A device for detecting the enrichment of neptunium in seawater

Abstract

The application discloses a kind of enrichment detection devices of radioactive neptunium in seawater, specifically related to radionuclide detection equipment field, including sealed tube, the upper portion of the sealed tube is provided with enrichment device, the upper end of the enrichment device is provided with filter device, the outer surface of the filter device is provided with collection device on one side, the outer surface of the sealed tube is provided with sealing door on one side of middle part, the outer surface of the sealed tube is provided with detection component on the other side of middle part, the lower end of the sealed tube is provided with drain pipe in middle part, the inner cavity of the sealed tube is provided with guiding device in lower part.The enrichment detection device of radioactive neptunium in seawater, enrichment device is through multiple enrichment columns parallel operation to expand enrichment contact area, guiding device is through the fan-shaped collection plate loaded with enrichment material to carry out secondary interception, significantly improve the enrichment multiple of radioactive neptunium, ensure the effective capture of ultra trace neptunium in seawater, meet the sensitivity requirement of subsequent detection.

Description

Technical Field

[0001] This invention relates to the field of radionuclide detection equipment, and in particular to a device for detecting the enrichment of radionuclide in seawater. Background Technology

[0002] With the widespread use of nuclear energy, scenarios such as nuclear power plant operation, nuclear fuel processing, and nuclear accidents may lead to the release of radioactive materials into the marine environment. Among them, radioactive neptunium, as a long half-life and highly toxic artificial radionuclide, has a concentration level in seawater that directly affects marine ecological safety and human health. Therefore, the accurate enrichment and detection of trace amounts of radioactive neptunium in seawater is a key link in marine environmental radiation monitoring, safety assessment of the waters surrounding nuclear facilities, and emergency response to nuclear accidents.

[0003] Chinese Patent Publication No. CN109239760A discloses a device for on-site enrichment and detection of radionuclides in seawater, comprising a pumping section, an enrichment device section, and a detection device section connected in sequence. The enrichment device includes a shielding layer, an inner tank, an impurity filtration layer, and a nuclide enrichment layer. The inner tank is covered by the shielding layer. The water to be tested is pumped into the inner tank, passes through the impurity filtration layer installed in the inner tank, and undergoes nuclide enrichment in the nuclide enrichment layer. After the enrichment device is saturated, the water in the inner tank is drained, and then the nuclide is detected by the detection device. By adopting a method of enrichment followed by detection, both enrichment and detection are performed in a shielded environment, effectively reducing background interference and lowering the detection limit of the device. Furthermore, the enrichment device and detection device are organically combined and uniformly controlled by a control unit, eliminating the need for manual intervention and effectively improving the detection speed. However, in actual use, the concentration of radionuclide in seawater is extremely low (mostly 10^-14). (at the mol / L level), existing devices mostly adopt a single-stage enrichment structure, which limits the contact area between the enriched material and seawater, and makes it difficult to control the seawater flow rate, resulting in low enrichment recovery rate and insufficient enrichment factor of neptunium, making it difficult to meet the sensitivity requirements of subsequent detection. Some multi-stage enrichment devices have problems such as complex power transmission and high energy consumption, and are prone to enrichment dead zones caused by seawater deviation. Summary of the Invention

[0004] The main objective of this invention is to provide a device for the enrichment and detection of radioactive neptunium in seawater. This device can effectively solve the problems of existing devices, which mostly adopt a single-stage enrichment structure, have a limited contact area between the enrichment material and seawater, and have difficulty in controlling the seawater flow rate, resulting in low neptunium enrichment recovery rate and insufficient enrichment factor, making it difficult to meet the sensitivity requirements of subsequent detection.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] An enrichment and detection device for radioactive neptunium in seawater includes a sealed cylinder. An enrichment device is disposed at the upper part of the sealed cylinder, and a filter device is disposed at the upper end of the enrichment device. A collection device is disposed on one side of the outer surface of the filter device, and a water inlet pipe is disposed on the other side of the outer surface of the filter device. A sealing door is disposed on one side of the middle of the outer surface of the sealed cylinder, and a detection component is disposed on the other side of the middle of the outer surface of the sealed cylinder. A drain pipe is disposed at the middle of the lower end of the sealed cylinder, and a guide device is disposed at the lower part of the inner cavity of the sealed cylinder.

