Decontamination cleaning device for sealing surface of pressure vessel

Abstract

The utility model discloses a pressure vessel sealing surface decontamination cleaning device which comprises a fixing frame, a movable groove is formed in the middle of the fixing frame, a cleaning assembly is movably connected in the movable groove, the two ends of the fixing frame are rotationally connected with swing plates, abutting idler wheels are fixedly installed on the front sides and the rear sides of the bottoms of the swing plates, and the abutting idler wheels are movably connected with the movable groove. The bottom of the swing plate is rotationally connected with plane rollers located on the two sides of the abutting rolling wheel, a gear ring is fixedly installed at the end, close to the cleaning assembly, of the swing plate, racks located above the fixing frame are fixedly installed on the two sides of the cleaning assembly, and the gear ring is meshed with the racks. By arranging the swing plate, the swing plate rotating along with the radian of the sealing surface drives the gear ring to rotate and drives the rack to move, so that the cleaning assembly moves in the movable groove along the guide sliding rod, the cleaning assembly is always kept right above the sealing surface, and efficient cleaning of the sealing surface is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic cleaning, in particular to a decontamination and cleaning device for the sealing surface of a pressure vessel. Background Art

[0002] Generally speaking, the reactor pressure vessel is an irreplaceable Class I equipment in a nuclear power plant. In order to ensure that it has a sufficiently good sealing performance, the nuclear power plant must open the reactor pressure vessel for refueling and maintenance after a nuclear fuel cycle. There are usually some foreign matter (such as dust, rust), marks and scratches on the sealing surface of the pressure vessel, which will affect the sealing performance. Therefore, during each shutdown and refueling overhaul, the sealing surface of the pressure vessel needs to be polished. At the same time, the reactor pressure vessel is a device with high sealing requirements, and it also needs to be decontaminated and cleaned after polishing to ensure that the sealing surface has good sealing performance.

[0003] In related technologies, nuclear power plants mostly use manual cleaning to remove foreign matter remaining on the surface of the sealing surface. This method is inefficient and labor-intensive. More importantly, during the cleaning process, operators are exposed to radioactive dust environments, which poses a risk of contamination and more radiation exposure to personnel, posing certain safety risks.

[0004] To this end, we propose a pressure vessel sealing surface decontamination and cleaning device. Utility Model Content

[0005] The utility model aims to provide a pressure vessel sealing surface decontamination and cleaning device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pressure vessel sealing surface decontamination and cleaning device, comprising a fixed frame, a movable groove is opened in the middle of the fixed frame, a cleaning component is movably connected inside the movable groove, swing plates are rotatably connected at both ends of the fixed frame, clamping rollers are fixedly installed on the front and rear sides of the bottom of the swing plate, flat rollers located on both sides of the clamping rollers are rotatably connected to the bottom of the swing plate, a gear ring is fixedly installed at one end of the swing plate close to the cleaning component, racks located above the fixed frame are fixedly installed on both sides of the cleaning component, and the gear rings are meshed with the racks.

[0007] Optionally, the top of the fixed frame is fixedly installed with guide slide bars located on both sides of the movable groove, and the two sides of the cleaning component are fixedly installed with sliding blocks located above the rack. The guide slide bar is slidably connected with the middle part of the sliding block, and the guide slide bar sleeve is provided with a reset spring located on the front and rear sides of the sliding block.

[0008] Optionally, the clamping roller includes a connecting bracket fixedly mounted on the swing plate, a sliding groove is provided at the bottom of the connecting bracket, a sliding block is slidably connected inside the sliding groove, a rotating shaft is fixedly installed at the bottom of the sliding block, and the clamping roller is rotatably connected to the bottom of the rotating shaft.

[0009] Optionally, a clamping spring is fixedly installed on one side of the slider, and the other end of the clamping spring is fixedly installed inside the sliding groove. The two clamping rollers are symmetrically arranged at the bottom of the swing plate, and the bottom of the slider is flush with the bottom of the connecting bracket.

[0010] Optionally, the bottom of the fixed frame is rotatably connected to support rollers located on both sides of the movable groove, and the bottom of the support roller is arranged flush with the bottom of the plane roller.

[0011] Optionally, the bottom of the cleaning component housing is flush with the bottom of the fixing frame, and the width of the cleaning component is the same as the width of the movable groove.

