An X-ray fluorescence analysis system

Abstract

The present invention provides an X-ray fluorescence analysis system, belonging to the technical field of spent fuel reprocessing. The system includes a shielding chamber, a detection body, an analysis component, a pneumatic transmission component, and a control component. The detection body is arranged in the shielding chamber. The detection body has a receiving cavity for accommodating a sample bottle. A liquid leakage detection component is arranged at the bottom of the receiving cavity. An analysis perspective window is provided on the detection body. The analysis component is arranged in the shielding chamber. The analysis component analyzes and measures the sample to be analyzed in the sample bottle through the analysis perspective window. The pneumatic transmission component is communicated with the receiving cavity. The pneumatic transmission component is used to send the sample bottle into or out of the receiving cavity. The control component is electrically connected to the analysis component, the liquid leakage detection component, and the pneumatic transmission component respectively. In the X-ray fluorescence analysis system provided by the present invention, the liquid leakage detection component detects in real time whether the sample bottle leaks, discovers the liquid leakage in time, and performs subsequent processing of the liquid leakage, so as to avoid the pollution of the entire pneumatic transmission pipeline.

Description

Technical Field

[0001] The present invention relates to the technical field of spent fuel reprocessing, and particularly relates to an X-ray fluorescence analysis system. Background Art

[0002] As a direct analysis method, X-ray fluorescence spectrometry can simultaneously measure the concentrations of uranium, neptunium, and plutonium, and has been widely used in the determination of uranium and plutonium in the spent fuel reprocessing process. This method has the advantages of no need for sample pretreatment, fast analysis speed, and simultaneous measurement of multiple elements.

[0003] The samples in the reprocessing process have a high radioactive level. Usually, a pneumatic transmission method is used to transfer the sample bottles to be analyzed from the shielding chamber to the automatic X-ray fluorescence analysis station for the simultaneous and rapid analysis of trace uranium, neptunium, and plutonium elements. Patent document CN212693798U discloses an automatic analysis and positioning system, which realizes the automatic analysis of sample bottles through the setting of pneumatic transmission pipelines and position detectors. However, this analysis and positioning system does not consider the liquid leakage situation of the sample bottles. When continuing to transmit in the liquid leakage state, it will cause pollution of the entire pneumatic transmission pipeline and affect the measurement accuracy of the system. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the existing analysis system does not consider the liquid leakage situation of the sample bottles. When continuing to transmit in the liquid leakage state, it will cause pollution of the entire pneumatic transmission pipeline and affect the measurement accuracy of the system, so as to provide an X-ray fluorescence analysis system.

[0005] To solve the above technical problem, the present invention provides an X-ray fluorescence analysis system, including:

[0006] A shielding chamber;

[0007] A detection body, arranged in the shielding chamber. The detection body has a receiving cavity for accommodating a sample bottle. A liquid leakage detection member is arranged at the bottom of the receiving cavity, and an analysis perspective window is provided on the detection body;

[0008] An analysis component, arranged in the shielding chamber. The analysis component analyzes and measures the sample to be analyzed in the sample bottle through the analysis perspective window;

[0009] A pneumatic transmission component, communicated with the receiving cavity. The pneumatic transmission component is used to send the sample bottle into or out of the receiving cavity;

[0010] A control member, electrically connected to the analysis component, the liquid leakage detection member, and the pneumatic transmission component respectively.

[0011] Optionally, the pneumatic transmission assembly includes a valve body part for communicating or cutting off the atmosphere inside the pneumatic transmission assembly.

[0012] Optionally, the accommodation cavity has a sample feeding port and a gas feeding port, and the sample bottle in place is located between the sample feeding port and the gas feeding port;

[0013] The pneumatic transmission assembly includes a sample feeding pipe and a gas feeding pipe. The sample feeding pipe is communicated with the sample feeding port, the gas feeding pipe is communicated with the gas feeding port, and the gas feeding pipe is used for communicating with a gas source device.

[0014] Optionally, the sample feeding pipe and the gas feeding pipe are respectively abutted against the detection body, and a sealing member is arranged at the abutting position.

[0015] Optionally, an overflow tank communicated with the accommodation cavity is arranged at the bottom of the detection body.

[0016] Optionally, a carrier for positioning the sample bottle is arranged in the accommodation cavity.

[0017] Optionally, it further includes:

[0018] A recovery assembly, arranged outside the shielding chamber to recover the detection body.

[0019] Optionally, the recovery assembly includes:

[0020] A recovery chamber having an installation cavity. A recovery body is arranged in the installation cavity, and the recovery body forms a recovery cavity. The installation cavity has a receiving port and a disengaging port;

[0021] A movable body is arranged in the installation cavity. The movable body has a channel. The movable body has a first working position where the recovery cavity is communicated with the receiving port through the channel, a second working position where the recovery cavity is communicated with the disengaging port through the channel, and a third working position where the recovery cavity is sealed;

[0022] A recovery driving member is connected to the movable body to drive the movable body to move or rotate to each working position.

[0023] Optionally, it further includes:

[0024] A locking assembly is arranged on the shielding chamber. The locking assembly has a locking end for locking and unlocking the detection body.

[0025] Optionally, it further includes:

[0026] A clamping assembly is arranged inside the shielding chamber. The clamping assembly has a clamping end. A clamping window is arranged on the detection body, and the clamping end is adapted to clamp the sample bottle through the clamping window.

[0027] Optionally, a closed cavity communicating with the accommodation cavity is provided between the clamping assembly and the clamping window.

[0028] Optionally, it further includes:

[0029] A position detection member, disposed in the shielding chamber, having a detection perspective window on the detection body, and the position detection member is adapted to detect the sample bottle through the detection perspective window.

[0030] Optionally, the analysis assembly includes:

[0031] An X-ray generating unit, disposed in the shielding chamber, and the X-ray generating unit emits X-rays to excite a sample to be measured in the sample bottle to generate characteristic energy X-ray fluorescence;

[0032] A detector unit, disposed in the shielding chamber, detects the characteristic energy X-ray fluorescence and transmits the detection signal to the control member.

