Radiation shielding structure penetration detection method, penetration detection system and fusion device

Abstract

The application provides a fusion depth detection method and system of a radiation shielding structure and a fusion device, and relates to the technical field of fusion device manufacturing technology. Support columns are sequentially arranged in multiple partitions, and each partition is connected to the support column by welding. The fusion depth detection method comprises the following steps: installing a detection probe on the support column; controlling the detection probe to emit detection ultrasonic waves towards the welding position of the multiple partitions and the support column; obtaining the depth of the upper surface and the depth of the lower surface of the welding seam corresponding to each partition; and obtaining the fusion depth of the welding seam corresponding to each partition according to the depth of the upper surface and the depth of the lower surface. The fusion depth detection method of the radiation shielding structure can obtain the depth of the upper surface and the depth of the lower surface of the welding seam corresponding to each partition through the detection probe, so as to obtain the fusion depth of the welding seam corresponding to each partition. The method can improve the accuracy of the detection result, is simple to operate, can check the welding quality, ensures the welding reliability, and improves the use reliability of the radiation shielding structure.

Description

Technical Field

[0001] This invention relates to the field of fusion device manufacturing technology, and in particular to a method for detecting the melting depth of a radiation shielding structure, a system for detecting the melting depth of a radiation shielding structure, and a fusion device. Background Technology

[0002] Nuclear fusion devices are equipped with vacuum chambers, and the vacuum chambers must be manufactured in a way that effectively reduces or eliminates the penetration of internal neutrons. Therefore, a shielding structure can be installed between the inner and outer walls of the vacuum chamber. The shielding structure can be installed between the inner and outer walls of the vacuum chamber by means of support columns. The main body of the shielding structure is made of multi-layer austenitic stainless steel plates, with the spacing between each layer of stainless steel plates set to be less than 5 mm. Each layer of stainless steel plates is filled with a non-full penetration weld to the support columns, that is, the root of the weld is required to be fully penetrated, and the upper part of the weld does not completely fill the gap between the steel plates and the support columns. According to the thickness requirements of the austenitic stainless steel plates, the penetration depth of the weld must not be less than two-thirds of the plate thickness.

[0003] After welding multiple layers of stainless steel plates and support columns, the thickness of the weld seam needs to be inspected to ensure the reliability of the weld. Existing inspection methods can be carried out by visual inspection or endoscopy. However, the spacing between each layer of stainless steel plates is small, and the endoscope probe cannot inspect the entire weld seam, resulting in missed inspections. Visual inspection can only inspect the weld seam of the top or bottom layer, and the inspection error is large, so there is room for improvement. Summary of the Invention

[0004] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a method for detecting the weld penetration of a radiation shielding structure. This method is simple to operate, can detect the weld penetration of each layer, and can improve the accuracy of the detection results, thereby ensuring welding reliability and improving the reliability of the radiation shielding structure.

[0005] According to an embodiment of the present invention, a method for detecting the penetration depth of a radiation shielding structure includes a support column and a plurality of stacked partitions. The support column is sequentially inserted through the plurality of partitions, and each partition is welded to the support column. The penetration depth detection method includes:

[0006] The detection probe is installed on the support column;

[0007] The detection probe is controlled to emit detection ultrasonic waves toward the weld joints between the partitions and the support columns;

[0008] Obtain the depth of the upper surface and the depth of the lower surface of the weld corresponding to each partition;

[0009] The weld penetration depth corresponding to each partition is obtained based on the depth of the upper surface and the depth of the lower surface.

[0010] According to the embodiment of the present invention, the method for detecting the weld penetration of a radiation shielding structure obtains the depth of the upper and lower surfaces of the weld corresponding to each partition by using a detection probe, thereby obtaining the weld penetration of each partition. This improves the accuracy of the detection results, is simple to operate, and can inspect the welding quality, thus ensuring the reliability of the welding and improving the reliability of the radiation shielding structure. The method also has better performance and a wider range of applications.

[0011] According to some embodiments of the present invention, the method for detecting the weld penetration of a radiation shielding structure, wherein obtaining the depth of the upper surface and the depth of the lower surface of the weld corresponding to each partition includes:

[0012] Control the detection probe to move radially along the support column;

[0013] During the movement of the detection probe, depth peak data of the detection ultrasonic wave on the upper surface of the weld and depth peak data on the lower surface of the weld are acquired respectively.