[0012] Optionally, the midlines of the sliding block, the rack and the cleaning component are located in the same plane, the length of the sliding block is smaller than the length of the rack, and the length of the rack is smaller than the length of the side of the cleaning component.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The pressure vessel sealing surface decontamination and cleaning device is provided with a swing plate. When the fixed frame is placed on the sealing surface of the pressure vessel, the pressing rollers on both sides of the swing plate are in pressing and rolling contact with the inner and outer surfaces of the sealing surface respectively, so that the cleaning component is located above the sealing surface. At the same time, the swing plate rotating with the arc of the sealing surface drives the gear ring to rotate and drives the rack to move, so that the cleaning component moves inside the sliding groove along the guide rail, so that the cleaning component is always kept directly above the sealing surface, which is convenient for efficient cleaning of the sealing surface.

[0015] 2. The pressure vessel sealing surface decontamination and cleaning device, by arranging a clamping roller, makes the support roller and the plane roller roll in contact with the sealing surface, and arranges the fixed frame above the sealing surface. At the same time, the clamping wheel rolls in contact with the inner and outer surfaces of the sealing surface under the action of the clamping spring, so that the support frame is always kept above the sealing surface to prevent the fixed frame from deflecting. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a pressure vessel sealing surface decontamination and cleaning device according to the utility model;

[0017] Figure 2 This is a structural schematic diagram of a fixing frame of a pressure vessel sealing surface decontamination and cleaning device according to the utility model;

[0018] Figure 3 The utility model is a schematic structural diagram of a pressing roller of a pressure vessel sealing surface decontamination and cleaning device.

[0019] In the figure: 1, fixed frame; 2, movable groove; 3, cleaning component; 4, guide slide rod; 5, sliding block; 6, reset spring; 7, rack; 8, swing plate; 9, gear ring; 10, clamping roller; 101, connecting bracket; 102, sliding groove; 103, slider; 104, rotating shaft; 105, clamping wheel; 106, clamping spring; 11, supporting roller; 12, flat roller. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figures 1 to 3 The utility model provides a pressure vessel sealing surface decontamination and cleaning device, comprising a fixed frame 1, a movable groove 2 is opened in the middle of the fixed frame 1, a cleaning component 3 is movably connected inside the movable groove 2, swing plates 8 are rotatably connected at both ends of the fixed frame 1, abutting rollers 10 are fixedly installed at the front and rear sides of the bottom of the swing plate 8, flat rollers 12 located at both sides of the abutting rollers 10 are rotatably connected at the bottom of the swing plate 8, a gear ring 9 is fixedly installed at one end of the swing plate 8 close to the cleaning component 3, and racks 7 located above the fixed frame 1 are fixedly installed on both sides of the cleaning component 3 The gear ring 9 is meshed with the rack 7. By setting the swing plate 8, when the fixing frame 1 is placed on the sealing surface of the pressure vessel, the pressing rollers 10 on both sides of the swing plate 8 are in rolling contact with the inner and outer surfaces of the sealing surface respectively, so that the cleaning component 3 is located above the sealing surface. At the same time, the swing plate 8 rotates with the curvature of the sealing surface, driving the gear ring 9 to rotate, and driving the rack 7 to move, so that the cleaning component 3 moves along the guide rail inside the sliding groove 102, so that the cleaning component 3 is always kept directly above the sealing surface, which is convenient for efficient cleaning of the sealing surface.

[0022] The top of the fixed frame 1 is fixedly installed with guide slide bars 4 located on both sides of the movable groove 2, and the two sides of the cleaning component 3 are fixedly installed with sliding blocks 5 located above the rack 7. The guide slide bar 4 is slidably connected with the middle part of the sliding block 5, and the guide slide bar 4 is provided with a return spring 6 located on the front and rear sides of the sliding block 5.

[0023] The clamping roller 10 includes a connecting bracket 101 fixedly mounted on the swing plate 8, a sliding groove 102 is provided at the bottom of the connecting bracket 101, a slider 103 is slidably connected inside the sliding groove 102, a rotating shaft 104 is fixedly installed at the bottom of the slider 103, and a clamping wheel 105 is rotatably connected to the bottom of the rotating shaft 104.

[0024] A clamping spring 106 is fixedly installed on one side of the slider 103, and the other end of the clamping spring 106 is fixedly installed inside the sliding groove 102. Two clamping rollers 10 are symmetrically arranged at the bottom of the swing plate 8. The bottom of the slider 103 is arranged flush with the bottom of the connecting bracket 101. By arranging the clamping roller 10, the support roller 11 and the plane roller are in rolling contact with the sealing surface, and the fixed frame 1 is arranged above the sealing surface. At the same time, the clamping wheel 105 is in rolling contact with the inner and outer surfaces of the sealing surface under the action of the clamping spring 106, so that the support frame is always kept above the sealing surface to prevent the fixed frame 1 from deflecting.

