present invention.

[0024] Figure 4 This is a structural block diagram of the built-in processor in the X-ray image acquisition device for three-dimensional reconstruction of GIS equipment provided in the first embodiment of the present invention.

[0025] Figure 5 This is a flowchart of the acquisition method of the X-ray image acquisition device for three-dimensional reconstruction of GIS equipment provided in the second embodiment of the present invention.

[0026] In the figure, 1. X-ray image acquisition device; 10. Vehicle body; 20. X-ray assembly; 21. Hollow adjustment rod; 211. Sliding port; 212. Sealed space; 22. Sliding unit; 221. Movable block; 222. Slider; 223. Mounting plate; 2231. Air vent; 23. X-ray machine; 30. Imaging assembly; 31. Built-in processor; 311. Acquisition module; 3111. FPGA; 3112. AD; 3113. Static memory; 3114. Image acquisition; 312. Transmission module; 3121. Network card chip; 3122. 51 microcontroller; 32. Digital imaging board; 40. Control and adjustment assembly; 41. Housing; 411. Accommodating cavity; 42. First airbag unit; 421. First airbag. Components; 422, First elastic component; 43, Adjustment unit; 431, Vertical rod; 4311, Groove; 4312, Mounting cavity; 4313, Connecting hole; 432, Second airbag unit; 4321, Second airbag component; 4322, Second elastic component; 433, Extrusion rod; 434, Eccentric wheel; 44, Support unit; 441, Threaded rod; 442, Pressure plate; 443, Handle; 45, Controller; 50, First connecting assembly; 51, Hollow crossbar; 52, Hollow upright; 53, Conduit; 60, Second connecting assembly; 70, First pipe body; 80, Second pipe body; 90, Support frame; 91, Mounting column; 92, Horizontal plate; 100, First direction; 110, Second direction; 2, GIS equipment. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings.

[0028] First embodiment:

[0029] Reference Figure 1 and Figure 3This invention discloses an X-ray image acquisition device 1 for 3D reconstruction of GIS equipment, comprising a vehicle body 10, an X-ray assembly 20, an imaging assembly 30, and a control and adjustment assembly 40. The control and adjustment assembly 40 includes a housing 41, a first airbag unit 42, and an adjustment unit 43. The housing 41 forms a cavity 411, and the first airbag unit 42 is disposed within the cavity 411. A support frame 90 is mounted on the vehicle body 10, and the housing 41 is fixed to the support frame 90. The top end of the adjustment unit 43 is inserted into the cavity 411 and connected to the bottom end of the first airbag unit 42. The bottom end of the adjustment unit 43 extends along a first direction 100 of the support frame 90 to the outside of the cavity 411 and passes through the support frame 90 to contact the outer peripheral wall of the GIS equipment 2. The adjustment unit 43 is movable relative to the housing 41. The X-ray assembly 20 and the imaging assembly 30 are respectively disposed within the GIS equipment 2. On opposite sides of device 2, X-ray assembly 20 is connected to first airbag unit 42 via first connecting assembly 50, and X-ray assembly 20 is connected to adjustment unit 43 via first tube 70. Imaging assembly 30 is connected to first airbag unit 42 via second connecting assembly 60, and imaging assembly 30 is connected to adjustment unit 43 via second tube 80. By setting up control and adjustment assembly 40, compared with traditional X-ray image acquisition devices, the X-ray assembly 20 and imaging assembly 30 are driven to move synchronously by using support frame 90 mounted on vehicle body 10. By controlling and adjusting assembly 40 during operation, the relative positions of imaging assembly 30 and X-ray assembly 20 can be adaptively adjusted according to road surface unevenness and changes in the height of GIS device 2. While ensuring the stability of the acquisition process, it saves manual calibration time and on-site adjustment manpower, material resources and time costs, improves acquisition efficiency, and improves safety.

[0030] It should be noted that the first direction 100 of the support frame 90 is the vertical direction of the support frame 90, and the second direction 110 of the support frame 90 is the horizontal direction of the support frame 90. The first direction 100 and the second direction 110 of the support frame 90 are set perpendicular to each other.

[0031] The GIS device 2 is cylindrical. The control and adjustment assembly 40 also includes a controller 45, which is located inside the housing 41. The X-ray assembly 20 and the imaging assembly 30 are both connected to the controller 45. The controller 45 is used to rotate the X-ray assembly 20 and the imaging assembly 30 to complete multi-angle imaging of the GIS from the same position.

[0032] Specifically, the support frame 90 includes a mounting column 91 and a horizontal plate 92. The bottom end of the mounting column 91 is connected to the vehicle body 10, and the top end of the mounting column 91 is connected to the bottom surface of the end near the horizontal plate 92. The end of the horizontal plate 92 away from the mounting column 91 is a free end, and the housing 41 is set on the horizontal plate 92. By setting the horizontal plate 92, the function of the horizontal plate 92 is to drive the X-ray assembly 20 and the imaging assembly 30 to move synchronously, thereby ensuring that the X-ray assembly 20 and the imaging assembly 30 are always in a mutually perpendicular state when the vehicle body 10 moves, thus ensuring the stability of image acquisition by the GIS equipment 2.