[0014] The method for detecting the penetration depth of a radiation shielding structure according to some embodiments of the present invention further includes:

[0015] The positions corresponding to the depth peak data on the upper surface of the weld and the depth peak data on the lower surface of the weld are marked as the standard front distance positions.

[0016] The detection probe is controlled to rotate about the axis of the support column at the standard front distance position;

[0017] During the rotation of the detection probe, the depth of the upper surface and the depth of the lower surface at multiple positions in the circumferential direction of the weld are obtained.

[0018] According to some embodiments of the present invention, the method for detecting the penetration depth of a radiation shielding structure, wherein mounting the detection probe to the support column includes:

[0019] The detection probe is installed on the end face of one end of the support column;

[0020] Adjust the position of the detection probe so that it is spaced apart from the peripheral wall of the support column.

[0021] The method for detecting the penetration depth of a radiation shielding structure according to some embodiments of the present invention further includes, before installing the detection probe onto the support column:

[0022] Based on the specifications of the support column and the partition, obtain the detection probe of the corresponding specifications.

[0023] According to some embodiments of the present invention, the method for detecting the penetration depth of a radiation shielding structure, wherein obtaining the detection probe of corresponding specifications based on the specifications of the support column and the partition plate includes:

[0024] Obtain the material and thickness of the support column and the partition, and obtain the number of layers of the partition;

[0025] Based on the material, thickness, and number of layers, the detection angle, detection frequency, and wafer area of ​​the corresponding detection probe are obtained;

[0026] The corresponding detection probe is obtained based on the detection angle, detection frequency, and wafer area.

[0027] The method for detecting the penetration depth of a radiation shielding structure according to some embodiments of the present invention further includes, before installing the detection probe onto the support column:

[0028] The detection accuracy of the detection probe is verified.

[0029] According to some embodiments of the present invention, the method for detecting the penetration depth of a radiation shielding structure includes verifying the detection accuracy of the detection probe, which includes:

[0030] The detection probe is installed on a standard comparison block;

[0031] The detection probe is controlled to move relative to the comparison test block, and detection data of the comparison test block is acquired;

[0032] The detection data is compared with the standard data of the comparison test block to determine the detection accuracy of the detection probe.

[0033] According to some embodiments of the present invention, a method for detecting the penetration depth of a radiation shielding structure, wherein the detection probe is connected to a configuration instrument, the configuration instrument is provided with a measurement gate, and the penetration depth detection method further includes:

[0034] Adjust the measurement gate of the instrument corresponding to the detection probe, and select the depth of the upper and lower surfaces of the weld corresponding to the partition of the target layer.

[0035] This invention also proposes a system for detecting the penetration depth of a radiation shielding structure.

[0036] The penetration depth detection system for radiation shielding structures according to embodiments of the present invention is applicable to the penetration depth detection method for radiation shielding structures described in any of the above claims.

[0037] The present invention also proposes a fusion device.

[0038] According to an embodiment of the present invention, a fusion device includes a fusion depth detection system with a radiation shielding structure as described above. The fusion device is provided with a vacuum chamber, and an installation cavity is formed between the inner wall and the outer wall of the vacuum chamber. The radiation shielding structure is installed in the installation cavity and is used to shield neutron radiation.

[0039] The fusion device, the melting depth detection system of the radiation shielding structure, and the melting depth detection method of the radiation shielding structure mentioned above all have the same advantages over the prior art, and will not be repeated here.

[0040] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0041] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0042] Figure 1 This is a flowchart illustrating the penetration depth detection method for a radiation shielding structure according to an embodiment of the present invention. Figure 1 ;

[0043] Figure 2 This is a flowchart illustrating the penetration depth detection method for a radiation shielding structure according to an embodiment of the present invention. Figure 2 ;

[0044] Figure 3 This is a flowchart illustrating the penetration depth detection method for a radiation shielding structure according to an embodiment of the present invention. Figure 3 ;

[0045] Figure 4 This is a flowchart illustrating the penetration depth detection method for a radiation shielding structure according to an embodiment of the present invention. Figure 4 ;

[0046] Figure 5 This is a flowchart illustrating the penetration depth detection method for a radiation shielding structure according to an embodiment of the present invention. Figure 5 ;

