Automatic maintenance system for O-shaped ring groove of top cover of reactor pressure vessel

Abstract

The invention discloses a reactor pressure vessel top cover O-shaped ring groove automatic maintenance system, which comprises a trolley main body, which comprises a walking assembly and a trolley box body, and the walking assembly is installed on the trolley box body; the grinding and polishing module comprises a driving assembly, a grinding and polishing assembly and a pressure adjusting mechanism which are installed on the trolley box body, the driving assembly is connected with the grinding and polishing assembly for driving, and the pressure adjusting mechanism is elastically connected with the grinding and polishing assembly to adjust the abutting force between the grinding and polishing assembly and the O-shaped ring groove; and the surface detection module is fixedly arranged at the upper part of the trolley box body at the rear end of the grinding and polishing module so as to automatically detect the surface condition of the O-shaped ring groove. Full-automatic grinding and polishing and surface damage detection of the O-shaped ring groove can be achieved, the radiation dosage and the labor intensity of operation and maintenance personnel are reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of nuclear power equipment maintenance, and in particular to an automatic maintenance system for an O-ring groove on a reactor pressure vessel top cover. Background Art

[0002] After the reactor pressure vessel has been used for a period of time, the top cover of the vessel needs to be disassembled and replaced during each overhaul. In the sealing structure of the top cover, there are two annular grooves for placing O-rings. In order to ensure the good sealing performance of the O-rings, the two O-ring grooves need to be cleaned, polished and polished before each replacement or reinstallation of the O-rings.

[0003] The traditional operation method is for workers to grind the ring groove with hand-held grinding tools and then polish it. This manual grinding and polishing method is not only inefficient, but also difficult to ensure the uniformity of grinding, which is easy to cause secondary scratches on the surface of the ring groove. In addition, the workers use visual inspection to inspect the ring groove in a small space, which is inefficient and not very accurate. The workers are in a radiation environment for a long time, which also poses certain risks to their health. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an automatic maintenance system for the O-ring groove of the reactor pressure vessel top cover.

[0005] The technical solution adopted by the present invention to solve the technical problem is: an automatic maintenance system for an O-ring groove on a reactor pressure vessel top cover, comprising:

[0006] The trolley body comprises a traveling assembly and a trolley box, wherein the traveling assembly is mounted on the trolley box;

[0007] The grinding and polishing module comprises a driving assembly, a grinding and polishing assembly and a pressure regulating mechanism installed on the trolley housing, wherein the driving assembly is connected to the grinding and polishing assembly for driving, and the pressure regulating mechanism is elastically connected to the grinding and polishing assembly to adjust the contact pressure between the grinding and polishing assembly and the O-ring groove;

[0008] The surface detection module is fixedly arranged on the upper part of the trolley box at the rear end of the grinding and polishing module to automatically detect the surface condition of the O-ring groove.

[0009] In some embodiments, the grinding and polishing assembly includes a base frame and a grinding and polishing box, the base frame is fixedly connected to the trolley box, and the grinding and polishing box is elastically connected to the base frame through the pressure regulating mechanism.

[0010] In some embodiments, the grinding and polishing box includes a lower part of a box body and a grinding box / polishing box, the grinding box / polishing box is detachably connected to the lower part of the box body and to the driving assembly, and the lower part of the box body is elastically connected to the base frame through the pressure regulating mechanism.

[0011] In some embodiments, the pressure regulating mechanism includes a guide assembly, a linear bearing, a guide shaft and an elastic member. The guide assembly is respectively connected to the base frame and the grinding and polishing box for linear motion. The first end of the guide shaft is slidably connected to the linear bearing, and the second end of the guide shaft is fixedly connected to the grinding and polishing box. The elastic member is sleeved on the guide shaft, and the first end of the elastic member is abutted against the base frame through the linear bearing, and the second end of the elastic member is abutted against the grinding and polishing box through the guide shaft.

[0012] In some embodiments, the pressure regulating mechanism further includes an adjusting nut, which is threadedly connected to the guide shaft and abuts against the second end of the elastic member.

[0013] In some embodiments, the driving assembly includes a driving motor, a reducer and a first gear, the driving motor is connected to the reducer, the first gear is connected to the reducer, and is connected to a second gear external to the grinding and polishing assembly through a synchronous belt.

