Detachable lead screen device for radiation operation of nuclear power station

Abstract

The utility model discloses a detachable lead screen device for nuclear power station radiation operation, which comprises a plurality of screen mechanisms, the adjacent screen mechanisms are connected through hinges, and each screen mechanism comprises a plurality of frame components, a plurality of anti-radiation lead sheaths and a walking component; each frame assembly is correspondingly and detachably connected with one anti-radiation lead sheath, and the walking assembly is connected with one frame assembly. According to the detachable lead screen device, due to the fact that the multiple screen mechanisms are arranged, and the adjacent screen mechanisms are connected through the hinges, multi-dimensional protection can be achieved, and the occupancy rate of operation space is reduced. Meanwhile, each frame assembly is correspondingly and detachably connected with one anti-radiation lead sheath, the function of disassembling the anti-radiation lead sheaths in real time can be achieved, the function of repeated use is added, the problem of how to treat site contamination is solved, meanwhile, the walking assemblies are arranged so that flexible movement of the detachable lead screen device can be guaranteed, and the practicability is high. And movement in multiple directions can be carried out.

Description

Technical Field

[0001] This utility model relates to the field of radiation operations in nuclear power plants, and in particular to a detachable lead screen device for radiation operations in nuclear power plants. Background Technology

[0002] Lead shields, as key radiation protection equipment, are widely used in medical radiology (such as DSA interventional surgery) and nuclear facility inspections. Especially in the field of gamma-ray protection in nuclear power plants, traditional lead shielding structures must meet the annual dose limits specified in standards. However, current mobile lead shields have the following technical shortcomings when used in nuclear industry settings:

[0003] 1. Insufficient adaptability to multi-source radiation fields: Nuclear power plants have multi-directional radiation sources (such as the circumferential radiation field of pressure vessels). Existing single-unit lead screens can only achieve single-plane protection, which requires the deployment of multiple independent screens on site, resulting in an increase in the occupancy rate of working space.

[0004] 2. Lack of modular compatibility: Existing lead shielding structures in nuclear power plants mostly use standard-sized lead sheets, while traditional screens use an integral lead plate welded structure, which cannot be quickly adapted to the lead materials stored on site. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a detachable lead screen device for radiation operations in nuclear power plants.

[0006] The technical solution adopted by this utility model to solve its technical problem is: to construct a detachable lead screen device for radiation operations in nuclear power plants, which includes multiple screen mechanisms, and adjacent screen mechanisms are connected by hinges.

[0007] Each of the screen mechanisms includes multiple frame components, multiple radiation-proof lead sheets, and a walking component; each frame component is detachably connected to one of the radiation-proof lead sheets, and the walking component is connected to one of the frame components.

[0008] In some embodiments, each of the frame components includes a horizontal connector, a vertical connector, and an intermediate connector, the intermediate connector being connected between the horizontal connector and the vertical connector;

[0009] The adjacent frame components are connected to the transverse connectors via the intermediate connector.

[0010] In some embodiments, the lateral connector is provided with a plurality of lateral connecting holes, the intermediate connector is provided with a plurality of first intermediate connecting holes and a plurality of second intermediate connecting holes corresponding to the lateral connecting holes, and the vertical connector is provided with a plurality of vertical connecting holes corresponding to the second intermediate connecting holes.

[0011] In some embodiments, each of the frame components includes four of the intermediate connectors.

[0012] In some embodiments, the frame assembly further includes a plurality of hooks and a plurality of spring hooks;

[0013] The hook is installed at the bottom of the transverse connector, and the end of the hook away from the transverse connector is detachably connected to the radiation-proof lead sheet.

[0014] The spring hook is installed on the inner wall of the vertical connector, and the end of the spring hook away from the vertical connector is detachably connected to the radiation-proof lead sheet.

[0015] In some embodiments, the frame assembly further includes a limiting member mounted on the vertical connector.

[0016] In some embodiments, the frame assembly further includes a handle mounted on the vertical connector.

[0017] In some embodiments, the handle is provided with anti-slip texture.

[0018] In some embodiments, the walking assembly includes a walking base plate connected to the intermediate connector and a plurality of omnidirectional wheels mounted on the bottom end of the walking base plate.

[0019] In some embodiments, the walking substrate is triangular in shape.

[0020] The present invention offers the following advantages: This detachable lead screen device, with multiple screen mechanisms connected by hinges, provides multi-dimensional protection and reduces workspace occupancy. Each frame component is detachably connected to a radiation-shielding lead sheet, enabling real-time removal and reusability, and solving the problem of handling on-site contamination. A walking mechanism ensures flexible movement of the detachable lead screen device in multiple directions. Furthermore, the gap width between adjacent screen mechanisms can be adjusted using different hinge specifications. Attached Figure Description

[0021] To more clearly illustrate the technical solution of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show some embodiments of this utility model and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort. In the drawings:

[0022] Figure 1 This is a first-direction overall structural diagram of the detachable lead screen device for radiation operations in a nuclear power plant according to this utility model.

