Analysis and detection equipment and spent fuel reprocessing system

Abstract

The present disclosure relates to an analysis and detection device and a spent fuel post-processing system. The analysis and detection device comprises: a base; a shielding body, which is fixed to the base and comprises a main body and a closing part, wherein the closing part is used to close an opening of the main body and can be opened and closed; an accelerator assembly and a radiation source, wherein the accelerator assembly is located at one side of the shielding body along a first direction and is movably mounted on the base along the first direction, and the radiation source is fixed to one side of the accelerator assembly along the first direction and is located in the shielding body; a measuring assembly, which is fixed in the shielding body and is located at a side of the radiation source away from the accelerator assembly along the first direction, and is used to accommodate an object to be detected to realize a detection mode; a calibration assembly, which is detachably mounted in the shielding body through an opening and is located at a side of the radiation source away from the accelerator assembly along the first direction, and is used to accommodate a calibration object to realize a calibration mode; and a detector assembly, which is arranged at one side of the shielding body along a second direction and is movably mounted on the base along the first direction.

Description

Technical Field

[0001] The present disclosure relates to the technical field of radioactive material analysis and detection, and in particular to an analysis and detection device and a spent fuel post-processing system. Background Art

[0002] In the application of traditional radioactive material analysis and detection, the calibration mode and the working mode (i.e., detection mode) are strictly distinguished. The calibration mode is when the object to be tested is used as the object to be tested after experimental analysis or precision detection in the non-working state. It is used to test the test system and test method and input the object to be tested as an important parameter into the test system. The working mode is to input the object to be tested of unknown composition into the system measurement position for testing. Therefore, the entire test system has a scenario of switching between the calibration mode and the working mode. At this time, the system needs to be shut down and the object to be tested and the calibration object need to be manually switched. The downtime is long and a series of complex manual operations are required.

[0003] For some industries that produce large quantities of industrial products, the test system is only the front-end part but is the key link in the production of the entire system. Long downtime will affect the production of the entire system. In addition, in systems that involve testing toxic and radioactive objects, switching between the two scenes will also cause radiation damage to analysts and operators. Summary of the invention

[0004] The embodiments of the present disclosure provide an analysis and detection device and a spent fuel post-processing system, which can improve the detection and maintenance efficiency of the analysis device.

[0005] The first aspect of the present disclosure provides an analysis and detection device, comprising:

[0006] Pedestal;

[0007] A shielding body is fixed to the base, the shielding body is used for radiation protection and comprises a main body and a closing part, the main body is provided with an opening, and the closing part is used to close the opening and can be opened and closed;

[0008] An accelerator assembly and a radiation source, wherein the accelerator assembly is located at one side of the shielding body along a first direction and is movably mounted on a base along the first direction, and the radiation source is fixed to one side of the accelerator assembly along the first direction and is located inside the shielding body, and is used to receive radiation emitted by the accelerator assembly to generate particles;

[0009] A measuring assembly is fixed in the shielding body and is located on a side of the radiation source away from the accelerator assembly along a first direction, and is used to accommodate the object to be detected to realize a detection mode;

[0010] A calibration assembly is detachably mounted in the shielding body through the opening and is located on a side of the radiation source away from the accelerator assembly along the first direction, and is used to accommodate a calibration object to implement a calibration mode; and

[0011] The detector assembly is arranged on one side of the shielding body along a second direction perpendicular to the first direction, and is movably mounted on the base along the first direction, for receiving particles after interacting with the object to be tested or the calibration object to analyze the type and content of the object to be tested or the calibration object.

[0012] In some embodiments, when the calibration component needs to be disassembled, the sealing portion is in an open state; in the calibration mode or the detection mode, the sealing portion is in a closed state.

[0013] In some embodiments, the opening is located on the top or side of the body portion.

[0014] In some embodiments,

[0015] In the calibration mode, the calibration component is located between the measurement component and the radiation source along a first direction;

[0016] In detection mode, the calibration components are removed.

[0017] In some embodiments, in the calibration mode, the radiation source has a first distance from the calibration component along the first direction; in the detection mode, the radiation source has a second distance from the measurement component along the first direction, and the first distance is equal to the second distance.

[0018] In some embodiments,

[0019] In the calibration mode, the detector assembly is aligned with the calibration assembly in a first direction; or

[0020] In the detection mode, the detector assembly is aligned with the measurement assembly in a first direction.

