High-toughness bolt for nuclear power station
By introducing graphene, metal glass and polyethylene fiber material layers into the nuclear power plant bolts and adopting an adjusting structure, the problems of insufficient toughness and poor adaptability of the bolts are solved, higher toughness and wider applicability are achieved, and the stability and safety of the connection of parts of the nuclear power plant are enhanced.
Patent Information
- Application Number
- CN202421666320.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-15
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-15
AI Technical Summary
Due to insufficient toughness in nuclear power plants, existing bolts are prone to break under vibration or tensile force, resulting in unstable connections, increasing safety risks, and being unable to adapt to nuclear power plant parts of different thicknesses.
A high-toughness bolt of nuclear power plant was designed. By setting a graphene material layer, a metal glass material layer and a polyethylene fiber material layer in the bolt, the toughness and deformation resistance of the bolts are increased, and the bolt length is adjusted through the combination of adjustment grooves, limit grooves, limit plates, bearings, stabilizing rods and adjustment rods, and the bolt length is adjusted to adapt to parts of different thicknesses.
It effectively improves the toughness and deformation resistance of the bolt, prevents breakage, enhances the stability of the part connection, reduces safety risks, and improves the applicability and functionality of the bolts.
Smart Images
Figure CN222863836U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of nuclear power plants, and in particular, relates to a high-toughness bolt for a nuclear power plant. Background Art
[0002] A nuclear power plant refers to a facility that converts nuclear energy into electrical energy through appropriate devices. A nuclear power plant uses a nuclear reactor to replace the boiler of a thermal power plant. Nuclear fuel undergoes a special form of "combustion" in the nuclear reactor to generate heat, which converts nuclear energy into thermal energy to heat water to produce steam. The systems and equipment of a nuclear power plant usually consist of two major parts: the nuclear system and equipment, also known as the nuclear island, and the conventional system and equipment, also known as the conventional island. Most of the connections between nuclear power plant parts are made by bolts, which is not only convenient for disassembly, but also for maintenance.
[0003] However, the existing bolts are generally of relatively high strength. When nuclear power plant parts are vibrated or subjected to strong tensile forces, the bolts as a whole may break due to insufficient toughness. This not only results in poor use effect, requiring maintenance personnel to replace the broken bolts, but also leads to unstable connection relationships between nuclear power plant parts and structures, thereby increasing safety hazards. In addition, due to the different thicknesses of parts in nuclear power plant parts, different types of bolts need to be replaced when using bolts for fixing. This not only makes it inconvenient to carry bolts of different types during installation, but also reduces the use effect of the bolts.
[0004] To this end, we proposed a high-toughness bolt for nuclear power plants to solve the above problems. Utility Model Content
[0005] The purpose of this application is to solve the problem in the prior art that the bolt as a whole breaks due to insufficient toughness, poses certain safety hazards, and cannot fix nuclear power plant components of different thicknesses, and to propose a high-toughness bolt for nuclear power plants.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] A high-toughness bolt for a nuclear power plant comprises a first bolt body, a second bolt body is arranged below the first bolt body, an adjustment groove is provided on the front side of the first bolt body, two limit grooves are provided on the inner wall of the adjustment groove, a limit plate is slidably connected to the interior of each limit groove, a bearing is fixedly connected to one side of the two limit plates close to each other, the outer surface of the bearing is slidably connected to the interior of the adjustment groove, a stabilizing rod is fixedly connected to the inner ring of the bearing, an adjustment rod is fixedly connected to the front side of the stabilizing rod, the front side of the adjustment rod is fixedly connected to the back side of the second bolt body, the outer surface of the adjustment rod is threadedly connected to the inner wall of the adjustment groove, a first graphene material layer is fixedly connected to the upper surface of the first bolt body, a second graphene material layer is fixedly connected to the bottom surface of the first bolt body, a first metal glass material layer and a second metal glass material layer are fixedly connected to one side of the first graphene material layer and the second graphene material layer away from each other, respectively, and a first polyethylene fiber material layer and a second polyethylene fiber material layer are fixedly connected to one side of the first metal glass material layer and the second metal glass material layer away from each other.
[0008] Preferably, a nut is provided on the outer side of the first bolt body, and the inner wall of the nut is threadedly connected to the outer surface of the first bolt body.
[0009] Preferably, a first gasket is fixedly connected to the back side of the nut, and an inner wall of the first gasket is in contact with an outer surface of the first bolt body.
[0010] Preferably, a second gasket is provided on the outer side of the first bolt body, and the inner wall of the second gasket is fixedly connected to the outer surface of the first bolt body.
[0011] Preferably, a buffer pad is fixedly connected to the upper surface of the bearing, and the upper surface of the buffer pad is in contact with the inner top wall of the adjustment groove.
[0012] Preferably, a shock-absorbing pad is arranged inside each of the limiting grooves, and the upper surface of each of the shock-absorbing pads is fixedly connected to the bottom surface of the limiting plate.
