Fault detection device and detection method for fuel loading and unloading system of high-temperature gas cooled reactor

Abstract

The embodiment of the invention provides a fault detection device and method for a fuel loading and unloading system of a high-temperature gas cooled reactor, relates to the technical field of nuclear fuel transportation systems, and aims to solve the technical problem that whether a fuel ball blocking fault exists in a pipe section or not cannot be accurately reflected due to the fact that an existing detection method is limited by detection precision and installation positions. The system comprises a detection assembly and a data processing unit, wherein the detection assembly comprises a ray unit and an acquisition unit; the data processing unit comprises an image data processing module and an image data analysis module; wherein the image data processing module is used for receiving an electric signal sent by the acquisition unit and forming a visual digital image; and the image data analysis module is used for identifying and judging the visual digital image and outputting a judgment result. By arranging the detection assembly based on the X rays, the blocking condition in the to-be-detected pipe section can be detected, and the detection precision and accuracy can be further improved through the data processing unit.

Description

Technical Field

[0001] This invention relates to the field of nuclear fuel transport system technology, and more specifically, to a fault detection device and method for a high-temperature gas-cooled reactor fuel loading and unloading system. Background Technology

[0002] High-temperature gas-cooled reactor (HTGR) nuclear power plants are a key option for fourth-generation advanced nuclear energy systems. They employ spherical fuel elements, enabling automatic fuel replacement without reactor shutdown. However, in the HTGR fuel loading and unloading system, malfunctions such as fuel sphere jamming can lead to reactor instability or safety hazards.

[0003] Currently, traditional mechanical and ultrasonic testing methods are limited by testing accuracy and installation location, thus failing to accurately detect whether fuel ball blockage faults exist within the pipeline section. Summary of the Invention

[0004] The present invention aims to provide a fault detection device and method for a high-temperature gas-cooled reactor fuel loading and unloading system, in order to improve the technical problem that existing detection methods are limited by detection accuracy and installation location, thus failing to accurately detect whether there is a fuel ball jamming fault in the pipeline section.

[0005] The embodiments of the present invention can be implemented as follows: In a first aspect, the present invention provides a fault detection device for a high-temperature gas-cooled reactor fuel loading and unloading system, suitable for detecting the position of fuel balls within a section to be detected, in order to determine whether the fuel balls are stuck, including: The detection component includes a radiation unit and a data acquisition unit; wherein the radiation unit is used to emit radiation toward the pipe segment to be detected; and the data acquisition unit is used to receive the radiation passing through the pipe segment to be detected and output an electrical signal. The data processing unit includes an image data processing module and an image data analysis module. The image data processing module is communicatively connected to the acquisition unit and is used to receive electrical signals emitted by the acquisition unit and form a visualized digital image. The image data analysis module is used to identify and judge the visualized digital image and output the judgment result.

[0006] In an optional embodiment, the fault detection device for the high-temperature gas-cooled reactor fuel loading and unloading system further includes: A support assembly, the support assembly including a support body and a plurality of support arms connected to the support body; Multiple support arms are respectively connected to the X-ray unit and the acquisition unit, such that the X-ray unit and the acquisition unit are located on both sides of the tube segment to be inspected.

[0007] In an optional embodiment, the fault detection device for the high-temperature gas-cooled reactor fuel loading and unloading system further includes: The control alarm unit is communicatively connected to the image data analysis module; when the image data analysis module determines that the visualized digital image is faulty, the image data analysis module outputs an alarm signal to the control alarm unit.

[0008] In an optional implementation, the acquisition unit includes a radiation shielding module and an X-ray acquisition module; The radiation shielding module includes a containment enclosure, and the X-ray acquisition module is disposed within the containment enclosure.

[0009] In an optional embodiment, the X-ray acquisition module is a lead-antimony alloy detector array with an antimony content of 5%-15%.

[0010] In an optional embodiment, the containment structure is a ceramic composite material with a boron carbide to silicon carbide mass ratio of 1:1 to 3:1.

[0011] Secondly, the present invention provides a fault detection method for a high-temperature gas-cooled reactor fuel loading and unloading system, which performs detection based on the high-temperature gas-cooled reactor fuel loading and unloading system fault detection device described in any of the foregoing embodiments, including: The detection components are deployed at the corresponding positions on the pipe section to be detected using the support components; The detection component detects the pipe section to be tested and obtains the corresponding electrical signal of the pipe section to be tested. The data processing unit receives the electrical signal of the corresponding pipe section to be tested and forms a visualized digital image; The data processing unit performs fault diagnosis on the visualized digital images and outputs the diagnosis results.

