Thrust disc maintenance device and nuclear power plant maintenance equipment

Abstract

The utility model provides a kind of thrust disc maintenance device and nuclear power plant overhaul equipment, wherein thrust disc maintenance device includes: transport auxiliary mechanism, is maintained mechanism on transport auxiliary mechanism, is maintained mechanism inside the protective buffer mechanism and with the inside communication of maintained mechanism oil filling and oil discharging mechanism;Wherein, transport auxiliary mechanism is used to assist moving maintenance mechanism, maintained mechanism is used to hold lubricating oil and accommodate thrust disc, protective buffer mechanism is connected to the inner wall of maintained mechanism to isolate thrust disc and inner wall, oil filling and oil discharging mechanism is used to inject or discharge lubricating oil maintained mechanism. By adopting the above technical scheme, achieve the excellent effect of rust-proof protection for thrust disc;Create safe, stable and interference-free maintenance environment for thrust disc;Ensure that thrust disc is not interfered and harmed by external adverse factors within the maintenance period;Optimize the man-machine interaction experience and work efficiency of maintenance operation;Realize the rapid deployment of maintenance device in the complex operation environment of nuclear power plant.

Description

Technical Field

[0001] This utility model relates to the technical field of nuclear power plant maintenance equipment, and more specifically, to a thrust disc maintenance device and nuclear power plant maintenance equipment. Background Technology

[0002] The thrust disc of the main pump motor is a core functional component of the motor structure, precisely positioned at the non-drive end of the motor shaft. Given its critical axial force and non-drive end radial force bearing function within the motor's operating system, even minor physical impacts or chemical corrosion can significantly negatively impact the overall performance of the thrust disc assembly. Therefore, after disassembling the thrust disc during the full motor inspection process, implementing scientific, efficient, and reliable maintenance measures has become a crucial and highly anticipated technical challenge in the nuclear power field.

[0003] Currently, the industry's standard maintenance strategy mainly involves uniformly applying a grease medium to all outer surfaces of the thrust plate to create a preliminary physical barrier against rust. Simultaneously, rubber is used to comprehensively cover the cylindrical surface and the upper and lower thrust surfaces to effectively prevent damage from potential accidental impacts. Furthermore, following a predetermined time schedule, the thrust plate is periodically lifted using specialized lifting equipment for a thorough cleaning of the grease coating. Simultaneously, a detailed inspection of the rust condition on each surface is conducted. After the inspection is completed, the grease application and rubber coating process is repeated.

[0004] However, due to the complexity of actual working conditions and the inherent limitations of the operating process, it is difficult to ensure that the grease is evenly distributed across every minute surface area of ​​the thrust disk in a seamless and comprehensive manner during the grease coating process. This results in some areas of the thrust disk being exposed without grease protection. Furthermore, because it is difficult to maintain a precisely constant temperature and humidity environment inside the plant, and because nuclear power plants are mostly located in coastal areas, the exposed surfaces of the thrust disk are prone to moisture accumulation and condensation due to fluctuations in ambient temperature and humidity. This moisture then combines with salt to cause chemical corrosion, resulting in irreversible damage to the structural integrity and surface precision of the thrust disk.

[0005] In addition, due to the combined effects of differences in the chemical stability of the selected greases, differences in the anti-aging properties of the rubber materials, and the continuous corrosive effect of salt in the air, greases are prone to deterioration in chemical properties and physical performance after a certain service period, losing their initial long-term protective effect on the thrust disk surface and failing to provide continuous, stable and reliable protection for the thrust disk.

[0006] Furthermore, the frequent use of lifting equipment to hoist the thrust plate for routine inspections increases the risk of accidental damage to the surface of the thrust plate due to multiple factors such as human error, sudden equipment failure, or interference from uncontrollable environmental factors, posing a potential threat to the surface quality and structural reliability of the thrust plate.

[0007] In summary, the maintenance of the thrust disc of the existing main pump motor has technical problems such as high protection difficulty and poor effectiveness. Utility Model Content

[0008] The purpose of this utility model is to provide a thrust disk maintenance device and nuclear power plant maintenance equipment to solve the technical problems of high difficulty and poor effectiveness in the maintenance and protection of thrust disks in the prior art.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0010] In a first aspect, a thrust disc maintenance device is provided, comprising:

[0011] The system includes a transport auxiliary mechanism, a maintenance mechanism mounted on the transport auxiliary mechanism, a protective buffer mechanism located inside the maintenance mechanism, and an oil filling and draining mechanism communicating with the interior of the maintenance mechanism. The transport auxiliary mechanism assists in moving the maintenance mechanism, the maintenance mechanism holds lubricating oil and houses the thrust plate, the protective buffer mechanism is connected to the inner wall of the maintenance mechanism to isolate the thrust plate from the inner wall, and the oil filling and draining mechanism injects or discharges lubricating oil into or out of the maintenance mechanism.

