Radioactive substance measuring device
By integrating acquisition components, turntable components, and sample components into a radioactive material measurement device, the problem of redundant multiple devices is solved, enabling efficient and integrated operation of various radioactive material measurements, and reducing costs and space requirements.
Patent Information
- Application Number
- CN202520493443.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-20
AI Technical Summary
In existing technologies, the measurement of radioactive materials requires multiple independent devices, leading to equipment redundancy, increased costs, and space occupation issues.
Design a radioactive material measurement device that integrates a collection component, a turntable component, and a sample component. By using the combination of the turntable and the probe, a variety of experiments can be integrated, including β/γ counting of nuclides, identification of radiation attenuation degree, and measurement of nuclide homogeneity.
It improved experimental efficiency, reduced laboratory costs, saved space, increased equipment utilization, and enabled the efficient completion of various experiments.
Smart Images
Figure CN223941113U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an experimental apparatus for radioactive materials, specifically a measuring device for radioactive materials. Background Technology
[0002] In the field of radiometric measurement, multiple specialized devices are typically required to meet diverse measurement needs. For example, in three key experiments—β / γ counting of nuclides, identification of nuclides by radiation attenuation, and measurement of nuclide homogeneity—the traditional approach is to configure three separate devices in a standard laboratory environment to perform their respective tasks. While this approach ensures the accuracy and specialization of each experiment, it also introduces problems of equipment redundancy and increased costs; it increases laboratory operating costs and occupies valuable experimental space. Utility Model Content
[0003] Therefore, in order to overcome the above-mentioned shortcomings, this utility model provides a measuring device for radioactive materials applicable to various experiments (e.g., β / γ counting of nuclides, identification of nuclides by the degree of radiation attenuation, and measurement of nuclide homogeneity). This device integrates common components of multiple experiments into one unit, improving experimental efficiency and utilization of experimental equipment, and also reducing laboratory costs.
[0004] Specifically, a radioactive material measuring device includes a working base, on which at least a data acquisition component and a turntable component are mounted;
[0005] The acquisition component includes a probe and a probe mounting frame, the probe is mounted on the probe mounting frame, and the probe mounting frame is fixedly mounted on the working base surface;
[0006] The turntable assembly is located below the acquisition assembly. The turntable assembly includes a driving component and a turntable. The driving component is fixedly installed on the working base surface, and the turntable is rotatably connected to the driving component. The driving component drives the turntable to rotate.
[0007] The turntable has at least one material placement area, which is positioned directly below the probe after the turntable is rotated to a specified angle.
[0008] Optionally, several material placement areas with open centers are provided on the turntable, and the material placement areas are arranged in a circular array with the center of rotation of the turntable as the center.
[0009] Optionally, the material placement area is a shielding area, which is a part installed on the turntable block or the turntable. The turntable has several shielding areas, which are arranged in a circular array with the rotation center of the turntable as the center. One shielding area does not have a through hole, while the other shielding areas have through holes. The position of each through hole relative to the center of the shielding area is different.
[0010] Optionally, the measuring device for radioactive materials further includes a sample assembly located below the turntable, the sample assembly comprising a feeding block and a discharging block;
[0011] The feeding block is slidably installed on the working base surface, and the discharging block is installed on the feeding block, with a sample placement area provided on the discharging block.
[0012] Optionally, a directional rail is installed on the working base, and the feeding block is slidably installed on the directional rail. Limiting points for limiting the feeding block are provided on the directional rail or on the working base.
[0013] Optionally, the feeding block is provided with a cover plate, and the feeding block has a receiving groove for placing radionuclide samples, wherein the cover plate covers the receiving groove;
[0014] At least the surfaces of the material block and cover plate that contact the radionuclide sample have a radiation shielding layer, and a guide hole penetrating the radiation shielding layer is provided on the cover plate.
[0015] Optionally, the feeding block has a feeding block placement area.
[0016] Optionally, the feeding block is provided with a handle.
[0017] Optionally, the probe fixing frame has a probe groove.
[0018] Optionally, the working base surface is a horizontal workbench surface or a plane formed by the surface of the equipment.
