A high irradiation area target position detection structure
By employing a purely mechanical linkage structure and a stepped shielding design, the reliability and cost issues of target position detection under high radiation environments have been resolved, achieving low-cost, highly reliable target position detection and ensuring the safe operation 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
- 2025-08-11
- Publication Date
- 2026-07-03
AI Technical Summary
In nuclear power generation, the position detection of target components in high-irradiation environments requires the use of radiation-resistant sensors, which are costly, have low reliability, and are prone to damage to electronic components, making it difficult to achieve reliable position detection.
A purely mechanical linkage structure is used to transmit the target position signal to the low-irradiation area. The stepped fit between the shell and the shielding block blocks the leakage of radiation. The signal is transmitted to the sensor through mechanical transmission, avoiding direct radiation impact on the sensor.
It reduces detection costs, improves equipment reliability and sensor lifespan, ensures safe equipment operation, avoids sensor damage due to radiation, and achieves low-cost, high-reliability target position detection.
Smart Images
Figure CN224455754U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of nuclear waste treatment technology, specifically to a target position detection structure in a high-irradiation area. Background Technology
[0002] During nuclear power generation, the RIC integrated measurement component needs to be replaced every 36 months. When replacing this target component, it needs to be pulled out of the shelf, and a special automated equipment is used to pull out, bend and change its structural shape, so as to facilitate its shearing, shrinking and recycling storage.
[0003] During target processing, to ensure the overall reliable operation of the equipment, it is necessary to measure the target's position information during each relevant action to facilitate smooth operation of subsequent processes. Because the target is high-dose nuclear waste, conventional detection electronic components cannot be exposed to high-irradiation environments. Therefore, a reliable, purely mechanical structure must be designed to ensure reliable equipment operation.
[0004] The function of this structure is to detect the position of the target component, ensuring smooth connection between upstream and downstream processes and reliable overall operation of the automated equipment. By extending purely mechanical structural components deep into the equipment's shielding layer, and ensuring that the contact parts are radiation-resistant metal components, the reliability of position detection is guaranteed. Utility Model Content
[0005] The purpose of this invention is to provide a target position detection structure in a high-irradiation area to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a target position detection structure in a high-irradiation area, comprising a shielding shell, a connecting seat, and a shielding block, wherein the shielding block is inlaid on the left side of the interior and the right side of the connecting seat, a detection mechanism is provided on the connecting seat and the shielding block, and an assembly mechanism is provided on the shielding shell;
[0007] The detection mechanism includes a housing, which is fixedly connected to the top left side of the connecting seat. A sensor is fixedly connected to the right side of the shielding block, and a sensing rod is fixedly connected to the left side of the sensor. A return spring is fixedly connected to the left side of the shielding block, and a spring seat is fixedly connected to the other side of the return spring. An annular limiting boss is fixedly connected to the top of the inner wall of the housing. A pressure rod is sleeved on the inner ring of the annular limiting boss. A third transmission rod is hinged to the bottom of the pressure rod. A second transmission rod is hinged to the other side of the third transmission rod. A first transmission rod is hinged to the center of the back of the third transmission rod. The first transmission rod is hinged to the inner wall of the housing. When the target is in the set position, the sensor senses and transmits a signal to the control terminal for data transmission and control, and the subsequent process actions are started after the equipment is turned on.
[0008] Preferably, the reset spring is sleeved on the surface of the sensing rod and is located on the right side of the housing. The reset spring returns to its original position under its elastic force, and the reset distance is limited by the annular limiting boss on the pressure rod. At this point, the sensing rod separates from the sensor, and the subsequent processes of the equipment stop.
[0009] Preferably, the top of the housing has a through groove, and the surface of the pressure rod is inserted through the through groove on the top of the housing.
[0010] Preferably, the other side of the second transmission link is hinged to the left end of the spring seat, and an elongated slot is provided on the right side of the housing, through which the surface of the second transmission link is inserted.
[0011] Preferably, the assembly mechanism includes a fixed base, which is fixedly connected to both ends of the top of the shielding shell. The fixed base has an elongated groove inside, with openings on the front and rear sides of the groove. An elongated plate is inserted into the front and rear elongated grooves, and a rectangular groove is opened inside the elongated plate. A limiting seat is fixedly connected to the top of the fixed base, and a fixed rod is fixedly connected to the outer side of the front and rear limiting seats. A rotating plate is rotatably connected to the surface of the fixed rod. Nuts are fixedly connected to the front and rear sides of the elongated plate, and screws are threadedly connected to the nuts and the rotating plate.
[0012] Preferably, the top, bottom and outer sides of the rectangular grooves on the left and right sides are set as openings, and the surface of the rotating plate is inserted into the inside of the rectangular groove.
