Cleaning machine for king bolt of reactor pressure vessel
The reactor pressure vessel bolt cleaning machine addresses inefficiencies in existing cleaning methods by using a semi-wet multi-brush system to enhance cleaning efficiency and reduce waste, achieving thorough bolt cleaning with reduced manual intervention and operational costs.
Patent Information
- Application Number
- CN202421545273.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-07-02
AI Technical Summary
The prior art is inefficient in the cleaning process of the main bolts of the reactor pressure vessel of nuclear power plant, and it is impossible to effectively clean the wet threaded surface, and the generation of radioactive waste liquid increases the cost of treatment, and the demand for manual cleaning increases.
The semi-wet multi-brush sleeve washing technology is adopted to achieve the flip and axial movement of the main bolt through the flip mechanism and the moving components. Combined with multiple cleaning brushes and vacuuming devices, the cleaning, air drying and vacuuming are integrated to avoid the generation of radioactive waste liquid.
It improves cleaning efficiency, reduces labor and time costs, reduces radioactive waste treatment costs, reduces personnel contamination risks, and meets customers' cleaning requirements.
Smart Images
Figure CN223097418U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bolt cleaning, in particular to a main bolt cleaning machine for a reactor pressure vessel. Background Art
[0002] During the major overhaul of nuclear power plants, the main bolts of the reactor pressure vessel removed are cleaned. At present, the cleaning methods for the main bolts in nuclear power plants are mainly divided into two types: dry cleaning and wet cleaning. Dry cleaning mainly uses the cleaning machine produced by Wentaite in Germany. The main working principle is that the soft wire brush rotates and reciprocates up and down under the guidance of the guide wheel to complete the cleaning of each thread surface one by one. At the same time, a vacuum cleaner is required to suck and filter the aerosol generated during the cleaning process. This cleaning method not only has low efficiency, but also is only applicable when the anti-seize agent on the thread surface is in a dry state. Since a large amount of loosening agent is injected when most domestic units disassemble the main bolts, after the main bolts are removed, the anti-seize agent on their thread surfaces is in a wet state, resulting in inapplicability or unclean cleaning of dry cleaning.
[0003] Domestic nuclear power plants mainly adopt the wet cleaning method. Its characteristic is that the brushing device uses a nylon brush to brush circumferentially along the thread surface, and cooperates with the flushing action of the cleaning liquid to remove dirt. However, due to the tight construction period of the power plant overhaul, the time window for cleaning the main bolts is limited. The cleaning time for the main bolts is basically controlled within about 10 minutes for each bolt. However, the brushing force of the long nylon brush is limited, and there is often a problem that the anti-seize agent adhered to the bottom of the thread groove cannot be cleaned thoroughly, and manual secondary auxiliary cleaning is required; at the same time, wet cleaning will also generate a large amount of radioactive waste liquid, increasing the waste treatment cost of the power plant; due to the above adverse factors, some units completely abandon automatic cleaning and directly adopt the manual cleaning method. Content of the Utility Model
[0004] The purpose of the utility model is to provide a main bolt cleaning machine for a reactor pressure vessel aiming at the above deficiencies in the cleaning of the main bolts of the reactor pressure vessel in nuclear power plants at present, which improves the overall working efficiency of cleaning the main bolts, saves labor and time costs, and no waste liquid and aerosol are generated during the cleaning process.
[0005] The utility model is realized by the following technical solutions:
[0006] The utility model provides a main bolt cleaning machine for a reactor pressure vessel, which comprises a base, a cleaning component, a moving component and a turning mechanism; the turning mechanism is arranged on the base and is used for installing and fixing the main bolt and realizing the turning and switching between the vertical state and the horizontal state of the main bolt; the cleaning component comprises a first brush barrel and a second brush barrel, the first brush barrel and the second brush barrel are rotatably arranged on the moving component and are respectively located on both sides of the turning mechanism; the moving component is slidably arranged on the base and is used for driving the first brush barrel and the second brush barrel to axially move along the axis of the main bolt when the main bolt is in the horizontal state so as to respectively sleeved on the threaded sections at both ends of the main bolt; a plurality of first cleaning brushes are arranged on the first brush barrel, and a plurality of second cleaning brushes are arranged on the second brush barrel, and the plurality of first cleaning brushes and the plurality of second cleaning brushes are uniformly distributed along the circumferential direction of the main bolt.
