Analysis and detection apparatus and spent fuel reprocessing system

Abstract

The present disclosure relates to an analysis and detection apparatus and a spent fuel reprocessing system. The analysis and detection apparatus comprises: a base; a carrying platform movably arranged on the base in a first direction and a second direction perpendicular to each other in a horizontal plane; an accelerator assembly and a radiation source, wherein the radiation source is located on one side of the accelerator assembly in the second direction, and the radiation source is used for receiving radiations emitted by the accelerator assembly to generate particles; a measuring assembly fixedly mounted relative to the base and used for accommodating an object under detection to implement a detection mode; a calibration assembly detachably arranged and used for accommodating a calibration object to implement a calibration mode; a shielding body used for providing radiation protection for the radiation source, the measuring assembly, and the calibration assembly; and a detector assembly arranged on one side of the shielding body in the first direction; wherein the accelerator assembly, the shielding body, and the detector assembly are all arranged on the carrying platform, and the carrying platform is configured to drive the shielding body to reach or leave a protection position in the first direction.

Description

Analytical detection equipment and spent fuel reprocessing system

[0001] Cross-references to related applications

[0002] This disclosure is based on the Chinese application with application number 202311861529.8 and application date December 29, 2023, and claims its priority. The disclosed content of the Chinese application is hereby introduced into this disclosure as a whole. Technical Field

[0003] 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

[0004] Traditional applications of radioactive material analysis and testing strictly distinguish between calibration mode and operating mode (i.e., testing mode). Calibration mode involves using a calibration object with known physical and chemical composition obtained through laboratory testing or precision testing as the test object during non-operating conditions. This object is used to verify the test system and test methods and serves as a key parameter input into the test system. Operating mode involves inputting a test object with unknown composition into the system's measurement points for testing. Therefore, the entire test system often switches between calibration and operating modes, requiring system downtime and manual switching between the test object and calibration object. This can be lengthy and requires a series of complex manual operations.

[0005] For certain industries producing large quantities of industrial products, the test system is only the front-end component, yet it is a critical link in the entire production process. Prolonged downtime can impact the entire production process. Furthermore, in systems that test toxic or radioactive objects, switching between two scenarios can also expose analysts and operators to radiation hazards. Summary of the Invention

[0006] The embodiments of the present disclosure provide an analysis and detection device and a spent fuel reprocessing system, which can improve the detection and maintenance efficiency of the analysis device.

[0007] A first aspect of the present disclosure provides an analysis and detection device, comprising:

[0008] base;

[0009] The carrying platform is movably arranged on the base along a first direction and a second direction perpendicular to each other in a horizontal plane;

[0010] an accelerator assembly and a radiation source, wherein the radiation source is located on one side of the accelerator assembly along the second direction, the radiation source and the accelerator assembly are fixed relative to each other, and is used to receive radiation emitted by the accelerator assembly to generate particles;

[0011] A measuring assembly is fixedly mounted relative to the base and is used to accommodate the object to be inspected to implement a detection mode;

[0012] a calibration component, detachably provided, for accommodating a calibration object to implement a calibration mode;

[0013] Shielding for radiation protection of radiation sources, measurement components, and calibration components; and

[0014] A detector assembly is provided on one side of the shielding body along the first direction, and is used to receive particles after interacting with the object to be detected or the calibration object to analyze the type and content of the object to be detected or the calibration object;

[0015] The accelerator assembly, the shielding body and the detector assembly are all arranged on a carrying platform, and the carrying platform is configured to drive the shielding body along a first direction to reach or leave a protection position.

[0016] In some embodiments, the supporting platform is configured to move the shielding body away from the protective position by moving along the first direction when the calibration component needs to be disassembled and assembled; and to move the shielding body to the protective position by moving in the opposite direction along the first direction when the calibration mode or detection mode needs to be entered.

[0017] In some embodiments, the carrier platform is configured to match the position of the radiation source and detector assembly with the measurement assembly or the calibration assembly by moving along the second direction.

[0018] In some embodiments, in the calibration mode, the calibration component is fixed relative to the base and installed between the measurement component and the radiation source along the second direction; in the detection mode, the calibration component is removed.

[0019] In some embodiments, in the detection mode, the carrying platform is configured to move the radiation source close to the measurement component by moving along the second direction, so that the distance between the radiation source and the measurement component is equal to the distance in the calibration mode.

[0020] In some embodiments,

[0021] In the calibration mode, the detector assembly is aligned with the calibration assembly in a second direction; or

[0022] In the measurement mode, the detector assembly is aligned with the measurement assembly in a second direction.