[0014] In some embodiments, the surface detection module includes a laser detection unit and / or a camera detection structure, and the laser detection units and / or the camera detection structure are arranged at intervals and are respectively fixedly connected to the trolley box.

[0015] In some embodiments, the surface detection module further includes two mounting rails, the mounting rails are directly or indirectly fixedly connected to the top of the trolley box, and the laser detection unit is slidably connected to the mounting rails.

[0016] In some embodiments, a dust suction device is also included, which is fixedly arranged on the upper part of the trolley box at the rear end of the grinding and polishing module and is connected to the grinding and polishing assembly through a pipeline for dust suction.

[0017] In some embodiments, at least one top guide assembly is further included, wherein the top guide assembly is fixedly connected to the trolley box body and is in rolling contact with the outer side walls or the inner side walls of the two O-ring grooves.

[0018] By implementing the present invention, the following beneficial effects are achieved:

[0019] The reactor pressure vessel top cover O-ring groove automatic maintenance system of the present invention comprises: a trolley main body, including a walking assembly and a trolley housing, the walking assembly is installed on the trolley housing; a grinding and polishing module, including a driving assembly, a grinding and polishing assembly and a pressure regulating mechanism installed on the trolley housing, the driving assembly is connected and driven by the grinding and polishing assembly, the pressure regulating mechanism is elastically connected to the grinding and polishing assembly to adjust the contact pressure between the grinding and polishing assembly and the O-ring groove; a surface detection module is fixedly arranged on the upper part of the trolley housing at the rear end of the grinding and polishing module to automatically detect the surface condition of the O-ring groove. The reactor pressure vessel top cover O-ring groove automatic maintenance system automatically walks on the existing circular track through the walking assembly, and automatically grinds or polishes the O-ring groove through the grinding and polishing module. The surface detection module can monitor the grinding or polishing condition, and can realize full-automatic grinding and polishing and damage detection of the O-ring groove, reduce the radiation dose and labor intensity of the operating and maintenance personnel, and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0021] Figure 1 It is a structural schematic diagram of an automatic maintenance system for an O-ring groove of a reactor pressure vessel top cover according to an embodiment of the present invention;

[0022] Figure 2 yes Figure 1 The structural diagram of the main body of the trolley;

[0023] Figure 3 yes Figure 1 A schematic diagram of the structure of the grinding and polishing module;

[0024] Figure 4 yes Figure 3 A schematic diagram of the structure of the grinding and polishing components;

[0025] Figure 5 yes Figure 4 Schematic diagram of the installation structure of the pressure regulating mechanism;

[0026] Figure 6 yes Figure 5 A cross-sectional view of the installation structure of the pressure regulating mechanism;

[0027] Figure 7 yes Figure 1 A schematic diagram of the installation structure of the laser detection unit;

[0028] Figure 8 yes Figure 1 Schematic diagram of the camera detection structure in . DETAILED DESCRIPTION

[0029] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described in detail with reference to the accompanying drawings.

[0030] In the description of the invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, rather than indicating or implying 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 invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or a chemical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0032] See also Figures 1 to 8 An embodiment of the present invention discloses an automated maintenance system for an O-ring groove on a reactor pressure vessel top cover, comprising a trolley body 1, a grinding and polishing module 2, a dust collection device 3 and a surface detection module. The automated maintenance system for an O-ring groove on a reactor pressure vessel top cover uses an existing annular track installed on the pressure vessel top cover as a guide component, and the trolley body 1 is installed on the annular track to drive the overall structure to move in a circular direction along the annular track. The O-ring groove is located at the upper part of the annular track. While the trolley body 1 is moving, the grinding and polishing module 2 can grind and polish the O-ring groove. The dust collection device 3 simultaneously collects dust to prevent dust from falling. The surface detection module simultaneously performs damage detection or records the grinding and polishing conditions of the O-ring groove. The automated maintenance system for an O-ring groove on a reactor pressure vessel top cover of the present invention makes full use of the existing annular track on the pressure vessel top cover, and there is no need to modify the grinding device, making the installation of the device more convenient.

