A high-sealing shielding automatic sampling system for surface chemical form analysis test of radioactive sample

Abstract

This invention provides a highly sealed, shielded, automated sample introduction system for analyzing the surface chemical morphology of radioactive samples, relating to the field of radiation shielding technology. It solves the technical problem that existing shielding devices cannot provide comprehensive protection throughout the entire process of radioactive sample transport, introduction, and detection. The invention includes a first shielding enclosure and a second shielding enclosure. The first shielding enclosure is equipped with an auxiliary transport system and a control system. The control system includes a pretreatment control system and a detection control system. The auxiliary transport system includes a shielded transport system for transporting samples to the first shielding enclosure and an auxiliary transport system for feeding and removing samples from the pretreatment enclosure. This invention effectively shields radiation while facilitating operation. Furthermore, due to its superior sealing, it reduces interference from external environmental factors during detection, thus improving the accuracy and stability of the detection.

Description

Technical Field

[0001] This invention relates to the field of radiation shielding technology, and more specifically, to a highly sealed shielded automated sample introduction system for analyzing the chemical morphology of radioactive sample surfaces. Background Technology

[0002] As advanced pressurized water reactors (PWRs) face increasingly stringent safety requirements, the impact of in-reactor irradiated water chemistry on critical structural materials, particularly the adverse effects on the integrity of zirconium alloy cladding, is receiving growing attention. The environment in which zirconium alloy cladding operates within the reactor is extremely harsh. It must withstand not only the effects of high temperature, high pressure, and complex water chemistry, but also the influence of α, β, γ radiation and neutron irradiation. Under these conditions, the microstructure and chemical morphology of the zirconium alloy cladding material change, leading to decreased corrosion resistance, accelerated corrosion, and ultimately, material failure. Therefore, research on the corrosion performance of zirconium alloy cladding materials in the harsh environment of nuclear reactors, especially the impact of in-reactor irradiated water chemistry on the surface chemical morphology of zirconium alloy materials, is of great significance for avoiding or slowing down the corrosion rate of zirconium alloy cladding materials and ensuring reactor safety.

[0003] Current research on the effects of irradiated hydrochemical environments on the surface chemical morphology of zirconium alloys mainly utilizes simulated in-reactor irradiation with heavy ion or gamma irradiation. However, the effects of actual in-reactor irradiation and hydrochemical environments on material corrosion are far more complex than those of single irradiation conditions. Therefore, research on the effects of in-reactor irradiated hydrochemical environments on the surface chemical morphology of zirconium alloys is essential for studying the corrosion performance of zirconium alloys in the harsh environment of nuclear reactors. Because corrosion samples after in-reactor irradiation are highly radioactive, specific shielding modifications to the surface chemical morphology analysis equipment are necessary to ensure the safety of analysts and the environment. Furthermore, a matching analytical method must be established based on the modified system structure to obtain accurate and stable experimental data. Therefore, based on the structural characteristics of the existing material surface chemical morphology analysis equipment—X-ray photoelectron spectrometer (hereinafter referred to as XPS)—and the requirements for radioactive sample analysis, it is necessary to design and manufacture a highly sealed and shielded automated sample introduction system for radioactive sample surface chemical morphology analysis experiments, and establish supporting analytical methods, so as to effectively complete the XPS surface chemical morphology analysis experiments on radioactive samples irradiated under the in-pile water chemical environment, obtain data on the corrosion behavior of zirconium alloy cladding materials under in-pile service conditions of high temperature, high pressure and strong radiation field, and ensure the safety of personnel and environment during the experiment.

[0004] Existing shielding devices, such as the X-ray radiation shielding building proposed in patent CN105604353A, effectively reduce X-ray energy through multiple shielding corners in pedestrian passages, and then use lead doors to attenuate the radiation energy to the required standard. Lead doors are strong, easy to open, and do not require frequent opening of the shielding doors, saving time and effort. Multiple lead doors and shielding corners work together to achieve a good shielding effect. However, this method is mainly designed for X-ray flaw detection equipment used internally to prevent its radiation from leaking outwards; the radiation source is relatively weak and fixed.