[0047] Figure 6 This is a flowchart illustrating the penetration depth detection method for a radiation shielding structure according to an embodiment of the present invention. Figure 6 ;

[0048] Figure 7 This is a flowchart illustrating the penetration depth detection method for a radiation shielding structure according to an embodiment of the present invention. Figure 7 ;

[0049] Figure 8 This is a waveform diagram of the penetration depth detection method for a radiation shielding structure according to an embodiment of the present invention;

[0050] Figure 9 This is a schematic diagram of the radiation shielding structure according to an embodiment of the present invention;

[0051] Figure 10 This is a cross-sectional view of a radiation shielding structure according to an embodiment of the present invention;

[0052] Figure 11 This is a schematic diagram of the structure of the comparative test block according to an embodiment of the present invention;

[0053] Figure 12 This is a cross-sectional view of a comparative test block according to an embodiment of the present invention.

[0054] Figure label:

[0055] Radiation shielding structure 100,

[0056] Support column 1, end face 11, partition plate 2, weld 3, upper surface 31, lower surface 32.

[0057] Detection probe 4, comparison block 5, standard hole 51. Detailed Implementation

[0058] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0059] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the 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 the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0060] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0061] The following is for reference. Figures 1-8 A method for detecting the penetration depth of a radiation shielding structure 100 according to an embodiment of the present invention is described. This method is simple to operate, can detect the penetration depth of each weld layer 3, and can improve the accuracy of the detection results, thereby ensuring welding reliability and improving the reliability of the radiation shielding structure 100 in use.

[0062] like Figures 1-8 As shown, according to an embodiment of the present invention, a method for detecting the penetration depth of a radiation shielding structure 100 includes a support column 1 and a plurality of stacked partitions 2. The support column 1 is sequentially inserted through the plurality of partitions 2, and each partition 2 is welded to the support column 1. The penetration depth detection method includes:

[0063] S1. Install the detection probe 4 onto the support column 1;

[0064] S2. Control the detection probe 4 to emit detection ultrasonic waves toward the welding points of multiple partitions 2 and support columns 1;

[0065] S3. Obtain the depth of the upper surface 31 and the depth of the lower surface 32 of the weld 3 corresponding to each partition 2;

[0066] S4. Based on the depth of the upper surface 31 and the depth of the lower surface 32, obtain the penetration depth of the weld 3 corresponding to each partition 2.

[0067] The radiation shielding structure 100 is installed inside the fusion device, which is equipped with a vacuum chamber. The vacuum chamber is the "reaction vessel" in the fusion device that enables controlled fusion. Through the synergy of functions such as ultra-high vacuum, magnetic confinement, thermal management, and fuel control, it provides the necessary conditions for the stable existence of plasma and the occurrence of fusion reaction. The radiation shielding structure 100 can be installed between the inner and outer walls of the vacuum chamber to shield the high-energy neutrons generated by the fusion reaction, thereby ensuring that external equipment and personnel are protected from radiation damage and improving safety.

[0068] Specifically, the radiation shielding structure 100 is provided with a support column 1, which can be a cylindrical structure, etc. The support column 1 can be fixed between the inner wall and the outer wall of the vacuum chamber, thereby ensuring the installation reliability of the radiation shielding structure 100. The radiation shielding structure 100 is also provided with partitions 2, and multiple partitions 2 are provided. The multiple partitions 2 are stacked in parallel. In this embodiment, the distance between two adjacent partitions 2 is set to be less than 5mm, and each partition 2 is provided with a through hole at a corresponding position. The support column 1 can be sequentially inserted into the through hole of each partition 2, and the inner peripheral wall of the through hole of each partition 2 can be welded to the outer peripheral wall of the support column 1. This allows multiple partitions 2 to be fixed between the inner wall and the outer wall of the vacuum chamber through the support column 1. The gap between multiple partitions 2 can form a cooling channel for the flow of coolant, thereby removing the heat absorbed by the vacuum chamber wall and the heat load of plasma radiation, ensuring the reliability of use.