[0021] In some embodiments, the analysis and detection device further includes a linear motion platform mounted on the base and configured to drive the detector assembly to move along a first direction.

[0022] In some embodiments, the analysis and detection device further comprises a second bracket, the second bracket is arranged on the base, a slide is arranged on the second bracket, and the accelerator assembly is movably mounted on the slide along the first direction.

[0023] In some embodiments, the measuring component includes a measuring slot for accommodating the object to be tested, the calibration component includes a calibration slot for accommodating the calibration object, and the inner bottom surface of the shielding body is provided with two positioning grooves, which are respectively used to position the measuring slot and the calibration slot, and at least the calibration slot is removable relative to the positioning groove.

[0024] In some embodiments, a drift tube extending along a first direction is provided on the side of the accelerator assembly to define a path of rays. The drift tube extends into the shielding body and a radiation source is fixed at an end thereof.

[0025] In some embodiments, the analysis and detection device further comprises:

[0026] A first driving component, used for driving the accelerator assembly to move along a first direction; and / or

[0027] A second driving component is used to drive the detector assembly to move along the first direction; and / or

[0028] The third driving component is used to drive the accelerator assembly and the detector assembly to move along the first direction.

[0029] A second aspect of the present disclosure provides a spent fuel reprocessing system, comprising the analysis and detection device of the above embodiment.

[0030] Based on the above technical solution, the shielding body is fixed in position, and the calibration assembly is disassembled and assembled by opening and closing the closing part. The structure is simple and easy to set up. In the calibration mode or detection mode, the position of the accelerator assembly, the radiation source and the detector assembly can be conveniently adjusted to meet the needs of the mode, thereby enabling the analysis and detection device to flexibly switch between the calibration mode and the detection mode, facilitating detection and maintenance, and reducing the impact of the long-term shutdown of the analysis and detection device for calibration on the efficiency of the entire production system. Moreover, all components do not involve movement along the second direction, which can reduce the size of the analysis and detection device along the second direction. The height in the third direction can also be reduced without setting a dual-degree-of-freedom platform. The overall structure is simple and compact, occupies a small space, and has a low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of the present application. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation on the present disclosure. In the drawings:

[0032] Figure 1 It is a front view of some embodiments of the analysis and detection device disclosed in the present invention.

[0033] Figure 2 1 is a side view of some embodiments of the analytical detection device of the present disclosure in the detection mode.

[0034] Figure 3 1 is a top view of some embodiments of the analysis and detection device disclosed herein.

[0035] Figure 4 A schematic diagram of aligning the detector assembly with the calibration assembly in the calibration mode.

[0036] Figure 5 This is a side view in calibration mode.

[0037] Figure 6 Schematic diagram for removing the calibration components.

[0038] Figure 7 A schematic diagram of aligning the detector assembly with the measurement assembly in the detection mode.

[0039] Figure 8 Schematic diagram of bringing the radiation source close to the measurement component in detection mode.

[0040] Description of Reference Numerals

[0041] 1. Base; 2. Linear motion platform; 21. Screw; 22. Slider; 23. Force-applying member; 24. First bracket; 3. Accelerator assembly; 30. Drift tube; 4. Radiation source; 5. Measurement assembly; 6. Calibration assembly; 7. Shielding body; 71. Main body; 711. Opening; 712. Positioning groove; 72. Closing part; 8. Detector assembly; 81. Shell; 82. Detector; 9. Second bracket; x, first direction; y, second direction; z, third direction. DETAILED DESCRIPTION

[0042] The present disclosure is described in detail below. In the following paragraphs, different aspects of the embodiments are defined in more detail. Each aspect so defined can be combined with any other aspect or aspects, unless explicitly stated not to be combined. In particular, any feature that is considered to be preferred or advantageous can be combined with one or more other features that are considered to be preferred or advantageous.

[0043] The terms "first", "second", etc. that appear in the present disclosure are only for the convenience of description to distinguish different components with the same name, and do not indicate a sequence or a primary and secondary relationship.

[0044] In the description of the present disclosure, the directions or positional relationships indicated by “upper”, “lower”, “top”, “bottom”, “front”, “back”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present disclosure. They do not indicate or imply that the device referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the scope of protection of the present disclosure.

