A low-background radiation detection device with a dedicated shield

Abstract

The utility model relates to radiation detection technical field, and disclose a low background radiation detection device with special shield cover, special shield cover adopts double -deck nested structure, inner layer lead alloy blocks gamma ray, outer layer polyethylene, boron powder mixed material absorbs neutron, and cooperate interlayer vacuum layer reduces radiation scattering, superimposed antistatic coating eliminates static interference, all -round promotion shielding effect, guarantee detection data accuracy, the cooperation of elastic clamping piece and buffer pad, silica gel pad in fixed assembly, can fixed detection main part stably, can also buffer vibration, avoid scratch loss, the wiring hole can also neat cable, improve device operation stability and security, shield cover up and down splicing design and detachable shield cover plate, be convenient for device assembly, overhaul and detection window protection, reduce operation maintenance difficulty.

Description

Technical Field

[0001] This utility model relates to the field of radiation detection technology, specifically a low background radiation detection device with a dedicated shielding cover. Background Technology

[0002] In fields such as environmental monitoring, nuclear industry safety, and medical radiation detection, accurate detection of low background radiation is a crucial step in assessing environmental safety, ensuring the normal operation of equipment, and protecting personnel health. Low background radiation signals are weak and easily affected by natural radiation in the external environment (such as cosmic rays and radioactive nuclides in the soil), artificial radiation sources (such as radiation from surrounding electronic equipment and nuclear facility leaks), and electromagnetic interference, leading to deviations in detection data and making it difficult to meet the requirements of high-precision monitoring.

[0003] Traditional low-background radiation detection devices often employ a single shielding structure, such as using only lead plates to shield gamma rays, which cannot effectively block neutron radiation. Furthermore, the shielding layer does not fit well with the detection body, allowing external radiation to easily interfere with the detection through gaps. Although some devices have added multiple layers of shielding, there is no isolation design between the layers, and the air medium will aggravate radiation scattering, further reducing the shielding effect. At the same time, the fixed components of traditional devices are mostly rigid connections without buffer structures. In transportation or vibration environments, the detection body is prone to displacement or damage, affecting the detection stability. Moreover, the wiring is messy, and signal transmission failures are easily caused by cable compression. In addition, some devices do not have a dedicated detection window protection structure, allowing external dust and radiation to easily enter when idle, shortening the service life of the detection components.

[0004] Therefore, a low background radiation detection device with a dedicated shield is proposed to address the above problems. Utility Model Content

[0005] To address the problems mentioned in the background art, this utility model provides a low background radiation detection device with a dedicated shielding cover. This low background radiation detection device has the functions of efficient shielding, stable fixation, and convenient maintenance, which can effectively reduce external radiation interference and improve the accuracy and reliability of radiation detection.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a low background radiation detection device with a dedicated shielding cover, comprising a detection body, a dedicated shielding cover, and a fixing assembly; the detection body includes a detector, a signal processing module, a data transmission module, and a power supply module, wherein the detector is electrically connected to the signal processing module, the signal processing module is electrically connected to the data transmission module, and the power supply module supplies power to the detector, the signal processing module, and the data transmission module respectively; The special shielding cover adopts a two-part splicing structure, including an upper cover, a lower cover, and a connector. The upper cover and the lower cover are connected by the connector. The connector consists of two parts: a buckle and a locking block. The buckle is installed on both sides of the lower cover, and the locking block is installed on the upper cover at the corresponding position of the buckle. The buckle and the locking block flip and fasten together. The fixing component includes a fixing bracket and a buffer pad. The fixing bracket is disposed between the inner shield and the detection body. The buffer pad is attached to the inner side of the fixing bracket. The fixing bracket has several wiring holes.

[0007] Preferably, the upper and lower covers are a double-layer nested structure, including an inner shield and an outer shield. The inner shield wraps around the outside of the detection body, and the outer shield wraps around the outside of the inner shield. The inner shield is made of lead alloy material with a thickness of 3-5 mm, and the outer shield is made of a mixture of polyethylene and boron powder with a thickness of 8-12 mm, wherein the mass percentage of boron powder is 5-8%.

[0008] Preferably, the upper cover of the special shielding cover has a detection window at the detection end position of the detection body, and a detachable shielding cover is provided at the detection window. The material of the shielding cover is the same as that of the inner shielding body.

[0009] Preferably, the outer surface of the outer shield is provided with an antistatic coating, which is a polyimide coating.

[0010] Preferably, a vacuum layer is provided between the inner shield and the outer shield, and the thickness of the vacuum layer is 2-3 mm.