[0007] Preferably, the filtration device includes an installation cylinder, a filter element is disposed in the middle of the inner cavity of the installation cylinder, a transmission handle is disposed in the middle of the inner cavity of the filter element, the lower end of the transmission handle extends to the lower part of the inner cavity of the sealing cylinder, the upper end of the transmission handle extends to the outside of the installation cylinder, a motor is disposed at the upper end of the installation cylinder, the output end of the motor is fixedly connected to the upper end of the transmission handle, and a cleaning mechanism is disposed on the upper part of the outer surface of the transmission handle, the cleaning mechanism being adapted to the filter element for use;

[0008] The filter element includes a filter ring, and a filter frame is provided on the inner outer surface of the filter ring. The filter frame is composed of filter cylinders of different sizes.

[0009] Preferably, the cleaning mechanism includes three trapezoidal rods, all three of which are fixedly installed on the upper part of the outer surface of the transmission handle. The three trapezoidal rods are stepped in shape and are adapted to the filter element. A fixing plate is provided on the upper part of the outer surface of the three trapezoidal rods, and a cleaning element is provided on the lower part of the outer surface of the three trapezoidal rods.

[0010] Preferably, the collecting device includes a mounting frame, which is fixedly mounted on one side of the outer surface of the mounting cylinder. A collecting frame is provided on the side of the inner cavity of the mounting frame away from the filter element. A plurality of arc-shaped guide plates are provided on one side of the inner cavity of the mounting frame, and a limiting member is provided on the other side of the inner cavity of the mounting frame.

[0011] Preferably, the limiting component includes a filter arc plate, which is fixedly installed on the inner cavity surface of the mounting frame, and a plurality of arc-shaped guide plates are evenly arranged on the outer surface of the filter arc plate near the collecting frame.

[0012] Preferably, the enrichment device includes a rotating plate, which is fixedly installed on the upper end of the sealing cylinder. The upper end of the rotating plate is fixedly connected to the lower end of the mounting cylinder. A fixing disk is provided above the rotating plate and is fixedly installed on the lower part of the inner cavity surface of the mounting cylinder. The upper end of the fixing disk is fixedly connected to the lower end of the filter ring. Multiple guide rings are provided in the middle of the rotating plate, and multiple collecting components are provided in the middle of the rotating plate. Each collecting component corresponds to one of the multiple guide rings. A pushing mechanism is provided in the middle of the inner cavity of each collecting component, and the upper end of each pushing mechanism extends to the outside of the collecting component. A transmission component is provided in the middle of the upper end of the fixing disk. The transmission component is used to transmit the kinetic energy of the transmission handle to the multiple pushing mechanisms.

[0013] The collecting component includes a second fixing plate, which is fixedly installed on the upper end of the rotating plate, and an enrichment column is threadedly installed on the lower end of the second fixing plate.

[0014] Preferably, the pushing mechanism includes a fixed handle, which is fixedly installed at the lower end of the fixed plate two. A transmission rod is rotatably installed in the middle of the fixed handle. The lower part of the outer surface of the transmission rod is rotatably connected to the lower part of the outer surface of the enrichment column. Multiple pushing elements one are provided in the middle and lower parts of the outer surface of the transmission rod, and a pushing element two is provided in the upper part of the outer surface of the transmission rod.

[0015] Preferably, the first pusher includes a fixed cylinder, which is fixedly installed on the outer surface of the transmission rod. The outer surface of the fixed cylinder is provided with three push plates, and an arc-shaped guide plate is provided between each of the three push plates.

[0016] The structure of the second pusher is similar to that of the first pusher, but the difference between the second pusher and the first pusher is that the second pusher does not have the first arc-shaped guide plate.

[0017] Preferably, the guiding device includes a mounting plate, which is fixedly installed in the lower part of the inner cavity of the sealing cylinder. The upper middle part of the mounting plate is rotatably connected to the lower end of the transmission handle. A guide member is fixedly installed on the outer surface of the transmission handle above the transmission handle. Multiple fan-shaped collecting plates are arranged in an array on the outer side of the middle part of the mounting plate.

