Reactor heavy concrete member cutting technological process and system

Abstract

The invention discloses a reactor heavy concrete member cutting technological process and system, and the technological process comprises the following steps: starting a power supply and a control system of a secondary disintegration device, and then returning a diamond wire saw to a zero position; a roller shutter skylight of the air curtain is opened, and the heavy concrete member is hoisted to the bearing platform through a crane; the heavy concrete member is clamped through a flexible clamp on the bearing platform, the crane is driven away, and the roller shutter skylight is closed; and the diamond wire sawing machine is moved to the position above the heavy concrete member in the X direction. The cooling water circulator is started, water in the water storage tank is pumped out through the booster pump and used for cooling the diamond wire saw and spraying the water to the cutting position, and sewage generated by cutting flows into the water collection tank from the far end of the spiral conveyor. And the screw conveyor is started, concrete slag is discharged from the near-end outlet, and wastewater separation is achieved. The submersible pump is arranged in the water collecting tank, sewage is pressed into the filter and recycled into the water storage tank, and concrete residues can be collected at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of nuclear reactors, and specifically to a cutting process flow and system for reactor heavy concrete components. Background Art

[0002] A nuclear reactor, also known as an atomic energy reactor or a reactor, is a device that can maintain a controllable self-sustaining chain nuclear fission reaction to achieve the utilization of nuclear energy. By reasonably arranging nuclear fuel, a nuclear reactor can enable a self-sustaining chain nuclear fission process to occur therein without the need to replenish a neutron source. Strictly speaking, the term "reactor" should cover fission reactors, fusion reactors, and fission-fusion hybrid reactors, but generally only refers to fission reactors.

[0003] During the secondary disassembly process of reactor heavy concrete components, a secondary disassembly device is required to cut the reactor heavy concrete components. When the existing reactor heavy concrete components are cut, the cooling water cannot be separated from the concrete slag, resulting in the direct discharge of the cooling water after use, causing waste of water resources. Furthermore, the cooling water after use contains a large amount of radioactive dust, and these dusts are directly discharged into the external environment, easily causing large-area pollution. To solve the above technical problems, we have designed a cutting process flow and system for reactor heavy concrete components. Summary of the Invention

[0004] The purpose of the present invention is to provide a cutting process flow and system for reactor heavy concrete components, which have the advantages of separating cooling water from concrete slag and recovering radioactive dust in the cooling water, and solve the problems that when cutting reactor heavy concrete components, the cooling water cannot be separated from the concrete slag, resulting in the direct discharge of the cooling water after use, causing waste of water resources, and at the same time, the cooling water after use contains a large amount of radioactive dust, and these dusts are directly discharged into the external environment, easily causing large-area pollution.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A cutting process flow and system for reactor heavy concrete components, and its process flow includes the following steps:

[0006] Step 1: Start the power supply and control system of the secondary disassembly device, and then the diamond wire saw returns to the zero position;

[0007] Step 2: Open the rolling skylight of the air tent, and use the overhead crane to hoist the heavy concrete component onto the load-bearing platform;

[0008] Step 3: Clamp the heavy concrete component with the flexible fixture on the load-bearing platform, the overhead crane drives away, and the rolling skylight closes;

[0009] Step 4: Move the diamond wire saw in the X direction above the heavy concrete component, and move the diamond wire saw in the Y direction above the cutting surface to be cut;

[0010] Step Five: Adjust the relative distance of the downward movement drive frame according to the width of the cutting surface;

[0011] Step Six: First, start the cooling water circulator of the secondary disintegration device, then start the diamond wire saw machine and the downward movement drive frame for cutting, and monitor the cutting situation throughout the cutting process;

[0012] Step Seven: After the cutting is completed, the displacement of the downward movement drive frame returns to zero, and the diamond wire saw machine returns to zero in the X and Y directions;

[0013] Step Eight: The rolling skylight of the air tent is opened again, the overhead crane lifts the heavy concrete component that has completed cutting, and then continues with Step Two, using the overhead crane to hoist the heavy concrete component onto the load-bearing platform, and running repeatedly in this way.