[0033] The trolley body 1 includes a walking assembly 11 and a trolley box 12, and the walking assembly 11 is installed on the trolley box 12. The walking assembly 11 is responsible for driving the walking and controlling the direction, and the trolley box 12 is used to provide an installation foundation. The grinding and polishing module 2 includes a driving assembly 21, a grinding and polishing assembly 22 and a pressure regulating mechanism 23 installed on the trolley box 12, the driving assembly 21 is connected to the grinding and polishing assembly 22 for driving, and the pressure regulating mechanism 23 is elastically connected to the grinding and polishing assembly 22 to adjust the pressure between the grinding and polishing assembly 22 and the O-ring groove. The driving assembly 21 is used to drive the grinding and polishing assembly 22 to operate, and the pressure regulating mechanism 23 is used to adjust the pressure between the grinding and polishing assembly 22 and the O-ring groove to ensure that the grinding and polishing assembly 22 always adapts to the height of the O-ring groove in the process of continuous loss reduction. The dust suction device 3 is fixedly arranged on the upper part of the trolley box 12 at the rear end of the grinding and polishing module 2, and is connected to the grinding and polishing module 2 through a pipeline for dust suction. The surface detection module is fixedly arranged on the upper part of the trolley box 12 at the rear end of the dust suction device 3. The trolley housing 12 is an arc-shaped structure, and the grinding and polishing module 2, the dust collecting device 3 and the surface detection module are located on the same arc, which is adapted to the shape of the circular track.

[0034] It can be understood that in this embodiment, the direction of travel of the vehicle body 1 is defined as the front end, and vice versa as the rear end. In some other embodiments, the direction of travel of the vehicle body 1 can be defined as the rear end, and vice versa as the front end.

[0035] like Figure 2 As shown, in some embodiments, the walking assembly 11 includes a driving box 111, at least one driving wheel 112 and a plurality of driven wheels 113, the driving box 111 is arranged inside the trolley box 12 and connected to the driving wheel 112, the driving wheel 112 is partially arranged inside the trolley box 12 and partially exposed at the bottom of the trolley box 12, and a plurality of driven wheels 113 are symmetrically connected to the bottom of the trolley box 12. The driving wheel 112 is used to contact with the bottom surface of the circular track for walking, and the driven wheel 113 is used to contact with the side of the track for following, and can also maintain walking stability. Among them, the number of driving wheels 112 can be set as needed, such as two, three, four, etc. The number of driven wheels 113 can also be set as needed, preferably symmetrically, for example, at least one driven wheel 113 is respectively provided on both sides of the front end of the trolley box 12, and at least one driven wheel 113 is respectively provided on both sides of the rear end of the trolley box 12. The driving box 111 is a motor drive structure, which is only briefly illustrated in the figure, and is specifically a prior art, which will not be repeated here.

[0036] like Figure 3 and Figure 4As shown, in some embodiments, the grinding and polishing assembly 22 includes a base frame 221 and a grinding and polishing box 222. The base frame 221 is fixedly connected to the trolley box 12, and the grinding and polishing box 222 is elastically connected to the base frame 221 through a pressure regulating mechanism 23. The base frame 221 is used to provide installation support, and the grinding and polishing box 222 realizes the main grinding and polishing function.

[0037] In some embodiments, the grinding and polishing box 222 includes a box lower part 222-1 and a grinding box 222-2 / polishing box, the grinding box 222-2 / polishing box is detachably connected to the box lower part 222-1, and is detachably connected to the driving assembly 21, and the box lower part 222-1 is elastically connected to the base frame 221 through a pressure regulating mechanism 23. Among them, the upper end of the box lower part 222-1 is open, and a avoidance space is provided in the box lower part 222-1 for the grinding box 222-2 / polishing box to operate. When grinding operation is required, the grinding box 222-2 is connected and fixed to the box lower part 222-1. When polishing operation is required, the polishing box is connected and fixed to the box lower part 222-1. The modular grinding box 222-2 / polishing box is used, and the grinding wheel and polishing wheel can be flexibly replaced according to the size and shape requirements of the ring groove. The grinding box 222-2 / polishing box is connected to the lower part of the box 222-1 by snap-fit, which can be quickly and conveniently replaced, has strong adaptability, and is easy to disassemble and maintain. Figure 4 As shown, the figure only shows the matching structure between the grinding box 222-2 and the lower part of the box body 222-1, and the structure of the polishing box is the same and is no longer shown.