[0018] Preferably, the guide includes a fixing ring, which is fixedly installed on the outer surface of the transmission handle. The outer surface of the fixing ring is provided with a plurality of guide blades, and one side of the outer surface of the plurality of guide blades is provided with a plurality of fan-shaped plates. The lower end of the plurality of fan-shaped plates is provided with a plurality of arc-shaped guide plates.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] In this invention, the filter element is nested with multiple filter cylinders of different diameters to form a gradient filtration structure, which significantly increases the filtration surface area, reduces the filtration load per unit area, effectively improves the seawater filtration efficiency and the device's processing capacity, and at the same time achieves graded interception of suspended particulate matter, preventing impurities from entering the enrichment device and affecting the enrichment effect, thus ensuring the accuracy of subsequent detection.

[0021] In this invention, a cleaning mechanism combining seawater kinetic energy self-drive and motor-assisted drive is used. When the seawater flows, it can directly drive the cleaning mechanism to clean the surface of the filter element in real time. After the water supply stops, the motor drive completes a comprehensive deep cleaning, which fundamentally solves the problem of filter hole blockage, ensures the continuous and stable operation of the filtration system, and reduces the frequency of downtime maintenance.

[0022] In this invention, the enrichment device expands the enrichment contact area by having multiple enrichment columns work in parallel, and the guiding device performs secondary interception through a fan-shaped collection plate loaded with enrichment material, significantly improving the enrichment factor of radioactive neptunium, ensuring the effective capture of trace neptunium in seawater, and meeting the sensitivity requirements of subsequent detection.

[0023] In this invention, the kinetic energy of a single power source is synchronously transmitted to multiple driving mechanisms through the linkage design of the transmission handle and transmission components. The rotation of the driving plate of the driving mechanism generates centrifugal force, which can accurately guide seawater to the enrichment column wall, increasing the contact area between seawater and enrichment material. At the same time, the arc-shaped guide plate can drive seawater to form a circulating flow, shorten the enrichment equilibrium time, and further improve enrichment efficiency and recovery rate. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0025] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0026] Figure 3 This is a cross-sectional view of the overall structure of the present invention;

[0027] Figure 4 This is a schematic diagram of the filtration device structure of the present invention;

[0028] Figure 5 This is a schematic diagram of the filter element structure of the present invention;

[0029] Figure 6 This is a schematic diagram of the cleaning mechanism structure of the present invention;

[0030] Figure 7 This is a schematic diagram of the collection device structure of the present invention;

[0031] Figure 8 This is a schematic diagram of the limiting component structure of the present invention;

[0032] Figure 9 This is a schematic diagram of the enrichment device structure of the present invention. Figure 1 ;

[0033] Figure 10 This is a schematic diagram of the enrichment device structure of the present invention. Figure 2 ;

[0034] Figure 11 This is a schematic diagram of the collection component structure of the present invention;

[0035] Figure 12 This is a schematic diagram of the actuation mechanism of the present invention;

[0036] Figure 13 This is a schematic diagram of the structure of the pusher component of the present invention;

[0037] Figure 14 This is a schematic diagram of the guiding device structure of the present invention;

[0038] Figure 15 This is a schematic diagram of the guide component structure of the present invention.

[0039] In the diagram: 1. Sealing cylinder; 2. Filter device; 21. Mounting cylinder; 22. Filter element; 221. Filter ring; 222. Filter frame; 23. Cleaning mechanism; 231. Trapezoidal rod; 232. Cleaning component; 233. Fixing plate one; 24. Motor; 25. Transmission handle; 3. Collection device; 31. Mounting frame; 32. Collection frame; 33. Arc-shaped guide plate one; 34. Limiting component; 341. Filter arc plate; 342. Arc-shaped guide plate two; 4. Inlet pipe; 5. Sealing door; 6. Drain pipe; 7. Detection component; 8. Enrichment device; 81. Rotary... 82. Rotating plate; 83. Fixed plate; 84. Guide ring; 85. Collecting component; 86. Fixed plate II; 87. Enrichment column; 88. Transmission component; 89. Pushing mechanism; 80. Fixed handle; 81. Transmission rod; 82. Pushing component I; 83. Fixed cylinder; 84. Arc-shaped guide plate I; 85. Pushing plate; 86. Pushing component II; 90. Guiding device; 91. Mounting plate; 92. Fan-shaped collecting plate; 93. Guide component; 931. Fixed ring; 932. Guide fan blade; 933. Fan-shaped plate; 934. Arc-shaped guide plate II. Detailed Implementation