[0013] Preferably, the long plate has a through groove inside, and the surface of the screw is inserted through the through groove inside the long plate.
[0014] Compared with the prior art, this utility model provides a target position detection structure in a high-irradiation area, which has the following beneficial effects:
[0015] 1. This high-irradiation target position detection structure, through a detection mechanism, transmits the target position signal from the high-irradiation area to the low-irradiation area via a purely mechanical linkage structure. This protects the sensor from radiation interference, solving the problems of fragile electronic components, low reliability, and short lifespan in high-irradiation environments. Furthermore, it eliminates the need for expensive radiation-resistant sensors, significantly reducing costs. The stepped fit between the housing and the shielding block effectively blocks radiation leakage, ensuring safety. The linkage mechanism can also change its displacement direction to adapt to confined spaces. Overall, this structure achieves low-cost, high-reliability target position detection, ensuring smooth equipment operation.
[0016] 2. The target position detection structure in the high-irradiation area uses an assembly mechanism where a long plate is inserted into a long slot and a rotating plate is inserted into a rectangular slot. The nut and rotating plate are fixed by screws. The shielding shell can be set on the surface of the shielding block, which can prevent the shielding block from being directly exposed to the high-irradiation environment for a long time, which may lead to material performance degradation such as metal fatigue and reduced structural strength due to continuous radiation bombardment.
[0017] 3. This high-irradiation target position detection structure is designed to achieve low-cost, high-reliability target position detection in high-irradiation environments. By using a purely mechanical linkage structure, the sensing element is inserted deep into the high-irradiation environment. Displacement signals are transmitted out of the shielding layer via mechanical transmission. In low-irradiation areas, the sensor detects and transmits signals to the control terminal for data transmission and control. This solves the problems of fragile electronic components, low reliability, and short lifespan in high-irradiation environments. It is also more cost-effective than directly using radiation-resistant sensors. The stepped embedded module structure effectively shields against radiation leakage, ensuring environmental and personnel safety. Furthermore, the structure offers high reliability and long lifespan in radiation-resistant environments. Attached Figure Description
[0018] 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.
[0019] Figure 1 This is a perspective view of the overall structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the testing organization's structure;
[0021] Figure 3 This is a schematic cross-sectional view of the testing facility.
[0022] Figure 4 for Figure 3 A schematic diagram of the structure of the section cut out from the middle;
[0023] Figure 5 This is a schematic diagram of the cross-sectional structure of the testing mechanism's housing.
[0024] Figure 6 This is a schematic diagram of the right-side structure of the testing facility;
[0025] Figure 7 This is a schematic diagram of the assembly mechanism;
[0026] Figure 8 for Figure 7 Enlarged structural diagram at point A in the middle.
[0027] In the diagram: 1. Shielding shell; 2. Assembly mechanism; 21. Limiting seat; 22. Long plate; 23. Fixed seat; 24. Long slot; 25. Rectangular slot; 26. Screw; 27. Nut; 28. Rotating plate; 29. Fixed rod; 3. Detection mechanism; 31. Housing; 32. Sensing link; 33. Spring seat; 34. Return spring; 35. Sensor; 36. Pressure rod; 37. First transmission link; 38. Second transmission link; 39. Third transmission link; 301. Annular limiting boss; 4. Connecting seat; 5. Shielding block. 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] Combination Figures 1 to 6 A target position detection structure in a high-irradiation area includes a shielding shell 1, a connecting seat 4 and a shielding block 5. The shielding block 5 is embedded on the left side inside and the right side surface of the connecting seat 4. A detection mechanism 3 is provided on the connecting seat 4 and the shielding block 5. An assembly mechanism 2 is provided on the shielding shell 1.
[0033] The detection mechanism 3 includes a housing 31, which is fixedly connected to the top left side of the connecting seat 4. A sensor 35 is fixedly connected to the right side of the shielding block 5. A sensing rod 32 is fixedly connected to the left side of the sensor 35. A reset spring 34 is fixedly connected to the left side of the shielding block 5. A spring seat 33 is fixedly connected to the other side of the reset spring 34. An annular limiting boss 301 is fixedly connected to the top of the inner wall of the housing 31. A pressure rod 36 is sleeved in the inner ring of the annular limiting boss 301. A third transmission rod 39 is hinged to the bottom of the pressure rod 36. A second transmission rod 38 is hinged to the other side of the third transmission rod 39. A first transmission rod 37 is hinged to the center of the back of the third transmission rod 39. The first transmission rod 37 is hinged to the inner wall of the housing 31.
