Maintenance device for nuclear power steam generator

Abstract

The utility model is suitable for the technical field of nuclear power equipment maintenance, and provides a nuclear power steam generator maintenance device which comprises a conveying belt body, a magnetic adsorption head and an adsorption driving assembly. The magnetic adsorption head comprises a supporting frame and a magnetic assembly. The whole magnetism of the magnetic adsorption head can be controlled by changing the position, away from the working opening, of the magnetic assembly, the magnetic adsorption head can accurately capture and remove filament-shaped foreign matter between pipes, and therefore the narrow space between the evaporator pipes can be cleaned and maintained more conveniently. Meanwhile, the defects of high grabbing difficulty, low grabbing efficiency and the like caused by the fact that existing grabbing tools at home and abroad are limited by the unique and narrow space structure of the evaporator are overcome, the device can work in the narrow space between evaporator pipes, multiple foreign matters can be adsorbed between the pipes through one-time operation, and the working efficiency is improved. And the difficulty of grabbing fragmentary filiform foreign matters between pipes is reduced, the working efficiency of grabbing fine metal foreign matters is improved, and the exposure dose of field operators is also reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of nuclear power equipment maintenance, in particular to a nuclear power steam generator maintenance device. Background Art

[0002] Nuclear power generation is an important renewable energy technology. It replaces the chemical energy of fossil fuels with nuclear fission energy, replaces thermal power boilers with nuclear reactors and steam generators, and generates electricity using steam-driven turbines. A current nuclear power plant primarily consists of a nuclear reactor, steam generator, steam turbine, generator, and power regulation and control system. The steam generator is a crucial component of a nuclear power plant's primary and secondary heat exchange system. Its function is to transfer heat from the nuclear reactor core and primary circuit to the secondary circuit water system through internal heat exchange tubes. It also generates steam that meets the required requirements and supplies the turbine-generator units in the turbine building, driving electricity generation. During steam generator operation, damage to upstream metal screens and other factors can lead to the accumulation of small metallic foreign matter in the intertube areas of the steam generators. These foreign matter must be removed during each nuclear power plant shutdown for maintenance. However, due to the uniquely narrow structure of steam generators, there are currently no efficient tools or methods for removing these foreign matter. Consequently, only a single metallic foreign object can be removed per operation, resulting in inefficient removal of metallic foreign matter from the intertube areas of the steam generators. Utility Model Content

[0003] The utility model aims to provide a nuclear power steam generator maintenance device, aiming to solve the technical problem of low efficiency in cleaning metal foreign matter between tubes of nuclear power steam generators in the prior art.

[0004] The utility model is implemented as follows: a nuclear power steam generator maintenance device, comprising:

[0005] conveyor belt body;

[0006] A magnetic adsorption head, the magnetic adsorption head comprising a support frame and a magnetic component, the support frame being fixed to the first end of the conveyor belt body, the support frame being provided with an installation space, the installation space having a working opening, and the magnetic component being slidably disposed within the installation space; and

[0007] An adsorption drive component, wherein the drive end of the adsorption drive component is connected to the magnetic component, and the adsorption drive component is used to drive the magnetic component away from or close to the working opening.

[0008] In an optional embodiment, the adsorption drive component includes a flexible traction member and an elastic member, one end of the flexible traction member is connected to the magnetic component, and the other end extends toward the second end of the conveyor belt body, and is used to apply a force to the magnetic component away from the working opening when the flexible traction member is pulled, and the elastic member is arranged between the support frame and the magnetic component, and is used to apply a force to the magnetic component toward the working opening.

[0009] In an optional embodiment, a plurality of guide rollers are rotatably provided on the support frame, the flexible traction member is wound around the guide rollers, the guide rollers are used to make the flexible traction member extend along a preset path, and a limiting structure is also provided on the conveyor belt body, the limiting structure is used to limit the movement of the flexible traction member on the conveyor belt body.

[0010] In an optional embodiment, the limiting structure includes a threading through hole provided on the conveyor belt body, the threading through hole is provided through the conveyor belt body along the length direction of the conveyor belt body, and the flexible traction member is provided in the threading through hole.

