An anti-corrosion maintenance device for seawater filter grids of a nuclear power plant cold source system

Abstract

The invention provides an anti-corrosion maintenance device for a seawater filtering grille of a cold source system of a nuclear power plant, which can be operated by a single person, can realize the cleaning of multiple grilles at multiple angles and multiple paths, can greatly save human resources, and improve work efficiency. The device comprises a base and a shell, a driving motor is installed on the shell, the driving motor drives a main shaft to rotate through a first bevel gear set, a driven shaft arranged parallel to the main shaft, a driving shaft and a driven shaft are respectively provided with pulleys, a belt is installed between the pulleys, a transmission mechanism mounting frame is respectively provided on the base corresponding to the driving shaft and the driven shaft, the driving shaft and the driven shaft are respectively installed on the upper end of the transmission mechanism mounting frame through bearing seats, a transmission mechanism is respectively provided on the transmission mechanism mounting frame, the driving shaft and the driven shaft respectively cooperate to drive the transmission mechanism through a second bevel gear set, a grille cleaning mechanism is connected at the end of the transmission mechanism and located at the lower end of the base, and a supporting roller is also provided at the lower end of the base corresponding to the grille.

Description

Technical Field

[0001] The invention relates to the technical field of maintenance equipment for a cold source system of a nuclear power plant, and in particular to an anti-corrosion maintenance device for a seawater filter grid of a cold source system of a nuclear power plant. Background Art

[0002] At present, the grilles used for seawater filtration in the cooling system of nuclear power plants are coated with anti-fouling coatings on their surfaces to prevent marine organisms from attaching. The coatings age, crack, and fall off during service and require regular maintenance. Currently, the more traditional method of multiple people operating at the same time is adopted, with each person holding a single angle grinder to operate. This not only wastes manpower, but is also inefficient and has high safety risks and high costs.

[0003] In view of the current demand for nuclear power plants, there is an urgent need to develop an anti-corrosion maintenance device for the seawater filter grid of the nuclear power plant cold source system to achieve automatic anti-corrosion maintenance of the grid, improve efficiency, and reduce operational risks and costs. Summary of the invention

[0004] In view of the above problems, the present invention provides an anti-corrosion maintenance device for seawater filter grilles of a nuclear power plant cold source system, which can be operated by a single person and can realize multi-grid cleaning at multiple angles and multiple paths, thereby greatly saving human resources, improving work efficiency, shortening maintenance time, and reducing direct economic losses caused by shutdown maintenance.

[0005] The technical solution is as follows: an anti-corrosion maintenance device for a seawater filter grille of a cold source system of a nuclear power plant, comprising a base and a shell mounted on the base, a driving motor mounted on the shell, the driving motor driving a driving shaft to rotate through a first bevel gear set, and also comprising a driven shaft arranged parallel to the driving shaft, the driving shaft and the driven shaft are respectively provided with pulleys, a belt is installed between the pulleys, a transmission mechanism mounting frame is respectively provided on the base corresponding to the driving shaft and the driven shaft, the driving shaft and the driven shaft are respectively mounted on the upper end of the transmission mechanism mounting frame through bearing seats, a transmission mechanism is respectively provided on the transmission mechanism mounting frame, the driving shaft and the driven shaft respectively drive the transmission mechanism through a second bevel gear set, a grille cleaning mechanism is connected to the end of the transmission mechanism and located at the lower end of the base, and a supporting roller is also provided at the lower end of the base corresponding to the grille.

[0006] Furthermore, the grille cleaning mechanisms are respectively arranged on two sides of the grille, and guide rollers are respectively arranged on the base on two sides of the grille.

[0007] Furthermore, the second bevel gear set includes a second driving bevel gear respectively installed on the driving shaft and the driven shaft, the transmission mechanism includes a torque limiter connected to the second bevel gear set, one end of the torque limiter is connected to the second driven bevel gear matching the second driving bevel gear, the other end of the torque limiter is connected to the cross-axis universal connector, the cross-axis universal connector is connected to the third bevel gear set after connecting the floating bearing, the third bevel gear set is arranged in the mounting seat, the third driving bevel gear of the third bevel gear set is connected to the cross-axis universal connector, the third driving bevel gear is meshed with the third driven bevel gear, and the third driven bevel gear is coaxially connected to the grille cleaning mechanism.