[0069] Furthermore, a detection probe 4 can be installed on the support column 1. The detection probe 4 can be constructed as a longitudinal wave angle probe. The detection probe 4 can be installed at one end of the support column 1 and perform ultrasonic testing on the welds 3 of multiple partitions 2 along the axial direction. During the testing process, the installation end of the detection probe 4 is first fixed to one end of the support column 1. Then, the detection probe 4 is opened by the configuration instrument connected to the detection probe 4, so that the detection probe 4 can emit detection ultrasonic waves along the axial direction to multiple welds 3 of multiple partitions 2. The emitted detection ultrasonic waves can feed back the depth value of each weld 3 to the configuration instrument. The depth value of the weld 3 includes the depth of the upper surface 31 and the depth of the lower surface 32 of the weld 3.

[0070] Furthermore, based on the depth of the upper surface 31 and the depth of the lower surface 32, the penetration depth of the weld 3 corresponding to each partition 2 is obtained. That is, along the axial direction of the support column 1, the depth of the lower surface 32 of the weld 3 is greater than the depth of the upper surface 31 of the weld 3. The penetration depth of the weld 3 can be obtained by subtracting the depth of the upper surface 31 of the weld 3 from the depth of the lower surface 32 of the weld 3 being detected. In this way, the depth of the lower surface 32 and the depth of the upper surface 31 of the weld 3 corresponding to each partition 2 can be measured by the detection probe 4, thereby obtaining the penetration depth of the weld 3 corresponding to each partition 2, improving the accuracy of the detection results, simplifying the operation, and inspecting the welding quality, thereby ensuring the welding reliability and improving the reliability of the radiation shielding structure 100.

[0071] According to the radiation shielding structure penetration detection method of the present invention, the penetration depth of the weld 3 corresponding to each partition 2 is obtained by using the detection probe 4 to obtain the penetration depth of the weld 3 corresponding to each partition 2. This improves the accuracy of the detection results, is simple to operate, and can inspect the welding quality, thereby ensuring the welding reliability and improving the reliability of the radiation shielding structure 100. The method has better performance and wider applicability.

[0072] In some embodiments, such as Figure 2 As shown, obtaining the depth of the upper surface 31 and the lower surface 32 of the weld 3 corresponding to each partition 2 includes:

[0073] S31. Control the detection probe 4 to move radially along the support column 1;

[0074] S32. During the movement of the detection probe 4, the depth peak data of the detection ultrasonic wave on the upper surface 31 and the lower surface 32 of the weld 3 are acquired respectively.

[0075] Specifically, the detection probe 4 can be installed at one end of the support column 1 to detect the penetration depth of the weld 3 corresponding to each partition 2. Before detecting the penetration depth of the weld 3, the detection probe 4 can be installed at one end of the support column 1 and the detection probe 4 can be controlled to move radially along the support column 1. The detection probe 4 is connected to a configuration instrument. When the detection probe 4 detects the penetration depth, the detection probe 4 can feed back the waveform diagrams of the depth of the upper surface 31 and the lower surface 32 of the weld 3 corresponding to each partition 2 to the configuration instrument. When the user moves the detection probe 4, the waveform diagram will also change accordingly.

[0076] In this way, the user can acquire the depth peak data of the ultrasonic wave on the upper surface 31 and the lower surface 32 of the weld 3 respectively during the movement of the detection probe 4. Figure 8 As shown, users can obtain the highest wave data corresponding to each layer of weld 3 by observing the waveform diagram. When the peak data is the largest, that is, the echo amplitude of the ultrasonic wave is the strongest. At this time, the ultrasonic wave emitted by the detection probe 4 can be set perpendicular to the weld 3, so as to obtain the best reflection angle of the ultrasonic wave and ensure the accuracy of the detection results.

[0077] In some embodiments, such as Figure 3 As shown, the method for detecting the penetration depth of radiation shielding structures also includes:

[0078] S5. Mark the positions corresponding to the depth peak data of the upper surface 31 of weld 3 and the depth peak data of the lower surface 32 of weld 3 as the standard front distance positions.

[0079] S6. Control the detection probe 4 to rotate around the axis of the support column 1 at the standard front distance position;

[0080] S7. During the rotation of the detection probe 4, the depth of the upper surface 31 and the depth of the lower surface 32 at multiple positions in the circumferential direction of the weld 3 are obtained.