[0033] When acquiring image data for large GIS equipment 2 with high voltage level, by setting the control and adjustment component 40 and the support frame 90, the X-ray component 20 can be precisely kept in sync with the imaging component 30 as it moves, which can save time for manual calibration to a certain extent and improve acquisition efficiency.

[0034] The horizontal plate 92 has a through hole, the housing 41 is positioned opposite the through hole, the through hole is connected to the accommodating cavity 411, the top end of the adjustment unit 43 is inserted into the accommodating cavity 411 and connected to the bottom end of the first airbag unit 42, the bottom end of the adjustment unit 43 extends through the through hole to the lower part of the horizontal plate 92 and contacts the outer peripheral wall of the GIS equipment 2, and the adjustment unit 43 can slide along the center line of the through hole.

[0035] by Figure 1 Taking the orientation shown as an example, both the X-ray component 20 and the imaging component 30 are located at the lower part of the horizontal plate 92, ensuring that the X-ray image acquisition device 1 can acquire multiple segments of image information from the GIS device 2. The X-ray component 20 is located on the left side of the GIS device 2, and the imaging component 30 is located on the right side of the GIS device 2. The X-ray component 20 and the imaging component 30 are arranged opposite to each other.

[0036] During use, the X-ray assembly 20 and the imaging assembly 30 work together to acquire images. The built-in processor 31 of the imaging assembly 30 is used to detect abnormalities in data communication, acquire, transmit, and store image data. The built-in control system of the X-ray assembly 20 is powered by a battery and can set shooting parameters according to on-site conditions.

[0037] It should be noted that the built-in control system is a component well known to those skilled in the art, and its structure will not be described in detail here.

[0038] Continue to refer to Figure 4The built-in processor 31 includes an acquisition module 311 and a transmission module 312. The acquisition module 311 includes an FPGA 3111, an AD 3112, a static memory 3113, and an image acquisition 3114. The FPGA 3111 is connected to the AD 3112, the AD 3112 is interactively connected to the image acquisition 3114, and the AD 3112 is connected to the static memory 3113.

[0039] Specifically, the transmission module 312 includes a network card chip 3121 and a 51 microcontroller 3122. The network card chip 3121 and the 51 microcontroller 3122 are interconnected. The 51 microcontroller 3122 is connected to the FPGA 3111 and the 51 microcontroller 3122 is connected to the static memory 3113.

[0040] During use, the acquisition module 311 can obtain acquisition commands issued by the transmission control module. That is, the 51 microcontroller 3122 sends acquisition commands to the image acquisition 3114 through the FPGA 3111 and AD 3112. The image acquisition 3114 acquires information according to the acquisition commands. With the help of the internal timing of the FPGA 3111, the information acquired by the image acquisition 3114 is converted by AD 3112 and sequentially stored in the static memory 3113 SRAM. Then, the reading function is started to transmit the detected GIS device 2 information to the transmission module 312 in sequence, realizing the functions of digital imaging image acquisition and image transmission, and realizing remote operation of digital imaging.

[0041] Continue to refer to Figure 2 In this embodiment, the X-ray assembly 20 includes a hollow adjusting rod 21, a sliding unit 22, and a X-ray machine 23. A sliding opening 211 is provided on the outer wall of the hollow adjusting rod 21, which communicates with the cavity of the hollow adjusting rod 21. The first end of the sliding unit 22 passes through the sliding opening 211 and is inserted into the cavity of the hollow adjusting rod 21. The second end of the sliding unit 22 is located outside the hollow adjusting rod 21 and is connected to the X-ray machine 23. The sliding unit 22 can slide relative to the hollow adjusting rod 21. By setting the sliding unit 22, the sliding unit 22 drives the X-ray machine 23 to move, thereby adjusting the position of the X-ray machine 23.

[0042] Specifically, the centerline of the hollow adjusting rod 21 is set parallel to the first direction 100, and the hollow adjusting rod 21 has a sliding opening 211 on the side facing the GIS equipment 2. That is to say, with Figure 2 Taking the orientation shown as an example, a sliding opening 211 is provided on the right side wall of the hollow adjusting rod 21. The sliding opening 211 extends along the first direction 100, and the sliding unit 22 can slide along the cavity of the hollow adjusting rod 21.

[0043] One end of the first connecting component 50 is inserted into the cavity of the hollow adjusting rod 21 and passes through the first end of the sliding unit 22, communicating with the cavity of the hollow adjusting rod 21. The other end of the first connecting component 50 is inserted into the accommodating cavity 411 and communicates with the first airbag unit 42. The second end of the sliding unit 22 is communicated with the adjusting unit 43 through the first tube 70.

[0044] Specifically, the end of the first connecting component 50 away from the X-ray component 20 passes through the horizontal plate 92 and is inserted into the accommodating cavity 411, and is connected to the first airbag unit 42.

[0045] It should be noted that the structure of the imaging component 30 is basically the same as that of the X-ray component 20. The only difference between the imaging component 30 and the X-ray component 20 is that the X-ray machine 23 is replaced with a digital imaging plate 32. That is to say, the second end of the sliding unit 22 in the imaging component 30 is connected to the digital imaging plate 32.