[0012] In an optional implementation, the method of placing the detection component at the corresponding position of the pipe segment to be detected using a support component includes: When the pipe section to be inspected is vertical or horizontal, the support body uses support arms to position the X-ray unit and the acquisition unit on both sides of the pipe section to be inspected, and can move along the direction of the pipe section to be inspected. When the pipe section to be inspected is bent, the support body uses support arms to position the X-ray unit and the acquisition unit on both sides of the pipe section to be inspected, and can rotate in the direction of bending of the pipe section to be inspected.

[0013] In an optional implementation, the method by which the data processing unit judges faults from the visualized digital image is to determine the grayscale distribution of the pipe segment to be inspected through the image data analysis module, including: Use a sliding window to statistically analyze the local gray-level mean after denoising. :

[0014] Where N is the total number of pixels within the window. The pixel grayscale value within the window; Calculate the local grayscale variance ratio of the pipe section to be inspected. :

[0015]

[0016] in, This represents the local grayscale variance within the current sliding window. The global grayscale variance of the entire image; Acquire visualized digital image data under unobstructed conditions, and analyze the local grayscale variance ratio of multiple regions in the visualized digital image. Perform statistical analysis and calculate the mean. and standard deviation :

[0017]

[0018]

[0019] Where n represents the number of local regions captured in the visualized digital image under unobstructed conditions. This represents the mean of the variance ratios of multiple local gray levels under unblocked conditions. The standard deviation of the variance ratio of multiple local gray levels under unblocked conditions; Compare the local grayscale variance ratio of the pipe section to be tested The mean of the variance ratios of multiple local gray levels under the unblocked state And output the judgment result.

[0020] In an optional implementation, the method for outputting the judgment result is as follows: exist Under these conditions, the output judgment result is a jamming fault; exist ≤ Under these conditions, the output judgment result is a no-blockage state;

[0021] Where k is the discrimination threshold coefficient. For adjustment coefficients, The value ranges from 0.5 to 2.0.

[0022] The beneficial effects of the fault detection device and method for the high-temperature gas-cooled reactor fuel loading and unloading system provided in this embodiment of the invention include: The fault detection device for a high-temperature gas-cooled reactor fuel loading and unloading system provided by this invention includes a detection component and a data processing unit. The detection component includes a radiation unit and a data acquisition unit, and the data processing unit includes an image data processing module and an image data analysis module. The radiation unit emits radiation towards the section to be detected, and the data acquisition unit converts the acquired radiation into electrical signals, which are then transmitted to the image data processing module. The image data processing module generates a visualized digital image, which is then analyzed by the image data analysis module to determine the fault and output the result. By arranging the radiation unit and the data acquisition unit, the device can accurately detect whether there are stuck fuel balls in the section to be detected. The image data processing module and the image data analysis module can further improve the accuracy of determining whether there is a stuck fuel ball, thereby improving the overall accuracy and precision of determining whether there is a stuck fuel ball in the section to be detected. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the fault detection device for the high-temperature gas-cooled reactor fuel loading and unloading system provided in this embodiment; Figure 2 This is a schematic diagram of the detection component in the fault detection device for the high-temperature gas-cooled reactor fuel loading and unloading system provided in this embodiment; Figure 3 This is a schematic diagram of the data processing unit in the fault detection device for the high-temperature gas-cooled reactor fuel loading and unloading system provided in this embodiment; Figure 4 This is a flowchart illustrating the fault detection method for the high-temperature gas-cooled reactor fuel loading and unloading system provided in this embodiment.

[0025] Icon: 100 - Pipe segment to be tested; 200-fuel balls; 300 - Detection component; 310 - X-ray unit; 320 - Acquisition unit; 321 - Radiation shielding module; 322 - X-ray acquisition module; 400 - Data processing unit; 410 - Image data processing module; 420 - Image data analysis module; 500 - Support component; 510 - Support body; 520 - Support arm; 600 - Control Alarm Unit. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] In the description of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0030] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0031] It should be noted that, where there is no conflict, the features in the embodiments of the present invention can be combined with each other.