[0011] Preferably, the fixing assembly further includes a clamping member disposed within the fixing bracket. The clamping member includes clamping plates symmetrically disposed within the fixing bracket. A sliding rod is mounted on one side surface of the clamping plate. The sliding rod passes through the fixing bracket and is connected to a fixing plate on the outside of the fixing bracket. A spring is wound around the surface of the sliding rod. One end of the spring is connected to the fixing plate, and the other end of the spring is connected to the outer surface of the fixing bracket.

[0012] Preferably, a silicone pad is provided on the side surface of the clamping plates that are close to each other.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This device effectively addresses the technical challenges of traditional low-background radiation detection devices through multi-dimensional structural optimization, and possesses significant advantages: Firstly, the special shielding cover adopts a double-layer nested structure. The inner layer is a lead alloy that blocks gamma rays, while the outer layer is a mixture of polyethylene and boron powder that absorbs neutrons. Combined with the interlayer vacuum layer, it reduces radiation scattering, and the superimposed antistatic coating eliminates electrostatic interference, thus comprehensively improving the shielding effect and ensuring the accuracy of the detection data.

[0014] Secondly, the elastic clamping components in the fixing assembly work together with the buffer pads and silicone pads to not only stably fix the detection body, but also buffer vibrations and prevent scratches. The wiring holes can also organize the cables, improving the stability and safety of the device operation.

[0015] Third, the top and bottom splicing design of the shielding cover and the detachable shielding cover facilitate device assembly, maintenance and protection of the detection window, and reduce the difficulty of operation and maintenance.

[0016] Fourth, the overall structure is adaptable to various scenarios such as environmental monitoring and nuclear industry, and can efficiently capture weak radiation signals, providing reliable equipment support for high-precision radiation monitoring, combining practicality and economy. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the special shielding cover in this utility model; Figure 3 This is an assembly effect diagram of the upper cover and the lower cover in this utility model; Figure 4 This is a schematic diagram of the fixing component in this utility model; Figure 5 In this utility model Figure 4 Enlarged view of the structure at point A.

[0018] In the diagram: 1. Detector body; 2. Dedicated shielding cover; 21. Upper cover; 211. Detection window; 212. Shielding cover plate; 22. Lower cover; 23. Connector; 231. Buckle; 232. Locking block; 24. Inner shielding layer; 25. Outer shielding layer; 26. Vacuum layer; 3. Fixing assembly; 31. Fixing bracket; 32. Buffer pad; 33. Clamping component; 331. Clamping plate; 332. Slide rod; 333. Fixing plate; 334. Spring; 335. Silicone pad; 34. Wiring hole. Detailed Implementation

[0019] 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, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figures 1 to 5 As shown, this utility model provides a low background radiation detection device with a dedicated shielding cover, including a detection body 1, a dedicated shielding cover 2, and a fixing component 3; the detection body 1 includes a detector, a signal processing module, a data transmission module, and a power supply module, wherein the detector is electrically connected to the signal processing module, the signal processing module is electrically connected to the data transmission module, and the power supply module supplies power to the detector, the signal processing module, and the data transmission module respectively.

[0021] The dedicated shielding cover 2 adopts a two-part splicing structure, which can provide all-round radiation shielding protection for the detection body 1 and reduce the interference of external radiation on the detection results. The dedicated shielding cover 2 includes an upper cover 21, a lower cover 22 and a connector 23. The upper cover 21 and the lower cover 22 are precisely connected through the connector 23. The connector 23 consists of two parts: a buckle 231 and a locking block 232. The buckle 231 is installed on both sides of the lower cover 22, and the locking block 232 is installed on the upper cover 21 at the corresponding position of the buckle 231. By flipping and locking the buckle 231 and the locking block 232, the assembly and disassembly of the upper cover 21 and the lower cover 22 can be realized quickly and conveniently, which facilitates the inspection and maintenance of the detection body 1.

[0022] It should be noted that both the upper cover 21 and the lower cover 22 adopt a double-layer nested structure, including an inner shield 24 and an outer shield 25. The inner shield 24 wraps around the outside of the detector body 1 and is made of lead alloy material with a thickness of 3-5 mm. Lead alloy has excellent radiation shielding performance and can effectively block high-energy radiation such as gamma rays, creating a low-radiation interference internal environment for the detector body 1. The outer shield 25 wraps around the outside of the inner shield 24 and is made of a mixture of polyethylene and boron powder with a thickness of 8-12 mm, of which boron powder accounts for 5-8% by mass. Polyethylene has a good moderation effect on neutrons, while boron powder can effectively absorb the moderated neutrons. The combination of the two can significantly reduce the impact of neutron radiation on the detector body 1 and further improve the overall shielding effect of the device.

