A distance detection structure in a high-radiation enclosed environment
By employing a purely mechanical distance detection device in a high-radiation environment, the problem of easily damaged electronic components has been solved, enabling stable detection and safe replacement, reducing costs, and improving the service life and safety of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA URUMQI XIANCHU NUCLEAR ENERGY TECH CO LTD
- Filing Date
- 2025-08-06
- Publication Date
- 2026-07-03
AI Technical Summary
In high-radiation environments, conventional electronic components are easily damaged, leading to equipment instability. Furthermore, the replacement process is dangerous and costly, making it difficult to achieve accurate length and position detection in high-radiation environments.
The distance detection device employs a purely mechanical structure, including radiation-resistant metal components such as sliding parts, guide rods, bearings, and compression springs. Combined with a shielding mechanism, it utilizes a magnetic grating detector for detection, thus preventing electronic components from directly contacting high radiation levels.
It enables stable detection in high-radiation environments, extends device lifespan, reduces costs, simplifies replacement procedures, improves safety and work efficiency, and avoids radiation exposure for personnel.
Smart Images
Figure CN224455684U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of distance detection technology in enclosed environments, specifically a distance detection structure for high-radiation enclosed environments. Background Technology
[0002] In the field of nuclear power generation, the RIC integrated measurement module needs to be replaced every 36 months. The instrument tubes of the neutron measurement module and the water level measurement module in this module are high-dose nuclear waste. During the treatment process, the high-level and low-level radioactive sections need to be separated, and the high-level radioactive section needs to be sheared and reduced in volume for subsequent processing and storage.
[0003] During this shearing and volume reduction process, it is necessary to accurately measure the shearing length and position information of the pipe fittings, while ensuring that the shearing length can be set arbitrarily within a certain range. However, conventional length and distance detection electronic components cannot directly contact the high-dose instrument tubes. This is because electronic components are exposed to high radiation environments for a long time, which can easily lead to instability and damage, and may cause uncontrollable accidents to occur in the entire equipment.
[0004] If radiation-resistant electronic length and distance detection elements are directly exposed to high-level radioactive contaminants, not only will the cost of purchasing the elements be high and the economic efficiency low, but the service life of radiation-resistant electronic elements will be much shorter than that of radiation-resistant purely mechanical products depending on the dose. In addition, when electronic elements age and are damaged, the convenience and safety of the replacement process are difficult to guarantee, and personnel may face the risk of exposure to radioactive contaminants.
[0005] Therefore, to ensure the reliability and durability of the shearing process, it is necessary to design a distance detection structure in a high-radiation enclosed environment, which should be inserted into the shielding body to ensure that the components in contact with nuclear waste are radiation-resistant metal structural parts, thereby achieving reliable and durable position and length detection. Utility Model Content
[0006] The purpose of this invention is to provide a distance detection structure for a high-radiation enclosed environment to solve the problems mentioned in the background art.
[0007] To achieve the above objectives, this utility model provides the following technical solution: a distance detection structure in a high-radiation enclosed environment, including an end limiting member, a detection mechanism is provided on the right side of the end limiting member, and a shielding mechanism is provided around the detection mechanism;
[0008] The detection mechanism includes a sliding main body, which is fixedly connected to the right side of the end limiting member. A sliding component is slidably connected inside the sliding main body, and a fixing component is fixedly connected to the rear side of the sliding component. A bearing is fixedly connected to the inner side of the fixing component, and the bearing is slidably connected inside the sliding main body. A guide rod is fixedly connected to the right side of the fixing component, and the guide rod is slidably connected to the inside of the sliding main body. A copper sleeve is slidably connected to the right side of the guide rod, and the copper sleeve is disposed inside the shielding mechanism. A fixed outer flange is slidably connected to the right side of the guide rod, and a magnetic grating detector is fixedly connected to the right side of the fixed outer flange. A compression spring is sleeved around the guide rod, and a magnetic strip is fixedly connected to the rear side of the guide rod.
[0009] Preferably, the sliding body has a groove inside, and the sliding component is slidably connected in the groove, so that the groove can limit the sliding component and prevent it from swinging during linear movement, thus ensuring the stability of each test.
[0010] Preferably, a limiting groove is formed inside the sliding main body, and the bearing is slidably connected to the limiting groove, so that the limiting groove can limit the bearing, ensure linear movement during operation, and restrict the degree of freedom in other directions.
[0011] Preferably, the left side of the compression spring is fixedly connected to the right side of the fixing member, and the right side of the compression spring is fixedly connected to the left side of the copper sleeve, so that the sliding member can be smoothly compressed when subjected to external force and can be freely reset after the external force is released.
[0012] Preferably, the magnetic strip is located in front of the magnetic grating detector. When the magnetic grating detector detects the value of the magnetic strip position, it completes the detection and transmission of the change in length and distance information through internal logic.