[0011] In an optional embodiment, the first end of the conveyor belt body is provided with an avoidance groove, the outlet of the threading hole is located on the bottom surface of the avoidance groove, and at least one guide roller is provided on the part of the support frame located in the avoidance groove.

[0012] In an optional embodiment, the support frame includes a first support member and a second support member, the first support member and the second support member are interlocked with each other, and the first end portion of the conveyor belt body is clamped between the first support member and the second support member.

[0013] In an optional embodiment, the magnetic assembly includes a sliding seat and a magnetic member, the sliding seat is slidably arranged in the installation space and is connected to the driving end of the adsorption drive assembly, and the magnetic member is installed on the sliding seat.

[0014] In an optional embodiment, a sliding roller is rotatably provided on the side of the sliding seat, and a sliding guide rail for accommodating the sliding roller is also provided on the inner wall of the installation space, and the sliding roller can roll along the length direction of the sliding guide rail, and the sliding seat is slidably connected to the support frame through the sliding roller and the sliding guide rail.

[0015] In an optional embodiment, the conveyor belt body includes a belt body, a support airbag and a connecting tube. The support airbag is arranged in an area of ​​the belt body close to the support frame. The connecting tube is used to connect the support airbag with an external air source. The belt body is also provided with a accommodating structure for accommodating the support airbag and the connecting tube.

[0016] In an optional embodiment, a plurality of driving holes are provided on the belt body, and the driving holes are arranged at intervals along the length direction of the belt body.

[0017] The technical effect of the present invention compared to the prior art is as follows: a magnetic adsorption head is provided at the first end of the conveyor belt body, wherein the magnetic adsorption head includes a support frame and a magnetic component, an installation space is provided on the support frame, and the installation space has a working opening, and the magnetic component is slidably arranged inside the installation space. At the same time, the magnetic component is connected to the driving end of the adsorption drive component, and can be moved close to or away from the working opening under the action of the adsorption drive component. During operation, the conveyor belt body can be driven to move by a robot or a manual tool, so that the magnetic adsorption head located at the first end of the conveyor belt body moves to the designated area that needs maintenance and cleaning, and during the movement of the magnetic adsorption head, the magnetic component is driven away from the working opening by the adsorption drive component to prevent the magnetic component from adsorbing other objects before reaching the designated area, and after reaching the designated area, the magnetic component is driven close to the working opening by the adsorption drive component, so that the magnetic component can adsorb and clean small metal foreign objects in the designated area, and finally, after the adsorption and cleaning is completed, the conveyor belt body is driven to drive the magnetic adsorption head to reset. Compared to existing maintenance devices, the overall magnetic properties of the magnetic suction head can be controlled by adjusting the position of the magnetic component relative to the working opening. This allows the magnetic suction head to accurately capture and remove fine filamentary foreign matter between the tubes, making cleaning and maintenance in the narrow spaces between the evaporator tubes more convenient. This device overcomes the shortcomings of existing domestic and international grasping tools, such as the difficulty and low efficiency of grasping caused by the uniquely narrow space structure of the evaporator. It can operate within the narrow space between the evaporator tubes and can absorb multiple foreign objects from the tubes in a single operation, reducing the difficulty of capturing fragmented and fine filamentary foreign matter between the tubes and improving the efficiency of capturing small metal foreign matter between the evaporator tubes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic structural diagram of a nuclear power steam generator maintenance device provided by an embodiment of the present utility model;

[0020] Figure 2 This is a partial cross-sectional structural diagram of a nuclear power steam generator maintenance device provided by an embodiment of the present utility model;

[0021] Figure 3 A schematic structural diagram of the magnetic adsorption head used in an embodiment of the present utility model.