[0019] This utility model has the following advantages:
[0020] This invention relates to a radioactive material measuring device that integrates a collection component, a turntable component, and a sample component into one unit. It is applicable to a variety of experiments (e.g., β / γ counting of nuclides, identification of nuclides by the degree of radiation attenuation, and measurement of nuclide homogeneity), improving experimental efficiency and equipment utilization, reducing laboratory costs, and saving laboratory space. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the structure of the radioactive material measuring device described in Example 1;
[0022] Figure 2 This is a schematic diagram of the disassembled state of the acquisition component described in Embodiment 1;
[0023] Figure 3 This is a schematic diagram of the turntable assembly described in Embodiment 1;
[0024] Figure 4 This is a schematic diagram of the structure of the radioactive material measuring device described in Example 2 (sample assembly reaches the limit site state).
[0025] Figure 5 This is a schematic diagram of the structure of the radioactive material measuring device described in Example 2 (sample assembly pulled out).
[0026] Figure 6 This is a schematic diagram of the turntable assembly described in Embodiment 2;
[0027] Figure 7 This is another schematic diagram of the structure of the turntable assembly described in Embodiment 2;
[0028] Figure 8 This is a schematic diagram of the sample assembly described in Example 2, which is equipped with a directional track.
[0029] Figure 9 This is a schematic diagram of the sample component disassembled state as described in Example 2;
[0030] Figure 10 This is a schematic diagram of the turntable described in Embodiment 3;
[0031] Figure 11 This is a schematic diagram of the overall structure of Embodiment 3;
[0032] Figure 12 It is a schematic diagram of the layout of the seven through holes after the centers of the seven shielding areas with through holes are repeated.
[0033] In the diagram: 100, Sample assembly; 101, Feeding block; 102, Orientation track; 103, Limiting point; 104, Placement groove; 105, Discharge block; 106, Cover plate; 107, Receiving groove; 108, Handle; 109, Guide hole; 200, Turntable assembly; 201, Turntable; 202, Drive component; 203, Material placement area; 204, Through hole; 205, Obstruction area; 206, No-hole obstruction area; 300, Acquisition assembly; 301, Probe; 302, Probe fixing frame; 303, Probe groove; 304, Probe through hole; 400, Working base surface. Detailed Implementation
[0034] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.
[0035] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.
[0036] As described in the background section, in the field of radiometric measurement, multiple specialized devices are typically required to meet diverse measurement needs. For example, in three key experiments—β / γ counting of nuclides, identification of nuclides by radiation attenuation, and measurement of nuclide homogeneity—the traditional approach is to configure three separate devices in a conventional laboratory environment to perform their respective tasks. While this approach ensures the accuracy and specialization of each experiment, it also introduces problems of equipment redundancy and increased costs; it increases laboratory operating costs and occupies valuable experimental space.
[0037] For the reasons mentioned above, although these three experiments differ in their measurement objectives and principles, they share many commonalities in actual operation. Specifically, most of the equipment used in these experiments has a similar structure, with only minor design and adjustments made for specific measurement needs. In other words, these devices are structurally very similar, and conversion from one experiment to another can be achieved simply by changing some components or adjusting parameters.
[0038] Therefore, the utility model provides the following embodiments:
[0039] Example 1:
[0040] like Figures 1-3 As shown, this embodiment provides a measuring device for radioactive materials. The measuring device includes a working base 400, on which at least a data acquisition component 300 and a turntable component 200 are mounted.
[0041] The acquisition component includes a probe 301 and a probe fixing frame 302. The probe 301 is mounted on the probe fixing frame 302, and the probe fixing frame is fixedly mounted on the working base surface 400. Optionally, a probe placement area is provided on the probe fixing frame 302. The probe placement area can be a probe groove 303 with a probe through hole 304. The probe is placed in the probe groove, and the probe faces the component below through the probe through hole 304. The depth of the probe groove can fix the probe and facilitate the installation and removal of the probe.
[0042] The turntable assembly 200 is located below the acquisition assembly. The turntable assembly includes a drive component 202 and a turntable 201. The drive component is fixedly installed on the working base surface 400. The turntable 201 is rotatably connected to the drive component 202, and the drive component 202 drives the turntable 201 to rotate. Preferably, the drive component is a servo motor, and the turntable is a circular disk.
[0043] The turntable has at least one material placement area 203, which is positioned directly below the probe after the turntable rotates to a specified angle. Preferably, the turntable has several material placement areas with open centers, arranged in a circular array around the center of rotation of the turntable. The material placement areas can be grooves formed in the turntable.