[0081] Specifically, before the user detects the penetration depth of weld 3 using the detection probe 4, the position of the detection probe 4 needs to be adjusted to obtain the highest wave data. At this time, the positions corresponding to the depth peak data of the upper surface 31 and the depth peak data of the lower surface 32 of weld 3 can be marked as the standard front distance position. This position can obtain the optimal reflection angle of the ultrasonic wave to ensure the accuracy of the detection results. The user can control the detection probe 4 to rotate around the axis of the support column 1 at the standard front distance position. The weld 3 is set around the circumference of the support column 1. By rotating the detection probe 4 around the axis of the support column 1, the detection probe 4 can detect the penetration depth of the annular weld 3 at various points along the circumference.

[0082] In this way, the standard front distance position of the detection probe 4 can be obtained by adjusting it once, and the depth of the upper surface 31 and the lower surface 32 of the weld 3 can be obtained from the standard front distance position to obtain the penetration depth of the weld 3 from the circumference upward. This ensures the accuracy of the penetration depth detection results of the weld 3 from the circumference upward, and the operation is convenient and can improve the detection efficiency.

[0083] In some embodiments, such as Figure 4 As shown, mounting the detection probe 4 onto the support column 1 includes:

[0084] S11. Install the detection probe 4 on the end face 11 of one end of the support column 1;

[0085] S12. Adjust the position of the detection probe 4 so that the detection probe 4 is spaced apart from the peripheral wall of the support column 1.

[0086] Specifically, such as Figure 9 As shown, one end of the support column 1 is provided with an end face 11, which is perpendicular to the axial direction of the support column 1. A detection probe 4 is installed on the end face 11 of the support column 1, and the detection probe 4 can move to a different position on the end face 11 to obtain a standard front distance position. By positioning the end face 11 perpendicular to the axial direction of the support column 1, the distance between the support column 1 and its axis is equal when the support column 1 rotates circumferentially according to the standard front distance position. This ensures the accuracy of the melt depth detection at various points. Figure 10 As shown, a conical platform is provided at one end of the support column 1 near the end face 11. The end face 11 is formed on the conical platform, so that the radial dimension of the end face 11 is smaller than the radial dimension of the support column 1. This ensures that the detection probe 4 is spaced apart from the peripheral wall of the support column 1 when the end face 11 moves, thus guaranteeing the accuracy of the detection results of the detection probe 4.

[0087] In some embodiments, the method for detecting the penetration depth of a radiation shielding structure further includes, before installing the detection probe 4 on the support column 1, obtaining a detection probe 4 of the corresponding specifications according to the specifications of the support column 1 and the partition 2.

[0088] Specifically, before installing the detection probe 4 on the support column 1, the specifications of the detection probe 4 need to be selected. When there are many layers of partition 2 or the materials of the support column 1 and partition 2 are difficult to penetrate, the detection depth of the detection probe 4 needs to be increased, that is, a detection probe 4 with a larger detection depth needs to be selected. When there are few layers of partition 2 or the materials of the support column 1 and partition 2 are easy to penetrate, the detection depth of the detection probe 4 can be reduced accordingly, that is, a detection probe 4 with a smaller detection depth can be selected. In this way, the reliability of the detection probe 4 can be guaranteed so as to detect the penetration depth of the weld 3 corresponding to each layer of partition 2.

[0089] In some embodiments, such as Figure 5 As shown, based on the specifications of the support column 1 and the partition plate 2, the detection probe 4 of the corresponding specifications is obtained, including:

[0090] S01. Obtain the material and thickness of the support column 1 and the partition 2, and obtain the number of layers of the partition 2;

[0091] S02. Based on the material, thickness, and number of layers, obtain the detection angle, detection frequency, and wafer area of ​​the corresponding detection probe 4;

[0092] S03. Obtain the corresponding detection probe 4 based on the detection angle, detection frequency, and wafer area.

[0093] Specifically, a detection probe 4 of corresponding specifications can be obtained according to the specifications of the support column 1 and the partition 2. The specifications of the support column 1 and the partition 2 include the material and thickness of the support column 1 and the partition 2, as well as the number of layers of the partition 2. In this embodiment, both the support column 1 and the partition 2 can be made of austenitic stainless steel, and the partition 2 is made of multiple layers, with the multiple partitions 2 spaced apart. The distance between two adjacent partitions 2 is set to be not less than 5mm. When the material of the support column 1 and the partition 2 is difficult to penetrate, and the thickness of the partition 2 is thick and the number of layers is large, a detection probe 4 with a larger detection depth should be selected. When the material of the support column 1 and the partition 2 is easy to penetrate, and the thickness of the partition 2 is thin and the number of layers is small, a detection probe 4 with a smaller detection depth can be selected to ensure the reliability of the detection probe 4.