[0023] The upper cover 21 of the special shielding cover 2 has a detection window 211 at the detection end position of the detection body 1. The detection window 211 is the channel for the detection body 1 to receive external radiation signals. Its size and position are precisely designed to ensure that the detection body 1 can efficiently collect radiation signals. A detachable shielding cover 212 is provided at the detection window 211. The material of the shielding cover 212 is the same as that of the inner shielding body 24. When the device is not performing detection work or when it is necessary to protect the detection window 211, the shielding cover 212 can be installed at the detection window 211 to effectively block external radiation from entering, protect the detection body 1, and prevent the detection window 211 from being contaminated by dust, impurities, etc.

[0024] It should be noted that the outer surface of the outer shield 25 is provided with an antistatic coating, which is a polyimide coating. The polyimide coating has good antistatic properties, which can effectively eliminate the interference of external static electricity on the device, prevent static electricity from damaging the precision electronic components inside the detector body 1, and ensure the stable operation of the device. At the same time, it also has certain wear resistance and corrosion resistance properties, which can extend the service life of the outer shield.

[0025] A vacuum layer 26 with a thickness of 2-3 mm is provided between the inner shield 24 and the outer shield 25. The vacuum layer 26 can effectively reduce the scattering and absorption of radiation by air, further reduce the interference of external radiation on the detection body 1 through the air medium, and at the same time play a certain role in heat insulation, reducing the impact of external temperature changes on the working performance of the detection body 1, and ensuring the stability and accuracy of the detection data.

[0026] like Figures 1 to 5 As shown, the fixing component 3 is used to stably fix the detection body 1 inside the special shield 2, and at the same time plays a role in buffering and protection. The fixing bracket 31 is set between the inner shield 24 and the detection body 1. It is made of high-strength, lightweight alloy material, which has good load-bearing capacity and stability, and can provide reliable support for the detection body 1. The buffer pad 32 is attached to the inner side of the fixing bracket 31 and is made of elastic rubber material. When the device is transported, handled or subjected to slight external vibration, the buffer pad 32 can effectively absorb vibration energy, reduce the impact of vibration on the detection body 1, protect the precision components inside the detection body 1, and avoid the decrease in detection accuracy or damage to components due to vibration. The fixing bracket 31 is provided with several wiring holes 34. The wiring holes 34 are used for the arrangement of cables between the modules of the detection body 1 and the connection cables between the detection body 1 and external equipment, so that the cables are arranged neatly and orderly, avoiding cable tangling and compression damage, and facilitating cable inspection and replacement.

[0027] The fixing assembly 3 also includes a clamping member 33 disposed within the fixing bracket 31. The clamping member 33 is used to further clamp and fix the detection body 1, preventing the detection body 1 from shifting inside the device. The clamping member 33 includes clamping plates 331 symmetrically disposed within the fixing bracket 31. A sliding rod 332 is mounted on one side surface of the clamping plate 331. The sliding rod 332 passes through the fixing bracket 31 and is connected to the fixing plate 333 on the outside of the fixing bracket 31. A spring 334 is wound around the surface of the sliding rod 332. One end of the spring 334 is connected to the fixing plate 333, and the other end of the spring 334 is connected to the fixing bracket. The outer surfaces of 31 are connected. When installing the detection body 1, the fixing plate 333 is pulled outward, which drives the slide rod 332 and the clamping plate 331 to move outward. The spring 334 is stretched, and the detection body 1 is placed between the two clamping plates 331. Then the fixing plate 333 is released. Under the elastic restoring force of the spring 334, the slide rod 332 drives the clamping plate 331 to move towards the detection body 1, thereby clamping and fixing the detection body 1. This clamping structure has good adaptability and can be finely adjusted according to the size of the detection body 1 to ensure stable clamping of detection bodies 1 of different specifications.

[0028] It should be noted that a silicone pad 335 is provided on the side surface of the clamping plates 331 that are close to each other. The silicone pad 335 has good elasticity and anti-slip properties. When clamping the detection body 1, it can increase the friction between the clamping plate 331 and the detection body 1, preventing the detection body 1 from sliding during the clamping process. It can also prevent the clamping plate 331 from causing scratches, squeezing or other damage to the surface of the detection body 1, thus protecting the appearance and surface coating of the detection body 1.

[0029] Working principle and process: Assemble the lower cover of the special shielding cover: Place the lower cover 22 in the installation position and check whether the buckles 231 on both sides of the lower cover 22 are intact and securely installed.