[0007] As a preferred scheme of the utility model, the moving component comprises a first moving frame and a second moving frame, the first moving frame and the second moving frame are respectively located on both sides of the turning mechanism and are slidably connected with the base, the first brush barrel is rotatably connected with the first moving frame, and the second brush barrel is rotatably connected with the second moving frame.
[0008] As a preferred scheme of the utility model, sliders are arranged on the first moving frame and the second moving frame, slide rails are arranged on the base, and the sliders are fitted and installed on the slide rails; the first moving frame is connected with the base through a first lead screw and a first nut, and the second moving frame is connected with the base through a second lead screw and a second nut.
[0009] As a preferred scheme of the utility model, both ends of the first brush barrel are connected with the first moving frame through bearing seats, and both ends of the second brush barrel are connected with the second moving frame through bearing seats; rotary driving motors are arranged on both the first moving frame and the second moving frame, and the two rotary driving motors are used for driving the first brush barrel and the second brush barrel to rotate.
[0010] As a preferred scheme of the utility model, air inlet holes and air extraction pipes are correspondingly arranged on the bearing seats at both ends of the first brush barrel, and air inlet holes and air extraction pipes are correspondingly arranged on the bearing seats at both ends of the second brush barrel; the air extraction pipes are used for being connected with a vacuum cleaner to suck away the dirt particles brushed off; the air inlet holes are used for introducing air into the interiors of the first brush barrel and the second brush barrel.
[0011] As a preferred solution of the utility model, the flipping mechanism includes a flipping bracket and a flipping arm, the flipping bracket is fixedly arranged on the base, the flipping arm is rotatably arranged on the flipping bracket, and the rotation axis is perpendicular to the axis of the main bolt, and two hoops are arranged on the flipping arm at intervals along the axial direction of the main bolt, and positioning pipe segments are arranged on the outer sides of the two hoops.
[0012] As a preferred solution of the utility model, the clamp includes a fixed part and a rotating part, and the fixed part and the rotating part are relatively provided with semicircular grooves adapted to the clamping part of the main bolt, the fixed part is arranged at the end of the flip arm, one end of the rotating part is hinged to the fixed part, and the other end is movably connected to the fixed part by a bolt; the positioning pipe segment is divided into two parts with the axis of the main bolt as the center, one part is connected to the fixed part, and the other part is connected to the rotating part.
[0013] As a preferred solution of the utility model, a flip drive motor is provided on the flip bracket, and the flip drive motor is used to drive the flip arm to rotate around the flip bracket.
[0014] As a preferred solution of the utility model, a plurality of mounting openings are evenly opened on the first brush barrel and the second brush barrel along the circumferential direction, and the plurality of first cleaning brushes and the plurality of second cleaning brushes are respectively detachably arranged in the mounting openings.
[0015] As a preferred embodiment of the present invention, the first cleaning brush and the second cleaning brush both include a main body adapted to the mounting port, the length of the main body corresponds to the length of the threaded sections covering both ends of the main bolt, and bristles are provided on the inner side of the main body.
[0016] Compared with the prior art, the utility model has the following advantages and beneficial effects:
[0017] The utility model adopts the semi-wet multi-brush washing working principle, which not only improves the cleaning efficiency, but also improves the cleanliness of the thread surface after cleaning, and integrates cleaning, air drying and dust collection together, thereby improving the overall work efficiency of main bolt cleaning and saving labor and time costs; no waste liquid is generated during the cleaning process, reducing the cost of nuclear power waste liquid treatment, and no aerosol is generated, reducing the risk of surface and internal contamination of personnel, fully meeting customer requirements. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] To more clearly illustrate the technical solutions of the exemplary embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings. In the drawings:
[0019] Figure 1 is the front view of the main bolt cleaning machine for the reactor pressure vessel in the present utility model;
[0020] Figure 2 is Figure 1 the schematic diagram of the first brush barrel in;
[0021] Figure 3 is Figure 2 the A-A sectional view in (hiding the first cleaning brush);
[0022] Figure 4 is the schematic diagram of the first cleaning brush and the second cleaning brush in the present utility model;
[0023] Figure 5 is the side view of the bearing seat with an air extraction pipe in the present utility model;
[0024] Figure 6 is the schematic diagram of the moving component in the present utility model;
[0025] Figure 7 is the front view of the flipping mechanism in the present utility model;
[0026] Figure 8 is the top view of the flipping mechanism in the present utility model;
[0027] Figure 9 is the side view of the flipping mechanism in the present utility model;
[0028] Figure 10 is the schematic diagram of the main bolt of the reactor pressure vessel.