[0045] The present disclosure provides an analytical detection device having a calibration mode and a detection mode. In some embodiments, Figures 1 to 8 As shown, the analytical measuring device of the present disclosure comprises:

[0046] Base 1;

[0047] The shielding body 7 is fixed to the base 1. The shielding body 7 is used for radiation protection and includes a main body 71 and a closing part 72. The main body 71 is provided with an opening 711. The closing part 72 is used to close the opening 711 and can be opened and closed.

[0048] An accelerator assembly 3 and a radiation source 4, wherein the accelerator assembly 3 is located at one side of the shielding body 7 along a first direction x and is movably mounted on the base 1 along the first direction x, and the radiation source 4 is fixed to one side of the accelerator assembly 3 along the first direction x and is located inside the shielding body 7, and is used to receive radiation emitted by the accelerator assembly 3 to generate particles;

[0049] The measuring component 5 is fixed in the shielding body 7 and is located on a side of the radiation source 4 away from the accelerator component 3 along the first direction x, and is used to accommodate the object to be tested to realize the detection mode;

[0050] a calibration assembly 6, which is detachably mounted in the shielding body 7 through the opening 711 and is located on a side of the radiation source 4 away from the accelerator assembly 3 along the first direction x, and is used to accommodate a calibration object to implement a calibration mode; and

[0051] The detector assembly 8 is arranged on one side of the shielding body 7 along the second direction y perpendicular to the first direction x, and is movably installed on the base 1 along the first direction x, for receiving particles after interacting with the object to be tested or the calibration object to analyze the type and content of the object to be tested or the calibration object.

[0052] Specifically, the base 1 may be a flat plate structure, for example, made of steel or other materials, wherein the first direction x and the second direction y are both located in a horizontal plane and are perpendicular to each other, and the third direction z is perpendicular to the first direction x and the second direction y, that is, perpendicular to the horizontal plane.

[0053] In both the calibration mode and the working mode, the shielding body 7 is required to fully surround the area where the measuring component 5, the calibration component 6, and the radiation source 4 are located. For example, the shielding body 7 may be a rectangular door-shaped structure, or the top may be an arched door-shaped structure, etc. For example, the main body 71 of the shielding body 7 may be a hollow rectangular parallelepiped structure with one or both ends penetrated. For example, the shielding body 7 has a hollow cavity inside for accommodating the measuring component 5 and the calibration component 6. The position of the shielding body 7 in the calibration mode and the detection mode remains unchanged, and the calibration component 6 and the object to be inspected are taken in and out by opening and closing the closing part 72. The closing part 72 may be a flat plate or an arched door-shaped structure.

[0054] like Figure 1 and Figure 2 As shown, the accelerator assembly 3 is used to emit radiation, and a drift tube 30 is provided on one side thereof along the first direction x. The drift tube 30 extends along the first direction x and is used to guide the radiation beam. The radiation source 4 is located at one end of the drift tube 30 away from the accelerator assembly 3 and is used to receive the radiation emitted by the accelerator assembly 3 to generate particles. The accelerator assembly 3 is movably mounted on the base 1 along the first direction x so as to adjust the distance between the radiation source 4 and the measurement assembly 5 or the calibration assembly 6 along the first direction x. The accelerator assembly 3 can be mounted on the base 1 directly or indirectly.

[0055] The measuring assembly 5 may include a measuring tank for accommodating the object to be inspected, and the calibration assembly 6 may include a calibration tank for accommodating the calibration object. The object to be inspected and the calibration object may be liquids. The measuring assembly 5 and the calibration assembly 6 are both located on a side of the radiation source 4 away from the accelerator assembly 3 along the first direction x. The measuring assembly 5 and the calibration assembly 6 may be arranged side by side along the first direction x, and their sizes may be the same.

[0056] In one installation, such as Figure 6 As shown, the inner bottom surface of the shielding body 7 is provided with two positioning grooves 712, and the two positioning grooves 712 can be arranged side by side along the first direction x, and are used to position the measuring groove and the calibration groove respectively. This method has a simple structure and is easy to disassemble and assemble. In order to make the measuring groove or the calibration groove adapt to the height of the radiation source 4 and the detector assembly 8, the bottom surface of the shielding body 7 can be spaced apart from the base 1 by a preset distance. Or if the shielding body 7 is in contact with the upper surface of the base 1, the shielding body 7 may not be provided with a bottom surface, and two positioning grooves 712 may be directly provided on the upper surface of the base 1. In this case, the shielding body 7 may also be a cylinder with an opening 711 at one end but no closing portion 72, and the opening 711 is covered on the two positioning grooves 712 provided on the upper surface of the base 1 to achieve a protective effect.

