Ring type radiation detector

Abstract

The invention relates to the technical field of radiation monitoring, in particular to a ring type radiation detector. The ring-type radiation detection meter comprises a device shell and ring belts installed at the two ends of the device shell. Any one of the two sides of the device shell is provided with a mounting slot extending into the device shell, a detection inner core is inserted into the mounting slot, and a radiation detection element is sealed on the detection inner core through a transparent sealing sleeve; a first through hole extending to the mounting slot is formed in the position, corresponding to the radiation detection element, of the device shell, an annular table top is arranged in the first through hole, a filter membrane is arranged on the annular table top, and a closed space is formed between the filter membrane and the detection inner core; and a metal pressing ring welded with the device shell is also arranged on the filtering membrane. According to the ring-type radiation detector, leakage of the radiation detection element is avoided, the service life of the radiation detection element is prolonged, and the measurement accuracy of the radiation detection element is improved.

Description

Technical Field

[0001] This application relates to the field of radiation detection technology, and in particular to a ring-type radiation detector. Background Technology

[0002] Workers in radioactive environments often need to handle radioactive materials or equipment at close range. Although specialized shielding devices are installed in radioactive sites to reduce the dose of radioactive materials to workers, some situations still require close handling. For example, during major overhauls of nuclear power plants, when primary circuit equipment is open (such as pumps, valves, steam generators, refueling pools, etc.), radiation sources are exposed. Close contact with radioactive materials can result in a high radiation dose rate from gamma or beta rays to the hands, and existing protective equipment is not very effective in protecting the hands from radiation, allowing them to still receive a significant dose. Ring-type personal dosimeters can monitor the dose to the hands of workers and assess radiation risk.

[0003] The ring-type radiation detectors that are widely used today employ mechanical structures such as snap-fit ​​or threaded fastening to expose the radiation detector elements within a recess in the casing for radiation detection.

[0004] However, because staff often wear gloves when operating the equipment, the gloves have poor breathability, and the sweat inside the gloves is difficult to evaporate during operation, resulting in high humidity. This makes the radiation detector components prone to deliquescence, and they are also easily damaged by frequent vibrations during transportation and use, affecting their service life and reducing the accuracy of dose measurement. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this application is to provide a ring-type radiation detector that can prevent damage to the radiation detector components caused by the working environment and improve the service life of the ring-type radiation detector.

[0006] To achieve the above objectives, this application provides a ring-type radiation detector, comprising: The device includes a housing and ring bands mounted at both ends of the housing. A mounting slot extending into the housing is provided on either side of the housing. A detection core is inserted into the mounting slot, and a radiation detection element is sealed on the detection core by a transparent sleeve. A first through-hole extending into the mounting slot is provided on the housing corresponding to the position of the radiation detection element. An annular platform is provided in the first through-hole, and a filter membrane is provided on the annular platform. A closed space is formed between the filter membrane and the detection core. A metal pressure ring welded to the housing is also provided on the filter membrane.

[0007] Furthermore, an elastic sealing strip is fixed to the inner wall of the mounting slot.

[0008] Furthermore, the device housing has a notch extending into the inside of the housing on one side where the mounting slot is provided, and the portion of the detection core exposed to the notch after being inserted into the mounting slot has anti-slip texture.

[0009] Furthermore, a sliding switch is slidably connected to the outer shell of the device, and a slider extending into the mounting slot is fixedly connected to the sliding switch. The detection core is provided with a slot that is adapted to engage with the slider.

[0010] Furthermore, the radiation detection element includes any one of thermoluminescence detection element, optically stimulated luminescence detection element, and glass fluorescence detection element.

[0011] Furthermore, the filter membrane includes one or a combination of a dustproof membrane and a waterproof membrane.

[0012] Furthermore, the filter membrane is adhered to the annular platform.

[0013] Furthermore, the detection core is also sealed with a label by a transparent sleeve, and the device housing is provided with a second through hole extending to the mounting slot corresponding to the position of the label, and the surface of the device housing is provided with a transparent window corresponding to the position of the second through hole.