[0038] The grinding box 222-2 and the polishing box are both cylindrical structures with upper and lower openings. The grinding box 222-2 includes a frame, a grinding wheel and a second gear. The grinding wheel is arranged inside the frame, and the second gear is arranged outside the frame. The grinding wheel is connected to the second gear. The polishing box is similar, including a polishing wheel, a frame and a second gear. The grinding wheel and the polishing wheel are matched with the through groove. The grinding wheel and the polishing wheel are driven by the driving assembly 21. Among them, since the O-ring groove is usually two parallel, two grinding wheels and polishing wheels can be set at the corresponding positions at the same time. When grinding or polishing operations, they can be performed at one time, saving operation steps and time.

[0039] The grinding box 222-2 and the polishing box are provided with a brush 223 on the upper part, which can be used to clean the dust of the O-ring groove after grinding and polishing. A dust hood 224 is provided on one side of the lower part 222-1 of the box body, and the dust hood 224 is connected to the dust collection device 3 through a pipeline, and the pipeline is a hose. The dust generated during the grinding and polishing process enters the pipeline through the dust hood 224, and finally enters the dust collection device 3 for collection. The matching dust collection device 3 can suck away the dust from grinding and polishing in time, which can ensure a clean environment and reduce dust pollution. Among them, the dust collection device 3 is a prior art and will not be described in detail here.

[0040] like Figure 5 and Figure 6 As shown, in some embodiments, the pressure regulating mechanism 23 includes a guide assembly 231, a linear bearing 232, a guide shaft 233 and an elastic member 234. The guide assembly 231 is respectively connected to the base frame 221 and the polishing box 222 for linear motion. The first end of the guide shaft 233 is slidably connected with the linear bearing 232, and the second end of the guide shaft 233 is fixedly connected with the polishing box 222. The elastic member 234 is sleeved on the guide shaft 233. The first end of the elastic member 234 abuts against the base frame 221 through the linear bearing 232, and the second end of the elastic member 234 abuts against the polishing box 222 through the guide shaft 233. Among them, the guide assembly 231 includes two, which are symmetrically arranged on both sides of the polishing box 222, respectively, to guide the polishing box 222 to make linear motion. The guide assembly 231 can be a linear guide assembly, including a guide rail and a slider. The guide rail is fixedly connected to the base frame 221, and the slider is fixedly connected to the polishing box 222. Or the guide rail is fixedly connected to the grinding and polishing box 222, and the slider is fixedly connected to the base frame 221. The elastic member 234 can be a spring, and the contact pressure between the grinding wheel / polishing wheel and the surface of the O-ring groove can be accurately controlled by the spring pressure regulating mechanism 23, so that the grinding is more uniform and it is not easy to cause secondary damage to the surface.

[0041] In some embodiments, the pressure regulating mechanism 23 further includes an adjusting nut 235, which is threadedly connected to the guide shaft 233 and abuts against the second end of the elastic member 234. The adjusting nut 235 can adjust the compression amount of the elastic member 234, thereby adjusting the contact pressure between the grinding and polishing box 222 and the bottom surface of the O-ring groove.

[0042] In some embodiments, the driving assembly 21 includes a driving motor, a reducer 211 and a first gear 212. The driving motor is connected to the reducer 211, and the first gear 212 is connected to the reducer 211 and connected to the second gear external to the grinding and polishing assembly 22 through a synchronous belt 213. The driving motor is arranged outside the trolley box 12, which is not shown in the figure. The reducer 211 is a prior art and will not be described in detail here.

[0043] like Figure 7 and Figure 8As shown, in some embodiments, the surface detection module includes a laser detection unit 4 and / or a camera detection structure 5, and the laser detection unit 4 and / or the camera detection structure 5 are arranged at intervals and are respectively fixedly connected to the trolley box 12. The laser detection unit 4 is a laser contour detector, which detects the polished O-ring groove surface. The laser detection unit 4 uses a line laser scanning method to measure the three-dimensional morphology of the ring groove contour through reflected optical imaging, and can automatically complete the geometric detection and recording of the ring groove surface before and after grinding, providing a reliable basis for evaluating the grinding quality. The present invention improves the efficiency and accuracy of O-ring groove inspection through automated damage detection technology, while greatly reducing the time operators spend near the radiation source, thereby reducing their radiation dose.