[0057] In another installation method, a mounting seat is provided in the area within the shielding body 7, and the measuring component 5 and the calibration component 6 can be arranged on the mounting seat so that they can be reliably maintained in position and the measuring component 5 and the calibration component 6 are at a suitable height for easy installation.

[0058] The calibration tank and the measuring tank can be rectangular parallelepiped tanks, whose length direction is consistent with the second direction y, and can be made of metal material. In the calibration mode, the radiation source 4 is located on one side of the calibration tank along the first direction x, and the particles generated by the radiation source 4 can enter the calibration object such as liquid through the metal side wall of the calibration tank, and then be received by the detector assembly 8 to analyze the type and content of the calibration object. Usually, in the calibration mode, the measuring tank does not contain the object to be detected. Or if there is an object to be detected in the measuring tank, in order to prevent the object to be detected from being affected, a shielding layer can be set on the outer side of the calibration tank away from the radiation source 4 along the first direction x. In the detection mode, the radiation source 4 is located on one side of the measuring tank along the first direction x, and the particles generated by the radiation source 4 can enter the object to be detected such as liquid through the metal side wall of the measuring tank.

[0059] The detector assembly 8 is arranged on one side of the shielding body 7 along the second direction y and is movably mounted on the base 1 along the first direction x for adjusting the position of the detector assembly 8 along the first direction x so as to align with the measuring assembly 5 or the calibration assembly 6 .

[0060] Taking the detection mode (i.e., the working mode) as an example, the rays emitted by the accelerator component 3 enter the radiation source 4 through the drift tube 30. The radiation source 4 will generate particles such as neutrons, which will enter the object to be tested in the measurement component 5. Finally, the neutrons and other particles that have interacted with the object to be tested or the calibration object will be received by the detector component 8 to analyze the type and content of the object to be tested based on the number of particles.

[0061] In this embodiment, the shielding body 7 is fixed in position, and the calibration component 6 can be disassembled and assembled by opening and closing the closing part 72. The structure is simple and easy to set up. In the calibration mode or detection mode, the accelerator component 3, the radiation source 4 and the detector component 8 can be conveniently adjusted to the position corresponding to the measurement component 5 or the calibration component 6 to meet the needs of this mode, thereby enabling the analysis and detection device to be flexibly switched between the calibration mode and the detection mode, facilitating detection and maintenance, and reducing the impact of the long-term shutdown and calibration of the analysis and detection device on the efficiency of the entire production system. In addition, all components do not involve movement along the second direction y, which can reduce the size of the analysis and detection device along the second direction y, and can also reduce the height in the third direction z without setting a dual-degree-of-freedom platform. The overall structure is simple and compact, occupies a small space, and has a low cost.

[0062] Furthermore, if the object to be tested is toxic or radioactive, it can be protected by the shielding body 7 in both the calibration mode and the detection mode to ensure that the operator is not harmed.

[0063] In some embodiments, the movement of the accelerator assembly 3 and the detector assembly 8 are independent of each other, and the positions can be adjusted respectively to achieve the best working position of the radiation source 4 and the detector assembly 8, so as to obtain a better detection effect. In some embodiments, the accelerator assembly 3 and the detector assembly 8 can be moved synchronously at the same time to adjust the accelerator assembly 3, the radiation source 4 and the detector assembly 8 from the position corresponding to the calibration assembly 6 to the position corresponding to the measurement assembly 5. When the mode is switched, the displacement of the accelerator assembly 3 and the detector assembly 8 along the first direction x is consistent.

[0064] In some embodiments, when the calibration component 6 needs to be disassembled, the closing portion 72 is in an open state; in the calibration mode or the detection mode, the closing portion 72 is in a closed state.

[0065] like Figure 4 As shown, when the calibration component 6 needs to be installed, the closing part 72 is opened. The closing part 72 can adopt a door structure and rotate around the hinge axis with the main body 71; or the closing part 72 adopts a push-pull structure, and the opening 711 is exposed when it is pushed out; or the closing part 72 is directly separated from the main body 71. At this time, the calibration component 6 can be installed, and the closing part 72 closes the opening 711 for protection, so as to perform calibration. Figure 5As shown, after the calibration mode is completed, the sealing portion 72 is opened and the calibration component 6 can be removed. In the calibration state or detection mode, the sealing portion 72 seals the opening 711 and completely surrounds the radiation source 4, the measuring component 5 and the calibration component 6 to protect the radiation.