[0040] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments. Example 1

[0041] like Figure 1 - Figure 15As shown, this embodiment discloses an enrichment detection device for radioactive neptunium in seawater, including a sealed cylinder 1. An enrichment device 8 is provided on the upper part of the sealed cylinder 1. A filter device 2 is provided on the upper end of the enrichment device 8. A collection device 3 is provided on one side of the outer surface of the filter device 2. A water inlet pipe 4 is provided on the other side of the outer surface of the filter device 2. A sealing door 5 is provided on one side of the middle of the outer surface of the sealed cylinder 1. A detection component 7 is provided on the other side of the middle of the outer surface of the sealed cylinder 1. A drain pipe 6 is provided in the middle of the lower end of the sealed cylinder 1. A guide device 9 is provided in the lower part of the inner cavity of the sealed cylinder 1.

[0042] Specifically, in the process of enriching and detecting radionuclide in seawater, seawater enters the inner cavity of the filter device 2 through the inlet pipe 4, and after being filtered by the filter device 2, it flows into the inner cavity of the enrichment device 8. After the initial enrichment and collection of radionuclide in seawater is completed by the enrichment device 8, the seawater continues to flow through the guide device 9, and the secondary enrichment and collection of radionuclide is achieved through the guide device 9. The seawater after secondary enrichment enters the lower part of the inner cavity of the sealed cylinder 1, and is finally discharged through the drain pipe 6. After the enrichment and collection of radionuclide by the enrichment device 8 and the guide device 9 is completed, the detection component 7 performs quantitative detection of the enriched radionuclide.

[0043] Furthermore, when seawater flows through the filter device 2, the filter device 2 can intercept and filter suspended particulate matter in the seawater. The intercepted suspended matter is collected by the collection device 3, so that the staff can clean and maintain the detection device in the future and ensure the long-term stable operation of the device.

[0044] Furthermore, after the detection device has been in operation for a long time, staff can open the sealed door 5 to disassemble and remove the core enrichment components in the enrichment device 8 for targeted cleaning or replacement to ensure stable enrichment efficiency.

[0045] Furthermore, the sealing cylinder 1 adopts a three-layer composite protective layer structure design, with an inner anti-corrosion lining, a middle radiation shielding layer, and an outer structural support layer, which can effectively prevent the leakage of radioactive materials and improve the device's resistance to corrosion in the marine environment.

[0046] To achieve efficient filtration of suspended solids in seawater, such as Figure 4 As shown, the filter device 2 includes an installation cylinder 21. A filter element 22 is provided in the middle of the inner cavity of the installation cylinder 21. A transmission handle 25 is provided in the middle of the inner cavity of the filter element 22. The lower end of the transmission handle 25 extends to the lower part of the inner cavity of the sealing cylinder 1, and the upper end of the transmission handle 25 extends to the outside of the installation cylinder 21. A motor 24 is provided at the upper end of the installation cylinder 21. The output end of the motor 24 is fixedly connected to the upper end of the transmission handle 25. A cleaning mechanism 23 is provided on the upper part of the outer surface of the transmission handle 25. The cleaning mechanism 23 is adapted to the filter element 22 for use.

[0047] Furthermore, such as Figure 5As shown, the filter element 22 includes a filter ring 221, and a filter frame 222 is provided on the inner and outer surfaces of the filter ring 221. The filter frame 222 is composed of filter cylinders of different sizes.

[0048] Specifically, after seawater enters the inner cavity of the installation cylinder 21 through the inlet pipe 4, it achieves graded interception of suspended solids through the gradient filtration structure of the filter element 22, preventing suspended impurities from entering the enrichment device 8 and affecting the enrichment effect. At the same time, the kinetic energy generated by the seawater flow can drive the cleaning mechanism 23 to rotate, which in turn drives the transmission handle 25 to rotate synchronously. During the rotation, the cleaning mechanism 23 cleans the filter surface of the filter element 22 in real time. When the inlet pipe 4 stops supplying water, the motor 24 starts and drives the transmission handle 25 to rotate, driving the cleaning mechanism 23 to complete the comprehensive cleaning of the filter element 22 and prevent the filter holes from becoming clogged.

[0049] Furthermore, the filter element 22 adopts a combination structure of filter ring 221 and multiple sets of filter frames 222 with different diameters, which can significantly increase the filter surface area, reduce the filtration load per unit area, thereby improving the seawater filtration efficiency and ensuring the processing capacity of the device.

