Electric pulse infrared thermal image panoramic detection device and use method thereof
Through the electric pulse infrared thermal imaging panoramic detection device, panoramic detection of three-dimensional metal components is achieved using a conical soft shell and bogie assembly, which solves the problems of high detection cost, low efficiency and high missed detection rate in the existing technology, and realizes efficient, low-cost and accurate non-destructive detection of three-dimensional components.
Patent Information
- Application Number
- CN202511050835.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-29
- Publication Date
- 2025-09-26
AI Technical Summary
Existing technologies in three-dimensional inspection have problems such as high inspection cost, low efficiency, and high missed detection rate. This is especially true for non-destructive inspection of columnar and three-dimensional metal components such as bolts and pipes. The cost of simultaneous shooting with multiple thermal imagers is high, and the inspection efficiency of a single thermal imager is low. It is difficult to simultaneously capture the temperature fields at different locations, resulting in missed defects.
An electric pulse infrared thermal imaging panoramic detection device is used, including a conical soft shell, a bogie assembly, an infrared thermal imaging device, an electric pulse generator and a computer. Through the reflection characteristics and internal pressure adjustment of the conical soft shell, the total reflection of the thermal wave on the side of the test piece and the full capture of the temperature field are achieved. The bogie assembly is used to adjust the electrode position and fix the test piece, and three-dimensional image reconstruction and data processing are performed by the computer.
It realizes the real-time synchronous measurement of the temperature field on the side of cylindrical and three-dimensional metal components such as bolts and pipes, improves the detection speed and efficiency, reduces the detection cost, reduces the impact of the outside world on the test, improves the detection accuracy and the ability to identify defects, and solves the problems of detection efficiency and accuracy in existing technologies.
Smart Images
Figure CN120702606A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of infrared non-destructive testing technology, in particular to an electric pulse infrared thermal imaging panoramic detection device and a use method thereof. Background Art
[0002] Infrared nondestructive testing (NDT) is a new nondestructive testing method. It applies a pulsed current to the specimen, leveraging the current concentration effect and Joule heating to raise the temperature at the defect site significantly higher than that at the undefected site. The temperature field transmitted to the specimen surface is captured by a dynamic, high-speed infrared thermal imager, achieving the desired NDT. This testing method boasts advantages such as fast measurement speed and intuitive results, making it well-suited for plate and block specimens. However, testing cylindrical and three-dimensional metal components, such as bolts and pipes, still relies on plate-based testing methods. While capturing the temperature field at the plate surface is sufficient for plate-based components, capturing the temperature field from a single direction is insufficient for three-dimensional structures. Images from multiple positions and angles (e.g., from the front, back, left, and right sides of the component) are required to capture the entire surface temperature field. Therefore, capturing the entire surface temperature field requires multiple thermal imagers simultaneously capturing images from different positions and angles, or a single thermal imager positioned around the specimen to capture images from multiple positions and angles. While the simultaneous capture of multiple thermal imagers can effectively identify defects quickly within a single thermal stimulus, the high cost of thermal imagers makes the overall testing expensive. The second test method, while requiring only a single thermal imager, cannot simultaneously capture the temperature field at different locations, particularly the temperature field at the initial thermal stimulus (at the initial moment of thermal shock, the temperature at the defect is highest and most easily detected). This can lead to missing the optimal capture window, easily leading to missed defects and low testing efficiency. Furthermore, even if the temperature field at different locations at different times is recorded, without special markings on the component, it will be difficult to distinguish which location captured the image.
[0003] Existing inspection methods for nondestructive testing of three-dimensional metal components, such as bolts and cutting tools, present the following major challenges: 1) Reducing testing costs: Existing inspection methods typically require three or more thermal imagers to achieve multi-dimensional simultaneous inspection, resulting in high investment and testing costs. In contrast, the method of the present invention only requires a single thermal imager to simultaneously inspect the entire side of a component (such as a bolt), significantly reducing inspection costs. 2) Improving inspection efficiency and defect detection rates: Existing inspection methods employ a single thermal imager to inspect the entire specimen, but these methods can still result in missed inspections, difficulty determining defect locations, and low inspection efficiency. The present invention solves this problem by enabling simultaneous inspection of the entire specimen surface with a single thermal imager, avoiding these issues and improving inspection speed and efficiency. 3) The specimen is placed within a conical shell, reducing the impact of external heat sources on the test. Summary of the Invention
[0004] In view of this, the purpose of the present invention is to provide an electric pulse infrared thermal imaging panoramic detection device and a method of using the same, so as to achieve total reflection of thermal waves on the side of the test piece and full capture of the temperature field at the same time.