[0066] This embodiment can conveniently disassemble and assemble the calibration component 6 by opening and closing the sealing portion 72 to switch between the detection mode and the calibration mode. Moreover, when operating in these two modes, the shielding body 7 can play a protective role to prevent the radiation substance from leaking out.

[0067] In some embodiments, Figure 2 and Figure 3 As shown, the opening 711 is located at the top of the main body 71. For example, the entire top of the main body 71 can be set as the opening 711, and the closing portion 72 is a plate-shaped structure to cover the opening 711.

[0068] In this embodiment, the sealing portion 72 is disposed on the top of the shielding body 7, avoiding the positions of the radiation source 4 and the detector assembly 8. When the calibration assembly 6 is placed, it will not be affected by the measuring assembly 5. When the calibration assembly 6 containing liquid is placed, it is not easy to spill. It also has an optimal operating angle when disassembling the calibration assembly 6.

[0069] In some embodiments, the opening 711 is located at a side of the main body 71 , for example, may be disposed at a side of the shielding body 7 away from the detector assembly 8 .

[0070] In some embodiments, Figure 4 As shown, in the calibration mode, the calibration component 6 is located between the measuring component 5 and the radiation source 4 along the first direction x; Figure 6 As shown, in the detection mode, the calibration component 6 is removed.

[0071] In this embodiment, the installation position of the calibration component 6 is set between the measuring component 5 and the radiation source 4 along the first direction x, so that in the calibration mode, the radiation source 4 is closer to the calibration component 6, and the measuring component 5 is located on the side away from the radiation source 4; in the detection mode, after the calibration component 6 is removed, the radiation source 4 is brought close to the measuring component 5 along the first direction x, and the object to be detected can be detected. Therefore, the analysis and detection device can flexibly and conveniently switch between the calibration mode and the detection mode.

[0072] In some embodiments, in the calibration mode, the radiation source 4 has a first distance from the calibration component 6 along the first direction x; in the detection mode, the radiation source 4 has a second distance from the measurement component 5 along the first direction x, and the first distance is equal to the second distance.

[0073] like Figure 4 As shown, when it is necessary to enter the calibration mode, the radiation source 4 is close to the calibration component 6. Figure 6 As shown, after the calibration is completed, the calibration component 6 is removed, and at this time, the radiation source 4 is far away from the measurement component 5 along the second direction y. The detector 82 and the measurement component 5 are also in a staggered state along the first direction x. Figure 7 As shown, when it is necessary to enter the detection mode, the detector assembly 8 moves along the first direction x to align with the measurement assembly 5. Figure 8 As shown, the accelerator assembly 3 is moved along the first direction x toward the direction close to the measuring assembly 5 until the distance between the radiation source 4 and the measuring assembly 5 in the first direction x is consistent with the distance between the radiation source 4 and the calibration assembly 6 in the calibration mode.

[0074] This embodiment can make the distances of the radiation source 4 along the first direction x relative to the object to be detected or the calibration object consistent in the detection mode and the calibration mode, thereby ensuring the same test conditions in the two modes and improving the detection accuracy of the object to be detected.

[0075] In some embodiments, in the calibration mode, the detector assembly 8 is aligned with the calibration assembly 6 in the first direction x; or in the detection mode, the detector assembly 8 is aligned with the measurement assembly 5 in the first direction x.

[0076] Specifically, from Figure 3 It can be seen that the detector assembly 8 includes a housing 81 and a detector 82. The detector 82 is arranged in the housing 81, and the housing 81 is made of shielding material. Figure 3 In the top view, the rectangular frame on the top of the detector assembly 8 is only for seeing the internal detector 82 structure clearly.

[0077] In the calibration mode, the detector 82 is aligned with the calibration component 6 in the first direction x, that is, the detector 82 and the calibration component 6 are located on the same straight line, and the straight line extends along the second direction y; in the detection mode, the detector 82 is aligned with the measurement component 5 in the first direction x, that is, the detector 82 and the measurement component 5 are located on the same straight line, and the straight line extends along the second direction y.

[0078] This embodiment can match the positions of the radiation source 4 and the detector assembly 8 with the measurement assembly 5 or the calibration assembly 6 by moving at least one of the accelerator assembly 3 and the detector assembly 8 along the first direction x, so as to flexibly meet the position requirements of the main components in the calibration mode and the detection mode.