[0050] To achieve efficient cleaning of the surface of filter element 22 and prevent suspended matter from clogging the filter pores, such as Figure 6 As shown, the cleaning mechanism 23 includes three trapezoidal rods 231, all of which are fixedly installed on the upper part of the outer surface of the transmission handle 25. The three trapezoidal rods 231 are stepped in shape and are adapted to the filter element 22. A fixing plate 233 is provided on the upper part of the outer surface of the three trapezoidal rods 231, and a cleaning element 232 is provided on the lower part of the outer surface of the three trapezoidal rods 231.

[0051] Specifically, after seawater enters the inner cavity of the installation cylinder 21 through the inlet pipe 4, its flowing kinetic energy can sequentially drive the three fixed plates 233 to rotate around the transmission handle 25, thereby driving the three trapezoidal rods 231 to rotate synchronously. During the rotation of the trapezoidal rods 231, the cleaning part 232 at the bottom of the rods slides relative to the filter surface of the filter element 22, thereby achieving precise cleaning of impurities in the filter holes.

[0052] To achieve centralized collection of suspended impurities in the inner cavity of the mounting cylinder 21, such as Figure 7 As shown, the collection device 3 includes a mounting frame 31, which is fixedly mounted on one side of the outer surface of the mounting cylinder 21. A collection frame 32 is provided on the side of the inner cavity of the mounting frame 31 away from the filter element 22. Multiple arc-shaped guide plates 33 are provided on one side of the inner cavity of the mounting frame 31, and a limiting member 34 is provided on the other side of the inner cavity of the mounting frame 31.

[0053] Furthermore, such as Figure 8As shown, the limiting member 34 includes a filter arc plate 341, which is fixedly installed on the inner cavity surface of the mounting frame 31. Multiple arc-shaped guide plates 342 are evenly arranged on the outer surface of the filter arc plate 341 near the collection frame 32.

[0054] Specifically, during the process of the filter element 22 filtering suspended solids and the cleaning mechanism 23 cleaning the filter element 22, suspended impurities will accumulate in the inner cavity of the mounting cylinder 21. After the seawater enters the inner cavity of the mounting cylinder 21, it forms a rotating flow field under the drive of the cleaning mechanism 23. Some of the seawater containing suspended impurities enters the inner cavity of the mounting frame 31 through the gap between multiple arc-shaped guide plates 33. The seawater entering the inner cavity of the mounting frame 31 carries suspended impurities and flows. After being intercepted by the filter arc plate 341, the suspended impurities are intercepted and fall into the collection frame 32 for centralized collection. The filtered seawater then flows back to the inner cavity of the mounting cylinder 21 through the filter arc plate 341 to avoid wasting seawater.

[0055] Furthermore, the ends of multiple arc-shaped guide plates 33 that are away from the collection frame 32 extend to the outside of the mounting frame 31 and into the inner cavity of the mounting cylinder 21, which can accurately capture the rotating water flow in the mounting cylinder 21 and achieve efficient introduction of seawater containing impurities. The multiple arc-shaped guide plates 342 are distributed in an arc-shaped array, which can guide the seawater in the inner cavity of the mounting frame 31 to the effective filtration area of ​​the filter arc plate 341, thereby improving the impurity interception efficiency. Example 2

[0056] This embodiment further improves the enrichment device 8 based on Embodiment 1. To enrich and collect radioactive neptunium from seawater, such as... Figure 9 and Figure 10 As shown, the enrichment device 8 includes a rotating plate 81, which is fixedly installed on the upper end of the sealing cylinder 1. The upper end of the rotating plate 81 is fixedly connected to the lower end of the mounting cylinder 21. A fixing disk 82 is provided above the rotating plate 81 and is fixedly installed on the lower part of the inner cavity surface of the mounting cylinder 21. The upper end of the fixing disk 82 is fixedly connected to the lower end of the filter ring 221. A plurality of guide rings 83 are provided in the middle of the rotating plate 81. A plurality of collecting elements 84 are provided in the middle of the rotating plate 81. The plurality of collecting elements 84 correspond one-to-one with the plurality of guide rings 83. A pushing mechanism 86 is provided in the middle of the inner cavity of each of the plurality of collecting elements 84. The upper ends of the plurality of pushing mechanisms 86 extend to the outside of the collecting elements 84. A transmission element 85 is provided in the middle of the upper end of the fixing disk 82. The transmission element 85 is used to transmit the kinetic energy of the transmission handle 25 to the plurality of pushing mechanisms 86.