[0034] The reset spring 34 is sleeved on the surface of the sensing link 32. The reset spring 34 is located on the right side of the housing 31. A through slot is provided on the top of the housing 31. The surface of the pressure rod 36 is inserted through the through slot provided on the top of the housing 31. The other side of the second transmission link 38 is hinged to the left end of the spring seat 33. A long hole slot is provided on the right side of the housing 31. The surface of the second transmission link 38 is inserted through the long hole slot provided on the right side of the housing 31.
[0035] Furthermore, the detection mechanism uses a purely mechanical linkage structure to transmit the position signal of the target in the high-irradiation area to the low-irradiation area, thus protecting the sensor from radiation interference. This solves the problems of fragile electronic components, low reliability, and short lifespan in high-irradiation environments. At the same time, it eliminates the need for expensive radiation-resistant sensors, significantly reducing costs. The stepped fit between the housing and the shielding block effectively blocks radiation leakage, ensuring safety. Moreover, the linkage mechanism can change the displacement direction to adapt to confined spaces. Overall, it achieves low-cost, high-reliability target position detection, ensuring smooth operation of the equipment.
[0036] Example 2
[0037] See Figure 1-8 Furthermore, based on Embodiment 1, the assembly mechanism 2 further includes a fixed base 23, which is fixedly connected to the top two ends of the shielding shell 1. The fixed base 23 has an elongated groove 24 inside, with openings on the front and rear sides of the elongated groove 24. An elongated plate 22 is inserted into the two elongated grooves 24, and a rectangular groove 25 is opened inside the elongated plate 22. A limiting seat 21 is fixedly connected to the top of the fixed base 23. A fixed rod 29 is fixedly connected to the outer side of the two limiting seats 21. A rotating plate 28 is rotatably connected to the surface of the fixed rod 29. Nuts 27 are fixedly connected to the front and rear sides of the elongated plate 22 respectively. A screw 26 is threadedly connected to the nut 27 and the rotating plate 28.
[0038] The top, bottom and outer sides of the rectangular grooves 25 on both sides are set as openings. The surface of the rotating plate 28 is inserted into the inside of the rectangular groove 25. The inside of the long plate 22 is provided with a through groove. The surface of the screw 26 is inserted through the through groove provided inside the long plate 22.
[0039] Furthermore, the long plate 22 is inserted into the long slot 24, and the rotating plate 28 is inserted into the rectangular slot 25. The nut 27 and the rotating plate 28 are threadedly fixed by the screw 26. The shielding shell 1 can be set on the surface of the shielding block 5, which can prevent the shielding block 5 from being directly exposed to a high radiation environment for a long time, which may lead to material performance deterioration such as metal fatigue and reduced structural strength due to continuous radiation bombardment.
[0040] The technical problem that the testing agency needs to solve is
[0041] Improving the reliability and lifespan of the detection module: Since the target is highly radioactive nuclear waste, the position detection sensor used during target processing must be exposed to high radiation for extended periods, leading to reduced sensor reliability and increased susceptibility to damage. This structure uses a linkage mechanism to transmit the target position signal out of the high-radiation area, protecting the sensor from radiation interference and damage, thus increasing the reliability of the detection module and extending its lifespan.
[0042] Safety of equipment use: The detection module passes through the equipment's shielding layer. Through the stepped structure design of the housing and signal transmission rod, it forms an effective structure to prevent radiation leakage together with the shielding layer, ensuring the safety of the external environment and personnel, and reducing the risk of use.
[0043] Reduced space utilization and reliable information transmission: Through a linkage and reset structure, when the target approaches the detection module, the linkage mechanism extends, allowing external sensors to sense and transmit signals to the control terminal for data transmission and control. The purely mechanical linkage mechanism design improves signal transmission reliability and reduces structural space and optimizes equipment size by changing the displacement direction.
[0044] Cost reduction: Since the target is highly radioactive nuclear waste, using radiation-resistant sensors for detection and control inside the equipment shielding layer is costly and inefficient. Using a purely mechanical structure to transmit displacement information greatly reduces costs.
[0045] In actual operation, when this device is used, the detection mechanism 3 realizes the transmission and detection of the target position signal in the high-irradiation area through a pure mechanical linkage transmission and elastic reset mechanism. The specific process is as follows: When the target contacts during the signal triggering stage, when the target moves to the set position and contacts the pressure rod 36, the target applies a pushing force to the pressure rod 36. This force overcomes the pre-tightening force of the reset spring 34 and pushes the pressure rod 36 into the housing 31. The pressure rod 36 drives the first transmission linkage 37 to rotate through the hinge structure, and then drives the second transmission linkage 38 and the third transmission linkage 39 in sequence, and finally pushes the sensing linkage 32 closer to the sensor 35 in the low-irradiation area.