[0029] Marks in the drawings and the corresponding component names:
[0030] 1 - Base, 11 - Slide rail, 2 - Cleaning component, 21 - First brush barrel, 22 - Second brush barrel, 23 - First cleaning brush, 24 - Second cleaning brush, 25 - Main body part, 26 - Bristles, 27 - Installation opening, 3 - Moving component, 31 - First moving frame, 32 - Second moving frame, 33 - Slide block, 34 - First lead screw, 35 - Second lead screw, 4 - Bearing seat, 41 - Air inlet hole, 42 - Exhaust pipe, 5 - Rotary drive motor, 6 - Flipping mechanism, 61 - Flipping bracket, 62 - Flipping arm, 63 - Hoop, 631 - Fixed part, 632 - Rotating part, 633 - Movable bolt, 64 - Positioning pipe segment, 65 - Flipping drive motor, 7 - Main bolt. Detailed implementation mode
[0031] To make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with embodiments and drawings. The illustrative embodiments and descriptions of the present utility model are only used to explain the present utility model and are not intended to limit the present utility model.
[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the description of the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.
[0033] In the description of the embodiments of this application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features.
[0034] Referring to "embodiments" herein means that the specific features, structures or characteristics described in connection with the embodiments may be included in at least one embodiment of this application. The phrase appears in various positions in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.
[0035] In the description of the embodiments of this application, the term "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: there is A, there is both A and B, and there is B. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.
[0036] In the embodiments of the present application, the same reference numerals denote the same components, and for the sake of brevity, in different embodiments, the detailed description of the same components is omitted. It should be understood that the thicknesses, lengths, widths, etc. of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width, etc. of the integrated device, are only exemplary descriptions and should not constitute any limitation to the present application.
[0037] In the description of the embodiments of the present application, the term "plurality" means two or more (including two). Similarly, "multiple groups" means two or more groups (including two groups), and "multiple pieces" means two or more pieces (including two pieces), unless otherwise specifically and clearly defined.
[0038] In the description of the embodiments of the present application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application 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 should not be construed as a limitation to the embodiments of the present application.
[0039] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.
[0040] Please refer to Figures 1 to 10, a main bolt cleaning machine provided in an embodiment of the present application includes a base 1, a cleaning component 2, a moving component 3, and a flipping mechanism 6; the flipping mechanism 6 is disposed on the base 1, and the flipping mechanism 6 is used to install and fix the main bolt 7 and realize the flipping and switching of the main bolt 7 between a vertical state and a horizontal state; the cleaning component 2 includes a first brush barrel 21 and a second brush barrel 22, the first brush barrel 21 and the second brush barrel 22 are rotatably disposed on the moving component 3 and are respectively located on both sides of the flipping mechanism 6; the moving component 3 is slidably disposed on the base 1, and the moving component 3 is used to drive the first brush barrel 21 and the second brush barrel 22 to move axially along the main bolt 7 when the main bolt 7 is in a horizontal state, so as to respectively sleeve on the threaded sections at both ends of the main bolt 7; a plurality of first cleaning brushes 23 are disposed on the first brush barrel 21, a plurality of second cleaning brushes 24 are disposed on the second brush barrel 22, and the plurality of first cleaning brushes 23 and the plurality of second cleaning brushes 24 are uniformly distributed along the circumferential direction of the main bolt 7.