[0023] Figure 2 This is a second-direction overall structural diagram of the detachable lead screen device for radiation work in a nuclear power plant according to this utility model.

[0024] Figure 3 yes Figure 1 Enlarged diagram of point A in the middle. Detailed Implementation

[0025] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or component referred to must have a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0026] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" 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. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0027] Reference Figures 1 to 3This invention relates to a detachable lead screen device for radiation work in a nuclear power plant, as described in some embodiments of the present invention. The device includes multiple screen mechanisms connected to adjacent screen mechanisms via hinges 4. Each screen mechanism includes multiple frame components 1, multiple radiation-shielding lead sheets 2, and a walking component 3. Each frame component 1 is detachably connected to one radiation-shielding lead sheet 2, and the walking component 3 is connected to one of the frame components 1.

[0028] Understandably, this detachable lead screen device, with its multiple screen mechanisms connected by hinges 4, provides multi-dimensional protection and reduces workspace occupancy. Each frame component 1 is detachably connected to a radiation-shielding lead sheet 2, allowing for real-time removal and reuse, and solving the problem of handling on-site contamination. Furthermore, a walking component 3 ensures flexible movement of the detachable lead screen device in multiple directions. Additionally, the gap width between adjacent screen mechanisms can be adjusted using different hinge specifications 4.

[0029] Each frame component 1 includes a horizontal connector 11, a vertical connector 12, and an intermediate connector 13, with the intermediate connector 13 connecting the horizontal connector 11 and the vertical connector 12. Adjacent frame components 1 are connected to the horizontal connector 11 via the intermediate connector 13. In this embodiment, both the horizontal connector 11 and the vertical connector 12 are I-beams, the intermediate connector 13 is a U-shaped component, and the frame component 1 is rectangular in shape. The horizontal connector 11 has multiple horizontal connecting holes 111, the intermediate connector 13 has multiple first intermediate connecting holes 131 and multiple second intermediate connecting holes 132 corresponding to the horizontal connecting holes 111, and the vertical connector 12 has multiple vertical connecting holes 121 corresponding to the second intermediate connecting holes 132. Understandably, due to the extreme weight of the radiation-shielding lead sheet 2, both the horizontal connector 11 and the vertical connector 12 are made of national standard I-beams to ensure they can support the weight of multiple radiation-shielding lead sheets 2. The horizontal connector 11 and the vertical connector 12 are connected by an intermediate connector 13, achieving a three-way composite connection and ensuring the integrity and stability of the frame assembly 1. High-strength bolts are used to connect the intermediate connector 13 to both the horizontal connector 11 and the vertical connector 12, with double-sided corner welding applied to key nodes. Each frame assembly 1 includes four intermediate connectors 13, specifically distributed at the four corners of the frame assembly 1 to ensure the stability of the connection. There are two vertical connectors 12, specifically distributed on the left and right sides of the frame assembly 1.

[0030] The frame assembly 1 also includes multiple hooks 14 and multiple spring hooks 15. The hooks 14 are installed at the bottom of the horizontal connector 11, with the end of the hook 14 away from the horizontal connector 11 detachably connected to the radiation-shielding lead sheet 2. The spring hooks 15 are installed on the inner wall of the vertical connector 12, with the end of the spring hook 15 away from the vertical connector 12 detachably connected to the radiation-shielding lead sheet 2. The hooks 14 can be load-bearing hooks, connected to the horizontal connector 11 by high-strength bolts, and can also be welded to ensure the stability of the connection between the hooks 14 and the horizontal connector 11. However, because the radiation-shielding lead sheet 2 has a large area, if only the hooks 14 are used for load bearing, the radiation-shielding lead sheet 2 may naturally fold, reducing its area. To reduce this, multiple spring hooks 15 are provided, installed on the inner wall of the vertical connector 12 (i.e., sideways installation of the spring hooks 15). The elastic force of the spring hooks 15 effectively suppresses wrinkling and deformation of the radiation-shielding lead sheet 2. The radiation-proof lead sheet 2 is detachably connected to the frame assembly 1, and can be removed and cleaned after the radiation-proof lead sheet 2 becomes dirty.

[0031] The frame assembly 1 also includes a limiting member 16 installed on the vertical connector 12. Understandably, since adjacent screen mechanisms may pose an instability risk during large-scale deployment, the limiting member 16 is provided to ensure that the screen mechanisms do not over-deploy, leading to a loss of center of gravity, or that the uneven ground at the nuclear power plant site does not cause the screen mechanisms to tip over. In this embodiment, the limiting member 16 is formed as a single piece of two structures, with the two structures tilted at an angle of 150 degrees to prevent the screen mechanism from deploying at an angle exceeding 150 degrees.

[0032] The frame assembly 1 also includes a handle 17 mounted on the vertical connector 12. The handle 17 is a stainless steel handle with a moderate installation height and anti-slip texture for easy manual operation.

