Gamma radionuclide measurement sample box and gamma radionuclide measurement system
By designing a sample box for measuring gamma radionuclides and using anti-displacement fixing components to secure the sample, the problem of unstable position of aerosol filter membrane samples during measurement was solved, improving measurement accuracy and repeatability, and realizing the reusability and environmental protection of the sample box.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-18
- Publication Date
- 2026-03-31
AI Technical Summary
In existing technologies, the shape and position of aerosol filter membrane samples are difficult to control during measurement, leading to inaccurate measurement results. Furthermore, traditional sample boxes are difficult to keep the sample position stable, affecting measurement accuracy.
A sample box for measuring gamma radionuclides was designed, comprising a box body, a cover, and an anti-displacement fixing component. The anti-displacement fixing component secures the sample, ensuring that its position remains unchanged during measurement and that it can be reused.
It improves the accuracy and repeatability of measurements, ensures that the sample is in the same position during different measurement processes, reduces measurement errors, and the sample box is reusable, making it environmentally friendly and economical.
Smart Images
Figure CN224067007U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of radioactivity detection technology, specifically to a gamma radionuclide measurement sample box and a gamma radionuclide measurement system. Background Technology
[0002] Effluent monitoring is a crucial component of nuclear power plant radioactivity level monitoring, emergency management, and nuclear safety oversight. Measuring particles in gaseous effluent emitted from the main chimney of the nuclear island is one type of gaseous effluent monitoring project. These particles are typically collected using a filter membrane made of materials such as cellulose acetate with an effective diameter of approximately 40 mm and a thickness of less than 1 mm, forming an aerosol sample. The gamma-ray radionuclide content is then quantitatively analyzed using gamma-ray spectrometry. During measurement, samples are often packaged in plastic bags and then placed in a traditional sample box or directly on the detector surface. Because the aerosol filter membrane is very thin, it is difficult to control the shape and position of the membrane within the plastic bag, making it highly susceptible to samples moving far from the detector surface and affecting the measurement results. Utility Model Content
[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a sample box for measuring gamma radionuclides, thereby improving measurement accuracy.
[0004] To solve the above-mentioned technical problems, the objective of this utility model is achieved through the following technical solution:
[0005] A sample box for measuring gamma radionuclides includes a box body for placing the sample, a cover that cooperates with the box body, and a displacement-preventing fixing member for preventing the sample from moving inside the box body.
[0006] Preferably, the bottom of the box is bonded to the sample.
[0007] Preferably, the sample includes a sample collection filter membrane and a plastic bag for sealing the sample collection filter membrane.
[0008] Preferably, the bottom of the box is connected to the plastic bag by adhesive tape.
[0009] Preferably, the anti-displacement fixing member matches the internal shape of the box body. When a sample is placed inside the box body, the anti-displacement fixing member covers the sample to flatten the sample and prevent it from moving.
[0010] Preferably, the anti-displacement fixing component is a disc-shaped sponge.
[0011] Preferably, the box body has an adhesive positioning area for attaching the sample; the box body is circular.
[0012] This invention also provides a gamma radionuclide measurement system, including a sample holder fixed to the detector of the measuring instrument and used to fix the gamma radionuclide measurement sample box as described above.
[0013] Preferably, the sample holder has a fixing slot for fixing the gamma radionuclide measurement sample box, and the fixing slot corresponds to the position of the detector's detection port so that the gamma radionuclide measurement sample box is aligned with the detector's detection port.
[0014] Preferably, the measuring instrument is a high-purity germanium gamma spectrometer.
[0015] The advantages of this utility model compared with the prior art are:
[0016] In this invention, the collected sample is placed in a sample box, and the anti-displacement fixing component ensures that the sample position remains unchanged during measurement, thereby improving measurement accuracy. Furthermore, the sample box in this embodiment can be used to measure different samples, is reusable, and is environmentally friendly and economical.
[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the structure of a gamma-ray radionuclide measurement sample box in this embodiment.
[0020] Figure 2 This is a schematic diagram of the structure of a gamma-ray radionuclide measurement sample box in this embodiment.
[0021] Figure 3 This is a schematic diagram of the structure of a gamma-ray radionuclide measurement sample box in this embodiment.
[0022] Figure 4 This is a schematic diagram of the structure of a gamma radionuclide measurement system in this embodiment.
[0023] Figure 5 This is a schematic diagram of the sample holder in this embodiment.
[0024] Explanation of the markings in the image:
[0025] 1. Sample box for measuring gamma radionuclides; 11. Box body; 12. Lid; 13. Sample; 14. Anti-displacement fastener;
[0026] 2. Sample holder; 21. Fixing slot;
[0027] 3. Detector. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0029] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.
[0030] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.
[0031] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.
[0032] This embodiment is a sample box 1 for measuring gamma radionuclides, including a box body 11 for placing a sample 13, a cover 12 that cooperates with the box body 11, and an anti-displacement fixing member 14 for preventing the sample 13 from moving inside the box body 11.
[0033] In this embodiment, sample 13 is placed inside box 11 and then fixed by anti-displacement fixing component 14. This ensures that the position of sample 13 remains unchanged during measurement, improving measurement accuracy. Furthermore, the sample box 13 in this embodiment can be used for measuring different samples 13 and can be reused.
[0034] In this embodiment, the anti-displacement fixing member 14 can have various structural forms. For example, some pressing structures can be set inside the box 11. When the sample 13 is placed inside the box 11, the pressing structure will fix the sample 13. Of course, other methods can also be used to achieve this.
[0035] In one embodiment, the bottom of the box 11 is bonded to the sample 13.