[0032] High-temperature gas-cooled reactors (HTGRs) are a fourth-generation nuclear reactor technology with inherent advantages such as high safety, modular design, environmental friendliness, and industrial heating capabilities. Among them, pebble-bed HTGRs employ non-stop refueling technology, where fuel spheres are recycled through a fuel loading and unloading system. However, during long-term operation, the fuel loading and unloading system may experience malfunctions such as blockages, mechanical component wear, and channel deformation, affecting the smoothness of fuel transport and consequently impacting the stability and safety of reactor operation. Therefore, effectively detecting and diagnosing malfunctions in the fuel loading and unloading system is a critical issue in the operation and maintenance of high-temperature gas-cooled reactors.

[0033] Currently, the following methods are mainly used for fault detection in fuel loading and unloading systems: 1) Mechanical sensor detection: This method determines whether there is jamming or abnormality by measuring the motion state of the transmission mechanism (such as torque and speed). However, this method can only indirectly infer the fault and is limited by the installation location of the sensor, making it difficult to obtain detailed information about the specific fault location.

[0034] 2) Acoustic detection: Ultrasonic or acoustic emission technology is used to monitor the movement of fuel spheres within the transport pipeline. However, the movement path of the fuel spheres is complex, the background noise is high, and the signal is easily interfered with, resulting in limited detection accuracy.

[0035] 3) Thermal imaging detection: This method determines whether a blockage exists by measuring changes in the temperature distribution of the pipeline. However, in the high-temperature gas-cooled reactor environment, external temperature has a significant impact, making it difficult to effectively distinguish between normal and fault conditions.

[0036] The above methods have problems such as low detection accuracy, difficulty in obtaining fuel ball positions in real time, and difficulty in accurately locating the cause of the fault. Therefore, there is an urgent need for a detection device and method that can efficiently and accurately detect faults in the fuel loading and unloading system in the high-temperature gas-cooled reactor environment, especially whether there is fuel ball blockage in the pipe section.

[0037] The following describes in detail the overall structure, working principle, and technical effects of the fault detection device for the high-temperature gas-cooled reactor fuel loading and unloading system provided by the present invention, along with the detailed steps, implementation principles, and technical effects of the supporting fault detection method for the high-temperature gas-cooled reactor fuel loading and unloading system.

[0038] Example 1: This invention provides a fault detection device for a high-temperature gas-cooled reactor fuel loading and unloading system, which is mainly used to detect the position of fuel balls 200 in each test pipe section 100 in the fuel loading and unloading system, thereby determining whether the fuel balls 200 in the pipe section are stuck.

[0039] It should be noted that the fault detection device for the high-temperature gas-cooled reactor fuel loading and unloading system provided by the present invention can also be applied to other fields to determine whether there is a blockage in the pipeline, and is not limited here.

[0040] Please see Figure 1The high-temperature gas-cooled reactor fuel loading and unloading system fault detection device provided by this invention includes a detection component 300 and a data processing unit 400 connected to the detection component 300. The detection component 300 detects the position of the fuel ball 200 in the tube section 100 to be detected using a high-energy X-ray source and transmits the corresponding electrical signal to the data processing unit 400. The data processing unit 400 generates a digital image of the corresponding tube section 100 to be detected and further judges whether there is any blockage in the tube section 100 to be detected based on the digital image.

[0041] Specifically, the detection component 300 includes a radiation unit 310 and a collection unit 320; wherein, the radiation unit 310 is used to emit radiation toward the pipe segment 100 to be detected, and the collection unit 320 is used to receive the radiation passing through the pipe segment 100 to be detected and output an electrical signal.

[0042] In this embodiment, the X-ray unit 310 is a high-energy X-ray source.

[0043] For example, the high-energy X-ray source mentioned above can be the iXRS MesoFocus 450kV X-ray source from Comet, which can generate X-rays with energies above 450keV.

[0044] Please see Figure 1 and Figure 2 In order to enable the acquisition unit 320 to receive transmitted X-rays with high sensitivity in a high-radiation environment, in this embodiment, the acquisition unit 320 includes a radiation shielding module 321 and an X-ray acquisition module 322; wherein, the radiation shielding module 321 includes a containment vessel, which has a certain degree of high-temperature stability and can absorb high-energy gamma rays, thereby reducing the interference of gamma rays in the environment on the X-ray acquisition module 322; the X-ray acquisition module 322 is disposed in the containment vessel.

[0045] Furthermore, the aforementioned X-ray acquisition module 322 is a lead-antimony alloy detector array with an antimony content of 5%-15%; gamma rays in the environment will react with the lead-antimony alloy through photoelectric effect, Compton scattering, etc., thereby absorbing high-energy gamma rays and reducing their interference with the detector array.