[0094] Furthermore, the detection angle, detection frequency, and wafer area of ​​the corresponding detection probe 4 can be obtained based on the material and thickness of the support column 1 and the partition 2, as well as the number of layers of the partition 2. Based on the detection angle, detection frequency, and wafer area, the corresponding detection probe 4 is obtained. In this embodiment, the detection probe 4 is constructed as a small-angle longitudinal wave angle probe with an angle set to 5°~10°, the frequency of the detection probe 4 is set to 0.5MHz~1.5MHz, and the size of the wafer inside the detection probe 4 is set to be no less than 25mm. 2 .

[0095] The angle of the detection probe 4 is inversely proportional to the detection depth, and the frequency and crystal size of the detection probe 4 are directly proportional to the detection depth. That is, when a detection probe 4 with a larger detection depth is required, a detection probe 4 with a smaller angle and a larger frequency and crystal size can be selected. When a detection probe 4 with a smaller detection depth is required, a detection probe 4 with a larger angle and a smaller frequency and crystal size can be selected to meet the requirements of different specifications of radiation shielding structures 100 and ensure the reliability of the detection probe 4.

[0096] In some embodiments, the method for detecting the penetration depth of a radiation shielding structure further includes verifying the detection accuracy of the detection probe 4 before installing the detection probe 4 onto the support column 1.

[0097] Specifically, the detection probe 4 may experience wear and damage during use and installation, which will reduce the detection accuracy of the detection probe 4. Before installing the detection probe 4 on the support column 1, the detection accuracy of the detection probe 4 needs to be verified to ensure the detection accuracy of the detection probe 4, thereby ensuring the accuracy of the detection of the melt depth.

[0098] In some embodiments, such as Figure 6 As shown, the verification of the detection accuracy of detection probe 4 includes:

[0099] S04. Install the detection probe 4 onto the standard comparison block 5;

[0100] S05. Control the movement of the detection probe 4 relative to the comparison test block 5 and acquire the detection data of the comparison test block 5;

[0101] S06. Compare the test data with the standard data of the comparison test block 5 to determine the detection accuracy of the test probe 4.

[0102] Specifically, the detection probe 4 is equipped with a standard comparison block 5. The size of the comparison block 5 is fixed. The comparison block 5 is equipped with multiple standard holes 51, which are evenly spaced along a straight line. The diameter and depth of the multiple standard holes 51 are all the same. In this embodiment, for example... Figures 11-12 As shown, the length and width of the comparison test block 5 are set to 350mm and 200mm respectively. There are ten standard holes 51, which are evenly spaced along the width direction of the comparison test block 5. The distance between the axes of two adjacent standard holes 51 is set to 20mm, and the distance between the axes of the standard holes 51 at both ends and the long side of the comparison test block 5 is 10mm. The diameter of the standard hole 51 is set to 2mm.

[0103] During calibration, the detection probe 4 can be installed on a standard comparison block 5, and the detection probe 4 can be moved on the comparison block 5 to obtain the waveform of the maximum wave. The detection data of the comparison block 5, namely the size data of the standard hole 51 in the comparison block 5, can be obtained based on the waveform. The detection data detected by the detection probe 4 is compared with the standard data of the comparison block 5. When the detection data matches the standard data, the detection accuracy of the detection probe 4 meets the usage standard, and the detection probe 4 can be installed on the support column 1 for testing. When the detection data does not match the standard data, the detection accuracy of the detection probe 4 is low, and the detection probe 4 needs to be replaced and calibrated again to ensure the detection accuracy of the detection probe 4 and the accuracy of the detection data.

[0104] In some embodiments, the detection probe 4 is connected to a configuration instrument, which is equipped with a measurement gate. The weld penetration detection method further includes: adjusting the measurement gate of the configuration instrument corresponding to the detection probe 4, and selecting the depth of the upper surface 31 and the depth of the lower surface 32 of the weld 3 corresponding to the partition 2 of the target layer number.