[0022] Description of reference numerals:

[0023] 1. Conveyor belt body; 11. Belt body; 12. Support airbag; 13. Avoidance groove; 14. Limiting structure; 141. Threading hole; 15. Connecting pipe; 16. Drive hole; 2. Magnetic adsorption head; 21. Support frame; 211. First support member; 212. Second support member; 213. Installation space; 214. Working opening; 215. Sliding guide rail; 22. Magnetic component; 221. Sliding seat; 222. Magnetic member; 223. Sliding roller; 23. Guide rod; 3. Adsorption drive component; 31. Flexible traction member; 32. Elastic member; 4. Guide roller. DETAILED DESCRIPTION

[0024] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0025] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0027] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0029] Please refer to Figures 1 to 3 As shown, in an embodiment of the present invention, a nuclear power steam generator maintenance device is provided. The device comprises a conveyor belt 1, a magnetic adsorption head 2, and an adsorption drive assembly 3. The magnetic adsorption head 2 comprises a support frame 21 and a magnetic assembly 22. The support frame 21 is fixed to the first end of the conveyor belt 1. The support frame 21 is provided with an installation space 213, and the installation space 213 has a working opening 214. The magnetic assembly 22 is slidably disposed within the installation space 213. The driving end of the adsorption drive assembly 3 is connected to the magnetic assembly 22, and the adsorption drive assembly 3 is used to drive the magnetic assembly 22 away from or toward the working opening 214.

[0030] Specifically, the conveyor belt body 1 refers to a component of a certain length and can be in the shape of a plate, strip, or column. The conveyor belt body 1 can be a rigid component or a component capable of elastic deformation within a certain range. The support frame 21 refers to a supporting structure of a certain volume and can be in the shape of a block, plate, or a combination of multiple shapes. The support frame 21 can be secured to the first end of the conveyor belt body 1 by means of snap-fitting, welding, or fasteners. The installation space 213 refers to a accommodating structure with a certain space located on the support frame 21. The installation space 213 can be a semi-enclosed structure, such as a groove structure provided in the support frame 21, in which case the opening of the groove structure serves as the working opening 214. The installation space 213 can also be an open structure, such as by configuring the support frame 21 as a whole in a "C" or "U" shape, thereby enclosing the installation space 213 with the working opening 214. The magnetic component 22 refers to a component or assembly capable of emitting a magnetic field. The magnetic component 22 can attract certain metals or other magnetic materials. The magnetic component 22 can be an electromagnet or a component made of a permanent magnetic material. The adsorption drive component 3 refers to a component or assembly that drives the object to move. The adsorption drive component 3 can be a component such as a cylinder, a hydraulic cylinder, or an electric push rod. The adsorption drive component 3 can also be a traction rope and an elastic member 32. The adsorption drive component 3 can also be a crankshaft crank structure.

[0031] The nuclear power steam generator maintenance device provided by the present embodiment comprises a magnetic adsorption head 2 disposed at the first end of a conveyor belt 1. The magnetic adsorption head 2 comprises a support frame 21 and a magnetic assembly 22. The support frame 21 is provided with an installation space 213 having a working opening 214. The magnetic assembly 22 is slidably disposed within the installation space 213. The magnetic assembly 22 is also connected to the driving end of an adsorption drive assembly 3 and can be moved toward or away from the working opening 214 under the action of the adsorption drive assembly 3. During operation, the conveyor belt body 1 can be driven to move by a robot or a manual tool, so that the magnetic adsorption head 2 located at the first end of the conveyor belt body 1 moves to the designated area that needs maintenance and cleaning, and during the movement of the magnetic adsorption head 2, the adsorption drive component 3 drives the magnetic component 22 away from the working opening 214 to prevent the magnetic component 22 from adsorbing other objects before reaching the designated area. After reaching the designated area, the adsorption drive component 3 drives the magnetic component 22 close to the working opening 214, so that the magnetic component 22 can adsorb and clean the small metal foreign matter in the designated area. Finally, after the adsorption and cleaning is completed, the conveyor belt body 1 is driven to drive the magnetic adsorption head 2 to reset. Compared with the maintenance device in the prior art, the overall magnetism of the magnetic adsorption head 2 can be controlled by changing the position of the magnetic component 22 from the working opening 214, so that the magnetic adsorption head 2 can accurately capture and remove the filamentous foreign matter between the tubes, thereby making the cleaning and maintenance of the narrow space between the evaporator tubes more convenient. At the same time, it overcomes the shortcomings of existing domestic and foreign grasping tools, such as difficulty in grasping and low grasping efficiency, which are limited by the unique narrow space structure of the evaporator. It can work in the narrow space between the evaporator tubes, and can absorb multiple foreign objects from between the tubes in one operation, reducing the difficulty of grasping fragmentary and filamentous foreign objects between the tubes and improving the work efficiency of grasping small metal foreign objects.