[0005] Another example is the radiation-shielded transport system proposed in patent CN116798672A, which better avoids human intervention during transport and improves safety. However, for the analysis of radioactive materials, they still need to be removed from the shielded box and exposed, which still poses a risk of radiation leakage. Currently, there is no protective shielded sample introduction device for the detection of radioactive samples. Summary of the Invention

[0006] This invention provides a highly sealed and shielded automated sample introduction system for analyzing the surface chemical morphology of radioactive samples, thereby solving the technical problem that existing shielding devices cannot provide protection for the entire process of radioactive sample transport, introduction, and testing.

[0007] The embodiments of the present invention are achieved through the following technical solutions:

[0008] A highly sealed shielded automated sample introduction system for analyzing the surface chemical morphology of radioactive samples includes a first shielding box for shielding radiation during sample transport and detection, and a second shielding box located outside the first shielding box for shielding radiation during sample detection. The first shielding box is equipped with an auxiliary transport system for transporting samples and a control system for controlling sample loading and detection outside the second shielding box.

[0009] The control system includes a pretreatment control system for pre-processing samples and a detection control system for controlling the detection system to detect the samples.

[0010] The auxiliary transport system includes a shielded transport system for transporting samples to the first shielded enclosure and an auxiliary transport system for sending samples into and out of the pretreatment area.

[0011] Preferably, the shielded transport system includes a shielded transport container for storing samples and shielding them from radiation, and a transport trolley for carrying and transporting the shielded transport container; the shielded transport container is provided with an inner shielding mechanism, an outer shielding mechanism, and a sample basket; the transport trolley is provided with a lifting device for sending the shielded transport container into the first shielding box.

[0012] Preferably, the control system further includes a transfer control system for transferring and removing the sample basket. The transfer control system and the pretreatment control system include a glove operation hole and an observation window located on the first shielded box and the second shielded box, respectively. The glove operation hole is equipped with a shielded glove.

[0013] Preferably, the second shielding enclosure includes a detection system for detecting samples, a circulation purification system for controlling the dissolved oxygen content of water in the air inside the first shielding enclosure, and an intake and exhaust air filtration system for maintaining negative pressure in the first shielding enclosure and filtering solid particles.

[0014] Preferably, the air intake and exhaust filtration system includes an exhaust valve and an intake valve; the exhaust valve and the intake valve are respectively connected to the first shielded box, and it is also provided with an intake and exhaust dry pump for providing negative pressure, a filter for filtering solid particles and a special exhaust duct.

[0015] Preferably, the auxiliary transfer system includes a transfer track for feeding and discharging samples into and out of the sample handling stage and a lifting device for lifting samples onto the transfer track, the transfer track being connected to the detection system.

[0016] Preferably, the detection system is provided with an instrument inlet for receiving pretreated samples.

[0017] Preferably, it also includes a monitoring system for detecting sample transport and sample preparation, the monitoring system including a camera installed inside the first shielded box.

[0018] A method for using a highly sealed, shielded automated sample introduction system for analyzing the surface chemical speciation of radioactive samples includes the following steps:

[0019] S1: Place the sample in the sample basket of the shielded transport container and transfer it to the first shielded box via a transport trolley;

[0020] S2: Transport the sample basket to the sample handling table for sample pretreatment;

[0021] S3: The pretreated sample is sent into the instrument's inlet via the transfer track and then detected by the detection system.

[0022] Preferably, the device further includes a lifting device and a hoisting device. In step S1, after the shielding transfer container is lifted into the first shielding box by the lifting device, the shielding transfer container is then transferred by the hoisting device, and the sample basket in the shielding transfer container is removed through the glove operating hole. Preferably, in step S1, after the shielding transfer container is lifted by the lifting device and then into the first shielding box, the shielding transfer container is then transferred by the hoisting device, and the sample basket in the shielding transfer container is removed through the glove operating hole.

[0023] This technical solution, by setting up a first and second shielding enclosure, effectively isolates radiation from radioactive samples during transport and testing, protecting operators from radiation damage. The entire system employs a high-sealing design to prevent radioactive material leakage into the environment. The combination of the auxiliary transport and control system automates the entire process from sample storage and transportation to pretreatment and testing, reducing manual intervention and improving work efficiency. Features such as glove operation holes and observation windows allow operators to process and test samples in a safe environment without direct contact with radioactive materials. The circulating purification system and air intake / exhaust filtration system ensure the cleanliness of the testing environment, reducing the impact of external factors on test results. Maintaining negative pressure and controlling dissolved oxygen levels help provide a stable and suitable environment for testing, thus ensuring data consistency and accuracy. The design of the shielded transport container and the use of the transport trolley simplify the sample transfer process and reduce the risk of sample damage. The system integrates multiple functional modules such as sample pretreatment, transfer, and testing, making the entire analysis process smoother and more efficient. The camera allows operators to monitor sample transport and preparation in real time, facilitating timely detection and resolution of problems.