[0013] In summary, the technical effects and advantages of this application are:
[0014] By providing the first graphene material layer and the second graphene material layer, the toughness of the bolt can be increased, and the overall deformation resistance of the bolt can be effectively increased. By using the first metallic glass material layer, the second metallic glass material layer, the first polyethylene fiber material layer and the second polyethylene fiber material layer, the overall toughness of the bolt can be further increased to prevent the bolt from breaking when the nuclear power plant parts are vibrated or subjected to strong tensile force during use, thereby avoiding the problem of poor use effect, resulting in unstable connection relationship between nuclear power plant parts structures, thereby increasing safety hazards. By using the adjustment groove, the limit groove, the limit plate, the bearing, the stabilizer rod and the adjustment rod, the length of the bolt can be effectively adjusted, which is convenient for use in nuclear power plant connection parts of different thicknesses, and the functionality of the bolt is increased. The adjustment rod is used to extend and retract inside the adjustment groove, and the limit groove and the limit plate can limit the extension length, effectively increasing the use effect, and avoiding the problem of low practicality caused by the inability to connect nuclear power plant parts of different models using bolts. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the high-toughness bolt for a nuclear power plant of the utility model;
[0016] Figure 2 It is a schematic diagram of the structure of the first bolt body of the utility model in a cutaway perspective view;
[0017] Figure 3 It is a three-dimensional structural schematic diagram of the second bolt body of the utility model;
[0018] Figure 4 It is a three-dimensional structural diagram of the bearing of the utility model;
[0019] Figure 5 It is a cross-sectional view of the first bolt body of the utility model.
[0020] In the figure: 1. first bolt body; 2. second gasket; 3. nut; 4. second bolt body; 5. first gasket; 6. adjustment groove; 7. first metallic glass material layer; 8. bearing; 9. limit groove; 10. adjustment rod; 11. stabilizing rod; 12. shock-absorbing pad; 13. limit plate; 14. buffer pad; 15. first graphene material layer; 16. second graphene material layer; 17. second metallic glass material layer; 18. second polyethylene fiber material layer; 19. first polyethylene fiber material layer. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0022] Reference Figure 1-5 A high-toughness bolt for a nuclear power plant comprises a first bolt body 1, a second bolt body 4 is arranged below the first bolt body 1, an adjustment groove 6 is arranged on the front of the first bolt body 1, and two limit grooves 9 are arranged on the inner wall of the adjustment groove 6. A limit plate 13 is slidably connected to the inside of each limit groove 9. A nut 3 is arranged on the outer side of the first bolt body 1, and the inner wall of the nut 3 is threadedly connected to the outer surface of the first bolt body 1. Through the nut 3, the bolt can be assisted to reinforce the parts, effectively increasing the auxiliary effect.
[0023] The side surfaces of the two limit plates 13 that are close to each other are commonly fixedly connected with a bearing 8, the outer surface of the bearing 8 is slidably connected to the inside of the adjusting groove 6, the inner ring of the bearing 8 is fixedly connected with a stabilizing rod 11, the front of the stabilizing rod 11 is fixedly connected with an adjusting rod 10, the front of the adjusting rod 10 is fixedly connected to the back of the second bolt body 4, the outer surface of the adjusting rod 10 is threadedly connected to the inner wall of the adjusting groove 6, the back of the nut 3 is fixedly connected with a first gasket 5, the inner wall of the first gasket 5 is in contact with the outer surface of the first bolt body 1, and the first gasket 5 can increase the anti-slip property of the nut 3 to prevent the nut 3 from slipping.
[0024] The upper surface of the first bolt body 1 is fixedly connected to a first graphene material layer 15, and the bottom surface of the first bolt body 1 is fixedly connected to a second graphene material layer 16. The first graphene material layer 15 and the second graphene material layer 16 are both provided with graphene materials. Graphene is an allotrope of carbon, and carbon atoms are arranged in sp 2 Hybrid bonding forms a single-layer hexagonal honeycomb lattice graphene with good high toughness. A second gasket 2 is provided on the outside of the first bolt body 1, and the inner wall of the second gasket 2 is fixedly connected to the outer surface of the first bolt body 1. The second gasket 2 can increase the anti-slip property of the first bolt body 1 to prevent it from being loosely tightened.
[0025] The first graphene material layer 15 and the second graphene material layer 16 are fixedly connected to the first metal glass material layer 7 and the second metal glass material layer 17 on one side away from each other, and the first metal glass material layer 7 and the second metal glass material layer 17 are both provided with metal glass material inside. The strength of metal glass is higher than that of steel, the hardness exceeds that of high-hardness tool steel, and it has certain toughness and rigidity. The upper surface of the bearing 8 is fixedly connected to a buffer pad 14, and the upper surface of the buffer pad 14 is in contact with the inner top wall of the adjustment groove 6. The buffer pad 14 can increase the buffering of the top of the bearing 8 to prevent vibration from reducing the service life.