[0008] Furthermore, the grille cleaning mechanism includes any one or any combination of an electric scraper, an electric wire brush head, and a polishing head.

[0009] Furthermore, the electric scraper, wire brush head and polishing head are arranged in sequence.

[0010] Furthermore, the front and rear sides of the lower surface of the base respectively correspond to the grille and are provided with transverse slide rails arranged perpendicular to the grille, and sliders are respectively provided on the transverse slide rails and on both sides of the grille, and a connecting column is provided on the slider, and a long hole is provided on the lower connecting plate of the transmission mechanism corresponding to the connecting column, and the lower connecting plate of the transmission mechanism is arranged under the base through the connecting column and the long hole, and the lower end of the lower connecting plate of the transmission mechanism is provided with the mounting seat, and the lower end of the base is also provided with a transverse limit column parallel to the transverse slide rail, and an upper connecting plate is provided at the upper end of the lower connecting plate of the transmission mechanism, and a through hole is provided on the upper connecting plate, and the transverse limit column is arranged through the through hole on the upper connecting plate, and a limit plate is also provided at the end of the transverse limit column, and a spring is mounted on the transverse limit column between the limit plate and the upper connecting plate.

[0011] Furthermore, support rollers are provided at the lower end of the base, on the front side of the grille cleaning mechanism at the front end, and on the rear side of the grille cleaning mechanism at the rear end, respectively corresponding to the grilles, and one of the support rollers is connected to a driving device.

[0012] Furthermore, casters are respectively arranged at the four corners of the base through a screw lifting seat, and the screw lifting seat is also connected to an operating hand wheel.

[0013] Furthermore, an operating armrest is provided at the rear end of the base.

[0014] Furthermore, a dust suction device is provided on the base corresponding to each of the grille cleaning mechanisms, for sucking pollutants generated by the grille cleaning mechanisms to clean the grille.

[0015] The anti-corrosion maintenance device for the seawater filtering grid of the cold source system of a nuclear power plant of the present invention adopts the design concept of integrated control, uses only one motor drive device, distributes the driving force to each grid cleaning mechanism through the transmission structure, and realizes the consistency of the work of the device. The grid cleaning mechanism is arranged on the base corresponding to the multiple grids, and the multiple grids can be cleaned at the same time. The grid cleaning mechanism can use an electric scraper, a wire brush head, and a polishing head to clean the grid according to the pollution condition of the grid. The transmission mechanism connected to the grid cleaning mechanism is connected to the floating bearing through a cross-axis universal connector, and can be adjusted according to the degree of marine organism attachment and coating aging degree on the surface of the grid. , realize automatic adjustment of the grinding force, avoid greater wear on the grille matrix, can effectively remove dirt, and ensure the relative integrity of the grille matrix. The limit plate on the transverse limit column cooperates with the spring, so that the spring maintains a strong effect on the lower connecting plate of the transmission mechanism, so that the grille cleaning mechanism connected to the lower connecting plate of the transmission mechanism through the mounting seat can always be close to the grille for cleaning, ensuring the cleaning effect of the grille cleaning mechanism. The anti-corrosion maintenance device for the seawater filter grille of the cold source system of a nuclear power plant of the present invention can greatly save human resources, improve work efficiency, shorten maintenance and repair time, and reduce direct economic losses caused by shutdown maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of a corrosion protection maintenance device for a seawater filter grid of a nuclear power plant cold source system according to the present invention from a first perspective;

[0017] Figure 2 It is a schematic front view of an anti-corrosion maintenance device for a seawater filter grid of a nuclear power plant cold source system according to the present invention;

[0018] Figure 3 It is a bottom view schematic diagram of an anti-corrosion maintenance device for a seawater filter grid of a nuclear power plant cold source system according to the present invention;

[0019] Figure 4 It is a schematic diagram of a corrosion protection maintenance device for a seawater filter grid of a nuclear power plant cold source system according to the present invention from a second viewing angle;

[0020] Figure 5 It is a schematic diagram of an anti-corrosion maintenance device for a seawater filter grid of a nuclear power plant cold source system according to the present invention, viewed from a third perspective. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. It should be noted that the illustrations provided in this embodiment only illustrate the basic concept of the present invention in a schematic manner, and the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout type may also be more complicated.