[0046] When the target reaches the preset detection position, the distance between the sensing link 32 and the sensor 35 reaches the sensing threshold. The sensor 35 triggers a signal and transmits it to the control terminal to start the subsequent process operation.
[0047] During the target separation phase of the reset process, once the target leaves the pressure rod 36, the spring force of the reset spring 34 is released, pushing the pressure rod 36 to move in the opposite direction. Simultaneously, the linkage mechanism drives the first transmission link 37, the second transmission link 38, the third transmission link 39, and the sensing link 32 to reset. The annular limiting boss 301 on the pressure rod 36 abuts against the inner wall of the housing 31, limiting the reset distance and ensuring that each component returns to its initial position. At this time, the sensing link 32 separates from the sensor 35, the sensor 35 stops outputting signals, and the subsequent process terminates.
[0048] When the two shielding shells 1 are placed on the front and rear surfaces of the shielding block 5, the long plate 22 is inserted into the long groove 24, and the rotating plate 28 is rotated on the surface of the fixed rod 29 until the rotating plate 28 is inserted into the rectangular groove 25. The nut 27 and the rotating plate 28 are threadedly fixed by the screw 26. The shielding shells 1 can be placed on the surface of the shielding block 5, which can prevent the shielding block 5 from being directly exposed to a high radiation environment for a long time, which may lead to material performance degradation such as metal fatigue and reduced structural strength due to continuous radiation bombardment.
[0049] 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 high radiation zone target position detection structure comprising a shielding housing (1), a connecting seat (4) and a shielding block (5), characterized in that: The shielding block (5) is inlaid on the left side inside and the right side surface of the connecting seat (4). The connecting seat (4) and the shielding block (5) are provided with a detection mechanism (3). The shielding shell (1) is provided with an assembly mechanism (2). The detection mechanism (3) includes a housing (31), which is fixedly connected to the top left side of the connecting seat (4). A sensor (35) is fixedly connected to the right side of the shielding block (5), and a sensing rod (32) is fixedly connected to the left side of the sensor (35). A reset spring (34) is fixedly connected to the left side of the shielding block (5), and a spring seat (33) is fixedly connected to the other side of the reset spring (34). An annular limiting boss (301) is fixedly connected to the top of the inner wall of the housing (31). A pressure rod (36) is sleeved in the inner ring of the annular limiting boss (301). A third transmission link (39) is hinged to the bottom of the pressure rod (36). A second transmission link (38) is hinged to the other side of the third transmission link (39). A first transmission link (37) is hinged to the center of the back of the third transmission link (39). The first transmission link (37) is hinged to the inner wall of the housing (31).
2. The high flux zone target position detection structure of claim 1, wherein: The reset spring (34) is sleeved on the surface of the sensing link (32), and the reset spring (34) is located on the right side of the housing (31).
3. The high flux zone target position detection structure of claim 1, wherein: The top of the housing (31) is provided with a through groove, and the surface of the pressure rod (36) is inserted through the through groove on the top of the housing (31).
4. The high flux zone target position detection structure of claim 1, wherein: The other side of the second transmission link (38) is hinged to the left end of the spring seat (33). The right side of the housing (31) has an elongated slot, and the surface of the second transmission link (38) is inserted through the elongated slot on the right side of the housing (31).
5. The high flux zone target position detection structure of claim 1, wherein: The assembly mechanism (2) includes a fixed seat (23), which is fixedly connected to the top two ends of the shielding shell (1). The fixed seat (23) has an elongated groove (24) inside, and the front and rear sides of the elongated groove (24) are set as openings. A long plate (22) is inserted into the front and rear elongated grooves (24). A rectangular groove (25) is opened inside the long plate (22). A limiting seat (21) is fixedly connected to the top of the fixed seat (23). A fixing rod (29) is fixedly connected to the outer side of the front and rear limiting seats (21). A rotating plate (28) is rotatably connected to the surface of the fixing rod (29). Nuts (27) are fixedly connected to the front and rear sides of the long plate (22). A screw (26) is threadedly connected to the nut (27) and the rotating plate (28).
6. The target position detection structure in a high-irradiation area according to claim 5, characterized in that: The top, bottom and outer sides of the rectangular grooves (25) on the left and right sides are set as openings, and the surface of the rotating plate (28) is inserted into the inside of the rectangular grooves (25).
7. A high flux zone target position detection structure as defined in claim 5, wherein: The long plate (22) has a through groove inside, and the screw (26) is inserted through the through groove inside the long plate (22) on its surface.