[0033] The technical solution of the present invention has the following advantages:

[0034] 1. The X-ray fluorescence analysis system provided by the present invention includes a shielding chamber, a detection body, an analysis assembly, a pneumatic transmission assembly and a control member. The detection body has an accommodation cavity for accommodating a sample bottle, and a liquid leakage detection member is disposed at the bottom of the accommodation cavity. During the analysis and measurement process after the sample bottle enters the accommodation cavity, the liquid leakage detection member detects in real time whether the sample bottle leaks. When liquid leakage is detected, the liquid leakage detection member transmits a signal to the control member, and the control member controls the pneumatic transmission assembly to stop transmission, avoiding the continued subsequent transmission work of the leaking sample bottle, enabling timely discovery of liquid leakage and subsequent processing of liquid leakage, and avoiding pollution of the entire pneumatic transmission pipeline;

[0035] The setting of the detection body can not only realize the analysis of the sample bottle, but also detect its liquid leakage situation. The detection body is equivalent to playing an indirect transition role in the shielding chamber for analyzing the sample bottle. Multiple sample bottles are analyzed in sequence in the detection body, and its liquid leakage situation can be detected.

[0036] 2. The X-ray fluorescence analysis system provided by the present invention, the pneumatic transmission assembly includes a valve body member, and the valve body member is used for connecting or cutting off the atmosphere in the pneumatic transmission assembly. When liquid leakage is detected, by operating the valve body member, the atmosphere between the pipeline in the pneumatic transmission assembly and the detection body is timely cut off, avoiding the leaked liquid from spreading to other places in the pipeline under the drive of the continuously transmitted gas, and causing further pollution in the pneumatic transmission assembly.

[0037] 3. The X-ray fluorescence analysis system provided by the present invention has a sample feeding port and an air feeding port in the accommodation cavity. The sample bottle that has been transported to the position is located between the sample feeding port and the air feeding port. The pneumatic transmission assembly includes a sample feeding pipe and an air feeding pipe. The sample feeding pipe is communicated with the sample feeding port, and the air feeding pipe is communicated with the air feeding port. Due to the setting of the detection body, in order to realize the process of pneumatic transmission, the transportation of the sample and the gas are respectively arranged in different pipes. When the gas source device evacuates the air feeding pipe, the sample bottle moves to the designated position under the action of negative pressure. When the gas source device feeds air into the air feeding pipe, the sample bottle moves out of the accommodation cavity under the pushing action of pressure. The settings of the sample feeding pipe and the air feeding pipe are applicable to the accommodation cavity structure without an opening at the bottom, and the sample bottle located between the sample feeding port and the air feeding port can enable the sample bottle to fully reach the designated position.

[0038] 4. The X-ray fluorescence analysis system provided by the present invention, the sample feeding pipe and the air feeding pipe are respectively in contact with the detection body, and a sealing member is arranged at the contact position. Since the detection body is movable and the detection body will leave this position for recovery to avoid the pipeline affecting the movement of the detection body, it is set in a contact state. The setting of the sealing member ensures the airtight state of the accommodation cavity to realize a negative pressure environment and realize the transportation of the sample bottle.

[0039] 5. The X-ray fluorescence analysis system provided by the present invention, an overflow tank communicated with the accommodation cavity is arranged at the bottom of the detection body. After the sample bottle leaks liquid, the liquid can enter the overflow tank in time to avoid the liquid staying in the accommodation cavity for a long time and polluting the pipeline as the gas enters the pipeline.

[0040] 6. The X-ray fluorescence analysis system provided by the present invention, a carrier for positioning the sample bottle is arranged in the accommodation cavity. The setting of the carrier can quickly and accurately enable the sample bottle to reach the designated position, avoid multiple adjustments during the positioning process, and improve the positioning efficiency.

[0041] 7. The X-ray fluorescence analysis system provided by the present invention further includes a recovery assembly, which is arranged outside the shielding room. When it is detected that the sample bottle leaks liquid, the detection body is timely sent into the recovery assembly for recovery to avoid long-term liquid leakage from polluting the pneumatic transmission assembly. By recycling the detection body and the sample bottle as a whole, the overall structure of the sample bottle will not be damaged;

[0042] The recovery component includes a recovery chamber, a movable body, and a recovery driving member. The movable body is initially located at the first working position. When recovery is required, the detection body falls into the recovery cavity through the receiving port. Then, the recovery driving member drives the movable body to move to the third working position. At the third working position, the recovery cavity is in a closed state. In this state, the recovery component is moved to the location to be processed. The closed state setting prevents its radioactivity and toxicity from entering the external environment. When arriving at the location to be processed, the movable body is continuously driven to move to the second working position, and the detection body is sent out from the separation port for processing. The settings of different working positions achieve the safe recovery and removal of the detection body and the sample bottle, without the need for manual touching of the leaking sample bottle. Moreover, the settings of each working position automatically achieve the adjustment of connection and sealing, without the need to set additional sealing structures, and the structure is simple.

[0043] 8. The X-ray fluorescence analysis system provided by the present invention further includes a locking component. The locking component has a locking end, and the locking end is used to lock and unlock the detection body. The setting of the locking component can cooperate with the recovery component to achieve the fixation of the detection body during the analysis process and the recovery in case of leakage.

[0044] 9. The X-ray fluorescence analysis system provided by the present invention further includes a clamping component. The clamping component has a clamping end, and the detection body has a clamping window. The clamping end is adapted to clamp the sample bottle through the clamping window. After the sample bottle reaches the designated position, the clamping component clamps and fixes the sample bottle to prevent movement or shaking during the analysis process from affecting the analysis result.

[0045] 10. In the X-ray fluorescence analysis system provided by the present invention, a closed cavity communicating with the accommodation cavity is provided between the clamping component and the clamping window. The setting of the closed cavity prevents the gas in the pneumatic transmission component from leaking from the clamping window and affecting the negative pressure environment in the accommodation cavity.