[0041] During use, first rotate the flipping mechanism 6 to the vertical state, hoist the main bolt 7 and install and fix it on the flipping mechanism 6 vertically, and then rotate the flipping mechanism 6 to the horizontal state so that the main bolt 7 is in a horizontal state during cleaning. Then drive the first brush barrel 21 and the second brush barrel 22 to move relatively axially along the main bolt 7 through the moving component 3, and stop moving after the first brush barrel 21 and the second brush barrel 22 respectively sleeve on the threaded sections at both ends of the main bolt 7. Then rotate the first brush barrel 21 and the second brush barrel 22 around the axis of the main bolt 7, so as to drive the first cleaning brushes 23 and the second cleaning brushes 24 to brush the threaded sections at both ends of the main bolt 7.
[0042] This solution adopts semi-wet cleaning, without radioactive aerosols, no need to install high-efficiency filters, will not pollute the operators and the environment, and will not generate new radioactive waste; a large amount of radioactive cleaning waste liquid will not be generated during cleaning, saving the cost of secondary waste liquid treatment; adopting the multi-brush sleeve washing technology, greatly improving the cleaning efficiency, and can realize the mutual combination of rough cleaning, fine cleaning and polishing functions, so that all cleaning steps can be completed with one start, and at the same time, the cleaning intensity of the cleaning brushes or the combination scheme of the cleaning brushes can be adjusted according to the cleaning conditions to ensure that the cleanliness of the surface of the main bolt to be cleaned meets the technical requirements.
[0043] It should be noted that this semi-wet cleaning technology is different from the existing dry cleaning and wet cleaning. Instead, it is in between the two. The so-called semi-wet means that before the main bolt is disassembled, an appropriate amount of loosening agent is injected onto the thread surface, causing the anti-seize agent on its surface that is dry and caked to be in a wet state. The semi-wet cleaning technology is to clean the main bolt while keeping the anti-seize agent on its surface in a wet state, without the need to rinse it with a large amount of cleaning liquid (i.e., wet cleaning), nor to wait for it to air dry before cleaning (i.e., dry cleaning). The dirt brushed off the main bolt in this state is in the form of wet granules and will not float into the air.
[0044] According to some embodiments of the present application, the moving assembly 3 includes a first moving frame 31 and a second moving frame 32. The first moving frame 31 and the second moving frame 32 are respectively located on both sides of the flipping mechanism 6 and are slidably connected to the base 1. The first brush barrel 21 is rotatably connected to the first moving frame 31, and the second brush barrel 22 is rotatably connected to the second moving frame 32.
[0045] In this embodiment, the first moving frame 31 and the second moving frame 32 are respectively located on both sides of the flipping axis of the main bolt 7. That is, when the main bolt 7 is flipped to the horizontal state, the first moving frame 31 and the second moving frame 32 are respectively located at both ends in the axial direction of the main bolt 7. The lower parts of the first moving frame 31 and the second moving frame 32 are respectively slidably connected to the base 1, and the sliding direction is along the axial direction of the main bolt 7 when it is in the horizontal state, so that the first moving frame 31 and the second moving frame 32 can move towards or away from the main bolt 7. The first brush barrel 21 and the second brush barrel 22 are rotatably arranged on the upper parts of the first moving frame 31 and the second moving frame 32. After the first moving frame 31 and the second moving frame 32 move axially in place, the first brush barrel 21 and the second brush barrel 22 can rotate around the main bolt 7, so that the cleaning brush can brush the threaded section of the main bolt 7.
[0046] According to some embodiments of the present application, sliders 33 are provided at the lower parts of the first moving frame 31 and the second moving frame 32, and slide rails 11 are provided on the base 1. The sliders 33 are fitted and installed on the slide rails 11; the first moving frame 31 is connected to the base 1 through a first lead screw 34 and a first nut, and the second moving frame 32 is connected to the base 1 through a second lead screw 35 and a second nut. Specifically, the first nut and the second nut are provided on the first moving frame 31 and the second moving frame 32, and the first lead screw 34 and the second lead screw 35 are connected to the base 1. By rotating the first lead screw 34 and the second lead screw 35, the first moving frame 31 and the second moving frame 32 can be driven to move axially along the main bolt 7.