[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical solution: an electric pulse infrared thermal imaging panoramic detection device, comprising a conical soft shell (16) with openings at both ends, an upper end cover (9) and a lower end cover (5) are respectively provided at both ends of the conical soft shell (16), the upper end cover (9) is fixed to one end of the conical soft shell (16) through a first clamp (13), and the lower end cover (5) is fixed to the other end of the conical soft shell (16) through a second clamp (22); The conical soft shell (16) is provided with an air inlet and an air outlet (25); the air inlet is connected to a buffer tank (7) via a pipe (6), and the buffer tank (7) is connected to a fan (8); It also includes a specimen fixing assembly (19) and a bogie assembly (17), wherein the specimen fixing assembly (19) is arranged inside the conical soft shell (16) and is used to fix the specimen (18); the bogie assembly (17) includes an upper electrode (171) and a lower electrode (1711), and the upper electrode (171) and the lower electrode (1711) are respectively connected to two ends of the specimen (18); The apparatus further comprises an infrared thermal imaging device (12), an electric pulse generator (1) and a computer (15); the upper electrode (171) and the lower electrode (1711) are connected to the electric pulse generator (1) via electrode wires (2), respectively; the infrared thermal imaging device (12) is located above the specimen (18) and is fixed to the upper end cover (9); the infrared thermal imaging device (12) is connected to the computer (15) via a data line, and the dynamic thermal image of the specimen (18) after thermal excitation is stored and analyzed on the computer (15).
[0006] In a preferred embodiment, the bogie assembly (17) includes an upper electrode (171), an upper electrode insulating member (172), a lower electrode (1711), a lower electrode insulating member (1722), an upper bogie (173), upper and lower bogie connecting members (174), and a lower bogie (175); One end of the upper bogie (173) is connected to the upper electrode insulating member (172), the upper electrode insulating member (172) is arranged closely against the upper electrode (171), and the other end of the upper bogie (173) is connected to the upper and lower bogie connecting member (174); One end of the lower bogie (175) is connected to the lower electrode insulating component (1722), the lower electrode insulating component (1722) is arranged closely against the lower electrode (1711), and the other end of the lower bogie (175) is connected to the upper and lower bogie connecting member (174); The upper and lower bogie connecting members (174) connect the upper bogie (173) and the lower bogie (175) and adjust the relative position between the upper bogie (173) and the lower bogie (175).
[0007] In a preferred embodiment, the upper and lower bogie connecting members (174) are specifically threaded connection sleeves, and the ends of the upper bogie (173) and the lower bogie (175) connected to the upper and lower bogie connecting members (174) are both provided with threaded connection parts. By cooperating with the threaded connection parts and the threaded connection sleeves, the relative positions between the upper bogie (173) and the lower bogie (175) are adjusted so that the upper electrode (171) and the lower electrode (1711) are closely attached to the upper and lower ends of the specimen (18), or are separated from the upper and lower ends of the specimen (18).
[0008] In a preferred embodiment, the upper electrode insulating component (172) and the lower electrode insulating component (1722) are both provided with a clearance hole, and the interiors of the upper bogie (173) and the lower bogie (175) are hollow; the first electrode wire (201) connecting the upper electrode (171) passes through the clearance hole of the upper electrode insulating component (172) and the interior of the upper bogie (173) and is connected to the electric pulse generator (1) outside the conical soft shell (16); the second motor wire (202) connecting the lower electrode (1711) passes through the clearance hole of the lower electrode insulating component (1722) and the interior of the lower bogie (175) and is connected to the electric pulse generator (1) outside the conical soft shell (16).
[0009] In a preferred embodiment, the specimen fixing assembly (19) includes a first fixing plate (191), a second fixing plate (192), a first bolt (193) and a second bolt (194); the first fixing plate (191) is fixed on the lower end cover (5), and the specimen (18) is placed between the first fixing plate (191) and the second fixing plate (192); bolt holes are provided at both ends of the first fixing plate (191) and the second fixing plate (192); the first bolt (193) and the second bolt (194) are respectively fixed to the two ends of the first fixing plate (191) and the second fixing plate (192); and by tightening the bolts, the specimen (18) can be fixed between the first fixing plate (191) and the second fixing plate (192).