[0023] In some embodiments, the calibration assembly includes a first bracket and a calibration slot, the first bracket is used to achieve detachable installation, the calibration slot is pluggable and installed on the first bracket, and the calibration slot is used to accommodate the calibration object.

[0024] In some embodiments, a drift tube extending along the second direction is provided on the side of the accelerator assembly for defining a path of the ray. The drift tube extends into the shielding body and the radiation source is fixed at its end.

[0025] In some embodiments, a drift tube extending along the second direction is provided on the side of the accelerator assembly to define the path of the radiation. The drift tube extends into the shielding body, and the radiation source is fixed to the inner wall of the shielding body and is located at the end of the drift tube.

[0026] In some embodiments, the carrying platform includes a lower platform and an upper platform, and the analysis and detection device further includes:

[0027] a first driving component disposed between the base and the lower platform, for driving the lower platform to move relative to the base in one of a first direction and a second direction; and

[0028] The second driving component is provided between the lower platform and the upper platform, and is used for driving the upper platform to move relative to the lower platform along the other of the first direction and the second direction.

[0029] In some embodiments, the area of ​​the lower platform is smaller than the area of ​​the upper platform.

[0030] In some embodiments, the analysis and detection device further includes two guide rails, which are spaced apart on the base, and the extension direction of the guide rails is consistent with the movement direction of the lower platform.

[0031] In some embodiments, the accelerator assembly includes: a second bracket and an accelerator, the second bracket is fixed to the carrying platform, and the accelerator is movably mounted on the second bracket along the second direction.

[0032] A second aspect of the present disclosure provides a spent fuel reprocessing system, comprising the analysis and detection device of the above embodiment.

[0033] Based on the above technical solution, the carrying platform is designed to move in a dual-degree-of-freedom manner. The carrying platform can be moved in a first direction or a second direction to synchronously move the accelerator assembly, the radiation source, the shielding body, and the detector assembly. The calibration assembly can be disassembled and assembled by moving the shielding body in the first direction. In the calibration mode or the detection mode, the accelerator assembly, the radiation source, and the detector assembly are adjusted to positions corresponding to the measurement assembly or the calibration assembly to meet the requirements of the mode. This allows the analytical detection device to flexibly switch between the calibration mode and the detection mode, facilitating detection and maintenance, reducing the downtime and calibration time of the analytical detection device, and thus reducing the impact on the efficiency of the entire production system. Moreover, if the object to be detected is toxic or radioactive, it can be protected by the shielding body in both the calibration mode and the detection mode to ensure that the operator is protected from harm. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of this 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 of the present disclosure. In the drawings:

[0035] FIG1 is a front view of some embodiments of the analysis and detection device disclosed herein.

[0036] FIG2 is a top view of some embodiments of the analysis and detection device disclosed herein.

[0037] FIG3 is a side view of some embodiments of the analysis and detection device disclosed herein.

[0038] FIG4 is a perspective view of some embodiments of the analysis and detection device disclosed herein.

[0039] FIG5 is a schematic diagram of the top view shown in FIG2 rotated 90°.

[0040] FIG6 is a side view showing the first driving component moving along the first direction to drive the shielding body to move away from the protection position.

[0041] FIG7 is a schematic diagram of installing the calibration component.

[0042] FIG8 is a schematic diagram of removing the calibration component.

[0043] FIG9 is a top view of the second driving component moving along the second direction to drive the radiation source to approach the measuring mechanism.

[0044] FIG10 is a side view of FIG9 .

[0045] FIG11 is a top view of the analysis and detection device in the detection mode.

[0046] FIG. 12 is a side view of the accelerator being moved outwardly in a second direction when the accelerator needs to be maintained. DETAILED DESCRIPTION

[0047] The present disclosure is described in detail below. In the following paragraphs, various aspects of the embodiments are defined in more detail. Each aspect defined in this manner may be combined with any other aspect or aspects unless expressly stated not to be combinable. In particular, any feature considered to be preferred or advantageous may be combined with one or more other features considered to be preferred or advantageous.

[0048] The terms "first" and "second" appearing in this disclosure are only for the convenience of description to distinguish different components with the same name, and do not indicate a priority or primary and secondary relationship.

[0049] 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.