[0046] 11. The X-ray fluorescence analysis system provided by the present invention further includes a position detection member. The detection body has a detection perspective window, and the position detection member is adapted to detect the sample bottle through the detection perspective window. The position detection member effectively identifies the state of the sample bottle and provides state feedback, facilitating the monitoring of the sample bottle state by the staff and facilitating the timely handling of abnormal situations. Description of the Drawings

[0047] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0048] Figure 1Schematic diagram of a specific implementation of the X-ray fluorescence analysis system provided in the embodiments of the present invention;

[0049] Figure 2 is Figure 1 schematic diagram of the detection body in

[0050] Figure 3 is Figure 2 schematic diagram of the sectional structure in

[0051] Figure 4 is Figure 1 schematic diagram of the recycling component in

[0052] Figure 5 is Figure 4 schematic diagram of the sectional structure in removing the movable body;

[0053] Figure 6 is Figure 5 schematic diagram of the sectional structure in adding the movable body;

[0054] Figure 7 is Figure 4 schematic diagram of the movable body in

[0055] Figure 8 is Figure 1 schematic diagram of the valve body part in

[0056] Figure 9 is Figure 8 schematic diagram of the sectional structure of

[0057] Figure 10 is Figure 8 schematic diagram of the plugging member in

[0058] Figure 11 is Figure 1 schematic diagram of the clamping component and the locking component in

[0059] Figure 12 is Figure 11 schematic diagram of the locking component in

[0060] Figure 13 is Figure 11 schematic diagram of the sectional structure in

[0061] Figure 14 is Figure 11 schematic diagram of the three-dimensional structure in the top view direction in

[0062] Explanation of reference numerals:

[0063] 1. Shielding chamber; 2. Detection body; 3. Sample bottle; 4. Accommodation cavity; 5. Analytical perspective window; 6. Leakage detection component; 7. Pneumatic transmission component; 8. Control component; 9. Valve body component; 10. Sample feeding port; 11. Air supply port; 12. Sample feeding pipe; 13. Air supply pipe; 14. Sealing component; 15. Overflow tank; 16. Carrier platform; 17. Recycling component; 18. Recycling cavity; 19. Recycling chamber; 20. Installation cavity; 21. Recycling body; 22. Receiving port; 23. Disengagement port; 24. Movable body; 25. Channel; 26. Recycling drive component; 27. Locking component; 28. Locking end; 29. Clamping component; 30. Clamping end; 31. Clamping window; 32. Closed cavity; 33. Position detection component; 34. Detection perspective window; 35. X-ray generating unit; 36. Detector unit; 37. Bottom plate; 38. Cover body; 39. Housing; 40. Valve core; 41. Valve body drive component; 42. Valve cavity; 43. Inlet; 44. Outlet; 45. Connecting component; 46. Plugging component; 47. First elastic component; 48. Inclined surface; 49. Valve rod; 50. Handle; 51. Gas channel; 52. Upper structure body; 53. Middle structure body; 54. Lower structure body; 55. Positioning hole; 56. Locking disk; 57. Handwheel; 58. Rotating shaft; 59. Clamping component; 60. Installation block; 61. Locking rod; 62. Operating rod; 63. Driving rod; 64. Slide groove; 65. Inclined groove; 66. Second elastic component; 67. Clamping drive component; 68. Through groove; 69. Moving rod; 70. Telescopic sleeve; 71. Upper laser sensor; 72. Lower laser sensor; 73. Third elastic component. Detailed implementation manners

[0064] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0065] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0066] In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0067] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0068] The X-ray fluorescence analysis system provided in this embodiment is mainly used for the determination of the concentrations of trace uranium, neptunium, and plutonium elements in radioactive samples. During the analysis process, the liquid leakage situation of the sample bottle is detected and processed in a timely manner to avoid causing large-scale contamination.

[0069] As Figures 1 to 3 shown, a specific implementation manner of the X-ray fluorescence analysis system provided in this embodiment includes a shielding chamber 1, a detection body 2, an analysis component, a pneumatic transmission component 7, and a control component 8. The detection body 2 is arranged inside the shielding chamber 1. The detection body 2 has a receiving cavity 4 for receiving a sample bottle 3. A liquid leakage detection component 6 is arranged at the bottom of the receiving cavity 4. An analysis perspective window 5 is provided on the detection body 2. The analysis component is arranged inside the shielding chamber 1. The analysis component analyzes and measures the sample to be analyzed in the sample bottle 3 through the analysis perspective window 5. The pneumatic transmission component 7 is communicated with the receiving cavity 4. The pneumatic transmission component 7 is used to send the sample bottle 3 into or out of the receiving cavity 4. The control component 8 is electrically connected to the analysis component, the liquid leakage detection component 6, and the pneumatic transmission component 7 respectively.

[0070] During the process of analyzing and measuring after the sample bottle 3 enters the receiving cavity 4, the liquid leakage detection component 6 detects in real time whether the sample bottle 3 leaks. When liquid leakage is detected, the liquid leakage detection component 6 transmits a signal to the control component 8. The control component 8 controls the pneumatic transmission component 7 to stop transmission, avoiding the continued subsequent transmission work of the leaking sample bottle 3, and can timely detect liquid leakage and perform subsequent liquid leakage treatment to avoid contamination of the entire pneumatic transmission pipeline.

[0071] Specifically, the sample bottle 3 is a radioactive sample bottle, and the sample to be analyzed is contained inside. In this embodiment, the sample bottle 3 can realize an automatic analysis process. Under the action of the pneumatic transmission component 7, the sample bottle 3 is transmitted to a specified position in the receiving cavity 4. Then, the analysis component analyzes and measures the sample bottle through the analysis perspective window 5. The data obtained from the analysis and measurement is transmitted to the control component 8 for convenient data feedback. Among them, the control component 8 is a controller.