[0079] In some embodiments, Figure 2 As shown, the analysis and detection device further includes a linear motion platform 2 mounted on the base 1 and used to drive the detector assembly 8 to move along the first direction x.

[0080] This embodiment can place the detector assembly 8 at a suitable height by providing the linear motion platform 2, and guide the detector assembly 8 to move smoothly along the first direction x, thereby accurately adjusting the position of the detector assembly 8 in different working modes.

[0081] In some embodiments, Figure 2 As shown, the linear motion platform 2 includes:

[0082] A first bracket 24 is provided on the base 1;

[0083] A lead screw 21 is mounted on the first bracket 24 and is rotatable around its own axis, and the lead screw 21 extends along a first direction x; and

[0084] The slider 22 cooperates with the lead screw 21 to form a lead screw nut mechanism, and the slider 22 is movable along the first direction x;

[0085] The detector assembly 8 is connected above the slider 22 .

[0086] Specifically, a support frame may be provided above the slider 22 to install a larger detector assembly 8, and a force member 23, such as a hand wheel, is provided at one end of the lead screw 21 away from the accelerator assembly 3 along the first direction x, for receiving an external force to drive the lead screw 21 to rotate, so as to drive the slider 22 to move along the lead screw 21, thereby moving the detector assembly 8 along the first direction x. Optionally, the lead screw 21 may also be driven automatically.

[0087] This embodiment is provided with a lead screw nut mechanism, which can realize the smooth movement of the detector assembly 8 along the first direction x and facilitate continuous fine-tuning, and can more accurately align the detector 82 in the detector assembly 8 with the measuring assembly 5 or the calibration assembly 6, thereby improving the detection accuracy.

[0088] In some embodiments, Figure 2 As shown, the analysis and detection device further comprises a second bracket 9, which is arranged on the base 1, and a slide is arranged on the second bracket 9, and the accelerator assembly 3 is movably mounted on the slide along the first direction x. For example, the position of the accelerator assembly 3 can be adjusted manually or automatically.

[0089] In this embodiment, the second bracket 9 is provided to support the accelerator assembly 3, so that the accelerator assembly 3 is at a suitable height, and under the guidance of the slideway, the accelerator assembly 3 can be smoothly moved along the first direction x, and the position of the accelerator assembly 3 in different working modes can be accurately adjusted. Moreover, when the accelerator assembly 3 needs to be maintained, the accelerator assembly 3 can be pushed outward along the first direction x relative to the second bracket 9, so as to inspect and repair the accelerator assembly 3.

[0090] In some embodiments, the second bracket 9 is disposed on the linear motion platform 2. The linear motion platform 2 drives the second bracket 9 and then the accelerator assembly 3 and the detector assembly 8 to move synchronously along the first direction x.

[0091] In some embodiments, Figure 3 and Figure 6 As shown, the measuring component 5 includes a measuring slot for accommodating the object to be inspected, the calibration component 6 includes a calibration slot for accommodating the calibration object, and the inner bottom surface of the shielding body 7 is provided with two positioning grooves 712, which are used to position the measuring slot and the calibration slot respectively, and at least the calibration slot is detachable relative to the positioning groove 712.

[0092] The two positioning grooves 712 are arranged side by side along the first direction x, and only the bottom area of ​​the measuring groove and the calibration groove is arranged in the positioning groove 712 to achieve positioning, and the upper and middle areas are exposed outside the positioning groove 712. The calibration groove is detachable, and when it is necessary to switch to the detection mode, such as Figure 6 As shown, the calibration tank needs to be removed, or the calibration tank containing different calibration objects can be conveniently replaced, and different calibration objects can be solutions of different concentrations. Further, the measuring tank is also configured to be detachable, or the measuring tank can also be fixed in the positioning groove 712 and cannot be detached. The measuring tank, the calibration tank and the positioning groove 712 can be matched with clearance, which is convenient for disassembly and can also ensure the positioning effect.

[0093] This embodiment can conveniently install or remove the calibration slot, further improve the efficiency of switching between the calibration mode and the detection mode, or conveniently replace different calibration slots, which can improve the calibration efficiency. Moreover, this method of installing the measurement slot and the calibration slot is simple in structure and does not require the use of additional installation components.