[0044] The camera detection structure 5 can shoot, detect and record the surface of the O-ring groove. The camera detection structure 5 may include a camera 51 and an adjustment component 52. The camera 51 is fixedly connected to the adjustment component 52. The adjustment component 52 is used to adjust the shooting angle and height of the camera 51. The adjustment component 52 may use existing technologies such as a camera pan head, and the present invention will not be described in detail here.

[0045] In some embodiments, the surface detection module further includes two mounting rails 6, the mounting rails 6 are directly or indirectly fixedly connected to the top of the trolley box 12, and the laser detection unit 4 is slidably connected to the mounting rails 6. The surface detection module can adjust its position through the two mounting rails 6. The laser detection unit 4 can detect one O-ring groove at a time. When another O-ring groove needs to be detected, the laser detection unit 4 needs to be moved to the other side through the mounting rails 6. It can be understood that in some other embodiments, in order to save detection steps, two laser detection units 4 can be used to synchronously detect two O-ring grooves.

[0046] like Figure 1 , Figure 3 and Figure 7 As shown, in some embodiments, in order to maintain stable operation, at least one top guide assembly 7 is further included, and the top guide assembly 7 is fixedly connected to the trolley housing 12 and rolls against the outer side wall or the inner side wall of the two O-ring grooves. Preferably, the top guide assembly 7 includes two, which are symmetrically arranged at the front end and the rear end of the trolley housing 12. For example, at least one top guide assembly 7 is fixed to the bottom frame 221 of the grinding and polishing assembly 22, and at least one top guide assembly 7 is fixed to the laser detection unit 4.

[0047] Among them, the top guide assembly 7 may include at least two support rods 71, at least two guide wheels 72, at least two locking blocks 73 and a spacing adjustment rod 74, each support rod 71 is set through the trolley box 12, and is detachably connected to the trolley box 12 through the locking block 73. The spacing adjustment rod 74 is respectively connected to the upper part of the two support rods 71 ​​to adjust the spacing, and at least one guide wheel 72 is arranged on the top of the support rod 71. The guide wheel 72 is used to abut against the guide surface of the O-shaped track. The two guide wheels 72 are respectively located on different O-shaped tracks. The spacing adjustment rod 74 can ensure that the two driven wheels 113 are close to the guide surface, maximize the guiding effect and prevent the device from overturning as a whole. Preferably, in this embodiment, three guide wheels 72 are a group (one guide wheel is set on one support rod, and two guide wheels are set on the other support rod), forming a stable triangular mechanical structure, which can maintain the stable operation of the device and prevent the device from overturning as a whole. Among them, the guide wheel 72 can use a plastic-coated bearing to prevent scratches on the side walls of the O-ring groove. The bearing is a double-sided sealed bearing. Even if the steel ball inside the bearing is broken, foreign matter will still remain inside the bearing.

[0048] The reactor pressure vessel top cover O-ring groove automatic maintenance system of the present invention has a high overall automation level. After one installation, the entire process of grinding, polishing and testing can be completed by remote control. It can reduce manual participation and effectively reduce the radiation dose received by operators. While improving operating efficiency, it also ensures personal safety.

[0049] By implementing the present invention, the following beneficial effects are achieved:

[0050] The automated maintenance system for the O-ring groove of the reactor pressure vessel top cover of the present invention automatically moves on the existing circular track through the walking component 11, automatically grinds or polishes the O-ring groove through the grinding and polishing module 2, and the dust suction device 3 processes the dust generated by the grinding or polishing. The surface detection module can monitor the grinding or polishing status, and can realize fully automatic grinding and polishing of the O-ring groove and perform damage detection, thereby reducing the radiation dose and labor intensity of the operating and maintenance personnel and improving work efficiency.

[0051] It can be understood that the above embodiments only express the preferred implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the present invention, the above embodiments or technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the present invention, that is, the embodiments described in "some embodiments" can be freely combined with any of the above and below embodiments. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should fall within the scope of the claims of the present invention.