[0072] As Figure 1 shown, for a specific embodiment of the shielding chamber 1, the shielding chamber 1 is provided to prevent the radiation leakage of β and γ rays. The shielding chamber 1 includes a bottom plate 37 and a cover 38. The cover 38 is a box structure with an open bottom. A groove is provided at a position on the bottom plate 37 opposite to the cover 38, and the lower edge of the cover 38 is clamped in the groove. The shielding chamber 1 is arranged in a "biting type" to prevent rays from emitting from any angle, and the shielding chamber 1 is a split structure, which is convenient for the transportation and installation of the shielding chamber 1. In addition, a guide rail structure can also be provided between the cover 38 and the bottom plate 37 to facilitate the opening and closing of the bottom plate 37 and the cover 38, without manual operation, and the opening and closing between the two can be automatically realized through control. A recovery hole is provided on the bottom plate 37 for being oppositely arranged with the subsequent recovery component 17, so that the detection body 2 can fall into the recovery component 17 from the recovery hole.

[0073] As Figure 1 shown, for the X-ray fluorescence analysis system provided in this embodiment, the pneumatic transmission component 7 includes a valve body part 9, and the valve body part 9 is used for the atmosphere communication or cut-off inside the pneumatic transmission component 7. When detecting liquid leakage, by operating the valve body part 9, the atmosphere between the pipeline inside the pneumatic transmission component 7 and the detection body 2 is timely cut off, so as to prevent the leaked liquid from spreading to other places inside the pipeline driven by the continuously transmitted gas, causing further pollution inside the pneumatic transmission component 7.

[0074] As Figures 8 to 10 shown, for a specific embodiment of the valve body part 9, the valve body part 9 includes a housing 39, a valve core 40 and a valve body driving part 41. The housing 39 has a valve cavity 42, and the valve cavity 42 has an inlet 43 and an outlet 44. The valve core 40 is slidably arranged in the valve cavity 42. The valve core 40 has a communicating part 45 and a blocking part 46. The communicating part 45 is used for communicating the inlet 43 and the outlet 44, and the blocking part 46 is used for blocking the inlet 43 and the outlet 44. The valve body driving part 41 is connected to the valve core 40, and by driving the valve core 40 to move, the blocking or communication of the inlet 43 and the outlet 44 is realized.

[0075] Wherein, the inlet 43 and the outlet 44 are oppositely arranged. The communicating part 45 can be a communicating pipe structure, and the axis of the communicating part 45 is parallel to the axis of the inlet 43. The blocking part 46 includes a blocking head, and there are two blocking heads, which are respectively used for blocking the inlet 43 and the outlet 44. The pipeline can be connected at the inlet 43 and the outlet 44 by flange fixing, and its outlet 44 can also be directly abutted against the detection body 2 to communicate with the air supply port 11 or the sample feeding port 10.

[0076] As Figure 10As shown, in an improved embodiment of the plugging member 46, a first elastic member 47 is provided between the two plugging heads. The first elastic member 47 has an elastic force that causes the two plugging heads to move away from each other. The first elastic member 47 can be a spring. Under the action of the first elastic member 47, the plugging is more stable. An inclined surface 48 is provided on the side wall of the top surface of the plugging head, which facilitates the smooth and rapid departure of the plugging head from the inlet 43 and the outlet 44 under the action of driving, avoiding interference between the plugging head and the inlet 43 and the outlet 44 and affecting the movement.

[0077] As Figure 8 shown, in a specific embodiment of the valve body driving member 41, the valve body driving member 41 includes a valve rod 49 and a handle 50. One end of the valve rod 49 extends into the valve cavity 42 and is connected to the valve core 40, and the other end is arranged outside and connected to the handle 50. By pushing the valve rod 49 through the handle 50, the valve core 40 is driven to move. When the valve rod 49 rotates, the valve core 40 can be driven to rotate. When the valve core 40 performs plugging, it can be rotated so that the plugging head is directly opposite to the inlet 43 and the outlet 44 to achieve atmosphere isolation; or the valve core 40 can be driven to rotate to overcome the elastic force of the first elastic member 47 to cancel the plugging.

[0078] In an improved embodiment of the plugging member 46, the plugging head of the plugging member 46 is provided with a spherical structure and is made of a soft metal material. The rotation of the valve rod 49 can form sufficient pressure to achieve metal contact sealing, and the sealing is safe and reliable.

[0079] In an improved embodiment of the valve body driving member 41, the valve rod 49 is locked to the housing 39 through a flange plate. When the valve body member 9 is connected or cut off, the flange screw is tightened to lock the valve rod 49, avoiding accidental rotation or sliding of the valve rod 49 and causing the valve action to fail.

[0080] In addition, as an alternative embodiment, the valve body member 9 can also be a conventional solenoid valve or other valve body structures.

[0081] As Figure 1 and Figure 3 shown, the X-ray fluorescence analysis system provided in this embodiment, the accommodation cavity 4 has a sample feeding port 10 and a gas feeding port 11. The sample bottle 3 in place of transmission is located between the sample feeding port 10 and the gas feeding port 11. The pneumatic transmission assembly 7 includes a sample feeding pipe 12 and a gas feeding pipe 13. The sample feeding pipe 12 is communicated with the sample feeding port 10, the gas feeding pipe 13 is communicated with the gas feeding port 11, and the gas feeding pipe 13 is used to be communicated with a gas source device. Specifically, the gas source device can be a suction pump or a vacuum pump, and the processes of pumping air or feeding air can be carried out.

[0082] Due to the setting of the detection body 2, in order to implement the pneumatic transmission process, the pipelines for transporting the sample and the gas are separately arranged. When the gas source device evacuates the air supply pipe 13, the sample bottle 3 moves to the designated position under the action of negative pressure. When the gas source device supplies air to the air supply pipe 13, the sample bottle 3 moves out of the accommodation cavity 4 under the pushing action of the pressure. The settings of the sample delivery pipe 12 and the air supply pipe 13 are applicable to the structure of the accommodation cavity 4 with a non-open bottom, and the sample bottle 3 located between the sample delivery port 10 and the air supply port 11 enables the sample bottle 3 to fully reach the designated position.

[0083] As Figure 2 and Figure 3 shown, a specific implementation of the detection body 2 is provided. A gas channel 51 parallel to the accommodation cavity 4 is arranged inside the detection body 2. The gas channel 51 communicates with the outside and the air supply port 11. The detection body 2 includes an upper structure body 52, a middle structure body 53, and a lower structure body 54. The upper structure body 52, the middle structure body 53, and the lower structure body 54 are connected into one body by socket head cap screws. Carbon sealing washers are provided between the upper structure body 52 and the middle structure body 53, and between the middle structure body 53 and the lower structure body 54 for sealing. The thickness of the sealing washer is about 2 mm.