[0094] Optionally, a mounting seat is provided in the area inside the shielding body 7, and the measuring component 5 and the calibration component 6 can be provided on the mounting seat so as to reliably maintain the position and make the measuring component 5 and the calibration component 6 at a suitable height. For example, the calibration component 6 can also include a third bracket, the third bracket can be detachably installed, and the calibration slot can be pluggably installed on the third bracket; the mounting seat includes a vertical plate, and a hook or a support member is provided on the vertical plate, which is used to hang the third bracket on or place it on the vertical plate, so as to facilitate the overall disassembly of the calibration component 6. The calibration slot can be pluggably installed on the third bracket to facilitate the replacement of the calibration slot accommodating different calibration objects, which can improve the calibration efficiency.

[0095] In some embodiments, a drift tube 30 extending along the first direction x is provided on the side of the accelerator assembly 3 to define the path of the ray, and the drift tube 30 extends into the shielding body 7 and the end thereof is fixed with the radiation source 4. This structure facilitates ensuring the positional relationship between the radiation source 4 and the drift tube 30, so that the ray in the drift tube 30 reliably enters the radiation source 4 to generate particles, thereby improving the working reliability of the analysis and detection device.

[0096] In some embodiments, the analysis and detection device further comprises:

[0097] A first driving component, used for driving the accelerator assembly 3 to move along a first direction x; and / or

[0098] A second driving component is used to drive the detector assembly 8 to move along the first direction x; and / or,

[0099] The third driving component is used to drive the accelerator assembly 3 and the detector assembly 8 to move along the first direction x.

[0100] Among them, the first driving component, the second driving component and the third driving component are all linear driving components, such as electric push rods, cylinders or hydraulic cylinders, or driving components that convert rotational motion into linear motion.

[0101] This embodiment drives the accelerator assembly 3 and the detector assembly 8 to move along the first direction x respectively through the first driving component and the second driving component, or drives the accelerator assembly 3 and the detector assembly 8 to move along the first direction x simultaneously through the third driving component, which can improve the degree of automation of switching between the calibration mode and the detection mode of the analysis and detection device, improve efficiency and control accuracy, and reduce manual participation.

[0102] The specific working principle of the analysis and detection device disclosed in the present invention is described below.

[0103] like Figure 4 As shown, when the analysis and detection device needs to enter the calibration mode, the sealing portion 72 is opened, the calibration component 6 is installed, and the detector 82 is aligned with the calibration component 6 in the first direction x. Figure 5 This is a side view of the calibration mode, where the detector assembly 8 is overall closer to the accelerator assembly 3 in the first direction x. Then, the sealing portion 72 is closed, and the calibration mode operation can be performed.

[0104] like Figure 6 As shown, after the calibration is completed, the sealing portion 72 is opened and the calibration component 6 is removed.

[0105] like Figure 7 As shown, when the analysis and detection device needs to enter the detection mode, the detector assembly 8 moves along the first direction x toward the side away from the accelerator assembly 3, so that the detector 82 is aligned with the measurement assembly 5 in the first direction x. Figure 8 As shown, the accelerator assembly 3 is moved along the first direction x toward the side close to the measuring assembly 5, so that the distance between the radiation source 4 and the measuring assembly 5 along the first direction x is equal to the distance between the radiation source 4 and the calibration assembly 6 along the first direction x in the calibration mode. Then, the sealing portion 72 is closed, and the detection mode can be operated. Figure 2This is the side view of the detection mode.

[0106] Secondly, the present disclosure provides a spent fuel reprocessing system, including the analysis and detection device of the above embodiment. Spent fuel refers to the nuclear fuel discharged from the reactor after "burning" to a certain extent in the reactor. The spent fuel reprocessing system refers to the processing of spent fuel used by the reactor, separating useful elements (such as uranium and plutonium) from fission products and other substances, and using them for the manufacture of new nuclear fuel elements, realizing partial recycling of nuclear fuel, or extracting plutonium from it for nuclear weapon manufacturing.

[0107] The analysis and detection device disclosed in the present invention can be used to detect specific components in spent fuel. Since such an analysis and detection device can be flexibly switched between calibration mode and detection mode, it is convenient for detection and maintenance, and thus the impact of long-term shutdown and calibration of the analysis and detection device on the overall working efficiency of the spent fuel reprocessing system can be reduced. Moreover, since the object to be detected is toxic or radioactive, it can be protected by the shielding body 7 in both calibration mode and detection mode to ensure that the operator is protected from harm.

