Quick dismounting device for counter bore wire-carrying screw rod in high-radiation area of nuclear power plant
By designing a quick-release device for countersunk threaded screws in high-radiation areas of nuclear power plants, the device utilizes the connecting components of the inner and outer sleeves to achieve rapid assembly and disassembly of the screws. This solves the problem of difficult assembly and disassembly of screws in high-radiation areas, reduces personnel radiation exposure time, and improves safety.
Patent Information
- Application Number
- CN202520371566.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-04
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-03-04
AI Technical Summary
In high-radiation areas of nuclear power plants, when the screw head is not machined into a flat end or is insufficient in length, conventional tools cannot be used to disassemble or assemble the screw, making manual operation difficult and increasing the risk of personnel being exposed to radiation.
Design a quick-release device for countersunk threaded screws in high-radiation areas of nuclear power plants, including an inner sleeve, an outer sleeve, fasteners, and connecting components. The inner sleeve and outer sleeve are made of non-metallic soft materials, and the connecting components enable quick assembly and disassembly of the screw.
This improved the efficiency of screw assembly and disassembly in high-radiation areas, reduced the radiation exposure time of workers, and ensured the health and safety of workers.
Smart Images
Figure CN223790390U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of nuclear power technology, and in particular to a quick-release device for a countersunk hole wire-carrying screw in a high-radiation zone of a nuclear power plant. Background Technology
[0002] In the high-radiation areas of nuclear power plants, some fully threaded screws (studs) cannot be screwed into or out of threaded holes without a flattened end, making it impossible to use tools such as wrenches. When the screw (stud) length is insufficient and double nuts cannot be used for assembly or disassembly, workers have to operate by hand. When the number of screws is large or the diameter of the screws (studs) is large, manual operation is difficult. If workers stay in the high-radiation areas of nuclear power plants for extended periods, they are susceptible to radiation exposure. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a quick-release device for countersunk wire-carrying screws in high-radiation areas of nuclear power plants.
[0004] The technical solution adopted by this utility model to solve its technical problem is: to construct a quick-release device for countersunk wire-carrying screws in high-radiation areas of nuclear power plants, including an inner sleeve, an outer sleeve, fasteners, and connecting components;
[0005] The inner sleeve is a tubular structure that extends through both ends. The inner sleeve is used to be fitted onto the countersunk wire carrier screw in the high radiation zone of a nuclear power plant. The circumferential sidewall of the inner sleeve is also provided with at least one first through groove. The first through groove extends along the axial direction of the inner sleeve and the lower end of the first through groove extends to the lower end of the inner sleeve. The circumferential sidewall of the inner sleeve is also provided with several first connecting holes.
[0006] The outer sleeve is a cylindrical structure, used to fit onto the inner sleeve. The outer sleeve includes a top wall and a peripheral wall connected to the top wall. The top wall has a connecting portion for connecting to the operating component. The peripheral wall has at least one second through groove, which extends axially along the outer sleeve and extends to the lower end of the outer sleeve. The circumferential sidewall of the outer sleeve also has a plurality of second connecting holes. The first connecting holes and the second connecting holes are connected by fasteners.
[0007] The peripheral wall is provided with a first fixing part and a second fixing part on both sides of the second through groove, and the connecting assembly is used to connect the first fixing part and the second fixing part.
[0008] In some embodiments, the inner sleeve is made of a non-metallic soft material.
[0009] In some embodiments, the number of the first through slots is two, and the two first through slots are symmetrically arranged along the axis of the inner sleeve.
[0010] In some embodiments, the thickness of the inner sleeve is 2-6 mm.
[0011] In some embodiments, the inner diameter of the inner sleeve is 0.1 mm larger than the outer diameter of the countersunk screw in the high-radiation zone of the nuclear power plant, and the outer diameter of the inner sleeve is 0.1 mm smaller than the inner diameter of the outer sleeve.
[0012] In some embodiments, the number of the second through slots is two, and the two second through slots are symmetrically arranged along the axis of the outer sleeve.
[0013] In some embodiments, the peripheral wall is further provided with a third through groove communicating with the second through groove, and the third through groove extends along the circumferential direction of the peripheral wall.