[0014] Preferably, an air tent is arranged outside the frame, a rolling skylight is installed at the top of the air tent, an air purifier is installed at one end of the air tent, a cooling water circulator is installed at the top of the frame, X-direction drive beams are installed at both ends of the top of the frame, a load-bearing platform is installed in the middle of the top of the frame, a Y-direction drive frame is jointly installed on the tops of the two X-direction drive beams, a Y-direction moving frame is sleeved outside one end of the Y-direction drive frame, a diamond wire saw machine is installed at the top of the Y-direction moving frame, and downward movement drive frames are installed on both sides of the Y-direction moving frame.

[0015] Preferably, the load-bearing platform includes a platform body, the bottom of the platform body is connected to the center of the top of the frame, moving grooves are respectively formed through the centers of both ends and both sides of the top of the platform body, drive motors are respectively installed through the centers of both ends and both sides of the outside of the platform body, a coupling is connected to the output end of the drive motor, and a drive screw is connected to the side of the coupling away from the drive motor.

[0016] Preferably, support sleeves are respectively movably sleeved on the outside of the drive screw near the middle of the platform body and on the outside near the coupling through bearings, and the top of the support sleeve is connected to the bottom of the platform body.

[0017] Preferably, a moving plate is threadedly sleeved on the outside of the drive screw, the top of the moving plate penetrates through the moving groove and is connected to a support plate, both sides of the bottom of the support plate are connected with sliders, a slide rail is slidably penetrated through the inner wall of the slider, and the bottom of the slide rail is connected to the top of the platform body.

[0018] Preferably, support seats are connected to both ends of the slide rail, the bottom of the support seat is connected to the top of the platform body, and buffer blocks are connected to the opposite sides of the two support seats.

[0019] Preferably, a flexible fixture is connected to the top of the support plate, and a plurality of grooves are respectively formed through both sides of the top of the platform body.

[0020] Preferably, the cooling water circulator includes a water storage tank and a screw conveyor. The screw conveyor is used in cooperation with the outlet of the water collecting tank of the frame. One end of the screw conveyor is connected to a water collecting tank. The water inlet end of the water storage tank is connected to a filter. The water outlet end of the water storage tank is connected to a booster pump. The bottoms of the water storage tank, the booster pump and the filter are all connected to the top of the frame. The water inlet end of the filter extends into the interior of the water collecting tank and is connected to a submersible pump. The water outlet end of the booster pump is connected to the diamond wire saw through a flexible connecting pipe.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] Through the above process flow and the coordinated use of the frame, air tent, diamond wire saw, cooling water circulator, load-bearing platform, Y-direction driving frame, X-direction driving beam, rolling shutter skylight, downward moving driving frame and Y-direction moving frame, the present invention has the advantages of separating cooling water from concrete slag and recovering radioactive dust in the cooling water. During the cutting process, the cooperation of the air tent and the rolling shutter skylight provides a sealed environment for the cutting of the reactor heavy concrete components. When the cooling water circulator is turned on, the booster pump pumps out the water in the water storage tank for cooling the diamond wire saw and spraying at the cutting position. The sewage generated by cutting flows into the water collecting tank from the far end of the screw conveyor. When the screw conveyor starts, the concrete slag is discharged from the proximal outlet, realizing the separation of waste water. A submersible pump is arranged in the water collecting tank to press the sewage into the filter and recycle it into the water storage tank, and at the same time, the concrete slag can be collected; further, the radioactive dust in the sewage can be recovered so that it will not leak into the external environment; furthermore, the recycling of cooling water generally reduces the total amount of waste water containing radioactive dust, and the burden and cost of subsequent sewage treatment will also be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of the present invention;

[0024] Figure 2 is a top view of the structure of the present invention;

[0025] Figure 3 is a schematic structural diagram of the air tent of the present invention;

[0026] Figure 4 is a schematic structural diagram of the load-bearing platform of the present invention;

[0027] Figure 5 is of the present invention Figure 4 bottom view;

[0028] Figure 6 is a schematic partial structural diagram of the load-bearing platform of the present invention;

[0029] Figure 7 is of the present invention Figure 6 bottom view;

[0030] Figure 8 Schematic diagram of the structure of the air purifier of the present invention;

[0031] Figure 9 Flow chart of the present invention.