[0050] The present disclosure provides an analytical detection device having a calibration mode and a detection mode. In some embodiments, as shown in FIG1 to FIG12 , the analytical measurement device of the present disclosure includes:

[0051] Base 1;

[0052] The carrying platform 2 is movably provided on the base 1 along a first direction x and a second direction y perpendicular to each other in a horizontal plane;

[0053] An accelerator assembly 3 and a radiation source 4, wherein the radiation source 4 is located on one side of the accelerator assembly 3 along the second direction y, the radiation source 4 is fixed relative to the accelerator assembly 3, and is used to receive radiation emitted by the accelerator assembly 3 to generate particles;

[0054] The measuring assembly 5 is fixedly mounted relative to the base 1 and is used to accommodate the object to be inspected to implement the inspection mode;

[0055] a calibration component 6, detachably provided for accommodating a calibration object to implement a calibration mode;

[0056] Shielding body 7, used for protecting radiation source 4, measurement component 5 and calibration component 6 from radiation; and

[0057] The detector assembly 8 is provided on one side of the shielding body 7 along the first direction x, and is used to receive particles after interacting with the object to be detected or the calibration object to analyze the type and content of the object to be detected or the calibration object;

[0058] The accelerator assembly 3 , the shielding body 7 and the detector assembly 8 are all arranged on the carrying platform 2 , and the carrying platform 2 is configured to drive the shielding body 7 along the first direction x to reach or leave the protection position.

[0059] Specifically, the base 1 can be a flat plate structure, for example, made of steel or other materials. The supporting platform 2 is mounted on the base 1 and has bidirectional freedom of movement in the horizontal plane. The supporting platform 2 can be driven manually or automatically. The first direction x and the second direction y are both located in the horizontal plane and are perpendicular to each other. The third direction z is perpendicular to the first direction x and the second direction y, that is, perpendicular to the horizontal plane.

[0060] As shown in Figures 1 and 2, the accelerator assembly 3 is used to emit radiation. A drift tube 30 is provided on one side of the accelerator assembly along the second direction y. The drift tube 30 extends along the second direction y 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.

[0061] The measurement assembly 5 or calibration assembly 6 is located along the second direction y on a side of the radiation source 4 away from the drift tube 30. For example, the measurement assembly 5 may include a measurement tank for accommodating an object to be detected, and the calibration assembly 6 may include a calibration tank 62 for accommodating a calibration object. The object to be detected and the calibration object may be liquids. Both the measurement assembly 5 and the calibration assembly 6 are located along the second direction y on a side of the radiation source 4 away from the accelerator 3. The measurement assembly 5 and the calibration assembly 6 may be arranged side by side along the second direction y and may have the same size.

[0062] As shown in Figure 7, the vertical plate 12 is fixedly mounted on the base 1 and remains in position. The measurement assembly 5 and calibration assembly 6 are both mounted on the vertical plate 12. The calibration tank 62 and the measurement tank can be rectangular parallelepiped tanks, whose length is aligned with the first direction x, and can be made of metal. In calibration mode, the radiation source 4 is located on one side of the calibration tank 62 along the second direction y. Particles generated by the radiation source 4 can pass through the metal sidewalls of the calibration tank 62 into the liquid or other calibration material, where they are then detected by the detector assembly 8 for analysis of the type and content of the calibration material. Typically, in calibration mode, the measurement tank does not contain a test object. Alternatively, if a test object is present in the measurement tank, a shielding layer can be provided on the outer side of the calibration tank 62 along the second direction y, away from the radiation source 4, to prevent any interference with the test object. In detection mode, the radiation source 4 is located on one side of the measurement tank along the second direction y. Particles generated by the radiation source 4 can pass through the metal sidewalls of the measurement tank into the liquid or other test object.

[0063] The detector assembly 8 is located on the side of the measurement assembly 5 and the calibration assembly 6 away from the installation position along the first direction x, and is used to receive particles such as neutrons after interacting with the object to be tested or the calibration object, so as to analyze the type and content of the object to be tested or the calibration object based on the number of particles.

[0064] In both calibration mode and operating mode, the shielding body 7 is required to fully surround the area where the measurement assembly 5, calibration assembly 6, and radiation source 4 are located. For example, in Figure 2 or other top views, the rectangular frame at the top of the shielding body 7 is not actually an opening but is merely for viewing the internal structure. The rectangular frame at the top of the detector assembly 8 is also merely for viewing the internal detector 83. For example, the detector assembly 8 can include a housing surrounding the detector 83, the housing being made of a shielding material. For example, the shielding body 7 can be a rectangular parallelepiped door-like structure, or have an arched door-like structure at the top, etc., which, together with the vertical plate 12 described below, can form a hollow cavity for accommodating the measurement assembly 5 and calibration assembly 6.

[0065] 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 produce particles such as neutrons, which enter the object to be tested in the measurement component 5. Finally, the detector component 8 receives the 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.