[0024] This system can effectively complete the shielded transport, automated transfer, assisted sample introduction, and treatment of radioactive zirconium alloy samples for XPS analysis equipment, providing a guarantee for the safe and stable study of the influence of in-pile irradiated water chemical environment on the surface chemical morphology of zirconium alloy materials.

[0025] This system effectively shields samples from radiation during the testing process, while reducing environmental interference with sample preparation and testing. Furthermore, it ensures the cleanliness of the testing environment through an intake and exhaust air filtration system and a circulating purification system, guaranteeing consistency in the testing environment for each batch of tests, which helps improve the accuracy and stability of the tests.

[0026] The technical solutions of the embodiments of the present invention have at least the following advantages and beneficial effects:

[0027] 1. This invention effectively isolates radioactive samples from radiation during transport and testing, protecting operators from radiation damage;

[0028] 2. The present invention uses a double-layer enclosure for isolation. The first shielding enclosure shields the radiation during sample preparation and transfer, while the second shielding enclosure is equipped with functional systems that have material interaction with the first shielding enclosure. In addition to further strengthening the first shielding enclosure, the second shielding enclosure also has a buffering and shielding effect on the materials that may be exchanged between these functional systems.

[0029] 3. This invention effectively shields radiation while facilitating operation. Furthermore, due to its superior sealing, it reduces interference from external environmental factors during the testing process, thereby improving the accuracy and stability of the test. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the system structure of the highly sealed shielded automated sample introduction system for analyzing the surface chemical morphology of radioactive samples provided in Embodiment 1 of the present invention;

[0032] Figure 2 This is a top-view cross-sectional view of the highly sealed shielded automated sample introduction system for analyzing the surface chemical morphology of radioactive samples provided in Embodiment 1 of the present invention.

[0033] Figure 3 This is a front view of the first shielding box of the high-sealing shielded automated sample introduction system for analyzing the surface chemical morphology of radioactive samples provided in Embodiment 1 of the present invention.

[0034] Figure 4 This is a three-dimensional structural schematic diagram of the highly sealed shielded automated sample introduction system for analyzing the surface chemical morphology of radioactive samples provided in Embodiment 1 of the present invention.

[0035] Figure 5 This is a schematic diagram of the auxiliary transport system structure of the high-sealed shielded automated sample introduction system for analyzing the surface chemical morphology of radioactive samples provided in Embodiment 2 of the present invention.

[0036] Figure 6 This is a schematic diagram of the shielded transport container of the high-sealing shielded automated sample introduction system for analyzing the surface chemical morphology of radioactive samples, provided in Embodiment 3 of the present invention.

[0037] Figure 7This is a schematic diagram of the transport cart of the high-sealing shielded automated sample introduction system for analyzing the surface chemical morphology of radioactive samples provided in Embodiment 3 of the present invention;

[0038] Figure 8 The image shows the chemical spectra of the sample surface in the high-sealed shielded automated sample introduction system for analyzing the surface chemical spectra of radioactive samples, as provided in Embodiment 1 of the present invention.

[0039] Icons: 1. First shielding enclosure; 2. Second shielding enclosure; 3. Detection and control system; 4. Transfer trolley; 41. Lifting device; 5. Shielded transfer container; 51. Inner shielding mechanism; 52. Outer shielding mechanism; 6. Sample basket; 7. Lifting device; 8. Transfer track; 9. Sample operating table; 10. Camera; 12. Glove operating hole; 13. Instrument sample inlet; 14. Detection system; 15. Circulation and purification system; 16. Inlet and outlet dry pumps; 17. Exhaust valve; 18. Filter; 19. Special exhaust duct; 20. Inlet valve; 21. Observation window. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0042] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0043] In the description of this invention, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0044] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0045] Example 1

[0046] A highly sealed shielded automated sample loading system for analyzing the surface chemical morphology of radioactive samples includes a first shielding box 1 for shielding radiation during sample transport and detection, and a second shielding box 2 located outside the first shielding box 1 for shielding radiation during sample detection. The first shielding box 1 is equipped with an auxiliary transport system for transporting samples and a control system for controlling sample loading and detection outside the second shielding box 2.