[0032] In the figure: 1, frame; 2, air tent; 3, diamond wire saw machine; 4, cooling water circulator; 41, booster pump; 42, water storage tank; 43, filter; 44, submersible pump; 45, collection tank; 46, screw conveyor; 5, load-bearing platform; 51, table body; 52, support seat; 53, buffer block; 54, flexible fixture; 55, coupling; 56, drive motor; 57, moving plate; 58, slider; 59, slide rail; 510, drive screw; 511, support sleeve; 512, groove; 513, support plate; 514, moving groove; 6, downward movement drive frame; 7, Y-direction drive frame; 8, air purifier; 9, X-direction drive beam; 10, rolling shutter skylight; 11, Y-direction moving frame. Specific embodiments

[0033] Please refer to Figures 1-9 , the cutting process flow and system of the reactor heavy concrete component, and its process flow includes the following steps:

[0034] Step 1: Start the power supply and control system of the secondary disassembly device, and then the diamond wire saw machine 3 returns to the zero position;

[0035] Step 2: Open the rolling shutter skylight 10 of the air tent 2, and use the overhead crane to hoist the heavy concrete component onto the load-bearing platform 5;

[0036] Step 3: Clamp the heavy concrete component with the flexible fixture 54 on the load-bearing platform 5, the overhead crane drives away, and the rolling shutter skylight 10 closes;

[0037] Step 4: Move the diamond wire saw machine 3 in the X direction to above the heavy concrete component, and move the diamond wire saw machine 3 in the Y direction to above the cutting surface;

[0038] Step 5: Adjust the relative distance of the downward movement drive frame 6 according to the width of the cutting surface;

[0039] Step 6: First, start the cooling water circulator 4 of the secondary disassembly device, then start the diamond wire saw machine 3 and the downward movement drive frame 6 for cutting, and monitor the cutting situation throughout the cutting process;

[0040] Step 7: After the cutting is completed, the displacement of the downward movement drive frame 6 returns to zero, and the diamond wire saw machine 3 returns to zero in the X and Y directions;

[0041] Step 8: Open the rolling shutter skylight 10 of the air tent 2 again, the overhead crane hoists the cut heavy concrete component away, and then continue with Step 2, use the overhead crane to hoist the heavy concrete component onto the load-bearing platform 5, and run repeatedly in this way.

[0042] An air tent 2 is provided outside the frame 1. A rolling skylight 10 is installed at the top of the air tent 2. An air purifier 8 is installed at one end of the air tent 2. A cooling water circulator 4 is installed at the top of the frame 1. X-direction driving beams 9 are installed at both ends of the top of the frame 1. A load-bearing platform 5 is installed in the middle of the top of the frame 1. A Y-direction driving frame 7 is jointly installed on the tops of the two X-direction driving beams 9. A Y-direction moving frame 11 is sleeved on the outer end of the Y-direction driving frame 7. A diamond wire saw machine 3 is installed at the top of the Y-direction moving frame 11. Lowering driving frames 6 are installed on both sides of the Y-direction moving frame 11. The frame 1 is welded by 100×200×t5 rectangular tubes, and its upper surface is assembled with a 20-mm-thick aluminum plate. A cooling water collection tank is assembled on the lower side, and it cooperates with the load-bearing platform 5 above. The size of the frame 1 is 4530×8590×845 mm, and the weight is about 1500 kg. The X-direction driving beam 9 is mainly composed of 100×200 aluminum profiles, and a 20-mm-thick aluminum plate is covered on it as the mounting plate for the guide rail. The weight of the X-direction driving beam 9 is about 180 kg, and the guide rail and sliding block on it are selected from the HIWIN EG20 model. Its function is mainly a load-bearing mechanism for the diamond wire saw machine 3 to move in the X direction. Therefore, a driving mechanism is provided on it. The diamond wire saw machine 3 can minimize the space occupied during cutting. It is mainly composed of a wheel set unit, a water pipe, a wire saw, a hydraulic device, a frame body, etc. The saw wire is driven by a hydraulic station and is used for cutting concrete. The main body size is about 8578×1600×2585 mm, and the weight is about 250 kg.