[0066] In this embodiment, the carrying platform 2 is designed to move in a dual-degree-of-freedom manner, and the accelerator assembly 3, the shielding body 7, and the detector assembly 8 are all mounted on the carrying platform 2. The carrying platform 2 can be moved along the first direction x or the second direction y to cause the accelerator assembly 3, the radiation source 4, the shielding body 7, and the detector assembly 8 to move synchronously. The calibration assembly 6 can be disassembled and assembled by moving the shielding body 7 along the first direction x. In the calibration mode or the detection mode, the accelerator assembly 3, the radiation source 4, and the detector assembly 8 can be adjusted to positions corresponding to the measurement assembly 5 or the calibration assembly 6 to meet the requirements of the mode. This allows the analytical detection device to be flexibly switched between the calibration mode and the detection mode, facilitating detection and maintenance, reducing the downtime and calibration time of the analytical detection device, and thus reducing the impact on the efficiency of the entire production system. Moreover, if the object to be detected 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 protected from harm.

[0067] In addition, in the calibration mode and the detection mode, the positional relationship among the accelerator assembly 3, the radiation source 4 and the detector assembly 8 does not change, and the measurement references in the two modes are consistent, which can improve the accuracy of the test of the object under test.

[0068] In some embodiments, the supporting platform 2 is configured to move the shielding body 7 away from the protective position by moving along the first direction x when the calibration component 6 needs to be disassembled and assembled; and to move the shielding body 7 to the protective position by moving in the opposite direction along the first direction x when the calibration mode or detection mode needs to be entered.

[0069] As shown in Figure 6, when the calibration component 6 needs to be installed, the carrying platform 2 is moved along the first direction x toward the side away from the measurement component 5, so that the measurement component 5 is fully exposed, that is, out of the protective position; as shown in Figure 7, the calibration component 6 can now be installed, and then the shielding body 7 can be moved to the protective position for calibration; as shown in Figure 8, after the calibration mode is completed, the calibration component 6 can be removed. As shown in Figure 4, in the calibration state or detection mode, the opening of the shielding body 7 abuts the vertical plate 12, completely surrounding the location of the radiation source 4, the measurement component 5, and the calibration component 6 to protect against radiation.

[0070] This embodiment can conveniently disassemble and assemble the calibration component 6 by moving the carrying platform 2 along the first direction x to switch between the detection mode and the calibration mode. Moreover, when working in these two modes, the shielding body 7 can play a protective role to prevent the leakage of radioactive substances.

[0071] In some embodiments, the carrying platform 2 is configured to 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 along the second direction y.

[0072] When it is necessary to enter the detection mode and calibration mode, when the supporting platform 2 drives the shielding body 7 to move to the protection position along the first direction x, the accelerator assembly 3, the radiation source 4 and the detector assembly 8 also move into place in the first direction x.

[0073] When it is necessary to enter the calibration mode, as shown in Figure 6, the carrying platform 2 is moved along the second direction y so that the detector assembly 8 is aligned with the calibration assembly 6 in the second direction y, and accordingly, the radiation source 4 is located on the side of the calibration assembly 6 away from the measurement assembly 5 along the second direction y.

[0074] When it is necessary to enter the detection mode, as shown in FIG8 and FIG9 , the carrying platform 2 is moved along the second direction y to align the detector assembly 8 with the measurement assembly 5 , and accordingly the radiation source 4 is closer to the measurement assembly 5 along the second direction y.

[0075] Specifically, it can be seen from Figures 1 and 2 that the detector assembly 8 includes a third bracket 81, a shell 82 and a detector 83. The third bracket 81 is fixed on the supporting platform 2, the shell 82 is arranged above the third bracket 81, and the detector 83 is arranged in the shell 82. In the calibration mode, the detector 83 is aligned with the calibration assembly 6 in the second direction y, that is, the detector 83 and the calibration assembly 6 are located on the same straight line, and the straight line extends along the first direction x; in the detection mode, the detector 83 is aligned with the measuring assembly 5 in the second direction y, that is, the detector 83 and the measuring assembly 5 are located on the same straight line, and the straight line extends along the first direction x.

[0076] 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 the carrying platform 2 along the second direction y, so as to flexibly meet the position requirements of the main components in the calibration mode and the detection mode.

[0077] In some embodiments, as shown in FIG2 , in calibration mode, the calibration component 6 is fixed relative to the base 1 and installed between the measurement component 5 and the radiation source 4 along the second direction y; as shown in FIG8 , in detection mode, the calibration component 6 is removed.