[0047] The control system includes a pretreatment control system for pre-processing samples and a detection control system 3 for controlling the detection system 14 to detect the samples.

[0048] The auxiliary transport system includes a shielded transport system for transporting samples to the first shielded enclosure 1 and an auxiliary transport system for sending samples into and out of the pretreatment area.

[0049] In this embodiment, the second shielding box 2 includes a detection system 14 for detecting samples, a circulation purification system 15 for controlling the dissolved oxygen content of water in the air inside the first shielding box 1, and an intake and exhaust air filtration system for maintaining negative pressure in the first shielding box 1 and filtering solid particles.

[0050] In this embodiment, the detection system 14 is an XPS analysis device.

[0051] In this embodiment, the first shielding enclosure 1 has internal dimensions of 1150×650×1000 (mm), and is lined with 3mm thick 304 stainless steel plate welded by argon arc welding. It is integrally embedded within the second shielding enclosure 2. A sealed double-cover interface for docking with the transfer trolley 4 is provided at the bottom. A sealed docking hatch is provided at the rear, docking with the sample injection pause compartment of the equipment (XPS). Two sets of single-station glove operation holes 12 are provided at corresponding positions on the front. The glove operation holes 12 are sealed with O-rings to ensure that the first shielding enclosure 1 achieves a nuclear level II seal (leakage rate ≤2.5×10⁻⁶ according to EJ / T 1096-1999 standard). -3 / h); The front sealing cover of the 12 glove operation holes is made of 110mm thick carbon steel, and the gloves used are nuclear industry γ-ray special neoprene rubber lead-containing shielding gloves.

[0052] In this embodiment, the second shielding enclosure 2 is integrally welded from 110mm thick carbon steel plates, achieving radioactive shielding against alpha rays and small amounts of beta and gamma rays. The observation window 21 is sealed with an O-ring, the inspection door is sealed with a sealing strip, and the through hole is sealed with a KF40 flange welded and an O-ring. The overall sealing performance reaches nuclear level III sealing (according to EJ / T 1096-1999 standard, leakage rate ≤1×10⁻⁶). -2 / h).

[0053] In this embodiment, the air intake and exhaust filtration system includes an exhaust valve 17 and an intake valve 20 that are respectively connected to the first shielded box 1. The exhaust valve 17 and the intake valve 20 are also provided with an inlet and outlet dry pump 16 for providing negative pressure, a filter 18 for filtering solid particles, and a special exhaust duct 19.

[0054] In this embodiment, the detection system 14 is provided with an instrument inlet 13 for receiving pre-treated samples.

[0055] In this embodiment, a monitoring system for detecting sample transport and preparation is also included, the monitoring system including a camera 10 installed inside the first shielded enclosure 1.

[0056] A method for using a highly sealed, shielded automated sample introduction system for analyzing the surface chemical speciation of radioactive samples includes the following steps:

[0057] S1: Place the sample in the sample basket 6 of the shielded transport container 5 and transfer it to the first shielded box 1 via the transport trolley 4;

[0058] S2: Transport the sample basket 6 to the sample operation table 9 for sample pretreatment;

[0059] S3: The pretreated sample is sent into the instrument inlet 13 via the transfer track 8 and detected by the detection system 14.

[0060] In this embodiment, in step S1, after the shielding transfer container 5 is lifted by the lifting device 41 and then lifted into the first shielding box 1 by the lifting device 41, the shielding transfer container 5 is transferred by the lifting device 7, and the sample basket 6 in the shielding transfer container 5 is taken out through the glove operation hole 12.