[0043] The load-bearing platform 5 includes a platform body 51. The bottom of the platform body 51 is connected to the center of the top of the frame 1. Moving grooves 514 are penetrated and opened at the centers of both ends and both sides of the top of the platform body 51. Driving motors 56 are penetrated and installed at the centers of both ends and both sides of the outside of the platform body 51. The output end of the driving motor 56 is connected with a coupling 55. The side of the coupling 55 away from the driving motor 56 is connected with a driving screw 510. The platform body 51 of the load-bearing platform 5 is mainly used for placing the components to be disassembled and can smoothly discharge the sewage generated during cutting. Therefore, the platform body 51 is in a hollow shape. To facilitate the wire saw of the diamond wire saw machine 3 to completely penetrate the heavy concrete component, the upper side of the platform body 51 is in a rectangular convex shape, forming a plurality of grooves 512 for the wire saw of the diamond wire saw machine 3 to pass through. The overall size is about 2600×2600×195 mm, and the weight is about 1800 kg.

[0044] Support sleeves 511 are movably sleeved on the outside of the driving screw 510 near the middle of the platform body 51 and on the outside near the coupling 55 through bearings. The top of the support sleeve 511 is connected to the bottom of the platform body 51; through the two support sleeves 511, the driving screw 510 can be supported to facilitate the rotation of the driving screw 510.

[0045] The outer thread of the driving screw 510 is sleeved with a moving plate 57. The top of the moving plate 57 penetrates through the moving groove 514 and is connected to a support plate 513. Both sides of the bottom of the support plate 513 are connected with sliders 58. The inner wall of the slider 58 is slidably penetrated with a slide rail 59. The bottom of the slide rail 59 is connected to the top of the table body 51. Through the moving groove 514, the movement of the moving plate 57 is facilitated.

[0046] Both ends of the slide rail 59 are connected with support seats 52. The bottom of the support seats 52 is connected to the top of the table body 51. Both opposite sides of the two support seats 52 are connected with buffer blocks 53. Through the buffer blocks 53, the support plate 513 can be buffered and protected; through the two support seats 52, the slide rail 59 can be supported and positioned, improving the stability of the slide rail 59.

[0047] The top of the support plate 513 is connected with a flexible fixture 54. A plurality of grooves 512 are respectively penetrated and opened on both sides of the top of the table body 51. Through the grooves 512, the passing of an external wire saw is facilitated; through the flexible fixture 54, workpieces of different shapes and sizes can be quickly adapted, and there is no need to frequently replace special fixtures.