[0032] In addition, this maintenance device can remove multiple foreign objects at one time, reducing the number of times operators enter high-radiation environments. At the same time, high work efficiency also shortens the working time of a single operation, thereby effectively reducing the radiation dose they receive during the operation and protecting the health and safety of the staff.

[0033] In one embodiment, see Figure 1 and Figure 2The suction drive assembly 3 includes a flexible traction member 31 and an elastic member 32. One end of the flexible traction member 31 is connected to the magnetic assembly 22, and the other end extends toward the second end of the conveyor belt body 1. When the flexible traction member 31 is pulled, it applies a force to the magnetic assembly 22 away from the working opening 214. The elastic member 32 is disposed between the support frame 21 and the magnetic assembly 22 and applies a force toward the working opening 214. Specifically, the flexible traction member 31 is a flexible component of a certain length, such as a traction rope. The elastic member 32 is a component with a certain degree of elasticity and can be a spring, a rubber column, or a spring. The flexible traction member 31 is connected to the magnetic assembly 22 at one end, and extends toward the second end of the conveyor belt body 1 at the other end. The elastic member 32 is disposed between the support frame 21 and the magnetic assembly 22. When the flexible traction member 31 is pulled, it applies a force to the magnetic assembly 22 away from the working opening 214, while the elastic member 32 applies a force toward the working opening 214. During the movement of the magnetic adsorption head 2, the flexible traction member 31 can be pulled to drive the magnetic component 22 to move away from the working opening 214, thereby controlling the overall magnetism of the magnetic adsorption head 2 and preventing the magnetic component 22 from being attracted to other objects before reaching the designated position. After the magnetic adsorption head 2 moves to the designated area, the flexible traction member 31 can be released, allowing the magnetic component 22 to move toward the working opening 214 under the action of the elastic member 32, thereby increasing the overall magnetism of the magnetic adsorption head 2, allowing it to adsorb metal foreign objects in the designated area and making the adjustment of the magnetic component 22 more convenient.

[0034] In an alternative embodiment, see Figure 1 A guide structure is also provided between the magnetic component 22 and the support frame 21. The guide structure includes a guide rod 23 provided on the magnetic component 22 and a guide hole provided on the support frame 21. The guide rod 23 is provided in a direction parallel to the sliding direction of the magnetic component 22, and the guide rod 23 is slidably inserted into the guide hole. Specifically, the guide rod 23 refers to a rod-shaped component with a certain length, and the cross-sectional shape of the guide rod 23 can be circular or polygonal. The guide hole refers to a hole structure with a certain depth, and the cross-sectional shape of the guide hole matches the guide rod 23. By providing the guide rod 23 in a direction parallel to the sliding direction of the magnetic component 22, and the guide rod 23 is slidably inserted into the guide hole, the magnetic component 22 is guided by the interaction between the guide rod 23 and the guide hole during the movement of the magnetic component 22, so that the movement of the magnetic component 22 is smoother and more precise.

[0035] Based on the above-mentioned characteristic guide rod 23, please refer to Figure 1 and Figure 2The elastic member 32 includes a spring, one end of which abuts against the inner side of the support frame 21 and the other end abuts against the magnetic assembly 22, and the spring is sleeved on the outside of the guide rod 23. By sleeved on the outside of the guide rod 23, the installation of the spring can be made more firm and stable.