[0012] First, this embodiment designs and develops a special container architecture that ensures the thrust plate is completely submerged in lubricating oil (lubricating oil medium) in the maintenance mechanism. Based on this, it completely abandons the conventional protection paradigm of grease coating and rubber covering in the traditional maintenance mode, thereby achieving excellent performance of 100% rust prevention protection for the thrust plate in all directions and without dead angles.

[0013] Secondly, thanks to the ingenious structural design and unique functional integration of this maintenance mechanism, the multiple periodic inspection procedures required by the traditional maintenance model are substantially reduced or even completely avoided. This eliminates the risk of damage to the thrust plate surface caused by frequent lifting operations, creating a safe, stable and interference-free maintenance environment for the thrust plate.

[0014] Third, by utilizing the enclosed and independent maintenance space built by the maintenance organization, the possibility of accidental damage to the thrust plate surface caused by complex working conditions arising from cross-operations and external uncertainties is effectively reduced, ensuring that the thrust plate is protected from interference and damage from adverse external factors during the maintenance cycle.

[0015] Fourth, by carefully equipping maintenance facilities with oil filling and draining mechanisms that feature efficient flow control and precise control, the convenience, efficiency, and precision of maintenance operations are significantly improved through structural optimization and functional integration, greatly enhancing the human-machine interaction experience and work efficiency of maintenance operations.

[0016] Fifth, an innovative auxiliary mobile mechanism with good adaptability is installed on the external structural system of the maintenance unit. Through the ingenious integration of mechanical structure and ergonomics, the mobility, flexibility and operability of the device under different working scenarios and spatial layouts are greatly enhanced, realizing the unimpeded transfer and rapid deployment of the maintenance device in the complex working environment of nuclear power plants.

[0017] In one embodiment, the maintenance mechanism includes a cylinder, a cover, and a locking device detachably connecting the cylinder and the cover. The shape and size of the cylinder match the shape and size of the thrust disc. The cover is used to cover the cylinder, and the locking device detachably connects the cylinder and the cover.

[0018] In one embodiment, the cover has an exhaust hole structure.

[0019] In one embodiment, the cylindrical body has a reinforcing rib structure on its peripheral wall.

[0020] In one embodiment, the maintenance mechanism further includes a pad located at the inner bottom of the cylinder, the pad having a circular hole; and / or, the pad having a flow guide groove.

[0021] In one embodiment, the protective buffer mechanism includes a plurality of damping buffers connected to the inner wall of the cylinder, the plurality of damping buffers being evenly arranged along the circumference of the cylinder, and a protective pad being provided at one end of the damping buffer near the center of the cylinder.

[0022] In one embodiment, the oil filling and draining mechanism includes an oil drain valve, an oil drain pump, an oil drain pipeline, an oil drain filter, an oil filling pump, an oil filling pipeline, an oil filling filter, and an oil holding container. The oil drain valve is located at the bottom of the maintenance mechanism and communicates with the interior of the maintenance mechanism. The oil drain valve, the oil drain pump, and the oil drain filter are connected in sequence through the oil drain pipeline, and the oil drain filter is connected to the oil holding container through the oil drain pipeline. The oil filling pump and the oil filling filter are connected through the oil filling pipeline, and the oil filling pump is connected to the oil holding container through the oil filling pipeline. The oil filling filter is connected to the interior of the maintenance mechanism through the oil filling pipeline.

[0023] In one embodiment, the transport assistance mechanism includes a trolley and omnidirectional wheels and directional wheels located at the bottom of the trolley.

[0024] In one embodiment, the transport assistance mechanism includes feet located at the bottom of the trolley.

[0025] Secondly, a nuclear power plant maintenance equipment is provided, including a main body of the nuclear power plant maintenance equipment and the aforementioned thrust plate maintenance device, wherein the thrust plate maintenance device is disposed on the main body of the nuclear power plant maintenance equipment.

[0026] By adopting the above technical solution, in addition to the advantages of the inference disk maintenance device of the above embodiment, the nuclear power plant maintenance equipment of this embodiment also has the advantage of good maintenance effect. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a three-dimensional structural diagram of the thrust disc maintenance device provided in this embodiment of the utility model.