[0048] The cooling water circulator 4 includes a water storage tank 42 and a spiral conveyor 46. The spiral conveyor 46 is used in cooperation with the water collection tank outlet of the frame 1. One end of the spiral conveyor 46 is connected with a water collection tank 45. The water inlet end of the water storage tank 42 is connected with a filter 43. The water outlet end of the water storage tank 42 is connected with a booster pump 41. The bottoms of the water storage tank 42, the booster pump 41 and the filter 43 are all connected to the top of the frame 1. The water inlet end of the filter 43 extends into the interior of the water collection tank 45 and is connected with a submersible pump 44. The water outlet end of the booster pump 41 is connected with the diamond wire saw machine 3 through a flexible connecting pipe; the mating surface of the spiral conveyor 46 and the water collection tank outlet of the frame 1 forms a certain angle, facilitating the sewage to flow into the water collection tank 45 from the far end of the spiral conveyor 46. After the spiral conveyor 46 is started, the concrete slag is discharged from the proximal outlet, realizing the separation of waste water. A submersible pump 44 is arranged in the water collection tank 45 to press the sewage into the filter 43 and recycle it into the water storage tank 42.

[0049] During use, the rolling skylight 10 of the air tent 2 is opened, and a heavy concrete component is hoisted by a gantry crane and placed on the load-bearing platform 5. Subsequently, the driving motor 56 operates to drive the flexible fixture 54 towards the heavy concrete component, and the flexible fixture 54 is used to lock the heavy concrete component. The gantry crane drives away and the rolling skylight 10 is closed. The X-direction driving beam 9 and the Y-direction driving frame 7 are started to adjust the position of the diamond wire saw 3. After reaching the predetermined position, the diamond wire saw 3 is started for cutting. At the same time, the cooling water circulator 4 is turned on, and the booster pump 41 pumps out the water in the water storage tank 42 for cooling the diamond wire saw 3 and spraying it at the cutting position. The sewage generated by cutting flows into the water collection tank 45 from the distal end of the screw conveyor 46. The screw conveyor 46 is started, and the concrete slag is discharged from the proximal outlet to achieve wastewater separation. A submersible pump 44 is arranged in the water collection tank 45 to press the sewage into the filter 43 and recycle it to the water storage tank 42, and at the same time, the concrete slag can be collected; further, the radioactive dust in the sewage can be recovered to prevent it from leaking into the external environment; furthermore, the recycling of cooling water generally reduces the total amount of wastewater containing radioactive dust, and the burden and cost of subsequent sewage treatment will also be reduced. After cutting is completed, the rolling skylight 10 of the air tent 2 is opened, and the component is hoisted out of the secondary disassembly device by a gantry crane. The above process is remotely monitored and controlled by the staff through the remote operation control unit.

[0050] In summary, for the cutting process flow and system of the reactor heavy concrete component, through the above process flow and the coordinated use of the frame 1, the air tent 2, the diamond wire saw 3, the cooling water circulator 4, the load-bearing platform 5, the Y-direction driving frame 7, the X-direction driving beam 9, the rolling skylight 10, the downward driving frame 6 and the Y-direction moving frame 11, it solves the problem that when the reactor heavy concrete component is cut, the cooling water cannot be separated from the concrete slag, resulting in the direct discharge of the used cooling water, causing waste of water resources. At the same time, the used cooling water contains a large amount of radioactive dust, and these dusts are directly discharged into the external environment, which is prone to large-area pollution.

Claims

1. The cutting process flow of reactor heavy concrete components is characterized in that, Its technological process includes the following steps: Step 1: Start the power supply and control system of the secondary disassembly device, and then the diamond wire saw machine (3) returns to the zero position; Step 2: Open the rolling skylight (10) of the air tent (2), and use the overhead crane to hoist the heavy concrete component onto the load-bearing platform (5); Step 3: Clamp the heavy concrete component with the flexible fixture (54) on the load-bearing platform (5), the overhead crane drives away, and the rolling skylight (10) closes; Step 4: Move the diamond wire saw machine (3) in the X direction above the heavy concrete component, and move the diamond wire saw machine (3) in the Y direction above the cutting surface; Step 5: Adjust the relative distance of the downward movement drive frame (6) according to the width of the cutting surface; Step 6: First, start the cooling water circulator (4) of the secondary disassembly device, then start the diamond wire saw machine (3) and the downward movement drive frame (6) for cutting, and monitor the cutting situation throughout the cutting process; Step 7: After the cutting is completed, the displacement of the downward movement drive frame (6) returns to zero, and the diamond wire saw machine (3) returns to zero in the X and Y directions; Step 8: Open the rolling skylight (10) of the air tent (2) again, the overhead crane hoists the cut heavy concrete component away, and then continue with Step 2, use the overhead crane to hoist the heavy concrete component onto the load-bearing platform (5), and run repeatedly in this way.