[0047] According to some embodiments of the present application, both ends of the first brush barrel 21 are connected to the first moving frame 31 through bearing seats 4, and both ends of the second brush barrel 22 are connected to the second moving frame 32 through bearing seats 4; rotary drive motors 5 are provided on both the first moving frame 31 and the second moving frame 32, and the two rotary drive motors 5 are used to drive the first brush barrel 21 and the second brush barrel 22 to rotate. The rotary drive motor 5 provides power for the rotation of the brush barrel, and stepless speed regulation from 0 to 350 revolutions per minute can be achieved as needed to meet the functional requirements of different stages such as rough washing, fine washing, and polishing.
[0048] According to some embodiments of the present application, air inlet holes 41 and air extraction pipes 42 are correspondingly provided on the bearing seats 4 at both ends of the first brush barrel 21, and air inlet holes 41 and air extraction pipes 42 are correspondingly provided on the bearing seats 4 at both ends of the second brush barrel 22; the air extraction pipes 42 are used to connect to a vacuum cleaner to suck away the dirt particles brushed off; the air inlet holes 41 are used to introduce air into the interiors of the first brush barrel 21 and the second brush barrel 22 during air extraction. Specifically, the air inlet holes 41 are provided on the bearing seats 4 close to the rotary drive motor 5 and are respectively communicated with the interiors of the first brush barrel 21 and the second brush barrel 22. The air extraction pipes 42 are provided on the bearing seats 4 far from the rotary drive motor 5 and are respectively communicated with the interiors of the first brush barrel 21 and the second brush barrel 22. This solution adopts an integrated technology of cleaning, dust suction, and air drying, thereby improving the overall working efficiency of the main bolt cleaning, saving labor and time costs, and reducing the pollution risk at the same time.
[0049] According to some embodiments of the present application, the flipping mechanism 6 includes a flipping bracket 61 and a flipping arm 62. The flipping bracket 61 is fixedly provided on the base 1, the flipping arm 62 is rotatably provided on the flipping bracket 61, and the rotation axis is perpendicular to the axis of the main bolt 7. Two hoops 63 are arranged at intervals along the axial direction of the main bolt 7 on the flipping arm 62, and positioning pipe pieces 64 are arranged on the outer sides of the two hoops 63.
[0050] In this solution, the rotation center of the flipping arm 62 is perpendicular to the axis of the main bolt 7, so that the main bolt 7 can be flipped from the vertical state to the horizontal state. Among them, the flipping arm 62 is convenient for hoisting the main bolt 7 in the vertical state. When the flipping mechanism 6 flips the main bolt 7 to the horizontal state and fixes it, the main bolt 7 and the first brush barrel 21 and the second brush barrel 22 provided at both ends of the main bolt 7 are kept concentric, so as to smoothly sleeve the threaded sections at both ends of the main bolt 7. Two hoops 63 are provided on the flipping arm 62, and positioning pipe pieces 64 are designed, so as to facilitate axial positioning and clamping when hoisting the main bolt 7. By providing the flipping mechanism 6, the integrated operation of clamping, flipping, fixing, and cleaning the main bolt 7 can be realized, and the operation process is safer, simpler, and more efficient.
[0051] According to some embodiments of the present application, the hoop 63 includes a fixing portion 631 and a rotating portion 632. Semi-circular grooves adapted to the clamping portion of the main bolt 7 are oppositely arranged on the fixing portion 631 and the rotating portion 632. The fixing portion 631 is arranged at the end of the flipping arm 62. One end of the rotating portion 632 is hinged to the fixing portion 631, and the other end is connected to the fixing portion 631 through a movable bolt 633. The positioning segment 64 is divided into two parts centered on the axis of the main bolt 7, one part is connected to the fixing portion 631, and the other part is connected to the rotating portion 632. The axial direction of the main bolt 7 is positioned through the positioning segment 64, and then the rotating portion 632 of the hoop 63 is connected to the fixing portion 631, so that the main bolt 7 is positioned and clamped on the flipping arm 62.