[0046] During use, when the vehicle body 10 moves on an uneven road surface, the uneven road surface causes the position of the horizontal plate 92 to change, while the height of the GIS device 2 remains unchanged. When the vehicle body 10 is on a raised part of the road surface, the horizontal plate 92 moves upward as a whole, causing the housing 41 to move upward, which in turn stretches the first airbag unit 42. When the first airbag unit 42 is stretched, a negative pressure is generated inside it, which draws a part of the gas in the cavity of the hollow adjustment rod 21 into the first airbag unit 42, thereby reducing the height of the sliding unit 22. This reduces the height of the X-ray machine 23 and the digital imaging plate 32 on both sides of the GIS device 2, thus ensuring that even when the vehicle body 10 is on a raised part of the road surface, the height of the X-ray machine 23 and the digital imaging plate 32 can be reduced under the action of the control and adjustment component 40, so that they are always in a stable shooting position for the GIS device 2.

[0047] Furthermore, in this embodiment, the sliding unit 22 includes a movable block 221, a slider 222, and a mounting plate 223. The movable block 221 is housed within the cavity of the hollow adjusting rod 21 and can slide along the cavity of the hollow adjusting rod 21. The slider 222 is located within the sliding opening 211. One side of the slider 222 is connected to the outer wall of the movable block 221, and the other side of the slider 222 is connected to the mounting plate 223 located outside the hollow adjusting rod 21. The slider 222 can slide along the sliding opening 211. The first tube 70 slides in the direction of extension 1; one end of the first tube 70 is inserted into the mounting plate 223, and the other end of the first tube 70 is connected to the adjustment unit 43. The mounting plate 223 has multiple air holes 2231 on the side away from the slider 222. The multiple air holes 2231 are spaced apart along the first direction 100. The multiple air holes 2231 all extend along the second direction 110 of the support frame 90 and are all connected to the first tube 70. The X-ray machine 23 is located on the side of the mounting plate 223 away from the slider 222.

[0048] It should be noted that the air hole 2231 on the mounting plate 223 in the sliding unit 22 of the imaging assembly 30 is connected to the adjustment unit 43 through the second tube 80, and the side of the mounting plate 223 in the sliding unit 22 of the imaging assembly 30 away from the slider 222 is connected to the digital imaging plate 32.

[0049] Both the first tube 70 and the second tube 80 can be made of flexible tubing.

[0050] In order to ensure that the bottom of the movable block 221 can form a sealed space 212 with the cavity of the hollow adjusting rod 21, a sealing ring is also fitted on the movable block 221.

[0051] Continue to refer to Figure 1 and Figure 2 In this embodiment, the first connecting component 50 includes a hollow crossbar 51, a hollow vertical rod 52, and a conduit 53. One end of the hollow crossbar 51 passes through the outer wall of the housing 41 and is inserted into the accommodating cavity 411 and connected to the first airbag unit 42. The other end of the hollow crossbar 51 is connected to the top end of the hollow vertical rod 52. The bottom end of the hollow vertical rod 52 passes through the support frame 90 and is connected to the top end of the X-ray assembly 20. The bottom end of the conduit 53 is inserted into the X-ray assembly 20. The top end of the conduit 53 extends to the outside of the X-ray assembly 20 and passes through the hollow vertical rod 52 and the hollow crossbar 51 in sequence to communicate with the first airbag unit 42.

[0052] Specifically, the bottom end of the hollow upright 52 passes through the horizontal plate 92 and connects to the top end of the hollow adjusting rod 21. The bottom end of the conduit 53 is inserted into the cavity of the hollow adjusting rod 21 and passes through the movable block 221 to communicate with the sealed space 212. The top end of the conduit 53 extends to the outside of the hollow adjusting rod 21 and passes through the hollow upright 52 and the hollow horizontal rod 51 in sequence to communicate with the first airbag unit 42.

[0053] Among them, the hollow horizontal bar 51 extends along the second direction 110, and the hollow vertical bar 52 extends along the first direction 100.

[0054] It should be noted that the structure of the second connecting component 60 is the same as that of the first connecting component 50, and the connection structure between the second connecting component 60 and the imaging component 30 is the same as that between the first connecting component 50 and the X-ray component 20. Therefore, the structure of the second connecting component 60 and its connection structure with the imaging component 30 will not be described in detail here.

[0055] Continue to refer to Figure 1 and Figure 3 In this embodiment, the first airbag unit 42 includes a first airbag component 421 and a first elastic component 422. The first airbag component 421 is disposed in the accommodating cavity 411, and the first elastic component 422 is disposed in the first airbag component 421. The top end of the first elastic component 422 is connected to the inner top end of the first airbag component 421, and the bottom end of the first elastic component 422 is connected to the inner bottom end of the first airbag component 421.

[0056] The first elastic element 422 can be a helical spring, or it can be a cylinder with elasticity.

[0057] In a possible implementation where the first elastic element 422 is a helical spring, the centerline of the first elastic element 422 is arranged parallel to the first direction 100.

[0058] The control and adjustment assembly 40 also includes a support unit 44. The bottom end of the support unit 44 is inserted into the accommodating cavity 411 and abuts against the top end of the first airbag unit 42. The top end of the support unit 44 extends along the first direction 100 to the outside of the housing 41. The support unit 44 is threadedly connected to the housing 41.