[0010] In a preferred embodiment, the upper end cover (9) and the first clamp (13) are sealed via a first wedge-shaped sealing gasket (14); and the lower end cover (5) and the second clamp (22) are sealed via a second wedge-shaped sealing gasket (21).
[0011] In a preferred embodiment, the invention further comprises an inner sleeve (4) and a handle (3); the lower end cover (5) is provided with a clearance channel, the inner sleeve 4 is fixed inside the clearance channel, the lower bogie (175) passes through the inner sleeve (4) and extends outside the conical soft shell (16), and the end of the lower bogie (175) is connected to the handle (3); by rotating the handle (3), the lower bogie (175) is driven to rotate, so that the lower bogie (175) rotates relative to the upper and lower bogie connecting member (174), thereby adjusting the relative position of the upper bogie (173) and the lower bogie (175).
[0012] In a preferred embodiment, a packing seal is provided between the inner sleeve (4) and the lower bogie (175).
[0013] In a preferred embodiment, the upper end cover (9) is provided with an exhaust valve (10) and a safety relief device (11).
[0014] The present invention also provides a method for using the electric pulse infrared thermal imaging panoramic detection device, which uses the electric pulse infrared thermal imaging panoramic detection device and includes the following steps: (1) Fix the test piece (18) to the bogie assembly (17) and the test piece fixing assembly (19); (2) starting the fan (8) and opening the buffer tank (7) to adjust the gas pressure in the conical soft shell (16) to a threshold value; (3) Turn on the computer (15), debug the dynamic infrared thermal imaging processing system to the working state, and turn on the infrared thermal imaging device (12); (4) starting the electric pulse generator (1) to thermally excite the test piece (18), and simultaneously recording the surface temperature field of the test piece (18) by the infrared thermal imaging device (12); (5) Adjust the vertical position of the infrared thermal imager to achieve the best observation of the test piece (18); (6) Analyzing the dynamic temperature field on the test piece (18) after the electric pulse excitation captured by the infrared thermal imaging device (12) by a computer (15), constructing a three-dimensional image, and determining the area of temperature anomaly and the time of occurrence; (7) Based on the analysis results of the computer (15), determine whether additional tests are required. The process of additional tests is consistent with the above steps (1) to (7).
[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The temperature field of the sides of cylindrical and general three-dimensional metal components such as bolts and pipes can be measured instantly and synchronously, greatly improving the detection speed and efficiency; 2. By obtaining the temperature field of different positions of the component at the same time, the convenience of identifying the existence and location of defects is improved; 3. Improve the comparability of test results and the detection rate of defects through the real-time synchronous thermal images obtained; 4. The cone angle of the cone shell is adjustable, and the thermal imager can be moved up and down, which can optimize the shooting effect of the thermal image and improve the resolution of the thermal image for defects. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 Schematic diagram of the overall structure of a preferred embodiment of the present invention; Figure 2 This is a schematic structural diagram of a specimen fixing assembly according to a preferred embodiment of the present invention; Figure 3 A schematic structural diagram of a bogie assembly according to a preferred embodiment of the present invention; Figure 4Schematic diagram of the partial connection structure of the lower end cover of a preferred embodiment of the present invention. DETAILED DESCRIPTION
[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0018] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present application belongs.
[0019] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application; as used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form, and it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or their combinations.
[0020] An electric pulse infrared thermal imaging panoramic detection device, reference Figure 1-4 , including a conical soft shell 16 with openings at both ends, an upper end cover 9 and a lower end cover 5 are respectively provided at both ends of the conical soft shell 16, the upper end cover 9 is fixed to one end of the conical soft shell 16 by a first clamp 13, and the lower end cover 5 is fixed to the other end of the conical soft shell 16 by a second clamp 22; The conical soft shell 16 is provided with an air inlet and an air outlet 25; the air inlet is connected to a buffer tank 7 via a pipe 6, and the buffer tank 7 is connected to a fan 8; The apparatus further includes a specimen fixing assembly 19 and a bogie assembly 17. The specimen fixing assembly 19 is disposed inside the conical soft shell 16 and is used to fix the specimen 18. The bogie assembly 17 includes an upper electrode 171 and a lower electrode 1711, which are connected to both ends of the specimen 18 respectively. It also includes an infrared thermal imaging device 12, an electric pulse generator 1 and a computer 15; the upper electrode 171 and the lower electrode 1711 are respectively connected to the electric pulse generator 1 through electrode wires 2; the infrared thermal imaging device 12 is located above the specimen 18 and fixed on the upper end cover 9; the infrared thermal imaging device 12 is connected to the computer 15 through a data cable, and the dynamic thermal image of the specimen 18 after thermal excitation is stored and analyzed on the computer 15.