[0014] In some embodiments, the connecting assembly includes a connecting screw and a fastening nut, the connecting screw passing through the first fixing part and the second fixing part and being fastened by the fastening nut.
[0015] In some embodiments, the connecting portion includes a hexagonal nut.
[0016] In some embodiments, the outer casing is a metal component.
[0017] The present invention has the following beneficial effects: the use of this quick-release device for countersunk wire-carrying screws in high-radiation areas of nuclear power plants can effectively improve the disassembly and assembly efficiency of countersunk wire-carrying screws in high-radiation areas of nuclear power plants, effectively reduce the time spent by staff, significantly reduce the radiation dose to staff, and ensure the health and safety of staff. Attached Figure Description
[0018] 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:
[0019] Figure 1 This is a schematic diagram illustrating the application of the quick-release device for countersunk wire-carrying screws in high-radiation zones of nuclear power plants in some embodiments of this utility model.
[0020] Figures 2 to 4 This is a schematic diagram of the inner sleeve in some embodiments of this utility model;
[0021] Figures 5 to 7 This is a schematic diagram of the outer shell structure in some embodiments of this utility model;
[0022] Figures 8 to 9 This is a schematic diagram of the parameters of the inner sleeve in some embodiments of this utility model;
[0023] Figures 10 to 12 This is a schematic diagram of the parameters of the outer shell in some embodiments of this utility model. Detailed Implementation
[0024] 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.
[0025] 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.
[0026] In the following description, specific details such as particular system structures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
[0027] See Figures 1 to 12As shown, this utility model illustrates a quick-release device for countersunk wire-carrying screws in high-radiation areas of nuclear power plants. It can be used when quick disassembly and reassembly of wire-carrying screws (columns) are required, such as the disassembly and reassembly of wire-carrying valves in low-low water level valves in high-dose areas of nuclear power plants.
[0028] The quick-release device for countersunk wire-carrying screws in the high-radiation zone of the nuclear power plant includes an inner sleeve 10, an outer sleeve 20, fasteners 30, and connecting components 40.
[0029] The inner sleeve 10 is a tubular structure with both ends extending through it, and can be a circular tube structure. The inner sleeve 10 is used to fit onto the countersunk wire-carrying screw 100 in the high-radiation zone of a nuclear power plant. The circumferential sidewall of the inner sleeve 10 is also provided with at least one first through groove 11. The first through groove 11 is an elongated groove that extends axially along the inner sleeve 10, with its lower end extending to the lower end of the inner sleeve 10. The first through groove 11 can be used to absorb deformation of the retracted / extended connection assembly 40. The circumferential sidewall of the inner sleeve 10 is also provided with several first connecting holes 12. These first connecting holes 12 can be spaced apart along the circumferential sidewall of the inner sleeve 10. Preferably, the number of first connecting holes 12 can be four, and the four first connecting holes 12 can be arranged axially symmetrically (e.g., ...). Figure 4 (As shown).
[0030] The outer sleeve 20 has a cylindrical structure, which can be approximately circular. It is fitted onto the inner sleeve 10. The outer sleeve 20 includes a top wall 21 and a peripheral wall 22 connected to the top wall 21. The top wall 21 has a connecting portion 23 for connection with the operating component. The peripheral wall 22 has at least one second through groove 221, which is an elongated groove extending axially along the outer sleeve 20, with its lower end extending to the lower end of the outer sleeve 20. The circumferential sidewalls of the outer sleeve 20 also have several second connecting holes 223. The first connecting hole 12 and the second connecting hole 223 are connected by fasteners 30. The fasteners 30 include rivets, such as 3.0mm rivets.
[0031] The peripheral wall 22 is provided with a first fixing part 24 and a second fixing part 25 on both sides of the second through groove 221. The connecting assembly 40 is used to connect the first fixing part 24 and the second fixing part 25, so that the inner sleeve 10 and the outer sleeve 20 clamp the countersunk wire carrier screw 100 in the high radiation zone of the nuclear power plant.