2. The system for the cutting process flow of the reactor heavy concrete component according to claim 1, wherein: An air tent (2) is arranged outside the frame (1), a rolling skylight (10) is installed at the top of the air tent (2), an air purifier (8) is installed at one end of the air tent (2), a cooling water circulator (4) is installed at the top of the frame (1), X-direction driving beams (9) are installed at both ends of the top of the frame (1), a load-bearing platform (5) is installed in the middle of the top of the frame (1), a Y-direction driving frame (7) is jointly installed on the tops of the two X-direction driving beams (9), a Y-direction moving frame (11) is sleeved outside one end of the Y-direction driving frame (7), a diamond wire saw machine (3) is installed on the top of the Y-direction moving frame (11), and downward movement drive frames (6) are installed on both sides of the Y-direction moving frame (11).

3. The system for the cutting process flow of the reactor heavy concrete component according to claim 2, wherein: The load-bearing platform (5) includes a platform body (51), the bottom of the platform body (51) is connected to the center of the top of the frame (1), moving grooves (514) are penetrated and opened at the centers of both ends and both sides of the top of the platform body (51), driving motors (56) are penetrated and installed at the centers of both ends and both sides of the outside of the platform body (51), the output end of the driving motor (56) is connected with a coupling (55), and one side of the coupling (55) far from the driving motor (56) is connected with a driving screw rod (510).

4. The system for the cutting process flow of the reactor heavy concrete component according to claim 3, characterized in that: Support sleeves (511) are movably sleeved on the outside of the driving screw rod (510) on one side close to the middle of the platform body (51) and on one side close to the coupling (55) through bearings, and the top of the support sleeve (511) is connected to the bottom of the platform body (51).

5. The system for the cutting process flow of the reactor heavy concrete component according to claim 3, wherein: An external thread of the driving screw rod (510) is sleeved with a moving plate (57). The top of the moving plate (57) penetrates through the moving groove (514) and is connected to a support plate (513). Both sides of the bottom of the support plate (513) are connected with sliders (58). The inner wall of the slider (58) is slidably penetrated with a slide rail (59). The bottom of the slide rail (59) is connected to the top of the table body (51).

6. The system of the cutting process flow of the reactor heavy concrete component according to claim 5, characterized in that: Both ends of the slide rail (59) are connected with support seats (52). The bottom of the support seat (52) is connected to the top of the table body (51). Buffer blocks (53) are connected to the opposite sides of the two support seats (52).

7. The system of the cutting process flow of the reactor heavy concrete component according to claim 5, characterized in that: The top of the support plate (513) is connected with a flexible fixture (54). A plurality of grooves (512) are respectively formed through the two sides of the top of the table body (51).

8. The system for the cutting process flow of the reactor metal component according to claim 2, characterized in that: The cooling water circulator (4) includes a water storage tank (42) and a screw conveyor (46). The screw conveyor (46) is used in cooperation with the water collecting tank outlet of the frame (1). One end of the screw conveyor (46) is connected with a water collecting tank (45). The water inlet end of the water storage tank (42) is connected with a filter (43). The water outlet end of the water storage tank (42) is connected with a booster pump (41). The bottoms of the water storage tank (42), the booster pump (41) and the filter (43) are all connected to the top of the frame (1). The water inlet end of the filter (43) extends into the interior of the water collecting tank (45) and is connected with a submersible pump (44). The water outlet end of the booster pump (41) is connected to the diamond wire saw machine (3) through a flexible connecting pipe.

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