[0046] The aforementioned containment structure is a ceramic composite material with a boron carbide to silicon carbide mass ratio of 1:1 to 3:1; the boron carbide to silicon carbide composite material is synthesized by boron isotopes (… 10 B) The efficient neutron capture reaction absorbs thermal and fast neutrons, while the silicon carbide substrate provides the shielding layer with high-temperature stability of over 1000°C; thus enabling the X-ray acquisition module 322 to effectively acquire image signals in a high-radiation environment within the containment.

[0047] Please see Figure 3In this embodiment, the data processing unit 400 includes an image data processing module 410 and an image data analysis module 420. The image data processing module 410 is communicatively connected to the acquisition unit 320 and is used to receive electrical signals from the acquisition unit 320 and ultimately form a visualized digital image. The image data analysis module 420 is used to identify and judge the visualized digital image and output the judgment result to the control alarm unit 600.

[0048] Specifically, the control alarm unit 600 is communicatively connected to the image data analysis module 420. When the image data analysis module 420 determines that the visual digital image is faulty, the image data analysis module 420 outputs an alarm signal to the control alarm unit 600.

[0049] In order to fix the above-mentioned X-ray unit 310 and acquisition unit 320 to both sides of the tube section 100 to be tested, in this embodiment, the high-temperature gas-cooled reactor fuel loading and unloading system fault detection device also includes a support component 500.

[0050] Specifically, the support assembly 500 includes a support body 510 and a plurality of support arms 520 connected to the support body 510; the plurality of support arms 520 are respectively connected to the X-ray unit 310 and the acquisition unit 320, such that the X-ray unit 310 and the acquisition unit 320 are located on both sides of the tube segment 100 to be inspected.

[0051] It should be noted that the support arm 520 can be connected to the support body 510 separately and controlled independently to support the X-ray unit 310 and the acquisition unit 320; or it can be set as a whole, such as a C-arm; as long as the X-ray unit 310 and the acquisition unit 320 can be located on both sides of the tube segment 100 to be inspected, so that the acquisition unit 320 can receive the X-rays from the X-ray unit 310 and pass through the tube segment 100 to be inspected.

[0052] The fault detection device for the high-temperature gas-cooled reactor fuel loading and unloading system provided in this embodiment can achieve at least the following technical effects: By arranging the X-ray unit 310 and the acquisition unit 320, it is possible to accurately detect whether there is a stuck fuel ball 200 inside the pipe section 100 to be inspected. On the one hand, the X-ray unit 310 and the acquisition unit 320 can be configured on both sides of the pipe section 100 to be inspected through the support component 500, which is convenient for configuration. At the same time, combined with the advantages of X-ray detection technology such as strong penetration ability, applicability to complex structures, and intuitive imaging, it is possible to accurately obtain the blockage situation inside the pipe section with high detection accuracy and rapid response. On the other hand, by setting the radiation shielding module 321, the interference of gamma rays in the environment on the X-ray acquisition module 322 can be further reduced, thereby improving the detection accuracy.

[0053] The image data processing module 410 and the image data analysis module 420 can further improve the accuracy of judging whether the fuel ball 200 is blocked, thereby improving the overall accuracy and precision of judging whether the fuel ball 200 is blocked in the pipe section 100 to be tested.

[0054] Example 2: Please see Figure 4 This embodiment provides a fault detection method for a high-temperature gas-cooled reactor fuel loading and unloading system, which is based on the high-temperature gas-cooled reactor fuel loading and unloading system fault detection device provided in Embodiment 1, and includes the following steps: S100, The detection component 300 is placed at the corresponding position of the pipe section 100 to be detected by the support component 500; In this embodiment, the method of placing the detection component 300 at the corresponding position of the pipe section 100 to be detected by the support component 500 includes: When the pipe section 100 to be inspected is vertical or horizontal, the support body 510, through the support arm 520, positions the X-ray unit 310 and the acquisition unit 320 on both sides of the pipe section 100 to be inspected, and can move along the direction of the pipe section 100 to be inspected. When the pipe section 100 to be inspected is bent, the support body 510 uses the support arm 520 to position the X-ray unit 310 and the acquisition unit 320 on both sides of the pipe section 100 to be inspected, and can rotate in the direction of bending of the pipe section 100 to be inspected.