[0036] In one embodiment, see Figure 1 and Figure 2 A plurality of guide rollers 4 are rotatably provided on the support frame 21, and the flexible traction member 31 is wound around the guide rollers 4. The guide rollers 4 are used to extend the flexible traction member 31 along a preset path. A limiting structure 14 is also provided on the conveyor belt body 1. The limiting structure 14 is used to limit the movement of the flexible traction member 31 on the conveyor belt body 1. Specifically, the guide roller 4 refers to a wheel-shaped or disc-shaped component with a certain diameter. The guide roller 4 can be rotatably provided on the support frame 21 via a rotating shaft. The limiting structure 14 refers to a structure that can limit the flexible traction member 31 so that the flexible traction member 31 can only move along a preset path. The limiting structure 14 can be a groove structure or a through-hole structure directly provided on the conveyor belt body 1, and the flexible traction member 31 is limited by passing through the groove structure or the through-hole structure. In addition, the limiting structure 14 can also be a plurality of limiting components provided on the outside of the conveyor belt body 1, and the plurality of limiting components are provided at intervals along the path of the flexible traction member 31, and the limiting components have a groove structure or a hole structure. By arranging a plurality of guide rollers 4 at intervals along a preset path of the flexible traction member 31, the guide rollers 4 can guide the flexible traction member 31 and, in conjunction with the limiting structure 14, stabilize the movement of the flexible traction member 31. Furthermore, the flexible traction member 31 can be wound around the guide rollers 4, and the rotation of the guide rollers 4 during the movement of the flexible traction member 31 can reduce friction between the flexible traction member 31 and the support frame 21.

[0037] In an alternative embodiment, see Figure 1 and Figure 2 The guide roller 4 also has an accommodating groove arranged along the circumference of the guide roller 4. By providing the accommodating groove on the outer circumference of the guide roller 4, the flexible traction member 31 can be accommodated in the accommodating groove when it is wound around the outside of the guide roller 4, thereby reducing the risk of the flexible traction member 31 being separated from the guide roller 4 and making the contact between the flexible traction member 31 and the guide roller 4 more stable and reliable.

[0038] In one embodiment, see Figure 1 and Figure 2The limiting structure 14 includes a threading hole 141 provided on the conveyor belt body 1. The threading hole 141 is provided through the conveyor belt body 1 along the length direction of the conveyor belt body 1, and the flexible traction member 31 is provided in the threading hole 141. Specifically, the threading hole 141 refers to a through-hole structure with a certain length. By providing the threading hole 141 on the conveyor belt body 1, the flexible traction member 31 can extend from the first end of the conveyor belt body 1 to the second end of the conveyor belt body 1 through the threading hole 141. While the flexible traction member 31 is movably limited, it can also be pulled more conveniently, thereby making the position driving of the magnetic component 22 simpler and more convenient.

[0039] In one embodiment, see Figure 1 and Figure 2 The first end of the conveyor belt body 1 is provided with an escape groove 13, the outlet of the threading hole 141 is located on the bottom surface of the escape groove 13, and at least one guide roller 4 is provided on the portion of the support frame 21 located within the escape groove 13. Specifically, the escape groove 13 refers to a vacant area provided at the first end of the conveyor belt body 1. By providing the escape groove 13, two protruding structures can be formed at the first end of the conveyor belt body 1, and a mounting groove for accommodating the two protruding structures is provided on the support frame 21. The protruding structures can be inserted into the mounting grooves, and then the protruding structures and the support frame 21 are simultaneously penetrated by pins or screws to achieve the connection and installation of the conveyor belt body 1 and the support frame 21. In addition, the outlet of the threading hole 141 is located on the bottom surface of the escape groove 13, and at least one guide roller 4 is provided on the portion of the support frame 21 located within the escape groove 13. The flexible traction member 31 can be guided by the guide roller 4 to enter the threading hole 141, making the extension path of the flexible traction member 31 more reasonable.

[0040] In one embodiment, see Figure 3 The support frame 21 includes a first support 211 and a second support 212. The first support 211 and the second support 212 are interlocked, and the first end of the conveyor belt body 1 is clamped between the first support 211 and the second support 212. Specifically, the first support 211 and the second support 212 refer to two components with matching shapes. The overall shape of the first support 211 and the second support 212 can be "U"-shaped or "C"-shaped. By interlocking the first support 211 and the second support 212, the first end of the conveyor belt body 1 can be clamped between the first support 211 and the second support 212, making the connection and installation of the conveyor belt body 1 and the support frame 21 more convenient. The guide roller 4 and the like can also be clamped between the first support 211 and the second support 212, making the assembly of the support frame 21 more convenient.