[0059] In this embodiment, the support unit 44 includes a threaded rod 441 and a pressure plate 442. The pressure plate 442 is located in the accommodating cavity 411 and abuts against the top of the first airbag unit 42. The top of the housing 41 is provided with a threaded hole that communicates with the accommodating cavity 411. The bottom end of the threaded rod 441 passes through the threaded hole and is inserted into the accommodating cavity 411 and connected to the pressure plate 442. The top end of the threaded rod 441 extends to the outside of the housing 41.

[0060] Specifically, the pressure plate 442 is located inside the accommodating cavity 411 and abuts against the top of the first airbag component 421. The center line of the threaded hole is set parallel to the first direction 100, and the internal thread of the threaded hole is adapted to the external thread of the threaded rod 441.

[0061] To facilitate the screwing of the threaded rod 441, a handle 443 is provided at the top of the threaded rod 441.

[0062] The handle 443 can be in a straight line or in an H-shape.

[0063] Further, in this embodiment, the adjustment unit 43 includes a vertical rod 431, a second airbag unit 432, a compression rod 433, and an eccentric wheel 434. The top end of the vertical rod 431 is connected to the bottom end of the first airbag unit 42. The vertical rod 431 can move relative to the housing 41. A groove 4311 is provided at the bottom end of the vertical rod 431. The eccentric wheel 434 is rotatably disposed in the groove 4311. The outer peripheral wall of the eccentric wheel 434 contacts the outer peripheral wall of the GIS equipment 2. An installation cavity 4312 and a connecting hole 4313 are provided in the vertical rod 431. The installation cavity 4312 communicates with the groove 4311 through the connecting hole 4313. The airbag unit 432 is disposed in the mounting cavity 4312. The top end of the compression rod 433 is located in the mounting cavity 4312 and connected to the bottom end of the second airbag unit 432. The bottom end of the compression rod 433 passes through the connecting hole 4313 and is inserted into the groove 4311, and contacts the outer peripheral wall of the eccentric wheel 434. The compression rod 433 can slide relative to the vertical rod 431. By setting the second airbag unit 432, it is avoided that the slight bumps encountered by the eccentric wheel 434 when moving on the GIS equipment 2 will be directly transmitted to the control and adjustment component 40, thereby avoiding unnecessary adjustments of the first airbag component 421, thus improving the stability of imaging.

[0064] Specifically, the top end of the vertical rod 431 is inserted into the accommodating cavity 411 and connected to the bottom end of the first airbag component 421. The bottom end of the vertical rod 431 extends along the first direction 100 to the outside of the accommodating cavity 411, passes through the through hole and extends downward to connect with the eccentric wheel 434. The eccentric wheel 434 can rotate around the eccentric point in the groove 4311.

[0065] The vertical rod 431 can move along the accommodating cavity 411. During the image acquisition process, the vertical rod 431 pushes the first airbag component 421 to move along the first direction 100 within the accommodating cavity 411 of the housing 41, thereby compressing the first airbag component 421.

[0066] In this embodiment, the end of the first tube 70 facing away from the X-ray assembly 20 and the end of the second tube 80 facing away from the imaging assembly 30 are both inserted into the mounting cavity 4312 through the outside of the vertical rod 431 and communicate with the second airbag unit 432. The center line of the compression rod 433 is arranged parallel to the first direction 100.

[0067] When the eccentric wheel 434 encounters a slight bump while moving on the GIS device 2, the compression rod 433 pushes the second airbag unit 432 to move along the first direction 100 within the mounting cavity 4312, thereby compressing the second airbag unit 432. This forces the air inside the second airbag unit 432 to be discharged to the outside through the tube (the collective name of the first tube 70 and the second tube 80) and the air hole 2231, thus avoiding unnecessary adjustment of the first airbag component 421 and improving the stability of the imaging.

[0068] By controlling the unique double-layer airbag adjustment structure inside the adjustment component 40, and under the dynamic adjustment of the elastic element, the height of the mounting plate 223 is adjusted to ensure that the eccentric wheel 434 can fit into the GIS equipment 2, thereby realizing the dynamic adjustment of the height of the X-ray machine 23 and the digital imaging plate 32 and ensuring the stability of the imaging.

[0069] Furthermore, in this embodiment, the second airbag unit 432 includes a second airbag component 4321 and a second elastic component 4322. The second airbag component 4321 is disposed in the mounting cavity 4312, and the second elastic component 4322 is disposed in the second airbag component 4321. The top end of the second elastic component 4322 is connected to the inner top end of the second airbag component 4321, and the bottom end of the second elastic component 4322 is connected to the inner bottom end of the second airbag component 4321.

[0070] Specifically, the second elastic element 4322 can be a helical spring, or it can be a cylinder with elasticity.

[0071] In a possible implementation where the second elastic element 4322 is a helical spring, the centerline of the second elastic element 4322 is set parallel to the first direction.

[0072] The first tube 70, with one end facing away from the X-ray assembly 20, and the second tube 80, with one end facing away from the imaging assembly 30, both pass through the outside of the vertical rod 431 and are inserted into the mounting cavity 4312, and are connected to the second airbag component 4321.