Claims

1. A reactor pressure vessel top cover O-ring groove automatic maintenance system, characterized in that: include: The trolley body (1) comprises a travel assembly (11) and a trolley box (12), wherein the travel assembly (11) is mounted on the trolley box (12); A grinding and polishing module (2) comprises a driving assembly (21), a grinding and polishing assembly (22) and a pressure regulating mechanism (23) installed on the trolley housing (12); the driving assembly (21) is connected to the grinding and polishing assembly (22) for driving; the pressure regulating mechanism (23) is elastically connected to the grinding and polishing assembly (22) to adjust the contact pressure between the grinding and polishing assembly (22) and the O-ring groove; A surface detection module is fixedly arranged on the upper part of the trolley box (12) at the rear end of the grinding and polishing module (2) to automatically detect the surface condition of the O-ring groove.

2. The reactor pressure vessel top cover O-ring groove automatic maintenance system according to claim 1, characterized in that: The grinding and polishing assembly (22) comprises a base frame (221) and a grinding and polishing box (222); the base frame (221) is fixedly connected to the trolley box (12); and the grinding and polishing box (222) is elastically connected to the base frame (221) via the pressure regulating mechanism (23).

3. The reactor pressure vessel top cover O-ring groove automatic maintenance system according to claim 2, characterized in that: The grinding and polishing box (222) comprises a box body lower part (222-1) and a grinding box (222-2) / polishing box. The grinding box (222-2) / polishing box is detachably connected to the box body lower part (222-1) and is detachably connected to the driving assembly (21). The box body lower part (222-1) is elastically connected to the base frame (221) via the pressure regulating mechanism (23).

4. The reactor pressure vessel top cover O-ring groove automated maintenance system according to claim 3, characterized in that: The pressure regulating mechanism (23) comprises a guide assembly (231), a linear bearing (232), a guide shaft (233) and an elastic member (234); the guide assembly (231) is respectively connected to the base frame (221) and the grinding and polishing box (222) for linear motion; the first end of the guide shaft (233) is slidably connected with the linear bearing (232); the second end of the guide shaft (233) is fixedly connected with the grinding and polishing box (222); the elastic member (234) is sleeved on the guide shaft (233); the first end of the elastic member (234) is in contact with the base frame (221) through the linear bearing (232); the second end of the elastic member (234) is in contact with the grinding and polishing box (222) through the guide shaft (233).

5. The reactor pressure vessel top cover O-ring groove automatic maintenance system according to claim 4, characterized in that: The pressure regulating mechanism (23) further comprises an adjusting nut (235), wherein the adjusting nut (235) is threadedly connected to the guide shaft (233) and abuts against the second end of the elastic member (234).

6. The reactor pressure vessel top cover O-ring groove automated maintenance system according to any one of claims 1 to 5, characterized in that: The driving assembly (21) comprises a driving motor, a reducer (211) and a first gear (212); the driving motor is connected to the reducer (211); the first gear (212) is connected to the reducer (211) and is connected to a second gear external to the grinding and polishing assembly (22) via a synchronous belt (213).

7. The reactor pressure vessel top cover O-ring groove automated maintenance system according to any one of claims 1 to 5, characterized in that: The surface detection module comprises a laser detection unit (4) and / or a camera detection structure (5), and the laser detection units (4) and / or the camera detection structure (5) are arranged at intervals and are respectively fixedly connected to the trolley box (12).

8. The reactor pressure vessel top cover O-ring groove automatic maintenance system according to claim 7, characterized in that: The surface detection module further comprises two mounting rails (6), wherein the mounting rails (6) are directly or indirectly fixedly connected to the top of the trolley box (12), and the laser detection unit (4) is slidably connected to the mounting rails (6).

9. The reactor pressure vessel top cover O-ring groove automated maintenance system according to any one of claims 1 to 5, characterized in that: It also comprises a dust suction device, which is fixedly arranged on the upper part of the trolley box (12) at the rear end of the grinding and polishing module (2) and is connected to the grinding and polishing assembly (22) through a pipeline for dust suction.

10. The reactor pressure vessel top cover O-ring groove automated maintenance system according to any one of claims 1 to 5, characterized in that: It also comprises at least one top guide assembly (7), wherein the top guide assembly (7) is fixedly connected to the trolley box (12) and is in rolling contact with the outer side walls or the inner side walls of the two O-ring grooves.

Images