[0029] Figure 2 This is a schematic diagram of the use of the thrust disc maintenance device provided in this embodiment of the utility model.

[0030] Figure 3 This is a top view of the cylinder provided in an embodiment of this utility model.

[0031] Figure 4 This is a front view of the thrust disc maintenance device provided in this embodiment of the utility model.

[0032] Figure 5 This is a top view of the thrust disc maintenance device provided in this embodiment of the utility model.

[0033] Figure 6 This is a cross-sectional view of the thrust disc maintenance device provided in this embodiment of the utility model.

[0034] Figure 7 This is a three-dimensional structural diagram of the pad provided in an embodiment of this utility model.

[0035] The labels for the attached figures are as follows:

[0036] 100. Thrust disc maintenance device;

[0037] 1. Transportation auxiliary mechanism; 2. Maintenance mechanism; 3. Protective buffer mechanism; 4. Oil filling and draining mechanism; 5. Pad;

[0038] 11. Trolley; 12. Casters; 13. Fixed casters; 14. Foot; 15. Load-bearing plate; 16. Handle; 21. Cylinder; 22. Cover; 23. Locking device; 31. Damping buffer; 32. Protective gasket; 41. Oil drain valve; 42. Oil drain pump; 43. Oil drain line; 44. Oil drain filter; 45. Oil filling pump; 46. Oil filling line; 47. Oil filling filter; 48. Oil container; 51. Circular hole;

[0039] 221. Vent structure; 211. Reinforcing rib structure. Detailed Implementation

[0040] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0041] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be located directly on or indirectly on the other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to the other component.

[0042] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or the number of technical features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. The specific implementation of this utility model is described in more detail below with reference to specific embodiments:

[0044] like Figures 1 to 3As shown in the figure, the thrust disc maintenance device 100 provided in this embodiment of the present invention innovatively proposes an innovative concept of using lubricating oil immersion as the core maintenance strategy for the thrust disc, replacing the conventional practices of applying grease and covering with rubber to prevent impact with a completely different technical approach. Based on the unique technical requirements, stringent operating condition adaptability requirements, and long-term reliability requirements of the main pump motor thrust disc maintenance work, this invention pioneered the introduction of the cutting-edge concept of oil-filled maintenance into the maintenance practice system of power plant equipment in the nuclear power field. The overall structural dimensions and spatial layout of the thrust disc maintenance device 100 provided in this embodiment have undergone multiple rounds of precise calculations, simulations, and optimization iterations to ensure that it can perfectly fit and seamlessly connect with the inherent structural characteristics, installation space limitations, and operation and maintenance process specifications of the main pump motor. At the same time, adhering to a systematic design thinking, the device fully considers the diverse needs of transportation convenience, storage stability, operation convenience, and maintenance simplicity in the actual operation and maintenance scenario of a nuclear power plant, and cleverly integrates multiple functional modules into the overall architecture design of the device, achieving an innovative breakthrough in multi-functional integration and integrated design. Furthermore, from the perspective of safety assurance throughout the entire life cycle of the device, a variety of key safety assurance elements are innovatively introduced. Through the construction of multi-dimensional and multi-level safety protection strategies, the safety reliability and risk resistance capabilities of the device in dealing with complex and ever-changing nuclear power plant operating conditions and extreme environmental challenges are effectively improved.

[0045] The thrust disc maintenance device 100 provided in this embodiment includes:

[0046] The system includes a transport auxiliary mechanism 1, a maintenance mechanism 2 mounted on the transport auxiliary mechanism 1, a protective buffer mechanism 3 located inside the maintenance mechanism 2, and an oil filling and draining mechanism 4 connected to the interior of the maintenance mechanism 2. The transport auxiliary mechanism 1 is used to assist in moving the maintenance mechanism 2. The maintenance mechanism 2 is used to hold lubricating oil and accommodate the thrust plate. The protective buffer mechanism 3 is connected to the inner wall of the maintenance mechanism 2 to isolate the thrust plate from the inner wall. The oil filling and draining mechanism 4 is used to inject or drain lubricating oil into or out of the maintenance mechanism 2.

[0047] Specifically, the transportation auxiliary mechanism 1 refers to the mechanism used to assist the mobile maintenance mechanism 2; the transportation auxiliary mechanism 1 enables the maintenance mechanism 2 to move around the site, so that the maintenance mechanism 2 can be moved to the target location conveniently and quickly.