[0044] The measuring device provided in this embodiment can perform β / γ counting for nuclides. The probe is a plastic scintillator detector, which has performance advantages for β-ray measurement. When γ-ray detection is required, it can be replaced with a backup BGO (bismuth germanate crystal) detector, which has high detection efficiency for high-energy γ-rays. When performing this function, the material placement area on the turntable is a groove formed on the turntable. The sample is placed in this groove, and then the designated sample is placed under the probe by rotating the turntable, thus realizing β / γ counting of the sample. The turntable can realize material feeding, switching of the sample to be tested, and convenient material retrieval by the staff. By setting several placement areas, multiple samples can be continuously counted, improving experimental efficiency.
[0045] Example 2:
[0046] Based on Example 1, such as Figure 4 and Figure 5 As shown, the measuring device for radioactive materials also includes a sample assembly 100, which is located below the turntable, as shown. Figure 8 and Figure 9As shown, the sample assembly 100 includes a directional track 102, a feeding block 101, a discharging block 105, and a cover plate 106. The directional track 102 is fixedly installed on the working base surface 400, and the feeding block 101 is slidably installed on the directional track 102. A limited position 103 is fixedly provided on the directional track or the working base surface.
[0047] The feeding block 105 has a receiving groove 107 for placing and positioning nuclide samples. The cover plate 106 is installed on the feeding block and covers the receiving groove. A cover plate receiving groove is provided on the upper edge of the receiving groove to facilitate the placement of the cover plate. The cover plate receiving groove is designed to prevent the cover plate from slipping off.
[0048] At least the surfaces of the feeding block 105 and the cover plate 106 that are in contact with the nuclide sample have a radiation shielding layer; optionally, the feeding block and the cover plate can be made of a radiation shielding material, thereby forming a radiation shielding layer on the surfaces of the feeding block and the cover plate that are in contact with the nuclide sample, and a guide hole 109 is provided on the cover plate that penetrates the radiation shielding layer.
[0049] The feeding block 105 is installed on the feeding block 101. The feeding block 101 has a placement groove 104 for placing the feeding block. This placement groove can position the feeding block and prevent it from slipping. The feeding block is equipped with a handle 108. The user pushes the feeding block with the handle, and the operator pushes the feeding block to slide on the directional track until it reaches the limit point. After reaching the limit point, the feeding block containing the nuclide sample is positioned directly below the designated absorption sheet. After the feeding block is positioned directly below the absorption sheet, the guide hole is also positioned directly below the absorption sheet. This guide hole allows the nuclide sample, after the cover plate is closed, to be directly aligned with a certain area of the absorption sheet without any obstructions in between, thus achieving directional radiation of the nuclide sample (i.e., radiation towards the absorption sheet mounted on the turntable).
[0050] Preferred, such as Figure 6 and Figure 7 As shown, the turntable 201 has 10 evenly spaced material placement areas 203. Each material placement area 203 has a through hole 204. Optionally, the material placement area is a groove formed in the turntable, and the groove has a through hole. This through hole allows the absorber to be directly aligned with a certain area of the radionuclide sample below, without any obstructions in between. In use, each material placement area can hold one absorber of a different type.
[0051] This embodiment can achieve the identification of nuclides, for example: the nuclide sample is 90Y, the nuclide can emit beta rays, so the probe can use a plastic scintillation crystal. A voltage regulator and multichannel analyzer module can be integrated inside the probe, simplifying its size. During use, it is connected to a PC via a data cable. In operation, the operator first places the nuclide sample in the receiving slot of the feeding block, then covers it. Next, the feeding block containing the nuclide sample is placed on the feeding block, and the feeding block is pushed along the directional track by a handle until it reaches the limit point. Upon reaching the limit point, the probe, the nuclide sample, and the designated absorber on the turntable are aligned on the same axis. The attenuation level of the nuclide sample is determined by the counts obtained by the scintillation probe under different absorbers, and the nuclide is then identified based on this attenuation level. This embodiment can automatically switch absorbers within the same area, efficiently completing nuclide identification experiments based on mass absorption theory. By designing multiple material placement areas on the turntable, multiple absorbers can be placed. Switching absorbers only requires controlling the rotation of a servo motor, overcoming the low efficiency problem of traditional manual absorber switching.
[0052] The sample assembly described above enables the precise placement of nuclide samples, ensuring that the nuclide sample, absorber, and acquisition module are aligned on the same axis. Through the adaptation of the shielding layer and guide holes, directional radiation of the nuclide is achieved, reducing the impact of radiation leakage on the environment or personnel. The inclusion of an independent discharge block on the feeding block facilitates easy replacement of the discharge block by personnel, as different nuclide samples may require different discharge blocks. This design allows for convenient replacement of the entire discharge block, avoiding the need to replace the entire feeding block.