[0014] Furthermore, it also includes: The inner core carrier includes an upper cover plate and a lower cover plate riveted together by rivets. The upper cover plate is provided with a plurality of slots for inserting the inner core, and the lower cover plate is provided with detection through holes corresponding to the positions of the radiation detection elements of the inner core.

[0015] Furthermore, four slots are provided.

[0016] The ring-type radiation detector provided in this application has its radiation detection element protected by a transparent sleeve and a filter membrane, which prevents the radiation detection element from being exposed, improves the service life and measurement accuracy of the radiation detection element, and prevents the radiation detection element from being damaged by deliquescence, thus extending the service life of the radiation detection element.

[0017] The ring-type radiation detector provided in this application adopts a core-pulling design, which is simple in structure, convenient for inserting and removing the detection core, safe and stable, and easy to use.

[0018] The ring-type radiation detector provided in this application has a notch, anti-slip texture, and sliding switch, which facilitates the insertion and fixing of the detection core and the removal of the detection core.

[0019] The ring-type radiation detector provided in this application is also equipped with labels to facilitate the organization of radiation detection information according to the identity of the testing personnel.

[0020] Other features and advantages of this application will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing this application. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the present application and form part of the specification. Together with the embodiments of the present application, they serve to explain the present application but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the ring-type radiation detector of this application; Figure 2 This is an exploded view of the ring-type radiation detector of this application; Figure 3 This is a schematic diagram of the slide switch of this application; Figure 4 A schematic diagram of the structure of the core carrier for testing; In the diagram: 1-device housing, 2-mounting slot, 3-detection core, 4-radiation detection element, 5-label paper, 6-first through hole, 7-annular platform, 8-filter membrane, 9-metal pressure ring, 10-transparent window, 11-first finger ring band, 12-second finger ring band, 13-elastic sealing strip, 14-notch, 15-slide switch, 16-slider, 31-anti-slip texture, 32-slot, 21-upper cover plate, 22-lower cover plate, 23-rivet, 24-slot, 25-detection through hole. Detailed Implementation

[0022] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While some embodiments of this application are shown in the drawings, it should be understood that this application can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this application. It should be understood that the drawings and embodiments of this application are for illustrative purposes only and are not intended to limit the scope of protection of this application.

[0023] It should be understood that the steps described in the method embodiments of this application may be performed in different orders and / or in parallel. Furthermore, the method embodiments may include additional steps and / or omit the steps shown. The scope of this application is not limited in this respect.

[0024] The term "comprising" and its variations as used herein are open-ended inclusions, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the description below.

[0025] It should be noted that the terms "one" and "multiple" used in this application are illustrative rather than restrictive, and those skilled in the art should understand that, unless explicitly stated otherwise in the context, they should be understood as "one or more". "Multiple" should be understood as two or more.

[0026] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0027] Example 1 One embodiment of this application provides a ring-type radiation detector. Figure 1 The following is a schematic diagram of the ring-type radiation detector of this application, which will be referred to below. Figure 1 The ring-type radiation detector of this application is described in detail, including: The device housing 1 includes a first ring band 11 and a second ring band 12 installed at both ends of the device housing 1. A mounting slot 2 extending into the interior of the device housing 1 is provided on either side of the device housing 1. A detection core 3 is inserted into the mounting slot 2, and a radiation detection element 4 is sealed on the detection core 3 by a transparent sleeve. A first through hole 6 extending into the mounting slot is provided on the device housing 1 corresponding to the position of the radiation detection element 4. An annular platform 7 is provided in the first through hole 6, and a filter membrane 8 is provided on the annular platform 7. A closed space is formed between the filter membrane 8 and the detection core 3. A metal pressure ring 9 welded to the device housing 1 is also provided on the filter membrane 8.

[0028] In this embodiment, an elastic sealing strip 13 is also provided in the mounting slot 2 to ensure dust and water resistance after the detection core 3 is inserted.