[0030] Install the fixing components: Install the fixing bracket 31 into the designated position inside the lower cover 22, ensuring that the fixing bracket 31 is installed flat and firmly, and then attach the cushioning pad 32 to the inside of the fixing bracket 31.

[0031] Install the detector body: Pull the fixing plate 333 on the outside of the fixing bracket 31 outward to move the clamping plate 331 outward. Place the detector body 1 between the two clamping plates 331. Release the fixing plate 333. Under the action of the spring 334, the clamping plate 331 clamps and fixes the detector body 1. At the same time, arrange the cables between the modules of the detector body 1 and the cables connecting the detector body 1 to the external equipment through the cable routing holes 33 on the fixing bracket 31 to ensure that the cables are arranged neatly and without tangling.

[0032] Assemble the upper cover of the special shielding cover: Align the upper cover 21 with the lower cover 22, so that the locking block 232 on the upper cover 21 corresponds to the buckle 231 on the lower cover 22. Then flip the buckle 231 so that it engages with the locking block 232, thus completing the assembly of the upper cover 21 and the lower cover 22.

[0033] Inspection and debugging: After installation, check whether the connections of each part of the device are firm and tight, whether the detection body 1 is fixed and stable, and whether the cable layout is reasonable. Then, turn on the power supply module, start the detection device, and perform preliminary debugging to check whether the detector, signal processing module, and data transmission module are working properly and whether the detection data is accurate and stable.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply 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 process, method, article, or apparatus.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low background radiation detection device with a dedicated shielding cover, characterized in that, It includes a detection body (1), a special shielding cover (2), and a fixing component (3); the detection body (1) includes a detector, a signal processing module, a data transmission module, and a power supply module, wherein the detector is electrically connected to the signal processing module, the signal processing module is electrically connected to the data transmission module, and the power supply module supplies power to the detector, the signal processing module, and the data transmission module respectively; The special shielding cover (2) adopts a two-part splicing structure, including an upper cover (21), a lower cover (22) and a connector (23). The upper cover (21) and the lower cover (22) are connected by the connector (23). The connector (23) consists of two parts: a buckle (231) and a locking block (232). The buckle (231) is installed on both sides of the lower cover (22), and the locking block (232) is installed on the upper cover (21) at the corresponding position of the buckle (231). The buckle (231) and the locking block (232) are flipped and fastened together. The fixing component (3) includes a fixing bracket (31) and a buffer pad (32). The fixing bracket (31) is disposed between the inner shield (24) and the detection body (1). The buffer pad (32) is attached to the inner side of the fixing bracket (31). The fixing bracket (31) has several wiring holes (34).

2. The low background radiation detection device with a dedicated shielding cover according to claim 1, characterized in that: The upper cover (21) and the lower cover (22) are a double-layer nested structure, including an inner shield (24) and an outer shield (25). The inner shield (24) is wrapped around the outside of the detection body (1), and the outer shield (25) is wrapped around the outside of the inner shield (24).

3. A low background radiation detection device with a dedicated shielding cover according to claim 1, characterized in that: The upper cover (21) of the special shield (2) is provided with a detection window (211) corresponding to the detection end position of the detection body (1). A detachable shielding cover (212) is provided at the detection window (211). The material of the shielding cover (212) is the same as that of the inner shield (24).

4. A low background radiation detection device with a dedicated shielding cover according to claim 2, characterized in that: The outer surface of the outer shield (25) is provided with an antistatic coating, which is a polyimide coating.

5. A low background radiation detection device with a dedicated shielding cover according to claim 1, characterized in that: A vacuum layer (26) is provided between the inner shield (24) and the outer shield (25), and the thickness of the vacuum layer (26) is 2-3 mm.

6. A low background radiation detection device with a dedicated shielding cover according to claim 1, characterized in that: The fixing component (3) further includes a clamping member (33) disposed in the fixing bracket (31). The clamping member (33) includes a clamping plate (331) symmetrically disposed in the fixing bracket (31). A sliding rod (332) is installed on one side surface of the clamping plate (331). The sliding rod (332) passes through the fixing bracket (31) and is connected to the fixing plate (333) on the outside of the fixing bracket (31). A spring (334) is wound around the surface of the sliding rod (332). One end of the spring (334) is connected to the fixing plate (333), and the other end of the spring (334) is connected to the outer surface of the fixing bracket (31).

7. A low background radiation detection device with a dedicated shielding cover according to claim 6, characterized in that: A silicone pad (335) is provided on the side surface of the clamping plates (331) that are close to each other.

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