[0061] The specific operating procedure is as follows: Analysts automatically push the automated transport trolley 4 from the hot chamber to the test site, manually operate the trolley to locate its position, and automatically open the top plate after confirming its docking position with the first shielding box 1. The lifting device 41 then presses and seals the shielded transport container 5 against the bottom of the first shielding box 1 through the docking hole. Subsequently, the automatic lifting device 7 inside the first shielding box 1 lifts the sealed cover of the shielded transport container and transfers it to the designated position. Finally, the lifting device pushes the sample basket 6 containing the radioactive corrosion sample into the first shielding box 1. The operating control system then manipulates the lifting device 7 to clamp the fixed basket 6 inside the first shielding box 1 and transfers it via the transport rail 8 to the sample operating table 9 inside the first shielding box 1. The operator removes the sample from the sample basket 6 on the sample operating table 9 through the glove operating hole 12 and performs pre-analytical pretreatment. After pretreatment, the sample is fixed in the XPS sample tray for later use. Subsequently, the instrument inlet 13 of the XPS14 analytical device, housed within the second shielded enclosure 2, is opened; the instrument inlet 13, located at the rear of the first shielded enclosure 1 and connected to the inlet door of the pause chamber, is also opened. The operator uses the glove operating hole 12 to manipulate the clamps to send the XPS sample tray through the instrument inlet 13 into the pause chamber. Finally, the pause chamber inlet door and the docking door are closed. The XPS14 automatically performs vacuuming. Once the vacuum level in the pause chamber is <1E-7 mbar, the sample tray is transferred to the internal analysis chamber of the XPS analytical device. Further analysis is prepared once the vacuum level in the analysis chamber is <5E-9 mbar. Throughout this process, both the first shielded enclosure 1 and the second shielded enclosure 2 maintain a negative pressure state. The radioactive waste gas generated during the process is filtered through a nuclear-grade filter 18 before entering the special exhaust duct 19.

[0062] After establishing the analysis method using the XPS software Avantage, the analysis program was executed to obtain the chemical morphology spectrum of the corroded zirconium alloy surface. It can be seen that the main constituent elements of the corroded zirconium alloy surface are C, O, and Zr, among which Zr mainly exists in the form of ZrO and ZrO2, with a relative content of 0.66% and 4.73%, respectively.

[0063] Working principle and usage method;

[0064] This technical solution, by setting up a first shielding box 1 and a second shielding box 2, effectively isolates radiation from radioactive samples during transport and testing, protecting operators from radiation damage. The entire system employs a high-sealing design to prevent radioactive materials from leaking into the environment. The combination of the auxiliary transport and control system automates the entire process from sample storage and transportation to pretreatment and testing, reducing manual intervention and improving work efficiency. Through features such as the glove operating port 12 and observation window 21, operators can process and test samples in a safe environment without direct contact with radioactive materials. The circulating purification system 15 and the intake and exhaust air filtration system ensure the cleanliness of the testing environment, reducing the impact of external factors on the test results. Maintaining negative pressure and controlling dissolved oxygen content in the air helps provide a stable and suitable environment for testing, thereby ensuring data consistency and accuracy. The design of the shielded transport container 5 and the use of the transport trolley 4 simplify the sample transfer process and reduce the risk of sample damage. The system integrates multiple functional modules such as sample pretreatment, transfer, and testing, making the entire analysis process smoother and more efficient. The camera 10 allows operators to monitor the sample transfer and preparation process in real time, facilitating timely detection and resolution of problems.

[0065] Example 2

[0066] The difference between this embodiment and Embodiment 1 is that, in this embodiment, the auxiliary transmission system includes a transmission track 8 for sending samples into and out of the sample operating table 9 and a lifting device 7 for lifting samples onto the transmission track 8, and the transmission track 8 is connected to the detection system 14.

[0067] Example 3

[0068] The difference between this embodiment and Embodiment 1 is that, in this embodiment, the shielded transport system includes a shielded transport container 5 for storing samples and shielding sample radiation, and a transport trolley 4 for carrying and transporting the shielded transport container 5; the shielded transport container 5 is provided with an inner shielding mechanism 51, an outer shielding mechanism 52, and a sample basket 6; the transport trolley 4 is provided with a lifting device 41 for sending the shielded transport container 5 into the first shielded box 1.

[0069] In this embodiment, the control system further includes a transfer control system for transferring and removing the sample basket 6. The transfer control system and the pretreatment control system include a glove operation hole 12, an observation window 21, and a shielding glove located at the glove operation hole 12, which overlaps with the first shielded box 1 and the second shielded box 2. The observation window 21 has a size of 700×400 (mm). The innermost layer of the glass in the observation window 21 is made of 10mm K509 glass, and the outer layer is 10mm double-layer tempered glass. A 75mm thick ZF6 lead glass is placed in the tempered glass interlayer.