[0032] In some embodiments, the inner sleeve 10 is made of a non-metallic soft material, such as polyamide. Of course, the inner sleeve 10 can also be made of other non-metallic soft materials, which are not specifically limited here. The use of a non-metallic soft material for the inner sleeve 10 can effectively protect the threads of the countersunk thread carrier screw 100 in the high-radiation area of a nuclear power plant from damage.
[0033] In some embodiments, there are two first through slots 11, and the two first through slots 11 are symmetrically arranged along the axis of the inner sleeve 10.
[0034] In some embodiments, the thickness of the inner sleeve 10 is 2-6 mm, for example, it can be 2.0 mm, 2.1 mm, 2.2 mm, 2.3 mm, 2.4 mm, 2.5 mm, 2.6 mm, 2.7 mm, 2.8 mm, 2.9 mm, 3.0 mm, 4.1 mm, 4.2 mm, 4.3 mm, 4.4 mm, 4.5 mm, 4.6 mm, 4.7 mm, 4.8 mm, 4.9 mm, 5.0 mm, 5.1 mm, 5.2 mm, 5.3 mm, 5.4 mm, 5.5 mm, 5.6 mm, 5.7 mm, 5.8 mm, 5.9 mm, or 6.0 mm. Preferably, the thickness of the inner sleeve 10 is 2.0 mm, or the thickness of the inner sleeve 10 is 6.0 mm. In some embodiments, the inner diameter of the inner sleeve 10 is 52 mm and the outer diameter is 58 mm. The axial length of the inner sleeve 10 is 53 mm. The first connecting hole 12 can be a circular hole with an inner diameter of 3.1 mm.
[0035] In some embodiments, the inner diameter of the inner sleeve 10 is 0.1 mm larger than the outer diameter of the countersunk wire carrier screw 100 in the high-radiation zone of the nuclear power plant, and the outer diameter of the inner sleeve 10 is 0.1 mm smaller than the inner diameter of the outer sleeve 20. Of course, the dimensions of the inner sleeve 10, the countersunk wire carrier screw 100 in the high-radiation zone of the nuclear power plant, and the outer sleeve 20 can be selected and set according to actual needs, and are not specifically limited here. The parameters of the inner sleeve 10 can be determined according to… Figure 8 and Figure 9 The specific implementation is not limited here.
[0036] In some embodiments, there are two second through slots 221, and the two second through slots 221 are symmetrically arranged along the axis of the outer casing 20. Of course, there may be only one second through slot 221, or other numbers, which are not specifically limited here.
[0037] In some embodiments, the peripheral wall 22 is further provided with a third through groove 222 communicating with the second through groove 221, and the third through groove 222 extends along the circumferential direction of the peripheral wall 22. The middle part of the third through groove 222 may be connected to the upper end of the second through groove 221. The second through groove 221 and the third through groove 222 form a longitudinal and transverse unloading groove, which can increase the elasticity of the outer sleeve 20 and facilitate clamping.
[0038] In some embodiments, the connecting part 23 includes a hexagonal nut, and the operating element may include a wrench, including but not limited to an electric wrench or a pneumatic wrench, to enable quick assembly and disassembly of the countersunk wire-carrying screw 100 in the high-radiation zone of the nuclear power plant.
[0039] In some embodiments, the outer casing 20 has a wall thickness of 3 mm, and the parameters of the outer casing 20 can be found in reference to... Figures 10 to 12 The specific implementation is not limited here. Preferably, the outer casing 20 is a metal part, for example, the material of the outer casing 20 can be stainless steel. Of course, other metal materials can also be used, and there is no specific limitation here.
[0040] In some embodiments, the connecting assembly 40 includes a connecting screw 41 and a fastening nut 42. The connecting screw 41 passes through the first fixing part 24 and the second fixing part 25 and is fastened by the fastening nut 42. The fastening nut 42 may be a wing nut, which facilitates on-site adjustment of clamping friction and prevents slippage when operating with gloves on in high-dose areas. In some embodiments, the connecting assembly 40 includes an eccentric clamping wrench, which includes the connecting screw 41. This wrench can be operated by hand without tools to clamp the countersunk wire carrier screw 100 in the high-radiation area of a nuclear power plant. The connecting assembly 40 may be made of aluminum alloy.