[0084] Specifically, the upper structure body 52 is provided with a positioning hole 55. The positioning hole 55 is in positioning cooperation with the dowel pin provided on the pneumatic transmission assembly 7, realizing the complete positioning between the pipeline and the detection body 2. The upper structure body 52 is also provided with an analysis perspective window 5, a detection perspective window 34, and a clamping window 31. There are two clamping windows 31 symmetrically arranged. The detection perspective window 34 is arranged both above and below, with two in each group symmetrically arranged, a total of four. The detection perspective window 34 and the clamping window 31 will be mentioned in the subsequent description. The analysis perspective window 5 is a primary and secondary carbon fiber window. The primary and secondary carbon fiber windows serve as primary and secondary X-ray transmission windows. The carbon fiber material has small absorption of X-rays on the one hand, and on the other hand, has good corrosion resistance, radiation resistance, and is not easily damaged, etc. The detection perspective window 34 is a lead glass window. The lead glass window selects ZF-7 lead glass with a thickness of about 8 mm. The lead glass has small absorption of laser intensity and has a certain absorption and shielding ability for X-rays.

[0085] The middle structure body 53 is provided with a socket head cap screw mating through hole and the detection perspective window 34. The socket head cap screw mating through hole is used to connect the upper structure body 52, the middle structure body 53, and the lower structure body 54 into one body with socket head cap screws. The lower structure body 54 is provided with an overflow tank 15 and a liquid leakage detection member 6. The overflow tank 15 communicates with the accommodation cavity 4. After the sample bottle 3 leaks, the liquid can enter the overflow tank 15 in time, avoiding the liquid staying in the accommodation cavity 4 for a long time and entering the pipeline with the gas to contaminate the pipeline. And the gas channel 51 is arranged in the upper structure body 52 and the middle structure body 53.

[0086] As Figure 3As shown, a specific embodiment of the liquid leakage detection member 6. The liquid leakage detection member 6 includes a liquid sensor. The liquid sensor adopts a special induction element curve distribution and is ceramic potted, enabling long-term maintenance-free use under irradiation conditions. Among them, the liquid sensor includes a ceramic electrode plate and electrodes wound around the ceramic electrode plate. The electrode leads are respectively connected to the probe contacts. When the detection body 2 is detached and recycled, the probe can slide away from the contact by itself. The electrodes are wound around the ceramic electrode plate and are distributed on both sides. An overflow hole is provided on the electrode plate, and excess liquid will flow into the overflow tank 15 through the overflow hole. The volume of the overflow chamber is about 10 mL, the minimum detectable liquid leakage is about 0.03 ml, and the diameter range covered by the electrodes is about This range is larger than the cross-section of the sample bottle 3, and the liquid leakage situation can be completely detected.

[0087] As Figure 3 shown, in an improved embodiment of the detection body 2, a carrier 16 for positioning the sample bottle 3 is provided in the accommodation chamber 4. The setting of the carrier 16 can quickly and accurately make the sample bottle reach the designated position, avoiding multiple adjustments during the positioning process and improving the positioning efficiency. The carrier 16 is a ring-shaped convex structure, and the setting of the carrier 16 defines the lowest position of the sample bottle 3.

[0088] As Figures 1 to 3 shown, in the X-ray fluorescence analysis system provided in this embodiment, the sample delivery tube 12 and the gas delivery tube 13 are respectively in contact with the detection body 2, and a seal 14 is provided at the contact position. Since the detection body 2 is movable and will leave this position for recycling to avoid the pipeline affecting the movement of the detection body 2, it is set in a contact state. The setting of the seal 14 ensures the airtight state of the accommodation chamber 4 to achieve a negative pressure environment and realize the transportation of the sample bottle. Specifically, the seal 14 is an O-ring.

[0089] As Figure 1 shown, the X-ray fluorescence analysis system provided in this embodiment further includes a recycling component 17, which is arranged outside the shielding chamber 1 to recycle the detection body 2. When it is detected that the sample bottle 3 has liquid leakage, the detection body 2 is timely sent into the recycling component 17 for recycling, avoiding long-term liquid leakage from contaminating the pneumatic transmission component 7. By recycling the detection body 2 and the sample bottle 3 as a whole, the overall structure of the sample bottle 3 will not be damaged.

[0090] As Figures 4 to 7As shown in the figure, the X-ray fluorescence analysis system provided in this embodiment, the recovery component 17 includes a recovery chamber 19, a movable body 24 and a recovery driving member 26. The recovery chamber 19 has an installation cavity 20, a recovery body 21 is arranged in the installation cavity 20, the recovery body 21 forms a recovery cavity 18, and the installation cavity 20 has an acceptance port 22 and a separation port 23; the movable body 24 is arranged in the installation cavity 20, the movable body 24 has a channel 25, and the movable body 24 has a first working position where the recovery cavity 18 is communicated with the acceptance port 22 through the channel 25, a second working position where the recovery cavity 18 is communicated with the separation port 23 through the channel 25, and a third working position where the recovery cavity 18 is sealed; the recovery driving member 26 is connected to the movable body 24 to drive the movable body 24 to move or rotate to each working position. The recovery body 21 is fixedly arranged on the recovery chamber 19, and the movable body 24 is movably connected to the recovery chamber 19 relatively. Through the relative movement of the recovery body 21 and the recovery chamber 19, the movement between each working position is realized.

[0091] The movable body 24 is initially located at the first working position. When recovery is required, the detection body 2 falls into the recovery cavity 18 through the acceptance port 22, and then the recovery driving member 26 drives the movable body 24 to move to the third working position. The setting of the sealed state of the recovery cavity 18 in the third working position avoids its radioactivity and toxicity from entering the external environment. When reaching the place to be processed, continue to drive the movable body 24 to move to the second working position, and send the detection body 2 out from the separation port 23 for processing. The setting of different working positions realizes the safe recovery and removal of the detection body 2 and the sample bottle 3, and there is no need for manual touch of the leaking sample bottle; and the setting of each working position realizes the adjustment of connection and sealing by itself, and there is no need to set an additional sealing structure, and the structure is simple.