[0048] Maintenance mechanism 2 refers to the mechanism used for maintaining the thrust plate; maintenance mechanism 2 has a container structure that can hold lubricating oil, and the shape and size of maintenance mechanism 2 match the shape and size of the thrust plate so that the thrust plate can be just housed inside maintenance mechanism 2; the level of lubricating oil inside maintenance mechanism 2 is just enough to submerge the thrust plate.

[0049] The protective buffer mechanism 3 is a mechanism used to prevent the thrust plate from being damaged inside the maintenance mechanism 2. The protective buffer mechanism 3 is connected to the inner wall of the maintenance mechanism 2 and is used to isolate the thrust plate from the inner wall, so as to prevent the thrust plate from directly contacting the inner wall of the maintenance mechanism 2.

[0050] The oil filling and discharging mechanism 4 refers to the mechanism used to inject lubricating oil into the maintenance mechanism 2 and to discharge lubricating oil from the maintenance mechanism 2.

[0051] The working principle of the thrust disc maintenance device 100 provided in this embodiment is as follows:

[0052] The thrust plate maintenance device 100 is transferred to the target position via the transport auxiliary mechanism 1, so that the thrust plate can be placed in the maintenance mechanism 2. The thrust plate is located in multiple protective buffer mechanisms 3 inside the maintenance mechanism 2 to isolate the thrust plate from the inner wall of the maintenance mechanism 2 and reduce damage to the thrust plate. The oil filling and draining mechanism 4 injects lubricating oil into the maintenance mechanism 2 to immerse the thrust plate. In this way, the maintenance of the thrust plate is achieved.

[0053] By adopting the above technical solution:

[0054] First, this embodiment designs and develops a special container architecture that ensures the thrust plate is completely submerged in lubricating oil (lubricating oil medium) in the maintenance mechanism 2. Based on this, it completely abandons the conventional protection paradigm of grease coating and rubber covering in the traditional maintenance mode, thereby achieving excellent performance of 100% anti-rust protection for the thrust plate in all directions and without dead angles.

[0055] Secondly, thanks to the ingenious structural design and unique functional integration of the maintenance mechanism 2, the multiple periodic inspection procedures required by the traditional maintenance model are substantially reduced or even completely avoided, eliminating the risk of damage to the thrust plate surface caused by frequent lifting operations from the root, and creating a safe, stable and interference-free maintenance environment for the thrust plate.

[0056] Third, by utilizing the enclosed and independent maintenance space constructed by maintenance facility 2, the possibility of accidental damage to the thrust plate surface caused by complex working conditions arising from cross-operations and external uncertainties is effectively reduced, ensuring that the thrust plate is protected from interference and damage from adverse external factors during the maintenance cycle.

[0057] Fourth, the maintenance unit 2 is carefully equipped with an oil filling and draining mechanism 4 that has efficient flow and precise control characteristics. Through structural optimization and functional integration, the convenience, efficiency and precision of the maintenance operation process are significantly improved, greatly optimizing the human-machine interaction experience and work efficiency of maintenance operations.

[0058] Fifth, an innovative auxiliary moving mechanism with good adaptability is installed on the external structure system of maintenance mechanism 2. Through the ingenious integration of mechanical structure and ergonomics, the mobility, flexibility and operability of the device under different working scenarios and spatial layouts are greatly enhanced, realizing the unimpeded transfer and rapid deployment of the maintenance device in the complex working environment of nuclear power plants.

[0059] like Figures 4 to 6 In one embodiment, the maintenance mechanism 2 includes a cylinder 21, a cover 22, and a locking device 23 detachably connecting the cylinder 21 and the cover 22. The shape and size of the cylinder 21 match the shape and size of the thrust plate. The cover 22 is used to cover the cylinder 21, and the locking device 23 detachably connects the cylinder 21 and the cover 22. It is understood that the cylinder 21 has a receiving space for holding lubricating oil and accommodating the thrust plate, and the top of the cylinder 21 has an opening communicating with the interior, to which the cover 22 closes.