[0070] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A highly sealed, shielded, automated sample introduction system for analyzing the chemical speciation of radioactive sample surfaces, characterized in that: It includes a first shielding box (1) for shielding radiation during sample transport and testing, and a second shielding box (2) located outside the first shielding box (1) for shielding radiation during sample testing. The first shielding box (1) is equipped with an auxiliary transport system for transporting samples and a control system for controlling sample loading and testing outside the second shielding box (2). The overall control system includes a pretreatment control system for pre-processing samples and a detection control system for controlling the detection system to detect the samples (3). The auxiliary transport system includes a shielded transport system for transporting samples to the first shielded box (1) and an auxiliary transport system for sending samples into and out of the pretreatment area; The shielded transport system includes a shielded transport container (5) for storing samples and shielding them from radiation, and a transport trolley (4) for carrying and transporting the shielded transport container (5); the shielded transport container (5) is provided with an inner shielding mechanism (51), an outer shielding mechanism (52), and a sample basket (6); the transport trolley (4) is provided with a lifting device (41) for sending the shielded transport container (5) into the first shielded box (1); The overall control system also includes a transfer control system for transferring and removing the sample basket (6). The transfer control system and the pretreatment control system include a glove operation hole (12) that overlaps with the first shielded box (1) and the second shielded box (2). The second shielded box (2) includes a detection system (14) for detecting the sample. The auxiliary transmission system includes a transmission track (8) for feeding and sending samples into and out of a sample operating table (9) and a lifting device (7) for lifting samples onto the transmission track (8). The transmission track (8) is connected to the detection system (14). The detection system (14) is provided with an instrument inlet (13) for receiving pre-treated samples.

2. The highly sealed shielded automated sample introduction system for analyzing the surface chemical speciation of radioactive samples according to claim 1, characterized in that: The transfer control system and the pre-processing control system also include an observation window (21), and the glove operation hole (12) is equipped with a shielded glove.

3. The highly sealed shielded automated sample introduction system for analyzing the surface chemical speciation of radioactive samples according to claim 1, characterized in that: The second shielding enclosure (2) further includes a circulating purification system (15) for controlling the dissolved oxygen content of water in the air inside the first shielding enclosure (1) and an intake and exhaust air filtration system for maintaining the negative pressure of the first shielding enclosure (1) and filtering solid particles.

4. The highly sealed shielded automated sample introduction system for analyzing the surface chemical speciation of radioactive samples according to claim 3, characterized in that: The air intake and exhaust filtration system includes an exhaust valve (17) and an intake valve (20); the exhaust valve (17) and the intake valve (20) are respectively connected to the first shielded box (1), and it is also provided with an inlet and outlet dry pump (16) for providing negative pressure, a filter (18) for filtering solid particles and a special exhaust duct (19).

5. The highly sealed shielded automated sample introduction system for analyzing the surface chemical speciation of radioactive samples according to claim 1, characterized in that: It also includes a monitoring system for detecting sample transport and sample preparation, the monitoring system including a camera (10) installed inside the first shielded enclosure (1).

6. A method of using the highly sealed shielded automated sample introduction system for analyzing the surface chemical speciation of radioactive samples according to any one of claims 1 to 5, characterized in that: Includes the following steps: S1: The sample is placed in the sample basket (6) of the shielded transport container (5) and transferred to the first shielded box (1) by the transport trolley (4). S2: Transport the sample basket (6) to the sample operation table (9) for sample pretreatment; S3: The pretreated sample is sent into the instrument inlet (13) through the transfer track (8) and detected by the detection system (14).

7. The method of using the high-sealed shielded automated sample introduction system for analyzing the surface chemical speciation of radioactive samples according to claim 6, characterized in that: It also includes a lifting device (41) and a lifting device (7). In step S1, the shielding transfer container (5) is lifted into the first shielding box (1) by the lifting device (41), and then the shielding transfer container (5) is transferred by the lifting device (7). The sample basket (6) in the shielding transfer container (5) is taken out through the glove operation hole (12).

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