[0053] In one embodiment, the working base 400 is a horizontal worktable, or a worktable formed on the upper surface of a PC host or other experimental equipment. This technical feature enables the sample assembly 100, the acquisition assembly, and the turntable assembly to be integrated into one unit, allowing operators to quickly and efficiently complete experiments in the same area.
[0054] Example 3:
[0055] like Figures 10-12 As shown, this embodiment is used to measure the uniformity of radioactive materials. Specifically, based on Embodiment 1, the material placement area is a shielding area 205, which is a portion installed on the turntable block or the turntable, such as... Figure 10 and Figure 12 As shown, the turntable has eight blocking areas, arranged in a circular array with the turntable's rotation center as the center. Seven of the eight blocking areas have through holes 204, and the remaining blocking area is a non-perforated blocking area 206. The position of each through hole relative to the center of the blocking area is different, with the through hole in one blocking area located at the center of the blocking area. Figure 12As shown, the positions of the seven through holes are illustrated after the centers of the seven occlusion areas 205 are repeated; of the seven through holes 204, one through hole is located at the center, and the other six through holes are arranged in a uniform circular array based on the center position of the occlusion area (with an included angle of 60° between them, as shown). Figure 12 (As shown in the figure). This setting enables the probe to detect different positions on the sample in order to calculate the uniformity of the sample. The non-perforated occluded area 206 is used to correct the data.
[0056] like Figure 11 As shown, in this embodiment, a sample assembly 100 as described in Embodiment 2 is also included. When measuring the uniformity of radioactive materials, the sample is placed inside the sample assembly (the specific placement method is as described in Embodiment 2). By rotating the turntable, the through holes at different positions are moved between the probe and the sample, thereby enabling the probe to detect (such as counting) different positions of the sample, and thus calculate the uniformity of the sample.
[0057] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A measuring device for radioactive materials, characterized in that: The system includes a working base surface, on which at least a data acquisition component and a turntable component are mounted. The acquisition component includes a probe and a probe mounting frame, the probe is mounted on the probe mounting frame, and the probe mounting frame is fixedly mounted on the working base surface; The turntable assembly is located below the acquisition assembly. The turntable assembly includes a driving component and a turntable. The driving component is fixedly installed on the working base surface, and the turntable is rotatably connected to the driving component. The driving component drives the turntable to rotate. The turntable has at least one material placement area, which is positioned directly below the probe after the turntable is rotated to a specified angle.
2. The measuring device for radioactive materials according to claim 1, characterized in that: The turntable has several material placement areas with central through holes, and these material placement areas are arranged in a circular array with the center of rotation of the turntable as the center.
3. The measuring device for radioactive materials according to claim 1, characterized in that: The material placement area is a shielding area, which is a part of the turntable block or turntable. The turntable has several shielding areas, which are arranged in a circular array with the center of rotation of the turntable as the center. One shielding area does not have a through hole, while the other shielding areas have through holes. The center position of each through hole is different from that of the center of the shielding area.
4. A measuring device for radioactive materials according to any one of claims 1-3, characterized in that: It also includes a sample assembly located below the turntable, the sample assembly comprising a feeding block and a discharging block; The feeding block is slidably installed on the working base surface, and the discharging block is installed on the feeding block, with a sample placement area provided on the discharging block.
5. The measuring device for radioactive materials according to claim 4, characterized in that: A directional rail is installed on the working base surface, and the feeding block is slidably installed on the directional rail. Limiting points for limiting the feeding block are provided on the directional rail or on the working base surface.
6. The measuring device for radioactive materials according to claim 4, characterized in that: The material dispensing block is provided with a cover plate, and the material dispensing block has a receiving groove for placing radionuclide samples, wherein the cover plate covers the receiving groove; At least the surfaces of the material block and cover plate that contact the radionuclide sample have a radiation shielding layer, and a guide hole penetrating the radiation shielding layer is provided on the cover plate.
7. The measuring device for radioactive materials according to claim 4, characterized in that: The feeding block has a feeding block placement area.
8. The measuring device for radioactive materials according to claim 4, characterized in that: The feeding block is equipped with a handle.
9. The measuring device for radioactive materials according to claim 1, characterized in that: The probe mounting frame has a probe groove.
10. The measuring device for radioactive materials according to claim 1, characterized in that: The working base surface is a horizontal workbench surface or a plane formed by the surface of the equipment.