[0060] Specifically, the cylinder 21 is made of high-quality stainless steel plate of a predetermined thickness and is manufactured into a cylindrical main structure with a predetermined height and inner diameter using precision CNC machining technology. This cylinder serves as the core container of the entire thrust plate maintenance device, bearing the crucial responsibility of housing the thrust plate and storing lubricating oil. To enhance its internal rust prevention and external environmental adaptability, the interior of the cylinder 21 employs an advanced galvanizing process to form a dense rust-resistant coating; the exterior is uniformly coated with a special anti-corrosion paint possessing excellent weather resistance and corrosion resistance. Through rigorous engineering calculations and practical verification, the specific dimensions of this oil tank and the main pump motor thrust plate exhibit a high degree of compatibility. After injecting an appropriate amount of lubricating oil, it can construct a stable, reliable, and nearly ideally isolated rust-resistant protective environment for the thrust plate, fundamentally eliminating the potential risk of rust caused by long-term exposure to air.

[0061] The lid 22 is made of aluminum alloy of a predetermined thickness and is precision-machined using CNC technology, possessing excellent corrosion resistance and mechanical strength. Three precision locking devices 23 with quick-locking and unlocking functions are carefully installed at specific locations on the cylinder 21. These locking devices 23 ensure a tight fit and secure locking between the lid 22 and the cylinder 21 while maintaining ease of operation, thereby effectively guaranteeing the airtightness and isolation of the container's internal space.

[0062] By adopting the above technical solutions, the cover 22, the cylinder 21 and the locking device 23 can construct a stable, reliable and almost ideal isolation environment for the thrust disc to prevent corrosion, fundamentally eliminating the potential risk of corrosion caused by long-term exposure to air.

[0063] In one embodiment, the cover 22 has an exhaust hole structure 221.

[0064] Specifically, a vent structure 221 with a specific aperture and number of holes is cleverly provided on the cover 22. This ingeniously designed vent system not only effectively balances the internal and external pressure differences when the internal pressure changes dynamically, preventing adverse effects on the structural integrity of the container or its internal components due to sudden pressure changes; but also effectively prevents moisture from condensing into water droplets and adhering to the thrust plate surface through precise control of internal air humidity, thereby further optimizing the maintenance effect on the thrust plate and maintaining the long-term stability of lubricating oil quality and consistency of lubrication performance. Optionally, the vent structure 221 can be an vent valve.

[0065] By adopting the above technical solutions, the maintenance effect of the thrust disc has been further improved.

[0066] In one embodiment, the cylindrical body 21 has a reinforcing rib structure 211 on its peripheral wall.

[0067] Specifically, to comprehensively enhance the overall structural strength and deformation resistance of the cylinder 21, two reinforcing ribs 211 of predetermined width and thickness are symmetrically welded at both ends of the cylinder 21 using high-strength stainless steel. These reinforcing ribs 211 are meticulously designed in terms of spatial layout, enabling precise reinforcement and effective support of the cylinder 21 structure based on the stress distribution characteristics under different stress conditions. This ensures that the cylinder 21 maintains a stable shape and reliable mechanical properties even under complex mechanical environments such as internal oil pressure fluctuations, external impact loads, and long-term static loads, providing a solid and reliable physical protective barrier for the internal thrust disc and lubricating oil.

[0068] Please refer to the following: Figure 7 In one embodiment, the maintenance mechanism 2 further includes a pad 5 disposed at the inner bottom of the cylinder 21, the pad 5 having a circular hole; in other embodiments, the pad 5 has a guide groove.

[0069] Specifically, a pad 5 (such as a PP board) of a preset thickness is precisely placed at the bottom of the cylinder 21. A circular hole 51 of a preset diameter is opened in the center of the pad 5, and a spiral guide groove of a preset depth is processed on its surface. This pad 5 plays multiple key roles in the functional architecture of the entire thrust plate maintenance device: First, as a dedicated support platform for the thrust plate, its excellent mechanical properties and flatness precision enable it to stably and accurately support the thrust plate, ensuring that it is always in the preset correct position within the container space, avoiding potential risks caused by positional deviation; Second, through the ingenious design of the central circular hole 51 and the spiral guide groove, a non-contact isolation is cleverly achieved between the thrust plate and the bottom of the cylinder 21, effectively avoiding problems such as localized wear, corrosion, and poor lubricant flow that may occur due to direct contact between the two; Third, with the flow-enhancing effect of the spiral guide groove, the lubricant can be guided to form an efficient and uniform flow field in the bottom area of ​​the thrust plate during the lubricant filling and circulation process, ensuring that all parts of the bottom of the thrust plate are fully wetted, thereby providing it with all-round, no-dead-angle anti-rust protection and excellent lubrication performance.