[0021] It also includes support angle steels 20 and channel steels 23 , wherein three support angle steels 20 and three channel steels 23 are provided and are evenly distributed. The support angle steels 20 and channel steels 23 support the outer shell of the entire detection device; it also includes a pressure gauge 24 , which is provided on the air outlet 25 .
[0022] The bogie assembly 17 includes an upper electrode 171, an upper electrode insulating member 172, a lower electrode 1711, a lower electrode insulating member 1722, an upper bogie 173, upper and lower bogie connectors 174, and a lower bogie 175; One end of the upper bogie 173 is connected to the upper electrode insulating member 172 , and the upper electrode insulating member 172 is arranged closely against the upper electrode 171 . The other end of the upper bogie 173 is connected to the upper and lower bogie connecting member 174 . One end of the lower bogie 175 is connected to the lower electrode insulating member 1722 , and the lower electrode insulating member 1722 is arranged closely against the lower electrode 1711 . The other end of the lower bogie 175 is connected to the upper and lower bogie connecting member 174 . The upper and lower bogie connectors 174 connect the upper bogie 173 and the lower bogie 175 and adjust the relative positions between the upper bogie 173 and the lower bogie 175 to meet the testing needs of three-dimensional metal components of various sizes.
[0023] The upper and lower bogie connecting pieces 174 are specifically threaded connecting sleeves. The ends of the upper bogie 173 and the lower bogie 175 connected to the upper and lower bogie connecting pieces 174 are both provided with threaded connecting parts. Through the matching connection of the threaded connecting parts and the threaded connecting sleeves, the relative position between the upper bogie 173 and the lower bogie 175 is adjusted so that the upper electrode 171 and the lower electrode 1711 are tightly attached to the upper and lower ends of the specimen 18, or are detached from the upper and lower ends of the specimen 18.
[0024] The upper electrode insulating component 172 and the lower electrode insulating component 1722 are both provided with a clearance hole, and the interior of the upper bogie 173 and the lower bogie 175 are hollow; the first electrode wire (201) connecting the upper electrode 171 passes through the clearance hole of the upper electrode insulating component 172 and the interior of the upper bogie 173 and is connected to the electric pulse generator 1 outside the conical soft shell 16; the second motor wire (202) connecting the lower electrode 1711 passes through the clearance hole of the lower electrode insulating component 1722 and the interior of the lower bogie 175 and is connected to the electric pulse generator 1 outside the conical soft shell 16.
[0025] The specimen fixing assembly 19 includes a first fixing plate 191, a second fixing plate 192, a first bolt 193 and a second bolt 194; the first fixing plate 191 is fixed on the lower end cover 5, and the specimen 18 is placed between the first fixing plate 191 and the second fixing plate 192. Bolt holes are provided at both ends of the first fixing plate 191 and the second fixing plate 192. The first bolt 193 and the second bolt 194 are respectively fixed to the two ends of the first fixing plate 191 and the second fixing plate 192. By tightening the bolts, the specimen 18 can be fixed between the first fixing plate 191 and the second fixing plate 192.
[0026] The upper end cover 9 and the first clamp 13 are sealed via a first wedge-shaped sealing gasket 14 ; the lower end cover 5 and the second clamp 22 are sealed via a second wedge-shaped sealing gasket 21 .