[0052] When the main bolt 7 is hoisted, the flipping arm 62 is in a vertical state, and the upper end of the main bolt 7 is connected to the hook. Then, the movable bolt 633 of the rotating portion 632 on the hoop 63 is loosened, so that the rotating portion 632 rotates around the hinge point, separating the rotating portion 632 from the fixing portion 631 (i.e., opening the hoop 63), which facilitates the hoisting of the main bolt 7. When the main bolt 7 is hoisted into the hoop 63, when the R50 fillet on the main bolt 7 drops to the end face of the positioning segment 64 of the hoop 63, first lock the upper hoop 63, then lock the lower hoop 63, disconnect the connection between the upper end of the main bolt 7 and the hook, and then flip the flipping arm 62 to a horizontal state. By rotating the first lead screw 34 and the second lead screw 35, the first moving frame 31 and the second moving frame 32 are driven to move along the axial direction of the main bolt 7, so that the first brush barrel 21 and the second brush barrel 22 are sleeved on the threaded segments at both ends of the main bolt 7. When the bearing seat 4 contacts the end face of the flipping arm 62, stop rotating the first lead screw 34 and the second lead screw 35.
[0053] According to some embodiments of the present application, a flipping drive motor 65 is arranged on the flipping bracket 61, and the flipping drive motor 65 is used to drive the flipping arm 62 to rotate around the flipping bracket 61. By driving the flipping arm 62 to rotate around the flipping bracket 61 through the flipping drive motor 65, the flipping process of the main bolt 7 is made safer, simpler, more efficient and labor-saving.
[0054] According to some embodiments of the present application, a plurality of mounting openings 27 are evenly formed in the circumferential direction on the first brush barrel 21 and the second brush barrel 22. The plurality of first cleaning brushes 23 and the plurality of second cleaning brushes 24 are respectively detachably mounted in the mounting openings 27 through bolts. This solution can make the replacement of the first cleaning brush 23 and the second cleaning brush 24 convenient, and the cleaning cost is lower.
[0055] According to some embodiments of the present application, both the first cleaning brush 23 and the second cleaning brush 24 include a main body portion 25 adapted to the mounting opening 27. The length of the main body portion 25 correspondingly covers the lengths of the threaded segments at both ends of the main bolt 7. A brush hair 26 is provided on the inner side of the main body portion 25. This solution adopts a multi-brush sleeve cleaning technology with full coverage of the threaded length, and the cleaning efficiency can be increased by 4 to 6 times compared with the existing cleaning machine.
[0056] In this technical solution, the cleaning brush is closer to the threaded surface. The brush hair 26 can be made of various materials and in various specifications, such as stainless steel wire, copper wire, abrasive-containing nylon wire, etc. The brush hair can be composed of brush hairs of different thicknesses such as 0.1, 0.15, 0.2, 0.25, 0.30, etc. The combination of cleaning brushes of different materials and specifications can significantly improve the cleaning strength while protecting the threaded surface, thereby further improving the cleaning efficiency and cleanliness.
[0057] The first cleaning brush 23 and the second cleaning brush 24 can be customized with nylon brush hairs containing wear-resistant materials that can polish the threaded surface, as well as copper wire brush hairs of various specifications with different brush wire diameters. The lengths of the first cleaning brush 23 and the second cleaning brush 24 cover the threaded segment lengths at both ends of the entire main bolt 7 to be cleaned, and the width can be designed to be 30 - 40 mm. During the first cleaning, the mutual combination and cleaning strength of various types of cleaning brushes can be adjusted according to the actual situation of the threaded surface.
[0058] According to some embodiments of the present application, a control device may further be included. First, there is a one-key emergency stop device to prevent accidents during the cleaning process. Second, there is automatic control, that is, it automatically completes the horizontal flipping of the main bolt 7, the movement and installation of the cleaning component 2, rough cleaning, fine cleaning, polishing, evacuation, and the vertical flipping of the main bolt 7 and other working steps, and manual control of each single function can be implemented to meet the requirements in different situations. It should be noted that in the figure of this embodiment, only the hand-cranked lead screw drive scheme of the first moving frame 31 and the second moving frame 32 is shown.