[0078] 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 second direction y. In this way, 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 moved closer to the measuring component 5 along the second direction y, 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.

[0079] In some embodiments, as shown in Figures 7 to 9, in the detection mode, the carrying platform 2 is configured to move the radiation source 4 close to the measuring component 5 by moving along the second direction y so that the distance between the radiation source 4 and the measuring component 5 is equal to the distance between the radiation source 4 and the calibration component 6 in the calibration mode.

[0080] As shown in Figure 7, when entering calibration mode, the radiation source 4 is relatively close to the calibration assembly 6. As shown in Figure 8, after calibration, the calibration assembly 6 is removed, and the radiation source 4 is now relatively far away from the measurement assembly 5 along the second direction y. As shown in Figure 9, when entering detection mode, the radiation source 4 is moved along the second direction y toward the measurement assembly 5 until the distance between the radiation source 4 and the measurement assembly 5 in the second direction y matches the distance between the radiation source 4 and the calibration assembly 6 in calibration mode.

[0081] This embodiment can make the distances of the radiation source 4 relative to the object to be detected or the calibration object along the second direction y consistent in the detection mode and the calibration mode, ensuring the same test conditions in the two modes, thereby improving the detection accuracy of the object to be detected.

[0082] In some embodiments, as shown in FIG2 , the calibration assembly 6 includes a first bracket 61 and a calibration slot 62 . The first bracket 61 is used for detachable installation. The calibration slot 62 is pluggable and installed on the first bracket 61 . The calibration slot 62 is used to accommodate a calibration object.

[0083] Specifically, the analysis and detection device also includes a vertical plate 12, which is disposed on a side of the base 1 along the first direction x near the measurement assembly 5. The vertical plate 12 can be provided with a hook or support member for hanging or placing the first bracket 61 on the vertical plate 12, facilitating the complete removal of the calibration assembly 6. The calibration slot 62 can be a rectangular slot, whose length is aligned with the first direction x. The calibration slot 62 is pluggable and mounted on the first bracket 61, allowing for easy replacement of the calibration slot 62 to accommodate different calibration objects, thereby improving calibration efficiency. For example, different calibration slots 62 can hold solutions of different concentrations.

[0084] In some embodiments, a drift tube 30 extending along the second direction y is provided on the side of the accelerator assembly 3 to define the path of the radiation. The drift tube 30 extends into the shield 7, with its end secured to the radiation source 4. This structure facilitates ensuring the positional relationship between the radiation source 4 and the drift tube 30, allowing the radiation in the drift tube 30 to reliably enter the radiation source 4 to generate particles, thereby improving the operational reliability of the analysis and detection device.

[0085] In some embodiments, as shown in FIG2 , a drift tube 30 extending in the second direction y is provided on the side of the accelerator assembly 3 to define the path of the radiation. The drift tube 30 extends into the shield 7 , and the radiation source 4 is fixed to the inner wall of the shield 7 and located at the end of the drift tube 30 . A support tube 13 is provided on the inner wall of the shield 7 , and the radiation source 4 is fixed to the end of the support tube 13 , with the drift tube 30 extending into the support tube 13 . This method of securing the radiation source 4 can improve the reliability of the installation when the radiation source 4 is large or heavy.

[0086] In some embodiments, as shown in FIG1 , FIG3 and FIG4 , the carrying platform 2 includes a lower platform 21 and an upper platform 22 , and the analysis and detection device further includes:

[0087] a first driving component 9, provided between the base 1 and the lower platform 21, for driving the lower platform 21 to move relative to the base 1 in one of a first direction x and a second direction y; and

[0088] The second driving component 10 is provided between the lower platform 21 and the upper platform 22 , and is used for driving the upper platform 22 to move relative to the lower platform 21 along the other of the first direction x and the second direction y.

[0089] The first driving component 9 and the second driving component 10 are both linear driving components, such as electric push rods, cylinders or hydraulic cylinders, or driving components that convert rotational motion into linear motion.

[0090] For example, in Figure 4 , the first driving component 9 drives the lower platform 21 to move relative to the base 1 in a first direction x, and the second driving component 10 drives the upper platform 22 to move relative to the lower platform 21 in a second direction y. The first driving component 9 and the second driving component 10 may be connected by an end-hinged connection, with one end of the first driving component 9 hinged to the base 1 and the other end connected to the lower platform 21. As shown in Figure 3 , the lower platform 21 is provided with a first hinge lug 14, and the upper platform 22 is provided with a second hinge lug 15. One end of the second driving component 10 is hinged to the first hinge lug 14, and the other end is hinged to the second hinge lug 15.