[0036] In this embodiment, the sample 13 can be pasted and fixed inside the box 11, which can keep the sample 13 flat at the bottom of the box 11, improve the flatness of the sample 13, avoid errors caused by shape changes, and, together with the anti-displacement fixing part 14, make the sample 13 more firmly fixed and prevent it from moving.
[0037] In one embodiment, the sample 13 includes a sample 13 collection filter membrane and a plastic bag for sealing the sample 13 collection filter membrane.
[0038] In this embodiment, sealing the sample 13 aerosol filter membrane (the collected aerosol filter membrane) in a plastic bag solves the problem of potential unevenness of the filter membrane and prevents dust from falling off or potentially volatile radionuclides from volatilizing. Specifically, during sealing, the collected aerosol filter membrane is placed flat in a plastic bag and sealed in a ring using a sealing process, ensuring that air is removed as much as possible during sealing.
[0039] In one embodiment, the bottom of the box body 11 is connected to the plastic bag by adhesive tape.
[0040] In this embodiment, the plastic bag can be attached to the bottom of the box 11 with tape, such as double-sided tape, which is convenient, quick and easy to install and remove.
[0041] To facilitate the positioning and fixing of the sample 13, in one embodiment, the box body 11 has an adhesive positioning area for attaching the sample 13. In this embodiment, the adhesive positioning area can be provided, and the sample 13 can be attached and fixed to the adhesive positioning area.
[0042] In this embodiment, the box 11 can have various structural forms. In one embodiment, the box 11 is circular. Of course, the shape of the box 11 can also be other shapes, and various settings can be made according to actual needs.
[0043] In one embodiment, the anti-displacement fixing member 14 matches the internal shape of the box body 11. When the sample 13 is placed inside the box body 11, the anti-displacement fixing member 14 covers the sample 13 to flatten the sample 13 and prevent it from moving.
[0044] The anti-displacement fixing member 14 in this embodiment can have various structural forms. In one embodiment, the anti-displacement fixing member 14 is a disc-shaped sponge.
[0045] In this embodiment, a disc-shaped sponge is used. The disc-shaped sponge is lightweight and easy to place. After the sample 13 is placed in the box 11, the disc-shaped sponge is placed on the sample 13, and then the cover 12 is put on. The disc-shaped sponge can press down on the sample 13, making the sample 13 flatter and fixed in position.
[0046] This embodiment also provides a gamma radionuclide measurement system, including a sample holder 2 fixed to the detector 3 of the measuring instrument and used to fix the gamma radionuclide measurement sample box 1 as described above.
[0047] In this embodiment, the sample holder 2 can be used to position and fix the γ radionuclide measurement sample box 1. The sample holder 2 can have various structural forms, such as being detachable, or fixed to the detector 3 by snap-fit or other means. The γ radionuclide measurement sample box 1 can also be fixed by snap-fit or other means.
[0048] In one embodiment, the sample holder has a fixing slot 21 for fixing the gamma radionuclide measurement sample box 1, the fixing slot 21 corresponding to the position of the detector's detection port, so that the gamma radionuclide measurement sample box 1 is aligned with the detector's detection port.
[0049] In this embodiment, the sample holder is provided with a fixing slot 21. The gamma radionuclide measurement sample box 1 is then inserted into the fixing slot, which secures it in place. Since the fixing slot corresponds to the detector port, the gamma radionuclide measurement sample box 1 remains aligned with the detector port, and its relative position remains unchanged. This ensures that the relative positions of the measurement sample, efficiency calibration source, and detector are strictly consistent, resulting in more precise efficiency calibration and more accurate measurement results. It also ensures that the placement position can be repeated when retesting samples or measuring different samples, thereby improving the comparability of measurement results between different samples or multiple measurements of the same sample.
[0050] In one embodiment, the measuring instrument is a high-purity germanium gamma spectrometer.
[0051] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. A gamma radionuclide measurement sample cassette, characterized in that, The application relates to a sample box for placing a sample, a cover matched with the sample box, and a displacement preventing fixing member for preventing the sample in the sample box from moving.
2. The sample case for measurement of gamma radionuclides according to claim 1, characterized in that, The bottom of the sample box is pasted with the sample.
3. The sample case for measurement of gamma radionuclides according to claim 1, characterized in that, The sample comprises a sample collection filter film and a plastic sealing bag for sealing the sample collection filter film.
4. The sample case for measurement of gamma radionuclides according to claim 3, characterized in that, The bottom of the sample box is pasted with the plastic sealing bag through a tape.
5. The sample capsule for measuring a gamma radionuclide according to any one of claims 1 to 4, characterized by The displacement preventing fixing member is matched with the internal shape of the sample box, and the displacement preventing fixing member covers the sample when the sample is placed in the sample box, so that the sample is flattened and prevented from moving.
6. The sample case for measuring a gamma radionuclide according to claim 5, wherein, The displacement preventing fixing member is a pie-shaped sponge.
7. The sample case for measuring a gamma radionuclide according to claim 2, characterized by, The sample box has a pasting positioning area for pasting the sample, and the sample box is circular.
8. A gamma radionuclide measurement system characterized by, The application relates to a sample fixing frame for fixing a gamma radionuclide measuring sample box as claimed in any one of claims 1 to 6 at a detector of a measuring instrument.
9. The gamma radionuclide measurement system of claim 8, wherein, The sample fixing frame has a fixing slot for fixing the gamma radionuclide measuring sample box, and the fixing slot is matched with the position of a detection port of the detector, so that the gamma radionuclide measuring sample box is aligned with the detection port of the detector.
10. The gamma radionuclide measurement system of claim 8, wherein, The measuring instrument is a high-purity germanium gamma spectrometer.