[0092] As Figures 5 to 7 As shown in the figure, an improved implementation manner of the recovery component 17, the installation cavity 20 is a circular cavity structure, the acceptance port 22 is located at the upper end of the installation cavity 20, the separation port 23 is located at the lower end of the installation cavity 20, and the recovery cavity 18 is a cavity structure with upper and lower openings and is arranged opposite to the acceptance port 22 and the separation port 23; the outer side of the movable body 24 is adapted to the structure of the installation cavity 20, the movable body 24 has a circular movable cavity that cooperates with the recovery body 21, the channel 25 is communicated with the circular movable cavity, and the movable body 24 is located at each working position through rotation. The setting of the installation cavity 20 as a circular cavity structure makes the structure of the recovery chamber 19 relatively compact; and it ensures that the detection body 2 and the sample bottle 3 are always placed vertically, avoiding the liquid from flowing out due to the shaking of the detection body 2.

[0093] Specifically, the recovery driving member 26 includes a locking disk 56, a handwheel 57 and a rotating shaft 58. The rotating shaft 58 is connected to the movable body 24, and the other end extends out of the recovery chamber 19. The locking disk 56 is arranged outside the recovery chamber 19 and is connected to the rotating shaft 58. Three notches are provided on the locking disk 56, and a movable clamping member 59 is arranged on the outer side wall of the recovery chamber 19. The three notches can be cooperated with the clamping member 59 through rotation. The three notches respectively correspond to three working positions. The handwheel 57 is connected to the outer end of the rotating shaft 58, and the rotation of the handwheel 57 is used to realize the rotational drive of the movable body 24. The rotating shaft 58 has a rolling bearing, and the bearing is installed in the recovery chamber 19. When operating the rotating shaft 58 and the handwheel 57 to rotate the rotating core, it can be easily rotated without too much torque, and the operation is convenient.

[0094] In addition, as an alternative embodiment, the installation cavity 20 can also be a rectangular groove structure. The movable body 24 is no longer in a rotating manner, but is arranged to move horizontally. At this time, the recovery body 21 is in a movable state, and the receiving port 22 and the separation port 23 are arranged to be vertically staggered. The position between the two ports is the sealed position. By driving the horizontal movement of the movable body 24, the alternation of three working positions in the horizontal direction is realized.

[0095] In another specific embodiment of the recovery assembly 17, the recovery chamber 19 is usually provided with hanging ears and feet. The hanging ears are used for connecting the recovery chamber 19 to the bottom plate of the shielding chamber 1, and also serve as the lifting hanging parts when the recovery chamber 19 is moved. The feet are used for supporting the recovery chamber 19 to facilitate the use of moving tools.

[0096] As Figure 1 、 Figures 11 to 13 shown, the X-ray fluorescence analysis system provided in this embodiment further includes a locking assembly 27. The locking assembly 27 is arranged on the shielding chamber 1. The locking assembly 27 has a locking end 28, and the locking end 28 is used for locking and unlocking the detection body 2. The setting of the locking assembly 27 can cooperate with the recovery assembly 17 to realize the fixation during the analysis of the detection body 2 and the recovery in case of liquid leakage.

[0097] As Figures 11 to 14 shown, the X-ray fluorescence analysis system provided in this embodiment further includes a clamping assembly 29. The clamping assembly 29 is arranged in the shielding chamber 1. The clamping assembly 29 has a clamping end 30. The detection body 2 has a clamping window 31. The clamping end 30 is adapted to clamp the sample bottle 3 through the clamping window 31. After the sample bottle 3 reaches the designated position, the clamping assembly 29 clamps and fixes the sample bottle 3 to avoid movement or shaking during the analysis, which may affect the analysis result.

[0098] As Figure 11 and Figure 13As shown in the figure, the X-ray fluorescence analysis system provided in this embodiment further includes a position detector 33. The position detector 33 is disposed inside the shielding chamber 1. The detector body 2 is provided with a detection perspective window 34. The position detector 33 is adapted to detect the sample bottle 3 through the detection perspective window 34. The position detector 33 effectively identifies the state of the sample bottle 3 and provides state feedback, facilitating the staff to monitor the state of the sample bottle 3 and promptly handle abnormal situations.

[0099] As Figure 11 shown in the figure, in a specific embodiment, the locking assembly 27, the clamping assembly 29 and the position detector 33 are integrally arranged. The integrated body includes a mounting block 60. The mounting block 60 has a split structure, which is convenient for installation. The mounting block 60 has an opening in the middle for mounting the detector body 2, and sliding grooves 64 are provided on both sides of the mounting block 60.

[0100] As Figure 12 shown in the figure, there are two locking assemblies 27, which are respectively arranged on both sides of the mounting block 60. The locking assembly 27 includes a locking rod 61, an operating rod 62 and a driving rod 63. The locking rod 61 is slidably disposed in the sliding groove 64. The end of the locking rod 61 abuts against the clamping window. The driving rod 63 is disposed on the mounting block 60. One end of the operating rod 62 is connected to the driving rod 63, and the other end is cooperatively connected to an inclined groove 65 on the locking rod 61. The bottom of the driving rod 63 has an inclined rod. By inserting the inclined rod into the inclined groove 65, the locking rod 61 is driven to move away from the detector body 2. A second elastic member 66 is disposed on the locking rod 61. The second elastic member 66 is a spring. The second elastic member 66 has an elastic force that locks the locking end 28 on the locking rod 61 and the detector body 2. When the inclined rod moves, it can overcome this elastic force to unlock. Among them, the connection between the driving rod 63 and the operating rod 62 is in the form of a screw and nut. By rotating the operating rod 62, the driving rod 63 moves in the up and down direction, thereby realizing the action of the inclined rod on the inclined groove 65. The locking end 28 is disposed at the inner end of the locking rod 61. The locking end 28 is a circular pointed convex structure, which cooperates with the groove provided on the clamping window 31 to achieve the locked state. When locking is required, the inclined rod leaves the inclined groove 65. When unlocking is required, the driving inclined rod is inserted into the inclined groove 65. The outer end of the operating rod 62 extends outside the shielding chamber 1 for easy operation.