[0105] Specifically, the detection probe 4 is connected to a configuration instrument. The detection probe 4 can feed back the detected data to the configuration instrument, and the configuration instrument can adjust the detection probe 4. The configuration instrument is equipped with a measurement gate. When the detection probe 4 performs detection, it can obtain the penetration depth data of the weld 3 of the multi-layer partition 2. The user can adjust the measurement gate of the configuration instrument to obtain the depth of the upper surface 31 and the lower surface 32 of the partition 2 of the target layer. That is, in actual use, if the user needs the data of the weld 3 of the third layer partition 2, the depth of the upper surface 31 and the lower surface 32 of the weld 3 of the third layer partition 2 can be retrieved through the measurement gate. Then, the penetration depth of the weld 3 of that layer can be calculated through the depth of the upper surface 31 and the lower surface 32. The user can also retrieve the data of one layer or adjacent layers at the same time through the measurement gate for convenient detection.

[0106] In actual testing, such as Figure 7 As shown, the complete penetration depth testing process for the radiation shielding structure 100 is as follows:

[0107] Based on the material and thickness of the support column 1 and the partition 2, as well as the number of layers of the partition 2, the parameters such as the detection angle, detection frequency, and wafer area of ​​the detection probe 4 are selected to ensure the detection reliability of the detection probe 4. The selected detection probe 4 is placed on the comparison test block 5 to obtain the detection data of the detection probe 4. The detection data is compared with the standard data of the comparison test block 5. When the two data match, the detection accuracy of the detection probe 4 meets the usage requirements. Then, the detection probe 4 can be installed on the end face 11 of the support column 1.

[0108] The user can adjust the installation position of the detection probe 4 on the end face 11 so that the waveform obtained by the detection probe 4 is at its highest point, thereby improving the accuracy of the detection results. At this time, the penetration depth of the weld 3 can be calculated based on the depth of the upper surface 31 and the lower surface 32 corresponding to the weld 3 of each layer of partition 2 being tested. The user can select the depth of the upper surface 31 and the lower surface 32 corresponding to the weld 3 of the required number of layers of partition 2 by adjusting the measuring gate, so as to accurately obtain the penetration depth of the weld 3 of the required number of layers. In addition, the user can also rotate the detection probe 4 at the standard front distance position around the axis of the support column 1 to obtain the depth of the upper surface 31 and the lower surface 32 at multiple positions in the circumferential direction of the weld 3, thereby obtaining the penetration depth of each layer of weld 3 at various points along the circumferential direction. The operation is convenient and can improve the accuracy of the detection results.

[0109] This invention also proposes a system for detecting the penetration depth of a radiation shielding structure.

[0110] The penetration depth detection system for radiation shielding structures according to embodiments of the present invention is applicable to the penetration depth detection method for radiation shielding structures described above.

[0111] According to the radiation shielding structure penetration detection system of the present invention, the penetration depth of the weld 3 corresponding to each partition 2 is obtained by the detection probe 4, which obtains the penetration depth of the weld 3 corresponding to each partition 2. This improves the accuracy of the detection results, is simple to operate, and can inspect the welding quality, thereby ensuring the welding reliability and improving the reliability of the radiation shielding structure 100. The system has better performance and wider applicability.

[0112] The present invention also proposes a fusion device.

[0113] According to an embodiment of the present invention, a fusion device includes a fusion depth detection system of the radiation shielding structure 100 described above. The fusion device is provided with a vacuum chamber, and an installation cavity is formed between the inner wall and the outer wall of the vacuum chamber. The radiation shielding structure 100 is installed in the installation cavity and is used to shield neutron radiation.

[0114] Specifically, the fusion device is equipped with a vacuum chamber, which has an inner wall and an outer wall. The inner wall and the outer wall of the vacuum chamber are spaced apart to form an installation cavity. The radiation shielding structure 100 can be installed in the installation cavity, so that the vacuum chamber can shield the high-energy neutrons produced by the fusion reaction, thereby ensuring that external equipment and personnel are protected from radiation damage and improving the safety of use. The radiation shielding structure 100 is equipped with a support column 1 and multiple partitions 2 that are equally spaced apart. The support column 1 can be fixed between the inner wall and the outer wall of the vacuum chamber, thereby ensuring the installation reliability of the radiation shielding structure 100. The multiple partitions 2 are welded to the support column 1, thereby allowing the multiple partitions 2 to be fixed in the vacuum chamber through the support column 1, ensuring the reliability of use.