[0091] This embodiment configures the carrier platform 2 as a double-layer platform, which facilitates movement of the carrier platform 2 in two directions, with each direction of movement being independent of the other, making it easier to control. Furthermore, by providing two drive components to drive the two carrier platforms 2 in two directions, the degree of automation of the switching between calibration mode and detection mode of the analysis and detection device can be improved, thereby increasing efficiency and control accuracy and reducing manual intervention.

[0092] In some embodiments, the area of ​​the lower platform 21 is smaller than that of the upper platform 22. Since the upper platform 22 needs to simultaneously mount the accelerator assembly 3, the shield 7, and the detector assembly 8, which requires a larger area, the lower platform 21 is configured to have a smaller area to save material and facilitate the installation of the second driving component 10 between the lower platform 21 and the upper platform 22. The end of the second driving component 10 can be connected to the end of the upper platform 22 or an area near the middle.

[0093] In some embodiments, as shown in FIG. 4 , the analysis and detection device further includes two guide rails 11 . The two guide rails 11 are spaced apart on the base 1 , and the extending direction of the guide rails 11 is consistent with the moving direction of the lower platform 21 .

[0094] For example, in FIG. 4 , the lower platform 21 moves along a first direction x, and two guide rails 11 are spaced apart along a second direction y, with each guide rail 11 extending along the first direction x.

[0095] This embodiment provides two guide rails 11 to guide the movement of the lower platform 21, which can make the movement of the lower platform 21 smoother and more stable, and can also improve the support stability of the lower platform 21 on the upper platform 22 and the components arranged thereon, thereby improving the movement control accuracy.

[0096] In some embodiments, a guide member, such as a guide wheel or rolling bearing, is provided between the lower platform 21 and the upper platform 22. To position the guide member, grooves are provided on the opposing surfaces of the lower platform 21 and the upper platform 22, into which the guide member is received. This structure can guide the movement of the upper platform 22 and improve the stability of the components on the upper platform 22 during movement.

[0097] In some embodiments, as shown in Figure 12, the accelerator assembly 3 includes: a second bracket 31 and an accelerator 32, the second bracket 31 is fixed to the supporting platform 2, specifically, the second bracket 31 is fixed to the upper platform 22, and the accelerator 32 is movably mounted on the second bracket 31 along the second direction y.

[0098] In this embodiment, the accelerator 32 is movable along the second direction y relative to the second bracket 31 on the basis of the carrying platform 2 driving the accelerator assembly 3 to move along the second direction y. When the accelerator 32 needs to be maintained, the accelerator 32 can be pushed outward along the second direction y relative to the second bracket 31 to facilitate inspection and maintenance of the accelerator.

[0099] The specific working principle of the analysis and detection device disclosed in the present invention is described below.

[0100] As shown in FIG6 , before entering the calibration mode, the first driving component 9 is controlled to retract to drive the shielding body 7 to leave the protection position through the carrying platform 2 , completely exposing the measuring component 5 .

[0101] As shown in Figure 7, the calibration assembly 6 is mounted on the vertical plate 12 and positioned between the radiation source 4 and the measurement assembly 5 along the second direction y. Next, the second drive component 10 is controlled to move the components thereon along the second direction y via the carrying platform 2, so that the radiation source 4 and the calibration assembly 6 reach a predetermined distance, and the detector 83 is aligned with the calibration assembly 6. Subsequently, the first drive component 9 is controlled to extend through the carrying platform 2, driving the shield 7 to a protective position, completely surrounding the measurement assembly 5, calibration assembly 6, and radiation source 4. This allows calibration mode operation.

[0102] If the calibration component 6 needs to be replaced, the corresponding processes in Figures 6 and 7 can be repeated.

[0103] As shown in FIG8 , before entering the detection mode, the first driving component 9 is controlled to retract through the carrying platform 2 to drive the shielding body 7 out of the protective position, completely exposing the measuring component 5 and removing the calibration component 6.

[0104] As shown in Figure 9, the second driving component 10 is controlled to drive the components thereon to move along the second direction y through the carrying platform 2, so that the radiation source 4 approaches the measuring component 5 until the radiation source 4 and the measuring component 5 also reach a preset distance and the detector 83 is aligned with the measuring component 5.

[0105] As shown in Figures 10 and 11, the first driving component 9 is controlled to extend through the carrying platform 2 to drive the shielding body 7 to the protective position, completely surrounding the measuring component 5, the calibration component 6 and the radiation source 4. In this way, the detection mode can be operated.