[0057] Furthermore, such as Figure 11 As shown, the collecting component 84 includes a second fixing plate 841, which is fixedly installed on the upper end of the rotating plate 81, and an enrichment column 842 is threadedly installed on the lower end of the second fixing plate 841.

[0058] Specifically, whether the motor 24 drives the transmission handle 25 to rotate, or the cleaning mechanism 23 uses the kinetic energy of seawater flow to drive the transmission handle 25 to rotate, the rotational kinetic energy can be transmitted to multiple push mechanisms 86 through the transmission component 85, driving multiple push mechanisms 86 to operate synchronously.

[0059] Furthermore, the seawater filtered by the filter element 22 flows precisely into the inner cavity of multiple enrichment columns 842 through multiple guide rings 83. The enrichment columns 842 are filled with special enrichment materials to achieve selective enrichment of radioactive neptunium in the seawater. At the same time, during the operation of multiple propulsion mechanisms 86, the seawater entering the inner cavity of the collector 84 can be guided to the inner wall of the enrichment column 842 to increase the contact area between the seawater and the enrichment material and improve the enrichment rate.

[0060] Furthermore, the transmission component 85 is composed of multiple sets of belt drive mechanisms. The external cover of the multiple sets of belt drive mechanisms is equipped with a protective shell. The protective shell can prevent seawater from corroding the transmission components, ensure transmission stability, and at the same time prevent impurities generated during the transmission process from polluting the seawater.

[0061] Furthermore, after the detection device has been running for a period of time, when the enrichment material in the enrichment column 842 reaches saturation, the staff can open the sealing door 5 and remove the enrichment column 842 from the lower end of the fixing plate 841 through the threaded connection structure. After being taken out through the sealing door 5, it can be cleaned, regenerated or replaced. The operation is convenient and does not affect the operation of other components of the device.

[0062] To achieve precise guidance of seawater within the 842 enrichment column and improve the enrichment efficiency of radioactive neptunium, such as Figure 12 As shown, the pushing mechanism 86 includes a fixed handle 861, which is fixedly installed at the lower end of the fixed plate 841. A transmission rod 862 is rotatably installed in the middle of the fixed handle 861. The lower part of the outer surface of the transmission rod 862 is rotatably connected to the lower part of the outer surface of the enrichment column 842. Multiple pushing members 863 are provided in the middle and lower parts of the outer surface of the transmission rod 862, and a pushing member 864 is provided in the upper part of the outer surface of the transmission rod 862.

[0063] Furthermore, such as Figure 13 As shown, the pusher 863 includes a fixed cylinder 8631, which is fixedly installed on the outer surface of the transmission rod 862. Three push plates 8633 are provided on the outer surface of the fixed cylinder 8631, and an arc-shaped guide plate 8632 is provided between each of the three push plates 8633.

[0064] Furthermore, the structure of the second pusher 864 is similar to that of the first pusher 863. The difference between the second pusher 864 and the first pusher 863 is that the second pusher 864 does not have the arc-shaped guide plate 8632.

[0065] Specifically, when the transmission handle 25 drives the transmission rod 862 to rotate through the transmission component 85, the transmission rod 862 drives the three push plates 8633 to rotate synchronously through the fixed cylinder 8631. During the rotation of the push plates 8633, centrifugal force is generated, which can push the seawater in the inner cavity of the enrichment column 842 to the inner wall of the enrichment column 842, so that the seawater flows quickly through the surface of the enrichment material, shortens the enrichment equilibrium time, and improves the enrichment efficiency.

[0066] Furthermore, when the transmission rod 862 drives the pusher 863 to rotate, the arc-shaped guide plate 8632 can generate an upward guiding force on the seawater, causing the seawater in the lower part of the enrichment column 842 to circulate upward, achieving full contact between the seawater and the enrichment material, and further improving the enrichment and recovery rate of radioactive neptunium.

[0067] Furthermore, the enrichment column 842 adopts existing mature technology, and its interior is filled with selective adsorption materials (such as TEVA resin and DGA extraction chromatography materials). It achieves efficient enrichment of radioactive neptunium in seawater through the principle of selective adsorption. Its specific structure and adsorption mechanism are well known in the field and will not be described in detail in this specification.