[0027] It also includes an inner sleeve 4 and a handle 3; the lower end cover 5 is provided with a make way channel, the inner sleeve 4 is fixed inside the make way channel, the lower bogie 175 passes through the inner sleeve 4 and extends out of the outside of the conical soft shell 16, and the end of the lower bogie 175 is connected to the handle 3; by rotating the handle 3, the lower bogie 175 is driven to rotate, and the upper bogie 173 and the lower bogie 175 are driven to rotate around the axis to adjust the position of the upper bogie 173 and the lower bogie 175, so as to avoid the upper bogie 173 and the lower bogie 175 covering the temperature field of part of the test piece 18 due to their fixed position.
[0028] A packing seal is provided between the inner sleeve 4 and the lower bogie 175 .
[0029] The upper end cover 9 is provided with an exhaust valve 10 and a safety relief device 11 .
[0030] Computer 15 then processes the panoramic data of the temperature field to produce a three-dimensional visualization. First, the thermal images captured by the infrared thermal imager undergo data preprocessing, temperature calibration, image stitching, and 3D reconstruction. The resulting visualization is then output. Data preprocessing involves removing noise using methods such as median filtering and Gaussian filtering, depending on the noise type. Because thermal imager measurements are typically affected by factors such as ambient temperature, emissivity, and reflected temperature, temperature calibration is required to ensure data accuracy. This temperature calibration is performed through statistical analysis of the temperature field, including temperature gradient analysis and hotspot detection, to reproduce the actual temperature data. Since the infrared images captured by the infrared thermal imager are two-dimensional and the actual scene is panoramic, image stitching is required. The infrared images are segmented and then stitched together using an image stitching algorithm to form a complete temperature field. Finally, 3D reconstruction is performed. Multi-view stereo (MVS) is used to obtain a 3D model of the component. The temperature data is then mapped onto a 3D mesh. The 2D thermal image data is combined with the 3D geometry, and the temperature distribution is rendered using pseudo-color to produce a visualized 3D image.
[0031] Directions: (1) Press Figure 1 As shown, the test piece 18 is fixed; (2) the conical soft shell 16 and the wedge-shaped gasket are put on the lower end cover 5, and the conical shell is fastened to the lower head with a clamp; (3) the fan 8 is started, and the exhaust valve of the buffer tank 7 is opened to adjust the gas pressure in the conical soft shell 16 to a specific value; (4) the computer 15 is turned on, the dynamic infrared thermal imaging processing system is debugged to the working state, and the infrared thermal imaging device 12 is turned on; (5) the electric pulse generator 1 is started to thermally excite the test piece 18, and the infrared thermal imaging device 12 records the test piece at the same time. 18 surface temperature field; (6) To meet the detection requirements, the pressure in the conical soft shell 16 should be adjusted to ensure that the cone angle of the cone shell reaches the predetermined value, and at the same time, the vertical position of the infrared thermal imaging device 12 should be appropriately adjusted to achieve the best observation of the test piece 18; (7) The dynamic temperature field on the test piece 18 after the electric pulse excitation is captured by the infrared thermal imaging device 12 is analyzed by the computer 15, and a three-dimensional image is constructed to determine the area of temperature anomaly and the time of occurrence; (8) Based on the analysis results of the computer 15, it is determined whether additional testing is required. The process of additional testing is consistent with the above steps.
[0032] The present invention adopts a specially made retractable conical reflective shell with a high infrared reflectivity coating on the surface, and utilizes the reflection focusing characteristics of the conical shell to reflect the infrared radiation within a cone angle range of 45° to 75° (such as Figure 1As shown), the total reflection of the heat wave on the side of the specimen and the full capture of the temperature field are achieved at the same time. By utilizing the deformation principle of the special conical shell under the action of internal pressure, the cone angle of the conical shell is adjusted by adjusting the pressure inside the conical shell (<0.1MPa). When the pressure inside the conical shell is greater, the cone angle becomes larger, thereby achieving the adjustment of the length and width of the thermal image (zoom in or out). Specifically, it is: a special conical shell with good elasticity is made, which is easy to deform under the action of internal pressure. During the test, the specimen 18 is placed at the center of the conical soft shell 16, and the infrared thermal imaging device 12 is placed above the specimen 18. By utilizing the focusing characteristics of the conical soft shell 16, the heat wave on the side of the specimen 18 after thermal excitation can be radiated to the inner wall of the conical soft shell 16 and reflected to the infrared thermal imaging device 12 above the specimen 18, so that the infrared thermal imaging device 12 can capture the entire side of the specimen at the same time (360 0 full viewing angle). In addition, according to the law of internal pressure and wall thickness variation of the conical soft shell 16 under iso-stress conditions, a variable-wall-thickness conical shell is designed to ensure the deformation difference between the large and small ends of the conical shell. In this way, by injecting gas into the conical soft shell 16 or discharging gas, the pressure in the conical soft shell 16 is adjusted, and the cone angle of the conical soft shell 16 is increased or decreased, thereby adjusting the size and resolution of the thermal image, optimizing the observation of the surface temperature field of the specimen, and improving the recognition of abnormally high temperatures corresponding to defects. In addition, a three-dimensional image of the specimen is constructed by a computer, the infrared image is enhanced and denoised, and temperature calibration and parameter correction are performed. Panoramic data splicing is performed on the three-dimensional component, and finally the cone surface reflection image captured by the infrared instrument is converted into the surface temperature field image of the specimen. That is, the test process of the surface temperature field of the specimen is as follows: the infrared radiation of the specimen surface is transmitted to the surface of the conical shell, and after the surface temperature field of the conical shell is captured by the infrared instrument, the surface temperature field of the component is restored by image reconstruction.