[0041] In one embodiment, see Figure 1The magnetic assembly 22 includes a sliding seat 221 and a magnetic part 222. The sliding seat 221 is slidably arranged in the installation space 213 and is connected to the driving end of the adsorption drive assembly 3. The magnetic part 222 is installed on the sliding seat 221. Specifically, the sliding seat 221 refers to a component with a certain volume. The sliding seat 221 can be a block, a plate or a combination of multiple shapes. The magnetic part 222 refers to a component with magnetism. The magnetic part 222 can be a block component made of permanent magnetic material. The magnetic part 222 can also be an electromagnet, etc. By sliding the sliding seat 221 in the installation space 213 and connecting it to the driving end of the adsorption drive assembly 3, and then installing the magnetic part 222 on the sliding seat 221 to form the magnetic assembly 22, the magnetic part 222 can move together with the sliding seat 221, making it more convenient to adjust the position of the magnetic part 222.

[0042] In an alternative embodiment, see Figure 2 The sliding seat 221 is provided with a snap-in groove for accommodating the magnetic member 222, and the magnetic member 222 is disposed in the snap-in groove. Specifically, the snap-in groove refers to a groove structure having a certain depth. By providing the snap-in groove on the sliding seat 221 and disposing the magnetic member 222 in the snap-in groove, the installation of the magnetic member 222 can be made more secure. In addition, after the magnetic member 222 is installed in the snap-in groove, a pin can be used to penetrate the sliding seat 221 and the magnetic member 222 to prevent the magnetic member 222 from falling out of the snap-in groove.

[0043] In one embodiment, see Figure 2 A sliding roller 223 is rotatably mounted on the side of the sliding seat 221. A sliding guide rail 215 is also mounted on the inner wall of the mounting space 213 to accommodate the sliding roller 223. The sliding roller 223 can roll along the length of the sliding guide rail 215. The sliding seat 221 is slidably connected to the support frame 21 via the sliding roller 223 and the sliding guide rail 215. Specifically, the sliding roller 223 is a disk-shaped or cylindrical component with a certain diameter. The sliding guide rail 215 is a sliding rail structure with a certain length. The sliding guide rail 215 can be formed by providing a groove structure on the support frame 21 or by providing two spaced-apart baffles on the support frame 21. By rotatably mounting the sliding roller 223 on the side of the sliding seat 221, and positioning the sliding roller 223 within the sliding guide rail 215 and allowing it to roll along the length of the sliding guide rail 215, the magnetic assembly 22 slides more smoothly, and the sliding seat 221 slides more stably and conveniently.

[0044] In one embodiment, see Figure 1The conveyor belt body 1 includes a belt body 11, a support airbag 12 and a connecting tube 15. The support airbag 12 is arranged in the area of ​​the belt body 11 close to the support frame 21. The connecting tube 15 is used to connect the support airbag 12 with the external air source. The belt body 11 is also provided with a accommodating structure for accommodating the support airbag 12 and the connecting tube 15. Specifically, the belt body 11 refers to a plate-like structure with a certain length. The belt body 11 is usually made of non-metallic materials. The belt body 11 can be manufactured by injection molding, die casting or polyurethane overmolding. The support airbag 12 refers to an airbag structure arranged in a preset shape. The support airbag 12 is usually grid-shaped. A accommodating structure for accommodating the support airbag 12 is provided on the belt body 11, and the support airbag 12 can be clamped in the accommodating structure. At the same time, the support airbag 12 is connected to the external air source through the connecting tube 15. By setting the support airbag 12 in the area of ​​the belt body 11 close to the support frame 21, the shape of the area of ​​the belt body 11 close to the support frame 21 can be changed by controlling the inflation amount in the support airbag 12, so that the position of the magnetic adsorption head 2 can be adjusted, which can make maintenance more convenient.