[0101] As Figure 13As shown, there are two clamping assemblies 29, which are respectively arranged on both sides of the mounting block 60. The clamping assembly 29 includes a clamping driving member 67. A clamping end 30 is arranged at the output end of the clamping driving member 67. A through groove 68 is provided inside the locking rod 61. The clamping driving member 67 is arranged on the mounting block 60. Its moving rod 69 passes through the through groove 68 and is connected to the clamping end 30. The clamping driving member 67 drives the clamping end 30 to move to clamp and reset the sample bottle 3. A telescopic sleeve 70 is arranged on the moving rod 69. The telescopic sleeve 70 is a columnar corrugated shape made of special material, which is used to isolate the detection body 2 from the external environment and ensure that the detection body 2 works under negative pressure conditions. The clamping driving member 67 can be a pneumatic slide or an electric slide structure. The cylinder can adopt double piston rods, with large output force. The slide guide rail adopts a crossed roller guide rail, with high precision, stable movement, no looseness, wear resistance and long service life.

[0102] As Figure 14 shown, in an improved embodiment of a clamping assembly 29, a third elastic member 73 is arranged at the output end of the clamping driving member 67. The third elastic member is a spring. When the driving member fails and the air supply is cut off, it can ensure that the sample bottle 3 is evacuated from the sample bottle by the pneumatic transmission assembly 7 after the claws are released, realizing automatic source removal;

[0103] In another improved embodiment of the clamping assembly 29, a state sensor is arranged on the clamping end 30 to detect the state of the clamping end 30 and feed back the state information to the control member 8.

[0104] The clamping end 30 is a V-shaped elastic finger. The sample bottle 3 is clamped through the V-shaped elastic finger. The sample bottle 3 is not directly affected by the driving member. The sample bottle 3 is clamped only by the elastic force generated by the deformation of the elastic finger. The thickness of the V-shaped elastic finger is about 0.3 mm, with good elasticity and no deformation after being pressed 100,000 times. Specifically, the elastic finger is an arc-shaped finger, and the arc-shaped finger is a 60° circular arc shape, which can be self-centered and closely attached to the outer circular surface of the sample bottle 3.

[0105] As Figure 13 shown, the position detection member 33 includes an upper laser sensor 71 and a lower laser sensor 72. Slits are provided at positions on the mounting block 60 opposite to the detection perspective window 34. The upper laser sensor 71 and the lower laser sensor 72 are respectively arranged at the ends of the slits at the upper and lower positions. Both include a transmitter and a receiving laser. The laser transmitter emits a laser beam that passes through the slit, passes through the detection perspective window 34 and reaches the receiving laser. The upper and lower beams emitted by the upper laser sensor and the lower laser sensor are each blocked by half by the sample bottle. Recording the change in light intensity can be used as a standard intensity value for judging whether the sample bottle is correctly positioned. By combining the upper and lower beam intensity signals, the position state of the sample bottle can be accurately identified and recorded; the sensors are all arranged outside the mounting block 60 to avoid the influence of the sample radioactivity on the sensor performance and at the same time facilitate maintenance.

[0106] The positioning test of the clamping assembly 29 in this embodiment is reliable in performance, and the positioning accuracy is better than ±0.02 mm.

[0107] In addition, as an alternative embodiment, the locking assembly 27, the clamping assembly 29, and the position detector 33 may not be integrated, and each may act on the sample bottle 3 separately.

[0108] As Figure 1 As shown, the X-ray fluorescence analysis system provided in this embodiment is provided with a closed cavity 32 communicating with the accommodation cavity 4 between the clamping assembly 29 and the clamping window 31. The setting of the closed cavity 32 prevents the gas in the pneumatic transmission assembly 7 from leaking from the clamping window 31 and affecting the negative pressure environment in the accommodation cavity 4.

[0109] All the sealing methods involved in this embodiment adopt metal hard sealing methods, which are not easy to age, can effectively compensate for assembly deviations, dynamically compensate for mechanical wear, and have high reliability.

[0110] Normal working process without liquid leakage: After the sample bottle 3 reaches the stage 16 in the detector 2 through the sample delivery tube 12 in the pneumatic transmission assembly 7 and is in place, the clamping driver 67 drives the clamping end 30 to move towards the detector 2 until it passes through the clamping window 31, and then the clamping end 30 clamps the sample bottle 3.

[0111] After clamping, the position detector 33 detects the position of the sample bottle to determine whether it is in place correctly.

[0112] After confirming that the position state of the sample bottle 3 is correct, the analysis and measurement of the sample bottle 3 are started, and the measurement process will be analyzed later.

[0113] After the measurement and analysis of the sample bottle 3 are completed, the control 8 sends a measurement completion signal to the clamping assembly 29, and the clamping driver 67 drives the clamping end 30 to retract and then reset to release the clamping of the sample bottle 3; then the sample bottle 3 is transmitted out of this analysis system under the action of the pneumatic transmission assembly 7.

[0114] Working process for recovery in case of liquid leakage: After the liquid leakage detector 6 inside the detector 2 detects that the sample bottle 3 leaks and contaminates the detector 2, the liquid leakage signal is fed back to the control 8, and the pneumatic transmission of the sample bottle 3 stops.

[0115] The valve body part 9 switches to the cut-off state to cut off the atmosphere between the pneumatic transmission assembly 7 and the detector 2.

[0116] Keep the moving body 24 in the recovery assembly 17 at the first station, and make the detector 2 enter the recovery chamber 18.

[0117] Operate the recovery driving member 26 to move the movable body 24 to the third working station, place the detection body 2 in the closed space, safely move the detection body 2 to the place to be processed, and then drive the movable body 24 to move to the second working station, so that the detection body 2 disengages from the recovery chamber 19 from the disengagement port 23.