[0073] The working principle of the X-ray image acquisition device 1 for 3D reconstruction of GIS equipment provided in this embodiment is as follows: When the vehicle body 10 moves on an uneven road surface, the uneven road surface causes the position of the horizontal plate 92 to change, while the height of the GIS equipment 2 remains unchanged. When the vehicle body 10 is on a raised part of the road surface, the horizontal plate 92 moves upward as a whole, causing the housing 41 to move upward, thereby stretching the first airbag component 421. When the first airbag component 421 is stretched, a negative pressure is generated inside it, thereby drawing a portion of the gas in the cavity (i.e., the sealed space 212) of the hollow adjusting rod 21 into the first airbag component 421, thereby reducing the height of the movable block 221. This reduces the height of the X-ray machine 23 and the digital imaging plate 32 on both sides of the GIS equipment 2, thus ensuring that even when the vehicle body 10 is on a raised part of the road surface, the height of the X-ray machine 23 and the digital imaging plate 32 can be reduced under the action of the control and adjustment component 40, so that the X-ray machine 23 and the digital imaging plate 32 are always in a stable imaging position for the GIS equipment 2.

[0074] Specifically, when the vehicle body 10 drives the horizontal cross plate 92 to move horizontally, as the height of the GIS equipment 2 gradually increases, the vertical rod 431 moves upward. When the vertical rod 431 moves, it will squeeze the first airbag component 421, forcing the air inside the first airbag component 421 to be transferred through the conduit 53 to the cavity of the central hole adjusting rod (i.e., the sealed space 212). When the gas enters the cavity of the hollow adjusting rod 21 (i.e., the sealed space 212), it pushes the movable block 221 to move upward in the hollow adjusting rod 21 under the action of air pressure, thereby raising the height of the X-ray machine 23 and the digital imaging plate 32 on both sides of the GIS equipment 2. Similarly, when the height of the GIS device 2 decreases, the vertical rod 431, under the action of the first elastic element 422 inside the first airbag 421, pushes the vertical rod 431 downward and presses it down on the top of the GIS device 2. At this time, the first airbag 421 gradually expands and lengthens. During the expansion and lengthening process, a negative pressure is generated inside the first airbag 421, which draws a part of the gas in the cavity (i.e., the sealed space 212) of the hollow adjusting rod 21 into the first airbag 421, thereby reducing the height of the movable block 221, thus realizing the reduction of the height of the two-sided X-ray machine 23 and the digital imaging plate 32 (6). The above process realizes the automatic adjustment of the mounting plate 223 (11) in the vertical direction, and finally realizes the adjustment of the height of the X-ray and imaging components 30 on both sides of the GIS device 2, ensuring that the X-ray (5) and the imaging components 30 are always in a stable shooting position for the GIS device 2.

[0075] Second embodiment:

[0076] Continue to refer to Figure 5The second embodiment provides an acquisition method for an X-ray image acquisition device 1 for 3D reconstruction of GIS equipment as described in the first embodiment, comprising the following steps:

[0077] S101. Move the X-ray image acquisition device 1 along the center line of the GIS equipment 2 to the acquisition area, and position the X-ray component 20 and the imaging component 30 in the X-ray image acquisition device 1 on opposite sides of the GIS equipment 2 to complete the mechanical verification before acquisition.

[0078] Specifically, the GIS device 2 is cylindrical. The control vehicle 10 drives the support frame 90 to move the X-ray component 20 and the imaging component 30 along the center line of the GIS device 2 to the acquisition area, so that the X-ray component 20 and the imaging component 30 in the X-ray image acquisition device 1 are located on opposite sides of the GIS device 2.

[0079] The mechanical verification process is as follows: the vehicle body 10 is moved to one side of the GIS equipment 2, and the X-ray component 20 and imaging component 30 in the image acquisition device are respectively located on both sides of the GIS equipment 2. The eccentric wheel 434 in the control and adjustment component 40 is tightly attached to the upper outer wall of the GIS equipment 2. The vehicle body 10 drives the horizontal plate 92 to move along the center line of the GIS equipment 2 according to the planned travel route.

[0080] Specifically, the inspection process verifies the adjustability of the mechanical structure of the X-ray image acquisition device 1 by simulating the conditions that occur during on-site acquisition. During the on-site X-ray scanning process, the X-ray machine 23 may encounter the following two situations: the vehicle body 10 encounters uneven road surfaces and the GIS equipment 2 changes in height as it moves with the vehicle body 10.

[0081] In both cases, in order to ensure stable X-ray imaging capability, the control and adjustment component 40 can automatically and synchronously adjust the lifting height of the X-ray component 20 and the imaging component 30 while ensuring that the eccentric wheel 434 can fit against the GIS equipment 2, so as to ensure that both can always act on the GIS equipment 2.

[0082] Specifically, when the vehicle body 10 moves on an uneven road surface, the uneven road surface causes the position of the horizontal plate 92 to change, while the height of the GIS device 2 remains unchanged. When the vehicle body 10 is on a raised part of the road surface, the horizontal plate 92 moves upward as a whole, causing the housing 41 to move upward, which in turn stretches the first airbag component 421. When the first airbag component 421 is stretched, a negative pressure is generated inside it, thereby drawing a portion of the gas in the cavity (i.e., the sealed space 212) of the hollow adjustment rod 21 into the first airbag component 421, thereby reducing the height of the movable block 221. This reduces the height of the X-ray machine 23 and the digital imaging plate 32 on both sides of the GIS device 2, thus ensuring that even when the vehicle body 10 is on a raised part of the road surface, the height of the X-ray machine 23 and the digital imaging plate 32 can be reduced under the action of the control and adjustment component 40, so that the X-ray machine 23 and the digital imaging plate 32 are always in a stable imaging position for the GIS device 2.