[0106] Secondly, the present disclosure provides a spent fuel reprocessing system, including the analysis and detection device of the aforementioned embodiment. Spent fuel refers to nuclear fuel discharged from a reactor after being burned to a certain extent. A spent fuel reprocessing system processes spent fuel from a reactor, separating useful elements (such as uranium and plutonium) from fission products and other substances for use in the manufacture of new nuclear fuel elements, achieving partial recycling of nuclear fuel, or extracting plutonium for use in nuclear weapons manufacturing.

[0107] The disclosed analytical detection device can be used to detect specific components in spent fuel. Because it can flexibly switch between calibration and detection modes, facilitating testing and maintenance, it can also minimize the impact of prolonged downtime for calibration on the overall operating efficiency of the spent fuel reprocessing system. Furthermore, because the test material is toxic or radioactive, the shield 7 protects the operator in both calibration and detection modes, ensuring safety.

[0108] Finally, the method for using the analysis and detection device of the above embodiment is described. In some embodiments, it includes:

[0109] When the calibration component 6 needs to be disassembled, the carrying platform 2 is moved along the first direction x to remove the shielding body 7;

[0110] When it is necessary to enter the calibration mode or the detection mode, the carrying platform 2 is moved along the first direction x so that the shielding body 7 is in the radiation protection position;

[0111] When it is necessary to enter the calibration mode or the detection mode, the carrying platform 2 is moved along the second direction y so that the positions of the radiation source 4 and the detector assembly 8 match the calibration assembly 6 or the measurement assembly 5 .

[0112] This embodiment designs the carrying platform 2 to move in two degrees of freedom, which can flexibly switch the analysis and detection device between calibration mode and detection mode, facilitate detection and maintenance, and reduce the impact of long-term shutdown and calibration of the analysis and detection device on the efficiency of the entire production system.

[0113] Furthermore, by moving the carrying platform 2 along the first direction x, the calibration assembly 6 can be easily removed and installed to switch between detection mode and calibration mode. In both modes, the shield 7 provides protection, preventing leakage of radioactive material and protecting operators from harm. By moving the carrying platform 2 along the second direction y, the positions of the radiation source 4 and detector assembly 8 can be aligned with either the measurement assembly 5 or the calibration assembly 6, flexibly meeting the positioning requirements of the main components in both calibration and detection modes.

[0114] In some embodiments, when it is necessary to enter the calibration mode or the detection mode, the carrying platform 2 is first moved to a position along the second direction y, and then moved to a position along the first direction x. Optionally, these two steps can also be interchanged.

[0115] Specifically, when it is necessary to enter the calibration mode, the carrying platform 2 is first moved along the second direction y until the detector assembly 8 is aligned with the calibration assembly 6 in the second direction y, and at the same time, the radiation source 4 and the calibration assembly 6 have a preset distance in the second direction y, and then the carrying platform 2 is moved along the first direction x so that the shielding body 7 reaches the protective position.

[0116] When it is necessary to enter the detection mode again, the carrying platform 2 is first moved along the second direction y until the detector assembly 8 is aligned with the calibration assembly 6 in the second direction y, and at the same time, the radiation source 4 and the calibration assembly 6 have a preset distance in the second direction y, and then the carrying platform 2 is moved along the first direction x so that the shielding body 7 reaches the protective position.

[0117] In this embodiment, the carrying platform 2 is first moved into position along the second direction y, and then moved into position along the first direction x. When the shielding body 7 is in the open state, it is convenient to observe whether the detector assembly 8 and the radiation source 4 are adjusted to the correct position. If there is a deviation in the position, it is convenient to correct it. After confirming that the adjustment is in place, the shielding body 7 is moved again along the first direction to reach the protective position.

[0118] In some embodiments, as shown in FIG12 , the accelerator assembly 3 includes: a second bracket 31 and an accelerator 32 , wherein the second bracket 31 is fixed to the carrying platform 2 , and the accelerator 32 is movably mounted on the second bracket 31 along the second direction y; the method of use further includes:

[0119] When the accelerator 32 needs to be repaired, the accelerator 32 is moved relative to the second bracket 31 along the second direction y toward a direction away from the shielding body 7 .

[0120] In this embodiment, the accelerator 32 is movable along the second direction y relative to the second bracket 31 on the basis of the carrying platform 2 driving the accelerator assembly 3 to move along the second direction y. When the accelerator 32 needs to be maintained, the accelerator 32 can be pushed outward along the second direction y relative to the second bracket 31 to facilitate inspection and maintenance of the accelerator.