[0022] See Figures 1 to 5 The present invention provides an anti-corrosion maintenance device for a seawater filter grille of a nuclear power plant cold source system, comprising a base 1 and a shell 2 mounted on the base 1, a driving motor 3 mounted on the shell, the driving motor 3 driving a driving shaft 5 to rotate through a first bevel gear set 4, and further comprising a driven shaft 6 arranged parallel to the driving shaft. In this embodiment, two driven shafts 6 are arranged on both sides of the driving shaft 5, respectively, and pulleys 7 are respectively arranged on the driving shaft 5 and the driven shaft 6, and a belt 8 is installed between the pulleys 7. The base 1 is provided with a transmission mechanism installed corresponding to the driving shaft and the driven shaft. The driving shaft 5 and the driven shaft 6 are respectively mounted on the upper end of the transmission mechanism mounting frame 9 through bearing seats. The transmission mechanism mounting frame 9 is provided with transmission mechanisms. The driving shaft 5 and the driven shaft 6 respectively drive the transmission mechanism through the second bevel gear set 10. A grille cleaning mechanism 11 is connected to the end of the transmission mechanism and located at the lower end of the base 1. Support rollers 12 are respectively provided corresponding to the grilles at the lower end of the base, at the front side of the grille cleaning mechanism at the front end, and at the rear side of the grille cleaning mechanism at the rear end, and the anti-corrosion maintenance device moves on the grille through the support rollers.

[0023] Specifically, the grille cleaning mechanism 11 is respectively arranged on both sides of the grille, so as to facilitate the cleaning of the two sides of the grille. Guide rollers 13 are respectively provided on the two sides of the grille on the base 1, and the grille passes between the two guide rollers 13. The guide rollers 13 are arranged to guide the anti-corrosion maintenance device during operation to ensure that the grille cleaning mechanism can clean the grille.

[0024] In this embodiment, the second bevel gear set includes a second active bevel gear respectively mounted on the active shaft 5 and the driven shaft 6, the transmission mechanism includes a torque limiter 15 connected to the second bevel gear set, one end of the torque limiter is connected to the second driven bevel gear matched with the second active bevel gear, the other end of the torque limiter 15 is connected to the cross shaft universal connector 16, the cross shaft universal connector 16 will pass through the base 1, and the base 1 is provided with through holes corresponding to the cross shaft universal connector 16, the cross shaft universal connector 16 is connected to the third bevel gear set after connecting the floating bearing 17, the floating bearing 17 is correspondingly provided with a bearing seat, the third bevel gear set is arranged in the mounting seat 14, the third active bevel gear of the third bevel gear set is connected to the cross shaft universal connector 16, ... The three active bevel gears are meshed with the third driven bevel gear, and the third driven bevel gear is coaxially connected to the grille cleaning mechanism 11. Through such a setting, the drive motor 3 can synchronously drive all the grille cleaning mechanisms 11 to work through the transmission mechanism. It adopts the design concept of integrated control and only uses one motor drive device. Through the transmission structure, the driving force is distributed to each grille cleaning mechanism to achieve the consistency of the equipment. Such a design can also make the weight of the equipment as light as possible. The longer the metal material is used, the lower its basic strength and hardness will be. On the one hand, it can avoid the deformation of the grille due to the weight of the equipment during construction. On the other hand, it can also be more convenient and quick for operators to carry the equipment.

[0025] In addition, by connecting the floating bearing 17 with the cross-axis universal connector 16, the grinding force can be automatically adjusted according to the degree of marine organism attachment and coating aging on the grille surface to avoid significant wear on the grille substrate. This can effectively remove dirt and ensure the relative integrity of the grille substrate.

[0026] The grille cleaning mechanism 11 includes any one or any combination of an electric scraper, an electric wire brush head, and a polishing head. Specifically in the present embodiment, corresponding to each grille, an electric scraper 111 and two polishing heads 112 are successively provided. The electric scraper includes a vibration device. During the vibration process, the blade head has a cutting effect, and the marine biological attachments are separated from the grille. The marine attachments can be removed before grinding, thereby reducing the working intensity of the polishing head, so that the grinding efficiency of the polishing head can be greatly improved. The two polishing heads 112 provided can grind and polish the grille, which can not only repair and remove the residue, but also grind and smooth it.