[0055] S200, The detection component 300 detects the pipe section 100 to be detected and obtains the corresponding electrical signal of the pipe section 100 to be detected; S300 and data processing unit 400 receive the electrical signals of the corresponding pipe segment 100 to be tested and form a visualized digital image; In this embodiment, the image data processing module 410 is used to form a visual digital image. The method for forming a digital image is roughly the same as the prior art, including signal preprocessing, analog-to-digital conversion, image reconstruction and correction, digital image format and encoding, and other steps.

[0056] In order to improve the reliability and accuracy of the image, in this embodiment, after the image data processing module 410 forms a visualized digital image, an adaptive median filtering denoising algorithm is used to denoise the image. This algorithm can dynamically adjust the size of the filtering window according to the gray-scale statistical characteristics of the local image, thereby effectively suppressing noise while preserving the image edge details, thus improving the reliability and accuracy of the image.

[0057] S400 and data processing unit 400 perform fault diagnosis on the visualized digital image and output the diagnosis result.

[0058] In this embodiment, the method by which the data processing unit 400 performs fault judgment on the visualized digital image is to determine the regional grayscale distribution of the pipe segment 100 to be inspected through the image data analysis module 420, including: Use a sliding window to statistically analyze the local gray-level mean after denoising. :

[0059] Where N is the total number of pixels within the window. The pixel grayscale value within the window; Calculate the local grayscale variance ratio of the 100 region of the pipe section to be inspected. :

[0060]

[0061] in, This represents the local grayscale variance within the current sliding window. The global grayscale variance of the entire image; Acquire visualized digital image data under unobstructed conditions, and analyze the local grayscale variance ratio of multiple regions in the visualized digital image. Perform statistical analysis and calculate the mean. and standard deviation :

[0062]

[0063]

[0064] in, n To visualize the number of local regions in a digital image under unobstructed conditions. This represents the mean of the variance ratios of multiple local gray levels under unblocked conditions. The standard deviation of the variance ratio of multiple local gray levels under unblocked conditions; Compare the local grayscale variance ratio of the 100 area of ​​the pipe section to be tested. The mean of the ratios of multiple local grayscale variances under the unblocked state And output the judgment result.

[0065] In this embodiment, the method for outputting the judgment result is as follows: exist Under these conditions, the output judgment result is a jamming fault; exist ≤ Under these conditions, the output judgment result is a no-blockage state;

[0066] in, k To determine the threshold coefficient, This is an adjustment factor used to balance the risks of false alarms and false negatives. The value ranges from 0.5 to 2.0.

[0067] In this embodiment, if the judgment result is a jamming fault, the control alarm unit 600 outputs an alarm signal.

[0068] The fault detection method for the fuel loading and unloading system of a high-temperature gas-cooled reactor provided in this embodiment can achieve at least the following technical effects: The present invention converts the electrical signal from the acquisition unit 320 into a visual digital image through the image data processing module 410. At the same time, it uses an adaptive median filtering denoising algorithm to process the obtained visual digital image, thereby obtaining a reliable and accurate image. This facilitates the image data analysis module 420 to identify and judge the image, and finally outputs an accurate pipe blockage judgment result. In addition, digital image processing significantly improves detection efficiency, enhances system reliability and operational security, and facilitates subsequent maintenance and management.

[0069] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A fault detection device for a high-temperature gas-cooled reactor fuel loading and unloading system, characterized in that, Suitable for detecting the position of fuel balls (200) within the test section (100) to determine whether the fuel balls (200) are stuck, including: The detection component (300) includes a radiation unit (310) and a collection unit (320); wherein the radiation unit (310) is used to emit radiation toward the pipe segment (100) to be detected; and the collection unit (320) is used to receive the radiation passing through the pipe segment (100) to be detected and output an electrical signal. The data processing unit (400) includes an image data processing module (410) and an image data analysis module (420). The image data processing module (410) is communicatively connected to the acquisition unit (320). The image data processing module (410) is used to receive electrical signals emitted by the acquisition unit (320) and form a visualized digital image. The image data analysis module (420) is used to identify and judge the visualized digital image and output the judgment result.

2. The fault detection device for the high-temperature gas-cooled reactor fuel loading and unloading system according to claim 1, characterized in that, The fault detection device for the high-temperature gas-cooled reactor fuel loading and unloading system also includes: Support assembly (500), the support assembly (500) includes a support body (510) and a plurality of support arms (520) connected to the support body (510). Multiple support arms (520) are connected to the X-ray unit (310) and the acquisition unit (320) respectively, such that the X-ray unit (310) and the acquisition unit (320) are located on both sides of the tube segment (100) to be tested.