[0068] To achieve secondary enrichment of radioactive neptunium in seawater and improve detection accuracy, such as Figure 14 As shown, the guide device 9 includes a mounting plate 91, which is fixedly installed in the lower part of the inner cavity of the sealing cylinder 1. The upper middle part of the mounting plate 91 is rotatably connected to the lower end of the transmission handle 25. A guide member 93 is fixedly installed on the outer surface of the transmission handle 25 above the transmission handle 25. Multiple fan-shaped collecting plates 92 are arranged in an array on the outer side of the middle part of the mounting plate 91.

[0069] Furthermore, such as Figure 15 As shown, the guide member 93 includes a fixing ring 931, which is fixedly installed on the outer surface of the transmission handle 25. The outer surface of the fixing ring 931 is provided with a plurality of guide fan blades 932. A plurality of fan-shaped plates 933 are provided on one side of the outer surface of the plurality of guide fan blades 932. A plurality of arc-shaped guide plates 934 are provided at the lower end of the plurality of fan-shaped plates 933.

[0070] Specifically, after the seawater is initially enriched by the collector 84, it continues to flow downward through multiple fan-shaped collector plates 92. The enrichment material loaded on the surface of the fan-shaped collector plates 92 achieves secondary enrichment of radioactive neptunium, further increasing the enrichment factor of neptunium. During this process, the drive handle 25 synchronously drives the guide 93 to rotate at high speed.

[0071] Furthermore, when the guide member 93 rotates, the guide fan blade 932 rotates and generates a downward thrust, which can accelerate the flow rate of seawater towards the mounting plate 91 and improve the contact efficiency between seawater and the fan-shaped collection plate 92. At the same time, the arc-shaped guide plate 934 has an arc-shaped structure, which can accurately guide the seawater. Since the distance between the arc-shaped guide plate 934 and the fan-shaped collection plate 92 is relatively close, and the arc width of the arc-shaped guide plate 934 is relatively narrow, it can more accurately guide the seawater to the effective enrichment area of ​​the fan-shaped collection plate 92, avoid the enrichment dead corner caused by seawater deflection, and improve the uniformity and efficiency of secondary enrichment.

[0072] It should be noted that the specific installation method, circuit layout and connection method, and control method of the detection component 7 and motor 24 used in the above embodiment are all conventional designs in the prior art, and will not be described in detail in this invention.