[0027] Specifically in this embodiment, the front and rear sides of the lower surface of the base 1 correspond to the grille, and are provided with a transverse slide rail 18 arranged perpendicular to the grille. Slide blocks 19 are provided on the transverse slide rail 18 and on both sides of the grille, respectively. The slide blocks 19 are provided with connecting columns 20. The lower connecting plate 21 of the transmission mechanism is provided with a long hole 22 corresponding to the connecting column. The lower connecting plate 21 of the transmission mechanism is arranged below the base 1 through the connecting column 20 and the long hole 22. The lower end of the connecting column can limit the lower connecting plate of the transmission mechanism. The lower end of the lower connecting plate 21 of the transmission mechanism is provided with a mounting seat 14. The lower end of the base 1 is also provided with a transverse limiting column 2 parallel to the transverse slide rail 18. 3. An upper connecting plate 24 is provided at the upper end of the lower connecting plate of the transmission mechanism, and a through hole is provided on the upper connecting plate 24. The transverse limiting column 23 is arranged through the through hole on the upper connecting plate 24. A limiting plate 25 is also provided at the end of the transverse limiting column 23. A spring 26 is sleeved on the transverse limiting column between the limiting plate 25 and the upper connecting plate 24. The limiting plate 25 on the transverse limiting column 23 cooperates with the spring 26, so that the spring 26 keeps acting forcefully on the lower connecting plate 21 of the transmission mechanism, so that the grille cleaning mechanism 11 connected to the lower connecting plate of the transmission mechanism through the mounting seat 14 can always be close to the grille for cleaning, ensuring the cleaning effect of the grille cleaning mechanism.

[0028] In addition, casters 28 are respectively arranged at the four corners of the base 1 through the screw lifting seat 27, and the screw lifting seat is also connected to an operating hand wheel 29. This design can facilitate the height adjustment, so that the anti-corrosion maintenance device can walk after being supported on the grille by the support roller 12, and it is also convenient to move the anti-corrosion maintenance device.

[0029] Furthermore, in this embodiment, an operating handle 30 is provided at the rear end of the base.

[0030] In one embodiment of the present invention, a dust suction device is provided on the base corresponding to each grille cleaning mechanism, which is used to absorb pollutants generated by the grille cleaning mechanism when cleaning the grille. The dust generated when the grille cleaning mechanism is polished not only causes huge pollution to the surrounding environment, but also poses a huge threat to the life, health and safety of the operator. Therefore, in the entire design process, a dust suction device is added to absorb the pollutants generated. The dust suction device and the grille cleaning mechanism operate synchronously, which can avoid polluting the environment and ensure that the health of the operator is not harmed.

[0031] In another embodiment of the present invention, the grille cleaning mechanism includes an electric scraper, a wire brush head, and a polishing head which are arranged in sequence corresponding to the grille. In order to ensure that it can be cleaned in one go without the need for repeated reciprocating cleaning, in this embodiment, the first step is to add an electric scraper to remove the marine attachments before grinding, thereby reducing the working intensity of the subsequent grinding device and greatly improving the grinding efficiency. The second step is to use a wire brush head to remove the aged coating to achieve the cleaning effect; the third step is to use a polishing head to polish the grille that has been ground by the wire brush head, which can not only repair and remove the residue, but also polish and smoothen it. Of course, in other embodiments of the present invention, the grille cleaning mechanism can have more settings, and more than three or more steps can be set. The number of electric scrapers, wire brush heads, and polishing heads can also be set according to the attachment of marine attachments to the grille, and these are all adjustable.

[0032] In one embodiment of the present invention, the supporting roller may also be connected to a driving device, and the anti-corrosion maintenance device may be driven to move by the driving device, so that the wheel may have the ability to move automatically, thereby reducing the difficulty of human operation.