[0115] According to the fusion device of the present invention, the depth of the upper surface 31 and the depth of the lower surface 32 of the weld 3 corresponding to each partition 2 are obtained by the detection probe 4, so as to obtain the penetration depth of the weld 3 corresponding to each partition 2, thereby improving the accuracy of the detection results, simplifying the operation, and inspecting the welding quality, thereby ensuring the welding reliability, improving the reliability of the radiation shielding structure 100, and having a better effect and wider applicability.

[0116] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0117] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A method for detecting the penetration depth of a radiation shielding structure, characterized in that, The radiation shielding structure (100) includes a support column (1) and multiple stacked partitions (2). The support column (1) is sequentially inserted through the multiple partitions (2), and each partition (2) is welded to the support column (1). The penetration depth detection method includes: The detection probe (4) is installed on the end face (11) of one end of the support column (1). Adjust the position of the detection probe (4) so ​​that the detection probe (4) is spaced apart from the peripheral wall of the support column (1); Control the detection probe (4) to emit detection ultrasonic waves toward the weld joints of the multiple partitions (2) and the support column (1); Control the detection probe (4) to move radially along the support column (1); During the movement of the detection probe (4), the depth peak data of the detection ultrasonic wave on the upper surface (31) of the weld (3) corresponding to each partition (2) and the depth peak data on the lower surface (32) of the weld (3) are acquired respectively. The positions corresponding to the depth peak data of the upper surface (31) of the weld (3) and the depth peak data of the lower surface (32) of the weld (3) are marked as the standard front distance positions. Control the detection probe (4) to rotate around the axis of the support column (1) at the standard front distance position; During the rotation of the detection probe (4), the depth of the upper surface (31) and the depth of the lower surface (32) at multiple positions in the circumferential direction of the weld (3) are obtained; Based on the depth of the upper surface (31) and the depth of the lower surface (32), the penetration depth of the weld (3) corresponding to each partition (2) is obtained.

2. The method for detecting the penetration depth of a radiation shielding structure according to claim 1, characterized in that, This also includes the process of installing the detection probe (4) onto the support column (1): According to the specifications of the support column (1) and the partition (2), obtain the detection probe (4) of the corresponding specifications.

3. The method for detecting the penetration depth of a radiation shielding structure according to claim 2, characterized in that, The step of obtaining the detection probe (4) of the corresponding specifications according to the specifications of the support column (1) and the partition (2) includes: Obtain the material and thickness of the support column (1) and the partition (2), and obtain the number of layers of the partition (2); Based on the material, thickness, and number of layers, the detection angle, detection frequency, and wafer area of ​​the corresponding detection probe (4) are obtained; Based on the detection angle, detection frequency and wafer area, the corresponding detection probe (4) is obtained.

4. The method for detecting the penetration depth of a radiation shielding structure according to claim 1, characterized in that, This also includes the process of installing the detection probe (4) onto the support column (1): The detection accuracy of the detection probe (4) is verified.

5. The method for detecting the penetration depth of a radiation shielding structure according to claim 4, characterized in that, The verification of the detection accuracy of the detection probe (4) includes: The detection probe (4) is installed on a standard comparison block (5); Control the movement of the detection probe (4) relative to the comparison test block (5) and acquire the detection data of the comparison test block (5); The detection data is compared with the standard data of the comparison test block (5) to determine the detection accuracy of the detection probe (4).

6. The method for detecting the penetration depth of a radiation shielding structure according to claim 1, characterized in that, The detection probe (4) is connected to a configuration instrument, which is equipped with a measurement gate. The melt depth detection method further includes: Adjust the measurement gate of the instrument corresponding to the detection probe (4), and select the depth of the upper surface (31) and the lower surface (32) of the weld (3) corresponding to the partition (2) of the target layer.

7. A penetration depth detection system for a radiation shielding structure, characterized in that, The penetration depth detection system is applicable to the penetration depth detection method of the radiation shielding structure (100) according to any one of claims 1-6.

8. A fusion device, characterized in that, The fusion device includes a fusion depth detection system comprising the radiation shielding structure (100) of claim 7, wherein the fusion device is provided with a vacuum chamber, and an installation cavity is formed between the inner wall and the outer wall of the vacuum chamber, and the radiation shielding structure (100) is installed in the installation cavity and is used to shield neutron radiation.

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