[0025] The bottom of the fixed frame 1 is rotatably connected to support rollers 11 located on both sides of the movable groove 2 , and the bottom of the support roller 11 is arranged flush with the bottom of the plane roller 12 .

[0026] The bottom of the outer shell of the cleaning component 3 is flush with the bottom of the fixing frame 1 , and the width of the cleaning component 3 is the same as the width of the movable groove 2 .

[0027] The midlines of the sliding block 5 , the rack 7 and the cleaning component 3 are located in the same plane, the length of the sliding block 5 is smaller than the length of the rack 7 , and the length of the rack 7 is smaller than the length of the side surface of the cleaning component 3 .

[0028] Working principle: When the fixing frame 1 is placed on the sealing surface of the pressure vessel, the clamping rollers 10 on both sides of the swing plate 8 are respectively located on the inner and outer surfaces of the sealing surface, and the clamping wheels 105 are in rolling contact with the inner and outer surfaces of the sealing surface under the action of the clamping springs 106, so that the support frame is always kept above the sealing surface to prevent the fixing frame 1 from deflecting. At the same time, the swing plate 8 that rotates with the curvature of the sealing surface drives the gear ring 9 to rotate, and drives the rack 7 to move, so that the cleaning component 3 moves along the guide rail inside the sliding groove 102, so that the cleaning component 3 is always kept directly above the sealing surface, which is convenient for efficient cleaning of the sealing surface.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure vessel sealing surface decontamination and cleaning device, comprising a fixing frame (1), characterized in that: A movable groove (2) is provided in the middle of the fixed frame (1), and a cleaning component (3) is movably connected inside the movable groove (2). Swinging plates (8) are rotatably connected at both ends of the fixed frame (1). Clamping rollers (10) are fixedly installed at the front and rear sides of the bottom of the swinging plate (8). Flat rollers (12) located at both sides of the clamping rollers (10) are rotatably connected at the bottom of the swinging plate (8). A gear ring (9) is fixedly installed at one end of the swinging plate (8) close to the cleaning component (3). Racks (7) located above the fixed frame (1) are fixedly installed on both sides of the cleaning component (3), and the gear rings (9) are meshed with the racks (7).

2. A pressure vessel sealing surface decontamination and cleaning device according to claim 1, characterized in that: A guide slide bar (4) located on both sides of the movable groove (2) is fixedly installed on the top of the fixed frame (1), and a sliding block (5) located above the rack (7) is fixedly installed on both sides of the cleaning component (3). The guide slide bar (4) is slidably connected to the middle of the sliding block (5), and the guide slide bar (4) is sleeved with a return spring (6) located on the front and rear sides of the sliding block (5).

3. A pressure vessel sealing surface decontamination and cleaning device according to claim 1, characterized in that: The clamping roller (10) comprises a connecting bracket (101) fixedly mounted and rotatably connected to the swing plate (8); a sliding groove (102) is provided at the bottom of the connecting bracket (101); a sliding block (103) is slidably connected inside the sliding groove (102); a rotating shaft (104) is fixedly mounted at the bottom of the sliding block (103); and a clamping roller (105) is rotatably connected to the bottom of the rotating shaft (104).

4. A pressure vessel sealing surface decontamination and cleaning device according to claim 3, characterized in that: A clamping spring (106) is fixedly mounted on one side of the slider (103), and the other end of the clamping spring (106) is fixedly mounted inside the sliding groove (102). The two clamping rollers (10) are symmetrically arranged at the bottom of the swing plate (8), and the bottom of the slider (103) is flush with the bottom of the connecting bracket (101).

5. A pressure vessel sealing surface decontamination and cleaning device according to claim 1, characterized in that: The bottom of the fixed frame (1) is rotatably connected to support rollers (11) located on both sides of the movable groove (2), and the bottom of the support roller (11) is arranged flush with the bottom of the plane roller (12).

6. A pressure vessel sealing surface decontamination and cleaning device according to claim 1, characterized in that: The bottom of the outer shell of the cleaning component (3) is arranged flush with the bottom of the fixing frame (1), and the width of the cleaning component (3) is the same as the width of the movable groove (2).

7. A pressure vessel sealing surface decontamination and cleaning device according to claim 2, characterized in that: The midlines of the sliding block (5), the rack (7) and the cleaning component (3) are located in the same plane, the length of the sliding block (5) is smaller than the length of the rack (7), and the length of the rack (7) is smaller than the length of the side of the cleaning component (3).

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