[0033] The walking assembly 3 includes a walking base plate 31 connected to the intermediate connector 13 and multiple casters 32 mounted on the bottom of the walking base plate 31. The walking base plate 31 is triangular in shape. In this embodiment, the triangle is isosceles, and the casters 32 are equipped with brakes. Understandably, because the frame assembly 1 is extremely heavy, to ensure the overall stability of the frame assembly 1, the walking base plate 31 is designed as an isosceles triangle, and the casters 32 are moved inward to improve lateral stability. Simultaneously, the casters 32 can be connected to the walking base plate 31 using bolts and welding to ensure the stability of the casters 32. By cutting and removing redundant steel plates, the gap between adjacent screen mechanisms is reduced, thereby improving the radiation protection effect.

[0034] The specific installation process of this detachable lead screen device for nuclear power plant radiation operations is as follows: Holes are drilled in standard I-beams, and pre-drilled openings are made for the hooks 14 and spring hooks 15. Iron sheets are then fabricated. The hooks 14 and spring hooks 15 are bolted and welded to the I-beams. The intermediate connecting piece 13 is then used to weld the I-beams together to form a frame. A walking base plate 31 is welded to the intermediate connecting piece 13, and then the casters 32 are connected to the walking base plate 31. Finally, the limiting piece 16, handle 17, and hinge 4 are installed.

[0035] Before using the detachable lead shielding device for radiation work in nuclear power plants, check the overall stability of the frame assembly 1, the stability of the bolts on the frame assembly 1 and the integrity of the welds, the stability of the hook 14 and the spring hook 15, and the hinge 4 to ensure that no foreign objects will fall during movement. During use, first move the detachable lead shielding device to the test site, check the radiation hotspots on site, rotate it to the appropriate angle, check the radiation dose on site before use, and fix the casters 32 to ensure that there is no movement. Afterwards, hang the radiation-proof lead sheet 2 and check the radiation dose on the radiation-proof lead sheet 2.

[0036] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and multiple modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. A detachable lead screen device for radiation work in a nuclear power plant, characterized in that, It includes multiple screen mechanisms, and adjacent screen mechanisms are connected by hinges (4); Each of the screen mechanisms includes multiple frame components (1), multiple radiation-proof lead sheets (2), and a walking component (3); each frame component (1) is detachably connected to one of the radiation-proof lead sheets (2), and the walking component (3) is connected to one of the frame components (1).

2. The detachable lead screen device for radiation work in a nuclear power plant according to claim 1, characterized in that, Each of the frame components (1) includes a horizontal connector (11), a vertical connector (12) and an intermediate connector (13), the intermediate connector (13) being connected between the horizontal connector (11) and the vertical connector (12); The adjacent frame components (1) are connected to the transverse connectors (11) via the intermediate connector (13).

3. The detachable lead screen device for radiation work in a nuclear power plant according to claim 2, characterized in that, The horizontal connector (11) is provided with a plurality of horizontal connecting holes (111), the intermediate connector (13) is provided with a plurality of first intermediate connecting holes (131) and a plurality of second intermediate connecting holes (132) corresponding to the horizontal connecting holes (111), and the vertical connector (12) is provided with a plurality of vertical connecting holes (121) corresponding to the second intermediate connecting holes (132).

4. The detachable lead screen device for radiation work in a nuclear power plant according to claim 2, characterized in that, Each of the frame components (1) includes four of the intermediate connectors (13).

5. The detachable lead screen device for radiation work in a nuclear power plant according to claim 2, characterized in that, The frame assembly (1) also includes a plurality of hooks (14) and a plurality of spring hooks (15); The hook (14) is installed at the bottom of the transverse connector (11), and the end of the hook (14) away from the transverse connector (11) is detachably connected to the radiation shielding lead sheet (2); The spring hook (15) is installed on the inner wall of the vertical connector (12), and the end of the spring hook (15) away from the vertical connector (12) is detachably connected to the radiation shielding lead sheet (2).

6. The detachable lead screen device for radiation work in a nuclear power plant according to claim 2, characterized in that, The frame assembly (1) also includes a limiting member (16) mounted on the vertical connector (12).

7. The detachable lead screen device for radiation work in a nuclear power plant according to claim 2, characterized in that, The frame assembly (1) also includes a handle (17) mounted on the vertical connector (12).

8. The detachable lead screen device for radiation work in a nuclear power plant according to claim 7, characterized in that, The handle (17) is provided with anti-slip texture.

9. The detachable lead screen device for radiation work in a nuclear power plant according to claim 2, characterized in that, The walking assembly (3) includes a walking base plate (31) connected to the intermediate connector (13) and a plurality of casters (32) mounted on the bottom of the walking base plate (31).

10. The detachable lead screen device for radiation work in a nuclear power plant according to claim 9, characterized in that, The walking substrate (31) is triangular in shape.

Images