[0070] Please refer to it again. Figure 3 In one embodiment, the protective buffer mechanism 3 includes a damping buffer 31 connected to the inner wall of the cylinder 21. Multiple damping buffers 31 are evenly arranged along the circumference of the cylinder 21, and a protective pad 32 is provided at one end of the damping buffer 31 near the center of the cylinder 21.

[0071] Specifically, within the circumferential direction of the internal space of the cylinder 21, four damping buffers 31 with high damping characteristics and buffering energy absorption functions are evenly and precisely installed according to the principle of equal angular intervals. The core function of these damping buffers 31 is to provide comprehensive and multi-angle effective reinforcement and precise protection for the thrust head cylindrical surface of the thrust disk placed inside the cylinder 21, preventing accidental collision damage to the thrust disk cylindrical surface due to external vibration, impact, or unexpected shaking or tilting of internal equipment during the transportation and movement of the device.

[0072] To ensure that the damping buffer 31 will not suffer any scratches, wear, or other physical damage to its surface precision and integrity due to friction, collision, or other mechanical actions during contact and interaction with the thrust disk cylindrical surface, an innovative protective gasket 32 ​​is used at the end of the damping buffer 31 near the center of the cylinder 21. The protective gasket 32 ​​can be made of polytetrafluoroethylene (PTFE), a material with extremely low friction coefficient, excellent wear resistance, and corrosion resistance. PTFE, with its unique physicochemical properties, can provide reliable cushioning protection while minimizing frictional resistance and wear risk with the thrust disk cylindrical surface, thereby effectively protecting the high-precision geometry and surface finish of the thrust disk cylindrical surface and ensuring that it remains in optimal working condition throughout long-term maintenance cycles.

[0073] Please refer to it again. Figure 2 In one embodiment, the oil filling and draining mechanism 4 includes an oil drain valve 41, an oil drain pump 42, an oil drain line 43, an oil drain filter 44, an oil filling pump 45, an oil filling line 46, an oil filling filter 47, and an oil container 48. The oil drain valve 41 is located at the bottom of the maintenance mechanism 2 (i.e., the cylinder 21) and communicates with the interior of the maintenance mechanism 2. The oil drain valve 41, the oil drain pump 42, and the oil drain filter 44 are connected in sequence through the oil drain line 43, and the oil drain filter 44 is connected to the oil container 48 through the oil drain line 43. The oil filling pump 45 and the oil filling filter 47 are connected through the oil filling line 46, and the oil filling pump 45 is connected to the oil container 48 through the oil filling line 46. The oil filling filter 47 is connected to the interior of the maintenance mechanism 2 through the oil filling line 46. Preferably, the oil filling filter 47 is connected to the top of the interior of the maintenance mechanism 2 through the oil filling line 46.

[0074] The oil filling and draining mechanism 4 of this thrust disc maintenance device 100 serves as the core functional module for achieving precise supply, circulation purification, and efficient discharge of lubricating oil. It mainly consists of key components such as an oil filling pump 45, an oil filling pipeline 46, an oil drain pump 42, an oil drain pipeline 43, an oil drain filter 44, and an oil container 48. These components are interconnected through precisely designed pipelines and electrical control logic, forming an organically coordinated, highly efficient, and stable oil filling and draining functional system.

[0075] Among them, the drain filter 44 and the filling filter 47 serve as key defenses to ensure the quality of lubricating oil, employing an ultra-high precision filtration standard of 4 microns. During the filling process, the filling filter 47 and the drain filter 44 can perform fine filtration treatment on the lubricating oil injected into and discharged from the maintenance mechanism 2, effectively intercepting and removing any tiny impurities, metal shavings, and other contaminants that may be present. This ensures that the lubricating oil entering the cylinder 21 always maintains a pure and clean quality, providing a solid and reliable medium guarantee for the long-term stable operation and high-precision work of the thrust disc in the lubricating oil environment.

[0076] The oil filling line 46 and the oil drain line 43 are made of braided hoses with high strength, high flexibility, corrosion resistance, and pressure resistance. The unique advantage of this hose material is that it can be easily and quickly connected, bent, and arranged in the complex and ever-changing nuclear power plant operating environment, adapting to the requirements of different spatial layouts and equipment installation positions; at the same time, it can ensure the stable transmission of lubricating oil in the pipeline during the oil filling and draining operation, effectively avoiding leaks, blockages, and other failures caused by pipeline material problems, thereby ensuring the efficient and stable operation and operational safety of the oil filling and draining mechanism 4.