[0033] In the past, the cleaning of the seawater filter grilles of the nuclear power plant cold source system was carried out by the more traditional method of multiple people operating at the same time, each holding a single angle grinder to perform the operation, which not only wastes manpower but also has low efficiency. However, the anti-corrosion maintenance device for the seawater filter grilles of the nuclear power plant cold source system of the present invention can be used to grind and clean the rust, aging coating, marine organisms and other dirt on the grille surface, and mechanized operation and grinding and cleaning can be achieved to the greatest extent possible, reducing human resources, maximizing efficiency, shortening maintenance time, and reducing direct economic losses caused by shutdown maintenance.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An anti-corrosion maintenance device for a seawater filter grid of a nuclear power plant cold source system, comprising a base and a shell mounted on the base, characterized in that: The housing is provided with a driving motor, the driving motor drives the driving shaft to rotate through the first bevel gear set, and also includes a driven shaft arranged in parallel with the driving shaft, the driving shaft and the driven shaft are respectively provided with pulleys, a belt is installed between the pulleys, a transmission mechanism mounting frame is respectively provided on the base corresponding to the driving shaft and the driven shaft, the driving shaft and the driven shaft are respectively installed on the upper end of the transmission mechanism mounting frame through bearing seats, a transmission mechanism is respectively provided on the transmission mechanism mounting frame, the driving shaft and the driven shaft respectively cooperate to drive the transmission mechanism through the second bevel gear set, a grille cleaning mechanism is connected to the end of the transmission mechanism and located at the lower end of the base, and a supporting roller is also provided at the lower end of the base corresponding to the grille; The grille cleaning mechanisms are respectively arranged on both sides of the grille, and guide rollers are respectively arranged on both sides of the base corresponding to the grille; The second bevel gear set includes a second driving bevel gear respectively mounted on the driving shaft and the driven shaft, the transmission mechanism includes a torque limiter connected to the second bevel gear set, one end of the torque limiter is connected to a second driven bevel gear matched with the second driving bevel gear, the other end of the torque limiter is connected to a cross shaft universal connector, the cross shaft universal connector is connected to a third bevel gear set after being connected to a floating bearing, the third bevel gear set is arranged in a mounting seat, the third driving bevel gear of the third bevel gear set is connected to the cross shaft universal connector, the third driving bevel gear is meshed with the third driven bevel gear, and the third driven bevel gear is coaxially connected to the grille cleaning mechanism; The grille cleaning mechanism comprises an electric scraper, an electric wire brush head, and a polishing head, wherein the electric scraper, the wire brush head, and the polishing head are arranged in sequence; The front and rear sides of the lower surface of the base correspond to the grille respectively, and are provided with transverse slide rails arranged perpendicular to the grille, and sliders are respectively provided on the transverse slide rails and on both sides of the grille, and connecting columns are provided on the sliders, and elongated holes are provided on the lower connecting plate of the transmission mechanism corresponding to the connecting columns, and the lower connecting plate of the transmission mechanism is arranged under the base through the connecting columns and the elongated holes, and the lower end of the lower connecting plate of the transmission mechanism is provided with the mounting seat, and the lower end of the base is also provided with a transverse limiting column parallel to the transverse slide rail, and an upper connecting plate is provided on the upper end of the lower connecting plate of the transmission mechanism, and a through hole is provided on the upper connecting plate, and the transverse limiting column is arranged through the through hole on the upper connecting plate, and a limiting plate is also provided on the end of the transverse limiting column, and a spring is mounted on the transverse limiting column between the limiting plate and the upper connecting plate.

2. The anti-corrosion maintenance device for seawater filter grids of a nuclear power plant cold source system according to claim 1, characterized in that: Support rollers are provided at the lower end of the base, at the front side of the grille cleaning mechanism at the front end, and at the rear side of the grille cleaning mechanism at the rear end, respectively corresponding to the grilles, and one of the support rollers is connected to a driving device.

3. The anti-corrosion maintenance device for seawater filter grids of a nuclear power plant cold source system according to claim 1, characterized in that: Casters are respectively arranged at the four corners of the base through a screw lifting seat, and the screw lifting seat is also connected with an operating hand wheel.

4. The anti-corrosion maintenance device for seawater filter grids of a nuclear power plant cold source system according to claim 1, characterized in that: An operating handrail is arranged at the rear end of the base.

5. The anti-corrosion maintenance device for seawater filter grids of a nuclear power plant cold source system according to claim 1, characterized in that: A dust suction device is also provided on the base corresponding to each of the grille cleaning mechanisms, which is used to absorb pollutants generated by the grille cleaning mechanism to clean the grille.

Images