[0033] In summary, this method places the specimen 18 in a special conical soft shell 16 for testing, thereby realizing instant and synchronous full-field detection of the temperature field on the side of the three-dimensional specimen 18 in the conical soft shell 16, and performing three-dimensional reconstruction of the temperature field of the three-dimensional component through the computer 15, providing a new, efficient and reliable detection method for non-destructive testing of the three-dimensional specimen 18, and at the same time greatly promoting the application of infrared thermal imaging non-destructive testing methods based on electric pulse thermal excitation.
Claims
1. An electric pulse infrared thermal imaging panoramic detection device, characterized in that: The invention comprises a conical soft shell (16) with openings at both ends, an upper end cover (9) and a lower end cover (5) are respectively provided at both ends of the conical soft shell (16), the upper end cover (9) is fixed to one end of the conical soft shell (16) by a first clamp (13), and the lower end cover (5) is fixed to the other end of the conical soft shell (16) by a second clamp (22); The conical soft shell (16) is provided with an air inlet and an air outlet (25); the air inlet is connected to a buffer tank (7) via a pipe (6), and the buffer tank (7) is connected to a fan (8); It also includes a specimen fixing assembly (19) and a bogie assembly (17), wherein the specimen fixing assembly (19) is arranged inside the conical soft shell (16) and is used to fix the specimen (18); the bogie assembly (17) includes an upper electrode (171) and a lower electrode (1711), and the upper electrode (171) and the lower electrode (1711) are respectively connected to two ends of the specimen (18); The apparatus further comprises an infrared thermal imaging device (12), an electric pulse generator (1) and a computer (15); the upper electrode (171) and the lower electrode (1711) are connected to the electric pulse generator (1) via electrode wires (2), respectively; the infrared thermal imaging device (12) is located above the specimen (18) and is fixed to the upper end cover (9); the infrared thermal imaging device (12) is connected to the computer (15) via a data line, and the dynamic thermal image of the specimen (18) after thermal excitation is stored and analyzed on the computer (15).
2. The electric pulse infrared thermal imaging panoramic detection device according to claim 1, characterized in that: The bogie assembly (17) includes an upper electrode (171), an upper electrode insulating member (172), a lower electrode (1711), a lower electrode insulating member (1722), an upper bogie (173), upper and lower bogie connecting members (174), and a lower bogie (175); One end of the upper bogie (173) is connected to the upper electrode insulating member (172), the upper electrode insulating member (172) is arranged closely against the upper electrode (171), and the other end of the upper bogie (173) is connected to the upper and lower bogie connecting member (174); One end of the lower bogie (175) is connected to the lower electrode insulating component (1722), the lower electrode insulating component (1722) is arranged closely against the lower electrode (1711), and the other end of the lower bogie (175) is connected to the upper and lower bogie connecting member (174); The upper and lower bogie connecting members (174) connect the upper bogie (173) and the lower bogie (175) and adjust the relative position between the upper bogie (173) and the lower bogie (175).