3. The fault detection device for the high-temperature gas-cooled reactor fuel loading and unloading system according to claim 1, characterized in that, The fault detection device for the high-temperature gas-cooled reactor fuel loading and unloading system also includes: A control alarm unit (600) is communicatively connected to the image data analysis module (420); when the image data analysis module (420) determines that the visualized digital image is faulty, the image data analysis module (420) outputs an alarm signal to the control alarm unit (600).

4. The fault detection device for the high-temperature gas-cooled reactor fuel loading and unloading system according to claim 1, characterized in that, The acquisition unit (320) includes a radiation shielding module (321) and an X-ray acquisition module (322); The radiation shielding module (321) includes a containment enclosure, and the X-ray acquisition module (322) is disposed inside the containment enclosure.

5. The fault detection device for the high-temperature gas-cooled reactor fuel loading and unloading system according to claim 4, characterized in that, The X-ray acquisition module (322) is a lead-antimony alloy detector array with an antimony content of 5%-15%.

6. The fault detection device for the high-temperature gas-cooled reactor fuel loading and unloading system according to claim 5, characterized in that, The containment structure is a ceramic composite material with a boron carbide to silicon carbide mass ratio of 1:1 to 3:

1.

7. A fault detection method for a high-temperature gas-cooled reactor fuel loading and unloading system, characterized in that, The detection is performed using the fault detection device for the high-temperature gas-cooled reactor fuel loading and unloading system as described in any one of claims 1-6, including: The detection component (300) is positioned at the corresponding location on the pipe section (100) to be detected by the support component (500); The detection component (300) detects the pipe section (100) to be detected and obtains the electrical signal of the corresponding pipe section (100); The data processing unit (400) receives the electrical signal of the corresponding pipe segment (100) to be tested and forms a visualized digital image; The data processing unit (400) performs fault judgment on the visualized digital image and outputs the judgment result.

8. The fault detection method for the fuel loading and unloading system of a high-temperature gas-cooled reactor according to claim 7, characterized in that, The method of placing the detection component (300) at the corresponding position of the pipe section (100) to be detected by means of the support component (500) includes: When the pipe section (100) to be inspected is vertical or horizontal, the support body (510) uses the support arm (520) to place the X-ray unit (310) and the acquisition unit (320) on both sides of the pipe section (100) to be inspected, and can move along the direction of the pipe section (100); When the pipe section (100) to be inspected is bent, the support body (510) uses the support arm (520) to position the X-ray unit (310) and the acquisition unit (320) on both sides of the pipe section (100) to be inspected, and can rotate in the direction of bending of the pipe section (100).

9. The fault detection method for the fuel loading and unloading system of a high-temperature gas-cooled reactor according to claim 7, characterized in that, The data processing unit (400) uses a method to determine faults in the visualized digital image by performing regional grayscale distribution analysis on the pipe section (100) to be inspected through the image data analysis module (420), including: Use a sliding window to statistically analyze the local gray-level mean after denoising. : in, N The total number of pixels within the window. The pixel grayscale value within the window; Calculate the local grayscale variance ratio of the pipe section (100) to be tested. : in, This represents the local grayscale variance within the current sliding window. The global grayscale variance of the entire image; Acquire visualized digital image data under unobstructed conditions, and analyze the local grayscale variance ratio of multiple regions in the visualized digital image. Perform statistical analysis and calculate the mean. and standard deviation : in, n To visualize the number of local regions in a digital image under unobstructed conditions. This represents the mean of the variance ratios of multiple local gray levels under unblocked conditions. The standard deviation of the variance ratio of multiple local gray levels under unblocked conditions; Compare the local grayscale variance ratio of the pipe section (100) to be tested. The mean of the ratios of multiple local grayscale variances under the unblocked state And output the judgment result.

10. The fault detection method for the fuel loading and unloading system of a high-temperature gas-cooled reactor according to claim 9, characterized in that, The method for outputting the judgment result is as follows: exist Under these conditions, the output judgment result is a jamming fault; exist ≤ Under these conditions, the output judgment result is a no-blockage state; in, k To determine the threshold coefficient, For adjustment coefficients, The value ranges from 0.5 to 2.0.

Images