[0059] The specific embodiments described above further elaborate on the purpose, technical solution, and beneficial effects of the present utility model. It should be understood that the above is only the specific embodiment of the present utility model and is not used to limit the protection scope of the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A main bolt cleaning machine for a reactor pressure vessel, characterized in that, It includes a base, a cleaning component, a moving component and a flipping mechanism; the flipping mechanism is arranged on the base and is used for installing and fixing the main bolt and realizing the flipping and switching of the main bolt between the vertical state and the horizontal state; the cleaning component includes a first brush barrel and a second brush barrel, the first brush barrel and the second brush barrel are rotatably arranged on the moving component and are respectively located on both sides of the flipping mechanism; the moving component is slidably arranged on the base and is used for driving the first brush barrel and the second brush barrel to move axially along the main bolt when the main bolt is in the horizontal state so as to be sleeved on the threaded sections at both ends of the main bolt respectively; a plurality of first cleaning brushes are arranged on the first brush barrel, and a plurality of second cleaning brushes are arranged on the second brush barrel, and the plurality of first cleaning brushes and the plurality of second cleaning brushes are uniformly distributed along the circumferential direction of the main bolt.
2. The main bolt cleaning machine for a reactor pressure vessel according to claim 1, characterized in that, The moving component includes a first moving frame and a second moving frame, the first moving frame and the second moving frame are respectively located on both sides of the flipping mechanism and are slidably connected with the base, the first brush barrel is rotatably connected with the first moving frame, and the second brush barrel is rotatably connected with the second moving frame.
3. The main bolt cleaning machine for a reactor pressure vessel according to claim 2, characterized in that, Sliders are arranged on the first moving frame and the second moving frame, and slide rails are arranged on the base, and the sliders are fitted and installed on the slide rails; the first moving frame is connected with the base through a first lead screw and a first nut, and the second moving frame is connected with the base through a second lead screw and a second nut.
4. The main bolt cleaning machine for a reactor pressure vessel according to claim 3, characterized in that, Both ends of the first brush barrel are connected with the first moving frame through bearing seats, and both ends of the second brush barrel are connected with the second moving frame through bearing seats; rotary drive motors are arranged on both the first moving frame and the second moving frame, and the two rotary drive motors are used for driving the first brush barrel and the second brush barrel to rotate.
5. The main bolt cleaning machine for a reactor pressure vessel according to claim 4, characterized in that, Air inlet holes and air extraction pipes are correspondingly arranged on the bearing seats at both ends of the first brush barrel, and air inlet holes and air extraction pipes are correspondingly arranged on the bearing seats at both ends of the second brush barrel; the air extraction pipes are used for connecting with a vacuum cleaner to suck away the dirt particles brushed off; the air inlet holes are used for introducing air into the interiors of the first brush barrel and the second brush barrel.
6. The main bolt cleaning machine for a reactor pressure vessel according to any one of claims 1-5, characterized in that The flipping mechanism includes a flipping support and a flipping arm, the flipping support is fixedly arranged on the base, the flipping arm is rotatably arranged on the flipping support, and the rotation axis is perpendicular to the axis of the main bolt. Two hoop fasteners are arranged on the flipping arm at intervals along the axial direction of the main bolt, and positioning pipe pieces are arranged on the outer sides of the two hoop fasteners.
7. The main bolt cleaning machine for a reactor pressure vessel according to claim 6, characterized in that, The hoop fastener includes a fixed part and a rotating part, and semi-circular grooves adapted to the parts for clamping the main bolt are oppositely arranged on the fixed part and the rotating part. The fixed part is arranged at the end of the flipping arm, one end of the rotating part is hinged to the fixed part, and the other end is movably connected to the fixed part through a bolt; the positioning pipe piece is divided into two parts centered on the axis of the main bolt, one part of which is connected to the fixed part and the other part of which is connected to the rotating part.
8. The main bolt cleaning machine for a reactor pressure vessel according to claim 7, characterized in that, A flipping drive motor is arranged on the flipping support, and the flipping drive motor is used for driving the flipping arm to rotate around the flipping support.
9. The main bolt cleaning machine for a reactor pressure vessel according to any one of claims 1-5, characterized in that A plurality of mounting openings are evenly formed in the circumferential direction along the upper edges of the first brush barrel and the second brush barrel, and the plurality of first cleaning brushes and the plurality of second cleaning brushes are respectively detachably arranged in the mounting openings.
10. The main bolt cleaning machine for a reactor pressure vessel according to claim 9, characterized in that, Both the first cleaning brush and the second cleaning brush include a main body portion adapted to the mounting opening, the length of the main body portion correspondingly covering the lengths of the threaded segments at both ends of the main bolt, and bristles are arranged on the inner side of the main body portion.