[0108] The embodiments provided by the present disclosure are described in detail above. Specific embodiments are used herein to illustrate the principles and implementation methods of the present disclosure, and the description of the above embodiments is only used to help understand the methods and core ideas of the present disclosure. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present disclosure, several improvements and modifications can be made to the present disclosure, and these improvements and modifications also fall within the scope of protection of the claims of the present disclosure.

Claims

1. An analysis and detection device, characterized in that: include: Base (1); A shielding body (7) fixed to the base (1), the shielding body (7) being used for radiation protection and comprising a main body (71) and a closing part (72), the main body (71) being provided with an opening (711), and the closing part (72) being used for closing the opening (711) and being openable and closable; An accelerator assembly (3) and a radiation source (4), wherein the accelerator assembly (3) is located on one side of the shielding body (7) along a first direction (x) and is movably mounted on the base (1) along the first direction (x); and the radiation source (4) is fixed to one side of the accelerator assembly (3) along the first direction (x) and is located inside the shielding body (7) and is used to receive radiation emitted by the accelerator assembly (3) to generate particles; A measuring component (5) is fixed in the shielding body (7) and is located on a side of the radiation source (4) away from the accelerator component (3) along the first direction (x), and is used to accommodate the object to be detected to realize a detection mode; a calibration component (6) detachably mounted in the shielding body (7) through the opening (711), and located on a side of the radiation source (4) away from the accelerator component (3) along the first direction (x), and used for accommodating a calibration object to implement a calibration mode; and A detector assembly (8) is arranged on one side of the shielding body (7) along a second direction (y) perpendicular to the first direction (x), and is movably mounted on the base (1) along the first direction (x), and is used to receive particles after interacting with the object to be detected or the calibration object, so as to analyze the type and content of the object to be detected or the calibration object; Wherein, in the calibration mode, the calibration component (6) is located between the measurement component (5) and the radiation source (4) along the first direction (x); in the detection mode, the calibration component (6) is removed.

2. The analysis and detection device according to claim 1, characterized in that: When the calibration component (6) needs to be disassembled, the closed portion (72) is in an open state; in the calibration mode or the detection mode, the closed portion (72) is in a closed state.

3. The analysis and detection device according to claim 1, characterized in that: The opening (711) is located at the top or side of the main body (71).

4. The analysis and detection device according to claim 1, characterized in that: In the calibration mode, the radiation source (4) has a first distance from the calibration component (6) along the first direction (x); in the detection mode, the radiation source (4) has a second distance from the measurement component (5) along the first direction (x), and the first distance is equal to the second distance.

5. The analysis and detection device according to claim 1, characterized in that: In the calibration mode, the detector assembly (8) is aligned with the calibration assembly (6) in the first direction (x); or In the detection mode, the detector assembly (8) is aligned with the measurement assembly (5) in the first direction (x).

6. The analysis and detection device according to any one of claims 1 to 5, characterized in that: It also includes a linear motion platform (2) mounted on the base (1) and used to drive the detector assembly (8) to move along a first direction (x).

7. The analysis and detection device according to any one of claims 1 to 5, characterized in that: It also comprises a second bracket (9), the second bracket (9) being arranged on the base (1), the second bracket (9) being provided with a slideway, and the accelerator assembly (3) being movably mounted on the slideway along the first direction (x).

8. The analysis and detection device according to any one of claims 1 to 5, characterized in that: The measuring component (5) comprises a measuring slot for accommodating a test object, the calibration component (6) comprises a calibration slot for accommodating a calibration object, and the inner bottom surface of the shielding body (7) is provided with two positioning grooves (712), the two positioning grooves (712) being used to position the measuring slot and the calibration slot respectively, and at least the calibration slot is detachable relative to the positioning grooves (712).

9. The analysis and detection device according to any one of claims 1 to 5, characterized in that: A drift tube (30) extending along the first direction (x) is provided on the side of the accelerator assembly (3) for defining the path of the ray; the drift tube (30) extends into the shielding body (7) and the radiation source (4) is fixed at its end.

10. The analysis and detection device according to any one of claims 1 to 5, characterized in that: Also includes: A first driving component, used for driving the accelerator assembly (3) to move along the first direction (x); and / or a second driving component, used for driving the detector assembly (8) to move along the first direction (x); and / or A third driving component is used to drive the accelerator assembly (3) and the detector assembly (8) to move along the first direction (x).

11. A spent fuel reprocessing system, characterized in that: An analysis and detection device comprising any one of claims 1 to 10.

Images