[0077] The filling pump 45 and the discharging pump 42, as the power core of the filling and discharging mechanism 4, have undergone rigorous engineering calculations and performance testing in their selection and parameter settings. Specific parameters include: a professional-grade 1000W drum pump, a stable operating voltage of 220V, a precise operating frequency of 50Hz, an outlet outer diameter range of 25-32mm, a displacement range of 95-150 liters / minute, and a head of no less than 16m. With their powerful output characteristics and precise flow and pressure control capabilities, the filling pump 45 and the discharging pump 42 provide a stable and reliable power source for the circulation and transmission of lubricating oil within the filling and discharging mechanism 4. This ensures that the lubricating oil can circulate and be transmitted efficiently and orderly between various components within the system according to preset flow, pressure, and flow direction requirements, meeting the diverse needs for lubricating oil supply and discharge under different maintenance conditions.

[0078] The oil container 48 adopts a standard 208-liter oil drum conforming to industry standards. Its main function is to serve as a large-capacity storage and stable supply source for lubricating oil, providing sufficient and reliable oil supply for the entire filling and discharging mechanism 4. During system operation, the oil container 48 can replenish fresh and pure lubricating oil to the system in a timely manner according to the working needs of the oil drum pump; at the same time, it receives waste lubricating oil or lubricating oil containing impurities discharged from the oil drum. Before entering the oil container 48, the lubricating oil must be filtered through the oil discharge filter 44; thus realizing the recycling and environmentally friendly treatment of lubricating oil, ensuring that the thrust disc maintenance device 100 can always maintain stable filling and discharging capacity and good working condition during long-term continuous operation.

[0079] At the bottom of the maintenance mechanism 2 is an oil drain valve 41 with high sealing performance and precise flow control. This oil drain valve 41 is horizontally arranged, and its drain outlet is carefully designed to precisely face the handle 16 of the trolley 11. This allows the operator to easily and efficiently control the oil flow and smoothly perform the draining operation. Simultaneously, the overall design of the trolley 11 proactively considered the operating space requirements and ergonomics of the oil drain valve 41, reserving sufficient space and operating channels in advance. This ensures that the oil drain valve 41 is not obstructed or interfered with by any external structure or spatial layout during the entire process of opening, closing, and adjusting the oil flow, thus achieving a perfect balance of smoothness, efficiency, and precision in the draining operation.

[0080] Please refer to it again. Figure 4 In one embodiment, the transport assistance mechanism 1 includes a trolley 11 and casters 12 and directional casters 13 located at the bottom of the trolley 11.

[0081] Specifically, the main body structure of the trolley 11 is made of high-strength square tubing and is meticulously crafted using advanced automated welding technology. This structural design ensures the body has excellent strength and rigidity while cleverly achieving the goal of lightweight structure, effectively improving the mobility, flexibility and maneuverability of the trolley 11 in the complex operating environment of nuclear power plants.

[0082] Two omnidirectional casters 12 and two highly stable directional casters 13 are meticulously installed at the bottom of the vehicle. The selected wheels are professional-grade 6-inch wheels, each of which has undergone rigorous load-bearing performance testing and quality certification, possessing a reliable load-bearing capacity of up to 1 ton. After the wheels are installed and adjusted, the height of the vehicle's bottom from the ground is meticulously designed and optimized, stably controlled at approximately 220mm. This height parameter is not accidental, but rather a comprehensive consideration of the trolley 11's mobility requirements, stability requirements, and compatibility with other equipment or work scenarios during movement. While ensuring that the trolley 11 can smoothly traverse common ground obstacles and uneven areas within nuclear power plants, it effectively guarantees the stability and safety of the entire thrust plate maintenance device 100 during transportation, avoiding accidental tipping or collisions caused by excessive center of gravity or poor mobility.

[0083] In one embodiment, the transport assistance mechanism 1 includes a foot 14 located at the bottom of the trolley 11.

[0084] Specifically, to further enhance the stability and load-bearing redundancy of the trolley 11 in a stationary state, four ingeniously designed and structurally robust cup-shaped feet 14 are innovatively added to the bottom of the vehicle body. When the trolley 11 is parked, these cup-shaped feet 14 can form a stable contact support point with the ground. Through the mechanical principle of multi-point distributed load bearing, they effectively distribute the weight load borne by the vehicle body, greatly improving the anti-tipping ability and load-bearing reliability of the trolley 11 in a stationary state. This provides solid and reliable auxiliary support for the thrust plate maintenance device 100 in loading, unloading, debugging, and long-term static storage operations.