[0083] When the vehicle body 10 drives the horizontal plate 92 to move horizontally, as the height of the GIS equipment 2 gradually increases, the vertical rod 431 moves upward. When the vertical rod 431 moves, it will squeeze the first airbag component 421, forcing the air inside the first airbag component 421 to be transferred through the conduit 53 to the cavity (i.e., the sealed space 212) of the central hole adjusting rod. When the gas enters the cavity (i.e., the sealed space 212) of the hollow adjusting rod 21, it pushes the movable block 221 to move upward in the hollow adjusting rod 21 under the action of air pressure, thereby raising the height of the X-ray machine 23 and the digital imaging plate 32 on both sides of the GIS equipment 2. Similarly, when the height of the GIS device 2 decreases, the vertical rod 431, under the action of the first elastic element 422 inside the first airbag 421, pushes the vertical rod 431 downward and presses it down on the top of the GIS device 2. At this time, the first airbag 421 gradually expands and lengthens. During the expansion and lengthening process, a negative pressure is generated inside the first airbag 421, which draws a part of the gas in the cavity (i.e., the sealed space 212) of the hollow adjusting rod 21 into the first airbag 421, thereby reducing the height of the movable block 221, thus realizing the reduction of the height of the two-sided X-ray machine 23 and the digital imaging plate 32 (6). The above process realizes the automatic adjustment of the mounting plate 223 (11) in the vertical direction, and finally realizes the adjustment of the height of the X-ray and imaging components 30 on both sides of the GIS device 2, ensuring that the X-ray (5) and the imaging components 30 are always in a stable shooting position for the GIS device 2.

[0084] In summary, by controlling the unique double-layer airbag adjustment structure inside the adjustment component 40, and under the dynamic adjustment of the elastic element, the height of the mounting plate 223 is adjusted to ensure that the eccentric wheel 434 can fit into the GIS equipment 2, thereby realizing the dynamic adjustment of the height of the X-ray machine 23 and the digital imaging plate 32 and ensuring the stability of the imaging.

[0085] S102. Using orthogonal experiments, the parameters of the X-ray assembly 20 are set according to the on-site conditions.

[0086] Specifically, parameter setting refers to analyzing the impact of each parameter on X-ray image quality through orthogonal experiments based on work experience and field conditions, and finding the optimal imaging conditions. Influencing parameters include: voltage, current, focal length, exposure time, etc.

[0087] Among them, the orthogonal experimental design method refers to the method of carefully arranging the combination of research factors in a multi-factor experiment to achieve a high-efficiency experiment and obtain the optimal parameter combination to determine the recommended values ​​of equipment parameters, thereby improving imaging quality and visualization effects.

[0088] The S102 step specifically includes: clarifying the experimental objective and determining the evaluation indicators; selecting influencing parameters; selecting and designing a suitable orthogonal array and determining the optimal parameters by dividing the mean; and analyzing the experimental results.

[0089] For example, taking a 110kV single-phase basin insulator as an example, the defects of the basin insulator are mainly reflected in two aspects: pores 2231 and cracks caused during production and processing. The four factors affecting the imaging quality of the X-ray machine 23 are, in order: exposure time, focal length, tube current, and tube voltage. After experimental verification, the recommended parameters for crack detection are: tube voltage 165kV, tube current 1.4mA, exposure time 5s, and focal length 1700mm; the recommended parameters for pore 2231 detection are: tube voltage 160kV, tube current 2.5mA, exposure time 10s, and focal length 1700mm.

[0090] In summary, step S102 uses orthogonal experimental design to analyze the influence of relevant parameters on X-ray image quality and finds the optimal imaging conditions for detecting defects in basin-type insulators.

[0091] S103. Using the controller 45 of the control and adjustment component 40, the transmission angles of the X-ray machine 23 in the X-ray component 20 and the digital imaging plate 32 in the imaging component 30 are changed to perform multi-directional radiographic acquisition and obtain the image information of the GIS device 2 acquired by the imaging component 30.

[0092] For example, taking a basin-type insulator as an example, under vertical illumination, the obstruction of structures such as flanges, bolts, and shielding covers hinders the imaging of defects on the basin surface. Under oblique illumination, it is unfavorable for detecting defects such as loose screws. Therefore, both oblique and vertical illumination methods are selected for angle configuration.

[0093] Specifically, firstly, vertical radiography is selected to determine the curvature of the basin surface and the contact connection method. Then, the angle of tilt radiography is selected according to the curvature of the basin surface, usually between 45° and 60°. Next, using the controller 45 in the control and adjustment assembly 40, the X-ray assembly 20 and the imaging assembly 30 are rotated synchronously to complete multi-angle imaging of the GIS from the same position.

[0094] In summary, step S103, by controlling the controller 45 in the control and adjustment component 40, enables the GIS equipment 2 components to be illuminated from multiple angles, and simultaneously employs both vertical and oblique illumination methods to fully illuminate the basin-type insulator, thereby avoiding incomplete projection data due to missed inspections and laying the foundation for subsequent three-dimensional reconstruction.