[0013] Preferably, the shielding mechanism includes a step, which is fixedly connected to the left side of the fixed outer flange, and slidably connected to the periphery of the guide rod. Two steps are fixedly connected to the left side of the first step, and three steps are fixedly connected to the inner left side of the two steps. The three steps are fixedly connected to the right side of the sliding main body and the periphery of the copper sleeve.
[0014] Compared with the prior art, this utility model provides a distance detection structure for a high-radiation enclosed environment, which has the following beneficial effects:
[0015] 1. The distance detection structure within this high-radiation enclosed environment utilizes a purely mechanical structure, including radiation-resistant metal components such as sliding parts, guide rods, bearings, and compression springs. This avoids the problems of electronic components being susceptible to interference, instability, and damage in high-radiation environments, ensuring long-term stable operation of the detection work. The mechanical structure has stronger radiation resistance and anti-aging properties, significantly extending its service life compared to radiation-resistant electronic components. This reduces equipment failures caused by component damage and guarantees the long-term reliability of the detection function. Instead of using expensive radiation-resistant electronic detection components, ordinary electronic detection components, such as magnetic grid detectors, are installed outside the shield, significantly reducing component procurement costs. Easily damaged electronic components are installed outside the shield, allowing personnel to replace them directly from the outside when they age or fail, without needing to enter the high-radiation enclosed environment. This simplifies the replacement process, improves efficiency, and eliminates the risk of radiation exposure for personnel during replacement, ensuring their safety.
[0016] 2. The distance detection structure in this high-radiation enclosed environment, through the setting of a shielding mechanism and the setting of multiple stepped shielding components, enhances the shielding effect against internal radiation by using one-step, two-step, and three-step steps, ensuring that external electronic components are not affected by radiation, while also ensuring the airtightness of the structure. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in 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 only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0019] Figure 2 This is a schematic diagram of the rear view structure of this utility model;
[0020] Figure 3 This is a schematic diagram of the testing mechanism.
[0021] Figure 4 This is a schematic diagram of the internal structure of the sliding main body component;
[0022] Figure 5 This is a schematic diagram of the rear structure of the sliding component;
[0023] Figure 6 This is a schematic diagram of the outer structure of the guide rod;
[0024] Figure 7 This is a schematic diagram of the rear structure of the guide rod;
[0025] Figure 8 This is a cross-sectional structural diagram of the sliding main body component;
[0026] Figure 9 This is a schematic diagram of the shielding mechanism.
[0027] In the diagram: 1. End limiting component; 2. Detection mechanism; 3. Shielding mechanism; 21. Sliding main body component; 22. Sliding component; 23. Copper sleeve; 24. Guide rod; 25. Fixed outer flange; 26. Magnetic grid detector; 27. Compression spring; 28. Fixing component; 29. Bearing; 291. Magnetic strip; 31. First-section step; 32. Second-section step; 33. Third-section step. 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, 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.
[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0030] This utility model provides the following technical solution:
[0031] Example 1
[0032] Please see Figure 1-9 This utility model provides a technical solution: a distance detection structure in a high-radiation enclosed environment, including an end limiting member 1, a detection mechanism 2 on the right side of the end limiting member 1, and a shielding mechanism 3 around the detection mechanism 2;
[0033] The detection mechanism 2 includes a sliding main body 21, which is fixedly connected to the right side of the end limiting member 1. A sliding member 22 is slidably connected inside the sliding main body 21. A fixing member 28 is fixedly connected to the rear side of the sliding member 22. A bearing 29 is fixedly connected to the inner side of the fixing member 28. The bearing 29 is slidably connected inside the sliding main body 21. A guide rod 24 is fixedly connected to the right side of the fixing member 28. The guide rod 24 is slidably connected to the inside of the sliding main body 21. A copper sleeve 23 is slidably connected to the right side of the guide rod 24. The copper sleeve 23 is set inside the shielding mechanism 3. A fixed outer flange 25 is slidably connected to the right side of the guide rod 24. A magnetic grid detector 26 is fixedly connected to the right side of the fixed outer flange 25. A compression spring 27 is sleeved around the guide rod 24. A magnetic strip 291 is fixedly connected to the rear side of the guide rod 24.
[0034] The sliding body 21 has a groove inside, and the sliding part 22 is slidably connected in the groove. The groove can limit the sliding part 22, prevent it from swinging during linear movement, and ensure the stability of each test.
[0035] The sliding main body 21 has a limiting groove inside, and the bearing 29 is slidably connected to the limiting groove on the outside, so that the limiting groove can limit the bearing 29, ensuring linear movement during operation and restricting the degree of freedom in other directions.
[0036] The left side of the compression spring 27 is fixedly connected to the right side of the fixing member 28, and the right side of the compression spring 27 is fixedly connected to the left side of the copper sleeve 23, so that the sliding member 22 can be smoothly compressed when subjected to external force and can be freely reset after the external force is released.