[0029] In this embodiment, a notch 14 extending into the inside of the device housing 1 is provided on one side where the mounting slot 2 is provided. The part of the detection core 3 exposed to the notch 14 after being inserted into the mounting slot 2 is provided with anti-slip texture 31 so as to quickly and conveniently pull out the detection core 3.

[0030] In this embodiment, a sliding switch 15 is slidably connected to the outer shell 1 of the device. The sliding switch 15 is fixedly connected to a slider 16 extending into the mounting slot 2. The detection core is provided with a slot 32 that is adapted to engage with the slider 16. In use, the sliding switch 15 is pushed out and inserted into the detection core 3. Then the sliding switch 15 is pushed back, which causes the slider 16 to engage with the slot 32 on the detection core 3, thereby limiting and fixing the detection core and preventing it from shaking and falling off during wear.

[0031] In this embodiment, the radiation detection element 4 is a thermoluminescence detection element.

[0032] In other embodiments, the radiation detection element 4 may be any one of a thermoluminescence detection element, an optically stimulated luminescence detection element, and a glass fluorescence detection element.

[0033] Thermoluminescence (TEL) detectors utilize the property of crystalline materials (such as LiF and CaSO4) to store energy after being irradiated. When heated, this stored energy is released in the form of light, and the radiation dose can be calculated by measuring the intensity of the light. They are widely used in personal dose monitoring, environmental radiation assessment, and the medical field. Their advantages include reusability and high sensitivity. However, after each reading, reheating and annealing are required to reset the material, which may cause gradual changes in the crystal structure. Regular calibration is necessary to ensure accuracy.

[0034] The optically stimulated luminescence (OSLD) detector uses materials such as Al2O3:C. Upon exposure to radiation, it releases stored energy through stimulation with laser or LED light of a specific wavelength, generating a fluorescence signal. Unlike TLDs, OSLDs require no heating and support non-destructive, repeated readings, making them particularly suitable for scenarios requiring high precision and repetitive measurements, such as real-time dose monitoring in cancer radiotherapy. While offering superior sensitivity and spatial resolution compared to TLDs, OSLDs rely on sophisticated optical equipment, resulting in higher costs. Furthermore, light stimulation can cause partial signal attenuation, necessitating strict control of reading conditions.

[0035] Among them, the glass fluorescence detection element is made of silver-doped phosphate glass. Under radiation, it forms metastable luminescent centers, which emit fluorescence after ultraviolet excitation, and the intensity of the fluorescence is proportional to the cumulative dose. The unique advantage of RPL glass is that the data can be stored for a long time without annealing, making it suitable for dose reconstruction after a nuclear accident or long-term environmental monitoring. However, reading the data requires specialized ultraviolet light sources and spectral analysis equipment, making the process relatively complex, and high doses may cause signal saturation, limiting its dynamic range. These elements have irreplaceable value in the nuclear industry and emergency response.

[0036] In this embodiment, the filter membrane 8 is a transparent film that is dustproof and waterproof.

[0037] In some other embodiments, the filter membrane 8 may also be a dustproof membrane or a waterproof membrane.

[0038] In this embodiment, the filter membrane 8 is adhered to the annular platform 7.

[0039] In this embodiment, the inner core 3 is also sealed with a label 5 by a transparent cover, and the outer shell 1 of the device is provided with a second through hole extending to the mounting slot 2 corresponding to the position of the label 5. The surface of the outer shell 1 of the device is provided with a transparent window 10 corresponding to the position of the second through hole.

[0040] In this embodiment, the first finger ring band 11 and the second finger ring band 12 are telescopic buckle finger ring bands to accommodate fingers of various sizes.

[0041] One working process of an embodiment of this application is as follows: When performing the operation, the operator pushes out the slide switch 15, inserts the detection core 3 into the mounting slot 2, and then pushes back the slide switch 15, causing the slider 16 to engage with the slot 32 on the detection core 3. The ring-type radiation detector is then worn on the operator's finger for radiation detection. After the operation is completed, the operator pushes out the slide switch 15, causing the slider 16 to leave the slot 32, and removes the detection core 3 from the device housing 1. The detection result of the radiation detection element 4 can then be read.