[0095] S104. Optimize the 3D imaging reconstruction process of GIS equipment 2 using the improved FDK algorithm.

[0096] Specifically, the improved FDK algorithm reconstruction process includes: firstly, by establishing a virtual detector coordinate system and correcting the ray angle and intersection coordinates, the reconstruction distortion problem caused by the object deviating from the rotation center is solved; then, the truncated projection data caused by insufficient coverage of the ray machine 23 is extended by a sine function to smoothly fill in the missing data to suppress edge artifacts; in the back projection stage, only the data of the effective signal area is selected to participate in the reconstruction to avoid noise interference; finally, the high-resolution tomographic map is generated quickly and the reconstruction data f(x,y,z) is generated by combining GPU parallel acceleration, as shown in formula (1):

[0097]

[0098] In equation (1): β is the angle between the X-ray source and the x-axis of the origin; Ls is the distance between the X-ray source and the imaging component 30; Xr is the coordinate of the reconstructed point and its abscissa in the rotating coordinate system.

[0099] The improved algorithm significantly enhances the imaging accuracy and reliability of the internal structure of the fixed-posture GIS device 2 through three key steps: geometric adaptation, data compensation, and computational optimization.

[0100] By optimizing parameters such as voltage and current through orthogonal experiments and combining vertical and oblique multi-angle illumination, incomplete projection data is avoided. The improved FDK algorithm realizes geometric adaptation, data compensation and GPU acceleration in the reconstruction process, optimizes the accuracy of 3D reconstruction, and thus improves the imaging quality.

[0101] This application provides an X-ray image acquisition device 1 for 3D reconstruction of GIS equipment and its acquisition method. The X-ray image acquisition device 1 includes a vehicle body 10, an X-ray assembly 20, an imaging assembly 30, and a control and adjustment assembly 40. The control and adjustment assembly 40 includes a housing 41, a first airbag unit 42, and an adjustment unit 43. The housing 41 forms a cavity 411, and the first airbag unit 42 is disposed within the cavity 411. A support frame 90 is provided on the vehicle body 10, and the housing 41 is fixed to the support frame 90. The top end of the adjustment unit 43 is inserted into the cavity 411 and connected to the bottom end of the first airbag unit 42. The bottom end of the adjustment unit 43 extends along a first direction 100 of the support frame 90 to the outside of the cavity 411 and passes through the support frame 90 to contact the outer peripheral wall of the GIS equipment 2. The adjustment unit 43 can move relative to the housing 41. The X-ray assembly 20 and the imaging assembly 30 are respectively disposed on opposite sides of the GIS equipment 2. The X-ray component 20 is connected to the first airbag unit 42 via the first connecting component 50, the X-ray component 20 is connected to the adjustment unit 43 via the first tube 70, and the imaging component 30 is connected to the first airbag unit 42 via the second connecting component 60 and the adjustment unit 43 via the second tube 80. The acquisition process is as follows: mechanical calibration - parameter setting - multi-directional radiographic acquisition - optimization of the three-dimensional imaging reconstruction process of the GIS equipment 2. By setting the control and adjustment component 40, compared with the traditional X-ray image acquisition device, the X-ray component 20 and the imaging component 30 are driven to move synchronously by the support frame 90 mounted on the vehicle body 10. By controlling the adjustment component 40 during operation, the relative positions of the imaging component 30 and the X-ray component 20 can be adaptively adjusted according to the unevenness of the road surface and the height changes of the GIS equipment 2. While ensuring the stability of the acquisition process, it saves the time and manpower, material resources and time costs of on-site adjustment, improves the acquisition efficiency, and improves safety.

[0102] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0103] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An X-ray image acquisition device for three-dimensional reconstruction of GIS equipment, characterized in that: This includes the vehicle body, X-ray assembly, imaging assembly, and control and adjustment assembly; The control and adjustment assembly includes a housing, a first airbag unit, and an adjustment unit. The housing is configured to form a cavity, the first airbag unit is disposed within the cavity, a support frame is provided on the vehicle body, the housing is fixed to the support frame, the top end of the adjustment unit is inserted into the cavity and connected to the bottom end of the first airbag unit, the bottom end of the adjustment unit extends along a first direction of the support frame to the outside of the cavity, passes through the support frame and contacts the outer peripheral wall of the GIS equipment, and the adjustment unit is movable relative to the housing. The X-ray component and the imaging component are respectively disposed on opposite sides of the GIS device. The X-ray component is connected to the first airbag unit through a first connecting component and to the adjustment unit through a first tube. The imaging component is connected to the first airbag unit through a second connecting component and to the adjustment unit through a second tube.

2. The X-ray image acquisition device for three-dimensional reconstruction of GIS equipment according to claim 1, characterized in that: The X-ray assembly includes a hollow adjusting rod, a sliding unit, and a X-ray machine. A sliding opening is provided on the outer wall of the hollow adjusting rod, and the sliding opening communicates with the cavity of the hollow adjusting rod. The first end of the sliding unit passes through the sliding opening and is inserted into the cavity of the hollow adjusting rod. The second end of the sliding unit is located outside the hollow adjusting rod and is connected to the X-ray machine. The sliding unit can slide relative to the hollow adjusting rod. One end of the first connecting component is inserted into the cavity of the hollow adjusting rod and passes through the first end of the sliding unit and communicates with the cavity of the hollow adjusting rod. The other end of the first connecting component is inserted into the accommodating cavity and communicates with the first airbag unit. The second end of the sliding unit is connected to the adjusting unit through the first tube.