[0073] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the enrichment of radioactive neptunium in seawater, comprising a sealed cylinder (1), characterized in that: The upper part of the sealing cylinder (1) is provided with an enrichment device (8), the upper end of the enrichment device (8) is provided with a filter device (2), one side of the outer surface of the filter device (2) is provided with a collection device (3), the other side of the outer surface of the filter device (2) is provided with a water inlet pipe (4), one side of the middle of the outer surface of the sealing cylinder (1) is provided with a sealing door (5), the other side of the middle of the outer surface of the sealing cylinder (1) is provided with a detection component (7), the middle of the lower end of the sealing cylinder (1) is provided with a drain pipe (6), and the lower part of the inner cavity of the sealing cylinder (1) is provided with a guide device (9). The filter device (2) includes an installation cylinder (21), a filter element (22) is provided in the middle of the inner cavity of the installation cylinder (21), a transmission handle (25) is provided in the middle of the inner cavity of the filter element (22), the lower end of the transmission handle (25) extends to the lower part of the inner cavity of the sealing cylinder (1), the upper end of the transmission handle (25) extends to the outside of the installation cylinder (21), a motor (24) is provided at the upper end of the installation cylinder (21), the output end of the motor (24) is fixedly connected to the upper end of the transmission handle (25), and a cleaning mechanism (23) is provided on the upper part of the outer surface of the transmission handle (25), the cleaning mechanism (23) is adapted to the filter element (22); The filter element (22) includes a filter ring (221), and a filter frame (222) is provided on the inner and outer surfaces of the filter ring (221). The filter frame (222) is composed of filter cylinders of different sizes. The cleaning mechanism (23) includes three trapezoidal rods (231), all three trapezoidal rods (231) are fixedly installed on the upper part of the outer surface of the transmission handle (25), the three trapezoidal rods (231) are stepped in shape, and the three trapezoidal rods (231) are adapted to the filter element (22). A fixing plate (233) is provided on the upper part of the outer surface of the three trapezoidal rods (231), and a cleaning element (232) is provided on the lower part of the outer surface of the three trapezoidal rods (231). The enrichment device (8) includes a rotating plate (81), which is fixedly installed on the upper end of the sealing cylinder (1). The upper end of the rotating plate (81) is fixedly connected to the lower end of the mounting cylinder (21). A fixing disk (82) is provided above the rotating plate (81). The fixing disk (82) is fixedly installed on the lower part of the inner surface of the mounting cylinder (21). The upper end of the fixing disk (82) is fixedly connected to the lower end of the filter ring (221). A plurality of guide rings (84) are provided in the middle of the rotating plate (81). 3) The rotating plate (81) is provided with a plurality of collecting parts (84) in the middle. The plurality of collecting parts (84) correspond one-to-one with a plurality of guide rings (83). The inner cavity of each of the plurality of collecting parts (84) is provided with a pushing mechanism (86). The upper end of each of the plurality of pushing mechanisms (86) extends to the outside of the collecting parts (84). The upper end of the fixed plate (82) is provided with a transmission part (85). The transmission part (85) is used to transmit the kinetic energy of the transmission handle (25) to the plurality of pushing mechanisms (86). The collecting component (84) includes a second fixing plate (841), which is fixedly installed on the upper end of the rotating plate (81), and an enrichment column (842) is threadedly installed on the lower end of the second fixing plate (841). The pushing mechanism (86) includes a fixed handle (861), which is fixedly installed at the lower end of the fixed plate (841). A transmission rod (862) is rotatably installed in the middle of the fixed handle (861). The lower part of the outer surface of the transmission rod (862) is rotatably connected to the lower part of the outer surface of the enrichment column (842). Multiple pushers (863) are provided in the middle and lower parts of the outer surface of the transmission rod (862). A pusher (864) is provided in the upper part of the outer surface of the transmission rod (862). The first pusher (863) includes a fixed cylinder (8631), which is fixedly installed on the outer surface of the transmission rod (862). The outer surface of the fixed cylinder (8631) is provided with three push plates (8633), and an arc-shaped guide plate (8632) is provided between each of the three push plates (8633). The structure of the second pusher (864) is similar to that of the first pusher (863). The difference between the second pusher (864) and the first pusher (863) is that the second pusher (864) does not have the first arc-shaped guide plate (8632).

2. The enrichment detection device for radioactive neptunium in seawater according to claim 1, characterized in that: The collecting device (3) includes a mounting frame (31), which is fixedly installed on one side of the outer surface of the mounting cylinder (21). A collecting frame (32) is provided on the side of the inner cavity of the mounting frame (31) away from the filter element (22). Multiple arc-shaped guide plates (33) are provided on one side of the inner cavity of the mounting frame (31), and a limiting member (34) is provided on the other side of the inner cavity of the mounting frame (31).

3. The enrichment detection device for radioactive neptunium in seawater according to claim 2, characterized in that: The limiting member (34) includes a filter arc plate (341), which is fixedly installed on the inner cavity surface of the mounting frame (31). Multiple arc-shaped guide plates (342) are evenly arranged on the outer surface of the filter arc plate (341) near the collection frame (32).

4. The enrichment detection device for radioactive neptunium in seawater according to claim 1, characterized in that: The guide device (9) includes a mounting plate (91), which is fixedly installed in the lower part of the inner cavity of the sealing cylinder (1). The upper middle part of the mounting plate (91) is rotatably connected to the lower end of the transmission handle (25). A guide member (93) is fixedly installed on the outer surface of the transmission handle (25) above the transmission handle (25). Multiple fan-shaped collecting plates (92) are arranged in an array on the outer side of the middle part of the mounting plate (91).

5. The enrichment detection device for radioactive neptunium in seawater according to claim 4, characterized in that: The guide member (93) includes a fixing ring (931), which is fixedly installed on the outer surface of the transmission handle (25). The outer surface of the fixing ring (931) is provided with a plurality of guide blades (932). A plurality of fan-shaped plates (933) are provided on one side of the outer surface of the plurality of guide blades (932). A plurality of arc-shaped guide plates (934) are provided at the lower end of the plurality of fan-shaped plates (933).

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