[0121] 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. The description of the above embodiments is only used to help understand the method 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, comprising: a base (1); a carrying platform (2) movably arranged on the base (1) along a first direction (x) and a second direction (y) perpendicular to each other in a horizontal plane; an accelerator assembly (3) and a radiation source (4), the radiation source (4) is located on one side of the accelerator assembly (3) along the second direction (y), the relative position of the radiation source (4) and the accelerator assembly (3) is fixed, and is used for receiving rays emitted by the accelerator assembly (3) to generate particles; a measurement assembly (5) fixedly installed relative to the base (1) for accommodating an object to be inspected to achieve a detection mode; a calibration assembly (6) detachably arranged for accommodating a calibration object to achieve a calibration mode; a shielding body (7) for shielding rays for the radiation source (4), the measurement assembly (5) and the calibration assembly (6); and a detector assembly (8) arranged on one side of the shielding body (7) along the first direction (x) for receiving particles after interacting with the object to be inspected or the calibration object to analyze the type and content of the object to be inspected or the calibration object; wherein, the accelerator assembly (3), the shielding body (7) and the detector assembly (8) are all arranged on the carrying platform (2), and the carrying platform (2) is configured to drive the shielding body (7) along the first direction (x) to reach or leave a protection position.

2. The analysis and detection device according to claim 1, wherein, The carrying platform (2) is configured to move the shielding body (7) away from the protection position by moving along the first direction (x) when the calibration assembly (6) needs to be disassembled and assembled; and move the shielding body (7) to the protection position by moving in the reverse direction along the first direction (x) when the calibration mode or the detection mode needs to be entered.

3. The analysis and detection device according to claim 1 or 2, wherein, The carrying platform (2) is configured to move the radiation source (4) and the detector assembly (8) to match the position of the measurement assembly (5) or the calibration assembly (6) by moving along the second direction (y).

4. The analysis and detection device according to any one of claims 1 to 3, wherein, in the calibration mode, the calibration assembly (6) is fixed relative to the base (1) and installed between the measurement assembly (5) and the radiation source (4) along the second direction (y); in the detection mode, the calibration assembly (6) is removed.

5. The analysis and detection device according to claim 4, wherein, In the detection mode, the carrying platform (2) is configured to move the radiation source (4) close to the measurement assembly (5) by moving along the second direction (y) so that the distance between the radiation source (4) and the measurement assembly (5) is equal to the distance in the calibration mode.

6. The analysis and detection device according to any one of claims 1 to 5, wherein, in the calibration mode, the detector assembly (8) is aligned with the calibration assembly (6) in the second direction (y); or in the measurement mode, the detector assembly (8) is aligned with the measurement assembly (5) in the second direction (y).

7. The analysis and detection device according to any one of claims 1 to 6, wherein, The calibration component (6) includes a first bracket (61) and a calibration slot (62). The first bracket (61) is used to achieve detachable installation. The calibration slot (62) is detachably installed on the first bracket (61), and the calibration slot (62) is used to accommodate the calibration object.

8. The analysis and detection device according to any one of claims 1 to 7, wherein, A drift tube (30) extending along the second direction (y) is provided on the side of the accelerator component (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.

9. The analysis and detection device according to any one of claims 1 to 7, wherein, A drift tube (30) extending along the second direction (y) is provided on the side of the accelerator component (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 on the inner wall of the shielding body (7) and located at the end of the drift tube (30).

10. The analysis and detection device according to any one of claims 1 to 9, wherein, The carrying platform (2) includes a lower platform (21) and an upper platform (22). The analysis and detection device further includes: A first driving component (9) provided between the base (1) and the lower platform (21) for driving the lower platform (21) to move relative to the base (1) in one of the first direction (x) and the second direction (y); and A second driving component (10) provided between the lower platform (21) and the upper platform (22) for driving the upper platform (22) to move relative to the lower platform (21) in the other of the first direction (x) and the second direction (y).

11. The analysis and detection device according to claim 10, wherein, The area of the lower platform (21) is smaller than the area of the upper platform (22).

12. The analysis and detection device according to claim 10 or 11 further includes two guide rails (11). The two guide rails (11) are spaced apart on the base (1), and the extending direction of the guide rails (11) is the same as the moving direction of the lower platform (21).

13. The analysis and detection device according to any one of claims 1 to 12, wherein, The accelerator component (3) includes: a second bracket (31) and an accelerator (32). The second bracket (31) is fixed to the carrying platform (2), and the accelerator (32) is movably installed on the second bracket (31) along the second direction (y).

14. A spent fuel reprocessing system includes the analysis and detection device according to any one of claims 1 to 13.

Images