[0085] In one embodiment, a high-strength load-bearing plate 15 is innovatively introduced at the connection points between the omnidirectional wheels 12, the fixed wheels 13, and the cup-shaped feet 14 and the vehicle body for localized reinforcement and overall strengthening. This reinforcement design strategy, combining localized strengthening with overall coordination, significantly improves the structural strength, fatigue resistance, and load-bearing capacity of the connection points. This further optimizes and strengthens the load-bearing performance of the entire trolley 11 under complex stress conditions, enabling it to more safely and reliably support the thrust plate maintenance device 100 and its internal precision components such as the thrust plate. This ensures that the structural integrity of the thrust plate maintenance device 100 and the safety of its internal components are effectively guaranteed throughout the entire process of transportation, transfer, and storage.

[0086] Secondly, a nuclear power plant maintenance equipment is provided, including a main body of the nuclear power plant maintenance equipment and the aforementioned thrust plate maintenance device 100, wherein the thrust plate maintenance device 100 is disposed on the main body of the nuclear power plant maintenance equipment.

[0087] By adopting the above technical solution, in addition to the advantages of the inference disk maintenance device of the above embodiment, the nuclear power plant maintenance equipment of this embodiment also has the advantage of good maintenance effect.

[0088] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A thrust disc maintenance device, characterized in that, include: The system includes a transport auxiliary mechanism, a maintenance mechanism mounted on the transport auxiliary mechanism, a protective buffer mechanism located inside the maintenance mechanism, and an oil filling and draining mechanism communicating with the interior of the maintenance mechanism. The transport auxiliary mechanism assists in moving the maintenance mechanism, the maintenance mechanism holds lubricating oil and houses the thrust plate, the protective buffer mechanism is connected to the inner wall of the maintenance mechanism to isolate the thrust plate from the inner wall, and the oil filling and draining mechanism injects or discharges lubricating oil into or out of the maintenance mechanism.

2. The thrust disc maintenance device as described in claim 1, characterized in that, The maintenance mechanism includes a cylinder, a cover, and a locking device that detachably connects the cylinder and the cover. The shape and size of the cylinder match the shape and size of the thrust plate. The cover is used to cover the cylinder, and the locking device detachably connects the cylinder and the cover.

3. The thrust disc maintenance device as described in claim 2, characterized in that, The cover has an exhaust hole structure.

4. The thrust disc maintenance device as described in claim 2, characterized in that, The cylindrical body has a reinforcing rib structure on its peripheral wall.

5. The thrust disc maintenance device as described in claim 2, characterized in that, The maintenance mechanism further includes a pad located at the inner bottom of the cylinder, the pad having a circular hole; and / or, the pad having a flow guide groove.

6. The thrust disc maintenance device as described in claim 2, characterized in that, The protective buffer mechanism includes multiple damping buffers connected to the inner wall of the cylinder. The multiple damping buffers are evenly arranged along the circumference of the cylinder, and a protective pad is provided at one end of the damping buffer near the center of the cylinder.

7. The thrust disc maintenance device as described in any one of claims 1 to 6, characterized in that, The oil filling and draining mechanism includes an oil drain valve, an oil drain pump, an oil drain pipeline, an oil drain filter, an oil filling pump, an oil filling pipeline, an oil filling filter, and an oil holding container. The oil drain valve is located at the bottom of the maintenance mechanism and communicates with the interior of the maintenance mechanism. The oil drain valve, the oil drain pump, and the oil drain filter are connected in sequence through the oil drain pipeline. The oil drain filter is connected to the oil holding container through the oil drain pipeline. The oil filling pump and the oil filling filter are connected through the oil filling pipeline. The oil filling pump is connected to the oil holding container through the oil filling pipeline. The oil filling filter is connected to the interior of the maintenance mechanism through the oil filling pipeline.

8. The thrust disc maintenance device as described in any one of claims 1 to 6, characterized in that, The transport auxiliary mechanism includes a trolley and omnidirectional wheels and directional wheels located at the bottom of the trolley.

9. The thrust disc maintenance device as described in claim 8, characterized in that, The transport auxiliary mechanism includes feet located at the bottom of the trolley.

10. A nuclear power plant maintenance equipment, characterized in that, The device includes a main body of nuclear power plant maintenance equipment and a thrust disk maintenance device as described in any one of claims 1 to 9, wherein the thrust disk maintenance device is disposed on the main body of the nuclear power plant maintenance equipment.

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