3. The X-ray image acquisition device for three-dimensional reconstruction of GIS equipment according to claim 2, characterized in that: The sliding unit includes a movable block, a slider, and a mounting plate. The movable block is housed in the cavity of the hollow adjusting rod and can slide along the cavity of the hollow adjusting rod. The slider is located inside the sliding opening. One side of the slider is connected to the outer wall of the movable block, and the other side of the slider is connected to the mounting plate located outside the hollow adjusting rod. The slider can slide along the extension direction of the sliding opening. One end of the first tube is inserted into the mounting plate, and the other end of the first tube is connected to the adjustment unit. The mounting plate has multiple air holes on the side away from the slider. The multiple air holes are spaced apart along the first direction. The multiple air holes extend along the second direction of the support frame and are all connected to the first tube. The X-ray machine is positioned on the side of the mounting plate opposite to the slider.

4. The X-ray image acquisition device for three-dimensional reconstruction of GIS equipment according to claim 1, characterized in that: The first connecting assembly includes a hollow crossbar, a hollow vertical rod, and a conduit. One end of the hollow crossbar passes through the outer wall of the housing and is inserted into the accommodating cavity and connected to the first airbag unit. The other end of the hollow crossbar is connected to the top end of the hollow vertical rod, and the bottom end of the hollow vertical rod passes through the support frame and is connected to the top end of the X-ray assembly. The bottom end of the conduit is inserted into the X-ray assembly, and the top end of the conduit extends to the outside of the X-ray assembly and passes through the hollow upright and the hollow crossbar in sequence to communicate with the first airbag unit.

5. The X-ray image acquisition device for three-dimensional reconstruction of GIS equipment according to claim 1, characterized in that: The first airbag unit includes a first airbag component and a first elastic component. The first airbag component is disposed within the accommodating cavity, and the first elastic component is disposed within the first airbag component. The top end of the first elastic component is connected to the inner top end of the first airbag component, and the bottom end of the first elastic component is connected to the inner bottom end of the first airbag component.

6. The X-ray image acquisition device for three-dimensional reconstruction of GIS equipment according to claim 1, characterized in that: The adjustment unit includes a vertical rod, a second airbag unit, a compression rod, and an eccentric wheel. The top end of the vertical rod is connected to the bottom end of the first airbag unit. The vertical rod is movable relative to the housing. A groove is formed at the bottom end of the vertical rod. The eccentric wheel is rotatably disposed in the groove. The outer peripheral wall of the eccentric wheel contacts the outer peripheral wall of the GIS equipment. An installation cavity and a connecting hole are formed inside the vertical rod. The installation cavity communicates with the groove through the connecting hole. The second airbag unit is disposed in the installation cavity. The top end of the compression rod is located in the installation cavity and connected to the bottom end of the second airbag unit. The bottom end of the compression rod passes through the connecting hole and is inserted into the groove, and contacts the outer peripheral wall of the eccentric wheel. The compression rod is slidable relative to the vertical rod.

7. The X-ray image acquisition device for three-dimensional reconstruction of GIS equipment according to claim 6, characterized in that: The second airbag unit includes a second airbag component and a second elastic component. The second airbag component is disposed in the mounting cavity, and the second elastic component is disposed in the second airbag component. The top end of the second elastic component is connected to the inner top end of the second airbag component, and the bottom end of the second elastic component is connected to the inner bottom end of the second airbag component.

8. The X-ray image acquisition device for three-dimensional reconstruction of GIS equipment according to claim 1, characterized in that: The control and adjustment assembly further includes a support unit, the bottom end of which is inserted into the accommodating cavity and abuts against the top end of the first airbag unit, the top end of which extends along the first direction to the outside of the housing, and the support unit is threadedly connected to the housing.

9. The X-ray image acquisition device for three-dimensional reconstruction of GIS equipment according to claim 8, characterized in that: The support unit includes a threaded rod and a pressure plate. The pressure plate is located inside the accommodating cavity and abuts against the top of the first airbag unit. The top of the housing has a threaded hole that communicates with the accommodating cavity. The bottom end of the threaded rod passes through the threaded hole and is inserted into the accommodating cavity and connected to the pressure plate. The top end of the threaded rod extends to the outside of the housing.

10. A method for acquiring X-ray images using an X-ray image acquisition device for three-dimensional reconstruction of GIS equipment as described in any one of claims 1 to 9, characterized in that: Includes the following steps: The X-ray image acquisition device is moved to the acquisition area along the centerline of the GIS equipment, and the X-ray component and the imaging component in the X-ray image acquisition device are respectively located on opposite sides of the GIS equipment to complete the mechanical verification before acquisition; The parameters of the X-ray assembly were set using orthogonal experiments based on the on-site conditions. The controller of the control and adjustment component is used to change the transmission angle of the X-ray machine in the X-ray assembly and the digital imaging plate in the imaging assembly to perform multi-directional radiographic acquisition and obtain the image information of the GIS equipment acquired by the imaging assembly. An improved FDK algorithm is used to optimize the 3D imaging reconstruction process of GIS equipment.

Images