[0041] The quick-release device for countersunk threaded rods in high-radiation areas of nuclear power plants, when used in conjunction with operating tools such as electric wrenches in high-dose areas, can save more than twice the time for disassembling and assembling countersunk threaded rods in high-radiation areas of nuclear power plants, taking a 15-thread engagement as an example. Using this device in high-radiation areas can effectively improve the disassembly and assembly efficiency of countersunk threaded rods in high-radiation areas of nuclear power plants, effectively reduce the time workers spend in the area, and significantly reduce the radiation dose received by personnel, ensuring the health and safety of workers.
[0042] 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 several 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 high radiation area sink carried thread screw rod fast disassembly device for nuclear power plant, characterized in that, The sleeve body comprises an inner sleeve body (10), an outer sleeve body (20), a fastener (30) and a connecting assembly (40); The inner sleeve body (10) is a tubular structure with both ends through, and is used for sleeving on a nuclear power plant high radiation area counterbore lead screw; the circumferential side wall of the inner sleeve body (10) is further provided with at least one first through groove (11) extending along the axial direction of the inner sleeve body (10), and the lower end of the first through groove (11) extends to the lower end of the inner sleeve body (10); the circumferential side wall of the inner sleeve body (10) is further provided with a plurality of first connecting holes (12); The outer sleeve body (20) is a cylindrical structure, and is used for sleeving on the inner sleeve body (10); the outer sleeve body (20) comprises a top wall (21) and a peripheral wall (22) connected with the top wall (21); the top wall (21) is provided with a connecting part (23) connected with an operating part; the peripheral wall (22) is provided with at least one second through groove (221) extending along the axial direction of the outer sleeve body (20), and the lower end of the second through groove (221) extends to the lower end of the outer sleeve body (20); the circumferential side wall of the outer sleeve body (20) is further provided with a plurality of second connecting holes (223); the first connecting holes (12) and the second connecting holes (223) are connected through the fastener (30); The peripheral wall (22) is provided with a first fixing part (24) and a second fixing part (25) on both sides of the second through groove (221), and the connecting assembly (40) is used for connecting the first fixing part (24) and the second fixing part (25).
2. The high radiation area counterbore filament winding screw quick disconnect device for nuclear power plants of claim 1, wherein, The inner sleeve body (10) is made of a non-metallic soft material.
3. The high radiation area counterbore filament screw quick disconnect device for nuclear power plants of claim 1, wherein, The number of the first through grooves (11) is two, and the two first through grooves (11) are symmetrically arranged along the axis of the inner sleeve body (10).
4. The high radiation area counterbore filament screw quick disconnect device for nuclear power plants of claim 1, wherein, The thickness of the inner sleeve body (10) is 2-6 mm.
5. The high radiation area counterbore filament screw quick disconnect device for nuclear power plants of claim 1, wherein, The inner diameter size of the inner sleeve body (10) is 0.1 mm larger than the outer diameter size of the nuclear power plant high radiation area counterbore lead screw, and the outer diameter size of the inner sleeve body (10) is 0.1 mm smaller than the inner diameter size of the outer sleeve body (20).
6. The high radiation area counterbore filament screw quick disconnect device for nuclear power plants of claim 1, wherein, The number of the second through grooves (221) is two, and the two second through grooves (221) are symmetrically arranged along the axis of the outer sleeve body (20).
7. The high radiation area counterbore filament screw quick disconnect device for nuclear power plants of claim 1, wherein, The peripheral wall (22) is further provided with a third through groove (222) in communication with the second through groove (221), and the third through groove (222) extends along the circumferential direction of the peripheral wall (22).
8. The high radiation area counterbore filament screw quick disconnect device for nuclear power plants of claim 1, wherein, The connecting assembly (40) comprises a connecting screw (41) and a fastening nut (42), and the connecting screw (41) is arranged through the first fixing part (24) and the second fixing part (25) and is fastened through the fastening nut (42).
9. The high radiation area counterbore filament screw quick disconnect device for nuclear power plants of claim 1, wherein, The connecting part (23) comprises a hexagonal nut.
10. The high radiation area counterbore filament winding screw quick disconnect device of a nuclear power plant of claim 1, wherein, The outer sleeve body (20) is a metal part.