[0026] The first metallic glass material layer 7 and the second metallic glass material layer 17 are fixedly connected with a first polyethylene fiber material layer 19 and a second polyethylene fiber material layer 18 on a side away from each other. Polyethylene fiber material is arranged inside the first polyethylene fiber material layer 19 and the second polyethylene fiber material layer 18. Polyethylene fiber refers to a fiber material obtained by melt spinning polyethylene, and has good toughness. A shock-absorbing pad 12 is arranged inside each limiting groove 9. The upper surface of each shock-absorbing pad 12 is fixedly connected to the bottom surface of the limiting plate 13. The shock-absorbing pad 12 can reduce the collision of the limiting plate 13, and effectively buffer the limiting plate 13.
[0027] The working principle of the utility model is as follows: when in use, the first bolt body 1, the second bolt body 4, the stabilizing rod 11 and the adjusting rod 10 all contain the same material inside, and all have a certain toughness. Since the first graphene material layer 15 and the second graphene material layer 16 are contained inside, the toughness of the overall structure of the bolt can be increased, and the overall anti-deformation ability of the bolt can be effectively increased. The first metallic glass material layer 7, the second metallic glass material layer 17, the first polyethylene fiber material layer 19 and the second polyethylene fiber material layer 18 can further increase the overall toughness of the bolt, and prevent the bolt from breaking when the nuclear power plant parts are vibrated or strong tensile force occurs during use, thereby reducing To reduce the potential safety hazards of nuclear power plants due to unstable connections, when it is necessary to fix the structure of nuclear power plant parts, the overall length of the bolt can be adjusted according to the thickness of the parts, and the second bolt body 4 can be directly rotated. The second bolt body 4 drives the stabilizing rod 11 to rotate inside the bearing 8 through the adjusting rod 10. Since the adjusting rod 10 is threadedly connected to the adjusting groove 6, the reverse rotation of the adjusting rod 10 and the forward rotation of the adjusting rod 10 can make the adjusting rod 10 extend and retract inside the adjusting groove 6. The adjusting rod 10 can directly drive the limit plate 13 to slide inside the limit groove 9 by rotating inside the bearing 8, thereby ensuring the adjustment stability and avoiding the problem of low practicality due to the inability to connect nuclear power plant parts of different models using bolts.
[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A high-toughness bolt for a nuclear power plant, comprising a first bolt body (1), characterized in that: A second bolt body (4) is arranged below the first bolt body (1); an adjustment groove (6) is provided on the front side of the first bolt body (1); two limit grooves (9) are provided on the inner wall of the adjustment groove (6); the interior of each limit groove (9) is slidably connected to a limit plate (13); a bearing (8) is fixedly connected to one side of the two limit plates (13) close to each other; the outer surface of the bearing (8) is slidably connected to the interior of the adjustment groove (6); the inner ring of the bearing (8) is fixedly connected to a stabilizing rod (11); the front side of the stabilizing rod (11) is fixedly connected to an adjustment rod (10); the front side of the adjustment rod (10) is fixedly connected to the back side of the second bolt body (4). The outer surface of the adjusting rod (10) is threadedly connected to the inner wall of the adjusting groove (6); the upper surface of the first bolt body (1) is fixedly connected to a first graphene material layer (15); the bottom surface of the first bolt body (1) is fixedly connected to a second graphene material layer (16); the first metal glass material layer (7) and the second metal glass material layer (17) are respectively fixedly connected to the side away from each other of the first graphene material layer (15) and the second graphene material layer (16); the first metal glass material layer (7) and the second metal glass material layer (17) are both fixedly connected to the side away from each other of the first metal glass material layer (7) and the second metal glass material layer (17); and the first polyethylene fiber material layer (19) and the second polyethylene fiber material layer (18) are both fixedly connected to the side away from each other of the first metal glass material layer (7) and the second metal glass material layer (17).
2. A high-toughness bolt for a nuclear power plant according to claim 1, characterized in that: A nut (3) is arranged on the outer side of the first bolt body (1), and the inner wall of the nut (3) is threadedly connected to the outer surface of the first bolt body (1).
3. A high-toughness bolt for a nuclear power plant according to claim 2, characterized in that: A first gasket (5) is fixedly connected to the back of the nut (3), and the inner wall of the first gasket (5) is in contact with the outer surface of the first bolt body (1).
4. A high-toughness bolt for a nuclear power plant according to claim 1, characterized in that: A second gasket (2) is arranged on the outer side of the first bolt body (1), and the inner wall of the second gasket (2) is fixedly connected to the outer surface of the first bolt body (1).
5. A high-toughness bolt for a nuclear power plant according to claim 1, characterized in that: A buffer pad (14) is fixedly connected to the upper surface of the bearing (8), and the upper surface of the buffer pad (14) is in contact with the inner top wall of the adjustment groove (6).
6. A high-toughness bolt for a nuclear power plant according to claim 1, characterized in that: A shock-absorbing pad (12) is arranged inside each of the limiting grooves (9), and the upper surface of each of the shock-absorbing pads (12) is fixedly connected to the bottom surface of the limiting plate (13).