[0042] In this embodiment, a matching detection core carrier is also provided, which can realize the one-time automatic reading of four detector elements, thus improving the reading efficiency. Figure 2 For a schematic diagram of the structure of the core wafer, please refer to... Figure 2 The inner core carrier includes an upper cover plate 21 and a lower cover plate 22 riveted together by rivets 23. The upper cover plate 21 is provided with a plurality of slots 24 for inserting the inner core 3. The lower cover plate 22 is provided with a detection through hole 25 corresponding to the position of the radiation detection element 4 of the inner core 3.

[0043] In this embodiment, four slots 24 are provided.

[0044] In other embodiments, the number of slots 24 can also be adjusted adaptively according to the actual lengths of the upper cover plate 21 and the lower cover plate 22 and the length of the detection core 3.

[0045] The above description is merely a partial embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of disclosure in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

[0046] Furthermore, while the operations are described in a specific order, this should not be construed as requiring these operations to be performed in the specific order shown or in sequential order. Multitasking and parallel processing may be advantageous in certain environments. Similarly, while several specific implementation details are included in the above discussion, these should not be construed as limiting the scope of this application. Certain features described in the context of individual embodiments may also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented individually or in any suitable sub-combination in multiple embodiments.

[0047] Although the subject matter has been described using language specific to structural features and / or methodological logic, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. Rather, the specific features and actions described above are merely illustrative examples of implementing the claims.

Claims

1. A finger ring type radiation detection meter characterized by, The device shell and the ring belt mounted at both ends of the device shell; any one side of the two sides of the device shell is provided with a mounting slot extending to the inside of the device shell, the mounting slot is inserted with a detection core, the detection core is sealed with a radiation detection element through a transparent envelope; the device shell is provided with a first through hole extending to the mounting slot corresponding to the position of the radiation detection element, the first through hole is provided with an annular mesa, the annular mesa is provided with a filter film, the filter film and the detection core form a closed space, and the filter film is further provided with a metal compression ring welded with the device shell.

2. The finger ring type radiation detection meter according to claim 1, wherein The mounting slot is fixed with an elastic sealing strip.

3. The finger ring type radiation detection meter according to claim 1, wherein The side of the device shell provided with the mounting slot is also provided with a notch extending to the inside of the device shell, and the part of the detection core exposed to the notch after being inserted into the mounting slot is provided with an anti-skid pattern.

4. The finger ring radiation detection meter according to claim 1, wherein The device shell is slidably connected with a sliding switch, the sliding switch is fixedly connected with a sliding block extending into the mounting slot, and the detection core is provided with a clamping groove matched with the sliding block.

5. The finger ring radiation detection meter according to claim 1, wherein, The radiation detection element includes any one of a thermoluminescence detection element, a photoluminescence detection element and a glass fluorescence detection element.

6. The finger ring radiation detection meter according to claim 1, wherein, The filter film includes one or a combination of a dustproof film and a waterproof film.

7. The finger ring type radiation detection meter according to claim 1, wherein Further comprising: The filter film is pasted on the annular mesa.

8. The finger ring radiation detection meter according to claim 1, wherein, The detection core is also sealed with a label paper through a transparent envelope, the device shell is provided with a second through hole extending to the mounting slot corresponding to the position of the label paper, and the surface of the device shell is provided with a transparent window corresponding to the position of the second through hole.

9. The finger ring radiation detection meter according to claim 1, wherein, Further comprising: The detection core carrier includes an upper cover plate and a lower cover plate riveted by a rivet, the upper cover plate is provided with a plurality of insertion slots for inserting the detection core, and the lower cover plate is provided with a detection through hole corresponding to the position of the radiation detection element of the detection core.

10. The finger ring radiation detection meter according to claim 9, wherein, The insertion slot is provided with four.

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