[0118] As Figure 1 shown, the X-ray fluorescence analysis system provided in this embodiment, the analysis component includes an X-ray generating unit 35 and a detector unit 36. The X-ray generating unit 35 is arranged in the shielding chamber 1. The X-ray generating unit 35 emits X-rays to excite the sample to be measured in the sample bottle 3 to generate characteristic energy X-ray fluorescence. The detector unit 36 is arranged in the shielding chamber 1, detects the characteristic energy X-ray fluorescence, and transmits the detection signal to the control member 8. The X-ray generating unit 35 and the detector unit 36 are only schematically shown in the figure. After the position state of the sample bottle 3 is correct, automatic measurement starts. The X-ray generating unit 35 emits X-rays to excite the sample to be measured in the sample bottle 3 to generate characteristic energy X-ray fluorescence. The detector unit 36 performs detection. The signal generated by the detector unit 36 is processed to generate energy spectrum data, and the energy spectrum data can be directly obtained on the control member for analysis and calculation.

[0119] In a specific implementation manner of the analysis component, the X-ray generating unit 35 includes a high-voltage generator and an X-ray tube. The high-voltage generator provides a DC voltage and a filament heating voltage for the X-ray tube. The X-ray tube is used to emit electrons toward the target in the X-ray tube, so that the target emits primary X-rays in response to the incident electrons. The target in this embodiment uses a tungsten (W) target or a molybdenum (Mo) target. The detector unit 36 includes an SDD detector and a graphite bent crystal diffractor. The SDD detector is used to detect and receive the characteristic X-rays of different radioactive elements. The graphite bent crystal diffractor is used to improve the diffraction effect and focusing property of the characteristic light source, reduce the detection limit of radioactive elements, and improve the measurement accuracy.

[0120] Obviously, the above embodiments are only examples for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. An X-ray fluorescence analysis system, characterized in that: include: Shielded room (1); A test body (2) is arranged in the shielding chamber (1), the test body (2) has a receiving cavity (4) for receiving a sample bottle (3), a liquid leakage detection element (6) is arranged at the bottom of the receiving cavity (4), and an analysis perspective window (5) is provided on the test body (2); An analysis component is arranged in the shielding chamber (1), and the analysis component analyzes and measures the sample to be analyzed in the sample bottle (3) through the analysis perspective window (5); A pneumatic transmission component (7) is connected to the accommodating chamber (4), the pneumatic transmission component (7) is used to send the sample bottle (3) into or out of the accommodating chamber (4), the pneumatic transmission component (7) comprises a valve body (9), and the valve body (9) is used to connect or cut off the atmosphere in the pneumatic transmission component (7); A control component (8) electrically connected to the analysis component, the liquid leakage detection component (6) and the pneumatic transmission component (7) respectively; Also includes: A recovery component (17) is arranged outside the shielding room (1) to recover the test object (2); The recovery component (17) comprises: The recovery chamber (19) has an installation cavity (20), a recovery body (21) is arranged in the installation cavity (20), the recovery body (21) forms the recovery cavity (18), and the installation cavity (20) has a receiving port (22) and a disengagement port (23); a movable body (24) disposed in the installation cavity (20), the movable body (24) having a channel (25), the movable body (24) having a first station for connecting the recovery cavity (18) and the receiving port (22) through the channel (25), a second station for connecting the recovery cavity (18) and the escape port (23) through the channel (25), and a third station for sealing the recovery cavity (18); A recovery drive member (26) is connected to the movable body (24) to drive the movable body (24) to move or rotate to each workstation.

2. The X-ray fluorescence analysis system according to claim 1, characterized in that: The accommodating chamber (4) has a sample delivery port (10) and an air delivery port (11), and the sample bottle (3) that has been transferred to the position is located between the sample delivery port (10) and the air delivery port (11); The pneumatic transmission component (7) comprises a sample delivery tube (12) and an air delivery tube (13); the sample delivery tube (12) is in communication with the sample delivery port (10); the air delivery tube (13) is in communication with the air delivery port (11); and the air delivery tube (13) is used to be in communication with an air source device.

3. The X-ray fluorescence analysis system according to claim 2, characterized in that: The sample delivery tube (12) and the air delivery tube (13) are respectively in contact with the detection body (2), and a sealing member (14) is provided at the contact point.

4. The X-ray fluorescence analysis system according to claim 1, characterized in that: The bottom of the detection body (2) is provided with an overflow groove (15) which is in communication with the accommodating cavity (4).

5. The X-ray fluorescence analysis system according to claim 1, characterized in that: A carrier (16) for positioning the sample bottle (3) is provided in the accommodating cavity (4).

6. The X-ray fluorescence analysis system according to claim 1, characterized in that: Also includes: A locking component (27) is arranged on the shielding chamber (1), wherein the locking component (27) has a locking end (28), and the locking end (28) is used to lock and unlock the detection body (2).

7. The X-ray fluorescence analysis system according to any one of claims 1 to 6, characterized in that: Also includes: A clamping assembly (29) is arranged in the shielding chamber (1), the clamping assembly (29) having a clamping end (30), the detection body (2) having a clamping window (31), and the clamping end (30) is suitable for clamping the sample bottle (3) through the clamping window (31).

8. The X-ray fluorescence analysis system according to claim 7, characterized in that: A closed cavity (32) communicating with the accommodating cavity (4) is provided between the clamping assembly (29) and the clamping window (31).

9. The X-ray fluorescence analysis system according to any one of claims 1 to 6, characterized in that: Also includes: A position detection component (33) is arranged in the shielding room (1); a detection perspective window (34) is provided on the detection body (2); and the position detection component (33) is suitable for detecting the sample bottle (3) through the detection perspective window (34).

10. The X-ray fluorescence analysis system according to any one of claims 1 to 6, characterized in that: The analysis components include: An X-ray generating unit (35) is arranged in the shielding room (1), and the X-ray generating unit (35) emits X-rays to excite the sample to be tested in the sample bottle (3) to generate X-ray fluorescence of characteristic energy; A detector unit (36) is arranged in the shielding room (1), detects the characteristic energy X-ray fluorescence, and transmits the detection signal to the control unit (8).

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