[0037] The magnetic strip 291 is located in front of the magnetic grating detector 26. When the magnetic grating detector 26 detects the position value of the magnetic strip 291, it completes the detection and transmission of the change in length and distance information through internal logic.
[0038] Example 2
[0039] Please see Figure 1-9 Furthermore, based on Embodiment 1, the shielding mechanism 3 further includes a step 31, which is fixedly connected to the left side of the fixed outer flange 25, and is slidably connected to the periphery of the guide rod 24. A second step 32 is fixedly connected to the left side of the first step 31, and a third step 33 is fixedly connected to the left side of the second step 32. The third step 33 is fixedly connected to the right side of the sliding main body 21 and the periphery of the copper sleeve 23.
[0040] In actual operation, when this device is used, when the external pipe is conveyed to the left side of the sliding member 22 in this structure under the action of external force, when the pipe head comes into contact with the sliding member 22, the sliding member 22 will slide inside the sliding body 21 under the squeezing action of the external force of the pipe. And through the fixing member 28, the bearing 29 will slide inside the sliding body 21. This will cause the fixing member 28 to drive the guide rod 24 to slide inside the sliding body 21, the copper sleeve 23 and the fixed outer flange 25, making linear motion. This will also cause the compression spring 27 to be compressed. When the guide rod 24 moves, it will drive the magnetic strip 291 to move. The magnetic strip 291 is located in front of the magnetic grating detector 26. When the magnetic grating detector 26 detects the value of the position of the magnetic strip 291, it will complete the detection and transmission of the change length and distance information through internal logic.
[0041] When the external force is released from the conveying force on the pipe fitting, it is in the state of unloading external force. The compression spring 27 is released and reset, which can drive the guide rod 24, the fixing part 28, the bearing 29 and the sliding part 22 back to the initial position. When the pipe fitting is subjected to external force again, it will perform a cycle action to continue the detection work.
[0042] The shielding effect against internal radiation is enhanced by the first step 31, the second step 32, and the third step 33, ensuring that external electronic components are not affected by radiation, while also guaranteeing the airtightness of the structure.
[0043] In this application, the magnetic grating detector 26 needs to be connected to an external control terminal device to transmit data.
[0044] 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
Claims
1. A distance detection structure in a high radiation closed environment, comprising a head limiting member (1), characterized in that: The end limiting member (1) is provided with a detection mechanism (2) on the right side, and a shielding mechanism (3) is provided around the detection mechanism (2). The detection mechanism (2) includes a sliding main body (21), which is fixedly connected to the right side of the end limiting member (1). A sliding member (22) is slidably connected inside the sliding main body (21). A fixing member (28) is fixedly connected to the rear side of the sliding member (22). A bearing (29) is fixedly connected to the inner side of the fixing member (28). The bearing (29) is slidably connected inside the sliding main body (21). A guide rod (24) is fixedly connected to the right side of the fixing member (28). The guide rod (24) is slidably connected inside the sliding body (21). A copper sleeve (23) is slidably connected to the right side of the guide rod (24). The copper sleeve (23) is set inside the shielding mechanism (3). A fixed outer flange (25) is slidably connected to the right side of the guide rod (24). A magnetic grating detector (26) is fixedly connected to the right side of the fixed outer flange (25). A compression spring (27) is sleeved around the guide rod (24). A magnetic strip (291) is fixedly connected to the rear side of the guide rod (24).
2. The distance detection structure in a high-radiation enclosed environment according to claim 1, characterized in that: The sliding body (21) has a sliding groove inside, and the sliding member (22) is slidably connected in the sliding groove.
3. The distance detection structure in a high-radiation enclosed environment according to claim 1, wherein: The sliding main body (21) has a limiting groove inside, and the bearing (29) is slidably connected to the limiting groove on the periphery.
4. The distance detection structure in a high-radiation enclosed environment according to claim 1, wherein: The left side of the compression spring (27) is fixedly connected to the right side of the fixing member (28), and the right side of the compression spring (27) is fixedly connected to the left side of the copper sleeve (23).
5. The distance detection structure in a high-radiation enclosed environment according to claim 1, wherein: The magnetic strip (291) is located in front of the magnetic grating detector (26).
6. The distance detection structure in a high-radiation enclosed environment according to claim 1, wherein: The shielding mechanism (3) includes a step (31), which is fixedly connected to the left side of the fixed outer flange (25). The step (31) is slidably connected to the periphery of the guide rod (24). Two steps (32) are fixedly connected to the left side of the step (31). Three steps (33) are fixedly connected to the left side of the two steps (32). The three steps (33) are fixedly connected to the right side of the sliding main body (21) and the periphery of the copper sleeve (23).