[0045] In one embodiment, see Figure 1 The belt body 11 is provided with a plurality of drive holes 16, which are spaced apart along the length of the belt body 11. Specifically, the drive holes 16 are holes having a certain depth, and the drive holes 16 can be provided through the thickness of the belt body 11. By providing a plurality of drive holes 16 on the belt body 11, the belt body 11 can be used in conjunction with a robot or a manual tool, thereby reducing the risk of slipping when the transmission belt body is driven, making the robot or manual tool driving the belt body 11 more stable and improving the accuracy of the movement.

[0046] The above description is merely a preferred embodiment of the present invention and specifically describes the technical principles of the present invention. These descriptions are intended only to explain the principles of the present invention and should not be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention, as well as other specific embodiments of the present invention that can be devised by those skilled in the art without inventive effort, shall be included within the scope of protection of the present invention.

Claims

1. A nuclear power steam generator maintenance device, characterized in that: include: conveyor belt body; A magnetic adsorption head, the magnetic adsorption head comprising a support frame and a magnetic component, the support frame being fixed to the first end of the conveyor belt body, the support frame being provided with an installation space, the installation space having a working opening, and the magnetic component being slidably disposed within the installation space; as well as An adsorption drive component, wherein the drive end of the adsorption drive component is connected to the magnetic component, and the adsorption drive component is used to drive the magnetic component away from or close to the working opening.

2. The nuclear power steam generator maintenance device according to claim 1, characterized in that: The adsorption drive component includes a flexible traction member and an elastic member, one end of the flexible traction member is connected to the magnetic component, and the other end extends toward the second end of the conveyor belt body, and is used to apply a force to the magnetic component away from the working opening when the flexible traction member is pulled. The elastic member is arranged between the support frame and the magnetic component, and is used to apply a force to the magnetic component toward the working opening.

3. The nuclear power steam generator maintenance device according to claim 2, characterized in that: A plurality of guide rollers are rotatably provided on the support frame, and the flexible traction member is wound around the guide rollers. The guide rollers are used to make the flexible traction member extend along a preset path. A limiting structure is also provided on the conveyor belt body, and the limiting structure is used to limit the movement of the flexible traction member on the conveyor belt body.

4. The nuclear power steam generator maintenance device according to claim 3, characterized in that: The limiting structure includes a threading through hole provided on the conveyor belt body, the threading through hole is provided through the conveyor belt body along the length direction of the conveyor belt body, and the flexible traction member is provided in the threading through hole.

5. The nuclear power steam generator maintenance device according to claim 4, characterized in that: The first end of the conveyor belt body is provided with an avoidance groove, the outlet of the threading through hole is located on the bottom surface of the avoidance groove, and at least one guide roller is provided on the part of the support frame located in the avoidance groove.

6. The nuclear power steam generator maintenance device according to claim 5, characterized in that: The support frame includes a first support member and a second support member. The first support member and the second support member are buckled with each other, and the first end of the conveyor belt body is clamped between the first support member and the second support member.

7. The nuclear power steam generator maintenance device according to any one of claims 1 to 6, characterized in that: The magnetic assembly includes a sliding seat and a magnetic component. The sliding seat is slidably arranged in the installation space and is connected to the driving end of the adsorption drive assembly. The magnetic component is installed on the sliding seat.

8. The nuclear power steam generator maintenance device according to claim 7, characterized in that: A sliding roller is rotatably provided on the side of the sliding seat, and a sliding guide rail for accommodating the sliding roller is also provided on the inner wall of the installation space, and the sliding roller can roll along the length direction of the sliding guide rail. The sliding seat is slidably connected to the support frame through the sliding roller and the sliding guide rail.

9. The nuclear power steam generator maintenance device according to any one of claims 1 to 6, characterized in that: The conveyor belt body includes a belt body, a support airbag and a connecting tube. The support airbag is arranged in the area of ​​the belt body close to the support frame. The connecting tube is used to connect the support airbag with an external air source. The belt body is also provided with a accommodating structure for accommodating the support airbag and the connecting tube.

10. The nuclear power steam generator maintenance device according to claim 9, characterized in that: The belt body is provided with a plurality of driving holes, and the driving holes are arranged at intervals along the length direction of the belt body.

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