3. The electric pulse infrared thermal imaging panoramic detection device according to claim 2, characterized in that: The upper and lower bogie connecting pieces (174) are specifically threaded connection sleeves, and the ends of the upper bogie (173) and the lower bogie (175) connected to the upper and lower bogie connecting pieces (174) are both provided with threaded connection parts. By cooperating with the threaded connection parts and the threaded connection sleeves, the relative positions between the upper bogie (173) and the lower bogie (175) are adjusted, so that the upper electrode (171) and the lower electrode (1711) are closely attached to the upper and lower ends of the test piece (18), or are separated from the upper and lower ends of the test piece (18).
4. The electric pulse infrared thermal imaging panoramic detection device according to claim 3, characterized in that: The upper electrode insulating component (172) and the lower electrode insulating component (1722) are both provided with a clearance hole, and the interiors of the upper bogie (173) and the lower bogie (175) are hollow; the first electrode wire (201) connected to the upper electrode (171) passes through the clearance hole of the upper electrode insulating component (172) and the interior of the upper bogie (173) and is connected to the electric pulse generator (1) outside the conical soft shell (16); the second motor wire (202) connected to the lower electrode (1711) passes through the clearance hole of the lower electrode insulating component (1722) and the interior of the lower bogie (175) and is connected to the electric pulse generator (1) outside the conical soft shell (16).
5. The electric pulse infrared thermal imaging panoramic detection device according to claim 1, characterized in that: The specimen fixing assembly (19) includes a first fixing plate (191), a second fixing plate (192), a first bolt (193) and a second bolt (194); the first fixing plate (191) is fixed on the lower end cover (5), and the specimen (18) is placed between the first fixing plate (191) and the second fixing plate (192); bolt holes are provided at both ends of the first fixing plate (191) and the second fixing plate (192); the first bolt (193) and the second bolt (194) are respectively fixed at both ends of the first fixing plate (191) and the second fixing plate (192); and by tightening the bolts, the specimen (18) can be fixed between the first fixing plate (191) and the second fixing plate (192).
6. The electric pulse infrared thermal imaging panoramic detection device according to claim 1, characterized in that: The upper end cover (9) and the first clamp (13) are sealed via a first wedge-shaped sealing gasket (14); and the lower end cover (5) and the second clamp (22) are sealed via a second wedge-shaped sealing gasket (21).
7. The electric pulse infrared thermal imaging panoramic detection device according to claim 2, characterized in that: The invention also includes an inner sleeve (4) and a handle (3); the lower end cover (5) is provided with a clearance channel, the inner sleeve 4 is fixed inside the clearance channel, the lower bogie (175) passes through the inner sleeve (4) and extends outside the conical soft shell (16), and the end of the lower bogie (175) is connected to the handle (3); by rotating the handle (3), the lower bogie (175) is driven to rotate, so that the lower bogie (175) rotates relative to the upper and lower bogie connecting member (174), thereby adjusting the relative position of the upper bogie (173) and the lower bogie (175).
8. The electric pulse infrared thermal imaging panoramic detection device according to claim 7, characterized in that: A packing seal is provided between the inner sleeve (4) and the lower bogie (175).
9. The electric pulse infrared thermal imaging panoramic detection device according to claim 1, characterized in that: The upper end cover (9) is provided with an exhaust valve (10) and a safety relief device (11).
10. A method for using an electric pulse infrared thermal imaging panoramic detection device, characterized in that The electric pulse infrared thermal imaging panoramic detection device according to any one of claims 1 to 9 is used, comprising the following steps: 1) Fixing the test piece (18) to the bogie assembly (17) and the test piece fixing assembly (19); 2) starting the fan (8) and opening the buffer tank (7) to adjust the gas pressure in the conical soft shell (16) to a threshold value; 3) Turn on the computer (15), debug the dynamic infrared thermal imaging processing system to a working state, and turn on the infrared thermal imaging device (12); 4) starting the electric pulse generator (1) to thermally excite the test piece (18), and simultaneously recording the surface temperature field of the test piece (18) by the infrared thermal imaging device (12); 5) Adjust the vertical position of the infrared thermal imager to achieve the best observation of the test piece (18); 6) Analyzing the dynamic temperature field on the test piece (18) after the electric pulse excitation captured by the infrared thermal imaging device (12) by a computer (15), constructing a three-dimensional image, and determining the area of temperature anomaly and the time of occurrence; 7) Based on the analysis results of the computer (15), determine whether additional tests are required. The process of additional tests is consistent with the above steps 1) to 6).